Whole vehicle feed problem monitoring method and system and vehicle CAN network gateway

Abstract

The invention provides a whole vehicle feed problem monitoring method, which comprises the following steps of: when a gateway determines that a whole vehicle feed mode when an ignition switch is in anOFF gear is that a vehicle is in a bus communication state for a long time but cannot enter a low power consumption state, distinguishing messages sent by each CAN according to the network managementprotocol type of the CAN, and sending messages sent by each CAN from all nodes of the CAN; obtaining a node of which the message is received by the gateway within a preset monitoring time and accordswith a bus abnormal communication condition, generating first abnormal information, and sending the first abnormal information to the vehicle-mounted T-BOX; and when the gateway determines that the whole vehicle feeding mode when the ignition switch is in the OFF gear is that the vehicle cannot be stably kept in a low-power-consumption state and is in a continuous dormancy awakening state, inquiring nodes meeting the abnormal awakening condition from all the nodes of the CAN network, and generating and sending second abnormal information to the vehicle-mounted T-BOX. By implementing the method, the fault information can be collected in time when the whole vehicle feed problem occurs, the working time and the working complexity are shortened for checking the whole vehicle feed problem, andthe working efficiency is improved.

Description

Technical field [0001] The present invention relates to the field of automotive CAN network bus technology, in particular to a vehicle feeding problem monitoring method, system and automobile CAN network gateway. Background technique [0002] With the development of automotive electronics technology, the in-vehicle electronic electrical components are increasing, and each ECU has a network through the CAN bus. The vehicle is based on many ways such as different device performance, safety and bus load rate, which will be designed with multiple CAN networks on a car to form a relatively complex network topology. Data is performed by the gateway between each CAN network. Interact. At the same time, the car T-Box connection gateway and external wireless network, with multiple functions such as positioning, anti-theft alarm, remote monitoring, providing great help to customers safe driving. [0003] Due to the increase in the electronic electrical components, the steps of the car CAN ...

AI Technical Summary

Problems solved by technology

[0003] Due to the increase of electronic and electrical components, the complexity of the automotive CAN network has increased, resulting in more and more complicated steps for the vehicle to enter the low power consumption state. Therefore, it often takes a lot of manpower and material resources to improve, resulting in The risk of problems arising is greatly increased

[0004] At present, the problem of vehicle power feeding is caused by many reasons, but the fault that meets the abnormal communication conditions of the bus is often the most common problem

However, in the prior art, when diagnosing the power feeding problem of the whole vehicle, the product engineer needs to carry bus equipment such as CANOE to connect to the OBD (On Board Diagnostics, on-board automatic diagnosis system) port, constantly try to perform different operations, and need to observe Bus status, record and analyze data, which greatly improves the time and complicated work for product engineers to troubleshoot vehicle feed problems, and reduces work efficiency

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