Honeywell International Inc.

Infineon Technologies Ag

Vlad Buiculescu

Cornel P Cobianu

James Z Liu

James D Cook

Franz Michael Darrer

Brian John Marsh

Brian Speldrich

Cesare Buffa

Alessandro Caspani

Ioan Pavelescu

Constantin Crisu

Constantin Stroi

Dan Ioan Dumitru Stoica

Matthias Böhm

Brian D Speldrich

A sensor circuit, having a startup phase and an operation phase, includes: a sensor configured to generate a sensor signal based on a measured property, wherein the sensor signal has a frequency spectrum defined by a first frequency and a second frequency that is greater than the first frequency; a signal processing circuit including an analog-to-digital converter (ADC) configured to convert the sensor signal into a digital sensor signal; and an offset diagnosis circuit. The offset diagnosis circuit includes: a low pass filter having a cutoff frequency less than the first frequency and configured to generate a filtered signal based on the digital sensor signal; an offset register configured to store a startup signal value of the filtered signal during the startup phase; and an offset comparator circuit configured to set a threshold range based on the startup signal value for use during the operation phase.

Gain and offset diagnosis of analog-to-digital converters in sensor signal path

A quartz sensor method and system are disclosed in which a plurality of SAW sensing resonators can be mechanically simulated for implementation upon a quartz wafer substrate. The quartz wafer substrate can thereafter be appropriately etched to produce a quartz diaphragm from the quartz wafer substrate. A plurality of SAW sensing resonators (e.g., pressure, reference and/or temperature SAW resonators) can then be located upon the quartz wafer substrate, which is based upon the previously mechanically simulated for implementation upon the substrate to thereby produce a quartz sensor package from the quartz wafer substrate.

Method a quartz sensor

Growing community of inventors

Bucharest, Romania

Vlad Buiculescu