Aisin Seiki Kabushiki Kaisha

Toyota Jidosha Kabushiki Kaisha

Isao Hagiwara

Morio Sakai

Toshihiro Kobayashi

Muneto Inayoshi

Masaki Mori

Chiaki Sumi

Yosuke Kubota

Ken Okumura

Kentaro Morishita

Hiromichi Yasunori

Katsuyoshi Mizumoto

Koki Terashima

There is provided an occupant detection correction system including: a load detection section that detects load imparted to a vehicle seat and outputs a load signal representing the load; an occupant detection section that detects an occupant based on the load signal and is capable of resetting the load signal to a reference point based on a predetermined reset instruction; a tilt angle detection section that detects a predetermined tilt angle of a seatback; and a permitting section that permits execution of resetting the load signal to the reference point by the occupant detection section when the predetermined tilt angle is detected by the tilt angle detection section.

Occupant detection correction system

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

An angular rate detector is disclosed having a first and a second detecting electrode 6a, 7a, which detect a second oscillation produced by Coriolis force, and disposed at locations which are symmetrical with respect to a direction of excitation D2 of a piezoelectric oscillator 2 and which corresponds to nodes of a first oscillation produced by the excitation. When the piezoelectric oscillator 2 rotates in a certain direction, a first signal appearing at the first detecting electrode 6a will be lagging in phase while a second signal appearing at the second detecting electrode 7a will be leading in phase. An electrical circuit produces an angular rate signal which represents a phase difference between the first and the second signal. In order to achieve a level of the first and the second signal which can be sensed by the electrical circuit it the angular rate is equal to zero, in a first embodiment, the first and the second detecting electrode 6a, 7a are disposed so as to be offset from nodes of the first oscillation of the oscillator 2 by an amount .crclbar. toward the direction of the first oscillation D2. In a second embodiment, impedances of electrical circuits of the vibration system D2 and the detection system D3, D4 are chosen so that the resonant frequencies of the first and the second oscillation are different relative to each other. In a third embodiment, a weight is added to or a notch is formed in the oscillator to achieve a relative offset between the resonant frequencies of the first and the second oscillation.

Angular rate detector

Growing community of inventors

Nagoya, Japan

Isao Hagiwara