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Electronic controller program flow monitoring system and method

A technology of electronic controller and monitoring system, which is applied in general control system, control/regulation system, test/monitoring control system, etc., can solve the problem of high development cost of intelligent watchdog chip, and achieve saving of development cost and hardware cost, The effect of simplifying functional requirements and meeting functional requirements

Pending Publication Date: 2020-04-24
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an electronic controller program flow monitoring system and method to solve the problem of high development cost of the existing intelligent watchdog chip

Method used

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  • Electronic controller program flow monitoring system and method
  • Electronic controller program flow monitoring system and method
  • Electronic controller program flow monitoring system and method

Examples

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Embodiment 1

[0038] This embodiment provides an electronic controller program flow monitoring system, such as figure 2 As shown, the electronic controller program flow monitoring system includes an internal watchdog module 10, an external watchdog module 20, an external watchdog answer generation module 21 and a program flow monitoring module 30, wherein: the internal watchdog Module 10 generates a question, and sends the question to the program flow monitoring module 30; the program flow monitoring module 30 generates a program flow monitoring answer according to the question, and sends the program flow monitoring answer to the Internal watchdog module 10 and described external watchdog answer generating module 21; Described internal watchdog module 10 checks whether described program flow monitoring answer is wrong, if so, then close electronic controller; Described internal watchdog The module 10 sends a preset value to the external watchdog answer generating module 21; the external wa...

Embodiment 2

[0043] This embodiment also provides a method for monitoring program flow of an electronic controller. The method for monitoring program flow of an electronic controller includes: the internal watchdog module 10 generates a question, and sends the question to the program flow monitoring module 30; The program flow monitoring module 30 generates a program flow monitoring answer according to the question, and sends the program flow monitoring answer to the internal watchdog module 10 and the external watchdog answer generation module 21; the internal watchdog Module 10 checks whether the program flow monitoring answer is wrong, and if so, closes the electronic controller; the internal watchdog module 10 sends a preset value to the external watchdog answer generation module 21; the external watchdog Dog answer generation module 21 generates the answer of external watchdog according to said preset value and said program flow monitoring answer, and said external watchdog answer is s...

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Abstract

The invention provides an electronic controller program flow monitoring system and method. The system comprises an internal watchdog module, an external watchdog module, an external watchdog answer generation module and a program flow monitoring module. The internal watchdog module generates a question; the program flow monitoring module generates a program flow monitoring answer according to thequestion and sends the program flow monitoring answer to the internal watchdog module and the external watchdog answer generation module; the internal watchdog module checks whether the program flow monitoring answer is wrong or not, and if so, the electronic controller is turned off; the internal watchdog module sends a preset value to the external watchdog answer generation module; the externalwatchdog answer generation module generates an answer of an external watchdog according to a preset value and the program flow monitoring answer, and sends the answer of the external watchdog to the external watchdog module; and the external watchdog module checks whether the program flow monitoring answer and the preset value have errors according to the external watchdog answer; and if so, the electronic controller is turned off.

Description

technical field [0001] The invention relates to the technical field of automobile controllers, in particular to an electronic controller program flow monitoring system and method. Background technique [0002] With the increase in the complexity of automotive systems, the application of software and electromechanical equipment, the risks from system failures and random hardware failures are also increasing. Safety will be the key to automotive electronic controllers (such as engine controllers, motor drive controllers, vehicle control Devices, etc.) are increasingly important indicators in research and development. Based on this need, the first edition of the international standard ISO26262 for automotive functional safety was officially promulgated in November 2011, and the second edition is expected to be implemented in 2018. The standard stipulates that the hardware involved in functional safety needs to be diagnosed to ensure that faults are detected and error responses...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/0213Y02P90/02
Inventor 黄文卿郑海涛姜海龙宋俊峰闫岩
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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