Non-contact automatic detection triggering high-efficiency street lamp control device

Abstract

The utility model relates to the technical field of street lamp control, in particular to a non-contact automatic detection triggering high-efficiency street lamp control device. According to the utility model, the illumination detection module, the ultrasonic transmitting circuit and the ultrasonic amplifying and shaping module are arranged, so that the controller of the LED street lamp can be monitored in real time, the LED street lamp is more intelligent, the Boost circuit, the QR quasi-resonant flyback converter, the charging and stopping control circuit and the power supply voltage stabilizing circuit are arranged, and the LED street lamp is more intelligent. The efficiency, reliability and stability of the LED control circuit can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of street lamp control, in particular to a high-efficiency street lamp control device with non-contact automatic detection triggering. Background Art

[0002] The street light controller mainly controls the on and off of the street light, and supports light control, time control, remote control, etc. There are two types of street light controllers: indoor type: installed at the bottom of the indoor lighting control cabinet; outdoor type: can be installed according to user requirements and placed in a stainless steel cabinet.

[0003] For example, CN207305020U involves a street lamp controller, a street lamp and a street lamp system; the communication interface circuit receives the control instruction sent by the server, and sends the control instruction to the microcontroller; the microcontroller saves the control instruction, and sends a control signal to the switch control circuit and the light adjustment circuit; the switch control circuit controls the opening or closing of multiple light sources on the street lamp through multiple control ports; the light adjustment circuit adjusts the light intensity of the multiple light sources on the street lamp through multiple adjustment ports; the street lamp controller in the utility model can independently control the working state of the light source on the street lamp, avoiding the problem of losing control of the street lamp when the external gateway or server fails, and improving the independent control ability of the street lamp. However, since it only adopts the light detection solution, the scope of use is narrow and the sensitivity is low, and better energy-saving effects and intelligent strategies cannot be achieved, which limits the promotion of the product.

[0004] In order to monitor the distance of people or vehicles passing by street lamps in real time and control the brightness of street lamps, a high-efficiency street lamp control device with non-contact automatic detection and triggering is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a high-efficiency street lamp control device with non-contact automatic detection and triggering, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model provides a high-efficiency street lamp control device with non-contact automatic detection triggering, including a Boost boost circuit, an auxiliary power supply circuit, a QR quasi-resonant flyback converter, a charge-stop control circuit, a 15V lithium battery pack, a power supply voltage stabilization circuit, an STM32 single-chip microcomputer, a light detection module, an ultrasonic transmission circuit, an ultrasonic amplification and shaping module, a MOS tube drive circuit and a wireless communication module;

[0007] The Boost boost circuit is connected to the light detection module, the ultrasonic amplification and shaping module, and the QR quasi-resonant flyback converter, the QR quasi-resonant flyback converter is connected to the charge stop control circuit, the charge stop control circuit is connected to the power supply stabilization circuit, the power supply stabilization circuit, the light detection module, and the ultrasonic amplification and shaping module are all connected to the STM32 single-chip microcomputer, and the STM32 single-chip microcomputer is connected to the ultrasonic transmission circuit, the MOS tube drive circuit, and the wireless communication module;

[0008] The Boost boost circuit is used to boost the voltage and provide a stable power supply voltage through the auxiliary power supply circuit and the QR quasi-resonant flyback converter. The charge-stop control circuit is used as the input of the power supply voltage stabilization circuit to power the STM32 single-chip microcomputer. The STM32 single-chip microcomputer controls the ultrasonic transmitting circuit to detect the distance of the vehicle or person to the LED street lamp in real time according to the information of the light detection module and the ultrasonic amplification and shaping module, and controls the LED street lamp through the MOS tube drive circuit.

[0009] As a further improvement of the technical solution, the Boost circuit includes a MOS tube Q1 and a current controller, wherein:

[0010] The current controller is connected to the gate of the MOS tube Q1;

[0011] The drain of the MOS tube Q1 is connected to the resistor R1 and connected to the positive electrode of the diode D1, the resistor R1 is connected to the inductor L1 and connected to the current controller, the inductor L1 is connected to the solar panel, and the cathode of the diode D1 is connected to the capacitor C1, the resistor R2 and connected to the VDC1 terminal;

[0012] The source of the MOS tube Q1 is connected to the resistor R3, the other end of the capacitor C1, the solar panel and grounded. The resistor R3 is connected to the other end of the resistor R2 and connected to the current controller.

[0013] As a further improvement of the technical solution, the QR quasi-resonant flyback converter includes a transformer T2,

[0014] One end of the W3 winding of the transformer T2 is connected to the VDC1 end, and the other end is connected to the drain of the MOS transistor Q3 and connected to the capacitor C6. The source of the MOS transistor Q3 is connected to the other end of the capacitor C6 and is grounded.

[0015] One end of the W4 winding of the transformer T2 is connected to the positive electrode of the diode D4 and connected to the capacitor C7, and the other end is connected to the capacitor C8 and grounded. The cathode of the diode D4 is connected to the resistor R6, the other end of the capacitor C8 is connected to the Vout1 end in parallel, and the resistor R6 is connected to the other end of the capacitor C7.

[0016] As a further improvement of the technical solution, the charging and stopping control circuit includes comparators U1A and U1B, wherein:

[0017] The comparator U1A is connected to the positive terminal of the comparator U1B, the negative terminal of the light emitting diode LED1, the resistors R9, R13, and the capacitor C9. The positive terminals of the comparator and U1A are connected to the first potentiometer R17. The negative terminal of the comparator U1A is connected to the resistor R7 and connected to the positive terminal of the diode D5. The resistor R7 is connected to the resistors R8, R10, R12, and the positive terminal of the diode D6 and connected to the Vout1 terminal. The resistor R8 is connected to the positive terminal of the light emitting diode LED1.

[0018] The comparator U1B is connected to the resistors R14 and R15 and the other end of the resistor R13, the negative terminal of the comparator U1B is connected to the resistor R11, the other end of the resistor R10 and the other end of the resistor R14, the resistor R11 is connected to the other end of the capacitor C9, the first potentiometer R17, the cathode of the diode D5, the cathode of the 15V lithium battery pack, the cathode of the light emitting diode LED2 and grounded, and the anode of the light emitting diode LED2 is connected to the other end of the resistor R9;

[0019] The resistor R15 is connected to the base of the transistor VT1 and connected to the cathode of the diode D7, the anode of the diode D7 is connected to the cathode of the diode D6, the emitter of the transistor VT1 is connected to the other end of the resistor R12, the collector of the transistor VT1 is connected to the resistor R16, the anode of the 15V lithium battery pack is connected to the 15V end, and the resistor R16 is connected to the first potentiometer R17.

[0020] As a further improvement of the technical solution, the light detection module includes a voltage comparator and a photoresistor sensor.

[0021] The INA+ pin of the voltage comparator is connected to the capacitor C14, the resistor R19 and the pin 1 of the photoresistor sensor;

[0022] The GND pin of the voltage comparator is connected to the other end of the capacitor C14, the 2nd pin of the photoresistor sensor and grounded;

[0023] The OUTA pin of the voltage comparator is connected to the resistor R20 and connected to the P1.0 pin of the STM32 microcontroller. The resistor R20 is connected to the other end of the resistor R19 and connected to the VCC terminal.

[0024] As a further improvement of the technical solution, the ultrasonic transmitting circuit includes a level conversion chip,

[0025] The VCC pin of the level conversion chip is connected to the capacitor C18 and connected to the emitter of the transistor VT2, the capacitor C18 is grounded, the base of the transistor VT2 is connected to the resistor R21, the resistor R21 is connected to the POWKEY pin of the STM32 microcontroller, and the collector of the transistor VT2 is connected to the VCC terminal;

[0026] The T1OUT and T2OUT pins of the level conversion chip are connected to the ultrasonic transmitter US_TR;

[0027] The C1- pin of the level conversion chip is connected to the capacitor C19, and the C1+ pin of the level conversion chip is connected to the other end of the capacitor C19;

[0028] The V- pin of the level conversion chip is connected to the capacitor C17, the V+ pin of the level conversion chip is connected to the capacitor C20, and the capacitor C20 is connected to the other end of the capacitor C17 and grounded;

[0029] The C2- pin of the level conversion chip is connected to the capacitor C16, and the C2+ pin of the level conversion chip is connected to the other end of the capacitor C16;

[0030] The T1IN pin of the level conversion chip is connected to the P2.1 pin of the STM32 microcontroller, and the T2IN pin of the level conversion chip is connected to the P2.0 pin of the STM32 microcontroller;

[0031] The GND pin of the level conversion chip is grounded.

[0032] As a further improvement of the technical solution, the ultrasonic amplification and shaping module includes two single-channel comparators and amplifiers U2A and U2B, wherein:

[0033] The amplifier U2A is connected to the resistor R23 and the capacitor C22, the resistor R23 is connected to the negative terminal of the amplifier U2A and the resistor R22, the resistor R22 is connected to the capacitor C21, the capacitor C21 is connected to the ultrasonic transmitter US_TR, the positive terminal of the amplifier U2A is connected to the VREF pin of the STM32 microcontroller, the capacitor C22 is connected to the resistor R24 ​​and the resistor R27;

[0034] The resistor R24 ​​is connected to the IN+ pin of the single comparator and connected to the resistor R26, the IN- pin of the single comparator is connected to the capacitor C23 and connected to the second potentiometer R25, the capacitor C23 is grounded, the second potentiometer R25 is connected to the VCC terminal, the OUT pin of the single comparator is connected to the other end of the resistor R26 and connected to the P1.1 pin of the STM32 microcontroller, the VCC pin of the single comparator is connected to the capacitor C24, and the GND pin of the single comparator is connected to the other end of the capacitor C24 and grounded;

[0035] The resistor R27 is connected to the negative terminal of the amplifier U2B and connected to the resistor R28, the positive terminal of the amplifier U2B is connected to the VREF pin of the STM32 microcontroller, the amplifier U2B is connected to the capacitor C25 and connected to the other end of the resistor R28, and the capacitor C25 is connected to the resistor R29;

[0036] The resistor R29 is connected to the IN+ pin of another single-channel comparator and connected to the resistor R31, the IN- pin of another single-channel comparator is connected to the capacitor C26 and connected to the third potentiometer R30, the capacitor C26 is grounded, the third potentiometer R30 is connected to the VCC end, the OUT pin of another single-channel comparator is connected to the other end of the resistor R31 and connected to the P1.2 pin of the STM32 microcontroller, the VCC pin of another single-channel comparator is connected to the capacitor C27, and the GND pin of another single-channel comparator is connected to the other end of the capacitor C27 and grounded.

[0037] Compared with the prior art, the utility model has the following beneficial effects:

[0038] 1. The high-efficiency street lamp control device triggered by non-contact automatic detection is equipped with a light detection module, an ultrasonic transmitting circuit and an ultrasonic amplification and shaping module, which can realize real-time monitoring of the controller of the LED street lamp, making the LED street lamp more intelligent.

[0039] 2. The high-efficiency street lamp control device triggered by non-contact automatic detection is equipped with a Boost circuit, a QR quasi-resonant flyback converter, a charge-stop control circuit, and a power supply voltage stabilization circuit, which can improve the efficiency, reliability, and stability of the LED control circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the control structure of the utility model;

[0041] Figure 2 This is the Boost circuit diagram of the utility model;

[0042] Figure 3 This is the auxiliary power supply circuit diagram of the utility model;

[0043] Figure 4 This is a circuit diagram of a QR quasi-resonant flyback converter of the utility model;

[0044] Figure 5 This is the charging and stopping control circuit diagram of the utility model;

[0045] Figure 6 This is a power supply stabilizing circuit diagram of the utility model;

[0046] Figure 7 This is the circuit diagram of the light detection module of the utility model;

[0047] Figure 8 This is the ultrasonic transmitting circuit diagram of the utility model;

[0048] Fig. 9 This is the circuit diagram of the ultrasonic amplification and shaping module of the utility model;

[0049] Fig.10 This is the MOS tube driving circuit diagram of the utility model;

[0050] Fig.11 This is a circuit diagram of the wireless communication module of the present utility model. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0052] With the rapid development of the global economy and technology, urban street lighting has become an important part of urban infrastructure development and construction. At the same time, the reform and exploration of urban street lighting technology has become more and more extensive. As an efficient and environmentally friendly display technology, LED smart street lights have become the main solution in the field of LED control. When smart street light control technology is applied to large-scale urban street lighting, it has brought great positive effects on urban energy conservation and environmental protection, improving street light working efficiency and accurate positioning.

[0053] Urban street light control has become more diverse and controllable, and more complex control circuits need to be designed to meet the needs of different applications. Therefore, smart street light control is particularly important. Traditional lighting monitoring systems cannot monitor the distance of people or vehicles passing by street lights in real time, thereby controlling the brightness of street lights and cannot achieve significant intelligence and energy saving.

[0054] At present, there is a technical solution on the market that uses a light adjustment circuit to adjust the light intensity of multiple light sources on street lamps (such as street lamp controller, street lamp and street lamp system, publication number: CN207305020U), which is used to adjust the lighting conditions of street lamps. This solution effectively solves the problem of street lamps losing control when an external gateway or server fails, and has the characteristics of stable reliability and security. However, since it only uses a light detection solution, it has a narrow range of use and low sensitivity, and cannot achieve better energy-saving effects and intelligent strategies, which limits the promotion of this product.

[0055] Therefore, for the application scenarios of LED street lamp controllers, a high-efficiency quasi-resonant ultrasonic ranging intelligent street lamp control device is explored to meet market demand.

[0056] See also Figure 1-Figure 11 As shown, this embodiment provides a high-efficiency street lamp control device triggered by non-contact automatic detection, including a Boost boost circuit, an auxiliary power supply circuit, a QR quasi-resonant flyback converter, a charge stop control circuit, a 15V lithium battery pack, a power supply voltage stabilizing circuit, an STM32 single-chip microcomputer, a light detection module, an ultrasonic transmission circuit, an ultrasonic amplification and shaping module, a MOS tube drive circuit and a wireless communication module. The Boost boost circuit is connected to the light detection module, the ultrasonic amplification and shaping module, and the QR quasi-resonant flyback converter. The QR quasi-resonant flyback converter is connected to the charge stop control circuit, and the charge stop control circuit is connected to the power supply voltage stabilizing circuit. The power supply voltage stabilizing circuit, the light detection module, and the ultrasonic amplification and shaping module are all connected to the STM32 single-chip microcomputer, and the STM32 single-chip microcomputer is connected to the ultrasonic transmission circuit, the MOS tube drive circuit, and the wireless communication module;

[0057] The Boost circuit boosts the voltage and provides a stable power supply voltage through the auxiliary power supply circuit and the QR quasi-resonant flyback converter. The charge-stop control circuit serves as the input of the power supply voltage stabilization circuit to power the STM32 microcontroller. The STM32 microcontroller controls the ultrasonic transmitting circuit according to the information of the light detection module and the ultrasonic amplification and shaping module to detect the distance of the vehicle or person to the LED street lamp in real time, and controls the LED street lamp through the MOS tube drive circuit.

[0058] The boost circuit includes a MOS tube Q1 and a current controller, wherein:

[0059] The current controller is connected to the gate of the MOS tube Q1;

[0060] The drain of MOS tube Q1 is connected to resistor R1 and connected to the positive electrode of diode D1, resistor R1 is connected to inductor L1 and connected to the current controller, inductor L1 is connected to the solar panel, the negative electrode of diode D1 is connected to capacitor C1, resistor R2 and connected to VDC1 terminal;

[0061] The source of the MOS tube Q1 is connected to the resistor R3, the other end of the capacitor C1, the solar panel and the ground. The resistor R3 is connected to the other end of the resistor R2 and is connected to the current controller.

[0062] The current controller in the circuit is a UC3843 fixed frequency current mode controller. Solar energy is directly converted into electrical energy through the solar panel. The obtained electrical energy is used as the input of the Boost circuit. The Boost circuit boosts Vin to 311V to obtain VDC.

[0063] The auxiliary power supply circuit includes a transformer T1 and a MOS tube Q2, where:

[0064] One end of the W1 winding of the transformer T1 is connected to the VDC1 terminal, and the other end is connected to the drain of the MOS tube Q2, and the source of the MOS tube Q2 is grounded;

[0065] One end of the W2 winding of the transformer T1 is connected to the positive electrode of the diode D2 and connected to the capacitor C2, and the other end is connected to the capacitor C3, the W3 winding of the transformer T1 and grounded, the negative electrode of the diode D2 is connected to the other end of the capacitor C3, the resistor R4 and connected to the 15V+ end, and the resistor R4 is connected to the other end of the capacitor C2;

[0066] The W3 winding of the transformer T1 is connected to the positive electrode of the diode D3 and in parallel to the capacitor C4. The negative electrode of the diode D3 is connected to the resistor R5 and the capacitor C5 and in parallel to the 5V+ terminal. The resistor R5 is connected to the other end of the capacitor C4, and the capacitor C5 is grounded.

[0067] In order to make the whole circuit run stably and efficiently, two auxiliary voltages are generated through the auxiliary power supply circuit to provide stable 5V and 15V power supply voltages for chips such as UC3843 in the control loop and other circuits to ensure that each circuit can work normally.

[0068] The QR quasi-resonant flyback converter includes a transformer T2,

[0069] One end of the W3 winding of the transformer T2 is connected to the VDC1 terminal, and the other end is connected to the drain of the MOS tube Q3 and connected to the capacitor C6. The source of the MOS tube Q3 is connected to the other end of the capacitor C6 and is grounded.

[0070] One end of the W4 winding of the transformer T2 is connected to the anode of the diode D4 and connected to the capacitor C7, and the other end is connected to the capacitor C8 and grounded. The cathode of the diode D4 is connected to the resistor R6, the other end of the capacitor C8 is connected to the Vout1 end, and the resistor R6 is connected to the other end of the capacitor C7.

[0071] In order to improve the efficiency of the entire circuit, two auxiliary voltages are generated through the auxiliary power supply circuit to provide a stable Vout1 supply voltage for chips such as UCC28600 and other circuits in the control loop circuit. C6 resonates with the drain-source voltage of Q3 to ensure that each circuit can work normally, thereby improving the efficiency of the circuit.

[0072] The charge-stop control circuit includes comparators U1A and U1B, where:

[0073] The comparator U1A is connected to the positive terminal of the comparator U1B, the negative terminal of the light emitting diode LED1, the resistors R9, R13, and the capacitor C9. The positive terminals of the comparator and U1A are connected to the first potentiometer R17. The negative terminal of the comparator U1A is connected to the resistor R7 and connected to the positive terminal of the diode D5. The resistor R7 is connected to the resistors R8, R10, R12, and the positive terminal of the diode D6 and connected to the Vout1 terminal. The resistor R8 is connected to the positive terminal of the light emitting diode LED1.

[0074] The comparator U1B is connected to the resistors R14 and R15 and the other end of the resistor R13, the negative terminal of the comparator U1B is connected to the resistor R11, the other end of the resistor R10 and the other end of the resistor R14, the resistor R11 is connected to the other end of the capacitor C9, the first potentiometer R17, the cathode of the diode D5, the cathode of the 15V lithium battery pack, the cathode of the light emitting diode LED2 and grounded, and the anode of the light emitting diode LED2 is connected to the other end of the resistor R9;

[0075] Resistor R15 is connected to the base of transistor VT1 and to the cathode of diode D7, the anode of diode D7 is connected to the cathode of diode D6, the emitter of transistor VT1 is connected to the other end of resistor R12, the collector of transistor VT1 is connected to resistor R16, the anode of 15V lithium battery pack and the 15V end, and resistor R16 is connected to the first potentiometer R17.

[0076] One end of this circuit is connected to Vout1, and the other end is connected to the charged battery. It can perform pulsating constant current charging on the battery. It has the function of automatically stopping charging when the battery voltage reaches the set value. According to the voltage of the voltage-stabilized power supply, 1-10 batteries can be charged. The light-emitting diode LED1 is a charging indicator, and the light-emitting diode LED2 is a charging stop indicator.

[0077] The power supply voltage stabilization circuit includes chip UP1,

[0078] The IN pin of chip UP1 is connected to capacitors C10 and C11 and connected to the 15V terminal;

[0079] The ADJ pin of chip UP1 is connected to the other end of capacitor C10, the other end of capacitor C11 and grounded;

[0080] The OUT pin of the chip UP1 is connected to capacitors C12, C13, and resistor R18 and connected to the 3.3V terminal. The capacitors C12 and C13 are connected to the anode of the diode D8 and grounded. The cathode of the diode D8 is connected to the other end of the resistor R18.

[0081] The output voltage Vout of the 15V lithium battery pack is used as the input of the voltage stabilization circuit, and the output voltage is stabilized at 3.3V to power the STM32 microcontroller.

[0082] The light detection module includes a voltage comparator and a photoresistor sensor.

[0083] The INA+ pin of the voltage comparator is connected to capacitor C14, resistor R19 and to pin 1 of the photoresistor sensor;

[0084] The GND pin of the voltage comparator is connected to the other end of capacitor C14, pin 2 of the photoresistor sensor and grounded;

[0085] The OUTA pin of the voltage comparator is connected to the resistor R20 and connected to the P1.0 pin of the STM32 microcontroller. The resistor R20 is connected to the other end of the resistor R19 and connected to the VCC terminal.

[0086] The voltage comparator is an LM393 comparator, which uses a photoresistor sensor detection circuit to convert the light information detected by the photoresistor sensor into an analog voltage signal. After the analog signal is inserted into the LM393 comparator, the DO digital signal (i.e. high and low levels) is obtained and sent to the P1.0 pin of the STM32 microcontroller.

[0087] The ultrasonic transmitting circuit includes a level conversion chip.

[0088] The VCC pin of the level conversion chip is connected to capacitor C18 and connected to the emitter of transistor VT2. Capacitor C18 is grounded. The base of transistor VT2 is connected to resistor R21. Resistor R21 is connected to the POWKEY pin of the STM32 microcontroller. The collector of transistor VT2 is connected to the VCC terminal.

[0089] The T1OUT and T2OUT pins of the level conversion chip are connected to the ultrasonic transmitter US_TR;

[0090] The C1- pin of the level conversion chip is connected to capacitor C19, and the C1+ pin of the level conversion chip is connected to the other end of capacitor C19;

[0091] The V- pin of the level conversion chip is connected to capacitor C17, the V+ pin of the level conversion chip is connected to capacitor C20, and capacitor C20 is connected to the other end of capacitor C17 and grounded;

[0092] The C2- pin of the level conversion chip is connected to the capacitor C16, and the C2+ pin of the level conversion chip is connected to the other end of the capacitor C16;

[0093] The T1IN pin of the level conversion chip is connected to the P2.1 pin of the STM32 microcontroller, and the T2IN pin of the level conversion chip is connected to the P2.0 pin of the STM32 microcontroller;

[0094] The GND pin of the level conversion chip is grounded.

[0095] In this circuit, the ultrasonic transmitter US_TR is a T40-16 ultrasonic transceiver, and the level conversion chip is a MAX232 single-power level conversion chip. In order to reduce the interference and power consumption of the transmitting circuit to the receiving circuit, the advanced timer TIM1 of the STM32 microcontroller outputs two complementary PWM signals of 40kHz and 50% duty cycle, which are P2.0 and P2.1 respectively. After the MAX232 boost, about 18Vpp is generated to drive the ultrasonic transceiver T40-16 and stimulate ultrasonic waves. Each time, 8 cycle pulses are transmitted. The circuit turns on and off the power of MAX232 through the transistor VT2. Before starting to transmit, turn on the power of MAX232, and start transmitting after the circuit is stable, and turn off the power of MAX232 after the transmission is completed.

[0096] The ultrasonic amplification and shaping module includes two single-channel comparators and amplifiers U2A and U2B, where:

[0097] Amplifier U2A is connected to resistor R23 and capacitor C22, resistor R23 is connected to the negative terminal of amplifier U2A and resistor R22, resistor R22 is connected to capacitor C21, capacitor C21 is connected to ultrasonic transmitter US_TR, the positive terminal of amplifier U2A is connected to VREF pin of STM32 microcontroller, capacitor C22 is connected to resistor R24 ​​and resistor R27;

[0098] Resistor R24 ​​is connected to the IN+ pin of the single comparator and connected to resistor R26, the IN- pin of the single comparator is connected to capacitor C23 and connected to the second potentiometer R25, capacitor C23 is grounded, the second potentiometer R25 is connected to the VCC terminal, the OUT pin of the single comparator is connected to the other end of resistor R26 and connected to the P1.1 pin of the STM32 microcontroller, the VCC pin of the single comparator is connected to capacitor C24, and the GND pin of the single comparator is connected to the other end of capacitor C24 and grounded;

[0099] Resistor R27 is connected to the negative terminal of amplifier U2B and connected to resistor R28, the positive terminal of amplifier U2B is connected to the VREF pin of STM32 microcontroller, amplifier U2B is connected to capacitor C25 and connected to the other end of resistor R28, capacitor C25 is connected to resistor R29;

[0100] Resistor R29 is connected to the IN+ pin of another single comparator and connected to resistor R31, the IN- pin of another single comparator is connected to capacitor C26 and connected to the third potentiometer R30, capacitor C26 is grounded, the third potentiometer R30 is connected to the VCC end, the OUT pin of another single comparator is connected to the other end of resistor R31 and connected to the P1.2 pin of the STM32 microcontroller, the VCC pin of another single comparator is connected to capacitor C27, and the GND pin of another single comparator is connected to the other end of capacitor C27 and grounded.

[0101] Both single-channel comparators are LMV331 comparators, and amplifiers U2A and U2B are NE5532 amplifiers. In order to make the circuit have better noise, higher small signal bandwidth and power supply bandwidth, different threshold comparators are used for long and short distance measurements. The obtained echo signal is amplified by the NE5532 amplifier and enters the P1.1 and P1.2 pins of the STM32 microcontroller after being shaped by the comparator LMV331.

[0102] The MOS tube driving circuit includes the VCC pin of the driving chip connected to the positive electrode of the diode D9, and the resistor R33 connected in parallel to the VCC terminal;

[0103] The IN pin of the driver chip is connected to the collector of transistor VT3 and the other end of resistor R33, the base of transistor VT3 is connected to resistor R32 and resistor R34, and resistor R32 is connected to the P2.2 pin of the STM32 microcontroller;

[0104] The COM pin of the driver chip is connected to the emitter of transistor VT3 and the other end of resistor R34;

[0105] The VB pin of the driver chip is connected to the cathode of diode D9 and capacitor C28;

[0106] The HO pin of the driver chip is connected to the resistor R35 and connected to the key switch S, the key switch S is grounded, the resistor R35 is connected to the resistors R36 and R37 and connected to the base of the transistor VT3, the emitter of the transistor VT3 is connected to the other end of the resistor R37 and connected to the ground, the collector of the transistor VT3 is connected to the gate of the MOS tube Q4, the drain of the MOS tube Q4 is connected to the LED street lamp, and the source of the MOS tube Q4 is grounded;

[0107] The VS pin of the driver chip is connected to the other end of capacitor C28 and in parallel to the other end of resistor R36.

[0108] The driving chip is the IR2118 chip. In order to improve the anti-interference ability and reliability of the circuit, the PWM signal obtained from the microcontroller output port P2.1 is amplified, and then output through the chip IR2118 and the MOS tube is driven by a button.

[0109] The wireless communication module includes a communication chip, and the ESP_TXD pin of the communication chip is connected to the RXD pin of the STM32 microcontroller;

[0110] The EN pin of the communication chip is connected to resistor R38, the RST pin is connected to resistor R39, the VCC pin is connected to the other end of resistor R38, resistor R39, capacitor C29 and connected to the 3.3V terminal, and capacitor C29 is grounded;

[0111] The ESR_RXD pin of the communication chip is connected to the TXD pin of the STM32 microcontroller.

[0112] The communication chip is the ESP8266-01 wireless module. In order to improve the real-time performance of the entire circuit, a wireless communication module is used. The STM32 microcontroller sends the internally stored data to the client in real time through the TXD port, and receives the instructions sent by the client through the RXD port.

[0113] A high-efficiency street light control device triggered by non-contact automatic detection in this embodiment, when in use, solar energy is directly converted into electric energy through the solar panel, and the obtained electric energy is used as the input of the Boost boost circuit, and the Boost boost circuit boosts Vin to 311V to obtain VDC, and generates two auxiliary voltages through the auxiliary power supply circuit, one of which provides stable 5V and 15V power supply voltages for chips such as UC3843 and other circuits in the control loop to ensure that each circuit can work normally, and the other provides a stable power supply voltage of Vout1 for chips such as UCC28600 and other circuits in the control loop circuit, and the capacitor C6 resonates with the drain-source voltage of the MOS tube Q3, and the charge-stop control circuit has one end connected to Vout1 and one end connected to the charged battery, the comparator U1A and the peripheral circuit constitute a comparator, the comparator U1B and the peripheral circuit constitute a rectangular wave generator, and the transistor VT1 and the peripheral circuit constitute a constant current source. When R12=10Ω, the charging current is 60mA;

[0114] When the battery is in charging state, the voltage at both ends is very low, the comparator U1A is at a low level, and the comparator U1B is in oscillation, outputting a rectangular wave of about 100Hz, which is output through the transistor VT1 to perform pulsating constant current charging on the battery;

[0115] When the voltage across the battery reaches a predetermined value, the comparator U1A outputs a high level, the comparator U1B stops oscillating and outputs a high level, the transistor VT1 is cut off, the charging stops, LED1 is a charging indication, LED2 is a stop charging indication, and the voltage value when the charging stops can be set by adjusting the first potentiometer R17. The battery voltage is used as the input of the voltage stabilizing circuit. After the voltage stabilizing circuit, a stable 3.3V voltage can be output, thereby powering the single-chip microcomputer;

[0116] The photoresistor sensor detection circuit is used to convert the light information detected by the photoresistor sensor into an analog voltage signal. After the analog signal is inserted into the LM393 comparator, the DO digital signal (i.e. high and low levels) is obtained and sent to the single-chip microcomputer P1.0. The advanced timer TIM1 of the STM32 single-chip microcomputer outputs two complementary PWM signals of 40kHz and 50% duty cycle, which are P2.0 and P2.1 respectively. After Max232 boost, about 18Vpp is generated to drive the ultrasonic transmitter T40-16 and stimulate ultrasonic waves. Each time, 8 cycle pulses are emitted. The circuit turns on and off the power supply of Max232 through the transistor VT2. Before starting to emit, turn on the power supply of Max232, wait for the circuit to stabilize, start to emit, and turn off the power supply of Max232 after the emission is completed;

[0117] Comparators with different thresholds are used. The short-distance comparator measures the range of 0-5m, and the long-distance comparator measures the range of 5m-100m. The echo signal is amplified by the NE5532 amplifier, and enters the single-chip microcomputer P1.1 and P1.2 after being shaped by the comparator LMV331. The PWM signal obtained from the single-chip microcomputer output port P2.1 is amplified, and after being output through the chip IR2118, the MOS tube is driven by a button, thereby driving the LED street lamp;

[0118] Wireless communication mainly uses ESP8266-01 chip. The microcontroller sends the internally stored data to the client in real time through TXD port, and receives the command sent by the client through RXD port. Finally, it can detect the distance of vehicles or people to LED street lights in real time. Within 5m of the close distance, all lights within 5m can be turned on; when the distance is 5-100m, the street lights on one side within 100m can be turned on, thereby realizing automatic control of street lights on and off and energy saving.

[0119] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-efficiency street light control device with non-contact automatic detection triggering, characterized in that: Including Boost circuit, auxiliary power circuit, QR quasi-resonant flyback converter, charge-stop control circuit, 15V lithium battery pack, power supply voltage stabilization circuit, STM32 microcontroller, light detection module, ultrasonic transmission circuit, ultrasonic amplification and shaping module, MOS tube drive circuit and wireless communication module; The Boost boost circuit is connected to the light detection module, the ultrasonic amplification and shaping module, and the QR quasi-resonant flyback converter, the QR quasi-resonant flyback converter is connected to the charge stop control circuit, the charge stop control circuit is connected to the power supply stabilization circuit, the power supply stabilization circuit, the light detection module, and the ultrasonic amplification and shaping module are all connected to the STM32 single-chip microcomputer, and the STM32 single-chip microcomputer is connected to the ultrasonic transmission circuit, the MOS tube drive circuit, and the wireless communication module; The Boost boost circuit is used to boost the voltage and provide a stable power supply voltage through the auxiliary power supply circuit and the QR quasi-resonant flyback converter. The charge-stop control circuit is used as the input of the power supply voltage stabilization circuit to power the STM32 single-chip microcomputer. The STM32 single-chip microcomputer controls the ultrasonic transmitting circuit to detect the distance of the vehicle or person to the LED street lamp in real time according to the information of the light detection module and the ultrasonic amplification and shaping module, and controls the LED street lamp through the MOS tube drive circuit.

2. The high-efficiency street light control device with non-contact automatic detection triggering according to claim 1 is characterized in that: The Boost circuit includes a MOS tube Q1 and a current controller, wherein: The current controller is connected to the gate of the MOS tube Q1; The drain of the MOS tube Q1 is connected to the resistor R1 and connected to the positive electrode of the diode D1, the resistor R1 is connected to the inductor L1 and connected to the current controller, the inductor L1 is connected to the solar panel, and the cathode of the diode D1 is connected to the capacitor C1, the resistor R2 and connected to the VDC1 terminal; The source of the MOS tube Q1 is connected to the resistor R3, the other end of the capacitor C1, the solar panel and grounded. The resistor R3 is connected to the other end of the resistor R2 and connected to the current controller.

3. The high-efficiency street light control device with non-contact automatic detection triggering according to claim 1 is characterized in that: The QR quasi-resonant flyback converter includes a transformer T2, One end of the W3 winding of the transformer T2 is connected to the VDC1 end, and the other end is connected to the drain of the MOS transistor Q3 and connected to the capacitor C6. The source of the MOS transistor Q3 is connected to the other end of the capacitor C6 and is grounded. One end of the W4 winding of the transformer T2 is connected to the positive electrode of the diode D4 and connected to the capacitor C7, and the other end is connected to the capacitor C8 and grounded. The cathode of the diode D4 is connected to the resistor R6, the other end of the capacitor C8 is connected to the Vout1 end in parallel, and the resistor R6 is connected to the other end of the capacitor C7.

4. The high-efficiency street light control device with non-contact automatic detection triggering according to claim 1 is characterized in that: The charging and stopping control circuit includes comparators U1A and U1B, wherein: The comparator U1A is connected to the positive terminal of the comparator U1B, the negative terminal of the light emitting diode LED1, the resistors R9, R13, and the capacitor C9; the positive terminal of the comparator U1A is connected to the first potentiometer R17; the negative terminal of the comparator U1A is connected to the resistor R7 and connected to the positive terminal of the diode D5; the resistor R7 is connected to the resistors R8, R10, R12, the positive terminal of the diode D6 and connected to the Vout1 terminal; the resistor R8 is connected to the positive terminal of the light emitting diode LED1; The comparator U1B is connected to the resistors R14 and R15 and the other end of the resistor R13, the negative terminal of the comparator U1B is connected to the resistor R11, the other end of the resistor R10 and the other end of the resistor R14, the resistor R11 is connected to the other end of the capacitor C9, the first potentiometer R17, the cathode of the diode D5, the cathode of the 15V lithium battery pack, the cathode of the light emitting diode LED2 and grounded, and the anode of the light emitting diode LED2 is connected to the other end of the resistor R9; The resistor R15 is connected to the base of the transistor VT1 and connected to the cathode of the diode D7, the anode of the diode D7 is connected to the cathode of the diode D6, the emitter of the transistor VT1 is connected to the other end of the resistor R12, the collector of the transistor VT1 is connected to the resistor R16, the anode of the 15V lithium battery pack is connected to the 15V end, and the resistor R16 is connected to the first potentiometer R17.

5. The high-efficiency street light control device with non-contact automatic detection triggering according to claim 1 is characterized in that: The light detection module includes a voltage comparator and a photoresistor sensor. The INA+ pin of the voltage comparator is connected to the capacitor C14, the resistor R19 and the pin 1 of the photoresistor sensor; The GND pin of the voltage comparator is connected to the other end of the capacitor C14, the 2nd pin of the photoresistor sensor and grounded; The OUTA pin of the voltage comparator is connected to the resistor R20 and connected to the P1.0 pin of the STM32 microcontroller. The resistor R20 is connected to the other end of the resistor R19 and connected to the VCC terminal.

6. The high-efficiency street light control device with non-contact automatic detection triggering according to claim 1 is characterized in that: The ultrasonic transmitting circuit includes a level conversion chip, The VCC pin of the level conversion chip is connected to the capacitor C18 and connected to the emitter of the transistor VT2, the capacitor C18 is grounded, the base of the transistor VT2 is connected to the resistor R21, the resistor R21 is connected to the POWKEY pin of the STM32 microcontroller, and the collector of the transistor VT2 is connected to the VCC terminal; The T1OUT and T2OUT pins of the level conversion chip are connected to the ultrasonic transmitter US_TR; The C1- pin of the level conversion chip is connected to the capacitor C19, and the C1+ pin of the level conversion chip is connected to the other end of the capacitor C19; The V- pin of the level conversion chip is connected to the capacitor C17, the V+ pin of the level conversion chip is connected to the capacitor C20, and the capacitor C20 is connected to the other end of the capacitor C17 and grounded; The C2- pin of the level conversion chip is connected to the capacitor C16, and the C2+ pin of the level conversion chip is connected to the other end of the capacitor C16; The T1IN pin of the level conversion chip is connected to the P2.1 pin of the STM32 microcontroller, and the T2IN pin of the level conversion chip is connected to the P2.0 pin of the STM32 microcontroller; The GND pin of the level conversion chip is grounded.

7. The high-efficiency street light control device triggered by non-contact automatic detection according to claim 6 is characterized in that: The ultrasonic amplification and shaping module includes two single-channel comparators and amplifiers U2A and U2B, wherein: The amplifier U2A is connected to the resistor R23 and the capacitor C22, the resistor R23 is connected to the negative terminal of the amplifier U2A and the resistor R22, the resistor R22 is connected to the capacitor C21, the capacitor C21 is connected to the ultrasonic transmitter US_TR, the positive terminal of the amplifier U2A is connected to the VREF pin of the STM32 microcontroller, the capacitor C22 is connected to the resistor R24 ​​and the resistor R27; The resistor R24 ​​is connected to the IN+ pin of the single comparator and connected to the resistor R26, the IN- pin of the single comparator is connected to the capacitor C23 and connected to the second potentiometer R25, the capacitor C23 is grounded, the second potentiometer R25 is connected to the VCC terminal, the OUT pin of the single comparator is connected to the other end of the resistor R26 and connected to the P1.1 pin of the STM32 microcontroller, the VCC pin of the single comparator is connected to the capacitor C24, and the GND pin of the single comparator is connected to the other end of the capacitor C24 and grounded; The resistor R27 is connected to the negative terminal of the amplifier U2B and connected to the resistor R28, the positive terminal of the amplifier U2B is connected to the VREF pin of the STM32 microcontroller, the amplifier U2B is connected to the capacitor C25 and connected to the other end of the resistor R28, and the capacitor C25 is connected to the resistor R29; The resistor R29 is connected to the IN+ pin of another single-channel comparator and connected to the resistor R31, the IN- pin of another single-channel comparator is connected to the capacitor C26 and connected to the third potentiometer R30, the capacitor C26 is grounded, the third potentiometer R30 is connected to the VCC end, the OUT pin of another single-channel comparator is connected to the other end of the resistor R31 and connected to the P1.2 pin of the STM32 microcontroller, the VCC pin of another single-channel comparator is connected to the capacitor C27, and the GND pin of another single-channel comparator is connected to the other end of the capacitor C27 and grounded.

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