Single-switch multi-lamp control circuit

Abstract

The utility model discloses a single-switch multi-lamp control circuit, which relates to the technical field of multi-lamp control, and comprises a power supply module for supplying power; the single switch module is used for short pressing and long pressing; the LED switching control module is used for sequentially controlling the independent lighting work of the first lighting module, the second lighting module and the third lighting module according to the key switch state; the mode switching module is used for controlling the LED switching control module to sequentially control the first illumination module, the second illumination module and the third illumination module to perform common illumination work when the long pressing time of the single switch module exceeds the set timing time; and the constant current driving module is used for providing constant current and stable voltage for the first lighting module, the second lighting module and the third lighting module. According to the single-switch multi-lamp control circuit, the first lighting module, the second lighting module and the third lighting module can be sequentially controlled through the single switch to carry out independent lighting and common lighting work, and the control function and the control intelligence degree of the single switch are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-lamp control, in particular to a single-switch multi-lamp control circuit. Background Art

[0002] Existing lighting control circuits are mostly in the form of one lamp per switch control, multiple lamps per switch control, or single lamp multiple switches control. A single switch can only control the lighting of one lamp or the lighting of multiple lamps together. It cannot simultaneously meet the needs of both the joint control of multiple lamps and the individual control of a group of lamps. The control method of a single switch on multiple lamps is relatively simple, and the intelligence level of the multi-lamp control circuit is low, so it needs to be improved. Utility Model Content

[0003] The embodiments of the present invention provide a single-switch multi-lamp control circuit to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A single-switch multi-lamp control circuit, comprising: a power supply module, a single switch module, an LED switching control module, a mode switching module, a constant current drive module, a first lighting module, a second lighting module and a third lighting module;

[0006] A power module is used to receive AC power, perform voltage reduction, rectification, filtering and voltage stabilization on the AC power, and output first power;

[0007] a single switch module, connected to the power module, configured to receive the first electrical energy and output a first control signal when the key switch is pressed;

[0008] an LED switching control module, connected to the power module, the single switch module, the mode switching module, the first lighting module, and the second lighting module, configured to receive the first electrical energy and output a first level signal upon receiving the first control signal for the first time, output a second level signal upon receiving the first control signal for the second time, output a third level signal upon receiving the first control signal for the third time, output a reset signal and perform a reset operation upon receiving the first control signal for the fourth time, transmit the second level signal to the first lighting module upon receiving the second control signal output by the mode switching module, and transmit the third level signal to the first lighting module and the second lighting module;

[0009] a mode switching module connected to the single switch module and the power supply module, configured to receive the first electric energy and set a timing time, self-lock and continuously output the second control signal when the duration of continuously receiving the first control signal exceeds the timing time, and stop the self-locking operation when receiving a reset signal;

[0010] a constant current driving module connected to the power supply module, the first lighting module, the second lighting module, and the third lighting module, configured to sample currents of the first lighting module, the second lighting module, and the third lighting module, and perform constant current and voltage regulation on the first electric energy according to the sampled current signals to output second electric energy;

[0011] a first lighting module, configured to receive the second electrical energy and perform lighting upon receiving the first level signal, the second level signal, or the third level signal;

[0012] a second lighting module, configured to receive the second electrical energy and perform lighting upon receiving the second level signal or the third level signal;

[0013] The third lighting module is connected to the LED switching control module and is used to receive the second electric energy and perform lighting when receiving a third level signal.

[0014] As a further solution of the present invention: the power module includes a power interface, a first transformer, a first rectifier, a first capacitor and a first diode; the single switch module includes a first resistor, a second resistor, a first key switch and a second capacitor;

[0015] Preferably, the first end and the second end of the power interface are respectively connected to the first end and the second end of the primary side of the first transformer, the first end and the second end of the secondary side of the first transformer are respectively connected to the first end and the second end of the first rectifier, the third end of the first rectifier is connected to one end of the first capacitor, one end of the second capacitor and the cathode of the first diode and is connected to the first end of the first push switch through the first resistor, the second end of the first push switch is connected to the other end of the second capacitor and the LED switching control module and is connected to the anode of the first diode, the other end of the first capacitor, the fourth end of the first rectifier and the ground through the second resistor.

[0016] As a further solution of the present invention: the LED switching control module includes a first counter, a first thyristor and a second thyristor;

[0017] Preferably, the fourteenth end of the first counter is connected to the second end of the first push switch, the sixteenth end of the first counter is connected to the cathode of the first diode, the third end of the first counter is connected to the cathode of the first thyristor and the first lighting module, the second end of the first counter is connected to the cathode of the second thyristor, the anode of the first thyristor and the second lighting module, the fourth end of the first counter is connected to the anode of the second thyristor and the third lighting module, the seventh end of the first counter is connected to the fifteenth end of the first counter and the mode switching module, the thirteenth end and the eighth end of the first counter are both grounded, and the control end of the first thyristor is connected to the control end of the second thyristor and the mode switching module.

[0018] As a further solution of the present invention: the constant current driving module includes a third resistor, a third capacitor, a first driver, a first inductor, a fourth capacitor, a second diode and a fourth resistor;

[0019] Preferably, one end of the third resistor is connected to the cathode of the first diode and connected to the anode of the second diode and the SW end of the first driver through the first inductor, the other end of the third resistor is connected to the IN end and EN end of the first driver and is grounded through the third capacitor, the GND end of the first driver, one end of the fourth capacitor and the first end of the fourth resistor are all grounded, the FB end of the first driver is connected to the first end of the fourth resistor, the first lighting module, the second lighting module and the third lighting module, and the cathode of the second diode is connected to the OV end of the first driver and the other end of the fourth capacitor.

[0020] As a further solution of the present invention: the first lighting module includes a first LED lamp and a first power tube; the second lighting module includes a second LED lamp and a second power tube; the third lighting module includes a third LED lamp and a third power tube;

[0021] Preferably, the first end of the first LED lamp is connected to the first end of the second LED lamp, the first end of the third LED lamp and the cathode of the second diode, the second end of the first LED lamp is connected to the drain of the first power tube, the second end of the second LED lamp is connected to the drain of the second power tube, the second end of the third LED lamp is connected to the drain of the third power tube, the source of the first power tube is connected to the source of the second power tube, the source of the third power tube and the second end of the fourth resistor, and the gate of the first power tube, the gate of the second power tube and the gate of the third power tube are respectively connected to the third end, the second end and the fourth end of the first counter.

[0022] As a further solution of the present invention: the mode switching module includes a fifth capacitor, a third diode, a fifth resistor, a first timer, a sixth capacitor, a first logic chip, a fourth diode, a first switch tube and a sixth resistor;

[0023] Preferably, the fourth end and the eighth end of the first timer are both connected to the second end of the first push switch and connected to one end of the fifth resistor, the cathode of the third diode, the second end and the sixth end of the first timer through the fifth capacitor, the third end of the first timer is connected to the A end of the first logic chip and the cathode of the fourth diode, the B end of the first logic chip is connected to the collector of the first switch tube and connected to the cathode of the first diode through the sixth resistor, the F end of the first logic chip is connected to the anode of the fourth diode, the control end of the first thyristor and the control end of the second thyristor, the emitter of the first switch tube, the first end of the first timer, the other end of the fifth resistor and the anode of the third diode are all grounded, the fifth end of the first timer is grounded through the sixth capacitor, and the base of the first switch tube is connected to the seventh end of the first counter.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: the single-switch multi-lamp control circuit of the present invention controls the LED switching control module by a short press of the single switch module to control the individual lighting operations of the first lighting module, the second lighting module and the third lighting module in turn; when the single switch module is long pressed, and the long press time exceeds the timing time set by the mode switching module, the mode switching module will control the LED switching control module to control the first lighting module, the second lighting module and the third lighting module in turn to perform common lighting operations, and the single switch module can control the LED switching control module to perform reset operations, and then control the reset operations of the mode switching module, that is, re-performing lighting control and re-performing individual lighting operations, effectively improving the control function and control intelligence of the single switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 The present invention provides a schematic block diagram of a single-switch multi-lamp control circuit.

[0027] Figure 2 This is a circuit diagram of a single-switch multi-lamp control circuit provided by an example of the utility model.

[0028] Figure 3 This is a connection circuit diagram of the mode switching module provided by an example of the utility model. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In one embodiment, see Figure 1 , a single switch multi-lamp control circuit, comprising: a power supply module 1, a single switch module 2, an LED switching control module 3, a mode switching module 4, a constant current drive module 5, a first lighting module 6, a second lighting module 7 and a third lighting module 8;

[0031] Specifically, the power module 1 is used to receive AC power, perform voltage reduction, rectification, filtering and voltage stabilization on the AC power and output the first power;

[0032] a single switch module 2, connected to the power module 1, configured to receive the first electrical energy and output a first control signal when the key switch is pressed;

[0033] The LED switching control module 3 is connected to the power module 1, the single switch module 2, the mode switching module 4, the first lighting module 6 and the second lighting module 7, and is configured to receive the first electric energy and output a first level signal when receiving the first control signal for the first time, output a second level signal when receiving the first control signal for the second time, output a third level signal when receiving the first control signal for the third time, output a reset signal and perform a reset operation when receiving the first control signal for the fourth time, and transmit the second level signal to the first lighting module 6 and the third level signal to the first lighting module 6 and the second lighting module 7 when receiving the second control signal output by the mode switching module 4;

[0034] The mode switching module 4 is connected to the single switch module 2 and the power supply module 1, and is used to receive the first electric energy and set the timing time. When the duration of the continuous reception of the first control signal exceeds the timing time, the mode switching module 4 performs self-locking and continuously outputs the second control signal. When the reset signal is received, the mode switching module 4 stops the self-locking operation.

[0035] a constant current driving module 5 connected to the power supply module 1, the first lighting module 6, the second lighting module 7, and the third lighting module 8, for sampling the current of the first lighting module 6, the second lighting module 7, and the third lighting module 8, and performing constant current and voltage regulation on the first electric energy according to the sampled current signal to output the second electric energy;

[0036] The first lighting module 6 is configured to receive the second electrical energy and perform lighting upon receiving the first level signal, the second level signal, or the third level signal;

[0037] The second lighting module 7 is configured to receive the second electrical energy and perform lighting when receiving the second level signal or the third level signal;

[0038] The third lighting module 8 is connected to the LED switching control module 3 and is used to receive the second electric energy and perform lighting when receiving the third level signal.

[0039] In a specific embodiment, the power supply module 1 can adopt a power supply circuit composed of a power interface, a transformer, a rectifier, a capacitor and a diode, etc., which can be connected to AC power and perform voltage reduction, rectification, filtering and voltage stabilization on the AC power; the single switch module 2 can adopt a single switch circuit composed of a key switch, a resistor and a capacitor, and can perform mode switching control by long pressing or short pressing; the LED switching control module 3 can adopt an LED switching control circuit composed of a counter and a thyristor, and realize the separate lighting control of the first lighting module 6, the second lighting module 7 and the third lighting module 8 in turn according to the number of control signals output by the single switch module 2, or the mode switching module 4 can realize the common lighting control of the first lighting module 6, the second lighting module 7 and the third lighting module 8 in turn; the mode switching module 4 can adopt a mode switching circuit composed of a timer, a capacitor, a diode, a logic chip, etc., can set a timing time, and after the single switch module 2 is long pressed for longer than the timing time, the signal will be self-locked and a high-level state signal will be output. After receiving the reset signal output by the LED switching control module 3, the self-locking operation will be stopped; the above-mentioned constant current drive module 5 can adopt a constant current drive circuit composed of a constant current driver, an inductor, a diode, etc., can sample the current of the first lighting module 6, the second lighting module 7 and the third lighting module 8, and perform constant current and voltage regulation on the input electric energy according to the sampled signal; the above-mentioned first lighting module 6, the second lighting module 7 and the third lighting module 8 can respectively adopt a first lighting circuit, a second lighting circuit and a third lighting circuit composed of a field effect transistor and an LED lamp to perform lighting work.

[0040] In another embodiment, see Figure 1 、 Figure 2 and Figure 3 The power module 1 includes a power interface, a first transformer W1, a first rectifier T1, a first capacitor C1 and a first diode D1; the single switch module 2 includes a first resistor R1, a second resistor R2, a first key switch K1 and a second capacitor C2;

[0041] Specifically, the first end and the second end of the power interface are respectively connected to the first end and the second end of the primary side of the first transformer W1, the first end and the second end of the secondary side of the first transformer W1 are respectively connected to the first end and the second end of the first rectifier T1, the third end of the first rectifier T1 is connected to one end of the first capacitor C1, one end of the second capacitor C2 and the cathode of the first diode D1, and is connected to the first end of the first push switch K1 through the first resistor R1, the second end of the first push switch K1 is connected to the other end of the second capacitor C2 and the LED switching control module 3, and is connected to the anode of the first diode D1, the other end of the first capacitor C1, the fourth end of the first rectifier T1 and the ground through the second resistor R2.

[0042] In a specific embodiment, the first rectifier T1 may be a full-wave rectifier; the first diode D1 performs voltage stabilization.

[0043] Furthermore, the LED switching control module 3 includes a first counter IC1, a first thyristor S1 and a second thyristor S2;

[0044] Specifically, the fourteenth end of the first counter IC1 is connected to the second end of the first push switch K1, the sixteenth end of the first counter IC1 is connected to the cathode of the first diode D1, the third end of the first counter IC1 is connected to the cathode of the first thyristor S1 and the first lighting module 6, the second end of the first counter IC1 is connected to the cathode of the second thyristor S2, the anode of the first thyristor S1 and the second lighting module 7, the fourth end of the first counter IC1 is connected to the anode of the second thyristor S2 and the third lighting module 8, the seventh end of the first counter IC1 is connected to the fifteenth end of the first counter IC1 and the mode switching module 4, the thirteenth end and the eighth end of the first counter IC1 are both grounded, and the control end of the first thyristor S1 is connected to the control end of the second thyristor S2 and the mode switching module 4.

[0045] In a specific embodiment, the first counter IC1 may be a CD4017 counter; the first thyristor S1 and the second thyristor S2 may be unidirectional thyristors.

[0046] Furthermore, the constant current driving module 5 includes a third resistor R3, a third capacitor C3, a first driver IC2, a first inductor L1, a fourth capacitor C4, a second diode D2 and a fourth resistor R4;

[0047] Specifically, one end of the third resistor R3 is connected to the cathode of the first diode D1 and connected to the anode of the second diode D2 and the SW end of the first driver IC2 through the first inductor L1. The other end of the third resistor R3 is connected to the IN end and EN end of the first driver IC2 and is grounded through the third capacitor C3. The GND end of the first driver IC2, one end of the fourth capacitor C4 and the first end of the fourth resistor R4 are all grounded. The FB end of the first driver IC2 is connected to the first end of the fourth resistor R4, the first lighting module 6, the second lighting module 7 and the third lighting module 8. The cathode of the second diode D2 is connected to the OV end of the first driver IC2 and the other end of the fourth capacitor C4.

[0048] In a specific embodiment, the first driver IC2 may be a CXLE86185 chip; the fourth resistor R4 is used as a current sampling resistor.

[0049] Furthermore, the first lighting module 6 includes a first LED lamp and a first power tube Q1; the second lighting module 7 includes a second LED lamp and a second power tube Q2; the third lighting module 8 includes a third LED lamp and a third power tube Q3;

[0050] Specifically, the first end of the first LED lamp is connected to the first end of the second LED lamp, the first end of the third LED lamp and the cathode of the second diode D2, the second end of the first LED lamp is connected to the drain of the first power tube Q1, the second end of the second LED lamp is connected to the drain of the second power tube Q2, the second end of the third LED lamp is connected to the drain of the third power tube Q3, the source of the first power tube Q1 is connected to the source of the second power tube Q2, the source of the third power tube Q3 and the second end of the fourth resistor R4, and the gate of the first power tube Q1, the gate of the second power tube Q2 and the gate of the third power tube Q3 are respectively connected to the third end, the second end and the fourth end of the first counter IC1.

[0051] In a specific embodiment, the first power tube Q1 , the second power tube Q2 and the third power tube Q3 can all be N-channel field effect tubes.

[0052] Furthermore, the mode switching module 4 includes a fifth capacitor C5, a third diode D3, a fifth resistor R5, a first timer IC3, a sixth capacitor C6, a first logic chip J1, a fourth diode D4, a first switch tube V1 and a sixth resistor R6;

[0053] Specifically, the fourth and eighth terminals of the first timer IC3 are both connected to the second terminal of the first push switch K1 and are connected to one terminal of the fifth resistor R5, the cathode of the third diode D3, the second and sixth terminals of the first timer IC3 through the fifth capacitor C5. The third terminal of the first timer IC3 is connected to the A terminal of the first logic chip J1 and the cathode of the fourth diode D4. The B terminal of the first logic chip J1 is connected to the collector of the first switching tube V1 and is connected to the cathode of the first diode D1 through the sixth resistor R6. The F terminal of the first logic chip J1 is connected to the anode of the fourth diode D4, the control terminal of the first thyristor S1, and the control terminal of the second thyristor S2. The emitter of the first switching tube V1, the first terminal of the first timer IC3, the other terminal of the fifth resistor R5, and the anode of the third diode D3 are all grounded. The fifth terminal of the first timer IC3 is grounded through the sixth capacitor C6. The base of the first switching tube V1 is connected to the seventh terminal of the first counter IC1.

[0054] In a specific embodiment, the above-mentioned first timer IC3 can use an NE555 integrated chip, cooperate with the fifth capacitor C5, the third diode D3, the fifth resistor R5 and the sixth capacitor C6 to perform timing work, set the timing time, and output a low-level signal after power is supplied, and output a high-level signal after the power-on time exceeds the timing time; the above-mentioned first logic chip J1 can use an AND gate chip, cooperate with the sixth resistor R6 and the fourth diode D4 to perform high-level self-locking control, and the first switch tube V1 can use an NPN transistor to perform reset control.

[0055] In a single-switch multi-lamp control circuit of this embodiment, AC power is connected to a power interface, and the first transformer W1, the first rectifier T1, the first capacitor C1, and the first diode D1 perform voltage reduction, rectification, filtering, and voltage stabilization on the AC power. When the first push switch K1 is pressed for the first time, the fourteenth terminal of the first counter IC1 becomes a high level, the third terminal of the first counter IC1 outputs a high level and controls the first power tube Q1 to turn on, and the first driver IC2 cooperates with the third resistor R3, the third capacitor C3, the first inductor L1, the fourth resistor R4, and the second diode D2 to perform constant current and voltage regulation on the stabilized power to power the first LED lamp, which then illuminates. After the first push switch K1 is pressed for the second time, the first counter IC1 switches to its second terminal to output a high level, the second power tube Q2 turns on, and the second LED lamp illuminates. Similarly, when the first push switch K1 is pressed for the third time, the first counter IC1 controls the third LED lamp to illuminate. After the first push switch K1 is pressed for the fourth time, the seventh terminal of the first counter IC1 becomes the first The fifteenth terminal of the counter IC1 provides a high level, resetting the first counter IC1, stopping its high-level signal output and resuming operation. When the first push switch K1 is long-pressed for a period exceeding the timer set by the fifth capacitor C5, the fifth resistor R5, and the third diode D3, the third terminal of the first timer IC3 outputs a high-level signal. At this time, the B terminal of the first logic chip J1 is in a high-level state, and the fourth diode D4 self-locks, continuously controlling the first thyristor S1 and the second thyristor S2 to conduct. Therefore, when the first push switch K1 is pressed a second time, the second terminal of the first counter IC1 simultaneously controls the conduction of the second power transistor Q2 and the first power transistor Q1, causing the first LED lamp and the second LED lamp to illuminate simultaneously. When the push switch K1 is pressed a third time, the first, second, and third LED lamps illuminate simultaneously. After the fourth press, the first counter IC1 resets and stops illuminating. The first switch V1 turns on, controlling the reset of the first logic chip J1 and the fourth diode D4, and the first, second, and third LED lamps cease to illuminate together.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0057] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A single switch multi-lamp control circuit, characterized in that: The single-switch multi-lamp control circuit includes: a power supply module, a single switch module, an LED switching control module, a mode switching module, a constant current drive module, a first lighting module, a second lighting module and a third lighting module; The power module is used to receive AC power, perform voltage reduction, rectification, filtering and voltage stabilization on the AC power, and output the first power; The single switch module is connected to the power module and is used to receive the first electric energy and output a first control signal when the key switch is pressed; The LED switching control module is connected to the power module, the single switch module, the mode switching module, the first lighting module, and the second lighting module, and is configured to receive the first electric energy and output a first level signal when receiving the first control signal for the first time, output a second level signal when receiving the first control signal for the second time, output a third level signal when receiving the first control signal for the third time, output a reset signal and perform a reset operation when receiving the first control signal for the fourth time, transmit the second level signal to the first lighting module, and transmit the third level signal to the first lighting module and the second lighting module when receiving the second control signal output by the mode switching module; The mode switching module is connected to the single switch module and the power supply module, and is used to receive the first electric energy and set the timing time. When the duration of continuously receiving the first control signal exceeds the timing time, the mode switching module performs self-locking and continuously outputs the second control signal. When receiving the reset signal, the mode switching module stops the self-locking operation. The constant current driving module is connected to the power supply module, the first lighting module, the second lighting module and the third lighting module, and is used to sample the current of the first lighting module, the second lighting module and the third lighting module, and perform constant current and voltage regulation on the first electric energy according to the sampled current signal to output the second electric energy; The first lighting module is configured to receive the second electrical energy and perform lighting upon receiving the first level signal, the second level signal, or the third level signal; The second lighting module is configured to receive the second electrical energy and perform lighting upon receiving the second level signal or the third level signal; The third lighting module is connected to the LED switching control module, and is used to receive the second electric energy and perform lighting when receiving a third level signal.

2. A single-switch multi-lamp control circuit according to claim 1, characterized in that: The power module includes a power interface, a first transformer, a first rectifier, a first capacitor and a first diode; the single switch module includes a first resistor, a second resistor, a first key switch and a second capacitor; The first end and the second end of the power interface are respectively connected to the first end and the second end of the primary side of the first transformer, the first end and the second end of the secondary side of the first transformer are respectively connected to the first end and the second end of the first rectifier, the third end of the first rectifier is connected to one end of the first capacitor, one end of the second capacitor and the cathode of the first diode, and is connected to the first end of the first push switch through the first resistor, the second end of the first push switch is connected to the other end of the second capacitor and the LED switching control module, and is connected to the anode of the first diode, the other end of the first capacitor, the fourth end of the first rectifier and the ground through the second resistor.

3. The single-switch multi-lamp control circuit according to claim 2, characterized in that: The LED switching control module includes a first counter, a first thyristor and a second thyristor; The fourteenth end of the first counter is connected to the second end of the first push switch, the sixteenth end of the first counter is connected to the cathode of the first diode, the third end of the first counter is connected to the cathode of the first thyristor and the first lighting module, the second end of the first counter is connected to the cathode of the second thyristor, the anode of the first thyristor and the second lighting module, the fourth end of the first counter is connected to the anode of the second thyristor and the third lighting module, the seventh end of the first counter is connected to the fifteenth end of the first counter and the mode switching module, the thirteenth end and the eighth end of the first counter are both grounded, and the control end of the first thyristor is connected to the control end of the second thyristor and the mode switching module.

4. A single-switch multi-lamp control circuit according to claim 3, characterized in that: The constant current driving module includes a third resistor, a third capacitor, a first driver, a first inductor, a fourth capacitor, a second diode and a fourth resistor; One end of the third resistor is connected to the cathode of the first diode and connected to the anode of the second diode and the SW end of the first driver through the first inductor, the other end of the third resistor is connected to the IN end and the EN end of the first driver and is grounded through the third capacitor, the GND end of the first driver, one end of the fourth capacitor and the first end of the fourth resistor are all grounded, the FB end of the first driver is connected to the first end of the fourth resistor, the first lighting module, the second lighting module and the third lighting module, the cathode of the second diode is connected to the OV end of the first driver and the other end of the fourth capacitor.

5. The single-switch multi-lamp control circuit according to claim 4, characterized in that: The first lighting module includes a first LED lamp and a first power tube; the second lighting module includes a second LED lamp and a second power tube; the third lighting module includes a third LED lamp and a third power tube; The first end of the first LED lamp is connected to the first end of the second LED lamp, the first end of the third LED lamp and the cathode of the second diode, the second end of the first LED lamp is connected to the drain of the first power tube, the second end of the second LED lamp is connected to the drain of the second power tube, the second end of the third LED lamp is connected to the drain of the third power tube, the source of the first power tube is connected to the source of the second power tube, the source of the third power tube and the second end of the fourth resistor, and the gate of the first power tube, the gate of the second power tube and the gate of the third power tube are respectively connected to the third end, the second end and the fourth end of the first counter.

6. The single-switch multi-lamp control circuit according to claim 3, characterized in that: The mode switching module includes a fifth capacitor, a third diode, a fifth resistor, a first timer, a sixth capacitor, a first logic chip, a fourth diode, a first switch tube and a sixth resistor; The fourth end and the eighth end of the first timer are both connected to the second end of the first push switch and connected to one end of the fifth resistor, the cathode of the third diode, the second end and the sixth end of the first timer through the fifth capacitor. The third end of the first timer is connected to the A end of the first logic chip and the cathode of the fourth diode. The B end of the first logic chip is connected to the collector of the first switching tube and the cathode of the first diode through the sixth resistor. The F end of the first logic chip is connected to the anode of the fourth diode, the control end of the first thyristor and the control end of the second thyristor. The emitter of the first switching tube, the first end of the first timer, the other end of the fifth resistor and the anode of the third diode are all grounded. The fifth end of the first timer is grounded through the sixth capacitor. The base of the first switching tube is connected to the seventh end of the first counter.

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