Aisin Seiki Kabushiki Kaisha

Hiromichi Yasunori

Morio Sakai

Masaki Mori

Osamu Fujimoto

Koji Aoki

Kazunori Sakamoto

Chiaki Sumi

Isao Hagiwara

Power is supplied to an ECU () from an on-vehicle battery (). When an ignition switch () is switched from the OFF state to the ON state upon vehicle engine start, the ECU () is switched from the power saving mode to the normal mode and a CPU () executes initial processing. Moreover, when a user puts on a seat belt and a seat belt switch () is switched from the ON state to the OFF state, the ECU () is switched from the power saving mode to the normal mode and the CPU () executes the initial processing. Thus, the initial processing is executed at a comparatively short interval and it is possible to improve the reliability of the CPU ().

Vehicle electronic control unit

An information request portion receives an information request signal transmitted to an information response portion at its own receiving port. The information request portion comprises at least either of a power supply system anomaly determination portion or a ground anomaly determination portion. The power supply system anomaly determination portion determines a short-circuit between a signal line and a power supply system in a case where the information request signal received at the receiving port is always fixed to a H (high) level. The ground anomaly determination portion determines a short-circuit between a signal line and a ground in a case where the information request signal received at the receiving port is always fixed to a L (Low) level. Consequently, the anomaly region of the signal line connecting the information request portion and the information response portion in such a manner that bidirectional digital communications are possible or the cause of the anomaly is specified.

Communication anomaly detecting device, and passenger detecting device

A vehicle seat having a load sensor arranged on a seat body for generating a load signal corresponding to a load applied to the seat body, a detecting means for detecting whether a seat belt is buckled to the vehicle seat and generating a detection signal, and a determining means for comparing the load signal and a predetermined value in response to the detection signal when the seat belt is buckled and judging that an adult is not seated on the seat body when the load signal is less than the predetermined value. The seated condition of the vehicle seat is detected properly by the determination result of the determining means.

Vehicle seat

Growing community of inventors

Nagoya, Japan

Hiromichi Yasunori