阅读说明：本技术 一种led驱动方法以及驱动电路 (LED driving method and driving circuit ) 是由 王言强 楚献超 尤婷婷 于 2021-01-16 设计创作，主要内容包括：本申请涉及LED灯控制的领域,尤其涉及一种LED灯闪驱动控制方法以及驱动电路,其包括供电模块、中央处理模块以及LED发光模块,供电模块用于对中央处理模块进行供电,中央处理模块用于控制LED的通断或者导通模式,LED发光模块为执行中央处理模块的发光器件,能够产生各种泡闪以及不同颜色的灯光。(The application relates to the field of LED lamp control, in particular to an LED lamp flashing drive control method and a drive circuit, and the LED lamp flashing drive control method comprises a power supply module, a central processing module and an LED light emitting module, wherein the power supply module is used for supplying power to the central processing module, the central processing module is used for controlling the on-off or on-state mode of an LED, and the LED light emitting module is a light emitting device for executing the central processing module and can generate various kinds of bulb flashing and different colors of light.)

1. The utility model provides a LED lamp drives control circuit that dodges which characterized in that: the method comprises the following steps:

the power supply module (1) is used for supplying power to the central processing module (2), and the power supply module (1) comprises a first power supply port N for outputting forward current and a second power supply port L for outputting reverse current; the first power supply port N and the second power supply port L are both connected with a rectification circuit BR1 and output from the output end of a rectification circuit BR 1;

the central processing module (2), the central processing module (2) includes the program control chip U1 and control circuit, the program control chip U1 includes the power supply end VDD, the ground end GND, the mode selection end K0 and the first signal output end A1; the power supply end VDD is connected with the output end of the rectifying circuit BR1, and the mode selection end K0 is connected to the ground wire through a switch button K1;

the control circuit comprises a first control unit comprising a first NPN transistor Q1, a third NPN transistor Q3, a sixth PNP transistor Q6; the base electrode of the first NPN triode Q1 is connected with a first signal output end A1, the emitter electrode of the first NPN triode Q1 is connected with the base electrode of a third NPN triode Q3, and the emitter electrode of the third NPN triode Q3 is connected with the ground wire; a collector of the first NPN triode Q1 is connected with a base of a sixth PNP triode Q6, an emitter of the sixth PNP triode Q6 is connected with an output end of the rectifier circuit BR1, a collector of the sixth PNP triode Q6 is provided with a reverse connection point LED-, and a collector of the third NPN triode Q3 is provided with a positive connection point LED +;

an LED light module (3), the LED light module (3) comprising a first LED group and a second LED group; the first LED group and the first LED group are connected in series in the forward direction to form a forward connection point LED + and a reverse connection point LED-, the forward connection point LED + of the LED light-emitting module (3) is connected with the forward connection point LED + of the control circuit, and the reverse connection point LED-of the LED light-emitting module (3) is connected with the reverse connection point LED-of the control circuit.

2. The LED lamp flash driving control circuit according to claim 1, wherein: the program control chip U1 further includes a second signal output terminal B1, and the control circuit further includes a second control unit including a second NPN transistor Q2, a fourth NPN transistor Q4, and a fifth PNP transistor Q5; the base electrode of the second NPN triode Q2 is connected with a second signal output end B1, the emitter electrode of the second NPN triode Q2 is connected with the base electrode of a fourth NPN triode Q4, and the emitter electrode of the fourth NPN triode Q4 is connected with the ground wire; the collector of the second NPN triode Q2 is connected to the base of a fifth PNP triode Q5, the emitter of the fifth PNP triode Q5 is connected to the output of the rectifier circuit BR1, the collector of the fifth PNP triode Q5 is connected to the positive connection point LED +, and the collector of the fourth NPN triode Q4 is connected to the reverse connection point LED-.

3. The LED lamp flash driving control circuit according to claim 2, wherein: a first resistor R1 is connected between the base of the first NPN triode Q1 and the first signal output end A1, and a fifth resistor R5 is connected between the base of the second NPN triode Q2 and the second signal output end B1; and/or a third resistor R3 is connected between the emitter of the first NPN triode Q1 and the base of the third NPN triode Q3, and a seventh resistor R7 is connected between the emitter of the second NPN triode Q2 and the base of the fourth NPN triode Q4.

4. The LED lamp flash driving control circuit according to claim 2, wherein: a second resistor R2 is connected between the base electrode of the first NPN triode Q1 and the ground wire, and a sixth resistor R6 is connected between the base electrode of the second NPN triode Q2 and the ground wire; a fourth resistor R4 is connected between the base of the third NPN triode Q3 and the ground wire, and an eighth resistor R8 is connected between the base of the fourth NPN triode Q4 and the ground wire; a ninth resistor R9 is connected between the base and the emitter of the fifth PNP triode Q5, and a tenth resistor R10 is connected between the base and the emitter of the sixth PNP triode Q6.

5. The LED lamp flash driving control circuit according to claim 1, wherein: the power supply module (1) further comprises a rectification circuit BR1, wherein the rectification circuit BR1 comprises a first rectification diode D1, a second rectification diode D2, a third rectification diode D3 and a fourth rectification diode D4;

the anode of the first rectifying diode D1 is connected with the cathode of the fourth rectifying diode D4, and the cathode of the first rectifying diode D1 is connected with the cathode of the second rectifying diode D2; the anode of the third rectifying diode D3 is connected with the anode of the fourth rectifying diode D4, and the cathode of the third rectifying diode D3 is connected with the anode of the second rectifying diode D2;

the first power supply port N is connected to the first rectifying diode D1, and the second power supply port L is connected to the anode of the second rectifying diode D2.

6. The LED lamp flash drive control circuit according to claim 5, wherein: the rectifier circuit BR1 further includes a first capacitor C1, one end of the first capacitor C1 is connected to a cathode of a first rectifier diode D1, the other end of the first capacitor C1 is connected to an anode of a third rectifier diode D3, and an anode of the third rectifier diode D3 is grounded.

7. The LED lamp flash driving control circuit according to claim 1, wherein: the central processing module (2) comprises a voltage stabilizing filter circuit which comprises a first voltage stabilizing diode D1, a thirteenth resistor R13 and a second capacitor C2; the anode of the first voltage-stabilizing diode D1 is grounded, the cathode of the first voltage-stabilizing diode D1 is connected with the power supply end VDD, and the thirteenth resistor R13 is connected between the output end of the rectifying circuit BR1 and the power supply end VDD; one end of the second capacitor C2 is connected to the power supply terminal VDD, and the other end is connected to the ground terminal GND.

8. The LED lamp flash driving control circuit according to claim 1, wherein: the first light-emitting diode group and/or the second light-emitting diode group are/is an electrodeless double-color LED lamp.

9. A method for controlling LED lamp flash drive is characterized in that: the LED lamp flash drive control circuit comprises the LED lamp flash drive control circuit as claimed in any one of claims 1-8; further comprising:

generating a light control signal, wherein the light control signal is output to the control circuit from a first signal output end A1 and a second signal output end B1 of the program control chip to control the light emitting state of the LED light emitting module (3);

the light control signal comprises at least one of a first color bubble flashing mode, a second color bubble flashing mode, a first color constant brightness mode and a second color constant brightness mode.

10. The LED lamp flash driving control method according to claim 9, wherein: further comprising: and generating a time control signal, wherein the time control signal is used for the duration of the light control signal and the sequence of the light control signal.

Technical Field

The present disclosure relates to the field of LED lamp control, and in particular, to an LED driving method and a driving circuit.

Background

Light Emitting Diodes (LEDs) are used as indicator lights in circuits and instruments, or constitute characters, numbers, and screen displays, and can also be directly used as illumination light sources. The light emitting diode can synthesize colored light according to the proportional mixing of the three primary colors of light, namely red, green and blue, so as to realize the application of the colored light. The light emitting diode is used as a novel light source, has the characteristics of energy conservation, environmental protection and high efficiency, and is mature and widely applied to various fields.

The LED driving circuit is an important component of the LED lamp and converts electric energy acquired from the outside into stable direct current to provide power for the LED lamp beads connected with the LED driving circuit.

In view of the above-mentioned related technologies, the inventor believes that there is an LED driving circuit that can generally only provide a single driving state for an LED lamp bead, that is, even if the LED driving circuit is connected to a plurality of LED lamp bead groups with different light colors, the LED driving circuit can only provide a single operating mode, the light color tone of the LED lamp is fixed, and it is difficult for a user to adjust the light color tone of the LED lamp according to the user's own needs.

Disclosure of Invention

In order to facilitate control over the working mode of the LED lamp, the application provides an LED driving method and a driving circuit.

In a first aspect, the present application provides an LED lamp flashing driving control circuit, which adopts the following technical scheme:

an LED lamp flash drive control circuit, comprising:

the power supply module is used for supplying power to the central processing module and comprises a first power supply port N for outputting forward current and a second power supply port L for outputting reverse current; the first power supply port N and the second power supply port L are both connected with a rectification circuit BR1 and output from the output end of a rectification circuit BR 1;

the central processing module comprises a program control chip U1 and a control circuit, wherein the program control chip U1 comprises a power supply terminal VDD, a ground terminal GND, a mode selection terminal K0 and a first signal output terminal A1; the power supply end VDD is connected with the output end of the rectifying circuit BR1, and the mode selection end K0 is connected to the ground wire through a switch button K1;

the control circuit comprises a first control unit comprising a first NPN transistor Q1, a third NPN transistor Q3, a sixth PNP transistor Q6; the base electrode of the first NPN triode Q1 is connected with a first signal output end A1, the emitter electrode of the first NPN triode Q1 is connected with the base electrode of a third NPN triode Q3, and the emitter electrode of the third NPN triode Q3 is connected with the ground wire; a collector of the first NPN triode Q1 is connected with a base of a sixth PNP triode Q6, an emitter of the sixth PNP triode Q6 is connected with an output end of the rectifier circuit BR1, a collector of the sixth PNP triode Q6 is provided with a reverse connection point LED-, and a collector of the third NPN triode Q3 is provided with a positive connection point LED +;

an LED light module comprising a first LED group and a second LED group; the first LED group and the first LED group are connected in series in the forward direction to form a forward connection point LED + and a reverse connection point LED-, the forward connection point LED + of the LED light-emitting module is connected with the forward connection point LED + of the control circuit, and the reverse connection point LED-of the LED light-emitting module is connected with the reverse connection point LED-of the control circuit.

By adopting the technical scheme, the power supply module is used for supplying power to the central processing module, and the first power supply port N and the second power supply port L are both connected with the rectification circuit BR1, so that electric energy of the positive half cycle of alternating current and electric energy of the negative half cycle of alternating current can be output through the rectification circuit BR1, and full utilization of the alternating current can be realized; the program control chip in the central processing module can realize the conduction state of the control circuit according to the control program preset in the central processing module or the switching of the switch button K1, so that the light emitting state of the LED light emitting module is controlled.

Optionally, the program control chip U1 further includes a second signal output terminal B1, and the control circuit further includes a second control unit, where the second control unit includes a second NPN transistor Q2, a fourth NPN transistor Q4, and a fifth PNP transistor Q5; the base electrode of the second NPN triode Q2 is connected with a second signal output end B1, the emitter electrode of the second NPN triode Q2 is connected with the base electrode of a fourth NPN triode Q4, and the emitter electrode of the fourth NPN triode Q4 is connected with the ground wire; the collector of the second NPN triode Q2 is connected to the base of a fifth PNP triode Q5, the emitter of the fifth PNP triode Q5 is connected to the output of the rectifier circuit BR1, the collector of the fifth PNP triode Q5 is connected to the positive connection point LED +, and the collector of the fourth NPN triode Q4 is connected to the reverse connection point LED-.

By adopting the technical scheme, the first control unit and the second control unit are connected to form a push-pull circuit, so that the two control circuits are integrated into two symmetrical conducting circuits for controlling the light emitting state of the LED light emitting module and increasing the types of light control signals.

Optionally, a first resistor R1 is connected between the base of the first NPN triode Q1 and the first signal output end a1, and a fifth resistor R5 is connected between the base of the second NPN triode Q2 and the second signal output end B1; and/or a third resistor R3 is connected between the emitter of the first NPN triode Q1 and the base of the third NPN triode Q3, and a seventh resistor R7 is connected between the emitter of the second NPN triode Q2 and the base of the fourth NPN triode Q4.

By adopting the technical scheme, the resistor connected in series to the base electrode of the triode can block current, so that the effect of reducing the current is achieved, the base electrode current of the triode works within an allowable range, and the working reliability of the triode and a circuit is ensured.

Optionally, a second resistor R2 is connected between the base of the first NPN triode Q1 and the ground, and a sixth resistor R6 is connected between the base of the second NPN triode Q2 and the ground; a fourth resistor R4 is connected between the base of the third NPN triode Q3 and the ground wire, and an eighth resistor R8 is connected between the base of the fourth NPN triode Q4 and the ground wire; a ninth resistor R9 is connected between the base and the emitter of the fifth PNP triode Q5, and a tenth resistor R10 is connected between the base and the emitter of the sixth PNP triode Q6.

By adopting the technical scheme, the resistor connected in parallel between the base electrode and the emitter electrode of the triode enables the internal resistance between the base electrode and the emitter electrode to form resistor voltage division, a static working point of the base electrode of the triode is provided, and the energy of the electrode is consumed on the resistor connected in parallel when the power is off, so that the reliable turn-off of the triode is ensured.

Optionally, the power supply module further includes a rectifying circuit BR1, where the rectifying circuit BR1 includes a first rectifying diode D1, a second rectifying diode D2, a third rectifying diode D3, and a fourth rectifying diode D4;

the anode of the first rectifying diode D1 is connected with the cathode of the fourth rectifying diode D4, and the cathode of the first rectifying diode D1 is connected with the cathode of the second rectifying diode D2; the anode of the third rectifying diode D3 is connected with the anode of the fourth rectifying diode D4, and the cathode of the third rectifying diode D3 is connected with the anode of the second rectifying diode D2;

the first power supply port N is connected to the first rectifying diode D1, and the second power supply port L is connected to the anode of the second rectifying diode D2.

By adopting the technical scheme, the first rectifier diode D1, the second rectifier diode D2, the third rectifier diode D3 and the fourth rectifier diode D4 are connected to form a bridge rectifier circuit, so that the electric energy of the alternating current can be fully utilized.

Optionally, the rectifier circuit BR1 further includes a first capacitor C1, one end of the first capacitor C1 is connected to a cathode of a first rectifier diode D1, the other end of the first capacitor C1 is connected to an anode of a third rectifier diode D3, and an anode of the third rectifier diode D3 is grounded.

By adopting the technical scheme, the first capacitor C1 is mainly used for compensating reactive power of inductive load of the power system, so that power factor is improved, voltage quality is improved, and line loss is reduced.

Optionally, the central processing module includes a voltage stabilizing filter circuit, and the voltage stabilizing filter circuit includes a first voltage stabilizing diode D1, a thirteenth resistor R13, and a second capacitor C2; the anode of the first voltage-stabilizing diode D1 is grounded, the cathode of the first voltage-stabilizing diode D1 is connected with the power supply end VDD, and the thirteenth resistor R13 is connected between the output end of the rectifying circuit BR1 and the power supply end VDD; one end of the second capacitor C2 is connected to the power supply terminal VDD, and the other end is connected to the ground terminal GND.

By adopting the technical scheme, the thirteenth resistor R13 plays a role in providing voltage drop and reducing current, and is matched with the first voltage stabilizing diode D1, so that the first voltage stabilizing diode D1 keeps stable voltage in a larger current range after reverse breakdown, and the light emitting of the LED light emitting module is stable; the second capacitor C2 is a filter capacitor, noise waves and alternating current components of the power supply module are filtered by the filter capacitor, smooth pulse direct current is flattened, and electric energy is stored.

Optionally, the first light emitting diode group and/or the second light emitting diode group are/is an electrodeless two-color LED lamp.

By adopting the technical scheme, one lamp bead of the electrodeless double-color LED contains two colors of lamp beads, one color of the lamp beads emits light when the forward current is conducted, and the other color of the lamp beads emits light when the reverse current is conducted, so that the functions of flash, gradual lightening and dimming, full brightness, gradual color change and the like can be realized. Wherein, the flash-to-flash means that when one color is luminous, the other color is extinguished, and the cycle is continuous, so that the flash effect is realized.

In a second aspect, the LED lamp flash driving control method provided by the present application adopts the following technical scheme:

an LED lamp flash drive control method comprises the LED lamp flash drive control circuit; further comprising:

generating a light control signal, wherein the light control signal is output to the control circuit from a first signal output end A1 and a second signal output end B1 of the program control chip so as to control the light emitting state of the LED light emitting module;

the light control signal comprises at least one of a first color bubble flashing mode, a second color bubble flashing mode, a first color constant brightness mode and a second color constant brightness mode.

By adopting the technical scheme, the light control signal is output to the control circuit from the first signal output end A1 and the second signal output end B1, and the control circuit realizes the on-off state according to the light control signal, so that the light-emitting state of the LED light-emitting module is regulated and controlled.

Optionally, the method further includes: and generating a time control signal, wherein the time control signal is used for the duration of the light control signal and the sequence of the light control signal.

By adopting the technical scheme, the time control signal can integrate various light control signals, and the effect of automatically switching the light emitting state of the LED light emitting module is realized.

In summary, the present application includes at least one of the following beneficial technical effects:

the LED lamp has the advantages that 1, the LED light-emitting module can be in various light-emitting states and can be switched according to light control signals, the light color tone of the LED lamp can be various, and a user can adjust the color tone of the LED lamp according to the need of the user;

2. through the design of the push-pull circuit, the alternate conduction of the control circuit can be realized, and the execution of various light control signals is realized.

Drawings

Fig. 1 is a schematic block diagram of an LED flash driving control circuit according to an embodiment of the present disclosure.

Fig. 2 is a circuit diagram of an LED lamp flash driving control circuit according to an embodiment of the present application.

Fig. 3 is a flowchart of a method for controlling flash driving of an LED lamp according to an embodiment of the present application.

Description of reference numerals:

1. a power supply module;

2. a central processing module;

3. an LED light emitting module.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses LED lamp drives control circuit that dodges.

Referring to fig. 1 and 2, an LED lamp flashing driving control circuit includes a power supply module, a central processing module and an LED light emitting module, where the power supply module is configured to supply power to the central processing module, and the central processing module is configured to control a conduction state and a light emitting state of the LED light emitting module. The power supply module, the central processing module and the LED light emitting module are described in detail below.

The power supply module comprises a power supply circuit and a rectification circuit BR1, wherein the power supply circuit comprises a first power supply port N and a second power supply port L which are connected with alternating current, the first power supply port N is defined for outputting forward current, and the second power supply port L is defined for outputting reverse current; the first power supply port N and the second power supply port L are both connected to the rectifier circuit BR1, and both a forward current and a reverse current are output from an output end of the rectifier circuit BR 1.

Specifically, the rectifier circuit BR1 includes a first rectifier diode D1, a second rectifier diode D2, a third rectifier diode D3, a fourth rectifier diode D4, and a first capacitor C1; the cathode of the first rectifying diode D1 is connected with the cathode of the second rectifying diode D2, and the output end of the rectifying circuit BR1 is arranged between the cathode of the first rectifying diode D1 and the cathode of the second rectifying diode D2; the anode of the first rectifying diode D1 is connected with the cathode of the fourth rectifying diode D4, the anode of the third rectifying diode D3 is connected with the anode of the fourth rectifying diode D4, and the cathode of the third rectifying diode D3 is connected with the anode of the second rectifying diode D2; the first power supply port N is connected to the first rectifying diode D1, and the second power supply port L is connected to the anode of the second rectifying diode D2.

By the arrangement, forward current flows from the first power supply port N to the first rectifier diode D1 by utilizing the unidirectional conduction action of the diode, and then positive half-cycle current is output from the output end of the rectifier circuit BR 1; then, a reverse current flows from the second power supply port L to the second rectifier diode D2, and a negative half cycle current is output from the output end of the rectifier circuit BR 1; therefore, full-wave rectification of the rectification circuit BR1 is realized, and the reverse current can also guide the current output to the output end of the rectification circuit BR1 at the negative half cycle.

Furthermore, one end of the first capacitor C1 is connected to the cathode of the first rectifying diode D1, the other end of the first capacitor C1 is connected to the anode of the third rectifying diode D3, and the anode of the third rectifying diode D3 is grounded. With this arrangement, the first capacitor C1 filters the pulsating dc current to obtain a smooth dc high-voltage current.

The aforementioned central processing module includes a program control chip U1, a voltage stabilizing filter circuit and a control circuit, the program control chip U1 includes a power supply terminal VDD, a ground terminal GND, a mode selection terminal K0, a first signal output terminal a1 and a second signal output terminal B1, and the remaining pins are floating. The power supply terminal VDD is connected with the output terminal of the rectifying circuit BR1, and the mode selection terminal K0 is connected to the ground line through the switch button K1. The model of the program control chip U1 may be JB51552V4 or other IC chips capable of realizing programming.

The program control chip U1 has a control program preset therein, the control program includes a plurality of light control signals, the light control signals realize the light emitting state of the LED light emitting module by controlling the levels of the first signal output terminal a1 and the second signal output terminal B1, and the light control signals are switched by the switch button K1.

The voltage stabilizing filter circuit comprises a first voltage stabilizing diode D1, a thirteenth resistor R13 and a second capacitor C2; the anode of the first voltage-stabilizing diode D1 is grounded, the cathode of the first voltage-stabilizing diode D1 is connected with the power supply terminal VDD, and the thirteenth resistor R13 is connected between the output end of the rectifying circuit BR1 and the power supply terminal VDD to provide voltage drop; one end of the second capacitor C2 is connected to the power supply terminal VDD, and the other end is connected to the ground terminal GND. By the arrangement, the voltage stabilizing filter circuit can eliminate pulse interference or peak generated by the rectified direct-current voltage, so that the voltage or current curve of the direct current is smoother.

The control circuit comprises a first control unit and a second control unit, wherein the first control unit and the second control unit are symmetrical to each other to form a push-pull circuit.

Specifically, the first control unit includes a first NPN transistor Q1, a third NPN transistor Q3, and a sixth NPN transistor Q6. The first signal output end A1 is connected with the base electrode of a first NPN triode Q1 through a first resistor R1, the emitter electrode of the first NPN triode Q1 is connected with the base electrode of a third NPN triode Q3 through a third resistor R3, and the emitter electrode of the third NPN triode Q3 is connected with the ground wire; a collector of the first NPN triode Q1 is connected to a base of the sixth PNP triode Q6, an emitter of the sixth PNP triode Q6 is connected to an output end of the rectifier circuit BR1, a collector of the sixth PNP triode Q6 is provided with a reverse connection point LED-, and a collector of the third NPN triode Q3 is provided with a forward connection point LED +; a second resistor R2 is connected between the base of the first NPN triode Q1 and the ground, a third resistor R3 is connected between the emitter of the first NPN triode Q1 and the base of the third NPN triode Q3, a fourth resistor R4 is connected between the base of the third NPN triode Q3 and the ground, and a tenth resistor R10 is connected between the base and the emitter of the sixth PNP triode Q6.

Similarly, the second control unit includes a second NPN transistor Q2, a fourth NPN transistor Q4, and a fifth PNP transistor Q5; the second signal output end B1 is connected with the base of a second NPN triode Q2 through a fifth resistor R5, the emitter of the second NPN triode Q2 is connected with the base of a fourth NPN triode Q4 through a seventh resistor R7, and the emitter of the fourth NPN triode Q4 is connected to the ground; the collector of the second NPN triode Q2 is connected to the base of the fifth PNP triode Q5, the emitter of the fifth PNP triode Q5 is connected to the output of the rectifier circuit BR1, the collector of the fifth PNP triode Q5 is connected to the positive connection point LED +, and the collector of the fourth NPN triode Q4 is connected to the negative connection point LED-. A sixth resistor R6 is connected between the base electrode of the second NPN triode Q2 and the ground wire; an eighth resistor R8 is connected between the base of the fourth NPN triode Q4 and the ground wire; a ninth resistor R9 is connected between the base and the emitter of the fifth PNP transistor Q5.

The LED light emitting module includes a first LED group and a second LED group; the first light-emitting diode group or the second light-emitting diode group comprises one or at least two LED lamp beads, when the number of the LED lamp beads is two or more than two, the anode of each LED lamp bead is connected with the cathode of the next LED lamp bead, and therefore the LED lamp can be conducted in the forward direction to emit light when the direct current is passed through. The anode of the first light-emitting diode group is connected with the cathode of the second light-emitting diode group to form a positive connection point LED-; the anode of the second light emitting diode group is connected with the cathode of the first light emitting diode to form a reverse connection point LED +. When the first light emitting diode group and the first light emitting diode group are connected in series in the forward direction, the forward connection point LED + of the LED light emitting module is connected with the forward connection point LED + of the control circuit, and the reverse connection point LED-of the LED light emitting module is connected with the reverse connection point LED-of the control circuit.

Further, the first light emitting diode group and the second light emitting diode group may be general one-way conductive light emitting diodes, or may be electrodeless bicolor LED lamps. When the electrodeless double-color LED lamp is selected, the lamp beads with two colors are arranged in one lamp bead, one color is displayed when the lamp beads with the two colors are conducted with forward current, and the other color is displayed when the lamp beads with the two colors are conducted with reverse current. Therefore, the connection mode of the anode and the cathode between the first light emitting diode group and the second light emitting diode group can be selected according to the actual situation requirement, so that the LED light emitting module can emit light with different colors, and multiple lighting effects are realized.

The implementation principle of the LED lamp flashing drive control circuit in the embodiment of the application is as follows: the alternating current passes through the power supply module and then is subjected to full-wave rectification and voltage stabilization to form direct current; the direct current regulates and controls the high and low levels of the first signal output end A1 and the second signal output end B1 under the control of a program control module of the central processing module, and when the first NPN triode Q1, the third NPN triode Q3 and the sixth PNP triode Q6 are conducted, the second NPN triode Q2, the fourth NPN triode Q4 and the fifth PNP triode Q5 are cut off; on the contrary, when the second NPN transistor Q2, the fourth NPN transistor Q4, and the fifth PNP transistor Q5 are turned on, the first NPN transistor Q1, the third NPN transistor Q3, and the sixth PNP transistor Q6 are turned off, thereby controlling the light emitting state of the LED light emitting module.

The embodiment of the application also discloses an LED lamp flashing drive control method.

Referring to fig. 2 and 3, an LED flash driving control method is applied to an LED flash driving control circuit, which generates a light control signal and a time control signal.

The light control signal is input into the first signal output end a1 and the second signal output end B1 from the program control chip U1 to control the light emitting state of the LED light emitting module; specifically, the light control signal may include a first color bubble flashing mode, a second color bubble flashing mode, a first color normally-on mode, and a second color normally-on mode.

When the switch button K1 is pressed, the mode is switched to the first color bubble flash mode, at this time, the first signal output terminal a1 outputs 90% high level PWM, the second signal output terminal B1 outputs low level, at this time, the first NPN transistor Q1, the third NPN transistor Q3 and the sixth PNP transistor Q6 are turned on, and the second NPN transistor Q2, the fourth NPN transistor Q4 and the fifth PNP transistor Q5 are turned off. At this time, the high-voltage current flows through the sixth PNP triode Q6 to flow to the reverse connection point LED-, and then flows through the LED light-emitting module to flow to the forward connection point LED +, so that the flickering light-emitting state of one color of the LED lamp is realized.

When the switch button K1 is pressed again, the mode is switched to the second color bubble flash mode, at this time, the first signal output end a1 outputs a low level, the second signal output end B1 outputs 90% high level PWM, at this time, the second NPN transistor Q2, the fourth NPN transistor Q4, and the fifth PNP transistor Q5 are turned on, and the first NPN transistor Q1, the third NPN transistor Q3, and the sixth PNP transistor Q6 are turned off. At this time, the high-voltage current flows to the positive connection point LED + through the fifth PNP triode Q5, and then flows to the reverse connection point LED-through the LED light-emitting module, so that the flickering light-emitting state of the LED lamp with another color is realized.

When the third switch button K1 is pressed, the mode is switched to the first color normally-on mode. At this time, the first signal output terminal a1 outputs a high level, the second signal output terminal B1 outputs a low level, the first NPN transistor Q1, the third NPN transistor Q3, and the sixth PNP transistor Q6 are turned on, and the second NPN transistor Q2, the fourth NPN transistor Q4, and the fifth PNP transistor Q5 are turned off. At this time, the high-voltage current flows through the sixth PNP triode Q6 to flow to the reverse connection point LED-, and then flows to the positive connection point LED + through the LED light-emitting module, so that the normally bright light-emitting state of one color of the LED lamp is realized.

When the fourth switch button K1 is pressed, the mode is switched to the second color normally-on mode. At this time, the first signal output terminal a1 outputs a low level, the second signal output terminal B1 outputs a high level, the first NPN transistor Q1, the third NPN transistor Q3, and the sixth PNP transistor Q6 are turned off, and the second NPN transistor Q2, the fourth NPN transistor Q4, and the fifth PNP transistor Q5 are turned on. At this time, the high-voltage current flows to the positive connection point LED + through the fifth PNP triode Q5, and then flows to the reverse connection point LED-through the LED light-emitting module, so that the normally-on light-emitting state of the other color of the LED lamp is realized.

The switch button is pressed in a reciprocating way, the light control signal is switched along with the switch button, and the change of the light emitting states of the LED light emitting modules is realized.

The time control signal can control the duration of the light control signal and the sequence of the light control signal. Specifically, at least two kinds of light control signals may be combined to form a combined light control signal, and when the switch button K1 is pressed, the combined light control signal outputs any one of high level, low level, and 90% high level PWM to the first signal output terminal a1, and outputs any one of high level, low level, and 90% high level PWM to the second signal output terminal B1, thereby implementing alternate change of the light emitting state of the LED light emitting module.

The 90% high level PWM can also be high level PWM such as 10% -50%, 50% -90% and the like.

The implementation principle of the LED lamp flashing drive control method in the embodiment of the application is as follows: the central processing chip is internally preset with a control program, the control program comprises a plurality of light control signals, the light control signals realize the light emitting state of the LED light emitting module by controlling the levels of the first signal output end A1 and the second signal output end B1, and the light control signals are switched by the switch button K1 to realize the change of the light emitting state of the plurality of LED light emitting modules.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.