Electronic control unit

An electronic control unit (1) includes a main CPU (11) and a sub-CPU (12), and the main CPU (11) calculates a computation value at an MTESTn computing unit (32) by using a test value acquired at an MTEST acquiring unit (31). The computation value is then transmitted to the sub-CPU (12). The sub-CPU...

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Bibliographische Detailangaben
Hauptverfasser:	Aoyagi, Tadashi, Akimoto, Yutaka, Watanabe, Hideki, Kikegawa, Yu
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CALCULATING COMPUTING CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING COUNTING ELECTRIC DIGITAL DATA PROCESSING FUNCTIONAL ELEMENTS OF SUCH SYSTEMS MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS REGULATING
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Beschreibung
Zusammenfassung:	An electronic control unit (1) includes a main CPU (11) and a sub-CPU (12), and the main CPU (11) calculates a computation value at an MTESTn computing unit (32) by using a test value acquired at an MTEST acquiring unit (31). The computation value is then transmitted to the sub-CPU (12). The sub-CPU (12) recovers the test value from the computation value at a sub-comparing unit (43). The sub-CPU (12) acquires a test value in the same manner as the main CPU (11), and determines that the main CPU (11) is in a normal operation state if the recovered test value and the test value acquired by the sub-CPU (12) itself match each other.