Vehicle interaction system based on dual-mode surface exciter

Abstract

The utility model provides a vehicle interaction system based on a dual-mode surface exciter, and belongs to the technical field of interaction control. The vehicle interaction system based on the dual-mode surface exciter comprises the dual-mode surface exciter, a filtering module, an amplifying module, a signal shaping module, a controller and a vehicle door control module. The dual-mode surface exciter is used for receiving an operation signal of a user and outputting a trigger signal; the input end of the filtering module is connected with a trigger signal; the output end of the filtering module is connected with the input end of the amplification module; the output end of the amplification module is connected with the input end of the signal shaping module; the output end of the signal shaping module is connected with the first signal input end of the controller; the input end of the vehicle door control module is connected with the first signal output end of the controller; the output end of the vehicle door control module is used for controlling vehicle doors to open.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of interactive control, and particularly relates to a vehicle interactive system based on a dual-mode surface exciter. BACKGROUND

[0002] At present, vehicle interactive functions represented by vehicle door unlocking generally rely on independent sensors to realize signal acquisition and interactive response, but the sensors all need independent sensing elements, signal processing circuits and power supply modules, so that the internal space of the vehicle is largely occupied, increasing the difficulty of vehicle design and assembly. For example, in the limited internal space of the vehicle door, the installation of capacitive and pressure sensors and their supporting circuits not only squeezes the layout space of other electronic devices, but also increases the production manufacturing cost, resulting in hardware redundancy and complex wiring. CONTENT OF THE UTILITY MODEL

[0003] The embodiment of the present application provides a vehicle interactive system based on a dual-mode surface exciter to solve the problem of hardware redundancy of the existing interactive system.

[0004] The embodiment of the present application provides a vehicle interactive system based on a dual-mode surface exciter, comprising a dual-mode surface exciter, a filtering module, an amplification module, a signal shaping module, a controller and a vehicle door control module.

[0005] The dual-mode surface exciter is used for receiving an operation signal of a user and outputting a trigger signal.

[0006] An input end of the filtering module is connected with the trigger signal, and an output end of the filtering module is connected with an input end of the amplification module.

[0007] An output end of the amplification module is connected with an input end of the signal shaping module, and an output end of the signal shaping module is connected with a first signal input end of the controller.

[0008] An input end of the vehicle door control module is connected with a first signal output end of the controller, and an output end of the vehicle door control module is used for controlling the opening of the vehicle door.

[0009] In an exemplary embodiment of the present application, the filtering module comprises a resistor R1, a resistor R2, a capacitor C1, a capacitor C2, a resistor R4 and an operational amplifier U2.1.

[0010] A first end of the resistor R1 is an input end of the filtering module, and a second end of the resistor R1 is grounded through the resistor R2.

[0011] A first end of the capacitor C2 is connected with the second end of the resistor R1, and a second end of the capacitor C2 is connected with an inverting input end of the operational amplifier.

[0012] The first end of the capacitor C1 is connected with the first end of the capacitor C2, and the second end of the capacitor C1 is connected with the inverting input end of the operational amplifier U2.1 through the resistor R4; the non-inverting input end of the operational amplifier U2.1 is grounded.

[0013] The output end of the operational amplifier U2.1 is the output end of the filtering module.

[0014] In an exemplary embodiment of the present application, the amplifying module comprises a resistor R9, a capacitor C10 and an amplifying chip U1.

[0015] The first gain setting end of the amplifying chip U1 is connected with the second gain setting end of the amplifying chip U1 through the resistor R9;

[0016] The non-inverting input end of the amplifying chip U1 is used for receiving the output signal of the filtering module;

[0017] The negative power supply end of the amplifying chip U1 and the reference voltage end of the amplifying chip U1 are grounded.

[0018] The positive power supply end of the amplifying chip U1 is connected with the power supply through the capacitor C10; and the output end of the amplifying chip U1 is the output end of the amplifying module.

[0019] In an exemplary embodiment of the present application, the signal shaping module comprises a resistor R3, a resistor R5, a resistor R6, a triode Q1 and a triode Q2.

[0020] The base of the triode Q1 is connected with the output end of the amplifying module, the collector of the triode Q1 is connected with the power supply VCC through the resistor R3, and the emitter of the triode Q1 is grounded through the resistor R6;

[0021] The base of the triode Q2 is connected with the collector of the triode Q1; the collector of the triode Q2 is connected with the power supply VCC through the resistor R5, the emitter of the triode Q2 is grounded through the resistor R6, and the collector of the triode Q2 is the output end of the signal shaping module.

[0022] In an exemplary embodiment of the present application, the vehicle door control module comprises a relay K1, a resistor R11, a resistor R12, a resistor R13, a capacitor C11, a triode Q3, a triode Q4 and a vehicle door control switch K3.

[0023] The first input end of the relay K1 is connected with the output end of the controller; and the second input end of the relay K1 is grounded.

[0024] The common end of the relay K1 is connected with the power supply VDD, and the first output end of the relay K1 is connected with the first end of the capacitor C11 through the resistor R11; the second end of the capacitor C11 is grounded.

[0025] The first end of the capacitor C11 is connected with the base of the triode Q3 through the resistor R12;

[0026] The collector of the triode Q3 is connected to the power supply VDD through the resistor R13, and the emitter of the triode Q3 is connected to the base of the triode Q4;

[0027] The power supply end of the vehicle door control switch K3 is connected to the power supply VDD, and the ground end of the vehicle door control switch K3 is connected to the collector of the triode Q4;

[0028] The emitter of the triode Q4 is grounded.

[0029] In an exemplary embodiment of the present application, the vehicle interaction system based on the dual-mode surface exciter further comprises a distance protection module;

[0030] The distance protection module is connected to the ground end of the vehicle door control module;

[0031] The distance protection module is configured to control the vehicle door to stop the opening operation when the vehicle door is at a preset distance from an external object.

[0032] In an exemplary embodiment of the present application, the distance protection module comprises a distance measuring sensor K2, a resistor R14, a resistor R15, an operational amplifier U4, an operational amplifier U5, and a triode Q5.

[0033] The output end of the distance measuring sensor K2 is connected to the non-inverting input end of the operational amplifier U5 through the resistor R15, and the inverting input end of the operational amplifier U5 is connected to the output end of the operational amplifier U5 through the resistor R14.

[0034] The output end of the operational amplifier U5 is connected to the inverting input end of the operational amplifier U4.

[0035] The non-inverting input end of the operational amplifier U4 is configured to receive a distance reference signal Vref1.

[0036] The output end of the operational amplifier U4 is connected to the base of the triode Q5, and the emitter of the triode Q5 is connected to the emitter of the triode Q4.

[0037] The collector of the triode Q5 is grounded.

[0038] The vehicle interaction system based on the dual-mode surface exciter provided by the embodiments of the present application has the following beneficial effects:

[0039] By using the dual-mode surface exciter as a detection sensor for user operation signals, the present application reduces the number of independent sensors in the vehicle interaction system, thereby reducing hardware redundancy and wiring complexity. The filter module used in the present application prevents the situation of excessive signal clutter caused by using the dual-mode surface exciter as a detection sensor, thereby improving the accuracy of interaction control. BRIEF DESCRIPTION OF DRAWINGS

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the structure of a vehicle interaction system based on a dual-mode surface exciter provided in an embodiment of this application;

[0042] Figure 2 This is a circuit diagram of the first vehicle interaction system based on a dual-mode surface exciter provided in this application embodiment;

[0043] Figure 3 This is a circuit schematic diagram of a controller provided in an embodiment of this application;

[0044] Figure 4 This is a circuit diagram of a second vehicle interaction system based on a dual-mode surface exciter provided in this application embodiment;

[0045] Figure 5 This is a circuit diagram of the third vehicle interaction system based on a dual-mode surface exciter provided in this application embodiment. Detailed Implementation

[0046] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of this solution will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this solution. Based on the embodiments of this solution, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this solution.

[0047] The term "comprising" and any other variations thereof in the specification, claims, and accompanying drawings of this invention mean "including but not limited to," and are intended to cover a non-exclusive inclusion, not limited to the examples listed herein. Furthermore, the terms "first" and "second," etc., are used to distinguish different objects, not to describe a specific order.

[0048] The implementation of this application will be described in detail below with reference to the specific accompanying drawings:

[0049] Figure 1 This is a schematic diagram of a vehicle interaction system based on a dual-mode surface exciter 10, provided in an embodiment of this application. (Refer to...) Figure 1 The vehicle interaction system based on the dual-mode surface exciter 10 includes:

[0050] The dual-mode surface exciter 10, the filter module 11, the amplification module 12, the signal shaping module 13, the controller 15 and the vehicle door control module 14;

[0051] The dual-mode surface exciter 10 is configured to receive an operation signal of a user and output a trigger signal.

[0052] The input end of the filter module 11 is connected with the trigger signal, and the output end of the filter module 11 is connected with the input end of the amplification module 12.

[0053] The output end of the amplification module 12 is connected with the input end of the signal shaping module 13, and the output end of the signal shaping module 13 is connected with the first signal input end of the controller 15.

[0054] The input end of the vehicle door control module 14 is connected with the first signal output end of the controller 15, and the output end of the vehicle door control module 14 is configured to control the opening of the vehicle door.

[0055] In the embodiment, the dual-mode surface exciter 10 is a device capable of electro-acoustic-mechanical conversion, which contains a coil inside. The coil is fixed on the back of the vehicle interior panel by 3M adhesive or screw structure, to ensure rigid coupling with the panel to conduct vibration. The coil is made of multi-layer tightly wound copper wire, and the coil skeleton is made of high-temperature resistant glass fiber material. The magnetic circuit system is composed of a neodymium iron boron (NdFeB) permanent magnet (axial magnetization), a magnetic conducting bowl and a spring.

[0056] The principle of the dual working mode is as follows: active sound generation mode (electro-acoustic conversion), audio signal (20Hz-20kHz) is output to the coil through the power amplifier, and Lorentz force is generated when current I passes through the coil, which pushes the magnetic circuit to vibrate. The vibration is transmitted to the door panel through the spring-damping system, and the panel surface area is used to form distributed sound radiation, to realize high-efficiency sound pressure output in the medium and high frequency band. In passive sensing mode (electromechanical conversion), external force (such as finger tapping, with a force of 0.5-5N) causes the magnetic circuit to displace relative to the coil by Δx, and the coil cuts the magnetic induction line to generate an induced electromotive force: E=BL·v (v is the instantaneous speed). Therefore, when the internal coil receives the audio signal to drive the magnetic circuit to vibrate, the door panel radiates sound waves (frequency range 20Hz-20kHz), which can generate sound. The operation signal of the user can be a tapping signal. When the external tapping causes the magnetic circuit to displace, the coil induces an electromotive force, which can be converted into a digital pulse through a signal conditioning circuit, to control the opening or closing of the vehicle door. The dual-mode surface exciter 10 can convert the external tapping signal into a trigger signal after detecting the external tapping signal.

[0057] In the embodiment, the filter module 11 can filter the trigger signal output by the dual-mode surface exciter 10. Since the dual-mode surface exciter 10 itself is affected by external environmental vibration or interference signal, the interference signal will enter the system together with the knock signal, and the filter module 11 can filter out the unwanted signal and only keep the effective frequency component related to the knock signal, thereby improving the accuracy of subsequent processing.

[0058] In the embodiment, since the dual-mode surface exciter 10 can be understood as a kind of vibration sensor, the signal is relatively weak, and therefore the signal output by the filter module 11 can be amplified by the amplification module 12. The signal shaping module 13 can shape the input sine wave or irregular waveform into a pulse signal, which is input to the first signal input end of the controller 15. The first signal output end of the controller 15 is connected to the input end of the vehicle door control module 14, which can control the vehicle door to open or stop, etc. The vehicle door can also refer to the door of the trunk of the car or the side door of the car, etc. The controller 15 can use a common microcontroller such as a single-chip microcomputer, DSP, ARM, etc. The controller 15 can perform logical judgment on the signal input to the first signal input end, for example, when the time interval between two consecutive knock signals received by the controller 15 is less than 500 ms, the input signal is considered valid, at this time, a high level is output, otherwise a low level is output, to prevent the occurrence of false touch.

[0059] As can be seen from the above, by using the dual-mode surface exciter 10 as a detection sensor, the present application reduces the number of independent sensors arranged in the vehicle interaction system, thereby reducing hardware redundancy and reducing wiring complexity. Based on the filter module 11, the present application prevents the case where there are many signal clutters due to using the dual-mode surface exciter 10 as a detection sensor, thereby improving the accuracy of interaction control.

[0060] Figure 2 is a circuit schematic diagram of a first vehicle interaction system based on the dual-mode surface exciter 10 provided by an embodiment of the present application. Figure 3 is a circuit schematic diagram of a controller 15 provided by an embodiment of the present application. Referring to Figure 2 and Figure 3 In an embodiment of the present application, the filter module 11 comprises a resistor R1, a resistor R2, a capacitor C1, a capacitor C2, a resistor R4 and an operational amplifier U2.1.

[0061] The first end of the resistor R1 is the input end of the filter module 11; the second end of the resistor R1 is connected to the ground through the resistor R2.

[0062] The first end of the capacitor C2 is connected to the second end of the resistor R1, and the second end of the capacitor C2 is connected to the inverting input end of the operational amplifier.

[0063] The first end of the capacitor C1 is connected to the first end of the capacitor C2, and the second end of the capacitor C1 is connected to the inverting input end of the operational amplifier U2.1 through the resistor R4; the non-inverting input end of the operational amplifier U2.1 is grounded.

[0064] The output end of the operational amplifier U2.1 is the output end of the filtering module 11.

[0065] In the embodiment, the resistor R2, the capacitor C2, the resistor R4, the capacitor C1 and the operational amplifier U2.1 constitute a second-order filter, which can filter out the external noise or interference signal in the input trigger signal and output the effective knocking signal.

[0066] In an embodiment of the present application, the amplifying module 12 comprises a resistor R9, a capacitor C10 and an amplifying chip U1.

[0067] The first gain setting end of the amplifying chip U1 is connected to the second gain setting end of the amplifying chip U1 through the resistor R9.

[0068] The non-inverting input end of the amplifying chip U1 is used for receiving the output signal of the filtering module 11.

[0069] The negative power supply end of the amplifying chip U1 and the reference voltage end of the amplifying chip U1 are grounded.

[0070] The positive power supply end of the amplifying chip U1 is connected to the power supply through the capacitor C10; and the output end of the amplifying chip U1 is the output end of the amplifying module 12.

[0071] In the embodiment, the model of the amplifying chip U1 can be AD620 series chip, and the resistor R9 is used for controlling the amplifying gain.

[0072] The base of the triode Q1 is connected to the output end of the amplifying module 12, the collector of the triode Q1 is connected to the power supply VCC through the resistor R3, and the emitter of the triode Q1 is grounded through the resistor R6.

[0073] The base of the triode Q2 is connected to the collector of the triode Q1; the collector of the triode Q2 is connected to the power supply VCC through the resistor R5, and the emitter of the triode Q2 is grounded through the resistor R6; and the collector of the triode Q2 is the output end of the signal shaping module 13.

[0074] In the embodiment, the signal shaping module 13 can convert any form of signal into a square wave or pulse signal, and can shape the input signal by setting the upper threshold and the lower threshold. The principle is that when the input signal gradually increases from zero and is less than the preset upper threshold, the output is low; when the input signal is greater than or equal to the preset upper threshold, the output is flipped to high. When the input signal starts to decrease and is greater than the preset lower threshold, the output is high; when the input signal is less than or equal to the preset lower threshold, the output is flipped to low; when the input signal is between the upper threshold and the lower threshold, the output signal remains unchanged.

[0075] From the above, it can be concluded that, since the external environment is complex in the vehicle interaction system, various electromagnetic interferences and noises exist, therefore, based on the filtering module 11, the application can ensure that the output signal is an effective knocking signal, and can provide a high-quality signal basis for subsequent processing. The application converts the input signal into a square wave signal through the signal shaping module 13, which is convenient for the controller 15 to process and analyze the signal, and improves the response speed and accuracy of the application.

[0076] Figure 4 is a second circuit principle diagram of a vehicle interaction system based on a dual-mode surface exciter 10 provided by the embodiment of the application. Figure 5 is a third circuit principle diagram of a vehicle interaction system based on a dual-mode surface exciter 10 provided by the embodiment of the application. Referring to Figure 4 and Figure 5 In an embodiment of the application, the vehicle door control module 14 comprises a relay K1, a resistor R11, a resistor R12, a resistor R13, a capacitor C11, a triode Q3, a triode Q4, and a vehicle door control switch K3.

[0077] The first input end of the relay K1 is connected to the output end of the controller 15; and the second input end of the relay K1 is grounded.

[0078] The common end of the relay K1 is connected to the power supply VDD, and the first output end of the relay K1 is connected to the first end of the capacitor C11 through the resistor R11; and the second end of the capacitor C11 is grounded.

[0079] The first end of the capacitor C11 is connected to the base of the triode Q3 through the resistor R12.

[0080] The collector of the triode Q3 is connected to the power supply VDD through the resistor R13, and the emitter of the triode Q3 is connected to the base of the triode Q4.

[0081] The power supply end of the vehicle door control switch K3 is connected to the power supply VDD, and the ground end of the vehicle door control switch K3 is connected to the collector of the triode Q4.

[0082] The emitter of the triode Q4 is used for grounding.

[0083] In the embodiment, when the output end of the controller 15 outputs a high level signal, the relay K1 is powered, at this time the relay K1 is attracted, at this time the voltage of the base of the triode Q3 reaches the conduction condition with the charging of the capacitor C11, at this time the triode Q3 is turned on, the base of the triode Q4 is also high level, at this time the triode Q4 is turned on, the vehicle door control switch K3 is powered, at this time the vehicle door is opened.

[0084] In an embodiment of the present application, the vehicle interaction system based on the dual-mode surface exciter 10 further comprises a distance protection module;

[0085] The distance protection module is connected with the ground end of the vehicle door control module 14;

[0086] The distance protection module is used to control the vehicle door to stop the opening operation when the vehicle door is at a preset distance from the external object.

[0087] In an embodiment of the present application, the distance protection module comprises a ranging sensor K2, a resistor R14, a resistor R15, an operational amplifier U4, an operational amplifier U5 and a triode Q5.

[0088] The output end of the ranging sensor K2 is connected with the non-inverting input end of the operational amplifier U5 through the resistor R15; the inverting input end of the operational amplifier U5 is connected with the output end of the operational amplifier U5 through the resistor R14;

[0089] The output end of the operational amplifier U5 is connected with the inverting input end of the operational amplifier U4;

[0090] The non-inverting input end of the operational amplifier U4 is used to receive a distance reference signal Vref1;

[0091] The output end of the operational amplifier U4 is connected with the base of the triode Q5, and the emitter of the triode Q5 is connected with the emitter of the triode Q4.

[0092] The collector of the triode Q5 is grounded.

[0093] In the embodiment, the distance protection module can monitor the distance between the vehicle door and the surrounding objects in real time, and when the door opening space is insufficient, the power supply of the vehicle door control switch K3 can be disconnected, so that the vehicle door stops opening. The ranging sensor K2 can be installed at the tail of the vehicle door, or other parts according to the actual use scene of the vehicle door. The vehicle door control switch K3 can be in the form of an electronic lock.

[0094] The signal detected by the distance sensor K2 is input to a same-phase proportional amplifier composed of an operational amplifier U5, a resistor R14 and a resistor R15, so that the signal detected by the distance sensor K2 can be amplified, and then judged by a comparator composed of an operational amplifier U4. The farther the distance detected by the distance sensor K2, the greater the output voltage. When the input signal is greater than a preset distance reference signal Vref1, the output end of the operational amplifier U4 outputs a low level, the triode Q5 is turned on, and the vehicle door control switch K3 normally works. If the output signal of the distance sensor K2 is less than the preset distance reference signal Vref1, the output end of the operational amplifier U4 outputs a high level, the triode Q5 is cut off, and the vehicle door control switch K3 cannot form a loop with the ground, so that the vehicle door cannot continue to be opened.

[0095] From the above, it can be concluded that the application further improves the stability and anti-interference ability of the circuit through the relay K1. The distance protection module can monitor the distance between the vehicle door and the surrounding objects in real time. When the door opening space is insufficient, the power supply of the vehicle door control switch K3 can be turned off in time, so that the vehicle door stops opening, effectively avoiding the collision between the vehicle door and the external objects, and ensuring the safety of the vehicle and the personnel.

[0096] The above embodiments are only used to illustrate the technical solutions of the application, but not limit it; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application.

Claims

1. A vehicle interaction system based on a dual-mode surface exciter, characterized in that, include: Dual-mode surface exciter, filtering module, amplification module, signal shaping module, controller and door control module; The dual-mode surface exciter is used to receive user operation signals and output trigger signals; The input terminal of the filtering module is connected to the trigger signal, and the output terminal of the filtering module is connected to the input terminal of the amplification module. The output of the amplification module is connected to the input of the signal shaping module; the output of the signal shaping module is connected to the first signal input of the controller. The input terminal of the door control module is connected to the first signal output terminal of the controller; the output terminal of the door control module is used to control the opening of the door.

2. The vehicle interaction system based on a dual-mode surface exciter as described in claim 1, characterized in that, The filtering module includes: resistor R1, resistor R2, capacitor C1, capacitor C2, resistor R4, and operational amplifier U2.1; The first terminal of resistor R1 is the input terminal of the filter module; the second terminal of resistor R1 is grounded through resistor R2. The first terminal of capacitor C2 is connected to the second terminal of resistor R1, and the second terminal of capacitor C2 is connected to the inverting input terminal of operational amplifier; The first terminal of capacitor C1 is connected to the first terminal of capacitor C2, and the second terminal of capacitor C1 is connected to the inverting input terminal of operational amplifier U2.1 through resistor R4; the non-inverting input terminal of operational amplifier U2.1 is grounded. The output terminal of the operational amplifier U2.1 is the output terminal of the filter module.

3. The vehicle interaction system based on a dual-mode surface exciter as described in claim 1, characterized in that, The amplification module includes: resistor R9, capacitor C10 and amplification chip U1; The first gain setting terminal of the amplifier chip U1 is connected to the second gain setting terminal of the amplifier chip U1 through the resistor R9; The non-inverting input terminal of the amplifier chip U1 is used to receive the output signal of the filter module; The negative power supply terminal and the reference voltage terminal of the amplifier chip U1 are grounded; The positive power supply terminal of the amplifier chip U1 is connected to the power supply through the capacitor C10; the output terminal of the amplifier chip U1 is the output terminal of the amplification module.

4. The vehicle interaction system based on a dual-mode surface exciter as described in claim 1, characterized in that, The signal shaping module includes: resistors R3, R5, and R6, transistor Q1, and transistor Q2; The base of transistor Q1 is connected to the output terminal of the amplifier module, the collector of transistor Q1 is connected to the power supply VCC through the resistor R3, and the emitter of transistor Q1 is grounded through the resistor R6. The base of transistor Q2 is connected to the collector of transistor Q1; the collector of transistor Q2 is connected to power supply VCC through resistor R5, and the emitter of transistor Q2 is grounded through resistor R6; the collector of transistor Q2 is the output terminal of the signal shaping module.

5. The vehicle interaction system based on a dual-mode surface exciter as described in claim 1, characterized in that, The door control module includes: relay K1, resistor R11, resistor R12, resistor R13, capacitor C11, transistor Q3, transistor Q4, and door control switch K3; The first input terminal of relay K1 is connected to the output terminal of the controller; the second input terminal of relay K1 is grounded. The common terminal of the relay K1 is connected to the power supply VDD, and the first output terminal of the relay K1 is connected to the first terminal of the capacitor C11 through the resistor R11; the second terminal of the capacitor C11 is grounded. The first terminal of the capacitor C11 is connected to the base of the transistor Q3 through the resistor R12; The collector of transistor Q3 is connected to power supply VDD through resistor R13, and the emitter of transistor Q3 is connected to the base of transistor Q4. The power supply terminal of the door control switch K3 is connected to the power supply VDD, and the ground terminal of the door control switch K3 is connected to the collector of the transistor Q4. The emitter of the transistor Q4 is used for grounding.

6. The vehicle interaction system based on a dual-mode surface exciter as described in claim 5, characterized in that, Also includes: Distance protection module; The distance protection module is connected to the grounding terminal of the door control module; The distance protection module is used to control the door to stop opening when the door is at a preset distance from an external object.

7. The vehicle interaction system based on a dual-mode surface exciter as described in claim 6, characterized in that, The distance protection module includes: a distance sensor K2, a resistor R14, a resistor R15, an operational amplifier U4, an operational amplifier U5, and a transistor Q5; The output terminal of the ranging sensor K2 is connected to the non-inverting input terminal of the operational amplifier U5 through the resistor R15; the inverting input terminal of the operational amplifier U5 is connected to the output terminal of the operational amplifier U5 through the resistor R14. The output terminal of the operational amplifier U5 is connected to the inverting input terminal of the operational amplifier U4; The non-inverting input of the operational amplifier U4 is used to receive the distance reference signal Vref1; The output terminal of the operational amplifier U4 is connected to the base of the transistor Q5, and the emitter of the transistor Q5 is connected to the emitter of the transistor Q4. The collector of the transistor Q5 is grounded.

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