A gateway control method for real-time monitoring of vehicle network dormancy status

Abstract

The invention discloses a gateway control method for real-time monitoring of the sleep state of the vehicle network. The gateway connected to multiple CAN network segments monitors in real time whether the sleep flag bits of the gateway and all controllers in each CAN network segment are set; bit, the gateway will continue to delay for a period of time after the normal waiting time. During the delay time, the gateway will close the function of sending messages, retain the function of receiving messages, and judge whether it has received the message sent by the controller in the CAN network segment. message; if received, the gateway saves the information of the controller that sent the message; if not received, the gateway sends a heartbeat message to the CAN network segment of the road, and detects whether the controller in the CAN network segment of the road responds; If a response is received, the gateway saves the information of the responding controller; if no response is received, it indicates that the network segment has entered a normal sleep state. The invention utilizes the gateway to monitor the controller message on each network segment, and uses the heartbeat message as redundancy, which is beneficial to quickly find and deal with the cause of abnormal dormancy.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and in particular relates to a gateway control method for real-time monitoring of the dormancy status of a vehicle network. Background technique [0002] The car battery plays an important role in supplying power to the on-board electrical equipment and providing starting current when the engine is started. The normal sleep of the car is the basic function of the car network management, and it is also the prerequisite to ensure the safe start of the car. Due to the limited capacity of the battery, when the car cannot sleep normally for a long time due to abnormal reasons after the car is powered off, it is easy to cause the battery to run out, which will cause the car to fail to start normally, and the reason for the abnormal sleep is not easy to locate. For users and car research and development The staff caused a lot of inconvenience. Existing car dormancy strategies rarely monitor the ve...

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is to provide a gateway control method for real-time monitoring of the dormancy status of the vehicle network, to solve the problem that the abnormal dormancy of the vehicle network causes the car to fail to start normally and the cause of the abnormal dormancy is difficult to locate

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