Field equipment photoelectric sensing sensitivity adjustment
US8970124B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2010 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | May 23, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/94031
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A photoelectric sensing sensitivity adjusting device includes: an LED for emitting light by being supplied with energy (current or voltage); a regulator for LED driving for supplying the energy to the LED; a light receiving device for receiving the light emitted from the LED; a digital potentiometer for controlling increase or decrease of the energy to be supplied to the LED; a CPU for digitally controlling, according to a control program, the increase or decrease of the energy to be supplied to the LED; and a photodetection portion for detecting an optical signal, converting the optical signal to an electrical signal, and outputting the electrical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.