CN116540666A - Vehicle diagnosis system, method, electronic equipment and medium based on TBOX - Google Patents
Vehicle diagnosis system, method, electronic equipment and medium based on TBOX Download PDFInfo
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- CN116540666A CN116540666A CN202310464986.7A CN202310464986A CN116540666A CN 116540666 A CN116540666 A CN 116540666A CN 202310464986 A CN202310464986 A CN 202310464986A CN 116540666 A CN116540666 A CN 116540666A
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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
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0262—Confirmation of fault detection, e.g. extra checks to confirm that a failure has indeed occurred
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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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses a vehicle diagnosis system, a method, electronic equipment and a medium based on TBOX, wherein the system comprises: the cloud platform is used for monitoring the rear end of vehicle diagnosis, realizing remote information receiving, diagnosis data storage and processing of vehicle diagnosis, and informing the user side of alarm information through a preset diagnosis alarm interface when the vehicle is abnormal; the vehicle-mounted communication terminal TBOX is in communication connection with the cloud platform through a preset diagnosis service interaction interface and is used for network access management, remote vehicle control function and vehicle data acquisition of the vehicle; the MCU is in communication connection with the vehicle-mounted communication terminal TBOX and is used for managing power supply, forwarding vehicle data and exchanging information with one or more Electronic Control Units (ECU); experience field controller EDC and external device. The system of the invention is used for diagnosing the vehicle, and the problems of poor reusability, difficult call of heterogeneous platforms and poor interoperability of the traditional vehicle fault diagnosis mechanism are well solved.
Description
Technical Field
The invention relates to the technical field of automobile diagnosis, in particular to a vehicle diagnosis system, a vehicle diagnosis method, electronic equipment and a vehicle diagnosis medium based on TBOX.
Background
The vehicle fault diagnosis technology plays an important role in ensuring the normal operation of the automobile, and the application research of the vehicle remote fault diagnosis technology is more and more in depth. With the rapid development of technologies such as the internet of vehicles, intelligent cabins, automatic driving, V2X and the like, a control system of a vehicle has entered a stage of multiple platforms, multiple systems and multiple functions, and the calculation power and functions of the vehicle are greatly improved, and meanwhile, new requirements are also provided for the vehicle fault diagnosis technology. Software systems and applications for vehicles are evolving rapidly and have become a critical part of the regular functioning of vehicles.
The traditional vehicle fault diagnosis mechanism is designed aiming at the ECU under the same software and hardware architecture, only comprises traditional diagnosis objects with the functions of bottom components such as machinery, energy, electronics and the like, is not suitable for the multi-core, heterogeneous and configurable scenes of a vehicle system, and has the defects of poor reusability, difficult heterogeneous platform calling and poor interoperability.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a vehicle diagnosis system, method, electronic device and medium based on TBOX, which are used for solving the problems of poor reusability, difficult heterogeneous platform call and poor interoperability of the traditional vehicle fault diagnosis mechanism.
In order to achieve the above effects, the technical scheme of the invention is as follows:
in a first aspect, the present invention provides a TBOX-based vehicle diagnostic system comprising:
the cloud platform is used for monitoring the rear end of vehicle diagnosis, realizing remote information receiving, diagnosis data storage and processing of vehicle diagnosis, and informing the user side of alarm information through a preset diagnosis alarm interface when the vehicle is abnormal;
the vehicle-mounted communication terminal TBOX is in communication connection with the cloud platform through a preset diagnosis service interaction interface and is used for network access management, remote vehicle control function and vehicle data acquisition of the vehicle; the method comprises the steps of analyzing and executing diagnosis business, collecting, storing and reporting information; a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal internally maintains a diagnosis list, updates the diagnosis list according to dynamic diagnosis information, and forms a file for storage;
the MCU is in communication connection with the vehicle-mounted communication terminal TBOX and is used for managing power supply, forwarding vehicle data and exchanging information with one or more Electronic Control Units (ECU); the power management is used for powering up and powering down the vehicle at high voltage, waking up the vehicle by dormancy and managing power supply of each control unit;
the experience domain controller EDC is in communication connection with a vehicle-mounted communication terminal TBOX, and comprises functions of an entertainment system, a man-machine interaction interface, automatic driving, OTA and V2X application;
the external equipment, namely the intelligent cabin domain control system, is in communication connection with the experience domain controller EDC, and comprises a display screen, a camera, a sound and a microphone.
Furthermore, the vehicle-mounted communication terminal TBOX is also connected with a communication module, a GPS and a USB; the communication module is used for managing a SIM card preset by the vehicle, monitoring the working state of the SIM card and acquiring working state data of the SIM card; the GPS is used for realizing the positioning of the vehicle; the USB is used for realizing data connection between the vehicle and external equipment.
Further, the vehicle-mounted communication terminal TBOX is connected with the MCU through an SPI serial port and a UART serial port; and the MCU micro-control unit exchanges information with one or more Electronic Control Units (ECU) through the CAN bus.
Further, the system is based on an SOA framework, and encapsulates the vehicle diagnosis system into a layered structure of a standard vehicle diagnosis system, and the layered structure comprises a mechanical layer, an energy layer, an electronic electric layer, a system platform layer and a functional application layer which are mutually connected from bottom to top and mutually communicated; wherein,,
the mechanical layer is used for a mechanical system for vehicle movement and comprises a braking system, a suspension system, a steering system and a thermal management system of the vehicle;
the energy layer is used for storing, converting and transmitting vehicle energy and comprises an oil tank, a battery, an engine, a motor and a transmission system;
the electronic electric layer is used for converting the power assembly, entertainment information and on-board information of driving control of a vehicle into an electronic electric architecture of actual physical layout and electronic signals, and comprises a wire harness, a controller, an Ethernet port, an SPI serial port, a UART serial port, a chip, an I/O port, a peripheral module, a GPS, a communication antenna, safety system hardware and a network hardware interface;
the system platform layer comprises a system function of an operating system, a bottom layer driver, a memory and a firewall of a vehicle, and a platform service function of a network management module, a database, a vehicle-machine side middleware and hardware abstraction;
the function application layer comprises an entertainment system of a cabin, a man-machine interaction interface, remote car control, automatic driving, OTA and V2X application.
Further, according to the hierarchical structure of the vehicle diagnostic system, the diagnostic modes are classified into the following three categories:
MCU diagnosis: the method comprises the steps of power supply state diagnosis and CAN bus diagnosis, wherein the power supply state diagnosis is used for diagnosing the first part of the electronic and electric state of the electronic and electric layer; the first part of the electronic and electric states of the electronic and electric layer comprise electronic and electric states of a chip, an I/O port, a peripheral module, a GPS and a communication antenna; the CAN bus diagnosis is that the CAN bus is used for the mechanical layer and the energy layer to be detected and perceived by the MCU micro-control unit, so that MCU diagnosis is realized;
TBOX diagnosis: the system comprises a second part of electronic and electric state diagnosis of an electronic and electric layer, a system platform layer state diagnosis and a function application layer state diagnosis, wherein the second part of electronic and electric state of the electronic and electric layer comprises electronic and electric states of an Ethernet port, an SPI serial port and a UART serial port;
EDC diagnosis: the system platform layer state diagnosis and the function application layer state diagnosis are included, the function application layer is deployed on the experience domain controller EDC, and corresponding diagnosis states can be provided by the experience domain controller EDC to realize EDC diagnosis.
Further, the diagnostic items in the diagnostic list are classified into two categories, the first category of diagnostic items: the vehicle side actively diagnoses and reports the cloud platform, and the MCU detects the state of a mechanical layer, the state of an energy layer and the state of an electronic electric layer through the CAN bus network; the vehicle-mounted communication terminal TBOX preset diagnosis module performs record updating, storage and reporting on a first type diagnosis item, wherein the first type diagnosis item function is realized by the MCU micro-control unit diagnosis acquisition function;
a second type of diagnostic item: the cloud platform initiates a diagnosis request to the vehicle side according to the diagnosis requirement of the user, and the vehicle-mounted communication terminal TBOX and the experience domain controller EDC perform periodic detection on the electronic electric layer and the diagnosis items above, wherein the second type of diagnosis items do not pass through the CAN bus; the diagnosis content of the diagnosis module preset by the TBOX of the vehicle-mounted communication terminal comprises diagnosis of the second part of the electronic electric state, the function application layer state and the system platform layer state of the electronic electric layer.
In a second aspect, the present invention provides a vehicle diagnostic method based on TBOX, the diagnostic process of the first type of diagnostic item comprising the steps of:
step 1: the method comprises the steps of initializing, including the initialization of the diagnosis functions of a vehicle-mounted communication terminal TBOX, an experience domain controller EDC and an MCU micro-control unit, the establishment and maintenance of a diagnosis list by a diagnosis module preset by the vehicle-mounted communication terminal TBOX;
step 2: after initialization is completed, a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal sequentially acquires diagnosis results from the TBOX of the vehicle-mounted communication terminal and the EDC of the experience domain controller according to the second type of diagnosis items in the diagnosis list, and updates the diagnosis results into the diagnosis list;
step 3: waiting according to preset waiting time, and checking whether the MCU micro-control unit reports the first type of diagnosis item information;
step 4: if the MCU micro-control unit reports the diagnosis result of the first type of diagnosis items within the waiting time preset in the step 3, updating the corresponding diagnosis items in the diagnosis list; otherwise, a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal initiates a diagnosis request of a first type of diagnosis items to the MCU micro-control unit;
if the MCU normally responds to the request and reports the diagnosis result, updating the corresponding diagnosis items in the diagnosis list, otherwise defaulting the diagnosis result of the first type of diagnosis items to be abnormal, and writing the diagnosis result into the diagnosis list;
step 5: reporting the diagnosis information in the diagnosis list to a cloud platform;
step 6: monitoring whether the MCU micro control unit reports the diagnosis information, if yes, updating the diagnosis list and reporting the updated diagnosis list to the cloud platform, wherein the diagnosis information state is inconsistent with the state in the diagnosis list;
the MCU micro-control unit reports the diagnosis information, namely the state of the diagnosis item is changed, the MCU micro-control unit reports the diagnosis item to a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal, and the diagnosis item without the change does not report the diagnosis item;
step 7: the diagnosis module preset by the TBOX of the vehicle-mounted communication terminal inquires the second type of diagnosis items in a first period, wherein the diagnosis comprises diagnosis of the TBOX of the vehicle-mounted communication terminal and the EDC of the experience domain controller, and if the latest diagnosis state is inconsistent with the state in the diagnosis list, the diagnosis list is updated and the changed diagnosis item state is reported to the cloud platform.
Further, the diagnostic process of the second type of diagnostic item comprises the steps of:
step 1: the cloud platform issues a diagnosis request, namely the cloud platform receives the diagnosis request of the user side or initiates the diagnosis request to the vehicle side according to the service requirements of operation, monitoring and debugging;
step 2: after receiving the diagnosis request, a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal analyzes the diagnosis request, and if the diagnosis request can be normally analyzed, the diagnosis module responds to the ACK message to the cloud platform;
step 3: distinguishing the diagnosis items in the diagnosis request one by one, if the diagnosis items in the diagnosis request are the first type of diagnosis items, entering a step 4, otherwise, entering a step 5;
step 4: initiating a diagnosis request to the MCU micro-control unit, if the MCU micro-control unit can normally respond to the diagnosis result in a second period, updating the corresponding diagnosis item state in the diagnosis list, otherwise, setting the diagnosis item state as abnormal;
step 5: judging whether the current diagnosis item is supported by the TBOX of the vehicle-mounted communication terminal, if so, calling a corresponding TBOX diagnosis service to perform state diagnosis, and executing the step 7 after updating the state of the corresponding diagnosis item in the diagnosis list; otherwise, executing the step 6;
step 6: the diagnosis module of the experience domain controller EDC identifies the diagnosis item, judges whether the current diagnosis item is supported by the experience domain controller EDC, if the current diagnosis item is supported by the experience domain controller EDC locally, the corresponding EDC diagnosis service is called to perform state diagnosis, the result is fed back to the diagnosis module preset by the TBOX of the vehicle-mounted communication terminal, and the diagnosis module preset by the TBOX of the vehicle-mounted communication terminal updates the state of the corresponding diagnosis item in the diagnosis list; otherwise, the diagnosis item is identified as the diagnosis item which is not supported by the current version, and the result is fed back to a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal, and the step 7 is executed;
step 7: judging whether all diagnostic items in the diagnostic request are executed, if not, entering a step 3, executing the next diagnostic item, otherwise, executing the step 8;
step 8: and packaging the corresponding diagnosis result in the diagnosis request, and uploading the diagnosis result to the cloud platform.
In a third aspect, the invention provides an electronic device comprising a memory having a computer program stored therein and a processor configured to execute a TBOX-based vehicle diagnostic method by the computer program.
In a fourth aspect, the present invention provides a computer readable storage medium comprising a stored computer program, wherein the computer program when run performs a TBOX based vehicle diagnostic method.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the system diagnosis technical scheme of the invention is expanded to the state diagnosis of the software system and the functional application program of the vehicle terminal, is suitable for the multi-core, heterogeneous and configurable scenes of the vehicle system, and well solves the problems of poor reusability, difficult call of a heterogeneous platform and poor interoperability of the traditional vehicle fault diagnosis mechanism.
The invention combines the application of technologies such as automatic driving, V2X and the like in vehicle-mounted systems, analyzes the diagnosis requirements of each system level, and designs a diagnosis system covering a software and hardware platform so as to solve the problem that the traditional diagnosis technology can not well meet the requirement of a complex vehicle-mounted cabin management system in the future.
Drawings
FIG. 1 is a schematic diagram of a TBOX-based vehicle diagnostic system in accordance with the present invention;
FIG. 2 is a schematic diagram of the layered structure of a TBOX-based vehicle diagnostic system of the present invention;
FIG. 3 is a schematic diagram of a diagnostic mode configuration of a TBOX-based vehicle diagnostic system according to the present invention;
FIG. 4 is a flow chart of a first type of diagnostic items for a TBOX-based vehicle diagnostic method of the present invention;
FIG. 5 is a flow chart of a second type of diagnostic items for a TBOX-based vehicle diagnostic method of the present invention.
Detailed Description
Further advantages and effects of the present invention will become readily apparent to those skilled in the art from the disclosure herein, by referring to the accompanying drawings and the preferred embodiments. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
Before describing the embodiments of the present application, the following definitions are first given for the relative terms referred to in the embodiments of the present application:
TBOX: and the vehicle-mounted communication terminal is mounted on the CAN bus of the automobile, CAN acquire ECU information and sends a control instruction to the hardware equipment of the ECU through a protocol.
And (3) ECU: the electronic control unit, i.e. the vehicle-mounted computer, consists of a microcontroller and peripheral circuits.
EDC: experience Domain Controller, experience Domain controllers.
MCU: microcontroller Unit, a microcontrol unit.
SPI: serial Peripheral Interface the serial peripheral module interface is a synchronous peripheral module interface that enables the single chip microcomputer to communicate with various peripheral devices in a serial manner to exchange information.
V2X: vehicle to X, vehicle to external information exchange;
OTA: the Over-the-Air Technology, is applied to the automobile and is the Technology for realizing the on-board software update through mobile communication.
Examples
The present embodiment proposes a TBOX-based vehicle diagnostic system. Referring to fig. 1, the method includes:
the cloud platform is used for monitoring the rear end of vehicle diagnosis, realizing remote information receiving, diagnosis data storage and processing of vehicle diagnosis, informing the user side APP of alarm information through a preset diagnosis alarm interface when the vehicle is abnormal, and providing a diagnosis data billboard for background personnel;
the vehicle-mounted communication terminal TBOX is in communication connection with the cloud platform through a preset diagnosis service interaction interface and is used for network access management, remote vehicle control function and vehicle data acquisition of the vehicle; main logic for completing diagnosis function of vehicle side, including analysis, execution, information collection, storage and reporting of diagnosis service; a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal internally maintains a diagnosis list, updates the diagnosis list according to dynamic diagnosis information, and forms a file for storage;
the diagnostic information is stored in a file and is used for uploading the diagnostic information during disconnection to the cloud platform when the connection with the cloud platform is recovered (such as when a network is poor), so that the diagnostic state during disconnection with the cloud platform is completely recorded, and the loss of the diagnostic information is avoided;
in this embodiment, the vehicle-mounted communication terminal TBOX is further connected to a communication module, a GPS, and a USB; the communication module is used for managing a SIM card preset by the vehicle, monitoring the working state of the SIM card and acquiring working state data of the SIM card; the GPS is used for realizing the positioning of the vehicle; the USB is used for realizing data connection between the vehicle and external equipment.
On the vehicle side, the invention adopts an independent TBOX form, and the vehicle-mounted communication terminal TBOX is connected with the experience domain controller EDC through the Ethernet.
The MCU is in communication connection with the vehicle-mounted communication terminal TBOX and is used for managing power supply, forwarding vehicle data and exchanging information with one or more Electronic Control Units (ECU); the power management is used for powering up and powering down the vehicle at high voltage, waking up the vehicle by dormancy and managing power supply of each control unit;
in this embodiment, the vehicle-mounted communication terminal TBOX is connected to the MCU through an SPI serial port and a UART serial port; and the MCU micro-control unit exchanges information with one or more Electronic Control Units (ECU) through the CAN bus.
The experience domain controller EDC is in communication connection with the vehicle-mounted communication terminal TBOX, and a main processing unit of the external equipment is used for realizing functions of an entertainment system (functions such as video, music, games and the like), a man-machine interaction interface, automatic driving, OTA and V2X application;
the external equipment, namely the intelligent cabin domain control system, is in communication connection with the EDC (electronic control unit) of the experience domain controller and comprises a display screen, a camera, a sound and a microphone; the display screen is connected with the EDC and used for receiving and displaying entertainment working state data.
As a preferred technical solution, in this embodiment, the system is based on an SOA architecture, and encapsulates a vehicle diagnostic system into a layered structure of a standard vehicle diagnostic system, including a mechanical layer, an energy layer, an electronic electric layer, a system platform layer and a functional application layer, which are connected to each other from bottom to top and are in communication with each other; as shown in fig. 2, wherein,
the mechanical layer is used for directly realizing a layered architecture of an automobile and a mechanical system for vehicle movement, and comprises a braking system, a suspension system, a steering system and a thermal management system (comprising a driving shaft and air inlet and exhaust of the automobile) of the automobile;
the energy layer is used for storing, converting and transmitting vehicle energy and comprises an oil tank, a battery, an engine, a motor, a transmission system and other parts and accessories;
the electronic electric layer is used for converting the power assembly, entertainment information and on-board information of driving control of a vehicle into an electronic electric architecture of actual physical layout and electronic signals, and comprises a wire harness, a controller, an Ethernet port, an SPI serial port, a UART serial port, a chip, an I/O port, a peripheral module, a GPS, a communication antenna, safety system hardware and a network hardware interface; the vehicle is provided with a PCB, and the PCB is connected with a vehicle-mounted communication terminal TBOX through the wire harness; the controller is a domain controller, gateway equipment and a vehicle machine;
the system platform layer comprises a system function of an operating system, a bottom layer driver, a memory and a firewall of a vehicle, and a platform service function of a network management module, a database, a vehicle-machine side middleware and hardware abstraction; the operating system of the vehicle is Android or Linux;
the bottom layer drive comprises a system service, a storage drive, a communication drive, an I/O drive and a complex drive; the network management module comprises a vehicle-mounted application program and a vehicle-mounted middleware; the vehicle-mounted application program can adjust the vehicle-mounted middleware, the vehicle-mounted middleware and the vehicle-mounted enterprise terminal are connected and communicated with each other, and the vehicle-mounted enterprise terminal is used for receiving communication requirements from the vehicle-mounted enterprise terminal application program and the vehicle-mounted middleware.
The function application layer comprises entertainment systems (music, video, navigation, games and the like) of cabins, human-computer interaction interfaces, remote vehicle control, automatic driving, OTA and V2X applications.
As a preferred technical solution, in the present embodiment, according to the layered structure of the vehicle diagnostic system, the diagnostic modes are classified into the following three categories:
MCU diagnosis: the method comprises the steps of power supply state diagnosis and CAN bus diagnosis, wherein the power supply state diagnosis is used for diagnosing the first part of the electronic and electric state of the electronic and electric layer; the first part of the electronic and electric states of the electronic and electric layer comprise electronic and electric states of a chip, an I/O port, a peripheral module, a GPS and a communication antenna; the CAN bus diagnosis is that a CAN bus is used for detecting and sensing a mechanical layer (such as high and low voltage, a vehicle door window and an engine) and an energy layer by an MCU micro-control unit, so that MCU diagnosis is realized;
TBOX diagnosis: the system comprises a second part of electronic and electric state diagnosis of an electronic electric layer, system platform state diagnosis (bottom layer driving, memory, network management module state diagnosis and the like), function application state diagnosis (remote vehicle control state diagnosis and the like), EDC diagnosis acquisition and MCU diagnosis acquisition; the second part of the electronic and electric state of the electronic and electric layer, the system platform layer state and the function application layer state are perceived by the TBOX of the vehicle-mounted communication terminal, so that TBOX diagnosis is realized; the second part of the electronic and electric states of the electronic and electric layer comprise electronic and electric states of an Ethernet port, an SPI serial port and a UART serial port;
EDC diagnosis: the system comprises system platform layer state diagnosis (such as bottom driving state and memory management information diagnosis) and function application layer state diagnosis (such as entertainment system, man-machine interaction interface, automatic driving, V2X, OTA key function and algorithm state diagnosis), wherein the function application layer is deployed on an experience domain controller EDC, and corresponding diagnosis states can be provided by the experience domain controller EDC to realize EDC diagnosis. And interface detection and power supply control of the communication module, the GPS, the display screen, the camera and the audio equipment unit.
In this embodiment, the diagnostic items in the diagnostic list are classified into two types, the first type of diagnostic items: the vehicle side actively diagnoses and reports the cloud platform, and the MCU detects the state of a mechanical layer, the state of an energy layer and the state of an electronic electric layer through the CAN bus network; the vehicle-mounted communication terminal TBOX preset diagnosis module performs record updating, storage and reporting on a first type diagnosis item, wherein the first type diagnosis item function is realized by the MCU micro-control unit diagnosis acquisition function;
a second type of diagnostic item: the cloud platform initiates a diagnosis request to the vehicle side according to the diagnosis requirement of the user, and the vehicle-mounted communication terminal TBOX and the experience domain controller EDC perform periodic detection on the electronic electric layer and the diagnosis items above, wherein the second type of diagnosis items do not pass through the CAN bus; the diagnosis content of the diagnosis module preset by the TBOX of the vehicle-mounted communication terminal comprises diagnosis of the second part of the electronic electric state, the function application layer state and the system platform layer state of the electronic electric layer.
Compared with the prior art, the diagnosis method fully considers the problem of fault diagnosis of the vehicle, effectively improves the accuracy of fault diagnosis and ensures the safety of driving. Compared with the traditional method for processing the vehicle faults, the method can effectively save the time of waiting for the trailer service of the driver due to the vehicle faults, and can further guarantee the safety of the driver. Compared with other remote diagnosis methods in the prior art, the method can ensure the accuracy of vehicle fault diagnosis and ensure the safety of a driver in the driving process.
In another embodiment of the present invention, there is also provided a vehicle diagnosis method based on TBOX, as shown in fig. 4, the diagnosis process of the first type of diagnosis item includes the steps of:
step 1: the method comprises the steps of initializing, including the initialization of the diagnosis functions of a vehicle-mounted communication terminal TBOX, an experience domain controller EDC and an MCU micro-control unit, the establishment and maintenance of a diagnosis list by a diagnosis module preset by the vehicle-mounted communication terminal TBOX;
step 2: after initialization is completed, a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal sequentially acquires diagnosis results from the TBOX of the vehicle-mounted communication terminal and the EDC of the experience domain controller according to the second type of diagnosis items in the diagnosis list, and updates the diagnosis results into the diagnosis list;
step 3: waiting for 3 seconds according to preset waiting time, checking whether the MCU micro-control unit reports the first type diagnosis item information or not so as to leave enough time for the MCU micro-control unit to diagnose the first type diagnosis item and report a diagnosis result;
step 4: if the MCU micro-control unit reports the diagnosis result of the first type of diagnosis items within the waiting time preset in the step 3, updating the corresponding diagnosis items in the diagnosis list; otherwise, a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal initiates a diagnosis request of a first type of diagnosis items to the MCU micro-control unit;
if the MCU normally responds to the request and reports the diagnosis result, updating the corresponding diagnosis items in the diagnosis list, otherwise defaulting the diagnosis result of the first type of diagnosis items to be abnormal, and writing the diagnosis result into the diagnosis list;
step 5: reporting the diagnosis information in the diagnosis list to a cloud platform for synchronizing the initialization information of successful start of the diagnosis function;
step 6: monitoring whether the MCU micro control unit reports the diagnosis information, if yes, updating the diagnosis list and reporting the updated diagnosis list to the cloud platform, wherein the diagnosis information state is inconsistent with the state in the diagnosis list;
the MCU micro-control unit reports the diagnosis information, namely the state of the diagnosis item is changed, the MCU micro-control unit reports the diagnosis item to a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal, and the diagnosis item without the change does not report the diagnosis item;
step 7: the diagnosis module preset by the TBOX of the vehicle-mounted communication terminal inquires the second type of diagnosis items in a first period, wherein the diagnosis comprises diagnosis of the TBOX of the vehicle-mounted communication terminal and the EDC of the experience domain controller, and if the latest diagnosis state is inconsistent with the state in the diagnosis list, the diagnosis list is updated and the changed diagnosis item state is reported to the cloud platform.
The step 6 and the step 7 are two resident functional threads respectively; in the step 6, if no information of the MCU is reported, entering a blocking state; if the MCU micro-control unit reports the message, the MCU micro-control unit enters a monitoring blocking state again after the message processing is finished;
the first period in the step 7 is 5 seconds, and the corresponding functional thread takes the period as one cycle;
in another embodiment of the present invention, there is also provided a vehicle diagnosis method based on TBOX, as shown in fig. 5, the diagnosis process of the second type of diagnosis item includes the steps of:
step 1: the cloud platform issues a diagnosis request, namely the cloud platform receives the diagnosis request of the user side APP or initiates the diagnosis request to the vehicle side according to the service requirements of operation, monitoring and debugging;
step 2: after receiving the diagnosis request, a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal analyzes the diagnosis request, and if the diagnosis request can be normally analyzed, the diagnosis module responds to the ACK message to the cloud platform; if the diagnosis item is an item which is not supported by the current software version, feeding back a message of 'not supporting the diagnosis item currently' to the cloud platform, ending the execution flow, and entering a step 3 by the regularization;
step 3: distinguishing the diagnosis items in the diagnosis request one by one, if the diagnosis items in the diagnosis request are the first type of diagnosis items, entering a step 4, otherwise, entering a step 5;
step 4: initiating a diagnosis request to the MCU micro-control unit, if the MCU micro-control unit can normally respond to the diagnosis result in a second period (1 second), updating the corresponding diagnosis item state in the diagnosis list, otherwise, setting the diagnosis item state as abnormal;
step 5: judging whether the current diagnosis item is supported by the TBOX of the vehicle-mounted communication terminal, if so, calling a corresponding TBOX diagnosis service to perform state diagnosis, and executing the step 7 after updating the state of the corresponding diagnosis item in the diagnosis list; otherwise, executing the step 6;
step 6: the diagnosis module of the experience domain controller EDC identifies the diagnosis item, judges whether the current diagnosis item is supported by the experience domain controller EDC, if the current diagnosis item is supported by the experience domain controller EDC locally, the corresponding EDC diagnosis service is called to perform state diagnosis, the result is fed back to the diagnosis module preset by the TBOX of the vehicle-mounted communication terminal, and the diagnosis module preset by the TBOX of the vehicle-mounted communication terminal updates the state of the corresponding diagnosis item in the diagnosis list; otherwise, the diagnosis item is identified as the diagnosis item which is not supported by the current version, and the result is fed back to a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal, and the step 7 is executed;
step 7: judging whether all diagnostic items in the diagnostic request are executed, if not, entering a step 3, executing the next diagnostic item, otherwise, executing the step 8;
step 8: and packaging the corresponding diagnosis results in the diagnosis request, and uploading the diagnosis results to the cloud platform (realizing feedback of the diagnosis results to the cloud platform).
In another embodiment of the present invention, there is also provided an electronic apparatus including: one or more processors; and storage means for storing one or more programs which, when executed by the one or more processors, cause the vehicle to implement the method of any of the embodiments above.
In this embodiment, a computer system suitable for an electronic device implementing an embodiment of the present invention includes a central processing unit (Central Processing Unit, CPU) that can perform various appropriate actions and processes according to a program stored in a Read-Only Memory (ROM) or a program loaded from a storage section into a random access Memory (Random Access Memory, RAM), for example, performing the method described in the above embodiment. In the RAM, various programs and data required for the system operation are also stored. The CPU, ROM and RAM are connected to each other by a bus. An Input/Output (I/O) interface is also connected to the bus.
The following components are connected to the I/O interface: an input section including a keyboard, a mouse, etc.; an output section including a Cathode Ray Tube (CRT), a liquid crystal display (Liquid Crystal Display, LCD), and the like, and a speaker, and the like; a storage section including a hard disk or the like; and a communication section including a network interface card such as a LAN (Local Area Network ) card, a modem, or the like. The communication section performs communication processing via a network such as the internet. The drives are also connected to the I/O interfaces as needed. Removable media such as magnetic disks, optical disks, magneto-optical disks, semiconductor memories, and the like are mounted on the drive as needed so that a computer program read therefrom is mounted into the storage section as needed.
In this embodiment, the process described above with reference to the flowcharts may be implemented as a computer software program. For example, embodiments of the present invention include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising a computer program for performing the method shown in the flowchart. In such embodiments, the computer program may be downloaded and installed from a network via a communication portion, and/or installed from a removable medium. When being executed by a Central Processing Unit (CPU), performs the various functions defined in the system of the present invention.
It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functions of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the invention. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
In this embodiment, the present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor of a computer, causes the computer to perform the TBOX-based vehicle diagnostic method provided in any of the previous embodiments. The computer-readable storage medium may be included in the electronic device described in the above embodiment or may exist alone without being incorporated in the electronic device.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, and includes several instructions to cause a computing device (may be a personal computer, a server, a touch terminal, or a network device, etc.) to perform the method according to the embodiments of the present invention.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. A TBOX-based vehicle diagnostic system, comprising:
the cloud platform is used for monitoring the rear end of vehicle diagnosis, realizing remote information receiving, diagnosis data storage and processing of vehicle diagnosis, and informing the user side of alarm information through a preset diagnosis alarm interface when the vehicle is abnormal;
the vehicle-mounted communication terminal TBOX is in communication connection with the cloud platform through a preset diagnosis service interaction interface and is used for network access management, remote vehicle control function and vehicle data acquisition of the vehicle; the method comprises the steps of analyzing and executing diagnosis business, collecting, storing and reporting information; a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal internally maintains a diagnosis list, updates the diagnosis list according to dynamic diagnosis information, and forms a file for storage;
the MCU is in communication connection with the vehicle-mounted communication terminal TBOX and is used for managing power supply, forwarding vehicle data and exchanging information with one or more Electronic Control Units (ECU); the power management is used for powering up and powering down the vehicle at high voltage, waking up the vehicle by dormancy and managing power supply of each control unit;
the experience domain controller EDC is in communication connection with a vehicle-mounted communication terminal TBOX, and comprises functions of an entertainment system, a man-machine interaction interface, automatic driving, OTA and V2X application;
the external equipment, namely the intelligent cabin domain control system, is in communication connection with the experience domain controller EDC, and comprises a display screen, a camera, a sound and a microphone.
2. The vehicle diagnosis system based on TBOX of claim 1, wherein the vehicle-mounted communication terminal TBOX is further connected with a communication module, a GPS and a USB; the communication module is used for managing a SIM card preset by the vehicle, monitoring the working state of the SIM card and acquiring working state data of the SIM card; the GPS is used for realizing the positioning of the vehicle; the USB is used for realizing data connection between the vehicle and external equipment.
3. The vehicle diagnosis system based on TBOX of claim 1, wherein the vehicle-mounted communication terminal TBOX is connected with the MCU through an SPI serial port and a UART serial port; and the MCU micro-control unit exchanges information with one or more Electronic Control Units (ECU) through the CAN bus.
4. A TBOX-based vehicle diagnostic system according to claim 3, wherein the system is based on an SOA architecture, encapsulating the vehicle diagnostic system into a hierarchical structure of standard vehicle diagnostic systems, comprising a mechanical layer, an energy layer, an electronic-electric layer, a system platform layer and a functional application layer, which are interconnected and in communication with each other from bottom to top; wherein,,
the mechanical layer is used for a mechanical system for vehicle movement and comprises a braking system, a suspension system, a steering system and a thermal management system of the vehicle;
the energy layer is used for storing, converting and transmitting vehicle energy and comprises an oil tank, a battery, an engine, a motor and a transmission system;
the electronic electric layer is used for converting the power assembly, entertainment information and on-board information of driving control of a vehicle into an electronic electric architecture of actual physical layout and electronic signals, and comprises a wire harness, a controller, an Ethernet port, an SPI serial port, a UART serial port, a chip, an I/O port, a peripheral module, a GPS, a communication antenna, safety system hardware and a network hardware interface;
the system platform layer comprises a system function of an operating system, a bottom layer driver, a memory and a firewall of a vehicle, and a platform service function of a network management module, a database, a vehicle-machine side middleware and hardware abstraction;
the function application layer comprises an entertainment system of a cabin, a man-machine interaction interface, remote car control, automatic driving, OTA and V2X application.
5. The TBOX-based vehicle diagnostic system of claim 4, wherein the diagnostic modes are classified into the following three categories depending on the hierarchical structure of the vehicle diagnostic system:
MCU diagnosis: the method comprises the steps of power supply state diagnosis and CAN bus diagnosis, wherein the power supply state diagnosis is used for diagnosing the first part of the electronic and electric state of the electronic and electric layer; the first part of the electronic and electric states of the electronic and electric layer comprise electronic and electric states of a chip, an I/O port, a peripheral module, a GPS and a communication antenna; the CAN bus diagnosis is that the CAN bus is used for the mechanical layer and the energy layer to be detected and perceived by the MCU micro-control unit, so that MCU diagnosis is realized;
TBOX diagnosis: the system comprises a second part of electronic and electric state diagnosis of an electronic and electric layer, a system platform layer state diagnosis and a function application layer state diagnosis, wherein the second part of electronic and electric state of the electronic and electric layer comprises electronic and electric states of an Ethernet port, an SPI serial port and a UART serial port;
EDC diagnosis: the system platform layer state diagnosis and the function application layer state diagnosis are included, the function application layer is deployed on the experience domain controller EDC, and corresponding diagnosis states can be provided by the experience domain controller EDC to realize EDC diagnosis.
6. The TBOX-based vehicle diagnostic system of claim 5, wherein the diagnostic items in the diagnostic list are divided into two categories, a first category of diagnostic items: the vehicle side actively diagnoses and reports the cloud platform, and the MCU detects the state of a mechanical layer, the state of an energy layer and the state of an electronic electric layer through the CAN bus network; the vehicle-mounted communication terminal TBOX preset diagnosis module performs record updating, storage and reporting on a first type diagnosis item, wherein the first type diagnosis item function is realized by the MCU micro-control unit diagnosis acquisition function;
a second type of diagnostic item: the cloud platform initiates a diagnosis request to the vehicle side according to the diagnosis requirement of the user, and the vehicle-mounted communication terminal TBOX and the experience domain controller EDC perform periodic detection on the electronic electric layer and the diagnosis items above, wherein the second type of diagnosis items do not pass through the CAN bus; the diagnosis content of the diagnosis module preset by the TBOX of the vehicle-mounted communication terminal comprises diagnosis of the second part of the electronic electric state, the function application layer state and the system platform layer state of the electronic electric layer.
7. A vehicle diagnostic method based on TBOX, implemented on the basis of a vehicle diagnostic system as claimed in claims 1-6, characterized in that the diagnostic procedure of the first type of diagnostic item comprises the following steps:
step 1: the method comprises the steps of initializing, including the initialization of the diagnosis functions of a vehicle-mounted communication terminal TBOX, an experience domain controller EDC and an MCU micro-control unit, the establishment and maintenance of a diagnosis list by a diagnosis module preset by the vehicle-mounted communication terminal TBOX;
step 2: after initialization is completed, a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal sequentially acquires diagnosis results from the TBOX of the vehicle-mounted communication terminal and the EDC of the experience domain controller according to the second type of diagnosis items in the diagnosis list, and updates the diagnosis results into the diagnosis list;
step 3: waiting according to preset waiting time, and checking whether the MCU micro-control unit reports the first type of diagnosis item information;
step 4: if the MCU micro-control unit reports the diagnosis result of the first type of diagnosis items within the waiting time preset in the step 3, updating the corresponding diagnosis items in the diagnosis list; otherwise, a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal initiates a diagnosis request of a first type of diagnosis items to the MCU micro-control unit;
if the MCU normally responds to the request and reports the diagnosis result, updating the corresponding diagnosis items in the diagnosis list, otherwise defaulting the diagnosis result of the first type of diagnosis items to be abnormal, and writing the diagnosis result into the diagnosis list;
step 5: reporting the diagnosis information in the diagnosis list to a cloud platform;
step 6: monitoring whether the MCU micro control unit reports the diagnosis information, if yes, updating the diagnosis list and reporting the updated diagnosis list to the cloud platform, wherein the diagnosis information state is inconsistent with the state in the diagnosis list;
step 7: the diagnosis module preset by the TBOX of the vehicle-mounted communication terminal inquires the second type of diagnosis items in a first period, wherein the diagnosis comprises diagnosis of the TBOX of the vehicle-mounted communication terminal and the EDC of the experience domain controller, and if the latest diagnosis state is inconsistent with the state in the diagnosis list, the diagnosis list is updated and the changed diagnosis item state is reported to the cloud platform.
8. A method of vehicle diagnosis based on TBOX as claimed in claim 7, characterized in that the diagnostic procedure of the second type of diagnostic item comprises the steps of:
step 1: the cloud platform issues a diagnosis request, namely the cloud platform receives the diagnosis request of the user side or initiates the diagnosis request to the vehicle side according to the service requirements of operation, monitoring and debugging;
step 2: after receiving the diagnosis request, a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal analyzes the diagnosis request, and if the diagnosis request can be normally analyzed, the diagnosis module responds to the ACK message to the cloud platform;
step 3: distinguishing the diagnosis items in the diagnosis request one by one, if the diagnosis items in the diagnosis request are the first type of diagnosis items, entering a step 4, otherwise, entering a step 5;
step 4: initiating a diagnosis request to the MCU micro-control unit, if the MCU micro-control unit can normally respond to the diagnosis result in a second period, updating the corresponding diagnosis item state in the diagnosis list, otherwise, setting the diagnosis item state as abnormal;
step 5: judging whether the current diagnosis item is supported by the TBOX of the vehicle-mounted communication terminal, if so, calling a corresponding TBOX diagnosis service to perform state diagnosis, and executing the step 7 after updating the state of the corresponding diagnosis item in the diagnosis list; otherwise, executing the step 6;
step 6: the diagnosis module of the experience domain controller EDC identifies the diagnosis item, judges whether the current diagnosis item is supported by the experience domain controller EDC, if the current diagnosis item is supported by the experience domain controller EDC locally, the corresponding EDC diagnosis service is called to perform state diagnosis, the result is fed back to the diagnosis module preset by the TBOX of the vehicle-mounted communication terminal, and the diagnosis module preset by the TBOX of the vehicle-mounted communication terminal updates the state of the corresponding diagnosis item in the diagnosis list; otherwise, the diagnosis item is identified as the diagnosis item which is not supported by the current version, and the result is fed back to a diagnosis module preset by the TBOX of the vehicle-mounted communication terminal, and the step 7 is executed;
step 7: judging whether all diagnostic items in the diagnostic request are executed, if not, entering a step 3, executing the next diagnostic item, otherwise, executing the step 8;
step 8: and packaging the corresponding diagnosis result in the diagnosis request, and uploading the diagnosis result to the cloud platform.
9. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, the processor being arranged to execute the TBOX-based vehicle diagnostic method of claim 7 or claim 8 by the computer program.
10. A computer readable storage medium, characterized in that the computer readable storage medium comprises a stored computer program, wherein the computer program when run performs the TBOX-based vehicle diagnostic method of claim 7 or claim 8.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117679752A (en) * | 2024-02-01 | 2024-03-12 | 深圳市巴科光电科技股份有限公司 | Control method and device for intelligent terminal wearable equipment applying Micro-LED display screen |
| CN117707112A (en) * | 2023-12-22 | 2024-03-15 | 一汽解放汽车有限公司 | Fault diagnosis method, system, equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117707112A (en) * | 2023-12-22 | 2024-03-15 | 一汽解放汽车有限公司 | Fault diagnosis method, system, equipment and storage medium |
| CN117707112B (en) * | 2023-12-22 | 2024-10-11 | 一汽解放汽车有限公司 | Fault diagnosis method, system, equipment and storage medium |
| CN117679752A (en) * | 2024-02-01 | 2024-03-12 | 深圳市巴科光电科技股份有限公司 | Control method and device for intelligent terminal wearable equipment applying Micro-LED display screen |
| CN117679752B (en) * | 2024-02-01 | 2024-05-28 | 深圳市巴科光电科技股份有限公司 | Control method and device for intelligent terminal wearable equipment applying Micro-LED display screen |
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