Automobile electronic circuit practical training device and system thereof

Abstract

The utility model discloses an automobile electronic circuit practical training device and a system thereof, and relates to the technical field of automobile practical training. The automobile electronic circuit practical training device comprises a main control circuit, a power supply management circuit, an analog circuit, a detection circuit and a prompt circuit. Wherein the power management circuit is used for disconnecting a path between the power input end and the analog circuit according to an emergency stop signal output by the main control circuit; the analog circuit is used for simulating an automobile electronic circuit and is provided with a connecting interface at the connecting end of each component; the detection circuit is used for detecting the connection state of each component in the analog circuit and outputting a detection signal to the main control circuit; and the prompt circuit is used for outputting a prompt signal according to the prompt control signal output by the main control circuit. The utility model aims to improve the practicability of the automobile electronic control teaching product.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile training, and particularly relates to an automobile electronic circuit training device and a system thereof. Background Art

[0002] With the rapid development of the times, the Chinese automobile market continues to maintain a growth trend. Traditional fuel vehicles are being updated rapidly, and a large number of automobile maintenance talents are urgently needed.

[0003] At present, the overall automobile industry is in an accelerated development stage. However, the teaching equipment related to automobiles is not comprehensive enough, and most of the teaching products are mainly demonstration boards or whole vehicles, which limits the teaching area and makes the teaching unable to be intelligent and convenient, and cannot meet the training of automobile professional maintenance personnel in vocational and technical colleges.

[0004] At the present stage, the automobile electronic and electric control teaching products lack self-diagnosis functions, which not only may cause component losses during the teaching process, but also reduce the teaching efficiency. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a control device, aiming to improve the practicability of automobile electronic and electric control teaching products.

[0006] To achieve the above purpose, the automobile electronic circuit training device proposed by the utility model includes a main control circuit, a power management circuit, an analog circuit, a detection circuit, and a prompt circuit;

[0007] Among them, the input end of the power management circuit is electrically connected to the power input end, the controlled end of the power management circuit is electrically connected to the main control circuit, and the power management circuit is used to disconnect the path between the power input end and the analog circuit according to the emergency stop signal output by the main control circuit;

[0008] The input end of the analog circuit is electrically connected to the output end of the power management circuit, and the analog circuit is used to simulate the automobile electronic circuit and set connection interfaces at the connection ends of each component;

[0009] The input end of the detection circuit is electrically connected to the analog circuit, and the output end of the detection circuit is electrically connected to the main control circuit. The detection circuit is used to detect the connection status of each component in the analog circuit and output a detection signal to the main control circuit;

[0010] The input end of the prompt circuit is electrically connected to the main control circuit, and the prompt circuit is used to output a prompt signal according to the prompt control signal output by the main control circuit.

[0011] In one embodiment, the power management circuit includes a voltage conversion circuit. The input end of the voltage conversion circuit is electrically connected to the power input end, and the output end of the voltage conversion circuit is electrically connected to the input end of the analog circuit. The voltage conversion circuit is configured to convert the input first voltage into a second voltage and output it.

[0012] In one embodiment, the power management circuit further includes a switch circuit. The input end of the switch circuit is electrically connected to the power input end, the controlled end of the switch circuit is electrically connected to the main control circuit, and the output end of the switch circuit is electrically connected to the input end of the voltage conversion circuit. The switch circuit is configured to disconnect the path between the power input end and the voltage conversion circuit according to the emergency stop signal output by the main control circuit.

[0013] In one embodiment, the analog circuit includes at least one of a fan control circuit, a wiper circuit, a window lift circuit, a rearview mirror circuit, a lighting circuit, a turn signal circuit, an ignition circuit, and a stepper motor control circuit.

[0014] In one embodiment, the prompting circuit is an LED prompting circuit. The LED prompting circuit is electrically connected to the main control circuit and is configured to output a corresponding LED prompting signal according to the prompting control signal output by the main control circuit;

[0015] Among them, the LED prompting circuit is provided with at least two different LED prompting circuits.

[0016] In one embodiment, the automotive electronic circuit training device further includes a touch switch assembly. The touch switch assembly is electrically connected to the main control circuit. The touch switch assembly is disposed on the surface of the automotive electronic circuit training device and is configured to output a trigger signal when triggered;

[0017] Among them, the main control circuit is configured to conduct or disconnect the path between the power input end and the power management circuit according to the trigger signal.

[0018] In one embodiment, the automotive electronic circuit training device further includes a communication circuit. The communication circuit is electrically connected to the main control circuit. The communication circuit is configured to establish a communication connection between the automotive electronic circuit training device and an external terminal.

[0019] In one embodiment, the automotive electronic circuit training device further includes a fault setting circuit. The input end of the fault setting circuit is electrically connected to the main control circuit. The fault setting circuit is electrically connected to the analog circuit and is configured to set a circuit fault in the analog circuit according to the fault setting signal output by the main control circuit;

[0020] Among them, the fault setting signal output by the main control circuit is output according to the external terminal control signal input by the communication circuit.

[0021] The present utility model also provides an automotive electronic circuit training system, characterized in that the automotive electronic circuit training system includes the automotive electronic circuit training device as described in any one of the above, connection wires, detection equipment, and an external terminal.

[0022] The technical solution of the present utility model effectively improves the practicability of automotive electronic control teaching products by adopting an automotive electronic circuit training device. Among them, the main control circuit obtains the working states of various components in the current circuit through the detection signals input by the detection circuit, and outputs an emergency stop signal according to the working states of various components, so as to disconnect or maintain the path between the power input end and the analog circuit by the power management circuit, thereby avoiding the risk of damage to each component in the automotive electronic circuit training device. When the main control circuit outputs an emergency stop signal, a prompt control signal will be simultaneously output to the prompt circuit to enable the prompt circuit to output a prompt signal. The operator can understand the current working state of the automotive electronic circuit training device through the prompt circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0024] Figure 1 It is a module schematic diagram of the automotive electronic circuit training device of the present utility model;

[0025] Figure 2 It is a schematic diagram of an embodiment of the automotive electronic circuit training device of the present utility model;

[0026] Figure 3 It is a circuit schematic diagram of an embodiment of the automotive electronic circuit training device of the present utility model.

[0027] Explanation of the reference numerals in the drawings:

[0028] 10. Main control circuit; 20. Power management circuit; 21. Voltage conversion circuit; 22. Switch circuit; 30. Analog circuit; 40. Detection circuit; 50. Prompt circuit.

[0029] The realization, functional features, and advantages of the object of the present utility model will be further described in conjunction with the embodiments with reference to the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0033] With the rapid development of the times, the Chinese automobile market continues to maintain a growth trend. Traditional fuel vehicles are updated rapidly, and a large number of automobile maintenance talents are urgently needed. At present, the entire automobile industry is in an accelerated development stage. However, the teaching equipment related to automobiles is not comprehensive enough, and teaching products mainly include demonstration boards or whole vehicles, which limits the teaching area and makes teaching unable to be intelligent and convenient, and cannot meet the training of professional automobile maintenance personnel in vocational and technical colleges. The current automobile electronic and electronic control teaching products lack self-diagnosis functions, resulting in not only the possibility of component loss during the teaching process, but also the reduction of teaching efficiency.

[0034] Therefore, referring to Figures 1 to 3 , the present utility model proposes an automobile electronic circuit training device, and the automobile electronic circuit training device includes a main control circuit 10, a power management circuit 20, an analog circuit 30, a detection circuit 40, and a prompt circuit 50;

[0035] Among them, the input end of the power management circuit 20 is electrically connected to the power input end, the controlled end of the power management circuit 20 is electrically connected to the main control circuit 10, and the power management circuit 20 is used to disconnect the path between the power input end and the analog circuit 30 according to the emergency stop signal output by the main control circuit 10;

[0036] The input end of the analog circuit 30 is electrically connected to the output end of the power management circuit 20. The analog circuit 30 is used to simulate an automotive electronic circuit, and connection interfaces are provided at the connection ends of each component.

[0037] The input end of the detection circuit 40 is electrically connected to the analog circuit 30, and the output end of the detection circuit 40 is electrically connected to the main control circuit 10. The detection circuit 40 is used to detect the connection states of the components in the analog circuit 30 and output detection signals to the main control circuit 10.

[0038] The input end of the prompt circuit 50 is electrically connected to the main control circuit 10. The prompt circuit 50 is used to output prompt signals according to the prompt control signals output by the main control circuit 10.

[0039] In this embodiment, the main control circuit 10 can be implemented by a main controller, such as an FPGA (Field Programmable Gate Array, programmable logic gate array chip), an MCU (Microcontroller Unit, micro control unit), a DSP (Digital Signal Process, digital signal processing chip), an SOC (System On Chip, system-on-chip), etc. The main control circuit 10 in the automotive electronic circuit training device is mainly responsible for coordinating and controlling the data acquisition, processing, decision-making of each circuit and module, and the response of the actuator. Using different main controllers will directly affect the performance, cost, power consumption, and development flexibility of the system. In practical applications, it can be determined according to the requirements of specific application scenarios, such as factors like processing speed, power consumption limit, cost budget, development cycle, and system scalability. In actual projects, multiple types of processors may be used in combination to achieve the optimal system performance and efficiency.

[0040] In this embodiment, the power management circuit 20 includes a voltage conversion circuit 21. The input end of the voltage conversion circuit 21 is electrically connected to the power input end. The output end of the voltage conversion circuit 21 is electrically connected to the input end of the analog circuit 30. The voltage conversion circuit 21 is used to convert the input first voltage into a second voltage and output it. The power management circuit 20 further includes a switch circuit 22. The input end of the switch circuit 22 is electrically connected to the power input end. The controlled end of the switch circuit 22 is electrically connected to the main control circuit 10. The output end of the switch circuit 22 is electrically connected to the input end of the voltage conversion circuit 21. The switch circuit 22 is used to disconnect the path between the power input end and the voltage conversion circuit 21 according to the emergency stop signal output by the main control circuit 10. Among them, the voltage conversion circuit 21 can be an AC / DC voltage conversion circuit or a DC / DC voltage conversion circuit. For different components and circuits, there are significant differences in the required supply voltages. For example, when the input of the automotive electronic circuit training device is the commercial power of 220V AC, that is, the first voltage. The voltage conversion circuit 21 will convert the input 220V AC voltage and output it as 12V DC voltage, that is, the second voltage. The voltage conversion is achieved through the voltage conversion circuit 21, so that each component and circuit is powered on, thus ensuring the reliability and stability of the operation of different component circuits. Further, the switch circuit 22 can be implemented by at least one switching tube, such as a MOS tube, an IGBT tube, a thyristor, a triode, a power tube, etc., and / or implemented by at least one switching device, such as a contactor, a circuit breaker, and a relay. Among them, when the switch circuit 22 receives the emergency stop signal output by the main control circuit 10, it disconnects the path between the power input end and the voltage conversion circuit 21 to ensure effective protection of the components in the abnormal connection state and avoid the problem of component damage due to abnormal connection. In addition, the switch circuit 22 can also conduct or disconnect the path between the power input end and the voltage conversion circuit 21 through a touch switch component, or conduct or disconnect the path between the power input end and the voltage conversion circuit 21 when receiving other signals output by the main control circuit 10.

[0041] In this embodiment, the detection circuit 40 can be implemented by a voltage detection circuit, a current detection circuit, etc. By detecting the real-time AC and DC electrical parameters in the detection circuit 40, among which, the AC electrical parameters include: voltage, current, frequency, power factor, active power, total active power, etc., and the DC electrical parameters include: voltage, current, power, total power, etc. By detecting the above parameters and feeding them back to the main control circuit 10, the main control circuit 10 makes a safe operation judgment based on the obtained parameters and controls the output of the emergency stop signal for power supply.

[0042] In this embodiment, the prompting circuit 50 can adopt a voice prompting circuit such as a buzzer or a visual prompting circuit such as an LED. Specifically, taking the prompting circuit 50 adopting a buzzer as an example. When a trainee uses the automotive electronic circuit training device, the touch switch component is triggered to conduct the path between the power input terminal and each component. At this time, the buzzer can emit a sound to prompt the trainee about the current state of the device. For example, when all the components in the automotive electronic circuit training device are normally connected, the buzzer will be in a static state; when the components in the automotive electronic circuit training device are abnormally connected, the buzzer will be in a working state to emit a sound to remind the trainee that the current connection state is incorrect. The trainee can intuitively understand the working state of the automotive electronic circuit training device by controlling the prompting signal output by the prompting circuit 50 through the prompting control signal output by the main control circuit 10.

[0043] The technical solution of the present utility model effectively improves the practicability of automotive electronic control teaching products by adopting an automotive electronic circuit training device. Among them, the main control circuit 10 obtains the working state of each component in the current circuit through the detection signal input by the detection circuit 40, and outputs an emergency stop signal according to the working state of each component, so that the power management circuit 20 disconnects or maintains the path between the power input terminal and the analog circuit 30, thereby avoiding the risk of damage to each component in the automotive electronic circuit training device. When the main control circuit 10 outputs an emergency stop signal, a prompting control signal will be simultaneously output to the prompting circuit 50, so that the prompting circuit 50 outputs a prompting signal. The operator can understand the current working state of the automotive electronic circuit training device through the prompting circuit 50.

[0044] In an embodiment of the present utility model, the analog circuit 30 includes at least one of a fan control circuit, a wiper circuit, a window lifter circuit, a rearview mirror circuit, a lighting circuit, a turn signal lamp circuit, an ignition circuit, and a stepping motor control circuit.

[0045] In this embodiment, the analog circuit 30 is a modular analog circuit 30 that extracts the vehicle's circuit according to the original vehicle's electrical circuit and separately develops and draws it into multiple circuit control lines. Based on the vehicle's components and electrical and electronic components, a circuit control panel is constructed, and the electrical control circuit diagram is drawn on the device panel. Students can recognize and analyze the working principles of automotive electronic components by comparing the circuit diagram with the physical object, and conduct wire connection according to the circuit schematic diagram. Among them, taking the analog circuit 30 as the electrical control circuit of three types of cooling fans in the vehicle as an example. The electrical control circuits of the three types of cooling fans in the vehicle include a resistor-controlled speed regulation circuit, a relay-controlled speed regulation circuit, and a duty-cycle stepless speed regulation circuit. Among them, the resistor-controlled speed regulation circuit, the relay-controlled speed regulation circuit, and the duty-cycle stepless speed regulation circuit include components such as relays, motors, and ECUs, and connection interfaces are provided at the electrodes of each component. Students can connect through connecting wires to achieve the purpose of learning the working principle and composition of the circuit. In addition, students can also use an ammeter, a voltmeter, a multimeter, an oscilloscope, etc. to connect to the connection interfaces on the circuit schematic diagram to detect current, voltage, waveforms, etc. Among them, if the student is not familiar with the operation and there is a situation where the positive and negative poles of the device are connected reversely, etc., it will cause the circuit voltage or current of the entire training device to increase instantaneously, exceeding the safe threshold range. At this time, the main control circuit 10 will detect the real-time circuit voltage, current, etc. through the detection circuit 40, and make a safety operation judgment based on the real-time data. When it exceeds the safe threshold range, it will control the entire training device to power off, so as to realize the safe use of the training device and avoid the waste of manpower and material resources caused by manual supervision and manual observation of electrical parameter data.

[0046] In an embodiment of the present invention, the prompting circuit 50 is an LED prompting circuit, and the LED prompting circuit is electrically connected to the main control circuit 10 and is used to output a corresponding LED prompting signal according to the prompting control signal output by the main control circuit 10;

[0047] Among them, the LED prompting circuit is provided with at least two different LED prompting circuits.

[0048] In this embodiment, the LED prompting circuit includes multiple LED prompting circuits of different colors, and different working states of the automotive electronic circuit training device are represented by the LED prompting circuits of different colors, and the LED prompting circuits are all set at. For example, a green LED prompting circuit is used to indicate that the automotive electronic circuit training device is in a normal working state; a red LED prompting circuit is used to indicate that the automotive electronic circuit training device is in an abnormal working state. Among them, only one group of LED prompting circuits of a certain color is in the conducting state among the LED prompting circuits of different colors, while the other LED prompting circuits of different colors are in the off state. Therefore, in order to reduce the number of interfaces between the main control circuit 10 and the prompting circuit 50, the method of a direction indicator and a switch circuit 22 can be adopted to realize the control of the prompting circuit 50.

[0049] In an embodiment of the present utility model, the automotive electronic circuit training device further includes a touch switch assembly. The touch switch assembly is electrically connected to the main control circuit 10. The touch switch assembly is disposed on the surface of the automotive electronic circuit training device and is configured to output a trigger signal when triggered.

[0050] Wherein, the main control circuit 10 is configured to conduct or disconnect the path between the power input terminal and the power management circuit 20 according to the trigger signal.

[0051] In this embodiment, the touch switch assembly can be implemented by using buttons, knobs, virtual buttons, touch screens, toggle switches, etc. to input the trigger signal. The trainee can input a trigger signal to the main control circuit 10 through the touch switch assembly, so that the main control circuit 10 conducts or disconnects the path between the power input terminal and the power management circuit 20 according to the trigger signal, thereby enabling the components in the automotive electronic circuit training device to be powered on or powered off. When the trigger signal output by the touch switch assembly is to conduct the path between the power input terminal and the power management circuit 20, the main control circuit 10 will judge whether the current component is normally connected according to the detection signal output by the detection circuit 40. When the component is normally connected, the main control circuit 10 will control the prompt circuit 50 to output a prompt signal indicating normal connection; when the component is abnormally connected, the main control circuit 10 will first control the switch circuit 22 to disconnect the path between the component and the power input terminal, and control the prompt circuit 50 to output a prompt signal indicating abnormal connection. By setting the touch switch assembly, the switch control of the automotive electronic circuit training device is realized, and the judgment of whether the connection relationship of the components is correct is further realized.

[0052] In an embodiment of the present utility model, the automotive electronic circuit training device further includes a communication circuit. The communication circuit is electrically connected to the main control circuit 10. The communication circuit is used to establish a communication connection between the automotive electronic circuit training device and an external terminal.

[0053] In this embodiment, the communication circuit includes a wireless communication module. Among them, the wireless communication module can adopt a wireless communication chip, such as a 4G / 5G communication chip, a WI-FI communication chip, a Bluetooth communication chip, a local area network communication chip, etc. The wireless communication chip can establish a communication connection with an external terminal via an antenna and a wireless communication network. For example, if the external terminal is a user's handheld terminal, the wireless communication chip establishes a wireless communication connection with the user's handheld terminal via a 4G / 5G network. The user can operate the corresponding APP on the handheld terminal to enable the handheld terminal to output a corresponding control signal to the wireless communication chip via the 4G / 5G network. Optionally, the communication circuit further includes a wired communication module. Among them, the wired communication module can adopt a wired communication chip, such as a CAN communication chip, an SPI communication chip, an I2C communication chip, a LIN communication chip, etc. The wired communication chip can establish a communication connection with an external terminal via a communication line. For example, in multiple automotive electronic circuit training devices, communication connections with an external terminal are established through the wired communication module. Among them, the external terminal can output a control instruction to the automotive electronic circuit training device through the communication circuit in the automotive electronic circuit training device, so that the automotive electronic circuit training device performs corresponding actions according to the control instruction. The automotive electronic circuit training device can also output a detection signal through the communication circuit, so that the external terminal can timely learn about its working state.

[0054] In an embodiment of the present invention, the automotive electronic circuit training device further includes a fault setting circuit. The input end of the fault setting circuit is electrically connected to the main control circuit 10. The fault setting circuit is electrically connected to the analog circuit 30 and is used to set a circuit fault in the analog circuit 30 according to a fault setting signal output by the main control circuit 10;

[0055] Among them, the fault setting signal output by the main control circuit 10 is output according to an external terminal control signal input by the communication circuit.

[0056] In this embodiment, the fault setting circuit can be implemented jointly by multiple switch control circuits and the main control circuit 10. At least one fault setting point and at least one fault detection hole are provided corresponding to each switch circuit in each component. Among them, the fault setting point is used to set circuit faults, and the fault detection hole is used to detect the position of the set faults. The fault setting point can be flexibly set on each branch. When setting, a switch is respectively connected in series on each branch to control the on / off of the corresponding branch, so as to achieve the purpose of setting faults. Similarly, the fault detection hole is realized by connecting a terminal in the circuit. Students can use instruments such as multimeters to detect circuit faults and eliminate them. Further, the main control circuit 10 can establish a communication connection with an external terminal through a communication circuit, receive a control instruction sent by the external terminal through the communication circuit, and then control the switch circuit 22 corresponding to each component to conduct or disconnect the path between the component and the power management circuit 20. The instructor can set faults of the components in the automotive electronic circuit training device through the external terminal; the student can select the component with a fault through the external terminal and then eliminate it. The automotive electronic circuit training device can improve the students' independent detection and judgment ability and their independent learning ability through the fault setting circuit.

[0057] The present utility model also provides an automotive electronic circuit training system, which includes the automotive electronic circuit training device as described in any one of the above, connection wires, detection equipment, and an external terminal. It should be noted that since the automotive electronic circuit training system of the present utility model is based on the above-mentioned automotive electronic circuit training device, the embodiments of the automotive electronic circuit training system of the present utility model include all the technical solutions of all the embodiments of the above-mentioned automotive electronic circuit training device, and the achieved technical effects are also exactly the same, so they will not be elaborated here.

[0058] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the specification and drawings of the present utility model under the inventive concept of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. An automotive electronic circuit training device, characterized in that: The automotive electronic circuit training device includes a main control circuit, a power management circuit, an analog circuit, a detection circuit, and a prompt circuit; The input end of the power management circuit is electrically connected to the power input end, the controlled end of the power management circuit is electrically connected to the main control circuit, and the power management circuit is used to disconnect the path between the power input end and the analog circuit according to the emergency stop signal output by the main control circuit; The input end of the analog circuit is electrically connected to the output end of the power management circuit. The analog circuit is used to simulate an automotive electronic circuit, and a connection interface is provided at the connection end of each component. The input end of the detection circuit is electrically connected to the analog circuit, and the output end of the detection circuit is electrically connected to the main control circuit. The detection circuit is used to detect the connection status of each component in the analog circuit and output a detection signal to the main control circuit; The input end of the prompt circuit is electrically connected to the main control circuit, and the prompt circuit is used to output a prompt signal according to the prompt control signal output by the main control circuit.

2. The automotive electronic circuit training device according to claim 1, characterized in that: The power management circuit includes a voltage conversion circuit, the input end of the voltage conversion circuit is electrically connected to the power input end, the output end of the voltage conversion circuit is electrically connected to the input end of the analog circuit, and the voltage conversion circuit is used to convert the input first voltage into a second voltage and output it.

3. The automotive electronic circuit training device according to claim 2, characterized in that: The power management circuit also includes a switching circuit, wherein the input end of the switching circuit is electrically connected to the power input end, the controlled end of the switching circuit is electrically connected to the main control circuit, the output end of the switching circuit is electrically connected to the input end of the voltage conversion circuit, and the switching circuit is used to disconnect the path between the power input end and the voltage conversion circuit according to an emergency stop signal output by the main control circuit.

4. The automotive electronic circuit training device according to claim 1, characterized in that: The analog circuit includes at least one of a fan control circuit, a wiper circuit, a glass lifting circuit, a rearview mirror circuit, a lighting circuit, a turn signal light circuit, an ignition circuit, and a stepper motor control circuit.

5. The automotive electronic circuit training device according to claim 1, characterized in that: The prompt circuit is an LED prompt circuit, which is electrically connected to the main control circuit and is used to output a corresponding LED prompt signal according to a prompt control signal output by the main control circuit; Wherein, the LED prompt circuit is provided with at least two different LED prompt circuits.

6. The automotive electronic circuit training device according to claim 1, characterized in that: The automotive electronic circuit training device further includes a touch switch assembly, the touch switch assembly is electrically connected to the main control circuit, the touch switch assembly is arranged on the surface of the automotive electronic circuit training device, and is used to output a trigger signal when triggered; The main control circuit is used to open or close the path between the power input terminal and the power management circuit according to the trigger signal.

7. The automotive electronic circuit training device according to claim 1, characterized in that: The automotive electronic circuit training device further comprises a communication circuit, which is electrically connected to the main control circuit and is used to establish a communication connection between the automotive electronic circuit training device and an external terminal.

8. The automotive electronic circuit training device according to claim 7, characterized in that: The automotive electronic circuit training device further comprises a fault setting circuit, the input end of the fault setting circuit is electrically connected to the main control circuit, the fault setting circuit is electrically connected to the analog circuit, and is used to set a circuit fault in the analog circuit according to a fault setting signal output by the main control circuit; Wherein, the fault setting signal output by the main control circuit is output according to the external terminal control signal input by the communication circuit.

9. An automotive electronic circuit training system, characterized in that: The automotive electronic circuit training system comprises the automotive electronic circuit training device according to any one of claims 1 to 8 and connecting wires, detection equipment, and external terminals.

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