Device and method for communication between an electronic module and a detection sensor comprising a light source
US9295125B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 12, 2013 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Feb 4, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2203/5454
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Method for communication between an electronic module and a sensor having a first branch, including a light source LED and a first switch, and a second branch including a second switch, supplied by a supply line, the module measuring modulations of intensity of current of the line. When the light source is turned on or in the process of turning on/turning off, the sensor causes i) modulation of the intensity of the current in the LED between a high state and a low state, ii) modulation of the intensity of the current in the second branch so that the intensity of the current is always in a higher state, and, in case of detection, iii) dispatches to the electronic module a modulation of the intensity of current in the second branch, when the intensity of current in the LED is in the low state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.