Measuring and testing – Fluid pressure gauge – Combined
Reexamination Certificate
2006-03-07
2009-02-17
Allen, Andre J. (Department: 2855)
Measuring and testing
Fluid pressure gauge
Combined
C073S708000
Reexamination Certificate
active
07490518
ABSTRACT:
Systems and methods for digitally controlling sensors. In one embodiment, a digital controller for a capacitance diaphragm gauge is embedded in a digital signal processor (DSP). The controller receives digitized input from a sensor AFE via a variable gain module, a zero offset module and an analog-to-digital converter. The controller automatically calibrates the received input by adjusting the variable gain and zero offset modules. The controller also monitors and adjusts a heater assembly to maintain an appropriate temperature at the sensor. The controller utilizes a kernel module that allocates processing resources to the various tasks of a gauge controller module. The kernel module repetitively executes iterations of a loop, wherein in each iteration, all of a set of high priority tasks are performed and one of a set of lower priority tasks are performed. The controller module thereby provides sensor measurement output at precisely periodic intervals, while performing ancillary functions as well.
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International Search Report for PCT/US03/16911 mailed Nov. 3, 2003.
Communication Pursuant to Article 96(2) EPC in European Search Report for EP 03731440.8 mailed Dec. 4, 2006.
Albert David M
Arrant Edwin K
Edwards Marvin B
Allen Andre J.
Celerity, Inc.
Jenkins Jermaine
Lowrie Lando & Anastasi, LLP
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