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:
Mar. 19, 2018
Seiko Epson Corporation, Tokyo, JP;
Norihito Matsukawa, Suwa, JP;
Seiko Epson Corporation, , JP;
Abstract
A sensor element control device which is connectable to a sensor element including a drive unit and a detection unit, includes a drive circuit that outputs a drive signal to the drive unit; a detection circuit that generates a detection signal based on a signal output from the detection unit; a diagnostic signal generation circuit that generates a diagnostic signal having a frequency component corresponding to a detuning frequency which is a difference frequency between a drive frequency which is a frequency at which the drive unit vibrates and a detection frequency which is a frequency at which the detection unit vibrates; and a fault diagnosis circuit that performs fault diagnosis based on a signal output from the detection unit when the diagnostic signal is superimposed on the drive signal.