AUTOMOTIVE ELECTRONIC CONTROLLER

• Main Authors: ABE YUSUKE, ARAI TOSHINAKA, YUASA KOJI
• Format: Patent
• Language: English; Japanese
• Published: 02.02.2015
• Subjects: BLASTING; CALCULATING; COMBUSTION ENGINES; COMPUTING; CONTROLLING COMBUSTION ENGINES; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; PHYSICS; WEAPONS

PROBLEM TO BE SOLVED: To improve the safety of automotive control by improving the reliability of important arithmetic processing such as diagnostic processing in an automotive electronic controller.SOLUTION: The memory areas of ROM and RAM are separated into a normal control area for a control program (i.e., a normal arithmetic area) and a high safety area for a diagnostic program (i.e., an important arithmetic area). Then, a high safety area diagnostic program for performing memory diagnosis of the high safety area and a normal diagnostic program for performing memory diagnosis of the entire area are installed in the high safety area, thus the high safety area being subjected to double memory diagnosis. 【課題】自動車用電子制御装置において診断処理などの重要演算処理の信頼性を向上させ、自動車制御の安全性を向上させる。【解決手段】ＲＯＭ及びＲＡＭのメモリ領域を制御プログラム用の通常制御領域（通常演算領域）と診断プログラム用のハイセーフティ領域（重要演算領域）とに切り分ける。そして、ハイセーフティ領域に、ハイセーフティ領域のメモリ診断を行うハイセーフティ領域用診断プログラム及び全領域のメモリ診断を行う通常診断用プログラムを実装し、ハイセーフティ領域は２重にメモリ診断を行わせる。【選択図】図３