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. 09, 2012
Filed:
Feb. 18, 2010
Walter Mehnert, Ottobrunn, DE;
Thomas Theil, Feldafing, DE;
Walter Mehnert, Ottobrunn, DE;
Thomas Theil, Feldafing, DE;
Other;
Abstract
An absolute magnetic position encoder includes a magnet carrier () which is fixedly connected to a body to be monitored and carries permanent magnets () which are spaced in the direction of motion and which in paired relationship form magnet segments, by the counting and resolution of which the position of the body is determined, stationary magnetosensitive sensors () which serve for fine resolution of the magnet segments and for recognition of the direction of motion and of which one can be supplied at least at times in cyclic relationship with a minimum current, a stationary Wiegand element () which when at least each second pair of magnetic poles passes delivers an electrical pulse which is added to or subtracted from a count value stored in non-volatile mode by an electronic arrangement (), having regard to the direction of motion, and a logic circuit () which calculates the position of the body from the count value and the signals of the magnetosensitive sensors, wherein a part of the electrical pulse energy of the Wiegand element is stored to supply the electronic arrangement and the at least one magnetosensitive sensor with current at least upon the failure of an external power supply.