Vehicle-mounted entertainment system restart fault diagnosis method and system

Abstract

According to the vehicle-mounted entertainment system restart fault diagnosis method and system provided by the invention, the reasons of MPU restart are recorded through the MCU, the reasons are automatically packaged and uploaded to the log server at the rear end through the Android system, and the functions of automatically storing logs in corresponding directories, automatically classifying problems and the like are achieved according to the information of uniquely identifying the vehicle; and the efficiency and the accuracy of fault diagnosis are improved. According to the invention, through providing a set of complete fault positioning system, various problems encountered in the actual operation process of the vehicle, especially problems which are not easy to reproduce, are quickly and efficiently positioned, the analysis efficiency is greatly improved, the problem leaving risk is reduced, and the user experience is improved. Developers can check logs of related time points in corresponding directories, and the developers can conveniently and visually know fault types of vehicles and analyze problems.

Description

technical field [0001] The invention belongs to the technical field of fault diagnosis, and in particular relates to a restart fault diagnosis method and system for a vehicle entertainment system. Background technique [0002] In-Vehicle Infotainment (IVI for short) is an in-vehicle integrated information processing system formed by using a vehicle-specific central processing unit based on a body bus system and Internet services. IVI can realize a series of applications including 3D navigation, real-time road conditions, IPTV, assisted driving, fault detection, vehicle information, body control, mobile office, wireless communication, online entertainment functions and TSP services, which greatly improves vehicle electronics. level of automation, networking and intelligence. [0003] The existing in-vehicle infotainment system is mainly developed based on the Android system. The dedicated microprocessor (Microprocessor Unit, MPU) in the vehicle is responsible for the operati...

AI Technical Summary

Problems solved by technology

If the Android system executes abnormally and restarts, you can record the log to the log partition of emmc, and export the log from the system after restarting to help analyze the restart problem. However, there is another scenario where the system is powered off. At this time, the logservice It is too late to write the log to the log partition of Emmc. At this time, after the restart, the effective log information recording the reason for the restart cannot be seen, which makes it impossible to analyze the reason for the restart.

[0005] When the hardware carrier MPU of the Android system is abnormally powered off, the logservice cannot write the log to the log partition of the emmc in time, resulting in the failure to analyze the specific cause of the problem after restarting. If the probability of the problem is low, it will increase the time for problem analysis. time and labor costs

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