Pressure sensor with improved rate-of-change compatible data output
US7633420B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 2008 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Jul 5, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P5/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An integrated sensor implementation employs a data acquisition method for producing digital output signals that enables computing low latency, low noise, rate of pressure (or altitude etc.) change measurements. An example sensor includes a self-digitizing pressure and temperature sensor circuit that outputs a serial digital signal that varies with at least one physical parameter to which the sensor circuit is exposed. The sensor incorporates an internal sigma-delta A/D converter and digital data acquisition device that effectively time-stamps all acquired data. This time stamped data is then transmitted to an external processing resource (microprocessor) that is used to convert the self-digitized, time stamped data into low latency, low-noise proportional and rate parameter outputs having the desired engineering units for at least one physical parameter sensed. This low-latency, low noise rate of change signal may be derived without the latency penalty of digital filtering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.