阅读说明：本技术 一种供电电源的控制电路 (Control circuit of power supply ) 是由 唐小军 于 2019-04-22 设计创作，主要内容包括：一种供电电源的控制电路,包括用于为光源供电的供电模块、与供电模块的第一接线端连接的开关模块、与开关模块连接的信号检测模块、与信号检测模块连接的信号转换模块,以及与信号转换模块连接的信号控制模块,信号控制模块与供电模块连接；供电模块的第一接线端接入第一电压信号,开关模块用于控制第一电压信号是否传输至信号转换模块,当开关模块导通时,第一电压信号传输至信号检测模块进行检测,然后第一电压信号继续传输至信号转换模块,信号转换模块用于将第一电压信号转换为第一电信号并传输至信号控制模块,信号控制模块用于将第一电信号转换为控制信号并传输到供电模块,通过控制信号对供电模块的输出进行调节。(A control circuit of a power supply comprises a power supply module for supplying power to a light source, a switch module connected with a first wiring end of the power supply module, a signal detection module connected with the switch module, a signal conversion module connected with the signal detection module and a signal control module connected with the signal conversion module, wherein the signal control module is connected with the power supply module; first voltage signal is inserted to power module's first wiring end, switch module is used for controlling whether first voltage signal transmits to signal conversion module, when switch module switches on, first voltage signal transmits to signal detection module and detects, then first voltage signal continues to transmit to signal conversion module, signal conversion module is used for converting first voltage signal into first signal of telecommunication and transmits to signal control module, signal control module is used for converting first signal of telecommunication into control signal and transmits to power module, adjust power module's output through control signal.)

1. A control circuit of a power supply is characterized by comprising a power supply module for supplying power to a light source, a switch module connected with a first wiring terminal of the power supply module, a signal detection module connected with the switch module, a signal conversion module connected with the signal detection module and a signal control module connected with the signal conversion module, wherein the signal control module is connected with the power supply module;

the first terminal of the power supply module is connected with a first voltage signal, the switch module is used for controlling whether the first voltage signal is transmitted to the signal conversion module, when the switch module is switched on, the first voltage signal is transmitted to the signal detection module for detection, then the first voltage signal is continuously transmitted to the signal conversion module, the signal conversion module is used for converting the first voltage signal into a first electric signal and transmitting the first electric signal to the signal control module, the signal control module is used for converting the first electric signal into a control signal and transmitting the control signal to the power supply module, and the output of the power supply module is adjusted through the control signal.

2. The control circuit of claim 1, wherein the signal conversion module comprises a photo coupler, a first resistor and a second resistor, the photo coupler comprises a light emitting source and a light receiving device, the light emitting source comprises a first input terminal and a first output terminal, the light receiving device comprises a second input terminal and a second output terminal, the first input terminal of the light emitting source is connected to the switch module, one end of the first resistor is connected to the second input terminal of the light receiving device, the other end of the first resistor is connected to an external voltage, the second input terminal of the light receiving device is connected to one end of the second resistor, the second output terminal of the light receiving device is grounded, and when the light receiving device is turned on, the other end of the second resistor outputs a second electrical signal and transmits the second electrical signal to the signal control module.

3. The control circuit of a power supply according to claim 2, wherein the applied voltage is in a range of 3.0V to 5.0V.

4. The control circuit of power supply according to claim 2, further comprising a protection module disposed between said switching module and said signal conversion module.

5. The control circuit of the power supply according to claim 4, wherein the protection module comprises a fuse and a third resistor, one end of the fuse is connected to the switch module, the other end of the fuse is connected to one end of the third resistor, and the other end of the third resistor is connected to the signal conversion module.

6. The control circuit of claim 5, further comprising a voltage stabilizing module, wherein one end of the voltage stabilizing module is connected to the first input end of the light source of the optoelectronic coupler, and the other end of the voltage stabilizing module is connected to the first output end of the light source of the optoelectronic coupler.

7. The control circuit of claim 6, wherein the voltage regulator module is a voltage regulator diode, a negative electrode of the voltage regulator diode is connected to the first input terminal of the light source of the photocoupler, and a positive electrode of the voltage regulator diode is connected to the first output terminal of the light source of the photocoupler.

8. The power supply control circuit according to any one of claims 1 to 7, wherein the switch module is a self-locking wall switch or a non-self-locking wall switch.

9. The control circuit of an electric power supply according to any one of claims 1 to 7, wherein the first electric signal is a PWM signal.

10. The control circuit of the power supply according to any one of claims 1 to 7, wherein the signal control module is an MCU.

Technical Field

The invention belongs to the technical field of power supplies, and particularly relates to a control circuit of a power supply.

Background

In the field of lighting, due to the advantages of high Light emitting efficiency, low heat generation, power saving, and long service life of LED (Light emitting diode) Light sources, the development of technology and the improvement of living standard of people are becoming more and more widespread. With the continuous development of LED technology, manufacturers begin to research control circuits of power supplies for LEDs, but the control circuits of the existing power supplies are complex and high in cost, and are difficult to meet the demands of the public.

Disclosure of Invention

The invention aims to provide a control circuit of a power supply, and aims to solve the technical problems of complexity and high cost of the control circuit of the power supply in the prior art.

The invention is realized in such a way, and provides a control circuit of a power supply, which comprises a power supply module for supplying power to a light source, a switch module connected with a first wiring end of the power supply module, a signal detection module connected with the switch module, a signal conversion module connected with the signal detection module, and a signal control module connected with the signal conversion module, wherein the signal control module is connected with the power supply module;

the power supply system comprises a power supply module, a signal conversion module, a signal detection module, a signal control module and a switch module, wherein a first terminal of the power supply module is connected with a first voltage signal, the switch module is used for controlling whether the first voltage signal is transmitted to the signal conversion module, when the switch module is switched on, the first voltage signal is transmitted to the signal detection module for detection, then the first voltage signal is continuously transmitted to the signal conversion module, the signal conversion module is used for converting the first voltage signal into a first electric signal and transmitting the first electric signal to the signal control module, the signal control module is used for converting the first electric signal into a control signal and transmitting the control signal to the power supply module, and the output of the power supply module is adjusted through the control signal.

Further, the signal conversion module includes a photoelectric coupler, a first resistor and a second resistor, the photoelectric coupler includes a light emitting source and a light receiving device, the light emitting source includes a first input end and a first output end, the light receiving device includes a second input end and a second output end, the first input end of the light emitting source is connected with the switch module, one end of the first resistor is connected with the second input end of the light receiving device, the other end of the first resistor is connected to an external voltage, the second input end of the light receiving device is connected with one end of the second resistor, the second output end of the light receiving device is grounded, and when the light receiving device is switched on, the other end of the second resistor outputs a second electrical signal and transmits the second electrical signal to the signal control module.

Further, the range of the applied voltage is 3.0V to 5.0V.

Furthermore, the protection module is arranged between the switch module and the signal conversion module.

Furthermore, the protection module comprises a fuse and a third resistor, one end of the fuse is connected with the switch module, the other end of the fuse is connected with a first input end of a light source of the photoelectric coupler, and the other end of the third resistor is connected with the signal conversion module.

And the other end of the voltage stabilizing module is connected with the first output end of the luminous source of the photoelectric coupler.

Further, the voltage stabilizing module is a voltage stabilizing diode, a cathode of the voltage stabilizing diode is connected with a first input end of a light source of the photoelectric coupler, and an anode of the voltage stabilizing diode is connected with a first output end of the light source of the photoelectric coupler.

Further, the switch module is a self-locking wall control switch or a non-self-locking wall control switch.

Further, the first electric signal is a PWM signal.

Further, the signal control module is an MCU.

The control circuit of the power supply comprises a power supply module, a switch module, a signal conversion module and a signal control module, when the switch module is switched on, a first voltage signal is transmitted to the signal conversion module and converted into a first electric signal, the signal control module receives the first electric signal and converts the first electric signal into a control signal to be transmitted to the power supply module, and the output of the power supply module is adjusted through the control signal, so that the light source is adjusted in light and color or switched.

Drawings

FIG. 1 is a schematic diagram of a control circuit of a power supply according to an embodiment of the invention;

fig. 2 is a schematic diagram of a protection module, a voltage stabilizing module and a signal conversion module according to an embodiment of the present invention;

fig. 3 is an equivalent circuit diagram of a power supply module according to an embodiment of the present invention.

The designations in the figures mean: the LED driving circuit comprises a power supply module 10, a switch module 20, a protection module 30, a signal detection module 40, a voltage stabilizing module 50, a signal conversion module 60, a signal control module 70, a light source 80, a fuse F1, a first resistor R1, a second resistor R2, a third resistor R3, a voltage stabilizing diode ZD1 and a photoelectric coupler U1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the patent. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

In order to explain the technical solution of the present invention, the following detailed description is made with reference to the specific drawings and examples.

Referring to fig. 1 and fig. 2, a control circuit of a power supply according to an embodiment of the present invention includes a power supply module 10, a switch module 20, a signal detection module 40, a signal conversion module 60, and a signal control module 70, where the power supply module 10 includes a first terminal, a second terminal, a power output end, and a power input end, the first terminal and the second terminal are used for connecting power, and the power output end and the power input end are used for supplying power to a light source 80;

one end of the switch module 20 is connected to the first terminal of the power supply module 10, the other end of the switch module 20 is connected to one end of the signal detection module 40, the other end of the signal detection module 40 is connected to one end of the signal conversion module 60, the other end of the signal conversion module 60 is connected to one end of the signal control module 70, the other end of the signal control module 70 is connected to the power supply module 10, the first terminal of the power supply module 10 is connected to a first voltage signal, the switch module 20 is used for controlling whether the first electrical signal is transmitted to the signal conversion module 60, when the switch module 20 is turned on, the first voltage signal is transmitted to the signal detection module 40 for detection, then the first voltage signal is continuously transmitted to the signal conversion module 60, the signal conversion module 60 is used for converting the first voltage signal into a first electrical signal and transmitting the first electrical signal to the signal control module 70, the signal control module 70 is configured to convert the first electrical signal into a control signal and transmit the control signal to the power supply module 10, and adjust an output of the power supply module 10 according to the control signal, so as to adjust, color, or switch the light source 80.

The control circuit of the power supply comprises a power supply module 10, a switch module 20, a signal conversion module 60 and a signal control module 70, when the switch module 20 is switched on, a first voltage signal is transmitted to the signal conversion module 60 and converted into a first electric signal, the signal control module 70 receives the first electric signal and converts the first electric signal into a control signal to be transmitted to the power supply module 10, and the output of the power supply module 10 is adjusted through the control signal, so that the light source 80 is dimmed, toned or switched.

In an embodiment of the present invention, the first terminal and the second terminal are respectively connected to a Line (L) and a Neutral (N) Line, the Line transmits the first voltage signal to the power module 10 through the first terminal, and the switch module 20 is connected to the first terminal, so that the first voltage signal is also transmitted to the switch module 20. According to the practical use, other ways of connecting the power may also be adopted, for example, the first terminal is connected to the positive electrode of the battery, and the second terminal is connected to the negative electrode of the battery, as long as the normal power supply of the power supply module 10 can be ensured, and the embodiment of the present invention is not limited herein.

In an embodiment of the present invention, as shown in fig. 2, the signal conversion module 60 includes a photocoupler U1, a first resistor R1 and a second resistor R2, the photocoupler U1 includes a light emitting source and a light receiving device, the light emitting source includes a first input end and a first output end, the light receiving device includes a second input end and a second output end, the first input end of the light emitting source is connected to the other end of the switch module 20, the first output end of the light emitting source is connected to the zero line, one end of the first resistor R1 is connected to the second input end of the light receiving device, the other end of the first resistor R1 is connected to an external voltage, the second input end of the light receiving device is connected to one end of a second resistor R2, the second output end of the light receiving device is grounded, when the light receiving device is turned on, the first voltage signal is transmitted to the light emitting source through the switch module 20, the light emitting source is turned on, the light receiving device is, the external voltage, the light receiver and the ground are conducted, at this time, the other end of the second resistor R2 outputs a first electrical signal and transmits the first electrical signal to the signal control module 70, and the signal control module 70 converts the first electrical signal into a control signal to control the output voltage of the power supply module 10. In order to prevent safety accidents, the applied voltage is not too large, and is preferably in the range of 3.0V to 5.0V, and more preferably, the applied voltage is 3.3V.

Specifically, the light receiver is a phototransistor, one end of the first resistor R1 is connected to a collector of the phototransistor, one end of the second resistor R2 is connected to the collector of the phototransistor, and an emitter of the phototransistor is grounded.

In an embodiment of the present invention, as shown in fig. 2, the control circuit of the power supply of the present invention further includes a protection module 30 disposed between the switch module 20 and the signal conversion module 60 to perform a protection function to prevent a safety accident. Optionally, the protection module 30 may be disposed between the switch module 20 and the signal detection module 40, or between the signal detection module 40, and preferably, the protection module 30 is disposed between the switch module 20 and the signal detection module 40.

Specifically, the protection module 30 includes a fuse F1 and a third resistor R1, one end of the fuse F1 is connected to the switch module 20, the other end of the fuse F1 is connected to one end of the third resistor R1, and the other end of the third resistor R1 is connected to the signal conversion unit, that is, the other end of the third resistor R1 is connected to the first input terminal of the light source of the photocoupler U1.

In an embodiment of the present invention, as shown in fig. 2, the control circuit of the power supply of the present invention further includes a voltage stabilizing module 50, wherein one end of the voltage stabilizing module 50 is connected to the first input terminal of the light source 80 of the photocoupler U1, and the other end of the voltage stabilizing module 50 is connected to the first output terminal of the light source 80 of the photocoupler U1, so as to ensure that the voltage of the light source 80 is substantially unchanged and the light can be stably emitted.

Specifically, the voltage stabilizing module 50 is a voltage stabilizing diode ZD1, a cathode of the voltage stabilizing diode ZD1 is connected to a first input end of the light source of the photocoupler U1, and an anode of the voltage stabilizing diode ZD1 is connected to a first output end of the light source of the photocoupler U1, that is, an anode of the voltage stabilizing diode ZD1 is connected to the zero line.

In one embodiment of the present invention, the switch module 20 is a self-locking wall switch or a non-self-locking wall switch.

Optionally, when the switch module 20 is a self-locking wall switch, in a power-on condition, the signal detection module 40 may detect a high-low level by performing a short-press operation on the self-locking wall switch, and for the detected first voltage signal, the signal conversion module 60 converts the first voltage signal into a PWM (Pulse Width Modulation) signal or other signals and transmits the PWM signal or other signals to the signal control module 70, and the signal control module 70 controls the power supply module 10 to switch on or off.

Optionally, when the switch module 20 is a self-locking wall switch, in a power-on situation, by performing a long key hold operation on the self-locking wall switch, the signal detection module 40 may record a time length of the detected first voltage signal, and according to the recorded time length of the first voltage signal, after the signal conversion module 60 converts the first voltage signal into a PWM signal or other signals, the signal control module 70 may perform dimming or color mixing control on the power supply module 10.

Alternatively, when the switch module 20 is a non-self-locking wall switch, in a power-on situation, when the non-self-locking wall switch is switched, the signal detection module 40 can detect the high and low levels, and for the detected first voltage signal, the signal conversion module 60 converts the voltage signal into a PWM signal or other signals, and transmits the PWM signal or other signals to the signal control module 70, and the signal control module 70 controls the power supply module 10 to switch.

Specifically, referring to fig. 1 and fig. 2, the signal control module 70 converts the PWM signal into a PWM1 signal and a PWM2 signal, the PWM1 signal and the PWM2 signal are transmitted to the power supply module 10 for dimming and color adjusting, the PWM1 signal is used for dimming, and the PWM2 signal is used for color adjusting.

Specifically, as shown in fig. 3, the power supply module 10 includes a fuse F2, diodes D1 to D8, diodes TV1 to TV2, resistors R3 to R20, capacitors C1 to C5, a transformer T1, a chip U1, a triode Q3, and MOS (Metal oxide semiconductor field effect transistor) transistors Q1, Q2, and Q4;

one end of a fuse F2 is connected with a live wire, the other end of the fuse F2 is connected with the anode of a diode D3, the cathode of a diode D3 is connected with the anode of a capacitor C2, the cathode of a capacitor C2 is grounded, the cathode of a diode D7 is connected with the live wire, the anode of a diode D7 is grounded, the anode of a diode D6 is connected with the anode of a diode D7, the cathode of a diode D6 is connected with a zero line, and the anode of a diode D2 is connected with the zero line. The cathode of a diode D2 is connected with the anode of an electrolytic capacitor C2, one end of a resistor R4 is connected with the anode of an electrolytic capacitor C2, the other end of a resistor R4 is connected with the cathode of a diode D4, the other end of a diode D4 is connected with the drain of a MOS transistor Q4, the source of a MOS transistor Q4 is connected with one end of a resistor R20, the other end of a resistor R20 is grounded, one end of a resistor R18 is connected with one end of a resistor R20, the other end of the resistor R20 is connected with the gate of the MOS transistor Q20, one end of the resistor R20 is connected with one end of the resistor R20, the other end of the resistor R20 is connected with the Isense end of the chip U20, one end of the resistor R20 is connected with the gate of the MOS transistor Q20, the other end of the resistor R20 is connected with the Drive end of the chip U20, one end of the capacitor C20 is grounded, the other end of the resistor R20 is connected with the ADim end of the chip U20, and the PWM end of the chip U20, one end of a resistor R11 is connected with a PWM end of a chip U1, the other end of the resistor R11 is connected with a PWM1 signal, one end of a resistor R14 is connected with a COM end of a chip U1, the other end of a resistor R14 is connected with one end of a capacitor C4, the other end of a capacitor C4 is grounded, one end of a resistor R15 is connected with a ZCS end of a chip U1, one end of a resistor R15 sends out a ZCS signal, one end of a resistor R16 is connected with one end of a resistor R15, the other end of a resistor R16 is grounded, a GND end of a chip U1 is grounded, one end of a capacitor C1 is connected with one end of a resistor R14, the other end of a capacitor C1 is connected with the other end of a resistor R14, one end of a resistor R4 is connected with one end of a first primary winding of a transformer T1, the other end of a first primary winding of the transformer T1 is connected with an anode of a diode D1, one end of a second primary winding of the transformer T1, the other end of the second primary winding of the transformer T1 is connected with the negative electrode of the electrolytic capacitor EC1, one end of the resistor R7 is connected with the positive electrode of the electrolytic capacitor EC1, the other end of the resistor R7 is connected with the negative electrode of the diode D8, the positive electrode of the diode D8 is connected with one end of the second primary winding of the transformer T1, one end of the secondary winding of the transformer T1 is connected with one end of the diode D1, the other end of the secondary winding of the transformer T1 is grounded, the positive electrode of the electrolytic capacitor C3 is connected with the other end of the diode D1, the negative electrode of the electrolytic capacitor C3 is grounded, the other end of the diode D1 outputs a VCC signal, one end of the resistor R5 is connected with the other end of the diode D1, the other end of the resistor R5 is connected with one end of the resistor R9, the other end of the resistor R9 is grounded, the collector of the triode Q3 is connected with one end of the resistor R9, the emitter, the base of the transistor Q3 is connected to one end of a resistor R8, the other end of the resistor R8 is connected to the PWM2 signal, one end of a resistor R8 is connected to one end of a resistor R13, the other end of the resistor R13 is grounded, the source of the MOS transistor Q1 is grounded, the gate of the MOS transistor Q1 is connected to one end of a resistor R9, the drain of the MOS transistor Q1 outputs the signal C-, the cathode of the diode TV1 is connected to the drain of the MOS transistor Q1, the anode of the diode TV1 is grounded, the cathode of the diode D1 is connected to the drain of the MOS transistor Q1, the anode of the diode D1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the other end of the diode D1, one end of the resistor R1 is connected to the anode of the diode D1, the other end of the resistor R1 is grounded, the gate of the diode Q1 is connected to the anode of the diode D1, the drain of the transistor Q1 is connected to the drain of the transistor Q36, the anode of the diode TV2 is grounded, and the duty ratio of the output to the MOS transistor Q4 is controlled by the chip U1, so that the magnitude of the VCC signal output by the transformer T1 is controlled, the brightness of the light source 10 is adjusted, and the light source 10 is color-adjusted by the W-signal and the signal C-.

Specifically, the signal control module 70 is a Micro Control Unit (MCU) such as a Zigbee module or a Ble module.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.