Platform-based gateway routing method for automobile flash diagnosis

Abstract

The invention relates to a platform-based gateway routing method for automobile flashing diagnosis. The method comprises the following steps of: connecting PCAN, BCAN, CCAN and TCAN network segments of four paths of CAN (Controller Area Network) of a whole automobile to a GW (Gateway), and routing flashing data to the CCAN or TCAN of a target network segment for a controller to be flashed under the condition of non-PCAN and BCAN flashing diagnosis; meanwhile, the flashing ECU responds to the data synchronization route and returns to the original network segment PCAN or BCAN; the diagnosis equipment comprises an after-sales diagnosis instrument and off-line EOL equipment; for a flashing controller on a non-TCAN, data is routed to a corresponding CAN network segment for flashing, and meanwhile, a flashing ECU (Electronic Control Unit) responds to the data and is synchronously routed back to the TCAN; and when the whole vehicle has two types of flashing diagnosis at the same time, if the flashing diagnosis of the diagnosis equipment is higher than the remote flashing diagnosis principle, the flashing diagnosis of the diagnosis equipment is directly switched to. According to the method, the problem that diagnosis routing is disordered in vehicle end flashing diagnosis is effectively solved, and the problem of flashing failure caused by OTA flashing diagnosis interference in the off-line EOL flashing and after-sales diagnosis equipment flashing processes can be avoided.

Description

technical field

[0001] The invention relates to a vehicle remote diagnosis technology, in particular to a gateway routing strategy compatible with both remote OTA flashing and diagnostic device flashing. Background technique

[0002] With the rapid development of the new four modernizations of automobiles, automotive electronics technology is undergoing rapid changes. With the emergence of OTA technology, the technical research of automotive remote diagnosis has risen to a new level. Remote diagnosis is no longer limited to reading fault codes. , clear fault codes, read basic information and other functions. The emergence of OTA technology provides a new source of power for vehicle after-sales maintenance. The principle of OTA technology is still a flashing diagnostic technology developed based on the UDS principle. OTA remote flashing is based on the flashing diagnostic command issued by the TBOX controller. Since the physical ID address used by the TBOX self-flashing diag...

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