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:
Dec. 22, 2015
Filed:
Dec. 20, 2011
Marcel Guwang, Lacroix-Falgarde, FR;
Marcel Guwang, Lacroix-Falgarde, FR;
Abstract
A sensor includes a piezoelectric detector () mounted in a support having electrically conductive walls forming a mechanical ground (MM), and an amplifier for processing the signal delivered by the piezoelectric detector, defining an electronic ground (ME) and at least a capacitive feedback loop (). A voltage adder circuit () is inserted into the capacitive feedback loop in order to add an electrical voltage which varies as a function of the potential difference between the mechanical ground (MM) and the electronic ground (ME), so that the variations of this potential difference are continuously compensated for at the input () of the processing amplifier () receiving the signal delivered by the piezoelectric detector ().