Passenger detection system and method
US6329913A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1999 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Oct 6, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R21/01532
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A passenger detection system is provided. The passenger detection system utilizes an oscillation circuit that causes an antenna electrode to emit an electric field that is disrupted by the electrical characteristics of an object placed on the seat. This disruption alters the current and phase of the signal in the antenna electrode. By comparing the current flowing in the antenna electrode and/or the difference between the phase of the signal in the antenna electrode and the oscillation circuit output signal with predetermined threshold values, it is possible to detect the presence of a passenger in a reliable and inexpensive manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.