阅读说明：本技术 一种pwm信号调节的切向调光模块及智能调光器 (Tangential dimming module adjusted by PWM (pulse-Width modulation) signal and intelligent dimmer ) 是由 徐晓清 俞贤晓 叶清峰 吴国明 于 2021-08-31 设计创作，主要内容包括：本发明公开了一种PWM信号调节的切向调光模块及智能调光器,切向调光模块通过设置正PWM端和负PWM端来接入外部PWM信号,该PWM信号用于控制切向调光模块的第一端和第二端之间开始导通时刻所处的市电交流电压的相位位置,由此接收智能通信模块发送的PWM信号进行调光,基于该切向调光模块构成的智能调光模块中设置智能通信模块接收外部无线控制信号,产生对应的PWM信号；优点是切向调光模块能够与智能通信模块配合,在智能通信模块输出的PWM信号控制下,调节导通角大小,从而能够通过远程控制来调节可调光LED灯的亮度,能够适应当前数字化和智能化的发展需求的PWM信号调节。(The invention discloses a tangential dimming module and an intelligent dimmer for PWM signal adjustment, wherein the tangential dimming module is connected with an external PWM signal by setting a positive PWM end and a negative PWM end, the PWM signal is used for controlling the phase position of mains supply alternating voltage at the moment of starting to be conducted between a first end and a second end of the tangential dimming module, so that the PWM signal sent by an intelligent communication module is received for dimming, and the intelligent dimming module formed based on the tangential dimming module is internally provided with an intelligent communication module for receiving an external wireless control signal and generating a corresponding PWM signal; the advantage is that the tangential module of adjusting luminance can cooperate with intelligent communication module, under the PWM signal control of intelligent communication module output, adjusts the angle of flow size to can adjust the luminance of LED lamp of can adjusting luminance through remote control, can adapt to the current digital and intelligent development demand's PWM signal regulation.)

1. A tangential dimming module adjusted by a PWM signal is provided with a first end and a second end, the tangential dimming module can change the voltage loaded between a live wire access end and a zero line access end of a dimmable LED lamp connected with the tangential dimming module by changing the voltage phase at the moment of starting conduction between the first end and the second end, namely adjusting the conduction angle, so as to adjust the brightness of the dimmable LED lamp, the tangential dimming module comprises a bidirectional thyristor, a bidirectional trigger tube, a capacitor and a charging control circuit, a first pole of the bidirectional thyristor is connected with one end of the charging control circuit, the connecting end of the bidirectional thyristor is the first end of the tangential dimming module, a gate pole of the bidirectional thyristor is connected with one end of the bidirectional trigger tube, and the other end of the bidirectional trigger tube, one end of the capacitor and the other end of the charging control circuit are connected, the other end of the capacitor is connected with the second pole of the bidirectional controllable silicon, the connecting end of the bidirectional controllable silicon is the second end of the tangential dimming module, the first pole and the second pole of the bidirectional controllable silicon are cut off at the moment that the instantaneous value of the mains supply alternating voltage is zero voltage, the capacitor is charged through the charging control circuit in the conversion process that the absolute value of the instantaneous value of the mains supply alternating voltage rises from zero voltage and then falls to zero voltage, when the voltage at the two ends of the capacitor reaches the conducting voltage of the bidirectional trigger tube, the bidirectional trigger tube is conducted, the capacitor discharges at the moment, then the first pole and the second pole of the bidirectional controllable silicon are conducted, the dimmable LED lamp connected with the tangential dimming module is connected with the mains supply alternating voltage, and the conducting state of the first pole and the second pole of the bidirectional controllable silicon is maintained until the current flowing between the first pole and the second pole of the bidirectional controllable silicon is smaller than the current flowing between the first pole and the second pole of the bidirectional controllable silicon Maintaining minimum current for conduction, or the moment when the voltage between the first pole and the second pole of the bidirectional triode thyristor is zero, when the first pole and the second pole of the bidirectional triode thyristor are cut off, the voltage between the live wire access end and the zero wire access end of the dimmable LED lamp connected with the tangential dimming module is zero, in the conversion process, changing the current of the charging control circuit, and being capable of changing the time when the voltage at two ends of the capacitor rises to the conduction voltage of the bidirectional trigger tube, namely adjusting the phase position of the commercial power alternating voltage when the first pole and the second pole of the bidirectional triode thyristor start to be conducted, if the conduction moment is advanced, the phase position of the conduction moment is reduced, the conduction angle is increased, otherwise, the conduction angle is reduced, and the tangential dimming module is characterized by further comprising a positive PWM end and a negative PWM end, the charging control circuit is provided with a positive signal end and a negative signal end, the positive signal end of the charging control circuit is the positive PWM end of the tangential dimming module, and the negative signal end of the charging control circuit is the negative PWM end of the tangential dimming module; the charging control circuit comprises a full-bridge rectifier bridge stack, a first resistor, a second resistor, a third resistor, a fourth resistor, a first diode, an MOS (metal oxide semiconductor) tube and an optical coupler, wherein the first resistor is an adjustable resistor, the first diode is a voltage stabilizing diode, an alternating current end of the full-bridge rectifier bridge stack is a first end of the charging control circuit, another alternating current end of the full-bridge rectifier bridge stack is a second end of the charging control circuit, a positive output end of the full-bridge rectifier bridge stack, one end of the first resistor and one end of the third resistor are connected, the other end of the first resistor and one end of the second resistor are connected, the other end of the second resistor and a drain electrode of the MOS tube are connected, the other end of the third resistor, a negative electrode of the first diode, a grid electrode of the MOS tube and a collector electrode of the optical coupler are connected, the source electrode of the MOS tube, the anode of the first diode, the emitter of the optical coupler and the negative output end of the full-bridge rectifier bridge stack are connected, the anode of the optical coupler and one end of the fourth resistor are connected, the other end of the fourth resistor is the positive signal end of the charging control circuit, the cathode of the optical coupler is the negative signal end of the charging control circuit, when the level between the positive signal end and the negative signal end of the charging control circuit is 1, the collector and the emitter of the optical coupler are connected, the source electrode and the drain electrode of the MOS tube are cut off, the current flowing between the two alternating current ends of the full-bridge rectifier bridge stack is zero, namely the current flowing through the charging control circuit is 0, when the positive signal end and the negative signal end of the charging control circuit are connected to 0 level, the collector and the emitter of the optical coupler are cut off, the source and the drain of the MOS tube are connected, the current flowing between the two alternating current ends of the full-bridge rectifier bridge stack is determined by the sum of the resistance values of the first resistor and the second resistor, namely the current flowing through the charging control circuit is not 0, when the resistance value of the first resistor is kept unchanged, the average current flowing through the charging control circuit corresponds to the time ratio occupied by the level 0 in the PWM signal accessed by the charging control circuit, when the voltages of the positive signal end and the negative signal end of the charging control circuit are suspended or accessed are 0, the collector and the emitter of the optical coupler are cut off, the source and the drain of the MOS tube are connected, and by adjusting the resistance value of the first resistor, the current flowing through the charging control circuit can be adjusted.

2. An intelligent light modulator is characterized by comprising a tangential light modulation module, a rectification circuit, an auxiliary power supply and an intelligent communication module, wherein the tangential light modulation module is used for modulating a PWM signal, the rectification circuit is provided with a first alternating current end, a second alternating current end, a positive output end and a negative output end, the rectification circuit is used for converting alternating current voltages connected with the first alternating current end and the second alternating current end into direct current voltages and outputting the direct current voltages between the positive output end and the negative output end, the auxiliary circuit is provided with an input end, an output end and a negative electrode, the intelligent communication module is provided with a positive electrode, a negative electrode and a PWM end, the tangential light modulation module is provided with a first end, a second end, a positive PWM end and a PWM end, the first end of the tangential light modulation module is connected with the first alternating current end of the rectification circuit, the connecting end of the tangential light modulation module is connected with a live wire connecting end of the intelligent light modulator, and the second alternating current end of the rectification circuit is a zero wire connecting end of the intelligent light modulator, the second end of the tangential dimming module is the output end of the intelligent dimmer, the positive output end of the rectifying circuit is connected with the input end of the auxiliary power supply, the output end of the auxiliary power supply is respectively connected with the positive PWM end of the tangential dimming module and the positive electrode of the intelligent communication module, the PWM end of the intelligent communication module is connected with the negative PWM end of the tangential dimming module, and the negative electrode of the intelligent communication module and the negative electrode of the auxiliary power supply are connected with the negative output end of the rectifying circuit;

the tangential dimming module can change the voltage loaded between a live wire access end and a zero wire access end of a dimmable LED lamp connected with the tangential dimming module by changing the voltage phase at the moment of starting to conduct between a first end and a second end of the tangential dimming module, namely adjusting the conduction angle, so as to adjust the brightness of the dimmable LED lamp, the tangential dimming module comprises a bidirectional thyristor, a bidirectional trigger tube, a capacitor and a charging control circuit, a first pole of the bidirectional thyristor is connected with one end of the charging control circuit, the connecting end of the bidirectional thyristor is the first end of the tangential dimming module, a gate pole of the bidirectional thyristor is connected with one end of the bidirectional trigger tube, the other end of the bidirectional trigger tube, one end of the capacitor are connected with the other end of the charging control circuit, the other end of the capacitor is connected with a second pole of the bidirectional thyristor, and the connecting end of the capacitor is the second end of the tangential dimming module, the bidirectional thyristor is characterized in that the first pole and the second pole of the bidirectional thyristor are cut off at the moment when the instantaneous value of the alternating-current voltage of the mains supply is zero voltage, the capacitor is charged through the charging control circuit in the conversion process that the absolute value of the instantaneous value of the alternating-current voltage of the mains supply rises from zero voltage and then falls to zero voltage, when the voltage at two ends of the capacitor reaches the conducting voltage of the bidirectional trigger tube, the bidirectional trigger tube is conducted, the capacitor discharges at the moment, then the first pole and the second pole of the bidirectional thyristor are conducted, the dimmable LED lamp connected with the tangential dimming module is connected with the alternating-current voltage of the mains supply, the conducting state of the first pole and the second pole of the bidirectional thyristor is maintained until the current flowing between the first pole and the second pole of the bidirectional thyristor is smaller than the minimum current for maintaining conduction, or the moment when the voltage between the first pole and the second pole of the bidirectional thyristor is zero, when the first pole and the second pole of the bidirectional controllable silicon are cut off, the voltage between the live wire access end and the zero line access end of the dimmable LED lamp connected with the tangential dimming module is zero, in the conversion process, the current of the charging control circuit is changed, the time that the voltage at two ends of the capacitor rises to the conducting voltage of the bidirectional trigger tube can be changed, namely the phase position of the mains supply alternating voltage when the first pole and the second pole of the bidirectional controllable silicon start to be conducted is adjusted, if the conducting time is advanced, the phase position of the conducting time is reduced, the conducting angle is increased, otherwise, the conducting angle is reduced, a PWM signal is used for being connected between the positive PWM end and the negative PWM end of the tangential dimming module, and the PWM signal is used for controlling the phase position of the mains supply alternating voltage at the moment when the first end and the second end of the tangential dimming module start to be conducted, the charging control circuit is also provided with a positive signal end and a negative signal end, the positive signal end of the charging control circuit is the positive PWM end of the tangential dimming module, and the negative signal end of the charging control circuit is the negative PWM end of the tangential dimming module; the charging control circuit comprises a full-bridge rectifier bridge stack, a first resistor, a second resistor, a third resistor, a fourth resistor, a first diode, an MOS (metal oxide semiconductor) tube and an optical coupler, wherein the first resistor is an adjustable resistor, the first diode is a voltage stabilizing diode, an alternating current end of the full-bridge rectifier bridge stack is a first end of the charging control circuit, another alternating current end of the full-bridge rectifier bridge stack is a second end of the charging control circuit, a positive output end of the full-bridge rectifier bridge stack, one end of the first resistor and one end of the third resistor are connected, the other end of the first resistor and one end of the second resistor are connected, the other end of the second resistor and a drain electrode of the MOS tube are connected, the other end of the third resistor, a negative electrode of the first diode, a grid electrode of the MOS tube and a collector electrode of the optical coupler are connected, the source electrode of the MOS tube, the anode of the first diode, the emitter of the optical coupler and the negative output end of the full-bridge rectifier bridge stack are connected, the anode of the optical coupler and one end of the fourth resistor are connected, the other end of the fourth resistor is the positive signal end of the charging control circuit, the cathode of the optical coupler is the negative signal end of the charging control circuit, when the level between the positive signal end and the negative signal end of the charging control circuit is 1, the collector and the emitter of the optical coupler are connected, the source electrode and the drain electrode of the MOS tube are cut off, the current flowing between the two alternating current ends of the full-bridge rectifier bridge stack is zero, namely the current flowing through the charging control circuit is 0, when the positive signal end and the negative signal end of the charging control circuit are connected to 0 level, the collector and the emitter of the optical coupler are cut off, the source and the drain of the MOS tube are connected, the current flowing between the two alternating current ends of the full-bridge rectifier bridge stack is determined by the sum of the resistance values of the first resistor and the second resistor, namely the current flowing through the charging control circuit is not 0, when the resistance value of the first resistor is kept unchanged, the average current flowing through the charging control circuit corresponds to the time ratio occupied by the level 0 in the PWM signal accessed by the charging control circuit, when the voltages of the positive signal end and the negative signal end of the charging control circuit are suspended or accessed are 0, the collector and the emitter of the optical coupler are cut off, the source and the drain of the MOS tube are connected, and by adjusting the resistance value of the first resistor, the current flowing through the charging control circuit can be adjusted;

work as intelligent light modulator with can adjust luminance the LED lamp and be connected, when adjusting luminance the LED lamp, intelligent light modulator's live wire link connect the commercial power live wire, intelligent light modulator's zero line link connect the commercial power zero line, intelligent light modulator's output and the live wire link of the LED lamp of can adjusting luminance connect, the zero line link and the commercial power zero line of the LED lamp of can adjusting luminance are connected, work as intelligent light modulator receive the wireless control signal that outside wireless terminal sent, intelligent communication module convert received wireless control signal into corresponding PWM signal and export at its PWM end, this moment the inside two-way silicon controlled rectifier of control circuit that charges begin to switch on at the voltage phase place that corresponds to adjust the LED lamp of can adjusting luminance according to corresponding luminance luminous.

Technical Field

The present invention relates to a tangential dimming module, and more particularly, to a tangential dimming module and an intelligent dimmer circuit for PWM signal adjustment.

Background

In an application line for dimming a dimmable LED lamp using a conventional dimmer, there are usually a dimmable LED lamp and a tangential dimming module. The LED lamp of can adjusting luminance has live wire incoming end and zero line incoming end, and the tangential module of adjusting luminance has first end and second end at least, and the live wire of commercial power is connected to the first end of tangential module of adjusting luminance, and the live wire incoming end of the LED lamp of can adjusting luminance is connected to the second end of tangential module of adjusting luminance, and the zero line of commercial power is connected to the zero line of the LED lamp of can adjusting luminance. The tangential dimming module changes the voltage size loaded to the live wire access end and the zero line access end of the dimmable LED lamp by changing the voltage phase at which the conduction time is started between the first end and the second end of the tangential dimming module, namely, adjusting the conduction angle, so that the brightness of the dimmable LED lamp is adjusted.

As shown in fig. 1, the currently commonly used tangential dimming module generally includes a triac Q1, a triac DB, a capacitor C and a charging control circuit, wherein a first pole of the triac Q1 is connected to one end of the charging control circuit and a connection end thereof is a first end of the tangential dimming module, a gate of the triac Q1 is connected to one end of the triac DB, another end of the triac DB, one end of the capacitor C is connected to another end of the charging control circuit, another end of the capacitor C is connected to a second pole of the triac Q1 and a connection end thereof is a second end of the tangential dimming module. The first pole and the second pole of the bidirectional controllable silicon are cut off at the moment when the instantaneous value of the alternating current voltage of the commercial power is zero voltage, and the capacitor is charged through the charging control circuit in the conversion process that the absolute value of the instantaneous value of the alternating current voltage of the commercial power rises from zero voltage and then falls to zero voltage. When the voltage at the two ends of the capacitor reaches the conduction voltage of the bidirectional trigger tube, the bidirectional trigger tube is conducted, the capacitor discharges, and then the first pole and the second pole of the bidirectional controllable silicon are triggered to be conducted. The conduction state of the first and second poles of the triac is maintained until the current flowing between the first and second poles is less than the minimum current at which it remains on, or the voltage between the first and second poles of the triac is zero. In the conversion process, the current of the charging control circuit is adjusted, the time of the voltage at two ends of the capacitor rising to the conduction voltage of the bidirectional trigger tube can be changed, the phase position of the alternating-current voltage of the commercial power at the time of starting conduction between the first pole and the second pole of the bidirectional controllable silicon is adjusted, if the conduction time between the first pole and the second pole of the bidirectional controllable silicon is advanced, the phase at the conduction time is reduced, and the conduction angle is increased. When the bidirectional thyristor is cut off between the first pole and the second pole, the voltage between the live wire access end and the zero line access end of the dimmable LED lamp is zero, when the bidirectional thyristor is switched on between the first pole and the second pole, the dimmable LED lamp is connected with the mains supply alternating voltage, and the brightness of the dimmable LED lamp corresponds to the connected mains supply alternating voltage.

The conventional charging control circuit is usually an adjustable resistor, one end of the adjustable resistor is one end of the charging control circuit, the other end of the adjustable circuit is the other end of the charging control circuit, the current of the charging controller can be changed by changing the resistance value of the adjustable resistor, but a user can only adjust the conduction angle of the tangential dimming module by manually adjusting the resistance value of the adjustable resistor, so that the brightness of the dimmable LED lamp can be adjusted, the dimmable LED lamp cannot be matched with the intelligent communication module, the brightness of the dimmable LED lamp can be adjusted through remote control, and the current digital and intelligent development requirements cannot be met.

Disclosure of Invention

One of the technical problems to be solved by the invention is to provide a tangential dimming module for PWM signal adjustment, which can be matched with an intelligent communication module and adjust the conduction angle under the control of a PWM signal output by the intelligent communication module, so that the brightness of a dimmable LED lamp can be adjusted through remote control, and the tangential dimming module can meet the current digital and intelligent development requirements.

The technical scheme adopted by the invention for solving one of the technical problems is as follows: a tangential dimming module adjusted by a PWM signal is provided with a first end and a second end, the tangential dimming module can change the voltage loaded between a live wire access end and a zero line access end of a dimmable LED lamp connected with the tangential dimming module by changing the voltage phase at the moment of starting conduction between the first end and the second end, namely adjusting the conduction angle, so as to adjust the brightness of the dimmable LED lamp, the tangential dimming module comprises a bidirectional thyristor, a bidirectional trigger tube, a capacitor and a charging control circuit, a first pole of the bidirectional thyristor is connected with one end of the charging control circuit, the connecting end of the bidirectional thyristor is the first end of the tangential dimming module, a gate pole of the bidirectional thyristor is connected with one end of the bidirectional trigger tube, and the other end of the bidirectional trigger tube, one end of the capacitor and the other end of the charging control circuit are connected, the other end of the capacitor is connected with the second pole of the bidirectional controllable silicon, the connecting end of the bidirectional controllable silicon is the second end of the tangential dimming module, the first pole and the second pole of the bidirectional controllable silicon are cut off at the moment that the instantaneous value of the mains supply alternating voltage is zero voltage, the capacitor is charged through the charging control circuit in the conversion process that the absolute value of the instantaneous value of the mains supply alternating voltage rises from zero voltage and then falls to zero voltage, when the voltage at the two ends of the capacitor reaches the conducting voltage of the bidirectional trigger tube, the bidirectional trigger tube is conducted, the capacitor discharges at the moment, then the first pole and the second pole of the bidirectional controllable silicon are conducted, the dimmable LED lamp connected with the tangential dimming module is connected with the mains supply alternating voltage, and the conducting state of the first pole and the second pole of the bidirectional controllable silicon is maintained until the current flowing between the first pole and the second pole of the bidirectional controllable silicon is smaller than the current flowing between the first pole and the second pole of the bidirectional controllable silicon Maintaining minimum current for conduction, or the moment when the voltage between the first pole and the second pole of the bidirectional triode thyristor is zero, when the first pole and the second pole of the bidirectional triode thyristor are cut off, the voltage between the live wire access end and the zero wire access end of the dimmable LED lamp connected with the tangential dimming module is zero, in the conversion process, changing the current of the charging control circuit, and being capable of changing the time when the voltage at two ends of the capacitor rises to the conduction voltage of the bidirectional trigger tube, namely adjusting the phase position of the mains supply alternating voltage when the first pole and the second pole of the bidirectional triode thyristor start to be conducted, if the conduction moment is advanced, the phase at the conduction moment is reduced, the conduction angle is increased, otherwise, the tangential dimming module is also provided with a positive PWM end and a negative PWM end, and the positive PWM end and the negative PWM end of the tangential dimming module are used for accessing PWM signals, the charging control circuit is used for controlling the phase position of the commercial power alternating-current voltage at the moment when the first end and the second end of the tangential dimming module start to be conducted, and is also provided with a positive signal end and a negative signal end, wherein the positive signal end of the charging control circuit is the positive PWM end of the tangential dimming module, and the negative signal end of the charging control circuit is the negative PWM end of the tangential dimming module; the charging control circuit comprises a full-bridge rectifier bridge stack, a first resistor, a second resistor, a third resistor, a fourth resistor, a first diode, an MOS (metal oxide semiconductor) tube and an optical coupler, wherein the first resistor is an adjustable resistor, the first diode is a voltage stabilizing diode, an alternating current end of the full-bridge rectifier bridge stack is a first end of the charging control circuit, another alternating current end of the full-bridge rectifier bridge stack is a second end of the charging control circuit, a positive output end of the full-bridge rectifier bridge stack, one end of the first resistor and one end of the third resistor are connected, the other end of the first resistor and one end of the second resistor are connected, the other end of the second resistor and a drain electrode of the MOS tube are connected, the other end of the third resistor, a negative electrode of the first diode, a grid electrode of the MOS tube and a collector electrode of the optical coupler are connected, the source electrode of the MOS tube, the anode of the first diode, the emitter of the optical coupler and the negative output end of the full-bridge rectifier bridge stack are connected, the anode of the optical coupler and one end of the fourth resistor are connected, the other end of the fourth resistor is the positive signal end of the charging control circuit, the cathode of the optical coupler is the negative signal end of the charging control circuit, when the level between the positive signal end and the negative signal end of the charging control circuit is 1, the collector and the emitter of the optical coupler are connected, the source electrode and the drain electrode of the MOS tube are cut off, the current flowing between the two alternating current ends of the full-bridge rectifier bridge stack is zero, namely the current flowing through the charging control circuit is 0, when the positive signal end and the negative signal end of the charging control circuit are connected to 0 level, the collector and the emitter of the optical coupler are cut off, the source and the drain of the MOS tube are connected, the current flowing between the two alternating current ends of the full-bridge rectifier bridge stack is determined by the sum of the resistance values of the first resistor and the second resistor, namely the current flowing through the charging control circuit is not 0, when the resistance value of the first resistor is kept unchanged, the average current flowing through the charging control circuit corresponds to the time ratio occupied by the level 0 in the PWM signal accessed by the charging control circuit, when the voltages of the positive signal end and the negative signal end of the charging control circuit are suspended or accessed are 0, the collector and the emitter of the optical coupler are cut off, the source and the drain of the MOS tube are connected, and by adjusting the resistance value of the first resistor, the current flowing through the charging control circuit can be adjusted.

Compared with the prior art, the tangential dimming module has the advantages that the positive PWM end and the negative PWM end are arranged in the tangential dimming module, the PWM signal is used for being connected between the positive PWM end and the negative PWM end of the tangential dimming module and used for controlling the phase position of the alternating-current voltage of the mains supply at the moment when the first end and the second end of the tangential dimming module start to be conducted, the charging control circuit further comprises a positive signal end and a negative signal end, the positive signal end of the charging control circuit is the positive PWM end of the tangential dimming module, and the negative signal end of the charging control circuit is the negative PWM end of the tangential dimming module; the charging control circuit comprises a full-bridge rectifier bridge stack, a first resistor, a second resistor, a third resistor, a fourth resistor, a first diode, an MOS (metal oxide semiconductor) tube and an optical coupler, wherein the first resistor is an adjustable resistor, the first diode is a voltage stabilizing diode, one alternating current end of the full-bridge rectifier bridge stack is the first end of the charging control circuit, the other alternating current end of the full-bridge rectifier bridge stack is the second end of the charging control circuit, the positive output end of the full-bridge rectifier bridge stack, one end of the first resistor and one end of the third resistor are connected, the other end of the first resistor and one end of the second resistor are connected, the other end of the second resistor is connected with the drain electrode of the MOS tube, the other end of the third resistor, the negative electrode of the first diode, the grid electrode of the MOS tube and the collector electrode of the optical coupler are connected, the source electrode of the MOS tube, the positive electrode of the first diode, the emitter electrode of the optical coupler and the negative output end of the full-bridge rectifier bridge stack are connected, the anode of the optical coupler is connected with one end of a fourth resistor, the other end of the fourth resistor is a positive signal end of a charging control circuit, the cathode of the optical coupler is a negative signal end of the charging control circuit, when the level between the positive signal end and the negative signal end of the charging control circuit is 1, the collector and the emitter of the optical coupler are connected, the source and the drain of the MOS tube are cut off, the current flowing between the two alternating current ends of the full-bridge rectifier bridge stack is zero, namely the current flowing through the charging control circuit is 0, when the level between the positive signal end and the negative signal end of the charging control circuit is 0, the collector and the emitter of the optical coupler are cut off, the source and the drain of the MOS tube are connected, the current flowing between the two alternating current ends of the full-bridge rectifier bridge stack is determined by the sum of the resistance values of the first resistor and the second resistor, namely the current flowing through the charging control circuit is not 0, when the resistance value of the first resistor is kept unchanged, the average current flowing through the charging control circuit corresponds to the time ratio of 0 level in a PWM signal accessed by the charging control circuit, when the voltage of a positive signal end and a negative signal end of the charging control circuit which are suspended or accessed is 0, the collector electrode and the emitter electrode of the optical coupler are cut off, the source electrode and the drain electrode of the MOS tube are conducted, and the current flowing through the charging control circuit can be adjusted by adjusting the resistance value of the first resistor, the tangential dimming module of the invention adjusts the light of a dimmable LED lamp connected with the tangential dimming module through the PWM signal, the PWM signal is accessed between the positive PWM end and the negative PWM end, the larger the proportion of 0 level of the PWM signal is, the larger the conduction angle of a bidirectional thyristor in the charging control circuit is, the maximum conduction angle of the tangential dimming module is limited by the resistance value of the first resistor, and therefore the tangential dimming module can be matched with an intelligent communication module, the tangential dimming module can be matched with the existing intelligent communication module on the basis of having the existing function of manually adjusting the brightness of the dimmable LED lamp, and the conduction angle is adjusted under the control of the PWM signal output by the intelligent communication module, so that the brightness of the dimmable LED lamp can be adjusted through remote control, and the current digital and intelligent development requirements can be met.

The second technical problem to be solved by the present invention is to provide an intelligent dimmer circuit for PWM signal adjustment, which can adjust the brightness of a dimmable LED lamp through remote control and can meet the current development requirements of digitization and intelligence.

The second technical solution adopted by the present invention to solve the above technical problems is: an intelligent light modulator comprises a tangential light modulation module regulated by a PWM signal, a rectifying circuit, an auxiliary power supply and an intelligent communication module, wherein the rectifying circuit is provided with a first alternating current end, a second alternating current end, a positive output end and a negative output end, the rectifying circuit is used for converting alternating current voltage connected with the first alternating current end and the second alternating current end into direct current voltage to be output between the positive output end and the negative output end of the rectifying circuit, the auxiliary circuit is provided with an input end, an output end and a negative electrode, the intelligent communication module is provided with a positive electrode, a negative electrode and a PWM end, the tangential light modulation module is provided with a first end, a second end, a positive PWM end and a PWM end, the first end of the tangential light modulation module is connected with the first alternating current end of the rectifying circuit, the connecting end of the tangential light modulation module is connected with a live wire connecting end of the intelligent light modulator, and the second alternating current end of the rectifying circuit is a zero wire connecting end of the intelligent light modulator, the second end of the tangential dimming module is the output end of the intelligent dimmer, the positive output end of the rectifying circuit is connected with the input end of the auxiliary power supply, the output end of the auxiliary power supply is respectively connected with the positive PWM end of the tangential dimming module and the positive electrode of the intelligent communication module, the PWM end of the intelligent communication module is connected with the negative PWM end of the tangential dimming module, and the negative electrode of the intelligent communication module and the negative electrode of the auxiliary power supply are connected with the negative output end of the rectifying circuit; the tangential dimming module can change the voltage loaded between a live wire access end and a zero wire access end of a dimmable LED lamp connected with the tangential dimming module by changing the voltage phase at the moment of starting to conduct between a first end and a second end of the tangential dimming module, namely adjusting the conduction angle, so as to adjust the brightness of the dimmable LED lamp, the tangential dimming module comprises a bidirectional thyristor, a bidirectional trigger tube, a capacitor and a charging control circuit, a first pole of the bidirectional thyristor is connected with one end of the charging control circuit, the connecting end of the bidirectional thyristor is the first end of the tangential dimming module, a gate pole of the bidirectional thyristor is connected with one end of the bidirectional trigger tube, the other end of the bidirectional trigger tube, one end of the capacitor are connected with the other end of the charging control circuit, the other end of the capacitor is connected with a second pole of the bidirectional thyristor, and the connecting end of the capacitor is the second end of the tangential dimming module, the bidirectional thyristor is characterized in that the first pole and the second pole of the bidirectional thyristor are cut off at the moment when the instantaneous value of the alternating-current voltage of the mains supply is zero voltage, the capacitor is charged through the charging control circuit in the conversion process that the absolute value of the instantaneous value of the alternating-current voltage of the mains supply rises from zero voltage and then falls to zero voltage, when the voltage at two ends of the capacitor reaches the conducting voltage of the bidirectional trigger tube, the bidirectional trigger tube is conducted, the capacitor discharges at the moment, then the first pole and the second pole of the bidirectional thyristor are conducted, the dimmable LED lamp connected with the tangential dimming module is connected with the alternating-current voltage of the mains supply, the conducting state of the first pole and the second pole of the bidirectional thyristor is maintained until the current flowing between the first pole and the second pole of the bidirectional thyristor is smaller than the minimum current for maintaining conduction, or the moment when the voltage between the first pole and the second pole of the bidirectional thyristor is zero, when the first pole and the second pole of the bidirectional controllable silicon are cut off, the voltage between the live wire access end and the zero line access end of the dimmable LED lamp connected with the tangential dimming module is zero, in the conversion process, the current of the charging control circuit is changed, the time that the voltage at two ends of the capacitor rises to the conducting voltage of the bidirectional trigger tube can be changed, namely the phase position of the mains supply alternating voltage when the first pole and the second pole of the bidirectional controllable silicon start to be conducted is adjusted, if the conducting time is advanced, the phase position of the conducting time is reduced, the conducting angle is increased, otherwise, the conducting angle is reduced, a PWM signal is used for being connected between the positive PWM end and the negative PWM end of the tangential dimming module, and the PWM signal is used for controlling the phase position of the mains supply alternating voltage at the moment when the first end and the second end of the tangential dimming module start to be conducted, the charging control circuit is also provided with a positive signal end and a negative signal end, the positive signal end of the charging control circuit is the positive PWM end of the tangential dimming module, and the negative signal end of the charging control circuit is the negative PWM end of the tangential dimming module; the charging control circuit comprises a full-bridge rectifier bridge stack, a first resistor, a second resistor, a third resistor, a fourth resistor, a first diode, an MOS (metal oxide semiconductor) tube and an optical coupler, wherein the first resistor is an adjustable resistor, the first diode is a voltage stabilizing diode, an alternating current end of the full-bridge rectifier bridge stack is a first end of the charging control circuit, another alternating current end of the full-bridge rectifier bridge stack is a second end of the charging control circuit, a positive output end of the full-bridge rectifier bridge stack, one end of the first resistor and one end of the third resistor are connected, the other end of the first resistor and one end of the second resistor are connected, the other end of the second resistor and a drain electrode of the MOS tube are connected, the other end of the third resistor, a negative electrode of the first diode, a grid electrode of the MOS tube and a collector electrode of the optical coupler are connected, the source electrode of the MOS tube, the anode of the first diode, the emitter of the optical coupler and the negative output end of the full-bridge rectifier bridge stack are connected, the anode of the optical coupler and one end of the fourth resistor are connected, the other end of the fourth resistor is the positive signal end of the charging control circuit, the cathode of the optical coupler is the negative signal end of the charging control circuit, when the level between the positive signal end and the negative signal end of the charging control circuit is 1, the collector and the emitter of the optical coupler are connected, the source electrode and the drain electrode of the MOS tube are cut off, the current flowing between the two alternating current ends of the full-bridge rectifier bridge stack is zero, namely the current flowing through the charging control circuit is 0, when the positive signal end and the negative signal end of the charging control circuit are connected to 0 level, the collector and the emitter of the optical coupler are cut off, the source and the drain of the MOS tube are connected, the current flowing between the two alternating current ends of the full-bridge rectifier bridge stack is determined by the sum of the resistance values of the first resistor and the second resistor, namely the current flowing through the charging control circuit is not 0, when the resistance value of the first resistor is kept unchanged, the average current flowing through the charging control circuit corresponds to the time ratio occupied by the level 0 in the PWM signal accessed by the charging control circuit, when the voltages of the positive signal end and the negative signal end of the charging control circuit are suspended or accessed are 0, the collector and the emitter of the optical coupler are cut off, the source and the drain of the MOS tube are connected, and by adjusting the resistance value of the first resistor, the current flowing through the charging control circuit can be adjusted; work as intelligent light modulator with can adjust luminance the LED lamp and be connected, when adjusting luminance the LED lamp, intelligent light modulator's live wire link connect the commercial power live wire, intelligent light modulator's zero line link connect the commercial power zero line, intelligent light modulator's output and the live wire link of the LED lamp of can adjusting luminance connect, the zero line link and the commercial power zero line of the LED lamp of can adjusting luminance are connected, work as intelligent light modulator receive the wireless control signal that outside wireless terminal sent, intelligent communication module convert received wireless control signal into corresponding PWM signal and export at its PWM end, this moment the inside two-way silicon controlled rectifier of control circuit that charges begin to switch on at the voltage phase place that corresponds to adjust the LED lamp of can adjusting luminance according to corresponding luminance luminous.

Compared with the prior art, the intelligent dimmer circuit has the advantages that the intelligent dimmer is formed by the tangential dimming module regulated by the PWM signal, the rectifying circuit, the auxiliary power supply and the intelligent communication module, the tangential dimming module is internally provided with the positive PWM end and the negative PWM end, the PWM signal is connected between the positive PWM end and the negative PWM end of the tangential dimming module and used for controlling the phase position of the alternating-current voltage of the mains supply at the moment of starting to be conducted between the first end and the second end of the tangential dimming module, the charging control circuit is also provided with the positive signal end and the negative signal end, the positive signal end of the charging control circuit is the positive PWM end of the tangential dimming module, and the negative signal end of the charging control circuit is the negative PWM end of the tangential dimming module; the charging control circuit comprises a full-bridge rectifier bridge stack, a first resistor, a second resistor, a third resistor, a fourth resistor, a first diode, an MOS (metal oxide semiconductor) tube and an optical coupler, wherein the first resistor is an adjustable resistor, the first diode is a voltage stabilizing diode, one alternating current end of the full-bridge rectifier bridge stack is the first end of the charging control circuit, the other alternating current end of the full-bridge rectifier bridge stack is the second end of the charging control circuit, the positive output end of the full-bridge rectifier bridge stack, one end of the first resistor and one end of the third resistor are connected, the other end of the first resistor and one end of the second resistor are connected, the other end of the second resistor is connected with the drain electrode of the MOS tube, the other end of the third resistor, the negative electrode of the first diode, the grid electrode of the MOS tube and the collector electrode of the optical coupler are connected, the source electrode of the MOS tube, the positive electrode of the first diode, the emitter electrode of the optical coupler and the negative output end of the full-bridge rectifier bridge stack are connected, the anode of the optical coupler is connected with one end of a fourth resistor, the other end of the fourth resistor is a positive signal end of a charging control circuit, the cathode of the optical coupler is a negative signal end of the charging control circuit, when the level between the positive signal end and the negative signal end of the charging control circuit is 1, the collector and the emitter of the optical coupler are connected, the source and the drain of the MOS tube are cut off, the current flowing between the two alternating current ends of the full-bridge rectifier bridge stack is zero, namely the current flowing through the charging control circuit is 0, when the level between the positive signal end and the negative signal end of the charging control circuit is 0, the collector and the emitter of the optical coupler are cut off, the source and the drain of the MOS tube are connected, the current flowing between the two alternating current ends of the full-bridge rectifier bridge stack is determined by the sum of the resistance values of the first resistor and the second resistor, namely the current flowing through the charging control circuit is not 0, when the resistance value of the first resistor is kept unchanged, the average current flowing through the charging control circuit corresponds to the time ratio of 0 level in a PWM signal accessed by the charging control circuit, when the positive signal end and the negative signal end of the charging control circuit are suspended or the accessed voltage is 0, the collector electrode and the emitter electrode of the optical coupler are cut off, the source electrode and the drain electrode of the MOS tube are conducted, and the current flowing through the charging control circuit can be adjusted by adjusting the resistance value of the first resistor, the tangential dimming module of the invention adjusts the light of a dimmable LED lamp connected with the tangential dimming module through the PWM signal, the PWM signal is accessed between the positive PWM end and the negative PWM end, the larger the ratio of 0 level of the PWM signal is, the larger the conduction angle of a bidirectional thyristor in the charging control circuit is, the maximum conduction angle is limited by the resistance value of the first resistor, and when the intelligent dimmer is connected with the dimmable LED lamp, when the dimmable LED lamp is dimmed, the live wire connecting end of the intelligent dimmer is connected with the commercial power live wire, the zero line connecting end of the intelligent dimmer is connected with the commercial power zero line, the output end of the intelligent dimmer is connected with the live wire connecting end of the dimmable LED lamp, the zero line connecting end of the light-adjustable LED lamp is connected with the zero line of the commercial power, when the intelligent light modulator receives a wireless control signal sent by an external wireless terminal, the intelligent communication module converts the received wireless control signal into a corresponding PWM signal and outputs the PWM signal at a PWM end, at the moment, the bidirectional controllable silicon in the charging control circuit starts to be conducted at a corresponding voltage phase, therefore, the dimmable LED lamp can be adjusted to emit light according to corresponding brightness, the brightness of the dimmable LED lamp can be adjusted through remote control through the cooperation of the intelligent communication module and the tangential dimming module, and the current digital and intelligent development requirements can be met.

Drawings

Fig. 1 is a circuit diagram of a conventional tangential dimming module;

FIG. 2 is a circuit diagram of the tangential dimming module for PWM signal conditioning according to the present invention;

FIG. 3 is a circuit diagram of a PWM signal conditioned tangential dimming module of the present invention;

fig. 4 is a block diagram of the smart dimmer of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

The invention discloses a tangential dimming module for PWM signal adjustment, which is described in further detail below with reference to the embodiment of the attached drawings.

Example (b): as shown in fig. 2 and 3, a tangential dimming module adjusted by a PWM signal has a first end T1 and a second end T2, and the tangential dimming module can change the voltage applied between the live wire connection terminal and the neutral wire connection terminal of a dimmable LED lamp connected thereto by changing the voltage phase at the time of starting conduction between the first end T1 and the second end T2, i.e. adjusting the conduction angle, so as to adjust the brightness of the dimmable LED lamp, and the tangential dimming module includes a triac Q1, a triac DB, a capacitor C and a charging control circuit, a first pole of the triac Q1 is connected to one end of the charging control circuit and a connection end thereof is the first end T1 of the tangential dimming module, a gate of the triac Q1 is connected to one end of the triac DB, and another end of the triac C is connected to the other end of the charging control circuit, the other end of the capacitor C is connected with the second pole of the bidirectional controllable silicon Q1, the connection end of the capacitor C is the second end T2 of the tangential dimming module, the first pole and the second pole of the bidirectional controllable silicon Q1 are cut off when the instantaneous value of the commercial power alternating voltage is zero voltage, the capacitor C is charged through the charging control circuit in the conversion process that the absolute value of the instantaneous value of the commercial power alternating voltage rises from zero voltage and then falls to zero voltage, when the voltage at the two ends of the capacitor C reaches the conduction voltage of the bidirectional trigger tube DB, the bidirectional trigger tube DB is conducted, the capacitor C discharges at the moment, then the conduction between the first pole and the second pole of the bidirectional controllable silicon Q1 is triggered, the dimmable LED lamp connected with the tangential dimming module is connected with the commercial power alternating voltage, the conduction state of the first pole and the second pole of the bidirectional controllable silicon Q1 is maintained until the current flowing between the first pole and the second pole is smaller than the minimum current for maintaining conduction, or the time when the voltage between the first pole and the second pole of the bidirectional triode thyristor Q1 is zero, when the first pole and the second pole of the bidirectional triode thyristor Q1 are cut off, the voltage between the live wire access end and the zero line access end of the dimmable LED lamp connected with the tangential dimming module is zero, during the conversion process, the current of the charging control circuit is changed, the time when the voltage between the two ends of the capacitor C rises to the conducting voltage of the bidirectional trigger tube DB can be changed, that is, the phase position of the mains supply alternating voltage when the first pole and the second pole of the bidirectional triode thyristor Q1 start conducting is adjusted, if the conducting time is advanced, the phase of the conducting time is reduced, the conducting angle is increased, otherwise, the conducting angle is reduced, the tangential dimming module further has a positive PWM end and a negative PWM end, a PWM signal is connected between the positive PWM end and the negative PWM end of the tangential dimming module, and the PWM signal is used for controlling the mains supply alternating voltage when the first end T1 and the second end T2 of the tangential dimming module start conducting time The charging control circuit is also provided with a positive signal end and a negative signal end, the positive signal end of the charging control circuit is a positive PWM end of the tangential dimming module, and the negative signal end of the charging control circuit is a negative PWM end of the tangential dimming module; the charging control circuit comprises a full-bridge rectifier bridge stack Db, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first diode D1, a MOS tube M1 and an optical coupler U1, the first resistor R1 is an adjustable resistor, the first diode D1 is a voltage stabilizing diode, one alternating current end of the full-bridge rectifier bridge stack Db is a first end T1 of the charging control circuit, the other alternating current end of the full-bridge rectifier bridge stack Db is a second end T2 of the charging control circuit, a positive output end of the full-bridge rectifier bridge stack Db, one end of the first resistor R1 and one end of the third resistor R3 are connected, the other end of the first resistor R1 and one end of the second resistor R2 are connected, the other end of the second resistor R2 is connected with a drain of the MOS tube M1, the other end of the third resistor R3, a negative electrode of the first diode D1, a gate of the MOS tube M1 and a source of the optical coupler U1 are connected with a source of the MOS tube M1, a positive collector of the MOS tube M599 and a collector of the MOS tube M599, An emitter of the optical coupler U1 is connected with a negative output end of the full-bridge rectifier bridge stack Db, an anode of the optical coupler U1 is connected with one end of a fourth resistor R4, the other end of the fourth resistor R4 is a positive signal end of a charging control circuit, a cathode of the optical coupler U1 is a negative signal end of the charging control circuit, when the positive signal end and the negative signal end of the charging control circuit are at 1 level, a collector and an emitter of the optical coupler U1 are connected, a source and a drain of the MOS transistor M1 are cut off, then the magnitude of current flowing between two alternating current ends of the full-bridge rectifier bridge stack Db is zero, namely the current flowing through the charging control circuit is 0, when the positive signal end and the negative signal end of the charging control circuit are connected to 0 level, the collector and the emitter of the optical coupler U1 are cut off, the source and the drain of the MOS transistor M1 are connected, then the magnitude of the current flowing between the two alternating current ends of the full-bridge rectifier bridge stack Db is determined by the sum of the resistance value of a first resistor R1 and a second resistor R2, that is, the current flowing through the charge control circuit is not 0, and when the resistance value of the first resistor R1 is kept constant, the average current flowing through the charge control circuit corresponds to the time ratio of 0 level in the PWM signal inputted to the charge control circuit, and when the voltage floating or inputted to the positive signal terminal and the negative signal terminal of the charge control circuit is 0, the collector and the emitter of the optocoupler U1 are turned off, and the source and the drain of the MOS transistor M1 are turned on, and the current flowing through the charge control circuit can be adjusted by adjusting the resistance value of the first resistor R1.

In this embodiment, the tangential module of adjusting luminance is through the PWM signal when adjusting luminance the LED lamp of adjusting luminance rather than being connected, insert the PWM signal between charge control circuit's the positive signal end and the negative signal end, the proportion that 0 level is shared is big in this PWM signal, bidirectional thyristor Q1's conduction angle is big more, its biggest conduction angle size is restricted by first resistance R1's resistance value size, from this can cooperate with intelligent communication module, under the PWM signal control of intelligent communication module output, adjust the conduction angle size, thereby can adjust the luminance of the LED lamp of adjusting luminance through remote control, can adapt to present digital and intelligent development demand. In addition, when the voltage between the positive PWM end and the negative PWM end of the tangential dimming module is 0, the resistance value of the first resistor R1 is manually adjusted to adjust the conduction angle of the bidirectional thyristor Q1, so that the brightness of the dimmable LED lamp is manually adjusted. Therefore, the tangential dimming module can be connected with the existing intelligent communication module on the basis of the existing function of manually adjusting the brightness of the dimmable LED lamp, so that the functions of networking adjustment and remote operation are realized.

The invention also discloses an intelligent dimmer, which is further described in detail in the following with reference to the embodiment of the attached drawings.

Example (b): as shown in fig. 2, 3 and 4, an intelligent dimmer comprises a tangential dimming module for PWM signal adjustment, a rectifying circuit, an auxiliary power supply and an intelligent communication module, wherein the rectifying circuit has a first ac terminal, a second ac terminal, a positive output terminal and a negative output terminal, the rectifying circuit is used for converting an ac voltage connected between the first ac terminal and the second ac terminal into a dc voltage and outputting the dc voltage between the positive output terminal and the negative output terminal, the auxiliary circuit has an input terminal, an output terminal and a negative terminal, the intelligent communication module has a positive terminal, a negative terminal and a PWM terminal, the tangential dimming module has a first terminal T1, a second terminal T2, a positive PWM terminal and a PWM terminal, the first terminal T1 of the tangential dimming module is connected to the first ac terminal of the rectifying circuit and a connection terminal thereof is connected to a live wire connection terminal of the intelligent dimmer, the second ac terminal of the rectifying circuit is a neutral wire connection terminal of the intelligent dimmer, the second terminal T2 of the tangential dimming module is an output terminal of the intelligent dimmer, the positive output end of the rectification circuit is connected with the input end of the auxiliary power supply, the output end of the auxiliary power supply is respectively connected with the positive PWM end of the tangential dimming module and the positive electrode of the intelligent communication module, the PWM end of the intelligent communication module is connected with the negative PWM end of the tangential dimming module, and the negative electrode of the intelligent communication module and the negative electrode of the auxiliary power supply are connected with the negative output end of the rectification circuit; the tangential dimming module can change the voltage loaded between the live wire access end and the zero wire access end of the dimmable LED lamp connected with the tangential dimming module by changing the voltage phase at the moment of starting to be conducted between the first end T1 and the second end T2, namely, the conduction angle is adjusted, so as to adjust the brightness of the dimmable LED lamp, the tangential dimming module comprises a bidirectional thyristor Q1, a bidirectional trigger DB, a capacitor C and a charging control circuit, a first pole of the bidirectional thyristor Q1 is connected with one end of the charging control circuit, the connecting end of the bidirectional thyristor Q1 is the first end T1 of the tangential dimming module, a gate of the bidirectional thyristor Q1 is connected with one end of the bidirectional trigger DB, the other end of the bidirectional trigger DB, one end of the capacitor C is connected with the other end of the charging control circuit, the other end of the capacitor C is connected with a second pole of the bidirectional thyristor Q1, and the connecting end of the bidirectional thyristor Q1 is the second end T2 of the tangential dimming module, the first pole and the second pole of the bidirectional triode thyristor Q1 are cut off at the moment when the instantaneous value of the mains supply alternating voltage is zero voltage, the capacitor C is charged through the charging control circuit in the conversion process that the absolute value of the instantaneous value of the mains supply alternating voltage rises from zero voltage and then falls to zero voltage, when the voltage at the two ends of the capacitor C reaches the conducting voltage of the bidirectional triode trigger DB, the bidirectional triode trigger DB is conducted, the capacitor C discharges at the moment, then the conduction between the first pole and the second pole of the bidirectional triode thyristor Q1 is triggered, the dimmable LED lamp connected with the tangential dimming module is connected with the mains supply alternating voltage at the moment, the conducting state of the first pole and the second pole of the bidirectional triode thyristor Q1 is maintained until the current flowing between the first pole and the second pole of the bidirectional triode thyristor Q1 is smaller than the minimum current for maintaining the conduction, or the moment between the first pole and the second pole of the bidirectional thyristor Q1 is zero, when the first pole and the second pole of the bidirectional thyristor Q1 are cut off, the voltage between the live wire access end and the zero line access end of the dimmable LED lamp connected with the tangential dimming module is zero, and in this conversion process, the current of the charging control circuit is changed, so that the time when the voltage at the two ends of the capacitor C rises to the conducting voltage of the bidirectional trigger DB can be changed, that is, the phase position of the commercial power alternating voltage at the time when the first pole and the second pole of the bidirectional thyristor Q1 start conducting is adjusted, if the conducting time is advanced, the phase position of the conducting time is reduced, the conducting angle is increased, otherwise, the conducting angle is reduced, a PWM signal is used to be connected between the positive PWM end and the negative PWM end of the tangential dimming module, the PWM signal is used to control the phase position of the commercial power alternating voltage at the time when the first end T1 and the second end T2 of the tangential dimming module start conducting, and the charging control circuit further has a positive signal end and a negative signal end, the positive signal end of the charging control circuit is the positive PWM end of the tangential dimming module, and the negative signal end of the charging control circuit is the negative PWM end of the tangential dimming module; the charging control circuit comprises a full-bridge rectifier bridge stack Db, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first diode D1, a MOS tube M1 and an optical coupler U1, the first resistor R1 is an adjustable resistor, the first diode D1 is a voltage stabilizing diode, one alternating current end of the full-bridge rectifier bridge stack Db is a first end T1 of the charging control circuit, the other alternating current end of the full-bridge rectifier bridge stack Db is a second end T2 of the charging control circuit, a positive output end of the full-bridge rectifier bridge stack Db, one end of the first resistor R1 and one end of the third resistor R3 are connected, the other end of the first resistor R1 and one end of the second resistor R2 are connected, the other end of the second resistor R2 is connected with a drain of the MOS tube M1, the other end of the third resistor R3, a negative electrode of the first diode D1, a gate of the MOS tube M1 and a source of the optical coupler U1 are connected with a source of the MOS tube M1, a positive collector of the MOS tube M599 and a collector of the MOS tube M599, An emitter of the optical coupler U1 is connected with a negative output end of the full-bridge rectifier bridge stack Db, an anode of the optical coupler U1 is connected with one end of a fourth resistor R4, the other end of the fourth resistor R4 is a positive signal end of a charging control circuit, a cathode of the optical coupler U1 is a negative signal end of the charging control circuit, when the positive signal end and the negative signal end of the charging control circuit are at 1 level, a collector and an emitter of the optical coupler U1 are connected, a source and a drain of the MOS transistor M1 are cut off, then the magnitude of current flowing between two alternating current ends of the full-bridge rectifier bridge stack Db is zero, namely the current flowing through the charging control circuit is 0, when the positive signal end and the negative signal end of the charging control circuit are connected to 0 level, the collector and the emitter of the optical coupler U1 are cut off, the source and the drain of the MOS transistor M1 are connected, then the magnitude of the current flowing between the two alternating current ends of the full-bridge rectifier bridge stack Db is determined by the sum of the resistance value of a first resistor R1 and a second resistor R2, that is, the current flowing through the charging control circuit is not 0, when the resistance value of the first resistor R1 is kept unchanged, the average current flowing through the charging control circuit corresponds to the time ratio of 0 level in the PWM signal accessed by the charging control circuit, when the voltages suspended or accessed at the positive signal end and the negative signal end of the charging control circuit are 0, the collector and the emitter of the optocoupler U1 are cut off, the source and the drain of the MOS transistor M1 are connected, and the current flowing through the charging control circuit can be adjusted by adjusting the resistance value of the first resistor R1;

when intelligent light modulator with can adjust luminance the LED lamp and be connected, when adjusting luminance the LED lamp, the commercial power live wire is connected to intelligent light modulator's live wire link, commercial power zero line is connected to intelligent light modulator's zero line link, intelligent light modulator's output and the live wire link of the LED lamp of can adjusting luminance are connected, the zero line link and the commercial power zero line of the LED lamp of can adjusting luminance are connected, when intelligent light modulator received the wireless control signal that outside wireless terminal sent, intelligent communication module converts received wireless control signal into corresponding PWM signal and exports at its PWM end, the inside two-way silicon controlled rectifier Q1 of the control circuit that charges at this moment begins to switch on at the voltage phase place that corresponds, thereby adjust the LED lamp of can adjusting luminance according to corresponding luminance.