Patent Number: 6,253,133

Title: Sitting state detector

Abstract: A sitting state detector of the present invention has an electrode which is installed in a seat back and which has a capacitance fluctuating depending on whether or not a passenger sits in a normal posture, conversion means for generating an electric signal corresponding to the capacitance, means which detects predetermined changes in the electric signal and which generates a detection signal indicative of whether or not the passenger sits in the normal posture, a sitting state sensor for a seat cushion, and control means which adjusts the conversion means for standardizing the electric signal at intervals of a short period and by a great amount in the absence of a sitting passenger and which adjusts the conversion means at intervals of a long period and by a small amount in the presence of a sitting passenger.

Inventors: Sakai; Morio (Toyota, JP), Ito; Koji (Aichi-ken, JP), Fujimoto; Osamu (Nisshin, JP), Hamada; Makoto (Toyota, JP)

Assignee: Aisin Seiki Kabushiki Kaisha

International Classification: B60R 21/01 (20060101); B60R 021/00 ()

Expiration Date: 06/26/2018