Capacitive occupant sensing apparatus
US8754661B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 7, 2011 |
| Grant date | Jun 17, 2014 |
| Priority date | — |
| Expiry date | Jan 20, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2210/12
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A control circuit identifies whether an occupant on a seat is an adult or a child based on a first capacitance between a first sensing electrode and a ground and a second capacitance between a second sensing electrode and the ground. The first capacitance is computed based on a value of an electric current, which is supplied to the first sensing electrode at the time of applying an oscillation signal from a signal application circuit to the first sensing electrode. The second capacitance is computed based on a value of an electric current, which is supplied to the second sensing electrode at the time of applying an oscillation signal from the signal application circuit to the second sensing electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.