CN112859814A - DoIP diagnostic system of heterogeneous platform - Google Patents
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- 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
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The invention relates to the technical field of automobile Electronic Control Unit (ECU) diagnosis systems, in particular to a DoIP diagnosis system of a heterogeneous platform, which comprises a tested end and a diagnosis end, wherein the tested end comprises a System On Chip (SOC) and a microcontroller, the diagnosis end is provided with a diagnosis interface, the tested end is provided with an Ethernet interface, and the diagnosis end is connected to the Ethernet interface through the diagnosis interface so as to be connected with the system on chip of the tested end and used for sending fault request data corresponding to a diagnosis function to the system on chip of the tested end; the system on chip is configured with a fault monitoring module and a diagnosis event management module, the microcontroller is configured with a diagnosis communication module and a storage module, and when the fault monitoring module detects that the system on chip generates a fault event, the diagnosis event management module generates a fault code according to the fault event and stores the fault code into the storage module in the microcontroller; the diagnosis end is provided with a diagnosis strategy, and the diagnosis strategy is provided with the following diagnosis steps: a connection step, an activation step, a diagnosis service step and a fault reading step.
Description
Technical Field
The invention relates to the technical field of automobile electronic control unit diagnosis systems, in particular to a DoIP diagnosis system of a heterogeneous platform.
Background
At present, the unified diagnostic service standard (ISO 14229-1: 2006) issued by the international standardization organization and based on the vehicle-mounted Controller Area Network (CAN) network communication architecture is commonly adopted in the same automobile industry at home and abroad. The standard is based on a control core, namely a Microcontroller (MCU), of a conventional vehicle-mounted Electronic Control Unit (ECU), and has been widely applied and accepted in conventional vehicle-mounted ECUs such as an engine controller and a vehicle body controller.
However, with the continuous introduction of new technologies such as artificial intelligence into the automobile industry, it is difficult to be competent by only relying on the MCU with limited performance. At present, a common method is that a high-performance System On Chip (SOC) is introduced to complete a task with high requirements on data transmission and processing in a system design stage, an MCU is used as an interactive node for communicating with a vehicle network, and the two nodes are cooperatively processed to finally realize efficient and reliable operation of the whole ECU.
In the traditional ECU design of a single-core processor, the UDS diagnosis service is usually performed in the MCU, and most of the diagnosis services are based on the CAN bus diagnosis, and in order to meet the current development trend of the internet of vehicles and the requirement of remote diagnosis, the domain controller needs to support the DoIP diagnosis. Currently, for the domain controller, the only ethernet port of the MCU is used for connecting to the internal network of the domain controller, and there is no redundant ethernet port for implementing the DoIP diagnosis.
Disclosure of Invention
The invention aims to provide a DoIP diagnosis system of a heterogeneous platform, which has the advantage of realizing DoIP diagnosis under the condition of ensuring high portability of the original diagnosis service.
In order to achieve the above purpose, the basic scheme of the invention is as follows: a DoIP diagnosis system of a heterogeneous platform comprises a tested end and a diagnosis end, wherein the tested end comprises a system on chip and a microcontroller, the diagnosis end is provided with a diagnosis interface, the tested end is provided with an Ethernet interface, and the diagnosis end is connected to the Ethernet interface through the diagnosis interface so as to be connected with the system on chip of the tested end and used for sending fault request data corresponding to a diagnosis function to the system on chip of the tested end;
the system on chip is configured with a fault monitoring module and a diagnosis event management module, the microcontroller is configured with a diagnosis communication module and a storage module, and when the fault monitoring module detects that the system on chip generates a fault event, the diagnosis event management module generates a fault code according to the fault event and stores the fault code into the storage module in the microcontroller;
the diagnosis end is provided with a diagnosis strategy, and the diagnosis strategy is provided with the following diagnosis steps:
a connection step: the diagnosis end is connected to the Ethernet interface through the diagnosis interface so as to be connected with the system on chip of the tested end;
an activation step: the diagnosis end activates a diagnosis communication module in the microcontroller through the user data protocol message and initiates a diagnosis request to the tested end;
a diagnosis service step: when a diagnosis event management module in the system on chip receives a diagnosis request message, the diagnosis event management module forwards the diagnosis request to a diagnosis communication module in the microcontroller;
a fault reading step: the diagnosis communication module accesses and reads the fault information in the storage module and sends the fault information to the diagnosis end through an Ethernet interface of the system on chip.
Further, the system on chip is configured with an identity authentication module, when the diagnosis terminal is connected with the system on chip, the diagnosis terminal sends an identity authentication identification code to the system on chip, the identity authentication module verifies the identity authentication identification code and generates an authentication result, and when the authentication result is that the authentication is passed, the system on chip sends the diagnosis request to the microcontroller for processing.
Furthermore, the identity authentication module comprises a counting unit, and the counting module automatically adds one for each time of inputting the identity authentication identification code in a time period, and when the accumulated count of the counting unit reaches a preset number of times, the system on chip of the tested end is locked.
Furthermore, the system on chip is configured with a virtual interface, and when the fault monitoring module detects a fault event in the system on chip, the diagnostic event management module obtains fault event information detected by the fault monitoring module, and sends and stores the fault event information in the storage module through the virtual interface.
Furthermore, the diagnosis end is configured with a fault information acquisition module and a fault judgment module, the fault information acquisition module is used for acquiring fault codes stored in the storage module, acquiring fault information of at least one fault according to the fault codes and sending the fault information to the fault judgment module, and the fault judgment module judges the position and the fault type of the fault according to the information transmitted by the information acquisition module.
Further, the fault types comprise power system faults, vehicle body system faults and network transmission system faults, and the power system faults comprise reduced battery pack capacity, overhigh charging voltage, low discharging voltage, large self-discharging, local high temperature, battery arcing breakdown and single battery damage; the vehicle body system faults comprise engine cold vehicle shaking, engine hot vehicle shaking, engine abnormal sound, engine carbon deposition, engine oil leakage and high engine water temperature; the network transmission system faults comprise automobile power system abnormity, automobile multi-channel information transmission system abnormity and node faults of information transmission units.
Furthermore, the diagnosis end is also provided with a fault processing module, the fault processing module comprises an early warning prompting unit and an action executing unit, and the early warning prompting unit is used for indicating faults according to fault information and reminding maintenance personnel to check and process the faults.
Further, when the fault information acquired by the fault information acquisition module is diagnosed as a power system fault by the fault judgment module, the action execution unit executes the action of disconnecting the charging connector; when the fault information acquired by the fault information acquisition module is diagnosed as an engine fault by the fault judgment module, the action execution unit executes an engine flameout action; when the fault information acquired by the fault information acquisition module is diagnosed as a vehicle-mounted network fault by the fault judgment module, the action execution unit executes the power-off action of the automobile power system.
Compared with the prior art, the scheme has the beneficial effects that:
1. the method comprises the steps that a fault monitoring module and a diagnosis event management module are configured on a system on chip, a diagnosis communication module and a storage module are configured in a microcontroller, and when the fault monitoring module detects that the system on chip generates a fault event, the diagnosis event management module generates a fault code according to the fault event and stores the fault code into the storage module in the microcontroller; the diagnosis end sequentially passes through the connection step, the activation step, the diagnosis service step and the fault reading step, can access and read the fault information of the on-chip system in the storage module, and can perform DoIP diagnosis through the Ethernet port interface.
2. The vehicle-mounted electronic control unit comprises a diagnosis end, a fault information acquisition module, a fault judgment module and a fault processing module, wherein the fault information acquisition module is used for acquiring fault information and sending the acquired fault information to the fault judgment module, the fault judgment module is used for judging the position and the fault type of a fault, an early warning prompting unit in the fault processing module is used for indicating the fault, and meanwhile, an action execution unit is used for executing corresponding actions to ensure that the safety of a vehicle can be ensured under the condition that the vehicle-mounted electronic control unit fails.
Drawings
FIG. 1 is a system architecture diagram of the present invention;
FIG. 2 is a diagnostic flow diagram of the system of the present invention.
Reference numerals in the drawings of the specification include: the system comprises a diagnosis terminal 1, a fault processing module 2, a fault judgment module 3, a fault information acquisition module 4, a diagnosis communication module 5, an identity authentication module 6, a fault monitoring module 7, a diagnosis event management module 8, a storage module 9, a system on chip 10, a microcontroller 11 and a tested terminal 12.
Detailed Description
The invention will be described in further detail by means of specific embodiments with reference to the accompanying drawings:
example (b):
a DoIP diagnosis system of a heterogeneous platform is shown in figure 1 and comprises a tested end 12 and a diagnosis end 1, wherein the tested end 12 comprises a system-on-chip 10 and a microcontroller 11, the diagnosis end 1 is an automobile diagnosis instrument, the automobile diagnosis instrument is provided with a diagnosis interface, the tested end 12 is provided with an Ethernet interface, and the diagnosis end 1 is connected to the Ethernet interface through the diagnosis interface so as to be connected with the system-on-chip 10 of the tested end 12 and used for sending fault request data corresponding to a diagnosis function to the system-on-chip 10 of the tested end 12.
The system on chip 10 is configured with a fault monitoring module 7, a diagnostic event management module 8 and a virtual interface, the microcontroller 11 is configured with a diagnostic communication module 5 and a storage module 9, when the fault monitoring module 7 detects that the system on chip 10 generates a fault event, the diagnostic event management module 8 obtains fault event information detected by the fault monitoring module 7 and generates a fault code, and the fault code is stored in the storage module 9 in the microcontroller 11 through the virtual interface.
The diagnostic end 1 is configured with a diagnostic strategy configured with the following diagnostic steps:
a connection step: the diagnosis end 1 is connected to the Ethernet interface through the diagnosis interface to connect with the system-on-chip 10 of the tested end 12;
an activation step: the diagnosis terminal 1 activates the diagnosis communication module 5 in the microcontroller 11 through the user data protocol message, and initiates a diagnosis request to the tested terminal 12;
a diagnosis service step: when the diagnostic event management module 8 in the system on chip 10 receives the diagnostic request message, forwarding the diagnostic request to the diagnostic communication module 5 in the microcontroller 11;
a fault reading step: the diagnosis communication module 5 accesses and reads the fault information in the storage module 9 and sends the fault information to the diagnosis terminal 1 through the ethernet interface of the system on chip 10.
The system on chip 10 is configured with an identity authentication module 6, the identity authentication module 6 is configured with a counting unit, when the diagnosis terminal 1 is connected with the system on chip 10, the diagnosis terminal 1 sends an identity authentication identification code to the system on chip 10, the identity authentication module 6 verifies the identity authentication identification code and generates an authentication result, and when the authentication result is authentication pass, the system on chip 10 sends a diagnosis request to the microcontroller 11 for processing. In a time period, every time the identity authentication identification code is input, the counting module automatically adds one, and when the accumulated count of the counting unit reaches a preset number, the system-on-chip 10 of the tested terminal 12 is locked.
The diagnosis terminal 1 is configured with a fault information acquisition module 4, a fault judgment module 3 and a fault processing module 2, the fault information acquisition module 4 is used for acquiring fault codes stored in a storage module 9, acquiring fault information of at least one fault according to the fault codes and sending the fault information to the fault judgment module, and the fault judgment module judges the position and the fault type of the fault according to information transmitted by the information acquisition module.
The fault types comprise power system faults, vehicle body system faults and network transmission system faults, and the power system faults comprise battery pack capacity reduction, overhigh charging voltage, low discharging voltage, large self-discharging, local high temperature, battery arcing breakdown and single battery damage; the faults of the vehicle body system comprise cold vehicle shaking of the engine, hot vehicle shaking of the engine, abnormal sound of the engine, carbon deposition of the engine, engine oil leakage of the engine and high water temperature of the engine; the network transmission system faults comprise automobile power system abnormity, automobile multi-channel information transmission system abnormity and node faults of information transmission units.
The fault processing module 2 comprises an early warning prompting unit and an action executing unit, wherein the early warning prompting unit is used for carrying out fault indication according to fault information and reminding maintenance personnel to check and process. When the fault information acquired by the fault information acquisition module 4 is diagnosed as a power system fault by the fault judgment module, the action execution unit executes the action of disconnecting the charging connector; when the fault information acquired by the fault information acquisition module 4 is diagnosed as an engine fault by the fault judgment module, the action execution unit executes an engine flameout action; when the fault information acquired by the fault information acquisition module 4 is diagnosed as a vehicle-mounted network fault by the fault judgment module, the action execution unit executes the power-off action of the automobile power system.
As shown in fig. 2, the system is powered on, the diagnostic terminal 1 is connected to the ethernet interface through the diagnostic interface to connect to the system-on-chip 10 of the tested terminal 12, the diagnostic terminal 1 sends an identity authentication identification code to the system-on-chip 10, the identity authentication module 6 verifies the identity authentication identification code and generates an authentication result, and when the authentication result is that the authentication is passed, the diagnostic terminal 1 and the tested terminal 12 are successfully connected.
The diagnostic terminal 1 activates the diagnostic communication module 5 in the microcontroller 11 through the user data protocol message, and initiates a diagnostic request to the tested terminal 12, when the diagnostic event management module 8 in the system-on-chip 10 receives the diagnostic request message, the diagnostic request is forwarded to the diagnostic communication module 5 in the microcontroller 11, and the diagnostic communication module 5 accesses and reads the fault information of the system-on-chip 10 pre-stored in the storage module 9, and sends the fault information to the diagnostic terminal 1 through the ethernet interface of the system-on-chip 10.
When the fault information acquired by the fault information acquisition module 4 of the diagnosis end 1 is diagnosed as a power system fault by the fault judgment module, the action execution unit executes the action of disconnecting the charging connector; when the fault information acquired by the fault information acquisition module 4 is diagnosed as an engine fault by the fault judgment module, the action execution unit executes an engine flameout action; when the fault information acquired by the fault information acquisition module 4 is diagnosed as a vehicle-mounted network fault by the fault judgment module, the action execution unit executes the power-off action of the automobile power system.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. A DoIP diagnostic system of a heterogeneous platform is characterized in that: the system comprises a tested end and a diagnosis end, wherein the tested end comprises a system on chip and a microcontroller, the diagnosis end is provided with a diagnosis interface, the tested end is provided with an Ethernet interface, and the diagnosis end is connected to the Ethernet interface through the diagnosis interface so as to be connected with the system on chip of the tested end and used for sending fault request data corresponding to a diagnosis function to the system on chip of the tested end;
the system on chip is configured with a fault monitoring module and a diagnosis event management module, the microcontroller is configured with a diagnosis communication module and a storage module, and when the fault monitoring module detects that the system on chip generates a fault event, the diagnosis event management module generates a fault code according to the fault event and stores the fault code into the storage module in the microcontroller;
the diagnosis end is provided with a diagnosis strategy, and the diagnosis strategy is provided with the following diagnosis steps:
a connection step: the diagnosis end is connected to the Ethernet interface through the diagnosis interface so as to be connected with the system on chip of the tested end;
an activation step: the diagnosis end activates a diagnosis communication module in the microcontroller through the user data protocol message and initiates a diagnosis request to the tested end;
a diagnosis service step: when a diagnosis event management module in the system on chip receives a diagnosis request message, the diagnosis event management module forwards the diagnosis request to a diagnosis communication module in the microcontroller;
a fault reading step: the diagnosis communication module accesses and reads the fault information in the storage module and sends the fault information to the diagnosis end through an Ethernet interface of the system on chip.
2. The DoIP diagnostic system of a heterogeneous platform according to claim 1, wherein: the system on chip is provided with an identity authentication module, when the diagnosis end is connected with the system on chip, the diagnosis end sends an identity authentication identification code to the system on chip, the identity authentication module verifies the identity authentication identification code and generates an authentication result, and when the authentication result is that the authentication is passed, the system on chip sends a diagnosis request to the microcontroller for processing.
3. The DoIP diagnostic system of a heterogeneous platform according to claim 2, wherein: the identity authentication module comprises a counting unit, and when the identity authentication identification code is input once in a time period, the counting module automatically adds one, and when the accumulated count of the counting unit reaches the preset number, the system on chip of the tested end is locked.
4. The DoIP diagnostic system of a heterogeneous platform according to claim 1, wherein: the system on chip is configured with a virtual interface, and when the fault monitoring module detects a fault event in the system on chip, the diagnostic event management module acquires fault event information detected by the fault monitoring module, sends the fault event information through the virtual interface and stores the fault event information in the storage module.
5. The DoIP diagnostic system of a heterogeneous platform according to claim 1, wherein: the diagnosis end is provided with a fault information acquisition module and a fault judgment module, the fault information acquisition module is used for acquiring fault codes stored in the storage module, acquiring fault information of at least one fault according to the fault codes and sending the fault information to the fault judgment module, and the fault judgment module judges the position and the type of the fault according to the information transmitted by the information acquisition module.
6. The DoIP diagnostic system of a heterogeneous platform of claim 5, wherein: the fault types comprise power system faults, vehicle body system faults and network transmission system faults, and the power system faults comprise battery pack capacity reduction, overhigh charging voltage, low discharging voltage, large self-discharging, local high temperature, battery arcing breakdown and single battery damage; the vehicle body system faults comprise engine cold vehicle shaking, engine hot vehicle shaking, engine abnormal sound, engine carbon deposition, engine oil leakage and high engine water temperature; the network transmission system faults comprise automobile power system abnormity, automobile multi-channel information transmission system abnormity and node faults of information transmission units.
7. The DoIP diagnostic system of a heterogeneous platform of claim 5, wherein: the diagnosis end is also provided with a fault processing module, the fault processing module comprises an early warning prompting unit and an action execution unit, and the early warning prompting unit is used for indicating faults according to fault information and reminding maintenance personnel to check and process the faults.
8. The DoIP diagnostic system of a heterogeneous platform of claim 7, wherein: when the fault information acquired by the fault information acquisition module is diagnosed as a power system fault by the fault judgment module, the action execution unit executes the action of disconnecting the charging connector; when the fault information acquired by the fault information acquisition module is diagnosed as an engine fault by the fault judgment module, the action execution unit executes an engine flameout action; when the fault information acquired by the fault information acquisition module is diagnosed as a vehicle-mounted network fault by the fault judgment module, the action execution unit executes the power-off action of the automobile power system.
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