Learning proximity detector
US6594615B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Sep 18, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/945
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A self-adaptable proximity detector delivering a binary output signal for the presence or absence of a target. The proximity detector includes a processing unit and operates according to a short learning mode for an adjustment relative to its environment, according to a long learning mode for an adjustment relative to its environment and to a target, and according to a working mode corresponding to normal operation. The proximity detector also includes a variable digital storage resistor driven by the processing unit in the learning mode and connected to the detection stage so that variation of the value of the digital resistor causes a variation of the switching threshold. In the working mode, the processing unit is in a standby state and the variable digital storage resistor remains at its set operating value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.