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:
Aug. 04, 2020
Filed:
Jun. 09, 2016
Tri-force Management Corporation, Saitama-ken, JP;
TRI-FORCE MANAGEMENT CORPORATION, Saitama-Ken, JP;
Abstract
A force sensor of the present invention includes: a supporting body arranged on an X-Y plane; a deformation body arranged opposite to the supporting body and having a deformation part elastically deformed by an action of a force to be detected; a fixed electrode arranged on the supporting body; a displacement electrode provided to the deformation part of the deformation body in such a manner as to face the fixed electrode with which it forms a capacitive element; and a detection circuit that outputs an electrical signal representing the acting force based on a variation amount of a capacitance value of the capacitive element, wherein the capacitive element includes a first capacitive element and a second capacitive element, and the detection circuit determines whether the force sensor is normally functioning based on a first electrical signal corresponding to a capacitance value of the first capacitive element, a second electrical signal corresponding to a capacitance value of the second capacitive element, and an added electrical signal corresponding to a sum of the capacitance values of the first and second capacitive elements.