A method, system and gateway for automobile software refresh control

Abstract

The invention provides an automobile software refreshing control method and system, and an automobile software refreshing gateway. The control method comprises steps of S1, a gateway forwards a refreshing message sent by a refreshing device to a target electronic control unit; S2, when the target electronic control unit determines the refreshing message is the first frame, the gateway receives a flow control frame carrying the receivable minimal successive frame interval and the number of successive frames received at one time sent by the target electronic control unit; S3, when the gateway determines that the minimal successive frame interval received by the target electronic control unit is smaller than a set threshold, the minimal successive frame interval received by the target electronic control unit is modified into the set threshold and the modified minimal successive frame interval is forwarded to the refreshing device; and S4, the gateway receives successive frames sent by the refreshing device at the set threshold and forwards the successive frames to the target electronic control unit. The parameter of the flow control frame is modified by the gateway, and the bus load rate is reduced.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an automobile software refresh control method, system and gateway. Background technique [0002] In the automotive field, especially during the vehicle development phase, software updates are often required to fix bugs or upgrade software. For real vehicle refresh, because one CAN channel is connected to multiple electronic control units (ECUs), all ECUs send messages on the bus, which will occupy a certain load rate and have a certain impact on the refresh; when the load rate is high , because the refresh packet ID priority rate is not high, it will cause the refresh packet delay or even frame loss, resulting in refresh failure. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an automobile software refresh control method, system and gateway to reduce the bus load rate and improve the success rate of refresh. ...

AI Technical Summary

Problems solved by technology

For real vehicle refresh, because one CAN channel is connected to multiple electronic control units (ECUs), all ECUs send messages on the bus, which will occupy a certain load rate and have a certain impact on the refresh; when the load rate is high , because the refresh packet ID priority rate is not high, it will cause the refresh packet delay or even frame loss, resulting in refresh failure

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