Method of monitoring used volume of electronic control unit for automobile

Abstract

Disclosed are a method of monitoring a used volume of an electronic control unit (ECU) for an automobile. The method comprises: a) a step of recording the point of time of used volume, which is to record the time information of the point of time of each of execution and ending of a task and an ISR, and record the moment when the maximum used volume of the CPU is renewed through a function of measuring the time of execution of each of the task and the ISR; b) a step of storing detection data, which is to acquire the information of the maximum used volume of the CPU, the RPM of the engine, software operation mode, malfunction code, number of times of execution of the task, and response time of the task, and store the information in a non-volatile memory; and c) a step of transmitting accumulated information, which is to store the records on the time before the moment when the maximum used volume of the CPU is renewed in the order of time, and transmit the relevant information to an external communication to allow the relevant information to be checked on a PC in the order of time. According to the present invention, the method of monitoring the used volume of the ECU of the automobile, which can monitor the used volume of the CPU mounted in the ECU of the automobile and realize the optimal operation status, can be provided.

Description

technical field [0001] The present invention relates to a method and a monitoring unit for monitoring the amount of usage of an electronic control device of a vehicle. More specifically, it relates to a method for realizing optimal A method and a monitoring unit for monitoring the usage amount of an electronic control device of a vehicle. Background technique [0002] Various electronic control units (Electronic Control Units: ECU) in vehicles are usually designed to have one central processing unit (CPU, Central Processing Unit), but in order to improve their operational performance, they are also designed to have two CPUs. In other words, one motherboard is mounted with two CPUs, and the two CPUs are connected through a bus line so that the two CPUs can communicate with each other. [0003] The number of such CPUs to be mounted is determined according to the request of the ECU designer, but depending on the situation, even if there is no request from the ECU designer, it ...

AI Technical Summary

Problems solved by technology

[0005] In addition, according to the prior art, when the usage of the central processing unit (CPU, Central Processing Unit) mounted in the electronic control unit (ECU, Electronic Control Unit) of the vehicle increases excessively, the time required for calculation is insufficient, which may cause abnormal operation

[0006] According to the prior art, the technology related to the measurement of the usage of the central processing unit (CPU) has been developed, but there is no method to analyze the cause of the sudden increase in the usage of the central processing unit (CPU) or to solve the cause.

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