CN112051826B - Automobile fault detection method and system - Google Patents

Automobile fault detection method and system Download PDF

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Publication number
CN112051826B
CN112051826B CN201910489827.6A CN201910489827A CN112051826B CN 112051826 B CN112051826 B CN 112051826B CN 201910489827 A CN201910489827 A CN 201910489827A CN 112051826 B CN112051826 B CN 112051826B
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function module
information
automobile function
abnormal
automobile
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CN112051826A (en
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肖晶
钱莉
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
    • G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/24—Pc safety
    • G05B2219/24065—Real time diagnostics

Abstract

The invention discloses a car fault detection method in the intelligent car field, which is applied to the fault detection of a car, wherein the car comprises one or more car functional modules, a car fault detection system and a communication device, the car fault detection system comprises a detection device and a signal generator, and the method comprises the following steps: the detection device acquires the state information of the automobile function module A, generates detection information according to the state information of the automobile function module A, and sends the detection information to the signal generator; the signal generator generates a characteristic signal according to the detection information and sends the characteristic signal to the communication device; the communication device sends the characteristic signal to the external equipment, so that the external equipment determines whether the work of the automobile function module A is abnormal or not according to the characteristic signal. The invention also discloses a system for detecting the automobile fault. The embodiment of the invention is beneficial to accurately detecting whether each automobile functional module is abnormal or not.

Description

Automobile fault detection method and system
Technical Field
The invention relates to the field of intelligent automobiles, in particular to an automobile fault detection method and a related system.
Background
Cloud computing, car networking, autodrive technology, etc. have developed fast, and the problem that brings from this is many. For example, the children of low age are abnormally locked in the vehicle, and the vehicle door cannot be opened; for example, if the vehicle is abnormally halted, the power system is normal, but the vehicle-mounted station cannot work normally. How to remind and avoid the influence caused by various software, hardware and software and hardware problems in the era of high-speed development and fusion of technologies becomes a matter which needs to be solved urgently.
In order to solve the above problems, the prior art provides a vehicle-mounted intelligent dual-system scheme, in which a secondary system is connected to the internet, a main system is connected with the secondary system through an integrated docking module, and a network security function is enabled between the main system and the secondary system and provided by a protection module. The main system comprises a fault judgment module which is connected with the integrated butt joint module and used for detecting whether the auxiliary system sends out a fault signal or not so as to judge the state of the auxiliary system. When the fault judgment module judges that the auxiliary system has a fault, the fault judgment module informs the restart docking module to restart the auxiliary system (through the integrated docking module).
In the prior art, a secondary system is physically isolated from a primary system, and when the secondary system fails, the primary system judges the secondary system. If the primary system does not detect a failure of the secondary system, or the primary system itself fails, the prior art detection mechanism will fail. In addition, the detection mechanism of the prior art cannot detect whether the main system fails, and the failure of the main system is often fatal. In addition, when the sub-system fails before sending the fault signal, the fault of the sub-system cannot be detected; and under the attack of powerful virus, the safety connection between the main system and the auxiliary system can be broken, so that the main system is crashed, and further serious potential safety hazards such as crash and the like are caused. In summary, the function of detecting a vehicle failure in the prior art needs to be improved.
Disclosure of Invention
The embodiment of the invention provides a method and a system for detecting automobile faults, which are beneficial to accurately detecting whether each automobile functional module is abnormal.
In a first aspect, an embodiment of the present invention provides an automobile fault detection method, which is applied to fault detection of an automobile, where the automobile includes one or more automobile function modules, an automobile fault detection system, and a communication device, where the automobile fault detection system includes a detection device and a signal generator, and the automobile fault detection method includes:
the detection device acquires state information of the automobile function module A, generates detection information according to the state information of the automobile function module A, and sends the detection information to the signal generator, wherein the detection information is used for indicating whether the automobile function module A works normally, and the automobile function module A is any one of one or more automobile function modules; the signal generator generates a characteristic signal according to the detection information and sends the characteristic signal to the communication device; the communication device sends the characteristic signal to the external equipment, so that the external equipment determines whether the work of the automobile function module A is abnormal or not according to the characteristic signal. By introducing the signal generator, the abnormal characteristic signal is generated according to the detection information for indicating the abnormal work of the automobile function module A, and the abnormal characteristic signal is sent to the external equipment to inform the external equipment of the abnormal work of the automobile function module A, so that the automobile fault detection performance is improved, and the external equipment takes corresponding measures to eliminate the influence caused by the abnormal work of the automobile function module, thereby improving the performance of the automobile.
In one possible embodiment, the detection information includes operational anomaly information, the signature signal includes an anomaly signature signal, and the signal generator generates the signature signal based on the detection information, including:
and if the detection information is abnormal work information, the signal generator generates an abnormal characteristic signal according to the abnormal work information.
In a possible embodiment, the detection information includes normal operation information, the characteristic signal includes a heartbeat signal, and the signal generator generates the characteristic signal according to the detection information, and further includes:
and if the detection information is normal work information, the signal generator generates a heartbeat signal according to the normal work information.
In a possible embodiment, the work abnormality information includes an automobile function module identifier and an abnormality type identifier, the automobile function module identifier is used for indicating the automobile function module a, and the signal transmitter generates an abnormality characteristic signal according to the work abnormality information:
and generating an abnormal characteristic signal according to the automobile function module identifier and the abnormal type identifier, wherein the automobile function module identifier and the abnormal type identifier correspond to the amplitude of the abnormal characteristic signal one by one. Because the automobile function module identification and the abnormal type identification are in one-to-one correspondence with the amplitude of the abnormal characteristic signal, after the external equipment receives the abnormal characteristic signal, the failed automobile function module and the abnormal type can be determined according to the amplitude of the abnormal characteristic signal, and therefore the external equipment can take corresponding measures to remove the failure of the automobile function module.
In a possible embodiment, the state information of the vehicle function module a includes whether the detection device receives a response message of the vehicle function module a after sending the first keep alive message to the vehicle function module a, and the detection information includes normal operation information or abnormal operation information, and the detection device generates the detection information according to the state information of the vehicle function module a, including:
if the state information of the automobile function module A comprises a response message of the automobile function module A received after the detection device sends a first keep alive message to the automobile function module A, the detection device determines that the automobile function module A works normally and generates normal working information;
if the state information of the automobile function module A comprises that the detection device does not receive the response message of the automobile function module A after sending the first keep alive message to the automobile function module A, the detection device determines that the automobile function module A works abnormally and generates working abnormal information.
In a possible embodiment, the state information of the vehicle function module a includes that the detection device receives a second keep-alive message or an abnormal message actively sent by the vehicle function module a, the detection information includes normal operation information or abnormal operation information, and the detection device generates the detection information according to the state information of the vehicle function module a, including:
if the state information of the automobile function module A comprises a second keep-alive message which is actively sent by the detection device to the automobile function module A, the detection device determines that the automobile function module A works normally and generates normal working information;
if the state information of the automobile function module A comprises the abnormal information which is actively sent by the detection device to the automobile function module A, the detection device determines that the automobile function module A works abnormally and generates the abnormal working information.
In a possible embodiment, the detecting device includes a central gateway and a diagnosis module, and the detecting device obtains the status information of the vehicle function module a, generates the detection information according to the status information of the vehicle function module a, and sends the detection information to the signal generator, including:
the central gateway acquires the state information of the automobile function module A; the diagnosis module generates detection information according to the state information of the automobile function module A and transmits the detection information to the signal generator.
In a possible embodiment, the state information of the vehicle function module a includes whether the central gateway receives a response message of the vehicle function module a after sending the first keep alive message to the vehicle function module a, the detection information includes normal operation information or abnormal operation information, and the diagnosis module generates the detection information according to the state information of the vehicle function module a, including:
if the state information of the automobile function module A comprises a response message of the automobile function module A received after the central gateway sends the first keep alive message to the automobile function module A, the diagnosis module determines that the automobile function module A works normally and generates normal working information;
if the state information of the automobile function module A comprises that the central gateway does not receive the response message of the automobile function module A after sending the first keep alive message to the automobile function module A, the diagnosis module determines that the automobile function module A works abnormally and generates working abnormal information.
In a possible embodiment, the state information of the vehicle function module a includes that the central gateway receives a second keep-alive message or an abnormal message actively sent by the vehicle function module a, the detection information includes normal operation information or abnormal operation information, and the diagnosis module generates the detection information according to the state information of the vehicle function module a, including:
if the state information of the automobile function module A comprises a second keep-alive message actively sent by the central gateway receiving the automobile function module A, the diagnosis module determines that the automobile function module A works normally and generates normal working information;
if the state information of the automobile function module A comprises the abnormal information which is actively sent by the central gateway and received by the automobile function module A, the diagnosis module determines that the automobile function module A works abnormally and generates the abnormal working information.
In a second aspect, an embodiment of the present invention provides an automobile fault detection system, where the system is applied to fault detection of an automobile, and the automobile fault detection system includes:
the detection device is used for acquiring the state information of the automobile function module A, generating detection information according to the state information of the automobile function module A and sending the detection information to the signal generator, wherein the detection information is used for indicating whether the automobile function module A works normally or not; the automobile function module A is any one of one or more automobile function modules in an automobile;
the signal generator is used for generating a characteristic signal according to the detection information and transmitting the characteristic signal to a communication device of the automobile; the communication device sends the characteristic signal to the external equipment, so that the external equipment determines whether the work of the automobile function module A is abnormal or not according to the characteristic signal.
In a possible embodiment, the detection information comprises operational anomaly information, the signature signal comprises an anomaly signature signal, and the signal generator is specifically configured to, in generating the signature signal based on the detection information:
and if the detection information is abnormal work information, generating an abnormal characteristic signal according to the abnormal work information.
In a possible embodiment, the detection information includes normal operation information, the characteristic signal includes a heartbeat signal, and the signal generator is further specifically configured to, in generating the characteristic signal based on the detection information:
and if the detection information is normal work information, generating a heartbeat signal according to the normal work information.
In a possible embodiment, the work abnormality information includes an automobile function module identifier and an abnormality type identifier, the automobile function module identifier is used to indicate the automobile function module a, and in terms of generating the abnormality characteristic signal according to the work abnormality information, the signal generator is specifically configured to:
and generating an abnormal characteristic signal according to the automobile function module identifier and the abnormal type identifier, wherein the automobile function module identifier and the abnormal type identifier correspond to the amplitude of the abnormal characteristic signal one by one.
In a possible embodiment, the status information includes whether the detection device receives a response message sent by the vehicle function module a after sending the first keep alive message to the vehicle function module a, and the detection information includes normal operation information or abnormal operation information, and in terms of generating the detection information according to the status information of the vehicle function module a, the detection device is specifically configured to:
if the state information comprises a response message sent by the automobile function module A after the detection device sends a first keep alive message to the automobile function module A, determining that the automobile function module A works normally, and generating normal working information;
and if the state information comprises that the response message sent by the automobile function module A is not received after the detection device sends the first keep-alive message to the automobile function module A, determining that the automobile function module A works abnormally, and generating abnormal working information.
In a possible embodiment, the status information includes that the detection device receives a second keep-alive message or an abnormal message sent by the vehicle function module a, the detection information includes normal operation information or abnormal operation information, and in terms of generating the detection information according to the status information of the vehicle function module a, the detection device is specifically configured to:
if the state information comprises the second keep-alive message sent by the automobile function module A, determining that the automobile function module A works normally, and generating normal working information;
and if the state information comprises the received abnormal information sent by the automobile function module A, determining that the automobile function module A works abnormally, and generating abnormal working information.
In a possible embodiment, the detection means comprise:
the central gateway is used for acquiring the state information of the automobile function module A;
and the diagnosis module is used for generating detection information according to the state information of the automobile function module A and transmitting the detection information to the signal generator.
In a possible embodiment, the status information includes whether a response message of the vehicle function module a is received after the central gateway sends the first keep alive message to the vehicle function module a, the detection information includes normal operation information or abnormal operation information, and in terms of generating the detection information according to the status information of the vehicle function module a, the diagnosis module is specifically configured to:
if the state information comprises that the central gateway sends a first keep-alive message to the automobile function module A and then receives the keep-alive message sent by the automobile function module A, determining that the automobile function module A works normally, and generating normal-working information;
and if the state information comprises that the central gateway does not receive the keep-alive message sent by the automobile function module A after sending the first keep-alive message to the automobile function module A, determining that the automobile function module A works abnormally, and generating abnormal working information.
In a possible embodiment, the status information includes that the central gateway receives a second keep-alive message or an abnormal message sent by the vehicle function module a, the detection information includes normal operation information or abnormal operation information, and in terms of generating the detection information according to the status information of the vehicle function module a, the diagnosis module is specifically configured to:
if the state information comprises a second keep-alive message which is actively sent by the automobile function module A and received by the central gateway, determining that the automobile function module A works normally, and generating normal working information;
if the state information comprises that the central gateway receives the abnormal information which is actively sent by the automobile function module A, the fact that the automobile function module A works abnormally is determined, and working abnormal information is generated.
These and other aspects of the invention are apparent from and will be elucidated with reference to the embodiments described hereinafter.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of an application scenario of a method for detecting a vehicle fault according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a method for detecting a vehicle fault according to an embodiment of the present invention;
fig. 3 is a schematic view of an application scenario of another method for detecting a vehicle fault according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an automobile fault detection system according to an embodiment of the present invention.
Detailed Description
Embodiments of the present application are described below with reference to the drawings.
Referring to fig. 1, fig. 1 is a schematic view of an application scenario of a method for detecting an automobile fault according to an embodiment of the present invention. As shown in fig. 1, the application scenario includes an automobile and external devices, the automobile includes a communication device 101, a detection device 102, a Body Control Module (BCM) 103, a Human Machine Interface (HMI) 104, a multi-domain controller (MDC) 105, a Vehicle Control Unit (VCU) 106, and a signal generator 107, and the external devices include a user mobile phone, a tablet computer, a smart wearable device, or a cloud server.
Wherein the detection device 102 is connected with the communication device 101, the BCM 103, the HMI 104, the MDC 105 and the VCU 106 through ethernet lines, and the detection device 102 is further connected with the communication device 101, the BCM 103, the MDC 105 and the signal generator 107 through the CAN bus. The signal generator 107 is connected to the communication device 101 via a CAN bus. The detection device 102 and the signal generator 107 realize information interaction with the cloud and the user terminal through the communication device 101.
In one example, the communication device 101 may be a Telematics BOX (Tbox), which is a vehicle-mounted device having multiple functions such as communication function and software upgrade.
Common functions of the BCM 103 include controlling power windows, power mirrors, air conditioners, headlights, turn signals, anti-theft locking systems, central locks, defrost devices, etc.
The HMI 104 is a medium for interaction and information exchange between the system and the user, and includes an operating system, HMI integration software, a display device related to a meter/center screen/Head Up Display (HUD), and the like.
The MDC 105 receives signals of different sensors, analyzes and processes the signals, and finally sends out a control command, mainly solving the problem that after the number of automobile unit modules is increased, an automobile control system becomes complicated, and each module group can exert the maximum capability through domain division.
The VCU 106 calculates parameters such as motor output torque required for operation according to the operation intention of the driver such as the accelerator pedal position, the gear position, the brake pedal force and the like and the state of charge of the storage battery, so as to coordinate the movement of each power component and ensure the normal running of the electric vehicle. In addition, higher energy efficiency can be achieved through service charging, recovery of braking energy, and the like. While the control of the energy and power control part is completed, the VCU 106 can also control electric equipment on the vehicle together with an intelligent vehicle body system so as to ensure the timeliness and safety of driving.
In one example, the detecting device 102 may be a central gateway, which determines whether the car function modules (such as the BCM 103, the HMI 104, the MDC 105, the VCU 106, etc.) connected thereto work normally, and if the car function modules work normally, the signal generator 107 generates a periodic characteristic signal, such as a heartbeat signal; if the operation is abnormal, the signal generator 107 generates an abnormal signal; the communication device 101 receives the signal generated by the signal generator, and transmits the signal to an external device through interfaces of the communication device 101, such as GPS, WIFI, LTE, and the like, where the external device includes, but is not limited to, a cloud, a user terminal, such as a mobile phone of a user, a Pad, and a smart wearable device. And if the external equipment does not detect the heartbeat signal or detects the abnormal signal, generating alarm information.
Based on the application scenario of fig. 1, fig. 2 and fig. 2 are schematic flowcharts of an automobile fault detection method provided in the embodiment of the present application. As shown in fig. 2, the method includes:
s201, the detection device acquires the state information of the automobile function module A connected with the detection device.
The car function module a is any one of one or more car function modules (such as the BCM 103, HMI 104, MDC 105, VCU 106, etc. shown in fig. 1).
The state information of the automobile function module A comprises whether a response message fed back by the automobile function module A is received after the detection device sends the first keep-alive message to the automobile function module A, or the detection device receives a second keep-alive message or an abnormal message which is actively sent to the detection device by the automobile function module A.
Specifically, the detection device sends a first keep-alive message to the automobile function module a through an ethernet line, a CAN bus or other media, receives a response message sent by the automobile function module a, and receives a second keep-alive message or an abnormal message actively sent by the automobile function module a.
It should be noted that, after the detection device sends the first keep-alive message to one or more automobile function modules, for the automobile function module a, if the automobile function module a works normally, the automobile function module a feeds back a response message to the detection device; if the automobile function module A works abnormally, the automobile function module A does not feed back a response message to the detection device.
For the automobile function module A with the fault detection function, if the automobile function module A detects that the automobile function module A works normally, the automobile function module A actively sends a second keep-alive message to the detection device; if the automobile function module A detects that the automobile function module A works abnormally or fails, the automobile function module A sends an abnormal message to the detection device.
In one possible embodiment, when the vehicle function module a is out of order, the vehicle function module a carries the type of abnormality of the vehicle function module a or an identifier indicating the type of abnormality of the vehicle function module a in an abnormality message sent to the detection device.
S202, the detection device generates detection information of the automobile function module A according to the state information of the automobile function module A and sends the detection information to the signal generator, and the detection information is used for judging whether the automobile function module A works normally or not.
Specifically, the state information of the automobile function module a includes whether a response message of the automobile function module a is received after the detection device sends a first keep alive message to the automobile function module a, the detection information includes normal work information or abnormal work information, the normal work information is used for indicating that the automobile function module a works normally, the abnormal work information is used for indicating that the automobile function module a works abnormally, if the state information of the automobile function module a includes the response message of the automobile function module a received after the detection device sends the first keep alive message to the automobile function module a, the detection device determines that the automobile function module a works normally, and generates normal work information of the automobile function module a; if the state information of the automobile function module A includes that the response message of the automobile function module A is not received after the detection device sends the first keep alive message to the automobile function module A, the detection device determines that the automobile function module A fails or works abnormally, and generates working abnormal information of the automobile function module A.
For example, after the detection device sends the first security message to the BCM, HMI, MDC and VCU, if the detection device receives the response message of the BCM and HMI and does not receive the response message of the MDC and VCU, the detection device determines that the BCM and HMI work normally, determines that the MDC and VCU work abnormally or fail, and generates the work normal information of the BCM and HMI and the work abnormal information of the MDC and VCU.
In another example, in a case that one or more automobile function modules have an abnormality detection function, the state information of the automobile function module a includes that the detection device receives a second keep-alive message or an abnormal message actively sent by the automobile function module a, and if the state information of the automobile function module includes that the detection device receives a first keep-alive message of the automobile function module a, the detection device determines that the automobile function module a is working normally and generates normal working information of the automobile function module a; if the state information of the automobile function module A comprises a first abnormal message which is received by the detection device and is actively sent by the automobile function module A, the detection device determines that the automobile function module A works abnormally or fails and generates the working abnormal information of the automobile function module A.
For example, if the detection device receives the abnormal message actively sent by the HMI and the MDC and the first security message of the BCM and the VCU, the detection device determines that the BCM and the VCU work normally, determines that the HMI and the MDC work abnormally or fail, and generates the normal work information of the BCM and the VCU and the abnormal work information of the MDC and the HMI.
In one possible embodiment, as shown in fig. 3, the detection device comprises a central gateway and a diagnostic module, the central gateway being connected to one or more vehicle function modules via an ethernet line or a CAN bus, the central gateway being connected to the diagnostic module via the ethernet line or the CAN bus, and the diagnostic module being connected to the signal generator via the CAN bus.
The central gateway acquires the state information of the automobile function module A connected with the central gateway, and the diagnosis module generates detection information according to the state information of the automobile function module A, wherein the detection information is used for indicating whether the automobile function module A works normally.
Specifically, in one example, the state information of the automobile function module a includes whether the central gateway receives a response message of the automobile function module a after sending the first keep-alive message to the automobile function module a, the detection information includes normal operation information or abnormal operation information, and the diagnosis module generates the detection information according to the state information of the automobile function module a, including:
if the state information of the automobile function module A comprises a response message of the automobile function module A received after the central gateway sends the first keep alive message to the automobile function module A, the diagnosis module determines that the automobile function module A works normally and generates normal working information; if the state information of the automobile function module A comprises that the central gateway does not receive the response message of the automobile function module A after sending the first keep alive message to the automobile function module A, the diagnosis module determines that the automobile function module A works abnormally and generates working abnormal information.
In another example, the state information of the vehicle function module a includes that the central gateway receives a second keep-alive message or an abnormal message actively sent by the vehicle function module a, the detection information includes normal operation information or abnormal operation information, and the diagnosis module generates the detection information according to the state information of the vehicle function module a, including:
if the state information of the automobile function module A comprises a second keep-alive message actively sent by the central gateway receiving the automobile function module A, the diagnosis module determines that the automobile function module A works normally and generates normal working information; if the state information of the automobile function module A comprises that the central gateway receives the abnormal information which is actively sent by the automobile function module A, the diagnosis module determines that the automobile function module A works abnormally and generates working abnormal information.
S203, if the detection information comprises work abnormal information of the automobile function module A, the signal generator generates an abnormal characteristic signal according to the work abnormal information of the automobile function module A.
It should be noted that the detection information includes operation abnormality information of the vehicle function module a, that is, the detection information is used to indicate that the vehicle function module a is operated abnormally.
In one example, the abnormal characteristic signal and the normal characteristic signal may be both a periodic signal of a preset frequency or a periodic signal of a preset amplitude. For example, the reference amplitude is aV, the periodic signal with amplitude aV is a normal characteristic signal, and the periodic signal with amplitude 3aV is an abnormal characteristic signal; for example, the reference frequency is f, the periodic signal with the frequency f is a normal characteristic signal, and the periodic signal with the frequency 3f is an abnormal characteristic signal.
It should be noted that the normal characteristic signal in the present invention may also be referred to as a heartbeat signal.
In one possible embodiment, the work abnormality information of the vehicle function module a includes a vehicle function module identifier and an abnormality type identifier. The automobile function identifier is used for indicating the automobile function module A. And the signal generator generates an abnormal characteristic signal according to the automobile function module identifier and the abnormal type identifier. At the moment, the abnormal characteristic signal represents the automobile functional module A with abnormal work and the abnormal type thereof.
The type of the abnormality of the vehicle function module a includes, but is not limited to, a software abnormality and a mechanical abnormality. Further, software exceptions include, but are not limited to, UI exceptions, system exceptions, and other exceptions.
It should be noted that the abnormal characteristic signal can only represent one vehicle function module with abnormal operation and one abnormal type thereof, in other words, the vehicle function module identifier and the abnormal type are in one-to-one correspondence. When the M automobile function modules work abnormally, the signal generator needs to generate M abnormal characteristic signals respectively; for the M abnormal types of the car function module a, M abnormal characteristic signals also need to be generated respectively. Each abnormal characteristic signal represents an automobile functional module with abnormal work and an abnormal type, and M is an integer larger than 1.
For example, the car function module identifier and the abnormality type identifier can be described with reference to table 1 below.
Figure BDA0002086034850000071
TABLE 1
As shown in table 1 below, for example, the automobile function module identifier 00 is used to indicate a BCM, at this time, the exception type identifier 0 represents a software exception of the BCM, and the exception type identifier 1 represents a mechanical exception of the BCM; the anomaly type identifier 0 can be further subdivided, such as 00 and 01, wherein 00 represents the UI anomaly of the BCM, and 01 represents the system anomaly of the BCM.
The automobile function module identifier 01 is used for indicating the HMI, the abnormal type identifier 0 represents the software abnormality of the HMI at the moment, and the abnormal type identifier 1 represents the mechanical abnormality of the HMI; the anomaly type identifier 0 can be further subdivided, such as into 00 and 01, where 00 characterizes UI anomalies for the HMI and 01 characterizes system anomalies for the HMI.
The automobile function module identifier 10 is used for indicating the MDC, at this time, the abnormal type identifier 0 represents software abnormality of the MDC, and the abnormal type identifier 1 represents mechanical abnormality of the MDC; the anomaly type identifier 0 can be further subdivided, such as into 00 and 01, where 00 characterizes UI anomalies for MDC and 01 characterizes module anomalies for MDC.
The automobile function module identifier 11 is used for indicating the VCU, at the moment, the abnormal type identifier 0 represents the software abnormality of the VCU, and the abnormal type identifier 1 represents the mechanical abnormality of the VCU; the anomaly type identifier 0 can be further subdivided, such as being subdivided into 00 and 01, where 00 characterizes UI anomalies of the VCU and 01 characterizes other anomalies of the VCU.
And the signal generator generates an abnormal characteristic signal according to the automobile function module identifier and the abnormal type identifier. For example, the reference amplitude is bV, and if the automobile function identifier received by the signal generator is 01 and the abnormal type identifier is 01, the signal generator generates an abnormal characteristic signal with the amplitude of 5 bV; if the automobile function identifier received by the signal generator is 10 and the abnormal type identifier is 01, the signal generator generates an abnormal characteristic signal with the amplitude of 9 bV; if the automobile function identifier received by the signal generator is 11 and the abnormality type identifier is 00, the signal generator generates an abnormality characteristic signal with the amplitude of 12 bV.
For example, if the reference amplitude is cV, if the automobile function identifier received by the signal generator is 01 and the abnormal type identifier is 0, the signal generator generates an abnormal characteristic signal with an amplitude of 2 cV; if the automobile function identifier received by the signal generator is 10 and the abnormal type identifier is 1, the signal generator generates an abnormal characteristic signal with the amplitude of 5 cV; if the automobile function identifier received by the signal generator is 11 and the abnormality type identifier is 0, the signal generator generates an abnormality characteristic signal with the amplitude of 6 cV.
In one example, there is a one-to-one correspondence between the vehicle function modules and their abnormal types and the abnormal characteristic signals, and the amplitudes of the abnormal characteristic signals mapped by the same abnormal type are different for different vehicle function modules; the amplitudes of the abnormal characteristic signals mapped by the same automobile function module are different for different abnormal types.
And S204, if the detection information comprises the working normal information of the automobile function module A, the signal generator generates a normal characteristic signal of the automobile function module A according to the working normal information of the automobile function module A.
It should be noted here that the detection information includes information that the vehicle function module a is operating normally, i.e., the detection information is used to indicate that the vehicle function module a is operating normally.
It should be noted that, if N automobile function modules all work normally, the signal generator generates N heartbeat signals, the N automobile function modules correspond to the N heartbeat signals one to one, and the frequency or amplitude of the heartbeat signals are different, so that after receiving the heartbeat signals, the external device can determine the automobile function modules that work normally according to the amplitude or frequency of the heartbeat signals, where N is an integer greater than 1.
And S205, the signal generator sends the abnormal characteristic signal or the normal characteristic signal to the external equipment through the communication device.
And S206, the external equipment carries out corresponding processing according to the received characteristic signal.
Specifically, if the characteristic signal received by the external device is a normal characteristic signal, the external device determines the frequency or amplitude of the characteristic signal to determine the automobile functional module which normally works. If the characteristic signal received by the external equipment is an abnormal characteristic signal, the external equipment determines the automobile function module with abnormal work according to the frequency or amplitude value of the abnormal characteristic signal, and then processes the automobile function module with abnormal work to eliminate the abnormality. Furthermore, the external device can also determine the automobile functional module with abnormal work and the abnormal type thereof according to the amplitude value of the abnormal characteristic signal, and the external device performs corresponding processing on the abnormal functional module according to the abnormal type of the automobile functional module with abnormal work so as to eliminate the fault.
For example, if the external device is a mobile phone, a pad, or other user terminal, when the user terminal receives an abnormal characteristic signal, an alarm is pushed to the user or a sound alarm is sent; further, if the user terminal determines that the UI of the human-computer interaction interface is abnormal according to the abnormal characteristic signal, the user terminal replaces the UI of the human-computer interaction interface with the screen of the user terminal, or the user terminal calls a related APP to replace the UI of the human-computer interaction interface, so that the user can complete related operations.
For another example, if the external device is an intelligent wearable device, when the intelligent wearable device receives the abnormal characteristic signal, the intelligent wearable device sends a sound alarm and/or a vibration alarm to inform the user of the failure of the automobile function module.
For another example, if the external device is a cloud (server), when the cloud (server) receives the abnormal characteristic signal, the cloud (server) may send sound alarm information and/or vibration alarm information to the handheld device of the user, so that the handheld device of the user sends a sound alarm and/or vibration alarm to inform the user of the failure of the car function module, or the cloud (server) sends a restart request or a hosting request of the car function module to the central gateway, where the restart request of the car function module is used to indicate that the car function module with abnormal operation is restarted through the central gateway, and the hosting request is used to request that the driving state of the vehicle is switched from the automatic driving state to the manual driving state.
Further, when the cloud (server) determines that the software of the BCM is abnormal according to the abnormal characteristic signal, the cloud (server) can send a BCM restart request to the central gateway through the communication device to request to restart the software of the BCM through the central gateway, and meanwhile, other automobile function modules are guaranteed not to be influenced by the BCM.
In one possible embodiment, if it is determined that the vehicle function module a is operating normally, the detection device does not send the detection information of the vehicle function module a to the signal generator. If the signal generator does not receive the state information of the automobile function module within the preset time length, the signal generator determines that the automobile function module works normally, generates a normal characteristic signal of the automobile function module A, and sends the normal characteristic signal to the external equipment through the communication device so as to inform the external equipment that the automobile function module A works normally.
In one possible embodiment, when the vehicle function module a works normally, the signal generator periodically sends a normal characteristic signal of the vehicle function module a to the external device; and if the automobile function module A works abnormally, the signal generator stops sending the normal characteristic signal of the automobile function module A to external equipment. The external equipment can determine whether the automobile function module works normally according to whether the normal heartbeat signal of the automobile function module A is received.
In a possible embodiment, for one or more vehicle function modules in the vehicle, if it is determined that the one or more vehicle function modules all work normally according to the manner of steps S201-S202, the signal generator does not send any signal to the external device; if the abnormal work of the automobile function module A is determined, the signal generator generates an abnormal characteristic signal of the automobile function module A, and sends the abnormal characteristic signal of the automobile function module A to external equipment through the communication device so as to inform the external equipment that the automobile function module A works abnormally, so that the external equipment takes corresponding measures to eliminate the abnormal work.
In a possible embodiment, the signal generator may also be connected to the detection means and the communication means via ethernet lines or other media.
In a possible embodiment, the signal generator may also be connected to the diagnostic module and the communication device via an ethernet line or other medium.
It can be seen that, in the solution of the embodiment of the present invention, the detection device obtains the working states of one or more automobile function modules, so that the signal generator generates corresponding characteristic signals, and sends the characteristic signals to the external device through the communication device, so that the external device can know whether each automobile function module is abnormal in real time, and perform corresponding processing. The embodiment of the invention is beneficial to accurately detecting whether each automobile functional module is abnormal or not, and when the automobile functional module works abnormally, the external equipment can take corresponding operation to ensure the normal running of the automobile and improve the user experience.
Referring to fig. 4, fig. 4 is a schematic diagram of an architecture of an automobile fault detection system according to an embodiment of the present invention. The system is applied to fault detection of a vehicle, and the vehicle fault detection system 400 includes:
the detecting device 401 is configured to obtain state information of the automobile function module a, generate detection information according to the state information of the automobile function module a, and send the detection information to the signal generator, where the detection information is used to indicate whether the automobile function module a works normally; the automobile function module A is any one of one or more automobile function modules in an automobile;
a signal generator 402 for generating a characteristic signal based on the detection information and transmitting the characteristic signal to a communication device of the vehicle; the communication device sends the characteristic signal to the external equipment, so that the external equipment determines whether the work of the automobile function module A is abnormal or not according to the characteristic signal.
Here, data transmission is performed between the detection device 401 and the signal generator 402 by using a CAN bus.
In a possible embodiment, the detection information includes normal operation information or abnormal operation information, the characteristic signal includes an abnormal characteristic signal and a heartbeat signal, and the signal generator 402 is specifically configured to:
if the detection information is work abnormal information, generating an abnormal characteristic signal according to the work abnormal information;
and if the detection information is normal work information, generating a heartbeat signal according to the normal work information.
In a possible embodiment, the work exception information includes an automobile function module identifier and an exception type identifier, the automobile function module identifier is used to indicate the automobile function module a, and in terms of generating the exception characteristic signal according to the work exception information, the signal generator 402 is specifically configured to:
and generating an abnormal characteristic signal according to the automobile function module identifier and the abnormal type identifier, wherein the automobile function module identifier and the abnormal type identifier correspond to the amplitude of the abnormal characteristic signal one by one.
In a possible embodiment, the status information includes whether the detection device receives a response message sent by the vehicle function module a after sending the first keep alive message to the vehicle function module a, and the detection information includes normal operation information or abnormal operation information, and in terms of generating the detection information according to the status information of the vehicle function module a, the detection device 401 is specifically configured to:
if the state information comprises a response message sent by the automobile function module A after the detection device sends a first keep alive message to the automobile function module A, determining that the automobile function module A works normally, and generating normal working information;
and if the state information comprises that the response message sent by the automobile function module A is not received after the detection device sends the first keep-alive message to the automobile function module A, determining that the automobile function module A works abnormally, and generating abnormal working information.
In a possible embodiment, the status information includes that the detection device receives a second keep-alive message or an abnormal message sent by the vehicle function module a, the detection information includes normal operation information or abnormal operation information, and in terms of generating the detection information according to the status information of the vehicle function module a, the detection device 401 is specifically configured to:
if the state information comprises the second keep-alive message sent by the automobile function module A, determining that the automobile function module A works normally, and generating normal working information;
and if the state information comprises the received abnormal information sent by the automobile function module A, determining that the automobile function module A works abnormally, and generating abnormal working information.
In one possible embodiment, the detection device 401 comprises:
the central gateway 4011 is configured to obtain state information of the automobile function module a;
and the diagnosis module 4012 is configured to generate detection information according to the state information of the car function module a, and transmit the detection information to the signal generator.
It should be noted that the central gateway 4011 and the diagnostic module 4012 use an ethernet line or a CAN bus for data transmission.
In a possible embodiment, the state information includes whether the central gateway 4011 receives a response message of the automotive function module a after sending the first keep alive message to the automotive function module a, the detection information includes normal operation information or abnormal operation information, and in terms of generating the detection information according to the state information of the automotive function module a, the diagnosis module 4012 is specifically configured to:
if the state information comprises that the central gateway 4011 sends a first keep-alive message to the automobile function module A and then receives the keep-alive message sent by the automobile function module A, determining that the automobile function module A works normally, and generating normal-working information;
if the state information includes that the keep-alive message sent by the automobile function module A is not received after the central gateway 4011 sends the first keep-alive message to the automobile function module A, it is determined that the automobile function module A works abnormally, and abnormal working information is generated.
In a possible embodiment, the status information includes that the central gateway 4011 receives a second keep-alive message or an abnormal message sent by the car function module a, the detection information includes normal operation information or abnormal operation information, and in terms of generating the detection information according to the status information of the car function module a, the diagnosis module 4012 is specifically configured to:
if the state information comprises that the central gateway 4011 receives a second keep-alive message actively sent by the automobile function module A, determining that the automobile function module A works normally, and generating normal working information;
if the state information includes that the central gateway 4011 receives an abnormal message actively sent by the automobile function module a, it is determined that the automobile function module a works abnormally, and abnormal working information is generated.
It should be noted that, the detailed descriptions of the detecting apparatus 401 (including the central gateway 4011 and the diagnosis module 4012) and the signal generator 402 can be referred to the related descriptions of steps S201 to S204, and will not be described herein.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one type of logical functional division, and other divisions may be realized in practice, for example, multiple 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 of some interfaces, devices or units, and may be an electric 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 integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable memory. 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 memory and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The above embodiments of the present invention are described in detail, and the principle and the implementation of the present invention are explained by applying specific embodiments, and the above description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in view of the above, the content of the present specification should not be construed as a limitation to the present invention.

Claims (14)

1. A vehicle fault detection method is applied to fault detection of a vehicle, the vehicle comprises one or more vehicle functional modules, a vehicle fault detection system and a communication device, the vehicle fault detection system is characterized by comprising a detection device and a signal generator, and the method comprises the following steps:
the detection device acquires state information of an automobile function module A, generates detection information according to the state information of the automobile function module A, and sends the detection information to the signal generator, wherein the detection information is used for indicating whether the automobile function module A works normally or not, and the automobile function module A is any one of the one or more automobile function modules; the state information of the automobile function module A comprises whether the detection device receives a response message of the automobile function module A after sending a first keep-alive message to the automobile function module A, and whether the detection device receives a second keep-alive message or an abnormal message actively sent by the automobile function module A;
the signal generator generates a characteristic signal according to the detection information and sends the characteristic signal to the communication device;
the communication device sends the characteristic signal to external equipment so that the external equipment can determine whether the work of the automobile function module A is abnormal or not according to the characteristic signal;
the detection information includes work abnormality information, the characteristic signal includes an abnormal characteristic signal, and the signal generator generates the characteristic signal according to the detection information, including:
if the detection information is work abnormal information, the signal generator generates the abnormal characteristic signal according to the work abnormal information;
the work abnormality information includes an automobile function module identifier and an abnormality type identifier, the automobile function module identifier is used for indicating the automobile function module a, and the signal generator generates the abnormality characteristic signal according to the work abnormality information includes:
generating the abnormal characteristic signal according to the automobile function module identification and the abnormal type identification, wherein the automobile function module identification and the abnormal type identification correspond to the amplitude of the abnormal characteristic signal one by one; for different automobile function modules, the amplitudes of the abnormal characteristic signals mapped by the same abnormal type are different; the amplitudes of the abnormal characteristic signals mapped by the same automobile function module are different for different abnormal types.
2. The method of claim 1, wherein the detection information includes normal operation information, the characteristic signal includes a heartbeat signal, the signal generator generates the characteristic signal based on the detection information, and further comprising:
and if the detection information is normal work information, the signal generator generates the heartbeat signal according to the normal work information.
3. The method according to any one of claims 1-2, wherein the detection information includes normal operation information or abnormal operation information, and the detection device generates detection information according to the status information of the vehicle function module a, including:
if the state information of the automobile function module A comprises a response message of the automobile function module A received by the detection device after the detection device sends a first keep alive message to the automobile function module A, the detection device determines that the automobile function module A works normally and generates normal working information;
if the state information of the automobile function module A comprises that the detection device does not receive the response message of the automobile function module A after sending the first keep alive message to the automobile function module A, the detection device determines that the automobile function module A works abnormally and generates the working abnormal information.
4. The method according to any one of claims 1-2, wherein the detection information includes normal operation information or abnormal operation information, and the detection device generates detection information according to the status information of the vehicle function module a, including:
if the state information of the automobile function module A comprises that the detection device receives a second keep-alive message actively sent by the automobile function module A, the detection device determines that the automobile function module A works normally and generates normal working information;
if the state information of the automobile function module A comprises that the detection device receives an abnormal message actively sent by the automobile function module A, the detection device determines that the automobile function module A works abnormally and generates the working abnormal information.
5. The method according to any one of claims 1-2, wherein the detection device comprises a central gateway and a diagnosis module, and the detection device acquires status information of a vehicle function module a, generates detection information according to the status information of the vehicle function module a, and sends the detection information to the signal generator, and comprises:
the central gateway acquires the state information of the automobile function module A;
the diagnosis module generates the detection information according to the state information of the automobile function module A and transmits the detection information to the signal generator.
6. The method according to claim 5, wherein the status information of the vehicle function module A includes whether the central gateway receives a response message of the vehicle function module A after sending a first keep alive message to the vehicle function module A, the detection information includes normal operation information or abnormal operation information, and the diagnostic module generates detection information according to the status information of the vehicle function module A, including:
if the state information of the automobile function module A comprises a response message of the automobile function module A received after the central gateway sends a first keep alive message to the automobile function module A, the diagnosis module determines that the automobile function module A works normally and generates normal working information;
if the state information of the automobile function module A comprises that the central gateway does not receive a response message of the automobile function module A after sending the first keep alive message to the automobile function module A, the diagnosis module determines that the automobile function module A works abnormally and generates working abnormal information.
7. The method according to claim 5, wherein the status information of the vehicle function module A comprises a second keep-alive message or an abnormal message actively sent by the vehicle function module A received by the central gateway, the detection information comprises normal operation information or abnormal operation information, and the diagnostic module generates the detection information according to the status information of the vehicle function module A, and comprises:
if the state information of the automobile function module A comprises a second keep-alive message actively sent by the central gateway to receive the automobile function module A, the diagnosis module determines that the automobile function module A works normally and generates the normal working information;
if the state information of the automobile function module A comprises the abnormal information which is actively sent by the automobile function module A and received by the central gateway, the diagnosis module determines that the automobile function module A works abnormally and generates the abnormal working information.
8. A vehicle fault detection system for fault detection of a vehicle, comprising:
the detection device is used for acquiring the state information of the automobile function module A, generating detection information according to the state information of the automobile function module A and sending the detection information to the signal generator, wherein the detection information is used for indicating whether the automobile function module A works normally or not; the automobile function module A is any one of one or more automobile function modules in the automobile; the state information of the automobile function module A comprises whether the detection device receives a response message of the automobile function module A after sending a first keep-alive message to the automobile function module A, and whether the detection device receives a second keep-alive message or an abnormal message actively sent by the automobile function module A;
the signal generator is used for generating a characteristic signal according to the detection information and transmitting the characteristic signal to a communication device of the automobile so as to send the characteristic signal to an external device through the communication device, and the external device determines whether the work of the automobile function module A is abnormal or not according to the characteristic signal;
the detection information includes work abnormality information, the feature signal includes an abnormality feature signal, and in the aspect of generating the feature signal according to the detection information, the signal generator is specifically configured to:
if the detection information is work abnormal information, generating the abnormal characteristic signal according to the work abnormal information;
the work abnormality information includes an automobile function module identifier and an abnormality type identifier, the automobile function module identifier is used to indicate the automobile function module a, and in the aspect of generating the abnormality characteristic signal according to the work abnormality information, the signal generator is specifically configured to:
generating the abnormal characteristic signal according to the automobile function module identification and the abnormal type identification, wherein the automobile function module identification and the abnormal type identification correspond to the amplitude of the abnormal characteristic signal one by one; for different automobile function modules, the amplitudes of the abnormal characteristic signals mapped by the same abnormal type are different; the amplitudes of the abnormal characteristic signals mapped by the same automobile function module are different for different abnormal types.
9. The system of claim 8, wherein the detection information includes health information, the characteristic signal includes a heartbeat signal, and in the aspect of generating the characteristic signal based on the detection information, the signal generator is further configured to:
and if the detection information is normal work information, generating the heartbeat signal according to the normal work information.
10. The system according to any one of claims 8 to 9, wherein the detection information includes normal operation information or abnormal operation information, and in the aspect of generating the detection information according to the status information of the car function module a, the detection device is specifically configured to:
if the state information comprises that the detection device sends a first keep alive message to the automobile function module A and then receives a response message sent by the automobile function module A, determining that the automobile function module A works normally, and generating normal working information;
and if the state information comprises that the response message sent by the automobile function module A is not received after the detection device sends the first keep alive message to the automobile function module A, determining that the automobile function module A works abnormally, and generating the working abnormal information.
11. The system according to any one of claims 8 to 9, wherein the detection information includes normal operation information or abnormal operation information, and in the aspect of generating the detection information according to the status information of the car function module a, the detection device is specifically configured to:
if the state information comprises the second keep-alive message sent by the automobile function module A, determining that the automobile function module A works normally, and generating normal working information;
and if the state information comprises the received abnormal information sent by the automobile function module A, determining that the automobile function module A works abnormally, and generating the working abnormal information.
12. The system according to any one of claims 8-9, wherein the detection means comprises a central gateway and a diagnostic module,
the central gateway is used for acquiring the state information of the automobile function module A;
the diagnosis module is used for generating the detection information according to the state information of the automobile function module A and transmitting the detection information to the signal generator.
13. The system according to claim 12, wherein the status information includes whether a response message of the vehicle function module a is received after the central gateway sends a first keep alive message to the vehicle function module a, the detection information includes normal operation information or abnormal operation information, and in the aspect of generating the detection information according to the status information of the vehicle function module a, the diagnosis module is specifically configured to:
if the state information comprises that the central gateway sends a first keep-alive message to the automobile function module A and then receives the keep-alive message sent by the automobile function module A, determining that the automobile function module A works normally and generating normal working information;
and if the state information comprises that the keep-alive message sent by the automobile function module A is not received after the central gateway sends the first keep-alive message to the automobile function module A, determining that the automobile function module A works abnormally, and generating the abnormal working information.
14. The system according to claim 12, wherein the status information includes a second keep-alive message or an abnormal message sent by the vehicle function module a received by the central gateway, the detection information includes normal operation information or abnormal operation information, and in the aspect of generating the detection information according to the status information of the vehicle function module a, the diagnosis module is specifically configured to:
if the state information comprises that the central gateway receives a second keep-alive message actively sent by the automobile function module A, determining that the automobile function module A works normally, and generating normal working information;
and if the state information comprises that the central gateway receives an abnormal message actively sent by the automobile function module A, determining that the automobile function module A works abnormally, and generating the working abnormal information.
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