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:
Oct. 04, 2011
Filed:
Aug. 16, 2006
Frank Perske, Graz, AT;
Colin Steele, Edingburgh, GB;
Marcel Urban, Fernitz, AT;
austriamicrosystems AG, Unterpremsrätten, AT;
Abstract
A sensor system and method of operating such a sensor system for measuring an angle of rotation with an arrangement of at least four magnetic sensors (), at least four signal modulators (), each one connected to one of the magnetic sensors () and having at least two control states, whereby, in a first state (+), a signal received from a sensor () is output by the signal modulators () and, in a second state (−), the inverse of the signal received from the sensor () is output by the signal modulators (), a means () for adding the signals output by the signal modulators () and a diametrically magnetized magnetic source (). The sensor system further comprises a data output () and a control circuit () with at least one control input (), allowing to switch the control circuit () into at least two different modes. In a normal mode of operation, the signal modulators () are configured in such a way that a signal corresponding to the angular position of the diametrically magnetized magnetic source () is output to the data output. In an alignment mode of operation, the signal modulators () are configured in such a way that a signal corresponding to the average magnetic field strength detected by the sensors () is output to the data output ().