CN115309141A

CN115309141A - Fault detection system of automobile

Info

Publication number: CN115309141A
Application number: CN202211240062.0A
Authority: CN
Inventors: 胡常健; 代涛; 李岩
Original assignee: Beijing Uniteck Automobile Technology Co ltd; Xian International University
Current assignee: Beijing Uniteck Automobile Technology Co ltd; Xian International University
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2022-11-08

Abstract

The invention provides a fault detection system of an automobile. Relates to the technical field of automobile fault detection. The system comprises: the automobile fault detection platform comprises at least one function simulation circuit for simulating automobile functions, and the function simulation circuit is in communication connection with an automobile body controller of an automobile through a communication interface; the function simulation circuit receives a detection control signal sent by the automobile body controller, controls components in the function simulation circuit to operate in corresponding functions according to the detection control signal, obtains an operation result whether the components are normal or not, and determines whether the automobile body controller is in fault or not according to the operation result. According to the scheme of the invention, the automobile fault detection platform is in communication connection with the automobile body controller, so that fault detection of the automobile body controller and all components of the automobile can be realized, and the damaged components can be accurately judged, so that the detection efficiency is high, and the detection cost is low.

Description

Fault detection system of automobile

Technical Field

The invention relates to the technical field of automobile fault detection, in particular to a fault detection system of an automobile.

Background

Automobiles have been moved into the home and the repair market for automobiles has been very wide. With the development of automobile technology, intelligent control is widely applied to automobiles, and circuits such as a lighting system, a glass lifting system, a wiper system, a horn system, an anti-theft system, a central control remote control system, an air conditioning system, a power supply control system and the like used on the automobiles are controlled by simple mechanical control and a switching circuit, so that intelligent control and automatic fault diagnosis through an automobile body computer are changed. Automobile Body Computers (BCM) have been commonly used in large trucks, gasoline home cars, electric vehicles, and four-wheel electric vehicles for the elderly.

The existing detection equipment can only detect partial functions, cannot detect all components of the automobile body, cannot accurately judge the components when automobile maintenance personnel encounter damage to a computer, an actuator and a controller of the automobile body or a circuit is broken or short-circuited, can only replace a test with a new component, and brings great troubles and economic burden to repairmen.

Disclosure of Invention

The invention provides a fault detection system of an automobile, which can realize fault detection of the automobile body controller and all components of the automobile through the communication connection of the automobile fault detection platform and the automobile body controller, accurately judge damaged components, and has high detection efficiency and low detection cost.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a fault detection system for an automobile, the system comprising:

the automobile fault detection platform comprises at least one function simulation circuit for simulating automobile functions, and the function simulation circuit is in communication connection with an automobile body controller of an automobile through a communication interface;

the function simulation circuit receives a detection control signal sent by the automobile body controller, controls components in the function simulation circuit to operate in corresponding functions according to the detection control signal, obtains an operation result whether the components are normal or not, and determines whether the automobile body controller is in fault or not according to the operation result;

the detection control signal is sent by the vehicle body controller after receiving an indication control signal sent by at least one switch in the function simulation circuit.

Optionally, the functional analog circuit includes: at least one of a key door analog circuit, a vehicle lock analog circuit, a light analog circuit, a wiper analog circuit, a steering signal analog circuit, a brake analog circuit, a gearbox signal analog circuit, a glass lifting analog circuit, an anti-theft analog circuit and a horn analog circuit.

Optionally, after receiving an indication control signal sent by at least one switch in the key door analog circuit, the vehicle body controller sends a detection control signal to the key door analog circuit;

the key door simulation circuit receives a detection control signal sent by the automobile body controller, controls a component corresponding to the switch to operate in a corresponding function according to the detection control signal, obtains an operation result whether the component is normal or not, and determines whether the automobile body controller is in fault or not according to the operation result;

wherein the switch comprises: at least one of an ignition gear switch and an ignition switch; the components and parts that the switch corresponds include: at least one of an ignition relay and a current sensor.

Optionally, after receiving an indication control signal sent by at least one switch in the lock analog circuit, the vehicle body controller sends a detection control signal to the lock analog circuit;

the vehicle lock simulation circuit receives a detection control signal sent by the vehicle body controller, controls a component corresponding to the switch to operate in a corresponding function according to the detection control signal, obtains an operation result whether the component is normal or not, and determines whether the vehicle body controller is in fault or not according to the operation result;

wherein the switch comprises: at least one of a driver door lock switch, a passenger door lock switch, a left rear door lock switch, a right rear door lock switch, a door lock main switch, an oil tank cover door lock switch, a remote control door lock switch and a trunk cover switch; the components and parts that the switch corresponds include: at least one of a driver door lock indicator, a passenger door lock indicator, a left rear door lock indicator, a right rear door lock indicator, a remote control door lock indicator, a trunk lid indicator, and a tank lid door lock indicator.

Optionally, after receiving an indication control signal sent by at least one switch in the light simulation circuit, the vehicle body controller sends a detection control signal to the light simulation circuit;

the light simulation circuit receives a detection control signal sent by the automobile body controller, controls an element corresponding to the switch to operate in a corresponding function according to the detection control signal, obtains an operation result whether the element is normal or not, and determines whether the automobile body controller is in fault or not according to the operation result;

wherein the switch comprises: at least one of a high beam switch, a dipped headlight switch, a width light switch, a fog light switch, a reading light switch, a trunk illumination indicator light switch, a license plate light switch and a reversing indicator light switch; the components and parts that the switch corresponds include: at least one of a left high beam, a right high beam, a left low beam, a right low beam, a left width indicator, a right width indicator, a left fog light, a right fog light, a reading light, a trunk illumination indicator, a license plate light, a reversing indicator and an illumination sensor.

Optionally, after receiving an indication control signal sent by at least one switch in the steering signal analog circuit, the vehicle body controller sends a detection control signal to the steering signal analog circuit;

the steering signal simulation circuit receives a detection control signal sent by the automobile body controller, controls an element corresponding to the switch to operate in a corresponding function according to the detection control signal, obtains an operation result whether the element is normal or not, and determines whether the automobile body controller is in fault or not according to the operation result;

wherein the switch comprises: at least one of a left turn light switch, a right turn light switch and a double flashing indicator light switch; the components and parts that the switch corresponds include: at least one of a front left turn light, a rear left turn light, a front right turn light, a rear right turn light and a double flashing indicator light.

Optionally, after receiving an indication control signal sent by at least one switch in the wiper analog circuit, the vehicle body controller sends a detection control signal to the wiper analog circuit;

the wiper simulation circuit receives a detection control signal sent by the automobile body controller, controls components corresponding to the switch to operate in corresponding functions according to the detection control signal, obtains an operation result whether the components are normal or not, and determines whether the automobile body controller is in fault or not according to the operation result;

wherein the switch comprises: at least one of a front wiper return switch, a rear wiper return switch and a wiper intermittent adjuster; the components and parts that the switch corresponds include: at least one of a wiper speed indicator, a front wiper indicator, and a rear wiper indicator.

Optionally, after receiving an indication control signal sent by at least one switch in the anti-theft analog circuit, the vehicle body controller sends a detection control signal to the anti-theft analog circuit;

the anti-theft simulation circuit receives a detection control signal sent by the automobile body controller, controls an element corresponding to the switch to operate in a corresponding function according to the detection control signal, obtains an operation result whether the element is normal or not, and determines whether the automobile body controller is in fault or not according to the operation result;

wherein the switch comprises: at least one of a theft prevention module and a remote control reception module; the components and parts that the switch corresponds include: at least one of a logic mode relay indicator light and an electric alarm.

Optionally, after receiving an indication control signal sent by at least one switch in the horn analog circuit, the vehicle body controller sends a detection control signal to the horn analog circuit;

the horn simulation circuit receives a detection control signal sent by the automobile body controller, controls an element corresponding to the switch to operate in a corresponding function according to the detection control signal, obtains an operation result whether the element is normal or not, and determines whether the automobile body controller is in fault or not according to the operation result;

wherein the switch comprises: a horn switch; the components and parts that the switch corresponds include: and a horn working indicator lamp.

Optionally, after receiving an indication control signal sent by at least one switch in the brake analog circuit, the vehicle body controller sends a detection control signal to the brake analog circuit;

the brake simulation circuit receives a detection control signal sent by the vehicle body controller, controls a component corresponding to the switch to operate in a corresponding function according to the detection control signal, obtains an operation result of whether the component is normal or not, and determines whether the vehicle body controller fails or not according to the operation result;

wherein the switch comprises: a brake position sensor; the components and parts that the switch corresponds include: at least one of a high-mount brake indicator light, a left brake light and a right brake light.

The scheme of the invention at least comprises the following beneficial effects:

according to the scheme, the automobile fault detection platform comprises at least one function simulation circuit for simulating automobile functions, and the function simulation circuit is in communication connection with an automobile body controller of an automobile through a communication interface; the function simulation circuit receives a detection control signal sent by the automobile body controller, controls components in the function simulation circuit to operate in corresponding functions according to the detection control signal, obtains an operation result whether the components are normal or not, and determines whether the automobile body controller is in fault or not according to the operation result; the detection control signal is sent by the vehicle body controller after receiving an indication control signal sent by at least one switch in the function simulation circuit. Through the automobile fault detection platform with automobile body controller communication connection can realize right the fault detection of all components and parts of automobile body controller and car to damage accurate judgement of components and parts, detection efficiency is high, detects with low costsly.

Drawings

FIG. 1 is a functional diagram of a fault detection system for an automobile according to an embodiment of the present invention;

FIG. 2 is a schematic view of an interface panel of the vehicle fault detection station according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a connection circuit of a multifunctional power input interface of the vehicle fault detection station according to an embodiment of the invention;

FIG. 4 is a schematic view of the front panel of the vehicle fault detection station of an embodiment of the present invention;

FIG. 5 is a first schematic diagram of the key gate simulation circuit of an embodiment of the present invention;

FIG. 6 is a second schematic diagram of the key gate simulation circuit of an embodiment of the present invention;

FIG. 7 is a first schematic diagram of the lock simulation circuit according to an embodiment of the present invention;

FIG. 8 is a second schematic diagram of the lock simulation circuit according to an embodiment of the present invention;

FIG. 9 is a third schematic diagram of the lock simulation circuit according to an embodiment of the present invention;

fig. 10 is a first schematic diagram of the light simulation circuit according to an embodiment of the present invention;

fig. 11 is a second schematic diagram of the light simulation circuit according to an embodiment of the present invention;

FIG. 12 is a third schematic diagram of the light simulation circuit according to an embodiment of the present invention;

FIG. 13 is a schematic diagram of the turn signal simulation circuit of an embodiment of the present invention;

fig. 14 is a schematic diagram of the wiper analog circuit according to the embodiment of the present invention;

FIG. 15 is a schematic diagram of the anti-theft analog circuit of an embodiment of the present invention;

FIG. 16 is a schematic diagram of the horn emulation circuit of an embodiment of the present invention;

FIG. 17 is a schematic diagram of the brake simulation circuit according to an embodiment of the present invention;

FIG. 18 is a schematic diagram of the transmission signal simulation circuit of an embodiment of the present invention;

FIG. 19 is a schematic diagram of a glass lift analog circuit according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

As shown in fig. 1, an embodiment of the present invention provides a fault detection system of an automobile, the system including:

the function simulation circuit receives a detection control signal sent by the vehicle body controller, controls components in the function simulation circuit to operate corresponding functions according to the detection control signal, obtains an operation result of whether the components are normal or not, and determines whether the vehicle body controller fails or not according to the operation result;

In the embodiment of the invention, the automobile fault detection platform is in communication connection with the automobile body controller, so that fault detection of the automobile body controller and all components of an automobile can be realized, and the damaged components can be accurately judged, therefore, the detection efficiency is high, and the detection cost is low.

As shown in fig. 2, in an optional embodiment of the present invention, the vehicle fault detection station may further include: the multifunctional power supply comprises a vehicle body controller interface, a multifunctional signal output interface and a multifunctional power supply input interface;

the vehicle body controller interface may be configured to implement connection between the vehicle body controller and the vehicle fault detection station, and according to actual working requirements, the connection mode may include, but is not limited to: the connection is realized through a detection connection wire harness or through wireless communication;

the multifunctional signal output interface may be used to implement connection between the vehicle fault detection platform and other controllers (for example, an ECU (Electronic Control Unit, computer Control module)) on the vehicle, and according to actual working requirements, the connection mode may include but is not limited to: the connection is realized through a detection connecting wire harness or through wireless communication;

the multifunctional power input interface can be used for realizing the transmission of communication signals between the automobile fault detection platform and the power supply system, the power control system and the connection decoder; the power supply system of the power supply can comprise a switch, a voltmeter, a current meter and an output detection port; the multifunctional power input interface may include, but is not limited to: the multifunctional power supply comprises a 24V power supply interface, a 12V power supply interface and a 5V power supply interface, wherein the interface definition of the multifunctional power supply input interface is shown in the following table 1:

TABLE 1

As shown in fig. 3, based on the contents described in table 1, the multifunctional power input interface connection circuit of the vehicle fault detection station may include:

an ignition gear interface (ON);

the ignition relay live wire is electrically connected with the ignition gear interface (ON), and the ignition relay live wire is connected with a power supply;

a main relay output interface;

the power relay contact and the power relay contact indicator light are electrically connected with the main relay output interface;

a main relay control interface;

the power relay coil and the power relay coil indicator lamp are electrically connected with the main relay control interface, and the power relay coil indicator lamp is connected with a power supply;

J1708A（OBD2）；

a meter communication and meter communication indicator light electrically connected to the J708A (OBD 2);

a CAN-H high voltage communication interface (OBD 6);

the high-voltage communication interface (CAN-H) and the high-voltage communication indicator lamp are electrically connected with the CAN-H high-voltage communication interface (OBD 6); the power supply output indicator lamp of the low-voltage communication indicator lamp;

a CAN-L low voltage communication interface (OBD 14);

the low-voltage communication interface (CAN-L) and the low-voltage communication indicator lamp are electrically connected with the low-voltage communication interface (OBD 14);

a ground interface;

and the power relay contact indicator lamp, the first power output indicator lamp, the high-voltage communication indicator lamp, the low-voltage communication indicator lamp and the instrument communication indicator lamp are all electrically connected with the ground wire.

As shown in fig. 4, in another optional embodiment of the present invention, the vehicle fault detection station may further include: at least two control panels;

the control panel may include, but is not limited to: the device comprises a main voltmeter, a main ammeter, control switches of all components of the automobile, detection holes corresponding to all the components of the automobile and indicator lamps corresponding to all the components of the automobile;

the control switch of each component of the automobile, the detection hole corresponding to each component of the automobile and the indicator light corresponding to each component of the automobile are electrically connected with the corresponding function simulation circuit;

the control switch of each component of the automobile can be used for controlling the on and off of the function simulation circuit;

the detection holes corresponding to the components of the automobile can be used for detecting the current values and the voltage values of the components; detection means may include, but are not limited to: inserting a multimeter pen into the detection holes corresponding to the components of the automobile; the detection holes corresponding to the components of the automobile can also be connected with the automobile body controller through wires to detect the related functions of the automobile body controller;

when the automobile body controller is connected with the automobile fault detection platform, the main ammeter can display a current value of the automobile body controller, the main voltmeter can display a voltage value of the automobile body controller, the state of the automobile body controller can be preliminarily judged through the current value and the voltage value, if the current value and the voltage value are within normal threshold values, the automobile body controller can be preliminarily judged to be possibly not damaged, otherwise, the automobile body controller can be preliminarily judged to be damaged, and a specific damaged part needs to be further detected through a fault detection system of the automobile, so that a specific fault point of the automobile body controller is locked;

the indicator light corresponding to each component of the automobile can be used for displaying the detection result of each component of the automobile; if all the components of the automobile are intact, the indicator lights corresponding to all the components of the automobile are turned on, otherwise, the indicator lights corresponding to all the components of the automobile are turned off; the indicator light corresponding to each component of the automobile can be set to any color, preferably the color which is easily recognized by human eyes, such as: red, yellow, green.

In another alternative embodiment of the present invention, the functional analog circuit includes: at least one of a key door analog circuit, a vehicle lock analog circuit, a light analog circuit, a wiper analog circuit, a steering signal analog circuit, a brake analog circuit, a gearbox signal analog circuit, a glass lifting analog circuit, an anti-theft analog circuit and a horn analog circuit.

In this embodiment, the function simulation circuit is configured to simulate each function circuit on the vehicle, and may be integrated in the vehicle fault detection platform, and control components in the function simulation circuit to perform operations with corresponding functions according to the detection control signal by receiving the detection control signal sent by the vehicle body controller, so as to obtain an operation result of whether the components are normal, and determine whether the vehicle body controller is faulty according to the operation result. Therefore, fault detection of each component in each circuit of the automobile is realized.

In another optional embodiment of the present invention, after receiving the indication control signal sent by at least one switch in the key door simulation circuit, the vehicle body controller sends a detection control signal to the key door simulation circuit;

the key door simulation circuit receives a detection control signal sent by the automobile body controller, controls an element corresponding to the switch to operate in a corresponding function according to the detection control signal, obtains an operation result whether the element is normal or not, and determines whether the automobile body controller is in fault or not according to the operation result;

As shown in fig. 5 and 6, the key gate simulation circuit includes: an ignition gear switch electrically connected with the power line; the ignition switch is connected with the ignition gear switch in series and is grounded; the ignition relay is connected with the ignition switch in series and is grounded; a current sensor in series with the ignition relay; an ignition relay switch can be integrated in the ignition relay; the ignition switch is connected with a starting gear indicator lamp, an ignition gear indicator lamp and a large-load gear indicator lamp in parallel;

the key door simulation circuit receives a detection control signal sent by the automobile body controller, controls an ignition gear switch, an ignition switch and an ignition relay in the key door simulation circuit to be closed according to the detection control signal, detects current information of the automobile body controller through a current sensor, obtains an operation result whether the ignition gear switch, the ignition relay and the current sensor are normal or not, and determines whether the automobile body controller is in fault or not according to the operation result.

In this embodiment, the key door simulation circuit may simulate an ignition key of an automobile, output key switch position signals such as a large load gear (ACC), an ignition gear (ON), a start gear (ST), a neutral position, and a parking position, and may also simulate a one-key start switch signal, and may display operating signals of the ignition relay and the current sensor through a light emitting diode electrically connected to the ignition relay and a light emitting diode electrically connected to the current sensor, respectively;

the key door simulation circuit may simulate any key door device associated with the key door simulation circuit in an automobile, and the key door simulation circuit may be provided with a component capable of simulating a function of the key door device, and the component may be an existing component, including but not limited to a motor, as long as the component is capable of simulating an operation of the key door device associated with the key door simulation circuit.

In another optional embodiment of the present invention, after receiving the indication control signal sent by at least one switch in the lock analog circuit, the vehicle body controller sends a detection control signal to the lock analog circuit;

As shown in fig. 7 to 9, the vehicle lock simulation circuit includes: a first latch circuit and a second latch circuit in series with the first latch circuit;

the first latch circuit includes: a driver door lock indicator light; the first load resistor, the fuel tank cover door lock indicator lamp and the second load resistor are connected with the driver door lock indicator lamp in parallel;

the second lock circuit includes: a passenger door lock indicator light; the third load resistor, the left rear door lock indicator lamp and the right rear door lock indicator lamp are connected with the passenger door lock indicator lamp in parallel;

the vehicle lock circuit further comprises: the remote control door lock indicator light is grounded; the driver door lock switch, the passenger door lock switch, the left rear door lock switch, the right rear door lock switch and the oil tank cover door lock switch which are connected with the remote control door lock indicator lamp in series are all grounded;

the vehicle lock circuit further comprises: the vehicle door lock main switch is grounded; the remote control door lock switch, the trunk lid indicator lamp and the trunk lid switch which are connected with the door lock main switch in series are all grounded;

the vehicle lock simulation circuit receives a detection control signal sent by the vehicle body controller, controls a driver door lock switch, a passenger door lock switch, a left rear door lock switch, a right rear door lock switch, a door lock master switch, a tank cover door lock switch remote control door lock switch and a trunk cover switch in the vehicle lock simulation circuit to be closed according to the detection control signal, controls a driver door lock indicator lamp, a passenger door lock indicator lamp, a left rear door lock indicator lamp, a right rear door lock indicator lamp, a remote control door lock indicator lamp, a trunk cover indicator lamp and a tank cover door lock indicator lamp to be turned on, and controls a first load resistor, a second load resistor and a third load resistor to be turned on to obtain whether the vehicle lock switch, the passenger door lock switch, the left rear door lock switch, the right rear door lock switch, the door lock master switch, the tank cover door lock switch, the remote control door lock switch, the trunk cover switch, the driver door lock indicator lamp, the passenger door lock indicator lamp, the left rear door lock indicator lamp, the right rear door lock indicator lamp, the remote control door lock indicator lamp, the first load resistor, the second load resistor and the third load resistor determine whether the vehicle body lock operation result is normal or not according to the detection control signal.

In this embodiment, the actions of the driver door lock indicator light, the passenger door lock indicator light, the left rear door lock indicator light, the right rear door lock indicator light, the tank cover door lock indicator light, the trunk cover indicator light and the remote control door lock indicator light in the lock simulation circuit can be simulated by the light emitting diode;

it should be noted that the lock simulation circuit may simulate any lock device associated with the lock simulation circuit on the vehicle, as long as a component capable of simulating the function of the lock device is added to the lock simulation circuit, the component includes but is not limited to a motor, and may be an existing component, as long as the motion of the lock device associated with the lock simulation circuit can be simulated.

In another optional embodiment of the present invention, after receiving the indication control signal sent by at least one switch in the light simulation circuit, the vehicle body controller sends a detection control signal to the light simulation circuit;

the lamplight simulation circuit receives a detection control signal sent by the vehicle body controller, controls a component corresponding to the switch to operate in a corresponding function according to the detection control signal, obtains an operation result whether the component is normal or not, and determines whether the vehicle body controller fails or not according to the operation result;

wherein the switch comprises: at least one of a high beam switch, a dipped headlight switch, a width indicator switch, a fog light switch, a reading light switch, a trunk illumination indicator light switch, a license plate light switch and a reversing indicator light switch; the components and parts that the switch corresponds include: at least one of a left high beam, a right high beam, a left low beam, a right low beam, a left width indicator, a right width indicator, a left fog light, a right fog light, a reading light, a trunk illumination indicator, a license plate light, a reversing indicator and an illumination sensor.

As shown in fig. 10 to 12, the light simulation circuit includes: a high beam analog circuit; a dipped headlight analog circuit, a width light analog circuit, a fog light analog circuit, a reading light analog circuit, a trunk lighting indicator lamp analog circuit, a license plate lamp analog circuit, a reversing light analog circuit and an illumination sensor which are connected with the high beam analog circuit in parallel;

the high beam analog circuit includes: a left high beam, a right high beam connected in parallel with the left high beam; and a high beam switch for controlling the high beam; the left high beam, the right high beam and the high beam switch are all grounded;

the low beam lamp analog circuit includes: the left dipped headlight and the right dipped headlight are connected in parallel; and a low beam light switch for controlling the low beam light; the left dipped headlight, the right dipped headlight and the dipped headlight switch are all grounded;

the width lamp analog circuit comprises: the left width indicating lamp is connected with the right width indicating lamp in parallel; and a width lamp switch for controlling the width lamp; the left width indicating lamp, the right width indicating lamp and the width indicating lamp switch are all grounded;

the fog lamp analog circuit comprises: the left fog light is connected with the right fog light in parallel; and a fog light switch for controlling the fog light; the left fog lamp, the right fog lamp and the fog lamp switch are all grounded;

the reading lamp analog circuit comprises: the reading lamp is connected with a reading lamp switch in series; the reading lamp and the reading lamp switch are both grounded;

trunk illumination pilot lamp analog circuit includes: the trunk illumination indicator lamp is a trunk illumination indicator lamp switch connected with the trunk illumination indicator lamp in series; the trunk illumination indicator lamp and the trunk illumination indicator lamp switch are both grounded;

the license plate lamp analog circuit comprises: the license plate lamp is connected with a license plate lamp switch in series; the license plate lamp and the license plate lamp switch are both grounded;

the backup lamp analog circuit includes: the reversing indicator light is a reversing indicator light switch connected with the reversing indicator light in series; the light simulation circuit receives the detection control signal sent by the vehicle body controller, and controls the high beam switch, the dipped headlight switch, the width indicator switch, the fog lamp switch, the reading lamp switch, the trunk illumination indicator lamp switch, the license plate lamp switch and the reversing indicator lamp switch in the light simulation circuit to be closed, the illumination sensor detects the illumination intensity, the left high beam, the right high beam, the left dipped headlight, the right dipped headlight, the left width indicator lamp, the right width indicator lamp, the left fog lamp, the right fog lamp, the reading lamp, the trunk illumination indicator lamp, the license plate lamp and the reversing indicator lamp are lightened to obtain whether the high beam switch, the dipped headlight switch, the width indicator lamp switch, the fog lamp switch, the reading lamp switch, the trunk illumination indicator lamp switch, the reversing indicator lamp switch, the illumination sensor, the left high beam, the right high beam, the left low beam, the right dipped headlight, the left width indicator lamp, the right width indicator lamp, the left fog lamp, the right fog lamp, the reading lamp, the trunk illumination indicator lamp switch, the license plate and the reversing indicator lamp are normally operated according to the detection control signal, and whether the vehicle body controller is normally operated according to the operation result.

In this embodiment, the light simulation circuit may simulate the light bulbs with different powers through a light relay or a high-power resistor with different resistance values, for example: left side high beam, right side high beam, left side low beam the right side low beam the left side shows wide lamp the right side shows wide lamp fog the reading lamp the license plate pilot lamp trunk illumination pilot lamp, and the pilot lamp of backing a car etc. can simulate various switches through multi function switch, for example: the high beam light switch, the dipped headlight switch, the width light switch, the fog light switch, the reading light switch, the trunk illumination indicator light switch, the license plate light switch, the reversing indicator light switch and the like;

it should be noted that the light simulation circuit may simulate any lighting device associated with the light simulation circuit on the vehicle, as long as a component capable of simulating a function of the lighting device is added in the light simulation circuit, the component includes, but is not limited to, a light relay or a resistor, may be an existing component, as long as it can simulate a motion of the lighting device associated with the light simulation circuit.

In another optional embodiment of the present invention, after receiving the indication control signal sent by at least one switch in the steering signal analog circuit, the vehicle body controller sends a detection control signal to the steering signal analog circuit;

the steering signal simulation circuit receives a detection control signal sent by the vehicle body controller, controls a component corresponding to the switch to operate in a corresponding function according to the detection control signal, obtains an operation result of whether the component is normal or not, and determines whether the vehicle body controller is in fault or not according to the operation result;

As shown in fig. 13, the turn signal simulation circuit includes: a left turn signal simulation circuit; the right turn light simulation circuit and the double-flash indicator light simulation circuit are connected with the left turn light simulation circuit in parallel;

the left turn signal lamp analog circuit includes: a front left turn light; a left rear turn light connected in parallel with the left front turn light; and a left turn light switch for controlling the turn light; the left front steering lamp, the left rear steering lamp and the left steering lamp switch are all grounded;

the right turn signal lamp analog circuit includes: a right front turn light; a right rear turn signal lamp connected in parallel with the right front turn signal lamp; and a right turn light switch for controlling the turn light; the right front steering lamp, the right rear steering lamp and the right steering lamp switch are all grounded;

the double-flash indicator lamp analog circuit comprises: the double-flash indicator lamp is a double-flash indicator lamp switch connected with the double-flash indicator lamp in series; the double-flash indicator lamp and the double-flash indicator lamp switch are both grounded;

the steering signal simulation circuit receives the detection control signal that the automobile body controller sent, according to detect control signal, control steering switch and two flashing indicator lamp switches among the steering signal simulation circuit are closed, and left front steering lamp, left back steering lamp, right front steering lamp, right back steering lamp light, and two flashing indicator lamp twinkles, obtain whether normal operation result of steering switch, left front steering lamp, left back steering lamp, right front steering lamp, right back steering lamp, two flashing indicator lamp switch and two flashing indicator lamp, according to the operation result confirms whether the automobile body controller breaks down.

In this embodiment, the left front steering lamp, the left rear steering lamp, the right front steering lamp, the right rear steering lamp, and the double-flashing indicator lamp may be simulated by using a light emitting diode, the steering switch may be simulated by pulling a switch, and the double-flashing indicator lamp switch may be simulated by touching a switch.

The steering signal simulation circuit may simulate any steering device associated with the steering signal simulation circuit on the automobile, and the steering signal simulation circuit may be added with a component capable of simulating the function of the steering device, and the component may be an existing component, including but not limited to a light emitting diode, as long as the component is capable of simulating the operation of the steering device associated with the steering signal simulation circuit.

In another optional embodiment of the present invention, after receiving the indication control signal sent by at least one switch in the wiper analog circuit, the vehicle body controller sends a detection control signal to the wiper analog circuit;

As shown in fig. 14, the wiper analog circuit includes: a wiper speeder indicator light; the windscreen wiper speed indicator is connected with the windscreen wiper speed indicator in series, and the windscreen wiper speed indicator is connected with the windscreen wiper speed indicator in series; the front windscreen wiper indicator lamp, the front windscreen wiper return switch, the windscreen wiper intermittent regulator, the rear windscreen wiper indicator lamp and the rear windscreen wiper return switch are all grounded;

windscreen wiper analog circuit receives the detection control signal that automobile body controller sent, according to detect control signal, control preceding wiper return switch and back wiper return switch among the windscreen wiper analog circuit are closed, and windscreen wiper speeder pilot lamp, preceding wiper pilot lamp and back wiper pilot lamp light, and windscreen wiper intermittent type regulator moves, obtain whether normal operation result of intermittent type regulator is scraped to preceding wiper return switch, back wiper return switch, windscreen wiper speeder pilot lamp, preceding wiper pilot lamp, back wiper pilot lamp and rain, according to the operation result is confirmed whether the automobile body controller breaks down.

In the embodiment, the front wiper relay and the rear wiper relay can be simulated through fixed resistors, the front wiper indicator lamp, the rear wiper indicator lamp and the wiper speeder indicator lamp can be simulated through light emitting diodes, the front wiper return switch and the rear wiper return switch can be simulated through switches, and the wiper intermittent regulator can be simulated through an adjustable resistor and a multi-gear switch;

it should be noted that the wiper analog circuit may simulate any wiper device related to the wiper analog circuit on the automobile, as long as components capable of simulating the function of the wiper device are added to the wiper analog circuit, and the components include, but are not limited to, a fixed resistor, an adjustable resistor and a multi-stage switch, and may be existing components as long as the actions of the wiper device related to the wiper analog circuit can be simulated.

In another optional embodiment of the present invention, after receiving the indication control signal sent by at least one switch in the anti-theft analog circuit, the vehicle body controller sends a detection control signal to the anti-theft analog circuit;

wherein the switch comprises: at least one of an anti-theft module and a remote control receiving module; the components and parts that the switch corresponds include: at least one of a logic mode relay indicator light and an electric alarm.

As shown in fig. 15, the anti-theft analog circuit includes: an anti-theft module; the remote control receiving module, the logic mode relay indicator light and the electric alarm are connected with the anti-theft module in series; the anti-theft module, the remote control receiving module, the logic mode relay indicator lamp and the electric alarm;

the anti-theft analog circuit receives the detection control signal sent by the automobile body controller, controls the action of an anti-theft module in the anti-theft analog circuit according to the detection control signal, controls the action of a remote control receiving module, lights a logic mode relay indicator lamp, sends an alarm by an electric alarm, obtains the normal operation result of the anti-theft module, the remote control receiving module, the logic mode relay indicator lamp and the electric alarm, and determines whether the automobile body controller is in fault according to the operation result.

In the embodiment, the anti-theft function can be tested by communicating the recognition coil and the anti-theft module with the vehicle body controller;

it should be noted that the anti-theft analog circuit may simulate any anti-theft device related to the anti-theft analog circuit on the automobile, as long as the anti-theft analog circuit is added with a component capable of simulating the function of the anti-theft device, where the component includes but is not limited to a recognition coil, may be an existing component, and as long as the function of simulating the action of the anti-theft device related to the anti-theft analog circuit can be realized.

In another optional embodiment of the present invention, after receiving the indication control signal sent by at least one switch in the horn analog circuit, the vehicle body controller sends a detection control signal to the horn analog circuit;

As shown in fig. 16, the horn simulation circuit includes: a horn work indicator light; the horn switch is connected with the horn work indicating lamp in series and is grounded;

the loudspeaker analog circuit receives the detection control signal that automobile body controller sent, according to detect control signal, control loudspeaker switch among the loudspeaker analog circuit is closed, and loudspeaker work pilot lamp lights, obtains whether normal operation result of loudspeaker switch and loudspeaker work pilot lamp, according to the operation result is confirmed whether the automobile body controller breaks down.

In this embodiment, the horn operation indicator lamp may be simulated by a light emitting diode, and the horn switch may be simulated by a switch;

it should be noted that, loudspeaker analog circuit can simulate on the car arbitrary with the relevant loudspeaker device of loudspeaker analog circuit, as long as add in the loudspeaker analog circuit and establish can simulate the components and parts of the function of loudspeaker device can, components and parts include but are not limited to emitting diode and switch, can be current part, as long as can realize the simulation with the relevant loudspeaker device action of loudspeaker analog circuit can.

In another optional embodiment of the present invention, after receiving the indication control signal sent by at least one switch in the brake analog circuit, the vehicle body controller sends a detection control signal to the brake analog circuit;

As shown in fig. 17, the brake simulation circuit includes: a brake position sensor; a high-position brake indicator lamp and a left brake lamp which are connected with the brake position sensor in series; the right brake lamp is connected with the left brake lamp in parallel; the brake position sensor, the high-position brake indicator lamp and the left brake lamp are all grounded;

the brake simulation circuit receives the detection control signal that automobile body controller sent, according to detect control signal, control brake position sensor among the brake simulation circuit detects brake position information, and high brake pilot lamp, left brake lamp and right brake lamp light, obtain whether normal operation result of brake position sensor, high brake pilot lamp, left brake lamp and right brake lamp, according to the operation result is confirmed whether the automobile body controller breaks down.

In this embodiment, the brake position sensor may be simulated by an adjustable resistor, and the left brake lamp, the right brake lamp and the high-mount brake indicator lamp may be simulated by leds;

it should be noted that the brake simulation circuit may simulate any brake device associated with the brake simulation circuit on the automobile, as long as components capable of simulating the function of the brake device are added in the brake simulation circuit, where the components include, but are not limited to, a light emitting diode and a switch, and may be existing components as long as the components can simulate the brake device action associated with the brake simulation circuit, for example: the brake switch can be simulated by the toggle switch.

In another optional embodiment of the present invention, after receiving the indication control signal sent by at least one switch in the transmission signal analog circuit, the vehicle body controller sends a detection control signal to the transmission signal analog circuit;

the gearbox signal simulation circuit receives a detection control signal sent by the automobile body controller, controls an element corresponding to the switch to operate in a corresponding function according to the detection control signal, obtains an operation result whether the element is normal or not, and determines whether the automobile body controller is in fault or not according to the operation result;

wherein the switch comprises: a shift lock solenoid valve and an automatic transmission shift lever; the components and parts that the switch corresponds include: at least one of a parking lock solenoid indicator light, a shift lock solenoid indicator light, and a steering column lock.

As shown in fig. 18, the transmission signal simulation circuit includes: an automatic transmission;

the automatic transmission includes: a gear shifting locking electromagnetic valve indicator light;

the automatic transmission gear shifting rod, the parking locking electromagnetic valve indicator light and the parking position switch are connected with the gear shifting locking electromagnetic valve indicator light in series, and the steering column locking device is in communication connection with the gear shifting locking electromagnetic valve indicator light;

the gear shifting locking electromagnetic valve indicator light, the parking locking electromagnetic valve indicator light and the parking position switch are all grounded;

the transmission case signal simulation circuit receives a detection control signal sent by the automobile body controller, controls a parking position switch and an automatic transmission gear shifting rod in the transmission case signal simulation circuit to be closed according to the detection control signal, enables a parking locking electromagnetic valve indicator lamp and a gear shifting locking electromagnetic valve indicator lamp to be on, enables a steering column locking device to be opened, obtains an operation result whether the gear shifting locking electromagnetic valve indicator lamp, the automatic transmission gear shifting rod, the parking locking electromagnetic valve indicator lamp, the parking position switch and the steering column locking device are normal or not, and determines whether the automobile body controller is in fault or not according to the operation result.

In this embodiment, the gear shift locking solenoid indicator and the parking locking solenoid indicator may be simulated by a light emitting diode, and the parking position switch may be simulated by a switch;

it should be noted that the transmission signal simulation circuit may simulate any transmission device on an automobile, which is related to the transmission signal simulation circuit, as long as components capable of simulating the function of the transmission device are added to the transmission signal simulation circuit, where the components include, but are not limited to, light emitting diodes and switches, and may be existing components, as long as the components can simulate the action of the transmission device related to the transmission signal simulation circuit.

In another optional embodiment of the present invention, after receiving the indication control signal sent by at least one switch in the glass-frame lifting analog circuit, the vehicle body controller sends a detection control signal to the glass-frame lifting analog circuit;

the glass lifting simulation circuit receives a detection control signal sent by the automobile body controller, controls an element corresponding to the switch to operate in a corresponding function according to the detection control signal, obtains an operation result whether the element is normal or not, and determines whether the automobile body controller is in fault or not according to the operation result;

wherein the switch comprises: at least one of a driver side window switch, a passenger side window switch, a left rear window switch, and a right rear window switch; the components and parts that the switch corresponds include: at least one of a sunroof control module and a driver side window motor.

As shown in fig. 19, the glass-lifting analog circuit includes:

the skylight control module is in communication connection with the automobile body controller, and the driver side window motor, the driver side window switch, the passenger side window switch and the left rear window switch are connected with the automobile body controller;

the glass lifting simulation circuit receives a detection control signal sent by the automobile body controller, and controls a driver side window switch, a passenger side window switch, a left rear window switch and a right rear window switch in the glass lifting simulation circuit to be closed according to the detection control signal, the driver side window motor and the skylight control module are started to obtain an operation result of whether the skylight control module, the driver side window motor, the driver side window switch, the passenger side window switch, the left rear window switch and the right rear window switch are normal or not, and whether the automobile body controller is in fault or not is determined according to the operation result.

In this embodiment, the glass-frame lifting analog circuit can communicate with the vehicle body controller through the vehicle window switch module and the sunroof control module;

the glass-lifting simulation circuit can simulate any glass-lifting device related to the glass-lifting simulation circuit on an automobile, and the glass-lifting simulation circuit is only required to be additionally provided with a component capable of simulating the function of the glass-lifting device, and the component can be an existing component and only can simulate the action of the glass-lifting device related to the glass-lifting simulation circuit.

In another optional embodiment of the present invention, the method for detecting a fault of an automobile may include:

the vehicle body controller is connected with the vehicle fault detection platform through a vehicle body controller interface of the vehicle fault detection platform, and the connection mode can include: an electrical or communication connection;

poking control switches of various components of the automobile on the automobile fault detection platform, sending state output signals to the automobile body controller by the function simulation circuit corresponding to the various components of the automobile, sending detection control signals to the components in the function simulation circuit after the automobile body controller receives the state output signals, operating corresponding functions by the components in the function simulation circuit according to the detection control signals, and enabling indicator lights corresponding to the components to act;

and checking all the components one by one, wherein if the indicator lights corresponding to all the components are turned on, the vehicle body controller has no fault, otherwise, the vehicle body controller has a fault.

In the embodiment of the invention, the automobile fault detection platform is in communication connection with the automobile body controller, so that fault detection of the automobile body controller and all components of the automobile can be realized, and the damaged components can be accurately judged, thereby effectively reducing the workload of detection personnel, improving the detection efficiency and reducing the detection cost.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk or an optical disk, and various media capable of storing program codes.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processor, storage medium, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a well-known general purpose device. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A fault detection system for a vehicle, the system comprising:

2. The fault detection system of an automobile of claim 1, wherein the functional analog circuit comprises: at least one of a key door analog circuit, a vehicle lock analog circuit, a light analog circuit, a wiper analog circuit, a steering signal analog circuit, a brake analog circuit, a gearbox signal analog circuit, a glass lifting analog circuit, an anti-theft analog circuit and a horn analog circuit.

3. The fault detection system of claim 2, wherein the body controller sends a detection control signal to the key gate simulation circuit after receiving the indication control signal sent by the at least one switch in the key gate simulation circuit;

4. The system of claim 2, wherein the body controller sends a detection control signal to the lock simulation circuit after receiving the indication control signal sent by the at least one switch in the lock simulation circuit;

5. The fault detection system of the automobile according to claim 2, wherein the body controller sends a detection control signal to the light simulation circuit after receiving the indication control signal sent by the at least one switch in the light simulation circuit;

6. The fault detection system of the automobile according to claim 2, wherein the body controller sends a detection control signal to the turn signal simulation circuit after receiving the indication control signal sent by the at least one switch in the turn signal simulation circuit;

wherein the switch comprises: at least one of a left turn light switch, a right turn light switch and a double flashing indicator light switch; the components and parts that the switch corresponds include: at least one of a left front turn light, a left rear turn light, a right front turn light, a right rear turn light, and a double flashing indicator light.

7. The system of claim 2, wherein the body controller sends a detection control signal to the wiper analog circuit after receiving the indication control signal sent by the at least one switch in the wiper analog circuit;

wherein the switch comprises: at least one of a front wiper return switch, a rear wiper return switch and a wiper intermittent adjuster; the components and parts that the switch corresponds include: at least one of a wiper speed indicator, a front wiper indicator and a rear wiper indicator.

8. The system of claim 2, wherein the body controller sends a detection control signal to the anti-theft analog circuit after receiving the indication control signal sent by at least one switch in the anti-theft analog circuit;

9. The system of claim 2, wherein the body controller sends a detection control signal to the horn simulation circuit after receiving the indication control signal sent by the at least one switch in the horn simulation circuit;

the horn simulation circuit receives a detection control signal sent by the automobile body controller, controls an element corresponding to the switch to operate in a corresponding function according to the detection control signal, obtains an operation result of whether the element is normal or not, and determines whether the automobile body controller is in fault or not according to the operation result;

10. The system of claim 2, wherein the body controller sends a detection control signal to the brake simulation circuit after receiving the indication control signal sent by the at least one switch in the brake simulation circuit;

the brake simulation circuit receives a detection control signal sent by the automobile body controller, controls an element corresponding to the switch to operate in a corresponding function according to the detection control signal, obtains an operation result whether the element is normal or not, and determines whether the automobile body controller is in fault or not according to the operation result;

wherein the switch comprises: a brake position sensor; the components and parts that the switch corresponds include: at least one of a high brake indicator light, a left brake light and a right brake light.