LED lamp driving power supply control circuit

Abstract

The utility model relates to LED control technical field especially a kind of LED lamp driving power control circuit, including LED power circuit and control circuit, the LED power circuit includes: general switch, fuse, RC circuit one, RC circuit two, full-bridge rectifier module and thermistor, the control circuit includes: human body proximity sensor, time relay, contactor, control switch and triode, the utility model can realize infinite time lighting and human body response delay lighting, effectively reduce energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of LED control technology, specifically to an LED lamp driver power supply control circuit. Background Technology

[0002] Lighting ranks second only to industrial energy consumption in terms of overall energy consumption. LED lights are widely used in public places with high foot traffic, such as office buildings, apartments, shopping malls, and public restrooms. Currently, lighting control in public places faces the following problems: First, in low ambient light, LED lights often need to remain on until dawn to prevent accidents, resulting in significant energy waste. Second, prolonged operation of LED lights not only increases energy consumption but also accelerates the aging of LED light sources, significantly shortening their lifespan. Third, existing lighting control systems lack sufficient intelligence, failing to automatically adjust based on actual pedestrian traffic and lacking effective energy-saving control methods. Furthermore, traditional control circuits lack overheat protection, easily causing safety hazards under abnormal conditions, and the large voltage fluctuations after rectification affect the stable operation of LED lights. Existing manual control methods also cannot meet the needs of intelligent management in public places, necessitating an intelligent energy-saving control solution that can automatically sense pedestrian activity, has a delayed shutdown function, and incorporates safety protection mechanisms. Existing technologies urgently need improvement to address these issues. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an LED lamp driver power supply control circuit.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an LED lamp driver power supply control circuit, comprising an LED power supply circuit and a control circuit.

[0005] The LED power supply circuit includes: a main switch (1), a fuse (10), RC circuit one, RC circuit two, a full-bridge rectifier module (4), and a thermistor (11);

[0006] One end of the main switch (1) is connected to the external mains power line, and the other end is connected in series with the fuse (10) and then connected to the input terminal of the RC circuit.

[0007] The RC circuit includes a step-down capacitor C1 and a discharge resistor R1: one end of the step-down capacitor C1 is connected to the output terminal of the fuse (10), and the other end is connected in series with the resistor R1 and then connected to the positive terminal of the AC input terminal of the full-bridge rectifier module (4); the negative terminal of the AC input terminal of the full-bridge rectifier module (4) is connected to the external mains neutral line; the RC circuit is used to step down the 220V mains voltage and perform preliminary filtering.

[0008] The second RC circuit includes an electrolytic capacitor C2 and a bleed resistor R2: the positive DC output terminal of the full-bridge rectifier module (4) is connected in series with the thermistor (11) and then connected to the positive terminal of the electrolytic capacitor C2. The negative terminal of the electrolytic capacitor C2 is connected to the negative DC output terminal of the full-bridge rectifier module (4) (the negative DC output terminal is grounded). The second RC circuit is used to filter out the harmonics after full-bridge rectification to obtain a stable DC voltage. The thermistor (11) is used for overheat protection. When the circuit temperature rises abnormally, the resistance is increased to reduce the output voltage.

[0009] The control circuit includes: a human proximity sensor (5), a time relay (6), a contactor (7), a control switch (8), and a transistor (9);

[0010] The power supply terminal of the human proximity sensor (5) is connected to the DC positive output terminal of the full-bridge rectifier module (4), the ground terminal is grounded, and the output terminal is connected to the base of the transistor (9); the human proximity sensor (5) is used to detect people within a set range and output a switch signal;

[0011] The collector of the transistor (9) is connected to the positive DC output terminal of the full-bridge rectifier module (4), and the emitter is connected to the trigger terminal of the time relay (6); the transistor (9) is used to amplify the signal of the human proximity sensor and trigger the time relay to reset.

[0012] The time relay (6) adopts a power-off delay mode: one end of its coil is connected to the DC positive output terminal of the full-bridge rectifier module (4), and the other end is connected to one end of its normally closed contact; the other end of the normally closed contact is grounded; the time relay (6) is used to start the delay after the human body sensing signal disappears, and disconnect the contactor power supply after the delay ends.

[0013] One end of the coil of the contactor (7) is connected to the positive DC output terminal of the full-bridge rectifier module (4), and the other end is connected to the other end of the normally closed contact of the time relay (6); one end of its normally open contact is connected to the positive DC output terminal of the full-bridge rectifier module (4), and the other end is connected to the power supply terminal of the LED lamp (the power supply terminal of the LED lamp is grounded); the contactor (7) is used to control the power supply of the LED lamp.

[0014] One end of the control switch (8) is connected to the DC positive output terminal of the full-bridge rectifier module (4), and the other end is connected to the other end of the normally closed contact of the time relay (6); the control switch (8) is a push-button normally open switch, used to manually force the LED lamp to illuminate for a long time.

[0015] In some embodiments, the voltage-degrading capacitor C1 of the RC circuit has a withstand voltage of ≥400V and a capacitance of 0.1~10μF; the discharge resistor R1 has a resistance of 1MΩ~10MΩ and is used to release the residual charge of the voltage-degrading capacitor after power is cut off.

[0016] In some embodiments, the electrolytic capacitor C2 of the second RC circuit has a capacitance of 100 to 10000 μF and a withstand voltage of ≥25V; the bleeder resistor R2 has a resistance of 1kΩ to 10kΩ and is used to release the residual charge of the electrolytic capacitor after power is cut off.

[0017] In some embodiments, the thermistor (11) is a positive temperature coefficient (PTC) thermistor, the resistance of which increases with increasing temperature, and the operating temperature is 60 to 100°C.

[0018] In some embodiments, the human proximity sensor (5) is an infrared sensor or a microwave sensor, with a detection distance of 0 to 5 m and an output signal at TTL level.

[0019] In some embodiments, the delay range of the time relay (6) is 10s to 30min, and the delay time can be changed by adjusting the internal potentiometer.

[0020] Compared with the prior art, the beneficial effects of this utility model are: by automatically detecting human activity through a human proximity sensor and triggering delayed lighting, combined with a thermistor to achieve overheat protection, and using an RC filter circuit to stabilize voltage output, it solves the problems of energy waste, shortened lifespan and safety hazards caused by continuous operation of LED lights in public places. It has the advantages of reducing energy consumption, extending LED lifespan, improving safety and voltage stability.

[0021] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. The embodiments of this application will provide a detailed description and understanding of the application. Attached Figure Description

[0022] Figure 1 This is the circuit schematic diagram of this utility model.

[0023] In the diagram: 1. Main switch; 2. RC circuit one; 3. RC circuit two; 4. Full-bridge rectifier module; 5. Human proximity sensor; 6. Time relay; 7. Contactor; 8. Control switch; 9. Transistor; 10. Fuse; 11. Thermistor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In existing technologies, LED lighting systems in public places generally suffer from energy waste. Because lights need to remain on continuously to ensure safety when ambient light is low, electricity consumption increases significantly. Taking office building corridors as an example, lights remain on for extended periods after people have briefly passed by, not only causing ineffective energy loss but also accelerating the light decay process of LED light sources. Traditional control methods rely on fixed-time programs or manual operation, making it difficult to achieve precise control with power supply on demand.

[0026] To address the aforementioned issues, an intelligent control system capable of sensing human activity and automatically adjusting lighting conditions is needed. During the development process, it was discovered that relying solely on timed control cannot adapt to the uncertainty of human movement, while relying entirely on sensors carries the risk of misjudgment. After multiple experimental verifications, a combination of human body sensing and delayed control was adopted, ensuring necessary lighting requirements while eliminating ineffective energy consumption. A manual control module is also included to ensure continuous lighting can be maintained in special circumstances.

[0027] Therefore, as Figure 1 As shown, this application proposes a solution including an LED power supply circuit and a control circuit. The LED power supply circuit includes a main switch, a fuse, a two-stage RC filter circuit, a full-bridge rectifier module, and a thermal protection element. The control circuit integrates a human body sensor module, a time-delay relay, a contactor, and a manual switch. The main switch is connected to the mains power wire and then connected to the step-down filter circuit through the fuse. The rectified DC power is supplied to the control module after secondary filtering and temperature protection. After the human body sensor detects an activity signal, it triggers a transistor to drive a time-delay relay, which controls the contactor to switch the LED power supply circuit on and off. The manual switch can force the lighting to remain on.

[0028] The main switch is an electrical component that controls the on / off state of the entire circuit. It can be implemented using an air switch or circuit breaker, and is used to cut off the power supply in emergencies. A fuse is an overcurrent protection device connected in series with the live wire. It can be implemented using a glass tube fuse element, and melts when the circuit current exceeds its rated value to protect downstream components. An RC circuit is a voltage-reducing filter network composed of capacitors and resistors. It can be implemented using a polypropylene capacitor and a metal film resistor in parallel, and is used to convert high-voltage AC to low-voltage pulsating DC. A full-bridge rectifier module is a rectifier circuit composed of four diodes. It can be implemented using a surface-mount rectifier bridge, and converts AC to full-wave DC. A thermistor is a temperature-sensitive semiconductor component. It can be implemented using a ceramic-based PTC element, and automatically increases its impedance value when the circuit temperature exceeds a set threshold. A human proximity sensor is a non-contact bio-detection device. It can be implemented using a Doppler microwave sensor, and outputs a control signal by detecting changes in electromagnetic waves generated by human movement. A time relay is a control device with a time delay function, which can be implemented using a solid-state relay in conjunction with an RC time delay circuit. It maintains the contact state for a predetermined time after the trigger signal disappears. A contactor is an electromagnetic power switch, which can be implemented using a two-contact AC contactor. It controls the opening and closing of a high-current circuit with a small current. A control switch is a manually operated electronic component, which can be implemented using a self-resetting push-button switch. A short press switches the circuit state.

[0029] Specifically, after the mains power is connected to the system, the AC power enters the RC step-down circuit through the main switch and fuse. The stepped-down AC power is converted into pulsating DC by a full-bridge rectifier, and then filtered by a secondary filter circuit to eliminate harmonic interference. After the control circuit is powered on, the human body sensor continuously monitors the set area. When human activity is detected, the sensor outputs a high-level signal to turn on the transistor, the time relay immediately resets and keeps its contacts closed, the contactor coil is energized and engages, and the LED lights start working. After the person leaves, the sensor signal disappears, the time relay starts a delay program, and after the predetermined time is reached, the contacts open, the contactor is de-energized and released, and the lights automatically turn off. For long-term lighting, the contactor coil circuit can be directly connected by pressing the control switch.

[0030] Compared to existing technologies, traditional lighting control systems often employ a single control mode, either relying entirely on timers, resulting in insufficient flexibility, or solely on sensors, making them susceptible to environmental interference. This solution, through the coordinated operation of multi-level control logic, achieves both immediate response during personnel activity and delayed shutdown upon departure, while retaining a manual intervention channel. This composite control strategy effectively balances energy-saving requirements with ease of use, overcoming the inherent shortcomings of a single control mode.

[0031] Through the above technical solutions, this application can significantly reduce the duration of ineffective lighting in unattended conditions, and reduce power consumption by approximately 30%-50% through an automatic shutdown mechanism. Temperature protection components prevent overheating damage to the circuit, extending the service life of critical components. A manual control module ensures lighting needs are met in emergency situations, improving system usability and reliability. Multi-stage filtering design effectively suppresses grid harmonic interference, ensuring stable transmission of control signals.

[0032] This application further proposes that the voltage-degrading capacitor C1 of the RC circuit has a withstand voltage of ≥400V and a capacitance of 0.1~10μF; and the discharge resistor R1 has a resistance of 1MΩ~10MΩ, which is used to release the residual charge of the voltage-degrading capacitor after power is cut off.

[0033] The step-down capacitor C1 is a capacitive component used to reduce AC voltage. It can be implemented using a metallized polypropylene film capacitor, with a withstand voltage of at least 400V to withstand peak AC voltage. The capacitance range is 0.1–10μF to balance step-down efficiency and size limitations. The discharge resistor R1 is a resistive component connected in parallel across the step-down capacitor. It can be implemented using a metal oxide film resistor, with a resistance range of 1MΩ–10MΩ. This allows for rapid discharge of the capacitor's stored charge after power failure, while also preventing excessive power loss during normal operation.

[0034] Specifically, setting the voltage rating of the step-down capacitor C1 to above 400V effectively prevents the risk of breakdown caused by mains power fluctuations. A capacitance range of 0.1–10μF satisfies the 220V mains voltage reduction requirement while also controlling the circuit size to fit the internal space constraints of the lamp. The resistance range of the discharge resistor R1 ensures that after the circuit is powered off, the residual charge stored in the step-down capacitor can be completely released through the resistor within seconds. This avoids the risk of electric shock to maintenance personnel and prevents additional energy consumption due to insufficient resistance during normal operation. This combination of parameters ensures safety while maintaining circuit efficiency.

[0035] This application improves circuit reliability and eliminates the risk of electric shock caused by residual charge by increasing the capacitor's withstand voltage rating and configuring a discharge resistor with a specific resistance value.

[0036] Through the above technical solution, this application can ensure the safety and stability of the mains voltage reduction process, avoid short circuit faults caused by capacitor breakdown, and eliminate residual voltage after power failure by precisely matched discharge resistors. This not only ensures the safety of maintenance personnel, but also reduces energy loss caused by capacitor leakage and extends the service life of circuit components.

[0037] This application further proposes an RC circuit II, including an electrolytic capacitor C2 and a bleeder resistor R2. A thermistor is connected in series with the positive DC output terminal of the full-bridge rectifier module and then connected to the positive terminal of the electrolytic capacitor. The negative terminal of the electrolytic capacitor is connected to the negative DC output terminal of the full-bridge rectifier module. The RC circuit II is used to filter out harmonics after full-bridge rectification to obtain a stable DC voltage. The electrolytic capacitor C2 has a capacitance of 100 to 10000 μF and a withstand voltage of ≥25V. The bleeder resistor R2 has a resistance of 1kΩ to 10kΩ and is used to release the residual charge of the electrolytic capacitor after power is turned off.

[0038] Electrolytic capacitors are polarized capacitors that use an electrolyte as the cathode. They can be implemented using aluminum or tantalum electrolytic capacitors. Through their large-capacity energy storage characteristics, they absorb voltage fluctuations after rectification, stabilizing the DC output. A bleed resistor is a fixed-value resistor connected in parallel across the electrolytic capacitor. It can be implemented using carbon film or metal film resistors. After the circuit is de-energized, it forms a discharge circuit, eliminating residual charge inside the electrolytic capacitor.

[0039] Specifically, the pulsating DC output from the full-bridge rectifier module is filtered and stored by an electrolytic capacitor. Through a matching design of capacitance and voltage rating, high-frequency harmonic interference is effectively suppressed, preventing fluctuations in the LED drive voltage. The bleed resistor and the electrolytic capacitor form a parallel circuit. When the main switch is turned off, the energy stored in the electrolytic capacitor forms a current path through the bleed resistor, allowing the charge to be released quickly and preventing safety hazards caused by residual charge in the capacitor after power failure.

[0040] This solution, through the coordinated design of bleed resistors and electrolytic capacitors, ensures filtering effect while enabling rapid discharge of charge after power failure, thereby improving circuit safety and component lifespan.

[0041] Through the above technical solution, this application solves the problem of leakage loss caused by residual charge in electrolytic capacitors after power failure in traditional LED driver power supplies, reduces the risk of component breakdown caused by charge accumulation, and reduces voltage fluctuation damage to LED lamps through stable filtering, thus extending the service life of the overall circuit.

[0042] This application further proposes that the thermistor is a positive temperature coefficient thermistor, whose resistance increases with increasing temperature, and whose operating temperature is 60-100℃.

[0043] A positive temperature coefficient thermistor is a semiconductor element whose resistance increases non-linearly with increasing temperature. Specifically, it can be made from barium titanate-based ceramic material doped with rare earth elements and sintered. It exhibits low resistance at room temperature, but its resistance rises sharply when the temperature exceeds a threshold. This element is connected in series between the rectifier output and the filter capacitor in the circuit. When the circuit temperature rises abnormally to its operating temperature range, its resistance increases, creating a voltage divider effect, thereby reducing the output voltage.

[0044] Specifically, when the internal temperature of the LED driver power supply rises due to overload or abnormal ambient temperature, the resistance of the positive temperature coefficient thermistor will change dramatically with the increase in temperature. For example, when the temperature reaches between 60℃ and 100℃, its resistance can increase by more than three orders of magnitude, significantly increasing the equivalent impedance between the rectifier output terminal and the filter capacitor, thereby limiting current flow and reducing the output voltage. This process requires no additional control circuitry; the resistance value automatically recovers after the temperature anomaly is eliminated, achieving a self-recovery function for overheat protection.

[0045] Through the above technical solution, this application can automatically limit the output power when the internal temperature of the LED driver power supply is abnormal, preventing electrolytic capacitors from bursting or LED light source light decay from accelerating due to overheating. When the ambient temperature returns to normal, the circuit automatically resumes its working state, ensuring the continuous availability of the lighting system and avoiding the maintenance costs caused by frequent replacement of traditional protection components.

[0046] This application further proposes that the human proximity sensor is an infrared sensor or a microwave sensor, with a detection distance of 0 to 5 meters and an output signal of TTL level.

[0047] Infrared sensors are devices that detect infrared radiation emitted by the human body, typically using pyroelectric sensors that include Fresnel lenses and infrared filters. Microwave sensors detect changes in reflected microwaves, often using Doppler radar modules operating at 5.8 GHz or 10.525 GHz. A detection distance of 0 to 5 meters refers to the adjustable effective detection range of the sensor, adjustable by changing its sensitivity or transmission power. This range covers typical public spaces such as corridors and restrooms. TTL level refers to digital signals conforming to the transistor-to-transistor logic standard, using an interface where 0V represents low and 5V represents high. This standard allows direct matching with control components such as transistors and relays.

[0048] Specifically, when a human body enters the sensor's detection range, the infrared sensor captures specific wavelengths of infrared radiation emitted by the body, or the microwave sensor analyzes the frequency offset of the reflected wave to generate a high-level TTL signal. This signal is amplified by a transistor and then drives a time relay to reset, energizing the contactor coil and closing its contacts to connect the LED lighting circuit. When the person leaves the detection area, the sensor output returns to a low level, the time relay starts timing, and after a preset delay, it cuts off the power supply to the contactor, automatically turning off the lighting.

[0049] This solution offers both infrared and microwave sensor options, allowing users to choose the type with stronger anti-interference capabilities based on the installation environment. For example, microwave sensors can be used in high-temperature areas to avoid false triggering. The adjustable detection distance of 0 to 5 meters adapts to different spatial layouts; for instance, a 3-meter detection distance can be used in narrow corridors, while a 5-meter coverage area can be used in open areas. The standard TTL level output ensures direct compatibility with subsequent control circuits, eliminating the need for an additional level conversion module.

[0050] Through the above technical solution, this application effectively solves the energy waste problem caused by continuous operation of public place lighting systems, shortening the operating time of lamps to the actual demand period through intelligent sensing control. The use of selectable sensor types enhances environmental adaptability; for example, microwave sensors can be used in kitchen areas with heat source interference, while infrared sensors can be used in offices with clear personnel flow patterns. The adjustable detection distance function allows the same control module to be deployed in spaces of different sizes, reducing equipment customization costs. The standardized TTL interface design simplifies circuit connection complexity and improves system reliability.

[0051] This application further proposes that the delay range of the time relay is 10s to 30min, and the delay time can be changed by adjusting the internal potentiometer.

[0052] A time relay is an electrical component that uses electromagnetic principles to achieve time-delay control. Specifically, it can be implemented using a power-off delay relay. When the coil is energized, the contacts actuate instantaneously; after power is cut off, the internal delay mechanism maintains the contact state until the preset delay ends. An internal potentiometer is a variable resistor integrated into the time relay. It can be implemented using a knob-type or screwdriver-type adjustment structure. By changing the resistance value, the RC charging and discharging time constant is adjusted, thereby controlling the delay length.

[0053] Specifically, when the proximity sensor detects that a person has left, the output signal triggers a transistor to conduct, energizing and resetting the time relay coil. At this time, the contactor remains engaged, and the LED light remains illuminated. When the sensor signal disappears, the time relay begins a power-off delay, maintaining the contactor engaged for the set delay period via an internal potentiometer. After the delay ends, the relay contacts open, the contactor coil is de-energized, and the LED light automatically turns off. The delay range covers both short-term stay scenarios and long-term activity scenarios; for example, a shorter delay is needed for toilet use, while a longer delay can be set for corridors.

[0054] This solution uses an adjustable potentiometer to continuously set the delay time, enabling the same control circuit to be matched with different scenarios such as office buildings, shopping malls, and public restrooms, avoiding the maintenance costs caused by repeated manual hardware adjustments.

[0055] Through the above technical solution, this application can flexibly set the lighting delay time according to the actual environment, and accurately control the timing of LED lights to turn off while ensuring the necessary lighting duration, effectively reducing the invalid lighting duration in the unattended state, and reducing lamp wear caused by frequent switching or excessive operation.

[0056] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An LED lamp driver power supply control circuit, characterized in that: Includes LED power supply circuit and control circuit, The LED power supply circuit includes: a main switch (1), a fuse (10), RC circuit one, RC circuit two, a full-bridge rectifier module (4), and a thermistor (11). One end of the main switch (1) is connected to the external mains power line, and the other end is connected in series with the fuse (10) and then connected to the input terminal of the RC circuit. The RC circuit includes a step-down capacitor C1 and a discharge resistor R1: one end of the step-down capacitor C1 is connected to the output terminal of the fuse (10), and the other end is connected in series with the resistor R1 and then connected to the positive terminal of the AC input terminal of the full-bridge rectifier module (4); the negative terminal of the AC input terminal of the full-bridge rectifier module (4) is connected to the external mains neutral line; the RC circuit is used to step down the 220V mains voltage and perform preliminary filtering. The second RC circuit includes an electrolytic capacitor C2 and a bleed resistor R2: the positive DC output terminal of the full-bridge rectifier module (4) is connected in series with the thermistor (11) and then connected to the positive terminal of the electrolytic capacitor C2. The negative terminal of the electrolytic capacitor C2 is connected to the negative DC output terminal of the full-bridge rectifier module (4), and the negative DC output terminal is grounded. The second RC circuit is used to filter out the harmonics after full-bridge rectification to obtain a stable DC voltage. The thermistor (11) is used for overheat protection. When the circuit temperature rises abnormally, the resistance is increased to reduce the output voltage. The control circuit includes: a human proximity sensor (5), a time relay (6), a contactor (7), a control switch (8), and a transistor (9); The power supply terminal of the human proximity sensor (5) is connected to the DC positive output terminal of the full-bridge rectifier module (4), the ground terminal is grounded, and the output terminal is connected to the base of the transistor (9); the human proximity sensor (5) is used to detect people within a set range and output a switch signal. The collector of the transistor (9) is connected to the positive DC output terminal of the full-bridge rectifier module (4), and the emitter is connected to the trigger terminal of the time relay (6); the transistor (9) is used to amplify the signal of the human proximity sensor and trigger the time relay to reset. The time relay (6) adopts a power-off delay mode: one end of its coil is connected to the DC positive output terminal of the full-bridge rectifier module (4), and the other end is connected to one end of its normally closed contact; the other end of the normally closed contact is grounded; the time relay (6) is used to start the delay after the human body sensing signal disappears, and disconnect the contactor power supply after the delay ends. One end of the coil of the contactor (7) is connected to the DC positive output terminal of the full-bridge rectifier module (4), and the other end is connected to the other end of the normally closed contact of the time relay (6); one end of its normally open contact is connected to the DC positive output terminal of the full-bridge rectifier module (4), and the other end is connected to the power supply terminal of the LED lamp, and the power supply terminal of the LED lamp is grounded; the contactor (7) is used to control the power supply of the LED lamp. One end of the control switch (8) is connected to the DC positive output terminal of the full-bridge rectifier module (4), and the other end is connected to the other end of the normally closed contact of the time relay (6); the control switch (8) is a push-button normally open switch, used to manually force the LED lamp to illuminate for a long time.

2. The LED lamp driver power supply control circuit according to claim 1, characterized in that: The step-down capacitor C1 in the RC circuit has a withstand voltage of ≥400V and a capacitance of 0.1~10μF; the discharge resistor R1 has a resistance of 1MΩ~10MΩ and is used to release the residual charge of the step-down capacitor after power is cut off.

3. The LED lamp driver power supply control circuit according to claim 1, characterized in that: The electrolytic capacitor C2 in the second RC circuit has a capacitance of 100~10000μF and a withstand voltage of ≥25V; the bleeder resistor R2 has a resistance of 1kΩ~10kΩ and is used to release the residual charge of the electrolytic capacitor after power is cut off.

4. The LED lamp driver power supply control circuit according to claim 1, characterized in that: The thermistor (11) is a positive temperature coefficient PTC thermistor, whose resistance increases with increasing temperature and whose operating temperature is 60~100℃.

5. The LED lamp driver power supply control circuit according to claim 1, characterized in that: The human proximity sensor (5) is an infrared sensor or a microwave sensor, with a detection distance of 0~5m and an output signal of TTL level.

6. The LED lamp driver power supply control circuit according to claim 1, characterized in that: The delay range of the time relay (6) is 10s~30min, and the delay time can be changed by adjusting the internal potentiometer.

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