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:
Jun. 12, 2012
Filed:
Nov. 03, 2009
Kenji Kato, Okazaki, JP;
Kenji Kato, Okazaki, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
In a method of detecting an angular velocity Vof an angular velocity sensor including a vibrating body, a monitoring signal Vm(t) sensing a displacement of the vibrating body in a first direction and a sensing signal Vs(t) sensing a displacement of the vibrating body in a second direction crossing the first direction are detected. A difference in time between a first feature point where the monitoring signal Vm(t) crosses a first reference level and a second feature point where the sensing signal Vs(t) crosses a second reference level is set as Δt, a sensing direct-current voltage corresponding to an amplitude of the sensing signal Vs(t) is set as Vsd, a driving frequency is set as fd, and the angular velocity Vis calculated from formula of V=Vsd×sin(2·π·fd·ΔT).