Digital detector
US9638482B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 2013 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Mar 2, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/84
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure provides a digital detector apparatus for use with a sensor unit is provided wherein the sensor unit includes an emitter device and a receiver device, the receiver device having a capacitance. The digital detector apparatus comprises at least a first input port, first output port, and a second output port; and an A/D converter circuit wherein an input of the A/D converter circuit is coupled to the first input port for receiving an output of the receiver device; wherein the first output port of the digital detector apparatus is coupled for charging and discharging the capacitance of the receiver device; the second output port of the digital detector apparatus is coupled for driving the emitter device; and the A/D converter circuit derives a sensor output value from the output of the receiver device during a number of charging and discharging cycles. A digital smoke detector and a method of generating an output signal in a digital detector are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.