Signal processing unit for a pressure switch or the like

Details Signal processing unit for a pressure switch or the like Signal processing unit for a pressure switch or the like

2006-08-01

2006-08-01

Tsai, Carol S. W. (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Mechanical measurement system

C702S064000, C702S065000

Reexamination Certificate

active

07085657

ABSTRACT:
A signal processing unit for a pressure switch or the like, comprising a sensor element, such as a strain gauge bridge, to supply an analog electrical signal that corresponds to a pressure; a signal processing unit which is connected downstream of the sensor element to amplify and digitize the analog signal; and a control unit for electrical switches which is connected downstream of the signal processing unit to switch external loads or the like. According to the invention, the signal processing unit comprises a chopper amplifier, which switches or balances the polarity of the analog electrical signal present at its input and supplied by the sensor element, and the amplified analog electrical or digitized signal present at its output, at the same clock rate.

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Parker Fluid Connectors Datasheet SCPSD/UK for Electric Pressure Switch SCPSD, published more than one year before the filing date of the subject application.
European Search Report regarding Application No. 02 02 6737 dated Jun. 1, 2005.

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