The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 17, 2009
Filed:
Oct. 07, 2005
Josef Glaser, Graz, AT;
Dietmar Kroeger, Graz, AT;
Gernot Leuprecht, St. Radegund-Rinnegg, AT;
Christian Reiter, Graz, AT;
Josef Glaser, Graz, AT;
Dietmar Kroeger, Graz, AT;
Gernot Leuprecht, St. Radegund-Rinnegg, AT;
Christian Reiter, Graz, AT;
Piezocryst Advanced Sensorics GmbH, Graz, AT;
Abstract
A sensor element () has at least one measurement element () with piezoelectric and pyroelectric properties, and measurement electrodes (). A measurement variable and a disturbance variable act simultaneously upon the at least one measurement element () and the measurement signal derived from the measurement electrodes () includes an interference signal. The sensor element () has at least one compensation element (') upon which only the disturbance variable acts, so that a correction signal used to compensate for the interference signal in the measurement signal can be derived from the compensation element (). The invention consists in that the compensation element (′) is in thermal contact with a first support () and with a second support () of the measurement element (), or with the measurement element (), over its length between the supports (), so that substantially the same temperature field is established in the measurement element () and in the compensation element (′).