Body sensing device
US5760688A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 24, 1996 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | May 24, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/9547
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved body sensing device capable of precisely sensing a living body at a standstill by discriminating the living body from other substances than the living body. An oscillator provided with a detection coil oscillates a high frequency signal. As there is no object or exists baggage or the like near the detection coil, the oscillator oscillates and generates a high frequency signal at a high level to be detected by a detector for turning on a transistor of a controller. As there exists a human body near the oscillator, the oscillation stops and the input signal from the detector to the transistor is extremely lowered, so that the transistor is turned off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.