초록 ▼

A data field of a data frame which is sent from a HEV_ECU to a motor A controller and a motor B controller includes control data of 5 bytes and a number-of-sending-times counter of one byte, which is located following the control data. The contents of the number-of-sending-times counter is increment

A data field of a data frame which is sent from a HEV_ECU to a motor A controller and a motor B controller includes control data of 5 bytes and a number-of-sending-times counter of one byte, which is located following the control data. The contents of the number-of-sending-times counter is incremented (decremented) every time data is sent to the motor A controller and the motor B controller. A T/M_ECU constantly monitors the contents of the number-of-sending-times counter. When a count value of the number-of-sending-times counter is not normally incremented (decremented) consecutively two times, the T/M_ECU decides that the HEV_ECU is abnormal, and informs other ECUs that the HEV_ECU is abnormal.

대표청구항 ▼

[ What is claimed is:] [1.]1. An abnormality monitoring device for a vehicle control system, comprising:a plurality of control units of which objects to be controlled are different from one another;a multiplex communication line interconnecting said control units;transmitting means provided in one s

[ What is claimed is:] [1.]1. An abnormality monitoring device for a vehicle control system, comprising:a plurality of control units of which objects to be controlled are different from one another;a multiplex communication line interconnecting said control units;transmitting means provided in one specific control unit within said vehicle control system, said transmitting means for inserting a count value indicative of the number of sending times, which is independent of control data, into communication data; and transmitting the resultant communication data; andjudging means provided in an other control unit within said vehicle control system, said judging means for monitoring said count value of said communication data transmitted from said specific control unit, and judging that said specific control unit is abnormal, when said count value is not consecutively updated.