Data processing: measuring – calibrating – or testing – Calibration or correction system – Signal frequency or phase correction
Reexamination Certificate
2002-11-30
2009-02-03
Wachsman, Hal D (Department: 2857)
Data processing: measuring, calibrating, or testing
Calibration or correction system
Signal frequency or phase correction
C702S127000, C702S055000, C073S29000R, C073S291000
Reexamination Certificate
active
07487057
ABSTRACT:
A field device electronics with a sensor unit for process measurements, wherein the field device electronics is connected with the sensor unit over corresponding signal paths, and wherein the field device electronics receives analog measurement signals (S1) of the sensor unit and produces analog drive signals (S5) for the fundamental wave excitation of the sensor unit and transmits to the sensor unit. Present for producing the drive signal(S5) are an analog/digital converter, a digital phase shifter and a digital/analog converter, wherein the analog measurement signals (S1) are digitized by the analog/digital converter and forwarded to a digital phase shifter, and wherein the output signal (S4) of a phase shifter is converted by the digital/analog converter into the analog drive signal (S5) for the sensor unit.
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The Closed Loop System of a Thermal Exciting Silicon Microstructure Resonator Pressure Sensor.
Evaluation and Realization of Digital Phase Shift Technique.
The Closed Loop System of a Thermal Excited Silicon Microstructure Resonator Pressure Sensor and English translation attached.
Evaluation and Realization of Digital Phase Shift Technique and English translation attached.
Dieterle Roland
Heilig Clemens
Bacon & Thomas PLLC
Endress & Hauser GmbH & Co. KG
Wachsman Hal D
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