Monitoring sensor with activation
US9046597B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2011 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Sep 1, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16Z99/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A monitoring sensor for detecting a test signal from an external signal generator at an input for receiving signals, to switch the monitoring sensor from a passive state to an active state when a signal is detected, to switch the monitoring sensor to a test state after a test period “t2” has expired, to change an output signal from an output of the monitoring sensor after an activation period “t3” has expired, this change in the output signal corresponding to a signal which arises when the monitoring sensor triggers a switching operation after an object has been detected, to convert the output signal to the initial state again after the withdrawal of the test signal has been detected, and to provide this renewed signal change as the signal for an external signal generator, the monitoring sensor changing to the monitoring state after this signal sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.