Sensor device
US9453888B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2015 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | May 15, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/07
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The sensor device includes: a physical quantity voltage conversion element; a differential amplifier; a first capacitor that includes one terminal connected to a first output terminal of the differential amplifier; a comparator; a low pass filter circuit arranged at the first output terminal of the differential amplifier; a control circuit configured to on/off control the physical quantity voltage conversion element, the differential amplifier, the comparator, and the low pass filter circuit; and a logic circuit configured to output a result of operation processing performed on an output signal of the comparator. The logic circuit is configured to: successively verify, in a case where there is a change between a previous logic output and a first logic output, the logic outputs a plurality of times; and output a control signal to the control circuit so that the low pass filter circuit is turned on in a second signal processing period and thereafter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.