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Bias superposition: an on-line test strategy for a MEMS based conductivity sensor

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Published
Publication date2005
Host publicationETS 2005:10th IEEE European Test Symposium, Proceedings
Place of PublicationLOS ALAMITOS
PublisherIEEE COMPUTER SOC
Pages88-93
Number of pages6
ISBN (Print)0-7695-2341-2
<mark>Original language</mark>English

Abstract

A novel on-line monitoring technique for a range of MEMS and integrated sensor systems is presented based on the injection of a test stimuli into the bias structure of transducer functions. The technique "Bias Superposition" utilises both signal injection and signal extraction techniques to achieve an indication of structural integrity of the transducer and interface. The technique has been successfully applied to a thick film conductance sensor.