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Patent
Title

Drucksensoranordnung mit einem Drucksensor, einem Referenzelement und einer Messschaltung

Other Title
Pressure sensor arrangement comprising a pressure sensor, a reference element and a measurement circuit
Abstract
A pressure sensor arrangement comprising a pressure sensor, a reference element and measurement circuit, attains a high measurement accuracy by the fact that the measurement circuit is a switch capacitance measurement circuit, the pressure sensor is applied with a first potential during a first switching state of the switch capacitance measurement circuit and is applied with a second potential in a second switching state, the pressure sensor is connected to a switch capacitance measurement circuit by a second electrode via the inverting input of an operational amplifier, the reference element is located between the inverting input of the operational amplifier and its output and is discharged during one of the two switching states, and the non-inverting input of the operational amplifier is applied with a reference potential.
Inventor(s)
Zimmer, Günter
Eichholz, Jörg  
Mokwa, Wilfried
Kandler, Michael
Manoli, Yiannakis
Link to Espacenet
http://worldwide.espacenet.com/publicationDetails/biblio?DB=worldwide.espacenet.com&locale=en_EP&FT=D&CC=DE&NR=4042335A
Patent Number
1990-4042335
Publication Date
1993
Language
German
Fraunhofer-Institut für Mikroelektronische Schaltungen und Systeme IMS  
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