Vehicle running state simulation device and method

Abstract

The embodiment of the invention discloses a vehicle running state simulation device and method.The vehicle running state simulation device comprises a shell, a motor, a coding magnetic ring, a detection sensor and a motor controller, and in the using process, when a vehicle is in a static state, the motor is driven by the coding magnetic ring when the vehicle is maintained or subjected to a performance test; the vehicle running state simulation device can be connected to a whole vehicle controller of a vehicle, the motor controller controls the motor to rotate, the motor can drive the coding magnetic ring to rotate, the detection sensor can detect the rotating speed of the coding magnetic ring, and then the detection sensor is connected with the whole vehicle controller. The signal output by the detection sensor can replace the detection result of the wheel speed sensor, when the vehicle is in the static state, rotation of the coding magnetic ring is equivalent to rotation of the wheel, the response result of the vehicle can be detected in the static state, the cost is low, safety is higher, and the vehicle performance detection and maintenance cost can be greatly reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of vehicle maintenance and repair, and in particular to a vehicle operating status simulation device and method. Background Art

[0002] During vehicle maintenance, repair and performance, it is often necessary to monitor the status of the vehicle in its actual operating state. During the operation of the vehicle, its various systems and components are working dynamically. By testing in the operating state, the technical condition and performance of the vehicle can be monitored in real time, so as to timely discover potential faults or observe the status of the vehicle after repair and maintenance. However, since the vehicle is in actual operation, on the one hand, some data is difficult to collect and requires expensive equipment to cooperate; on the other hand, there is a certain risk in actually starting a vehicle with potential faults. Summary of the invention

[0003] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. This part of the invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, a first aspect of the present invention provides a vehicle operating state simulation device.

[0006] A second aspect of the present invention provides a vehicle fault state detection method.

[0007] In view of this, according to a first aspect of an embodiment of the present application, a vehicle running state simulation device is proposed, comprising:

[0008] A housing, wherein a receiving space is formed in the housing, and a first through hole and a second through hole are formed in the housing;

[0009] a motor, wherein the motor is arranged in the accommodation space;

[0010] An encoding magnetic ring, wherein the encoding magnetic ring is arranged at an output end of the motor;

[0011] A detection sensor, the detection sensor is arranged in the motor and is used to detect the rotation speed of the encoding magnetic ring, and the output end of the detection sensor extends out of the housing through the first through hole;

[0012] A motor controller, a cable of which passes through the second through hole and is connected to the motor, and is used to control the start and stop and the rotation speed of the motor.

[0013] In a feasible implementation manner, the vehicle running state simulation device further includes: a cover body, the cover body being connected to the housing and used to cover the accommodation space;

[0014] Wherein, the cover and the shell are both made of metal material.

[0015] In a feasible implementation manner, the vehicle running state simulation device further includes:

[0016] The cover body is connected to the bottom plate of the shell, and the cover body is arranged on the motor and the encoding magnetic ring.

[0017] In a feasible implementation manner, there are multiple detection sensors, and the multiple detection sensors are symmetrically arranged around the circumference of the encoding magnetic ring.

[0018] According to a second aspect of an embodiment of the present application, a vehicle fault state detection method is proposed, which is applied to a vehicle running state simulation device as described in any of the above technical solutions. The vehicle fault state detection method includes:

[0019] When the vehicle is stationary, the output end of the detection sensor of the vehicle running state simulation device is connected to the vehicle controller;

[0020] The motor speed is controlled by a motor controller, and when the vehicle is in a stationary state, the wheel motion state of the vehicle is simulated, so that the vehicle is in a simulated motion state;

[0021] When the vehicle is in a simulated motion state, the vehicle's fault information is detected.

[0022] In a feasible implementation manner, the step of connecting the output end of the detection sensor of the vehicle running state simulation device to the vehicle controller when the vehicle is stationary includes:

[0023] The wheel speed sensor connected to the vehicle controller is disassembled, and the output end of the detection sensor is connected to the vehicle controller instead of the wheel speed sensor.

[0024] In a feasible implementation manner, the step of detecting the fault information of the vehicle when the vehicle is in a simulated motion state includes:

[0025] When the vehicle's auxiliary brake is in a faulty state;

[0026] Drive obstacles closer to the vehicle's multiple cameras and radars in sequence to detect the operating status of the automatic emergency braking system;

[0027] If the vehicle is close to all cameras and radars and no auxiliary braking is performed, the automatic emergency braking system is judged to be faulty. If the vehicle is close to some cameras or radars and auxiliary braking is performed, the detection end is judged to be faulty.

[0028] In a feasible implementation manner, the step of detecting the fault information of the vehicle when the vehicle is in a simulated motion state further includes:

[0029] When the vehicle is stationary, the motor controller is used to increase the speed of the motor, so that the vehicle is in an accelerated motion state;

[0030] Under static conditions, detect the stiffness and damping of the suspension system to determine the fault state of the suspension system; and / or

[0031] When the vehicle is stationary, the motor speed is changed through the motor controller. At different speeds, the power assistance of the electric power steering is detected to determine the fault state of the electric power steering.

[0032] In a feasible implementation manner, the step of detecting the fault information of the vehicle when the vehicle is in a simulated motion state further includes:

[0033] The motor speed is reduced through the motor controller to simulate emergency braking of the vehicle when the vehicle is stationary;

[0034] Detect the reaction status of the anti-lock braking system and determine the fault status of the anti-lock braking system.

[0035] In a feasible implementation manner, each vehicle is connected to a plurality of the vehicle running state simulation devices, and the step of controlling the speed of the motor by the motor controller to simulate the wheel motion state of the vehicle when the vehicle is in a stationary state so that the vehicle is in a simulated motion state includes:

[0036] The vehicle is in motion and the operating parameters of the vehicle under different motion environments are collected;

[0037] Building a database based on the correspondence between the operating parameters and the different wheel bodies of the vehicle;

[0038] The motor controller controls the rotation speed of the motors of multiple vehicle running state simulation devices based on a database, and simulates the wheel motion state of the vehicle when the vehicle is stationary, so that the vehicle is in a simulated motion state.

[0039] Compared with the prior art, the present invention has at least the following beneficial effects:

[0040] The vehicle operation status simulation device provided in the embodiment of the present application includes a shell, a motor, an encoding magnetic ring, a detection sensor and a motor controller. During use, when the vehicle is repaired or the performance is tested, when the vehicle is in a stationary state, the vehicle operation status simulation device can be connected to the vehicle control unit (VCU) of the vehicle. Specifically, the output end of the detection sensor of the vehicle operation status simulation device is connected to the vehicle controller, and the motor rotation can be controlled by the motor controller, and the motor can drive the encoding magnetic ring to rotate. The rotation speed of the encoding magnetic ring can be detected by the detection sensor, and the detection sensor is then connected to the vehicle controller. The signal output by the detection sensor can replace the detection result of the wheel speed sensor, and then the rotation speed of the motor is adjusted by the motor controller. The detection result at the vehicle end can be equivalent to the wheel speed, and then different motion states of the vehicle can be simulated when the vehicle is stationary. Then, the response results of the components of the vehicle related to the wheel speed are detected, and the vehicle fault can be checked, which is convenient for maintenance, repair and performance testing of the vehicle. The vehicle operation status simulation device provided in the embodiment of the present application can, when the vehicle is stationary, use the rotation of the encoding magnetic ring to equate to the rotation of the wheels, and can statically detect the response results of the vehicle. It is low-cost and safer, and can significantly reduce the cost of vehicle performance testing and maintenance.

[0041] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0043] Figure 1 A schematic structural diagram of a vehicle operating state simulation device according to an embodiment of the present application;

[0044] Figure 2 A schematic structural diagram of a hidden cover of a vehicle running state simulation device according to an embodiment of the present application;

[0045] Figure 3 A schematic structural diagram of a hidden cover of a vehicle running state simulation device according to an embodiment of the present application;

[0046] Figure 4A schematic flowchart of the steps of a vehicle fault status detection method according to an embodiment of the present application.

[0047] in, Figures 1 to 3 The corresponding relationship between the reference numerals and the component names is as follows:

[0048] 110 housing, 120 motor, 130 encoding magnetic ring, 140 detection sensor, 150 cover body, 160 cover body;

[0049] 111 is a receiving space, 112 is a first through hole, and 113 is a second through hole. DETAILED DESCRIPTION

[0050] In the following description, a large number of specific details are given to provide a more thorough understanding of the technical solutions provided by the present invention. However, it is obvious to those skilled in the art that the technical solutions provided by the present invention can be implemented without one or more of these details.

[0051] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, integral bodies, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integral bodies, steps, operations, elements, components and / or combinations thereof.

[0052] Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the concept of these exemplary embodiments to those of ordinary skill in the art.

[0053] like Figures 1 to 3As shown, according to the first aspect of an embodiment of the present application, a vehicle running state simulation device is proposed, including: a shell 110, a housing space 111 is formed in the shell 110, and a first through hole 112 and a second through hole 113 are opened on the shell 110; a motor 120, the motor 120 is arranged in the housing space 111; an encoding magnetic ring 130, the encoding magnetic ring 130 is arranged at the output end of the motor 120; a detection sensor 140, the detection sensor 140 is arranged in the motor 120, and is used to detect the rotation speed of the encoding magnetic ring 130, and the output end of the detection sensor 140 extends out of the shell 110 through the first through hole 112; a motor 120 controller, the cable of the motor 120 controller is connected to the motor 120 through the second through hole 113, and is used to control the start and stop and the rotation speed of the motor 120.

[0054] The vehicle running state simulation device provided in the embodiment of the present application includes a housing 110, a motor 120, an encoding magnetic ring 130, a detection sensor 140 and a motor 120 controller. During use, when the vehicle is repaired or the performance is tested, the vehicle running state simulation device can be connected to the vehicle controller (VehicleControl) of the vehicle when the vehicle is in a stationary state. Unit, VCU), specifically, the output end of the detection sensor 140 of the vehicle running state simulation device is connected to the vehicle controller, and the motor 120 can be controlled to rotate by the motor 120 controller, and the motor 120 can drive the encoding magnetic ring 130 to rotate, and the rotation speed of the encoding magnetic ring 130 can be detected by the detection sensor 140, and the detection sensor 140 is then connected to the vehicle controller, and the signal output by the detection sensor 140 can replace the detection result of the wheel speed sensor, and then the rotation speed of the motor 120 is adjusted by the motor 120 controller, and the detection result at the vehicle end can be equivalent to the wheel speed, and then the different motion states of the vehicle can be simulated when the vehicle is stationary, and then the response results of the components of the vehicle related to the wheel speed can be detected, and the vehicle fault can be checked, which is convenient for maintenance, repair and performance testing of the vehicle. The vehicle running state simulation device provided in the embodiment of the present application can be equivalent to the rotation of the wheel through the rotation of the encoding magnetic ring 130 when the vehicle is stationary, and can detect the response result of the vehicle in a static state, with low cost and more safety, and can greatly reduce the cost of vehicle performance detection and maintenance.

[0055] like Figures 1 to 3 As shown, in a feasible implementation, the vehicle running state simulation device further includes: a cover 150, which is connected to the housing 110 and is used to cover the accommodation space 111; wherein the cover 150 and the housing 110 are both made of metal materials. Based on this, the magnetic shielding effect of the vehicle running state simulation device can be improved, the influence of other magnetic fields on the detection results of the detection sensor 140 can be reduced, and the simulation accuracy can be improved.

[0056] like Figures 1 to 3 As shown, in a feasible implementation, the vehicle running state simulation device further includes: a cover 160, the cover 160 is connected to the bottom plate of the housing 110, and the cover 160 is covered on the motor 120 and the encoding magnetic ring 130. Such a setting can encapsulate the motor 120 and the encoding magnetic ring 130, which can increase the service life of the vehicle running state simulation device and reduce the probability of debris entering the motor 120 and the encoding magnetic ring 130.

[0057] like Figures 1 to 3 As shown, in a feasible implementation, there are multiple detection sensors 140, and the multiple detection sensors 140 are symmetrically arranged around the encoding magnetic ring 130. Such an arrangement can better simulate the actual operation of the vehicle, further improve the efficiency of vehicle fault troubleshooting, facilitate the detection of vehicle performance, and can promptly detect when a fault occurs in the detection sensor 140, thereby ensuring the detection efficiency.

[0058] like Figure 4 As shown, according to the second aspect of the embodiment of the present application, a vehicle fault state detection method is proposed, which is applied to a vehicle running state simulation device as in any of the above technical solutions, and the vehicle fault state detection method includes:

[0059] Step 201: When the vehicle is stationary, the output end of the detection sensor of the vehicle running state simulation device is connected to the vehicle controller;

[0060] Step 202: Control the speed of the motor through the motor controller, and simulate the wheel motion state of the vehicle when the vehicle is in a stationary state, so that the vehicle is in a simulated motion state;

[0061] Step 203: When the vehicle is in a simulated motion state, detect fault information of the vehicle.

[0062] The vehicle fault state detection method provided by the embodiment of the present application can power on the vehicle first during the vehicle fault troubleshooting process, disconnect the connection between the vehicle controller and the wheel speed sensor, and connect the detection sensor 140 of the vehicle running state simulation device to the vehicle controller instead of the wheel speed sensor. During the entire troubleshooting process, the vehicle can be controlled to be in a stationary state, but the speed of the motor 120 is adjusted by controlling the motor 120 controller, which is equivalent to the change of the wheel speed. Based on the change of the vehicle speed, the response results of the relevant components of the detection results of the dynamic change of the vehicle and wheel speed are obtained, and then the vehicle fault can be checked. During the entire detection process, the vehicle is in a stationary state, and the cost of each component included in the vehicle running state simulation device used is very low, and the vehicle fault can be checked at low cost and high safety, and the vehicle performance can be tested at low cost and high safety. It is low cost. It is particularly used to detect the state of the vehicle that has been repaired, and can also be used for testing the performance in the vehicle design process. It greatly improves the efficiency of maintenance and design, can ensure safety, does not need to use special sites and dummies, and greatly reduces costs.

[0063] like Figures 1 to 3 As shown, in a feasible implementation manner, when the vehicle is stationary, the step of connecting the output end of the detection sensor 140 of the vehicle running state simulation device to the vehicle controller includes:

[0064] The wheel speed sensor connected to the vehicle controller is disassembled, and the output end of the detection sensor 140 is connected to the vehicle controller instead of the wheel speed sensor.

[0065] In this technical solution, a connection method for the detection sensor 140 is further provided. The wheel speed sensor is first disassembled through the vehicle controller, and then the output end of the detection sensor 140 is connected to the vehicle controller. Based on this, the vehicle controller will use the result output by the detection sensor 140 as the wheel speed of the vehicle. When the vehicle is started and stationary, other auxiliary components of the vehicle will be linked based on the output result of the detection sensor 140. The entire detection process is safer, and the response results of the components linked to the wheel speed can be detected in a stationary state. The results are easy to collect and the collection of the results is more accurate, which can improve the accuracy of maintenance and repair, and can improve the accuracy of performance detection.

[0066] It is understandable that the speed of the motor 120 can be adjusted through the motor 120 controller, the speed of the encoding magnetic ring 130 can be adjusted, the output result of the detection sensor 140 can be adjusted, and then different movement states of the vehicle wheels can be simulated.

[0067] It is understandable that, when simulating, each vehicle can be connected to a plurality of vehicle running state simulation devices, thereby simulating the movement state of each wheel, and the vehicle detection can be more complete.

[0068] In a feasible implementation manner, when the vehicle is in a simulated motion state, the step of detecting the fault information of the vehicle includes:

[0069] When the vehicle's auxiliary brake is in a faulty state;

[0070] Drive obstacles closer to the vehicle's multiple cameras and radars to detect the operating status of the automatic emergency braking system (AEB);

[0071] If the vehicle is close to all cameras and radars and no auxiliary braking is performed, the automatic emergency braking system is judged to be faulty. If the vehicle is close to some cameras or radars and auxiliary braking is performed, the detection end is judged to be faulty.

[0072] In this technical solution, during vehicle maintenance, if a fault is found in the auxiliary braking function of the vehicle, the vehicle operation state simulation device can be connected to the vehicle controller when the vehicle is in a stationary state, and the output result of the detection sensor 140 of the vehicle operation state simulation device is equivalent to the wheel speed. In this case, the wheel can be put into a simulated motion state, and at this time, the staff can hold an obstacle close to the vehicle to test the reaction state of the vehicle's automatic emergency braking system (AEB). Specifically, the obstacle can be held close to the vehicle's radar and camera, specifically close to different radars and cameras of the vehicle, and the reaction state of the automatic emergency braking system (AEB) can be obtained when the vehicle is in a static state. When the obstacle is close to all radars and cameras, and the automatic emergency braking system (AEB) has no feedback, then it can be considered that the automatic emergency braking system (AEB) has a fault and the automatic emergency braking system (AEB) should be repaired. If the automatic emergency braking system (AEB) does not respond when approaching a certain radar or camera, but has feedback when approaching other radars or cameras, then it can be considered that there is a fault in one of the vehicle's cameras or radars.

[0073] Specifically, since the vehicle is stationary, obstacles can be more targeted when approaching the vehicle, such as approaching only a certain radar or camera of the vehicle, making detection more targeted. At the same time, since the vehicle is stationary, even if the automatic emergency braking system (AEB) has no feedback, it will not trigger safety construction. Compared with the traditional technology of testing the automatic emergency braking system (AEB) in the actual moving state of the vehicle, the safety of detection is greatly improved.

[0074] In a feasible implementation manner, when the vehicle is in a simulated motion state, the step of detecting the fault information of the vehicle further includes:

[0075] When the vehicle is stationary, the speed of the motor 120 is increased by the motor 120 controller, so that the vehicle is in an accelerated motion state;

[0076] In static state, the stiffness and damping of the suspension system are detected to determine the fault state of the suspension system.

[0077] In this technical solution, the vehicle fault state detection method can also test the suspension system of the vehicle. When the vehicle is stationary, the speed of the motor 120 is adjusted by the motor 120 controller. For example, if the speed of the motor 120 is controlled to increase, it will be equivalent to an increase in the wheel speed of the vehicle. Therefore, the suspension system can be intuitively observed and detected in a static state. For example, the stiffness and damping of the suspension system can be detected, and the relationship between the wheel speed of the vehicle and the stiffness and damping of the suspension system can be clearly constructed, so that the fault of the suspension system can be detected. At the same time, the constructed relationship between the wheel speed and the stiffness and damping of the suspension system can also serve the design and performance testing of the vehicle, providing more and more intuitive possibilities for vehicle design.

[0078] It is understood that the suspension system may include an air suspension system: compressed air is formed by an air compressor, and the stiffness of the suspension is changed by adjusting the amount and pressure of compressed air in the air spring. The air suspension system can not only adjust the stiffness, but also adjust the height of the vehicle body, thereby improving the vehicle's passability and stability. Hydraulic suspension system: automatic conversion of suspension state is achieved through the combination of electronic intelligence and hydraulic flexibility technology. The hydraulic suspension system can automatically adjust the vehicle height and suspension stiffness according to the road conditions and driving style, providing a variety of driving experiences such as comfort mode and sports mode. Electromagnetic suspension system: rapid adjustment of suspension stiffness is achieved using electromagnetic reaction. The electromagnetic suspension system can respond to road changes in a very short time (such as 1 millisecond) and adjust the suspension stiffness, thereby maintaining vehicle stability and improving handling. Electronic hydraulic adjustable suspension (CDC): also known as continuous damping control system, which reads road condition information through electronic sensors and adjusts the shock absorber in real time. The CDC system can independently control the suspension damping of each wheel, achieve precise adjustment of stiffness, and improve the stability of the vehicle when driving at high speed and cornering. The vehicle fault status detection method provided in the embodiment of the present application can test the performance of different suspension systems by using a vehicle operation status simulation device.

[0079] In a feasible implementation, when the vehicle is in a simulated motion state, the step of detecting the vehicle's fault information also includes: when the vehicle is stationary, changing the speed of the motor 120 through the motor 120 controller, detecting the strength of the electric power steering (EPS) at different speeds, and determining the fault state of the electric power steering (EPS).

[0080] In this technical solution, it is considered that the vehicle electric power steering (EPS) system will adjust the strength of the steering assistance according to the vehicle speed. When driving at low speed, the steering assistance will be greater to reduce the steering burden of the driver; while when driving at high speed, the steering assistance will be reduced to improve the vehicle's handling stability and driving safety. When the vehicle electric power steering (EPS) fails or the feedback is inaccurate, it will seriously affect the driving and control sense of the vehicle, and even cause a safety accident. Therefore, the vehicle fault state detection method can adjust the rotation speed of the encoding magnetic ring 130 through the vehicle running state simulation device, and then adjust the wheel speed of the vehicle equivalently. At different wheel speeds, the strength of the electric power steering can be detected when the vehicle is in a stationary state, and then the relationship between the strength of the electric power steering and the vehicle wheel speed can be constructed, which can more accurately and efficiently detect the performance of the vehicle electric power steering (EPS), and facilitate the troubleshooting and debugging of the vehicle electric power steering (EPS).

[0081] In a feasible implementation manner, when the vehicle is in a simulated motion state, the step of detecting the fault information of the vehicle further includes:

[0082] By using the motor 120 controller, the rotation speed of the motor 120 is reduced to simulate emergency braking of the vehicle when the vehicle is stationary;

[0083] Detect the reaction status of the anti-lock braking system (ABS) and determine the fault status of the anti-lock braking system.

[0084] In this technical solution, it is considered that the anti-lock brake system (ABS) can make the wheels roll and slide at the same time, ensuring that the adhesion between the wheels and the ground reaches the maximum value, thereby shortening the braking distance. The locking of the front wheels will cause the vehicle to lose its steering ability, and the locking of the rear wheels will easily cause side slipping. ABS can effectively avoid these situations and ensure that the driver can control the direction when braking. When the ABS fails, the possibility of vehicle accident risk will increase. Therefore, the vehicle fault state detection method provided in the embodiment of the present application can reduce the speed of the motor 120 in a very short time through the motor 120 controller, and then the detection result of the detection sensor 140 will also be reduced in a very short time, and then the emergency braking state of the vehicle can be simulated, and the feedback result of the anti-lock brake system (ABS) can be detected in a static state, so that the detection of the anti-lock brake system (ABS) is more efficient and accurate.

[0085] In a feasible implementation manner, each vehicle is connected to a plurality of vehicle running state simulation devices, and the speed of the motor 120 is controlled by the motor 120 controller. When the vehicle is in a stationary state, the wheel motion state of the vehicle is simulated, and the steps of making the vehicle in a simulated motion state include:

[0086] The vehicle is in motion and the operating parameters of the vehicle under different motion environments are collected;

[0087] Building a database based on the correspondence between the operating parameters and the different wheel bodies of the vehicle;

[0088] The controller controlling the motor 120 controls the rotation speed of the motor 120 of multiple vehicle running state simulation devices based on the database, and simulates the wheel movement state of the vehicle when the vehicle is in a stationary state, so that the vehicle is in a simulated motion state.

[0089] In this technical solution, specific steps for simulating the motion state of the wheels of the vehicle are further provided, and the vehicle can be driven in actual situations to place the vehicle in different motion environments, including but not limited to different wheel speeds, different terrains, acceleration states, deceleration states, turning states, emergency braking states, etc. The wheel speeds of different wheels of the vehicle in each state can be known, and the relationship between the wheel speeds and different states can be constructed. This relationship is stored in a database, and the motor 120 controller controls the speed of the motor 120 based on this relationship, which can better simulate the motion state of the wheels and can better simulate the motion state of the vehicle when the vehicle is stationary.

[0090] In some examples, the motor 120 controller may be a control device, and a computer program may be embedded in a storage medium of the motor 120 controller to control the motor 120 .

[0091] In some examples, the control device may also include a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a WI-FI interface), etc.

[0092] In an exemplary embodiment, the control device may further include: an input / output interface and a display device, wherein each functional unit may communicate with each other via a bus. The memory stores a computer program, and the processor is used to execute the program stored in the memory and execute the method in the above embodiment.

[0093] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the physical device of the method, and supports the operation of the information processing program and other software and / or programs. The network communication module is used to realize the communication between the components inside the storage medium, and the communication with other hardware and software in the information processing physical device.

[0094] Through the description of the above implementation methods, those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform, or by hardware.

[0095] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0096] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0097] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0098] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0099] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vehicle running state simulation device, characterized in that: include: A housing, wherein a receiving space is formed in the housing, and a first through hole and a second through hole are formed in the housing; a motor, wherein the motor is arranged in the accommodation space; An encoding magnetic ring, wherein the encoding magnetic ring is arranged at an output end of the motor; A detection sensor, the detection sensor is arranged in the motor and is used to detect the rotation speed of the encoding magnetic ring, and the output end of the detection sensor extends out of the housing through the first through hole; A motor controller, a cable of which passes through the second through hole and is connected to the motor, and is used to control the start and stop and the rotation speed of the motor.

2. The vehicle running state simulation device according to claim 1, characterized in that: Also includes: A cover body, the cover body is connected to the shell and is used to cover the accommodating space; Wherein, the cover and the shell are both made of metal material.

3. The vehicle running state simulation device according to claim 1, characterized in that: Also includes: The cover body is connected to the bottom plate of the shell, and the cover body is arranged on the motor and the encoding magnetic ring.

4. The vehicle running state simulation device according to claim 1, characterized in that: There are multiple detection sensors, and the multiple detection sensors are symmetrically arranged on the circumference of the encoding magnetic ring.

5. A vehicle fault state detection method, characterized in that: Applied to the vehicle running state simulation device as described in any of the above technical solutions, the vehicle fault state detection method includes: When the vehicle is stationary, the output end of the detection sensor of the vehicle running state simulation device is connected to the vehicle controller; The motor speed is controlled by a motor controller, and when the vehicle is in a stationary state, the wheel motion state of the vehicle is simulated, so that the vehicle is in a simulated motion state; When the vehicle is in a simulated motion state, the vehicle's fault information is detected.

6. The vehicle fault state detection method according to claim 5, characterized in that: The step of connecting the output end of the detection sensor of the vehicle running state simulation device to the vehicle controller when the vehicle is stationary includes: The wheel speed sensor connected to the vehicle controller is disassembled, and the output end of the detection sensor is connected to the vehicle controller instead of the wheel speed sensor.

7. The vehicle fault state detection method according to claim 6, characterized in that: The step of detecting the fault information of the vehicle when the vehicle is in a simulated motion state comprises: When the vehicle's auxiliary brake is in a faulty state; Drive obstacles closer to the vehicle's multiple cameras and radars in sequence to detect the operating status of the automatic emergency braking system; If the vehicle is close to all cameras and radars and no auxiliary braking is performed, the automatic emergency braking system is judged to be faulty. If the vehicle is close to some cameras or radars and auxiliary braking is performed, the detection end is judged to be faulty.

8. The vehicle fault state detection method according to claim 6, characterized in that: The step of detecting the fault information of the vehicle when the vehicle is in a simulated motion state also includes: When the vehicle is stationary, the motor controller is used to increase the speed of the motor, so that the vehicle is in an accelerated motion state; Under static conditions, detect the stiffness and damping of the suspension system to determine the fault state of the suspension system; and / or When the vehicle is stationary, the motor speed is changed through the motor controller. At different speeds, the power assistance of the electric power steering is detected to determine the fault state of the electric power steering.

9. The vehicle fault state detection method according to claim 6, characterized in that: The step of detecting the fault information of the vehicle when the vehicle is in a simulated motion state also includes: The motor speed is reduced through the motor controller to simulate emergency braking of the vehicle when the vehicle is stationary; Detect the reaction status of the anti-lock braking system and determine the fault status of the anti-lock braking system.

10. The vehicle fault state detection method according to any one of claims 5 to 9, characterized in that: Each vehicle is connected to a plurality of the vehicle running state simulation devices, and the step of controlling the speed of the motor by the motor controller to simulate the wheel motion state of the vehicle when the vehicle is in a stationary state so that the vehicle is in a simulated motion state includes: The vehicle is in motion and the operating parameters of the vehicle under different motion environments are collected; Building a database based on the correspondence between the operating parameters and the different wheel bodies of the vehicle; The motor controller controls the rotation speed of the motors of multiple vehicle running state simulation devices based on a database, and simulates the wheel motion state of the vehicle when the vehicle is in a stationary state, so that the vehicle is in a simulated motion state.

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