Sitting state detector
US6253133A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 12, 2000 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | May 12, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R21/01532
- WIPO fieldTransport
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.