Self-resetting simulation system of vehicle control unit and self-resetting simulation method thereof

Abstract

The invention relates to the technical field of automobile inspection simulation, in particular to a self-resetting simulation system of a vehicle control unit and a self-resetting simulation method of the self-resetting simulation system. The circuit comprises a judgment switch circuit which is used for selecting a positive output low-voltage programmable power supply or a negative output low-voltage programmable power supply as output; the controller assembly is in signal connection with the positive output low-voltage programmable power supply and the negative output low-voltage programmable power supply, and the controller assembly is used for controlling and judging the switching circuit to select the positive output low-voltage programmable power supply and / or the negative output low-voltage programmable power supply as output according to a preset simulation strategy so as to simulate a voltage output curve. According to the application, the positive output low-voltage programmable power supply and the negative output low-voltage programmable power supply are arranged, and the judgment switch circuit is utilized to quickly switch the outputs of the positive output low-voltage programmable power supply and the negative output low-voltage programmable power supply, so that a voltage output curve required by the self-resetting verification of the vehicle control unit can be simulated in real time; and verification conditions are provided for the self-resetting function of the vehicle control unit.

Description

Technical Field

[0001] The present application relates to the technical field of automobile inspection simulation, and in particular to a self-resetting simulation system of a vehicle controller and a self-resetting simulation method thereof. Background Art

[0002] At present, the vehicle control unit (VCU) is the powertrain controller, and its development includes software and hardware design. It is the core control component of the entire car. It collects accelerator pedal signals, brake pedal signals and other component signals, and after making corresponding judgments, it controls the actions of the lower-level component controllers and drives the car. The vehicle controller collects driver driving signals and vehicle status, manages, dispatches, analyzes and calculates network information through the CAN bus, and performs corresponding energy management for different configurations of vehicle models to achieve vehicle drive control, energy optimization control, brake feedback control and network management functions. The VCU controller is the brain of new energy vehicles, and the hardware-in-the-loop of the controller is an indispensable part of the development process. Fault injection is one of the important functions of the controller to carry out hardware-in-the-loop verification. Among them, power supply fault simulation is a necessary condition that affects the normal operation of the controller.

[0003] In the related art, the hardware-in-the-loop test bench mainly uses an adjustable low-voltage programmable power supply for fault verification of the controller's power supply. The power supply fault injection simulates the abnormal power supply of the controller (undervoltage, overvoltage, emergency power-off, etc.) by adjusting the output of the low-voltage programmable power supply in real time. However, the new energy vehicle systems are numerous and complex, and the control switches of each system also have a huge impact on each other in the closed working room, such as the ripple phenomenon. The emergence of ripples causes a large fluctuation in the power supply of the VCU controller, resulting in the self-reset of the VCU controller function. This fault caused a huge threat to life during high-speed driving of the vehicle. In order to suppress the harm of ripples, it is necessary to simulate a set of ripple simulation devices to reproduce the fault and fully verify the controller during the development process. At present, a self-reset verification device based on hardware-in-the-loop simulation of VCU has not been found in the industry. Summary of the invention

[0004] In the related technology, it is difficult for the hardware-in-the-loop test bench to simulate complex voltage output curves (such as ripple phenomena) for fault verification of the power supply of the vehicle controller, resulting in poor results in reproducing faults of the power supply during the fault verification of the vehicle controller.

[0005] The present application provides a self-reset simulation method, device / system, equipment and computer-readable storage medium for a vehicle controller, which can solve the xx technical problems existing in the prior art.

[0006] In a first aspect, an embodiment of the present application provides a self-reset simulation system for a vehicle controller, the vehicle controller self-reset simulation system comprising: a positive output low-voltage programmable power supply, a negative output low-voltage programmable power supply, a judgment switch circuit and a controller component; wherein,

[0007] A judgment switch circuit, which is electrically connected to the positive output low-voltage program-controlled power supply and the negative output low-voltage program-controlled power supply, and the judgment switch circuit is used to select the positive output low-voltage program-controlled power supply or the negative output low-voltage program-controlled power supply as an output;

[0008] A controller component is electrically connected to the judgment switch circuit. The controller component is connected to the positive output low-voltage programmable power supply and the negative output low-voltage programmable power supply signals. The controller component is used to control the judgment switch circuit to select the positive output low-voltage programmable power supply and / or the negative output low-voltage programmable power supply as output according to a preset simulation strategy to simulate a voltage output curve.

[0009] In combination with the first aspect, in one implementation, the judgment switch circuit includes a comparator circuit, and the comparator circuit is electrically connected to the controller component, the positive output low-voltage programmable power supply, and the negative output low-voltage programmable power supply.

[0010] In combination with the first aspect, in one implementation, the comparator circuit output switch is an optocoupler switch.

[0011] In combination with the first aspect, in one implementation, the controller component includes:

[0012] A router, which is connected to the positive output low voltage program-controlled power supply and the negative output low voltage program-controlled power supply signal;

[0013] A control unit is connected to the router signal, the control unit is electrically connected to the input end of the comparator circuit, and the control unit is used to adjust the input end level of the comparator circuit so that the comparator circuit outputs the value of the positive output low-voltage programmable power supply or the value of the negative output low-voltage programmable power supply.

[0014] In combination with the first aspect, in one embodiment, a plurality of delay circuits are provided in the control unit, and the pre-charge capacitance and / or pre-charge resistance of the plurality of delay circuits are different from each other. The control unit can adjust the input level of the comparator circuit by switching different delay circuits.

[0015] In a second aspect, an embodiment of the present application provides a self-reset simulation method for a vehicle controller using a self-reset simulation system in any of the above embodiments, characterized in that:

[0016] Acquire the detected output voltage signal to be measured;

[0017] Setting the controller components according to the output voltage signal to be measured;

[0018] The controller component is used to drive the switch circuit to output a positive output low-voltage programmable power supply and / or a negative output low-voltage programmable power supply according to a preset simulation strategy to obtain a simulated voltage output curve of the vehicle controller self-reset.

[0019] In combination with the second aspect, in one implementation, the setting of the controller component according to the output voltage signal to be measured includes:

[0020] Determine whether the output voltage signal is a single power supply output requirement or a multi-power supply output requirement according to the output voltage signal to be tested;

[0021] The output voltage value and time delay of the positive output low-voltage programmable power supply and / or the negative output low-voltage programmable power supply are set by the controller component according to the power output requirement.

[0022] In combination with the second aspect, in one embodiment, the use of the controller component to drive the switch circuit to output a positive output low-voltage programmable power supply and / or a negative output low-voltage programmable power supply according to a preset simulation strategy includes:

[0023] The comparator circuit of the judgment switch circuit is driven by the controller component to enter the single power supply output mode or the multi-power supply output mode; wherein,

[0024] When the comparator circuit enters the single power supply output mode, the comparator circuit outputs the value of the positive output low-voltage programmable power supply or the negative output low-voltage programmable power supply. When the comparator circuit enters the multi-power supply output mode, the comparator circuit outputs the value of the positive output low-voltage programmable power supply and the negative output low-voltage programmable power supply.

[0025] In combination with the second aspect, in one implementation, the step of driving the comparator circuit of the judgment switch circuit to enter the single power supply output mode through the controller component includes:

[0026] The controller component drives the input level of the comparator circuit of the judgment switch circuit to adjust the output voltage of the comparator circuit; wherein,

[0027] When the comparator circuit inputs a high level, the comparator circuit outputs the value of the positive output low-voltage programmable power supply, and when the comparator circuit inputs a low level, the comparator circuit outputs the value of the negative output low-voltage programmable power supply.

[0028] In combination with the second aspect, in one implementation, the delay of the positive output low-voltage programmable power supply or the negative output low-voltage programmable power supply is set by a controller component according to power output requirements, including:

[0029] The control unit switches different delay circuits according to the output voltage signal to adjust the input terminal level of the comparator circuit of the judgment switch circuit.

[0030] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0031] By setting a positive output low-voltage programmable power supply and a negative output low-voltage programmable power supply, and using a judgment switch circuit to quickly switch the outputs of the positive output low-voltage programmable power supply and the negative output low-voltage programmable power supply, the voltage output curve required for the self-reset verification of the vehicle controller can be simulated in real time, providing verification conditions for the self-reset function of the vehicle controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a flow chart of an embodiment of a self-reset simulation method of a vehicle controller of the present application;

[0033] Figure 2 This is a schematic diagram of the hardware structure of the self-resetting simulation device of the vehicle controller involved in the embodiment of the present application.

[0034] In the figure: 1. Router; 2. Positive output low voltage programmable power supply; 3. Comparator circuit; 4. Negative output low voltage programmable power supply; 5. Control unit. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] In the related technology, it is difficult for the hardware-in-the-loop test bench to simulate complex voltage output curves (such as ripple phenomena) for fault verification of the power supply of the vehicle controller, resulting in poor results in reproducing faults of the power supply during the fault verification of the vehicle controller.

[0037] In the first aspect, the present application provides a self-reset simulation system for a vehicle controller, the self-reset simulation system for the vehicle controller comprising: a positive output low-voltage programmable power supply 2, a negative output low-voltage programmable power supply 4, a judgment switch circuit and a controller component; wherein,

[0038] A judgment switch circuit is electrically connected to the positive output low-voltage programmable power supply 2 and the negative output low-voltage programmable power supply 4, and the judgment switch circuit is used to select the positive output low-voltage programmable power supply 2 or the negative output low-voltage programmable power supply 4 as an output; a controller component is electrically connected to the judgment switch circuit, and the controller component is connected to the signals of the positive output low-voltage programmable power supply 2 and the negative output low-voltage programmable power supply 4, and the controller component is used to control the judgment switch circuit to select the positive output low-voltage programmable power supply 2 and / or the negative output low-voltage programmable power supply 4 as output according to a preset simulation strategy to simulate a voltage output curve.

[0039] It is worth noting that the applicant has found in the course of work that some new energy vehicle systems are numerous and complex, and the control switches of each system are prone to cause large fluctuations (such as ripple phenomenon) in the power supply of the vehicle controller when they are closed, causing the vehicle controller function to self-reset. This fault has caused huge life hazards during high-speed driving of the vehicle. The applicant has found through frequent tests that when the above-mentioned fault occurs, the voltage curve will change greatly, and there is a phenomenon of sudden change to negative voltage output. Therefore, in the self-reset simulation system of this application, a positive output low-voltage programmable power supply 2 and a negative output low-voltage programmable power supply 4 are used, and the two are combined to judge the switch circuit, so that the above-mentioned positive and negative voltage output conversion phenomenon can be quickly simulated.

[0040] The present application provides an optional implementation manner, wherein the judgment switch circuit includes a comparator circuit 3 , and the comparator circuit 3 is electrically connected to the controller component, the positive output low-voltage programmable power supply 2 and the negative output low-voltage programmable power supply 4 .

[0041] It is worth noting that the comparator circuit 3 can compare the input signal and generate an output signal to control the switch to select the value of the positive output low-voltage programmable power supply 2 or the negative output low-voltage programmable power supply 4 as the output. The comparator circuit 3 has a higher gain and bandwidth, which enables the comparator circuit to respond quickly to changes in the input signal.

[0042] Furthermore, in order to improve the response rate, the output switch of the comparator circuit 3 adopts an optical coupler switch.

[0043] It is understandable that conventional output control power supply output control uses ordinary relays, resulting in a hardware output response time of about 100ms. Therefore, the voltage update frequency of the low-voltage programmable power supply is 10Hz, which cannot truly simulate the transient scene of the actual vehicle voltage changing rapidly during operation. In the embodiment of the present application, the optocoupler switch has a fast response speed and can quickly turn on the output.

[0044] In some preferred implementations, the controller component includes: a router 1 and a control unit 5; wherein,

[0045] A router 1 is connected to the positive output low voltage programmable power supply 2 and the negative output low voltage programmable power supply 4 by signal; a control unit 5 is connected to the router 1 by signal, the control unit 5 is electrically connected to the input end of the comparator circuit 3, and the control unit 5 is used to adjust the input end level of the comparator circuit 3 so that the comparator circuit 3 outputs the value of the positive output low voltage programmable power supply 2 or the value of the negative output low voltage programmable power supply 4. Preferably, the control unit 5 includes: a host computer and control software.

[0046] It can be understood that the host computer and the control software communicate and control the positive output low-voltage program-controlled power supply 2 and the negative output low-voltage program-controlled power supply 4 through the router. The host computer and the software control the input of the comparator circuit 3 in real time. When the input is high, the comparator circuit 3 outputs the value of the positive output low-voltage program-controlled power supply 2; when the input is low, the comparator circuit 3 outputs the value of the negative output low-voltage program-controlled power supply 4. Furthermore, in the embodiment of the present application, through the control of the host computer and the code, the voltage output curve required for the self-reset verification of the VCU can be quickly simulated in real time, providing verification conditions for the self-reset function of the vehicle controller.

[0047] In some preferred embodiments, the control unit 5 is provided with a plurality of delay circuits, and the pre-charge capacitance and / or pre-charge resistance of the plurality of delay circuits are different from each other. The control unit 5 can adjust the input level of the comparator circuit 3 by switching different delay circuits.

[0048] It should be noted that the present application may use an RC delay circuit, and the control unit 5 controls the rising curve of the power supply voltage by changing the capacitance and resistance values ​​in the pre-charging circuit part of the RC delay circuit, so as to control the output in real time to simulate the voltage output curve required for the self-reset verification of the vehicle controller.

[0049] In some implementations of the present application, the self-reset analog system includes: a single power supply output mode and a multi-power supply output mode.

[0050] In the single power supply working mode: the self-reset analog system can be set to positive output, then the software sets the input of the comparator circuit 3 to a high level, and the host computer controls the real-time output voltage value and delay; when it is a negative output, the software sets the input of the comparator circuit 3 to a low level, and the host computer controls the real-time output voltage value and delay.

[0051] In the multi-power supply working mode: the power supply output is controlled by writing code on the host computer and control software of the control unit 5. The voltage output value of the programmable power supply at each moment can be set in the programming of the host computer and control software according to the preset control strategy, and the output high and low levels of the comparator circuit 3 are combined with the desired output value, so that the output value of the comparator circuit 3 is switched between the positive output low-voltage programmable power supply 2 and the negative output low-voltage programmable power supply 4. At the same time, different RC delay circuits can be switched through software implementation, and the rising curve of the power supply voltage can be controlled by changing the capacitance and resistance values ​​in the pre-charge circuit. Thus, the real-time control output needs to simulate the voltage output curve required for VCU self-reset verification.

[0052] In a second aspect, the present application provides a self-reset simulation method using the vehicle controller self-reset simulation system in any of the above embodiments, comprising:

[0053] Step S1, obtaining the detected output voltage signal to be measured.

[0054] Specifically, an oscilloscope may be used to detect a voltage curve of the output of the object to be tested.

[0055] Step S2: setting the controller component according to the output voltage signal to be measured.

[0056] Step S2 includes:

[0057] Step S2a: first determine whether the output voltage signal is a single power supply output requirement or a multi-power supply output requirement according to the output voltage signal to be simulated.

[0058] Specifically, the output voltage signal is judged as a single power supply output requirement or a multi-power supply output requirement according to the output voltage signal to be measured; the output voltage value and delay of the positive output low-voltage programmable power supply 2 and / or the negative output low-voltage programmable power supply 4 are set according to the power supply output requirement through the controller component.

[0059] Step S2b: setting the output voltage value and time delay of the positive output low-voltage programmable power supply 2 and / or the negative output low-voltage programmable power supply 4 according to the power output requirements through the controller component.

[0060] Step S3, using the controller component to drive the switch circuit to output the positive output low-voltage programmable power supply 2 and / or the negative output low-voltage programmable power supply 4 according to the preset simulation strategy, so as to obtain a simulated voltage output curve of the vehicle controller self-reset.

[0061] Specifically, in the single power supply output mode: the comparator circuit 3 of the judgment switch circuit is driven by the controller component to enter the single power supply output mode or the multi-power supply output mode; wherein,

[0062] When the comparator circuit 3 enters the single power supply output mode, the comparator circuit 3 outputs the value of the positive output low voltage program-controlled power supply 2 or the negative output low voltage program-controlled power supply 4. When the comparator circuit 3 enters the multi-power supply output mode, the comparator circuit 3 outputs the value of the positive output low voltage program-controlled power supply 2 and the negative output low voltage program-controlled power supply 4.

[0063] Specifically, the above step S3 includes: a single power supply output mode and a multi-power supply output mode; wherein,

[0064] In the single power supply output mode: the controller component drives the input level of the comparator circuit 3 of the judgment switch circuit to adjust the output voltage of the comparator circuit 3; wherein,

[0065] When the comparator circuit 3 inputs a high level, the comparator circuit 3 outputs the value of the positive output low-voltage programmable power supply 2 , and when the comparator circuit 3 inputs a low level, the comparator circuit 3 outputs the value of the negative output low-voltage programmable power supply 4 .

[0066] In the multi-power output mode: the controller component drives the input level of the comparator circuit 3 of the judgment switch circuit to adjust the output voltage of the comparator circuit 3; wherein,

[0067] The controller component adjusts the input of the comparator circuit 3 in accordance with the preset control strategy so that the output value of the comparator circuit 3 switches between the value of the negative output low-voltage programmable power supply 4 and the value of the positive output low-voltage programmable power supply 2, thereby simulating the voltage output curve under complex requirements.

[0068] Furthermore, the control unit 5 can switch different delay circuits according to the output voltage signal to adjust the input level of the comparator circuit 3, thereby achieving the purpose of controlling the positive or negative output voltage and adjusting the output value.

[0069] In a third aspect, an embodiment of the present application also provides a self-resetting simulation device for a vehicle controller.

[0070] Among them, the functional implementation of each module in the above-mentioned self-reset simulation device of the whole vehicle controller corresponds to the various steps in the above-mentioned self-reset simulation method embodiment of the whole vehicle controller, and its functions and implementation processes will not be repeated here one by one.

[0071] In a fourth aspect, an embodiment of the present application provides a self-resetting simulation device for a vehicle controller. The self-resetting simulation device for the vehicle controller can be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.

[0072] Reference Figure 2 , Figure 2The hardware structure diagram of the self-reset simulation device of the vehicle controller involved in the embodiment of the present application is shown in FIG. In the embodiment of the present application, the self-reset simulation device of the vehicle controller may include a processor, a memory, a communication interface and a communication bus.

[0073] The communication bus may be of any type and is used to interconnect the processor, the memory, and the communication interface.

[0074] The communication interface includes input / output (I / O) interface, physical interface and logical interface, etc., which are used to realize the interconnection of devices inside the self-resetting analog device of the vehicle controller, and the interface used to realize the interconnection between the self-resetting analog device of the vehicle controller and other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, a fiber optic interface, an ATM interface, etc.; the user device can be a display, a keyboard, etc.

[0075] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0076] The processor may be a general-purpose processor, and the general-purpose processor may call the self-reset simulation program of the vehicle controller stored in the memory, and execute the self-reset simulation method of the vehicle controller provided in the embodiment of the present application. For example, the general-purpose processor may be a central processing unit (CPU). Among them, the method executed when the self-reset simulation program of the vehicle controller is called may refer to the various embodiments of the self-reset simulation method of the vehicle controller of the present application, which will not be repeated here.

[0077] Those skilled in the art will understand that Figure 2 The hardware structure shown in the figure does not constitute a limitation on the present application, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0078] In a fifth aspect, an embodiment of the present application also provides a readable storage medium.

[0079] The readable storage medium of the present application stores a self-reset simulation program of the vehicle controller, wherein when the self-reset simulation program of the vehicle controller is executed by the processor, the steps of the self-reset simulation method of the vehicle controller as described above are implemented.

[0080] Among them, the method implemented when the self-reset simulation program of the vehicle controller is executed can refer to the various embodiments of the self-reset simulation method of the vehicle controller of the present application, and will not be repeated here.

[0081] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0082] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present application.

[0083] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to different types.

[0084] In the description of the embodiments of the present application, "exemplary", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.

[0085] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; the “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0086] In some processes described in the embodiments of the present application, multiple operations or steps that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.

[0087] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A self-reset simulation system for a vehicle controller, characterized in that: The vehicle controller self-reset simulation system comprises: Positive output low voltage programmable power supply (2); Negative output low voltage programmable power supply (4); a judgment switch circuit, which is electrically connected to the positive output low-voltage programmable power supply (2) and the negative output low-voltage programmable power supply (4), and the judgment switch circuit is used to select the positive output low-voltage programmable power supply (2) or the negative output low-voltage programmable power supply (4) as an output; A controller component is electrically connected to the judgment switch circuit, and the controller component is connected to the positive output low-voltage programmable power supply (2) and the negative output low-voltage programmable power supply (4) signals. The controller component is used to control the judgment switch circuit to select the positive output low-voltage programmable power supply (2) and / or the negative output low-voltage programmable power supply (4) as output according to a preset simulation strategy to simulate a voltage output curve.

2. The self-reset simulation system of the vehicle controller as claimed in claim 1, characterized in that: The judgment switch circuit comprises a comparator circuit (3), and the comparator circuit (3) is electrically connected to the controller component, the positive output low-voltage programmable power supply (2) and the negative output low-voltage programmable power supply (4).

3. The self-reset simulation system of the vehicle controller as claimed in claim 2, characterized in that: The output switch of the comparator circuit (3) is an optocoupler switch.

4. The self-reset simulation system of the vehicle controller as claimed in claim 2, characterized in that: The controller assembly comprises: A router (1) connected to the positive output low voltage programmable power supply (2) and the negative output low voltage programmable power supply (4) by signal; A control unit (5) is connected to the router (1) signal, the control unit (5) is electrically connected to the input end of the comparator circuit (3), and the control unit (5) is used to adjust the input end level of the comparator circuit (3) so that the comparator circuit (3) outputs the value of the positive output low-voltage programmable power supply (2) or the value of the negative output low-voltage programmable power supply (4).

5. The self-reset simulation system of the vehicle controller as claimed in claim 4, characterized in that: The control unit (5) is provided with a plurality of delay circuits, and the pre-charge capacitance and / or pre-charge resistance of the plurality of delay circuits are different from each other. The control unit (5) can adjust the input terminal level of the comparator circuit (3) by switching different delay circuits.

6. A method for simulating a self-reset of a vehicle controller using the self-reset simulation system of the vehicle controller as claimed in claim 1, characterized in that: Acquire the detected output voltage signal to be measured; Setting the controller components according to the output voltage signal to be measured; A controller component is used to drive a switch circuit to output a positive output low-voltage programmable power supply (2) and / or a negative output low-voltage programmable power supply (4) according to a preset simulation strategy, so as to obtain a simulated vehicle controller self-reset voltage output curve.

7. The self-reset simulation method of the vehicle controller as claimed in claim 6, characterized in that: The step of setting the controller component according to the output voltage signal to be measured comprises: Determine whether the output voltage signal is a single power supply output requirement or a multi-power supply output requirement according to the output voltage signal to be tested; The output voltage value and time delay of the positive output low-voltage programmable power supply (2) and / or the negative output low-voltage programmable power supply (4) are set by a controller component according to power output requirements.

8. The self-reset simulation method of the vehicle controller as claimed in claim 7, characterized in that: The method of using a controller component to drive a switch circuit to output a positive output low-voltage programmable power supply (2) and / or a negative output low-voltage programmable power supply (4) according to a preset simulation strategy comprises: The comparator circuit (3) of the judgment switch circuit is driven by the controller component to enter a single power supply output mode or a multi-power supply output mode; wherein, When the comparator circuit (3) enters a single power supply output mode, the comparator circuit (3) outputs the value of a positive output low-voltage programmable power supply (2) or a negative output low-voltage programmable power supply (4); when the comparator circuit (3) enters a multi-power supply output mode, the comparator circuit (3) outputs the value of a positive output low-voltage programmable power supply (2) and a negative output low-voltage programmable power supply (4).

9. The self-reset simulation method of the vehicle controller as claimed in claim 8, characterized in that: The controller component drives the comparator circuit (3) of the judgment switch circuit to enter the single power supply output mode, comprising: The controller component drives the input level of the comparator circuit (3) of the judgment switch circuit to adjust the output voltage of the comparator circuit (3); wherein, When a high level is input to the comparator circuit (3), the comparator circuit (3) outputs the value of the positive output low-voltage programmable power supply (2); when a low level is input to the comparator circuit (3), the comparator circuit (3) outputs the value of the negative output low-voltage programmable power supply (4).

10. The self-reset simulation method of the vehicle controller as claimed in claim 7, characterized in that: The method of setting the time delay of the positive output low-voltage programmable power supply (2) or the negative output low-voltage programmable power supply (4) through a controller component according to power output requirements includes: A control unit (5) switches different delay circuits according to the output voltage signal to adjust the input terminal level of the comparator circuit (3) of the judgment switch circuit.

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