Monitored transmitter and receiver system and method for safety devices
US7123144B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2004 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | May 1, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2600/46
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An automatic door opening system utilizing wireless links to communicate from hazard or obstruction sensors to a controller to react to such conditions. The present invention allows the use of hazard, fault or obstruction switching devices which themselves utilize internal continuity monitoring in a wireless environment. Compressible hazard switch sensors which utilize internal, continuous conducting elements are continually monitored for breaks in such elements through continuity checks. A signal is generated from the wireless transmitter during door operation to indicate to the system that the link between the wireless transmitter and a wireless receiver is fully functioning at all times. The system can determine if an actual obstruction hazard is detected or if there is a loss of communications between the wireless transmitter and receiver link in the disclosed system while also allowing for wireless continuity checking between sensor switches utilized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.