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. 25, 2021
Filed:
Oct. 30, 2018
Seiko Epson Corporation, Tokyo, JP;
Noriyuki Murashima, Chino, JP;
Teppei Higuchi, Chino, JP;
Abstract
A physical quantity measurement device includes a sensor element in which coupling capacitances are formed between a drive electrode and a first detection electrode and between the drive electrode and a second detection electrode; and a circuit device that includes a drive circuit which supplies a drive signal to the drive electrode, a detection circuit which detects physical quantity information corresponding to a physical quantity based on first and second detection signals from the first and second detection electrodes, and a failure diagnosis circuit. The circuit device includes first and second switches that are provided between first and second terminals to which the first and second detection signals are input and the detection circuit. The failure diagnosis circuit performs a failure diagnosis, based on a detection result of the detection circuit when connection states of the first and second switches are changed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile