Patent ID: 8250917
Filing Date: 2012-08-28
Classification: G01C

Abstract:
1. A physical quantity sensor, comprising: a vibrating element having a drive arm section and a detection arm section; a driving circuit generating a driving signal for driving the drive arm section with a first driving line and a second driving line; and a detection circuit detecting a detected signal from the detection arm section with a first detection line and a second detection line, wherein at least one of the first driving line and the second driving line is wired so that a static coupling is generated between a portion of wiring of at least one of the first and second driving lines disposed adjacent to a portion of wiring of at least one of the first and second detection lines, wherein the driving signal carried by the at least one of the first and the second driving lines is transmitted to the at least one of the first and second detection lines via the static coupling, and wherein the detection circuit performs a testing operation of the physical quantity sensor based upon the driving signal transmitted to the at least one of the first and second detection lines via the static coupling.