Intelligent anti-pinch system for vehicle door

Abstract

The utility model provides an intelligent anti-pinch system for a vehicle door, and belongs to the technical field of intelligent anti-pinch. The intelligent anti-pinch system for the vehicle door comprises a vehicle door state detection module, a control module, an infrared emission module and a photoelectric conversion module, the vehicle door state detection module is connected with the control module and used for detecting the opening and closing state of a vehicle door. The infrared emission module is connected with the control module and is used for emitting an infrared light signal; the infrared emission module comprises an emission lens and a deflection device; an infrared light signal emitted by the infrared emission module is converted into infrared rays in a specific direction after passing through the emission lens and the deflection device; the photoelectric conversion module is connected with the control module, the photoelectric conversion module is used for receiving the infrared light signal emitted by the infrared emission module, and the photoelectric conversion module comprises a plurality of photoelectric sensors. The problem that a traditional vehicle door intelligent anti-pinch system is high in false alarm rate can be solved.

Description

Technical Field

[0001] The present disclosure relates to the field of intelligent anti-pinch technology, and in particular to an intelligent anti-pinch system for vehicle doors. Background Art

[0002] With the rapid development of the automobile industry, automobile safety issues have become the focus of public attention. As an important part of the vehicle, the safety and convenience of the door directly affect the passenger's riding experience. During the closing process of the door, due to improper operation or negligence, it is easy to pinch the passengers or the items in the car, which will not only cause physical harm to the passengers, but also may cause property losses.

[0003] At present, there are some door anti-pinch systems on the market, which mainly realize the anti-pinch function through pressure sensing technology. However, these systems still have some shortcomings in practical applications, such as slow response speed and high false alarm rate, which bring great safety risks to passengers. Utility Model Content

[0004] The disclosed embodiment provides a vehicle door intelligent anti-pinch system to solve the problem of high false alarm rate of traditional vehicle door intelligent anti-pinch systems.

[0005] The embodiment of the present disclosure provides a vehicle door intelligent anti-pinch system, including a vehicle door state detection module, a control module, an infrared emission module and a photoelectric conversion module;

[0006] The door status detection module is connected to the control module, and the door status detection module is used to detect the switch status of the door;

[0007] The infrared transmitting module is connected to the control module, and the infrared transmitting module is used to emit an infrared light signal;

[0008] The infrared emission module includes an emission lens and a deflection device;

[0009] The infrared light signal emitted by the infrared emission module will be converted into infrared light in a specific direction after passing through the emission lens and the deflection device;

[0010] The photoelectric conversion module is connected to the control module, and is used to receive the infrared light signal emitted by the infrared emission module. The photoelectric conversion module includes a plurality of photoelectric sensors.

[0011] In an exemplary embodiment of the present disclosure, a filtering module is also included;

[0012] The photoelectric conversion module is connected to the control module through the filter module.

[0013] In an exemplary embodiment of the present disclosure, an alarm module is also included;

[0014] The alarm module is connected to the control module, and is used to send out an alarm signal.

[0015] In an exemplary embodiment of the present disclosure, the infrared transmitting module includes a switch circuit and an infrared transmitting circuit;

[0016] The control end of the switch circuit is connected to the control module, the first end of the switch circuit is connected to the infrared transmitting circuit, and the second end of the switch circuit is grounded;

[0017] The infrared transmitting circuit includes a driver U4, a diode D2, an inductor L1, a capacitor C7 and an infrared transmitting tube LED1;

[0018] The control end of the driver U4 is connected to the first end of the switch circuit, the output end of the driver U4 is connected to the cathode of the diode D2, the anode of the diode D2 is grounded, the output end of the driver U4 is connected to the first end of the inductor L1, the second end of the inductor L1 is grounded through the capacitor C7, the second end of the inductor L1 is connected to the anode of the infrared emitting tube LED1, and the cathode of the infrared emitting tube LED1 is grounded.

[0019] In an exemplary embodiment of the present disclosure, the switch circuit includes a transistor Q5;

[0020] The base of the transistor Q5 serves as the control end of the switch circuit, the collector of the transistor Q5 serves as the first end of the switch circuit, and the emitter of the transistor Q5 serves as the second end of the switch circuit.

[0021] In an exemplary embodiment of the present disclosure, the infrared emitting circuit further includes a resistor R10 and a resistor R11;

[0022] The first end of the resistor R10 is connected to the cathode of the infrared emitting tube LED1 , the second end of the resistor R10 is grounded through the resistor R11 , and the second end of the resistor R10 is connected to the feedback end of the driver U4 .

[0023] In an exemplary embodiment of the present disclosure, the photoelectric conversion module includes a resistor R3 and multiple photoelectric conversion circuits with the same circuit structure, and the multiple photoelectric conversion circuits with the same circuit structure are connected in parallel;

[0024] Any photoelectric conversion circuit includes a switch tube Q1;

[0025] The first end of the switch tube Q1 is connected to the VCC power supply, the control end of the switch tube Q1 is connected to the first end of any photoelectric sensor, the second end of any photoelectric sensor is grounded, the second end of the switch tube Q1 is connected to the first end of the resistor R3, the second end of the resistor R3 is grounded, and the first end of the resistor R3 is connected to the control module.

[0026] In an exemplary embodiment of the present disclosure, the photoelectric conversion module further includes an isolation amplifier circuit;

[0027] The isolation amplifier circuit includes an optical coupler D1, a transistor Q4, a resistor R7, an operational amplifier U3, a resistor R5 and a resistor R15;

[0028] The first input end of the optocoupler D1 is connected to the first end of the resistor R3, the second input end of the optocoupler D1 is grounded, the first output end of the optocoupler D1 is connected to the VDD power supply, the second output end of the optocoupler D1 is connected to the base of the transistor Q4, the collector of the transistor Q4 is connected to the VDD power supply, the emitter of the transistor Q4 is grounded through the resistor R7, the emitter of the transistor Q4 is connected to the non-inverting input end of the operational amplifier U3, the inverting input end of the operational amplifier U3 is grounded through the resistor R15, the output end of the operational amplifier U3 is connected to the inverting input end of the operational amplifier U3 through the resistor R5, and the output end of the operational amplifier U3 is connected to the control module.

[0029] The beneficial effects of the intelligent anti-pinch system for vehicle doors provided by the embodiments of the present disclosure are as follows:

[0030] First, the disclosed embodiment can monitor the door's open and closed state in real time and accurately through the close connection between the door state detection module and the control module, providing a higher level of safety for passengers. Once the door is detected to be open, the disclosed embodiment can quickly activate the anti-pinch mechanism, effectively preventing pinching accidents caused by accidental door closing.

[0031] Secondly, the coordinated use of the infrared transmitting module and the photoelectric conversion module enables the system to accurately sense obstacles during the door closing process. The infrared light signal emitted by the infrared transmitting module is adjusted by the transmitting lens and the deflection device to form an infrared beam in a specific direction, covering the potential dangerous area of ​​the door closing. When an obstacle blocks part of the infrared beam, the photoelectric conversion module can quickly sense and convert it into a change in the electrical signal, providing an accurate judgment basis for the control module, thereby avoiding the risk of pinching passengers or objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] Figure 1 is a structural schematic diagram of a vehicle door intelligent anti-pinch system provided by an embodiment of the present disclosure;

[0034] Figure 2 is a schematic diagram of an infrared transmitting module provided in an embodiment of the present disclosure;

[0035] Figure 3 is a circuit diagram of an infrared transmitting module provided in an embodiment of the present disclosure;

[0036] Figure 4 is a circuit diagram of a photoelectric conversion module provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] In order to enable people in the technical field to better understand the present solution, the technical solution in the embodiment of the present solution will be clearly described below in conjunction with the drawings in the embodiment of the present solution. Obviously, the described embodiment is an embodiment of a part of the present solution, not all of the embodiments. Based on the embodiments in the present solution, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present solution.

[0038] The term "including" and any other variations in the specification and claims of this solution and the above drawings mean "including but not limited to", and is intended to cover non-exclusive inclusions and is not limited to the examples listed in the text. In addition, the terms "first" and "second" are used to distinguish different objects, not to describe a specific order.

[0039] The following is a detailed description of the implementation of the present disclosure in conjunction with the specific drawings:

[0040] Figure 1 This is a schematic diagram of the structure of a vehicle door intelligent anti-pinch system provided by an embodiment of the present disclosure. Figure 1The intelligent anti-pinch system for vehicle doors includes a vehicle door state detection module 101, a control module 102, an infrared transmitting module 104 and a photoelectric conversion module 105; the vehicle door state detection module 101 is connected to the control module 102, and the vehicle door state detection module 101 is used to detect the switch state of the vehicle door; the infrared transmitting module 104 is connected to the control module 102, and the infrared transmitting module 104 is used to emit an infrared light signal; the infrared transmitting module 104 includes a transmitting lens 108 and a deflection device 109; the infrared light signal emitted by the infrared transmitting module 104 will be converted into infrared light in a specific direction after passing through the transmitting lens 108 and the deflection device 109; the photoelectric conversion module 105 is connected to the control module 102, and the photoelectric conversion module 105 is used to receive the infrared light signal emitted by the infrared transmitting module 104, and the photoelectric conversion module 105 includes multiple photoelectric sensors.

[0041] In this embodiment, the door state detection module 101 is connected to the control module 102, and the door state detection module 101 is used to monitor the door open and close state in real time. When the door state is detected to be open, the door state detection module 101 can send a signal to the control module 102, and the anti-pinch system can be started at this time.

[0042] The control module 102 is used to receive the signal from the door state detection module 101, and control the working state of the infrared emission module 104 according to the signal. When receiving the signal that the door is open, the control module 102 will start the infrared emission module 104 to emit an infrared light signal. The infrared emission module 104 includes an emission lens 108 and a deflection device 109, which are connected to the control module 102. The infrared emission module 104 can be set on the side of the door,

[0043] When the control module 102 issues an instruction, the infrared transmitting module 104 will emit an infrared light signal. These infrared light signals will form an infrared beam 110 in a specific direction after being focused by the transmitting lens 108 and adjusted by the deflection device 109 (these infrared beams 110 will cover the potential pinching area of ​​the closed door and provide a light source for anti-pinch detection). In this embodiment, the infrared beam 110 can be emitted on the pillar of the car. The photoelectric conversion module 105 is also connected to the control module 102. The photoelectric conversion module 105 includes a plurality of photoelectric sensors. The plurality of photoelectric sensors can be arranged on the pillars of the car to receive the infrared light signal emitted by the infrared transmitting module 104. When obstacles (such as fingers, clothing, etc.) are encountered during the closing process of the door, these obstacles will block part of the infrared beam 110, causing part of the photoelectric sensors to be unable to receive the infrared light signal, and the light signal received by the photoelectric conversion module 105 will change. As a result, the electrical signal output by the photoelectric conversion module 105 will change, and the changed electrical signal will be sent to the control module 102. When the electrical signal received by the control module 102 changes, it will be determined that the door has clamped an obstacle, and immediately send a stop or reverse command to the door motor to avoid pinching passengers or objects.

[0044] It can be concluded from the above that, firstly, this embodiment can monitor the door's open and closed state in real time and accurately through the close connection between the door state detection module 101 and the control module 102, thus providing a higher level of safety for passengers. Once the door is detected to be in an open state, this embodiment can quickly activate the anti-pinch mechanism, effectively preventing pinching accidents caused by accidental closing of the door.

[0045] Secondly, the coordinated use of the infrared emitting module 104 and the photoelectric conversion module 105 enables the system to accurately sense obstacles during the door closing process. The infrared light signal emitted by the infrared emitting module 104 is adjusted by the emitting lens 108 and the deflection device 109 to form an infrared beam 110 in a specific direction, covering the potential dangerous area of ​​the door closing. When an obstacle blocks part of the infrared beam 110, the photoelectric conversion module 105 can quickly sense and convert it into a change in the electrical signal, providing an accurate judgment basis for the control module 102, thereby avoiding the risk of pinching passengers or objects.

[0046] In a disclosed embodiment, a filtering module 103 is further included; the photoelectric conversion module 105 is connected to the control module 102 via the filtering module 103 .

[0047] In this embodiment, a filter module 103 is added. The filter module 103 is designed to filter noise and interference in the electrical signal output by the photoelectric conversion module 105 to ensure that the control module 102 receives accurate and clear data, thereby more accurately determining whether the door has caught an obstacle.

[0048] The photoelectric sensor in the photoelectric conversion module 105 receives the infrared light signal. When the door encounters an obstacle during closing, part of the infrared beam 110 is blocked, causing the light signal received by the photoelectric sensor to change. The photoelectric conversion module 105 converts this change into an electrical signal output. Before the electrical signal is transmitted to the control module 102, it first passes through the filter module 103. The filter module 103 can filter out the noise and interference in the electrical signal to ensure that the control module 102 receives a clear and accurate signal. The control module 102 determines whether the door is clamped by an obstacle based on the change in the filtered electrical signal.

[0049] In a disclosed embodiment, an alarm module 106 is also included; the alarm module 106 is connected to the control module 102, and the alarm module 106 is used to send an alarm signal.

[0050] In this embodiment, an alarm module 106 is added. The alarm module 106 is connected to the control module 102. When the control module 102 determines that the door has caught an obstacle, the alarm module 106 will be immediately triggered to send an alarm signal to further ensure the safety of passengers and remind them to take appropriate measures.

[0051] Exemplary: Figure 2 As shown, taking a smart electric car as an example, when a passenger opens the door and prepares to get on the car, the door state detection module 101 detects that the door is open and sends a signal to the control module 102. The control module 102 then starts the infrared emission module 104 (infrared emitter 107) to emit an infrared light signal, which is converted into an infrared beam 110 after passing through the emission lens 108 and the deflection device 109. The infrared beam 110 is projected onto the B-pillar of the car and received by the photoelectric conversion module 105 installed on the B-pillar.

[0052] When the passenger closes the door, if the finger or other obstacles are accidentally caught in the door gap, they will block part of the infrared beam 110. The photoelectric sensor 111 in the photoelectric conversion module 105 senses the change of the light signal and converts it into an electrical signal and outputs it to the control module 102. After processing, the control module 102 determines that the door has caught an obstacle. In addition to sending a stop command to the door motor, it also triggers the alarm module 106.

[0053] The alarm module 106 emits a loud and obvious alarm sound and displays a corresponding alarm message on the car dashboard. This alarm sound and message will immediately attract the attention of passengers and surrounding people, allowing them to realize the risk of being pinched and take corresponding measures, such as readjusting the closing position of the car door or checking the pinched obstacle.

[0054] This embodiment can greatly improve the safety and reliability of the car, and provide passengers with a safer and more comfortable riding experience.

[0055] like Figure 3 As shown, in a disclosed embodiment, the infrared transmitting module 104 includes a switching circuit and an infrared transmitting circuit; the control end of the switching circuit is connected to the control module 102, the first end of the switching circuit is connected to the infrared transmitting circuit, and the second end of the switching circuit is grounded; the infrared transmitting circuit includes a driver U4, a diode D2, an inductor L1, a capacitor C7 and an infrared transmitting tube LED1; the control end of the driver U4 is connected to the first end of the switching circuit, the output end of the driver U4 is connected to the cathode of the diode D2, the anode of the diode D2 is grounded, the output end of the driver U4 is connected to the first end of the inductor L1, the second end of the inductor L1 is grounded through the capacitor C7, the second end of the inductor L1 is connected to the anode of the infrared transmitting tube LED1, and the cathode of the infrared transmitting tube LED1 is grounded.

[0056] In this embodiment, when the control module 102 detects that the door needs to be opened or closed, it sends a switch signal to the control end of the switch circuit. After receiving the signal, the switch circuit transmits it to the driver U4 of the infrared emitting circuit. The driver U4 outputs a PWM control signal according to the received signal. The diode D2, the inductor L1 and the capacitor C7 constitute a step-down circuit, which steps down the DC power supply of the car battery to obtain a voltage suitable for the infrared emitting tube LED1 to work. Ensure that the infrared emitting tube LED1 can stably emit infrared light signals. The infrared light signal is adjusted by the emitting lens 108 and the deflection device 109 to form an infrared beam 110 in a specific direction, which is projected onto the pillar of the car for reception by the photoelectric conversion module 105.

[0057] like Figure 3 As shown, in a disclosed embodiment, the switching circuit includes a transistor Q5; the base of the transistor Q5 serves as a control end of the switching circuit, the collector of the transistor Q5 serves as a first end of the switching circuit, and the emitter of the transistor Q5 serves as a second end of the switching circuit.

[0058] In this embodiment, the switch circuit can be composed of a transistor Q5. If it is detected that the car door is in an open state, the control module 102 outputs a low-level signal to the base of the transistor Q5, the transistor Q5 is turned off, and the collector of the transistor Q5 is at a high level. The high level is added to the control end of the driver U4, and the collector of the transistor Q5 serves as the first end of the switch circuit. When the control end of the driver U4 is at a high level, the driver U4 starts to work. If it is detected that the car door is in a closed state, the control module 102 outputs a high-level signal to the base of the transistor Q5, the transistor Q5 is turned on, the collector of the transistor Q5 is at a low level, and the driver U4 stops working, thereby saving electric energy.

[0059] like Figure 3 As shown, in a disclosed embodiment, the infrared transmitting circuit also includes a resistor R10 and a resistor R11; the first end of the resistor R10 is connected to the cathode of the infrared transmitting tube LED1, the second end of the resistor R10 is grounded through the resistor R11, and the second end of the resistor R10 is connected to the feedback end of the driver U4.

[0060] In this embodiment, when the working current of the infrared emitting tube LED1 changes due to uncontrollable factors, the infrared signal generated by the infrared emitting tube LED1 will change, thereby affecting the stability of the circuit. For this reason, resistors R10 and R11 are added in this embodiment.

[0061] Resistors R10 and R11 form a voltage divider circuit, wherein resistor R11 is used as a sampling resistor. Resistors R10 and R11 are connected in series with the infrared emitting tube LED1. When the infrared emitting tube LED1 is working, the working current flows through resistors R10 and R11 at the same time, and a voltage signal is generated on resistor R11. When the working current of the infrared emitting tube LED1 increases, the voltage on resistor R11 increases, and the voltage on resistor R11 is fed back to the feedback end of the driver U4. The driver U4 can output the duty cycle of the PWM control signal according to the reduction of the feedback end voltage, thereby reducing the average current flowing through the infrared emitting tube LED1. Similarly, when the working current of the infrared emitting tube LED1 decreases, the voltage on resistor R11 decreases, and the driver U4 increases the duty cycle of the output PWM control signal, thereby increasing the average current flowing through the infrared emitting tube LED1.

[0062] In this embodiment, when the working current of the infrared emitting tube LED1 changes due to uncontrollable factors, the resistor R11 as a sampling resistor can sense the current change in real time and generate a corresponding voltage signal, which is fed back to the feedback end of the driver U4. The driver U4 intelligently adjusts the duty cycle of the PWM control signal based on the feedback signal to ensure that the working current of the infrared emitting tube LED1 is stable within a preset range. This automatic adjustment mechanism not only improves the stability and reliability of the circuit, but also effectively protects the infrared emitting tube LED1 and prolongs its service life, so that the infrared emitting circuit can maintain excellent performance in various application scenarios.

[0063] like Figure 4As shown, in a disclosed embodiment, the photoelectric conversion module 105 includes a resistor R3 and multiple photoelectric conversion circuits with the same circuit structure, and the multiple photoelectric conversion circuits with the same circuit structure are connected in parallel; any photoelectric conversion circuit includes a switch tube Q1; the first end of the switch tube Q1 is connected to the VCC power supply, the control end of the switch tube Q1 is connected to the first end of any photoelectric sensor, the second end of any photoelectric sensor is grounded, the second end of the switch tube Q1 is connected to the first end of the resistor R3, the second end of the resistor R3 is grounded, and the first end of the resistor R3 is connected to the control module 102.

[0064] In this embodiment, a plurality of photoelectric sensors are arranged on the door pillars, each of the photoelectric sensors corresponds to a photoelectric conversion circuit, and the plurality of photoelectric conversion circuits are connected in parallel. Figure 4 In the figure, U1, U2, ..., Un represent photoelectric sensors. Assume that after the photoelectric sensor U1 detects the infrared light signal, a voltage is generated on the resistor R1, the switch tube 1 is turned on, and the VCC power supply passes through the switch tube Q1 and the resistor R3 to the ground. A voltage is generated on the resistor R3. The same is true for other photoelectric sensors.

[0065] For example: Assume that the rear door of a commercial vehicle is an electric door, and multiple photoelectric sensors are arranged in parallel from top to bottom on the B-pillar of the vehicle, and the infrared emitting tube LED1 is arranged on the side of the rear door. The infrared ray generated by the infrared emitting tube LED1 is converted into an infrared beam 110 parallel to the B-pillar after passing through the emitting lens 108 and the deflection device 109. The infrared beam 110 hits the B-pillar. When the door is closing, if someone puts his hand on the B-pillar, some photoelectric sensors will not be able to receive the infrared signal. Assuming that the photoelectric sensor U2 does not receive the infrared signal, the switch tube Q2 will be cut off, and the voltage on the corresponding resistor R3 will decrease. The more photoelectric sensors are blocked, the smaller the voltage on the resistor R3. Therefore, the obstacle in the process of closing the door can be judged according to the voltage on the resistor R3.

[0066] like Figure 4 As shown, in a disclosed embodiment, the photoelectric conversion module 105 also includes an isolation amplifier circuit; the isolation amplifier circuit includes an optocoupler D1, a transistor Q4, a resistor R7, an operational amplifier U3, a resistor R5 and a resistor R15; the first input end of the optocoupler D1 is connected to the first end of the resistor R3, the second input end of the optocoupler D1 is grounded, the first output end of the optocoupler D1 is connected to the VDD power supply, the second output end of the optocoupler D1 is connected to the base of the transistor Q4, the collector of the transistor Q4 is connected to the VDD power supply, the emitter of the transistor Q4 is grounded through the resistor R7, the emitter of the transistor Q4 is connected to the non-inverting input end of the operational amplifier U3, the inverting input end of the operational amplifier U3 is grounded through the resistor R15, the output end of the operational amplifier U3 is connected to the inverting input end of the operational amplifier U3 through the resistor R5, and the output end of the operational amplifier U3 is connected to the control module 102.

[0067] In this embodiment, in order to improve the stability of the system, an isolation amplifier circuit is added to this embodiment. The voltage across the resistor R3 is connected in parallel to the two input ends of the optocoupler D1, a voltage difference is generated at the two input ends of the optocoupler D1, the optocoupler D1 is turned on, the second output end of the optocoupler D1 outputs a voltage signal, the transistor Q4 is turned on, and the transistor Q4 works in an amplification state. The greater the voltage on the resistor R3, the greater the power generated by the light-emitting diode inside the optocoupler D1, that is, the greater the current generated by the second output end of the optocoupler D1 (the greater the base current of the transistor Q4), thereby causing the voltage on the resistor R7 to increase. Through the voltage on the resistor R7, it can also be judged whether there is an obstacle during the door closing process.

[0068] In order to make a more accurate judgment on obstacles, an amplifier circuit is added in this embodiment. The amplifier circuit is composed of an operational amplifier U3, a resistor R5 and a resistor R15, and is used to amplify the voltage signal on the resistor R7, and finally send the amplified voltage signal to the control module 102.

[0069] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. An intelligent anti-pinch system for vehicle doors, characterized in that: It includes a door status detection module, a control module, an infrared emission module and a photoelectric conversion module; The door status detection module is connected to the control module, and the door status detection module is used to detect the switch status of the door; The infrared transmitting module is connected to the control module, and the infrared transmitting module is used to emit an infrared light signal; The infrared emission module includes an emission lens and a deflection device; The infrared light signal emitted by the infrared emission module will be converted into infrared light in a specific direction after passing through the emission lens and the deflection device; The photoelectric conversion module is connected to the control module, and is used to receive the infrared light signal emitted by the infrared emission module. The photoelectric conversion module includes a plurality of photoelectric sensors.

2. The intelligent anti-pinch system for vehicle doors as claimed in claim 1, characterized in that: Also includes a filtering module; The photoelectric conversion module is connected to the control module through the filter module.

3. The intelligent anti-pinch system for vehicle doors as claimed in claim 1, characterized in that: Also includes an alarm module; The alarm module is connected to the control module, and is used to send out an alarm signal.

4. The intelligent anti-pinch system for vehicle doors as claimed in claim 1, characterized in that: The infrared transmitting module comprises a switch circuit and an infrared transmitting circuit; The control end of the switch circuit is connected to the control module, the first end of the switch circuit is connected to the infrared transmitting circuit, and the second end of the switch circuit is grounded; The infrared transmitting circuit includes a driver U4, a diode D2, an inductor L1, a capacitor C7 and an infrared transmitting tube LED1; The control end of the driver U4 is connected to the first end of the switch circuit, the output end of the driver U4 is connected to the cathode of the diode D2, the anode of the diode D2 is grounded, the output end of the driver U4 is connected to the first end of the inductor L1, the second end of the inductor L1 is grounded through the capacitor C7, the second end of the inductor L1 is connected to the anode of the infrared emitting tube LED1, and the cathode of the infrared emitting tube LED1 is grounded.

5. The intelligent anti-pinch system for vehicle doors as claimed in claim 4, characterized in that: The switch circuit includes a transistor Q5; The base of the transistor Q5 serves as the control end of the switch circuit, the collector of the transistor Q5 serves as the first end of the switch circuit, and the emitter of the transistor Q5 serves as the second end of the switch circuit.

6. The intelligent anti-pinch system for vehicle doors as claimed in claim 4, characterized in that: The infrared transmitting circuit also includes a resistor R10 and a resistor R11; The first end of the resistor R10 is connected to the cathode of the infrared emitting tube LED1 , the second end of the resistor R10 is grounded through the resistor R11 , and the second end of the resistor R10 is connected to the feedback end of the driver U4 .

7. The intelligent anti-pinch system for vehicle doors as claimed in claim 1, characterized in that: The photoelectric conversion module includes a resistor R3 and multiple photoelectric conversion circuits with the same circuit structure, and the multiple photoelectric conversion circuits with the same circuit structure are connected in parallel; Any photoelectric conversion circuit includes a switch tube Q1; The first end of the switch tube Q1 is connected to the VCC power supply, the control end of the switch tube Q1 is connected to the first end of any photoelectric sensor, the second end of any photoelectric sensor is grounded, the second end of the switch tube Q1 is connected to the first end of the resistor R3, the second end of the resistor R3 is grounded, and the first end of the resistor R3 is connected to the control module.

8. The intelligent anti-pinch system for vehicle doors as claimed in claim 7, characterized in that: The photoelectric conversion module also includes an isolation amplifier circuit; The isolation amplifier circuit includes an optical coupler D1, a transistor Q4, a resistor R7, an operational amplifier U3, a resistor R5 and a resistor R15; The first input end of the optocoupler D1 is connected to the first end of the resistor R3, the second input end of the optocoupler D1 is grounded, the first output end of the optocoupler D1 is connected to the VDD power supply, the second output end of the optocoupler D1 is connected to the base of the transistor Q4, the collector of the transistor Q4 is connected to the VDD power supply, the emitter of the transistor Q4 is grounded through the resistor R7, the emitter of the transistor Q4 is connected to the non-inverting input end of the operational amplifier U3, the inverting input end of the operational amplifier U3 is grounded through the resistor R15, the output end of the operational amplifier U3 is connected to the inverting input end of the operational amplifier U3 through the resistor R5, and the output end of the operational amplifier U3 is connected to the control module.

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