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:
May. 30, 2006
Filed:
Nov. 30, 2001
Wolfram Geiger, Niedereschach, DE;
Alexander Gaisser, Aach, DE;
Norbert Niklasch, Munich, DE;
Hahn-Schickard-Gesellschaft fur Angewandte Forschung e.V., Villingen-Schwenningen, DE;
Abstract
An analogue output signal of a sensor which comprises a carrier signal with a carrier frequency ωwhich is modulated by a measurement size is sampled with a sampling frequency ωto receive a sampled sensor output signal. The frequency ωof the sampling signal is set so that it is an integer divisor n of the carrier frequency ω, wherein the phase of the sampling signal is set so that the sampling signal is synchronous to the sensor output signal. The sampled sensor output signal is filtered now to remove periodically repeated signal components from the sampled sensor output signal. Then a filtered useful signal is received, wherein its amplitude is proportional to the measurand detected by the sensor.