Portable auxiliary correction device based on double-column type lifting machine tray and vehicle bearing point position

Abstract

The utility model discloses a portable auxiliary correction device based on a double-column type lifting machine tray and a vehicle bearing point position. The portable auxiliary correction device comprises a device shell, a main control circuit board and a 1600 mA / h lithium battery. The device shell comprises a main body part, a fixed part and a magnet; a fixed part of the device is provided with a magnet, the fixed part is installed at the bottom end of a lifting machine tray in a magnetic attraction mode, a main body part is installed on the side of the fixed part, and the main body part and the fixed part are fixed through a sliding rail. The main control circuit board comprises a device power conversion circuit, a device power control circuit and a device function driving circuit. Related maintenance personnel can use the device to accurately and quickly correct the position error between the center of a lifting machine tray and the center of an automobile bearing point when a vehicle is lifted, so that the situation that the vehicle is damaged and even casualties are caused due to lifting position deviation is avoided.

Description

Technical Field

[0001] This utility model relates to a convenient auxiliary correction device based on the position of a two-post lift pallet and the vehicle's load-bearing point, belonging to the technical field of automotive testing and repair equipment. Background Technology

[0002] With the rapid development of China's economy and the increasing strength of its economy, people's living standards are constantly improving, and the per capita ownership of cars is increasing, which has promoted the rapid development of the automotive aftermarket and repair industry.

[0003] A car lift is a device used to lift vehicles during automotive repair. Car lifts are widely used in routine vehicle maintenance and repair, and most repair shops are now equipped with them; they are essential equipment for automotive repair and maintenance. However, compared to other types of lifts, the two-post lift has a smaller contact area between the lift tray and the vehicle's chassis support points, and only four support points. Therefore, if the vehicle's support points do not make proper contact with the lift tray during lifting, it can cause the vehicle to tilt, creating a safety hazard. In severe cases, it can cause the vehicle to fall off, even resulting in injury or death. Utility Model Content

[0004] This utility model discloses a convenient auxiliary correction device based on the position of a two-post lift pallet and the vehicle's load-bearing point. Relevant maintenance personnel can use this device to accurately and quickly correct the positional error between the center of the lift pallet and the center of the vehicle's load-bearing point when lifting the vehicle, thereby avoiding damage to the vehicle or even personal injury caused by lifting position deviation.

[0005] The technical solution disclosed in this utility model is as follows:

[0006] A convenient auxiliary correction device based on the position of a two-post lift pallet and the vehicle's load-bearing point is characterized by: including a device housing, a main control circuit board, and a 1600mA / h lithium battery;

[0007] The 1600mA / h lithium battery consists of two 3.7V lithium batteries connected in series, outputting a voltage of 7.4V.

[0008] The device housing includes: a main body, a fixing part, and a magnet.

[0009] (like Figure 1 (As shown)

[0010] The device has a magnet installed in its fixed part, which is magnetically attached to the bottom of the lift tray. The main body is installed on the side of the fixed part, and the main body and the fixed part are fixed by a slide rail.

[0011] The main control circuit board includes: a device power conversion circuit, a device power control circuit, and a device function drive circuit.

[0012] The power conversion circuit of the device includes an A1117-3.3 voltage conversion chip (1), capacitor I (2), and capacitor II (3). (e.g.) Figure 2 (As shown)

[0013] The A1117-3.3 voltage conversion chip (1) includes three pins: VIN, GND, and VOUT.

[0014] The circuit starts from the positive 7.4V power supply and connects capacitor I (2) to the negative power supply in sequence. Another path is connected to the VIN pin of the A1117-3.3 voltage conversion chip (1). The GND pin of the A1117-3.3 voltage conversion chip (1) is connected to the negative power supply. The A1117-3.3 voltage conversion chip (1) converts the 7.4V voltage to 3.3V and outputs it through the VOUT pin to power the device power control circuit and the device function drive circuit. It is named VIN and is connected to capacitor II (3) to the negative power supply.

[0015] The power control circuit of the device includes: an HC-SR312 human infrared sensor (4), a fixed resistor R1 (5), an NPN transistor S8050Ⅰ (6), a fixed resistor R2 (7), an NPN transistor S8050Ⅱ (8), a fixed resistor R3 (9), an NPN transistor S8050Ⅲ (10), a rectifier diode Ⅰ (11), and a 3V relay (12). (e.g.) Figure 3 (As shown)

[0016] The HC-SR312 human infrared sensor (4) includes three pins: VCC, OUT, and GND.

[0017] The NPN transistor S8050 includes three pins: base, collector, and emitter.

[0018] The 3V relay (12) includes five pins: input, normally closed, normally open, coil input, and coil output.

[0019] VIN is the general term for the power supply of the device's power control circuit, and its voltage is 3.3V.

[0020] Among them, OUT3.3V is the general term for the power supply of the device's functional drive circuit, and the voltage is 3.3V.

[0021] This part of the circuit starts from the voltage VIN output by the VOUT pin of the A1117-3.3 voltage conversion chip (1), and connects to the VCC pin of the HC-SR312 human infrared sensor (4), the collector of the NPN transistor S8050Ⅰ (6), the input pin of the 3V relay (12), the coil input pin of the 3V relay (12), and the negative terminal of the rectifier diode Ⅰ (11); the normally open pin of the 3V relay (12) is connected to OUT3.3V.

[0022] The OUT pin of the HC-SR312 human infrared sensor (4) is connected in sequence to the base of the NPN transistor S8050Ⅰ (6) via a fixed resistor R1 (5); the GND pin of the HC-SR312 human infrared sensor (4) is connected to the negative terminal of the power supply; the emitter of the NPN transistor S8050Ⅰ (6) is connected in sequence to the base of the NPN transistor S8050Ⅱ (8) via a fixed resistor R2 (7); the emitter of the NPN transistor S8050Ⅱ (8) is connected to the negative terminal of the power supply. The coil output of the 3V relay (12) is connected to the positive terminal of the rectifier diode Ⅰ (11), the collector of the NPN transistor S8050Ⅱ (8), and the collector of the NPN transistor S8050Ⅲ (10), respectively. The base of the NPN transistor S8050Ⅲ(10) is connected to the fixed resistor R3(9) to the PA12 pin of the STM32F103c8t6 chip (13); the emitter of the NPN transistor S8050Ⅲ(10) is connected to the negative terminal of the power supply.

[0023] The device's functional drive circuit includes: an STM32F103c8t6 chip (13), an LED light (14), an MG90 servo motor (15), a crosshair light (16), an HC-SR04 ultrasonic module (17), a mode switch (18), a buzzer (19), and an NPN transistor S8050Ⅳ (20).

[0024] (like Figure 4 (As shown)

[0025] The STM32F103c8t6 chip (13) uses eight pins: PA4, PA12, PA6, PA5, PA9, PA8, PA10, and PB12.

[0026] The LED lighting lamp (14) includes two pins: a positive pin and a negative pin.

[0027] The MG90 servo (15) includes three pins: VCC, OUT, and GND.

[0028] The crosshair light (16) includes two pins: VCC and GND.

[0029] The HC-SR04 ultrasonic module (17) includes four pins: VCC, TRIG1, ECHO1, and GND.

[0030] The buzzer (19) includes two pins: a positive pin and a negative pin.

[0031] This part of the circuit uses the STM32F103c8t6 chip (13) as the main control chip, and OUT3.3V is connected to the STM32F103c8t6 chip (13).

[0032] The STM32F103c8t6 chip (13) is connected to the negative terminal of the LED lighting lamp (14) through the PA4 pin; the positive terminal of the LED lighting lamp (14) is connected to OUT3.3V.

[0033] The STM32F103c8t6 chip (13) is connected to the OUT pin of the MG90 servo (15) via the PA6 pin; the VCC pin of the MG90 servo (15) is connected to the OUT3.3V pin, and the GND pin is connected to the negative terminal of the power supply.

[0034] The STM32F103c8t6 chip (13) is connected to the GND pin of the crosshair lamp (16) via the PA5 pin; the VCC pin of the crosshair lamp (16) is connected to OUT3.3V;

[0035] The STM32F103c8t6 chip (13) is connected to the TRIG1 and ECHO1 pins of the HC-SR04 ultrasonic module (17) via PA9 and PA8 pins respectively; the VCC pin of the HC-SR04 ultrasonic module (17) is connected to OUT3.3V, and the GND pin is connected to the negative terminal of the power supply.

[0036] The STM32F103c8t6 chip (13) is connected to the mode switching switch (18) to the negative terminal of the power supply via PA10;

[0037] The STM32F103c8t6 chip (13) is connected to the base of the NPN transistor S8050Ⅳ (20) via PB12; the emitter of the NPN transistor S8050Ⅳ (20) is connected to the negative terminal of the power supply; the collector of the NPN transistor S8050Ⅳ (20) is connected to the negative terminal of the buzzer (19); and the positive terminal of the buzzer (19) is connected to OUT3.3V.

[0038] The advantages of this practical device are:

[0039] 1. Convenience: The main body of the device is fixed to the mounting part by a sliding rail, allowing for plug-and-play operation; the mounting part is equipped with magnets, which can be directly attached to the bottom of the lifting platform tray, thus enabling convenient deployment and disassembly of the device.

[0040] 2. Auxiliary lighting. This device is equipped with LED lights (14), which solves the problem of weak lighting at the bottom of the vehicle. This improves the user's work efficiency.

[0041] 3. No external power supply required. The device is equipped with a high-capacity 1600mAh lithium battery, giving it exceptional battery life. Furthermore, the use of a lithium battery eliminates the need for an external power source, significantly improving the device's convenience.

[0042] 4. Automatic Sensing Start-up and Sleep Mode. The device is equipped with an HC-SR312 human infrared sensor (4) and an HC-SR04 ultrasonic module (17). When the HC-SR312 human infrared sensor (4) senses a person approaching, it drives the input pin and normally open pin of the 3V relay (12) to connect, supplying power to the device's functional drive circuit, thereby starting the STM32F103c8t6 chip (13) to achieve sensing start-up. When there are no people around, the HC-SR04 ultrasonic module (17) monitors whether it is under the car chassis. If the distance data between the lift pallet and the vehicle's load-bearing point collected by the HC-SR04 ultrasonic module (17) is not within the set range for 30 seconds, it indicates that the vehicle is not being lifted. Then, the input pin and normally open pin of the 3V relay (12) are disconnected, thereby de-energizing the device's functional drive circuit and entering sleep mode. This function greatly reduces the device's power consumption when the vehicle is not being lifted, and improves the device's battery life.

[0043] 5. Intelligent lane marking angle adjustment. The device is equipped with an MG90 servo motor (15). The STM32F103c8t6 chip (13) can monitor the distance data between the car pallet and the vehicle's load-bearing point through the HC-SR04 ultrasonic module (17), and input the data into the program for calculation to calculate the angle data. This controls the rotation angle of the MG90 servo motor (15) to adjust the position of the crosshair emitted by the crosshair light (16) (the crosshair light (16) is fixed on the shaft of the MG90 servo motor (15)). The realization of this function makes the device suitable for vehicles with different chassis heights, thus expanding the range of applications of the device.

[0044] 6. Visual Position Calibration. The device is equipped with a crosshair light (16), which emits a red crosshair. Under the control of the MG90 servo motor (15), the center point of the crosshair illuminating the vehicle chassis is positioned directly above the center point of the lift pallet. Then, by aligning the center point of the crosshair with the center point of the vehicle's load-bearing points, precise alignment between the center point of the pallet and the center point of the vehicle chassis's load-bearing points can be achieved. (e.g.) Figure 5 (As shown) This optimizes the accuracy and efficiency of the lift when raising vehicles. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the device's outer casing;

[0046] Figure 1-1 A schematic diagram of the main body;

[0047] Figure 1-2 This is a schematic diagram of the fixed part;

[0048] Figure 2 This is the schematic diagram of the power conversion circuit for the device.

[0049] Figure 3 This is the schematic diagram of the device's power control circuit.

[0050] Figure 4 This is the schematic diagram of the device's functional drive circuit.

[0051] Figure 5 This is a schematic diagram illustrating the implementation principle of the device;

[0052] Among them: A1117-3.3 voltage conversion chip (1), capacitor I (2), capacitor II (3), HC-SR312 human infrared sensor (4), fixed resistor R1 (5), NPN transistor S8050 I (6), fixed resistor R2 (7), NPN transistor S8050 II (8), fixed resistor R3 (9), NPN transistor S8050 III (10), rectifier diode I (11), 3V relay (12), STM32F103c8t6 chip (13), LED lighting lamp (14), MG90 servo motor (15), cross marker light (16), HC-SR04 ultrasonic module (17), mode switching switch (18), buzzer (19), NPN transistor S8050 IV (20); main body 21; fixed part 22; magnet 23; lifting tray 24.

[0053] Note: The negative terminal of the power supply is the common ground terminal of the device. All references to the negative terminal of the power supply throughout the text have the same meaning. Detailed Implementation

[0054] A convenient auxiliary correction device based on the position of a two-post lift pallet and the vehicle's load-bearing point includes a device housing, a main control circuit board, and a 1600mA / h lithium battery.

[0055] The device housing includes: a main body, a fixing part, and a magnet;

[0056] The 1600mA / h lithium battery consists of two 3.7V lithium batteries connected in series, outputting a voltage of 7.4V.

[0057] The main control circuit board and 1600mA / h lithium battery are located in the main body of the device housing and adopt a sliding rail design. The main body and the fixed part can be used by simply plugging them in. The magnet is installed in the fixed part and can be attached to the bottom of the lifting platform tray.

[0058] The main control circuit board includes a device power conversion circuit, a device power control circuit, and a device function drive circuit.

[0059] The power conversion circuit of the device is used to convert the 7.4V power supply voltage into a 3.3V voltage to power the device power control circuit and the device function drive circuit. The principle of the circuit is as follows: the battery voltage is 7.4V, which is stepped down by the A1117-3.3 voltage conversion chip (1) and outputs a 3.3V regulated DC voltage from the VOUT pin, named VIN. The capacitors I (2) and II (3) connected in parallel across the A1117-3.3 voltage conversion chip (1) serve as filters.

[0060] The power control circuit of the device is used to control the 3V relay (12) to engage when a person approaches, i.e., when a change in the infrared signal is detected, to power the device's functional drive circuit. The principle of this circuit is as follows: When the HC-SR312 human infrared sensor (4) is working, it can monitor the changes in the infrared signal within its own range in real time. When the HC-SR312 human infrared sensor (4) detects a change in the infrared signal within its range, i.e., detects a person nearby, the OUT pin of the HC-SR312 human infrared sensor (4) will output a 3.3V high level, which is divided by the fixed resistor R1 (5) and applied to the base of the NPN transistor S8050Ⅰ (6). At this time, the NPN transistor S8050Ⅰ (6) is in the conducting state, and the collector and emitter of the NPN transistor S8050Ⅰ (6) are connected. In this case, VIN can be applied to the base of NPN transistor S8050Ⅱ (8) through the voltage divider of NPN transistor S8050Ⅰ (6) and fixed resistor R2 (7). At this time, NPN transistor S8050Ⅱ (8) is in the conducting state, and the collector and emitter of NPN transistor S8050Ⅱ (8) are connected. In this case, the current can start from VIN, pass through the input pin of 3V relay (12) coil, the output pin of 3V relay (12) coil, and NPN transistor S8050Ⅱ (8) to the negative terminal of the power supply, thereby controlling the operation of 3V relay (12). Connect the input pin of the 3V relay (12) to the normally open pin. Since the input pin and normally open pin are disconnected when the 3V relay (12) is not powered on, OUT3.3V is 0V. Therefore, after the input pin of the 3V relay (12) is connected to the normally open pin, OUT3.3V becomes 3.3V, thus powering the device function drive circuit. The device function drive circuit is activated. At this time, the STM32F103c8t6 chip (13) controls its PA12 pin to output a 3.3V high level. Through the voltage division of the fixed resistor R3 (9), it acts on the base of the NPN transistor S8050Ⅲ (10), making the NPN transistor S8050Ⅲ (10) conduct. The collector and emitter of the NPN transistor S8050Ⅲ (10) are connected. This prevents the device function drive circuit from being powered off when the NPN transistor S8050Ⅱ (8) is cut off. At this time, the device function drive circuit starts to run.

[0061] The device's functional drive circuit is used to implement the auxiliary correction function of the position of the dual-column lift pallet and the vehicle's load-bearing point. The circuit principle is as follows: When the device's functional drive circuit starts running, the STM32F103c8t6 chip (13) controls its own PB12 pin to output a 3.3V high level, which is used to supply power to the base of the NPN transistor S8050Ⅳ (20), thereby turning on the NPN transistor S8050Ⅳ (20). The collector and emitter of the NPN transistor S8050Ⅳ (20) are connected. At this time, the current flows from OUT3.3V through the buzzer (19) and the NPN transistor S8050Ⅳ (20) to the negative terminal of the power supply, and the buzzer (19) starts to respond. This indicates that the device has started running and entered the working preparation state.

[0062] When the device is in the working standby state, the STM32F103c8t6 chip (13) will control the HC-SR04 ultrasonic module (17) to emit ultrasonic signals at a frequency of 100ms / time to detect the distance between the lift pallet and the vehicle's load-bearing point; the cross marker light (16), MG90 servo motor (15), LED lighting (14), buzzer (19) and other related modules are not yet working. At this time, the STM32F103c8t6 chip (13) starts timing. If there are no people around (HC-SR312 human infrared sensor (4) OUT pin outputs 0V low level, thus causing NPN transistor S8050Ⅰ (6) to enter the cut-off state, because NPN transistor S8050Ⅰ (6) enters the cut-off state, NPN transistor S8050Ⅱ (8) will also enter the cut-off state, then the circuit from VIN through 3V relay (12), coil input, 3V relay (12) coil output, NPN transistor S8050Ⅱ (8) to the negative terminal of the power supply is broken.) and the distance data between the lifting pallet and the vehicle load point detected within 30 seconds is not within the set range, it is determined that no one is performing vehicle lifting work, and the STM32F103c8t6 chip (13) starts timing. 3) Control its own PA12 pin to output 0V low level, so that the NPN transistor S8050Ⅲ (10) is cut off, thereby de-energizing the 3V relay (12). The input pin of the 3V relay (12) is disconnected from the normally open pin, thereby de-energizing the device's functional drive circuit and entering sleep mode. When the distance data between the lifting pallet and the load point is detected to be within the set range, the device enters the working state. The STM32F103c8t6 chip (13) takes the detected distance data into the program to calculate the deflection angle, and controls the rotation angle of the MG90 servo (15) through its own PA6 pin (because the crosshair light (16) is fixed on the MG90 servo (15) shaft, the position of the crosshair light (16) will change with the rotation of the MG90 servo (15). At the same time, the STM32F103c8t6 chip (13) will control its PA4 pin to output a low level of 0V. At this time, the current flows from OUT3.3V through the LED lighting lamp (14) and the PA4 pin of the STM32F103c8t6 chip (13) to the negative terminal of the power supply, thereby controlling the LED lighting lamp (14) to work and controlling the PA5 pin to output a low level of 0V. At this time, the current flows from OUT3.3V through the cross marker lamp (16) and the PA5 pin of the STM32F103c8t6 chip (13) to the negative terminal of the power supply, thereby activating the cross marker lamp (16).

[0063] The STM32F103c8t6 chip (13) monitors the potential change of its PA10 pin in real time for device mode switching. The device is divided into calibration mode and working mode. When the mode switching switch (18) is pressed, the PA10 pin will detect a low level of 0V. When the low level signal exceeds 2s, it will switch its own mode.

[0064] The method of using this utility model is as follows:

[0065] 1. The fixing part of the device is magnetically attached to the bottom of the lifting platform tray, and the main body of the device is attached to the side of the fixing part.

[0066] 2. Press and hold the mode switch (18) for more than 2 seconds to put the device into calibration mode. The user shall calibrate his / her own position according to the cross line projected by the cross line light (16) in this mode (the center point of the cross line projected by the cross line light (16) is aligned with the center of the lift pallet) to ensure the accuracy of the device. After calibration is completed, press and hold the mode switch (18) again for more than 2 seconds to switch the device mode to working mode.

[0067] 3. Push the lift tray with the device deployed under the vehicle. The device will automatically activate upon sensing its position. Simultaneously, it will automatically detect whether the device is under the vehicle and adjust the angle of the crosshair launcher based on the detected load points on the vehicle chassis and the height of the lift tray, ensuring the center point of the crosshair is directly above the center point of the lift tray. Precise alignment between the center point of the lift tray and the center point of the vehicle chassis load points is achieved simply by aligning the center point of the crosshair with the center point of the vehicle load points. (e.g.) Figure 5 (As shown)

[0068] 4. After the two-post lift is finished, simply remove the lift tray with the device deployed from under the vehicle. If there are no personnel around and the distance data detected within 30 seconds is not within the set range, the device determines that no personnel are performing vehicle maintenance work, and then the device will be powered off and enter sleep mode.

[0069] 5. Users can decide whether to remove the device according to their own situation. If removal is desired, simply slide the main body of the device away from the fixed part.

[0070] A convenient auxiliary correction device based on the position of a two-post lift pallet and the vehicle's support point has been developed and applied in vehicle lifting operations. Users can use this device to quickly and accurately reach the support point on the car chassis when lifting the vehicle, improving work efficiency while avoiding damage to the vehicle or even personal injury caused by lifting position deviation.

Claims

1. A convenient auxiliary correction device based on the position of a two-post lift pallet and the vehicle's load-bearing point, characterized in that: Includes the device casing, main control circuit board, and 1600mA / h lithium battery; The 1600mA / h lithium battery consists of two 3.7V lithium batteries connected in series, outputting a voltage of 7.4V. The device housing includes: a main body, a fixing part, and a magnet; The device has a magnet installed in its fixed part, which is magnetically attached to the bottom of the lift tray. The main body is installed on the side of the fixed part, and the main body and the fixed part are fixed by a slide rail. The main control circuit board includes: a device power conversion circuit, a device power control circuit, and a device function drive circuit. The power conversion circuit of the device includes an A1117-3.3 voltage conversion chip (1), capacitor I (2), and capacitor II (3); the circuit starts from the positive terminal of the power supply 7.4V and connects capacitor I (2) to the negative terminal of the power supply in sequence, and another path is connected to the VIN pin of the A1117-3.3 voltage conversion chip (1); the GND pin of the A1117-3.3 voltage conversion chip (1) is connected to the negative terminal of the power supply; the A1117-3.3 voltage conversion chip (1) converts the 7.4V voltage to 3.3V and outputs it through the VOUT pin to power the device power control circuit and the device function drive circuit, named VIN, and connects capacitor II (3) to the negative terminal of the power supply; The power control circuit of the device includes: HC-SR312 human infrared sensor (4), fixed resistor R1 (5), NPN transistor S8050Ⅰ (6), fixed resistor R2 (7), NPN transistor S8050Ⅱ (8), fixed resistor R3 (9), NPN transistor S8050Ⅲ (10), rectifier diode Ⅰ (11), and 3V relay (12); this part of the circuit starts from the voltage VIN output by the VOUT pin of the A1117-3.3 voltage conversion chip (1) and is connected to the VCC pin of the HC-SR312 human infrared sensor (4), the collector of the NPN transistor S8050Ⅰ (6), the input pin of the 3V relay (12), the coil input pin of the 3V relay (12), and the negative terminal of the rectifier diode Ⅰ (11); the normally open pin of the 3V relay (12) is connected to OUT3.3V; the HC-SR312 human infrared sensor (4) The OUT pin is connected in sequence to the base of the NPN transistor S8050Ⅰ (6) via a fixed resistor R1 (5); the GND pin of the HC-SR312 human infrared sensor (4) is connected to the negative terminal of the power supply; the emitter of the NPN transistor S8050Ⅰ (6) is connected in sequence to the base of the NPN transistor S8050Ⅱ (8) via a fixed resistor R2 (7); the emitter of the NPN transistor S8050Ⅱ (8) is connected to the negative terminal of the power supply, 3V. The coil output of relay (12) is connected to the positive terminal of rectifier diode I (11), the collector of NPN transistor S8050Ⅱ (8), and the collector of NPN transistor S8050Ⅲ (10), respectively. The base of NPN transistor S8050Ⅲ (10) is connected to the fixed resistor R3 (9) to the PA12 pin of STM32F103c8t6 chip (13). The emitter of NPN transistor S8050Ⅲ (10) is connected to the negative terminal of the power supply. The device's functional drive circuit includes: an STM32F103c8t6 chip (13), an LED light (14), an MG90 servo motor (15), a crosshair light (16), an HC-SR04 ultrasonic module (17), a mode switch (18), a buzzer (19), and an NPN transistor S8050Ⅳ (20); This circuit uses the STM32F103c8t6 chip (13) as the main control chip, with OUT3.3V connected to the STM32F103c8t6 chip (13); the STM32F103c8t6 chip (13) is connected to the negative terminal of the LED lighting lamp (14) through the PA4 pin; the positive terminal of the LED lighting lamp (14) is connected to OUT3.3V; the STM32F103c8t6 chip (13) is connected to the OUT pin of the MG90 servo (15) through the PA6 pin; the VCC pin of the MG90 servo (15) is connected to OUT3.3V, and the GND pin is connected to the negative terminal of the power supply; the STM32F103c8t6 chip (13) is connected to the GND pin of the crosshair light (16) through the PA5 pin; the VCC pin of the crosshair light (16) is connected to OUT3.3V; the ST The M32F103c8t6 chip (13) is connected to the TRIG1 and ECHO1 pins of the HC-SR04 ultrasonic module (17) via PA9 and PA8 pins respectively; the VCC pin of the HC-SR04 ultrasonic module (17) is connected to OUT3.3V, and the GND pin is connected to the negative terminal of the power supply; the STM32F103c8t6 chip (13) is connected to the mode switching switch (18) to the negative terminal of the power supply via PA10; the STM32F103c8t6 chip (13) is connected to the base of the NPN transistor S8050Ⅳ (20) via PB12; the emitter of the NPN transistor S8050Ⅳ (20) is connected to the negative terminal of the power supply; the collector of the NPN transistor S8050Ⅳ (20) is connected to the negative terminal of the buzzer (19); the positive terminal of the buzzer (19) is connected to OUT3.3V.

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