Method of detecting an object with a proximity sensor
US9689657B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2011 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Aug 30, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/960705
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The disclosure relates to a method of detecting an object using a detection signal supplied by a proximity sensor. The method comprises the steps of generating a reference signal by filtering the value of the detection signal, defining a first detection threshold, and going from an object non-detecting state to an object detecting state when the value of the detection signal becomes greater than the first detection threshold. When the value of the detection signal becomes greater than the first detection threshold, the value of the reference signal is readjusted in a manner such that the value of the detection signal again becomes less than or respectively greater than, the first detection threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.