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Sensor system

  • US 20050216149A1
  • Filed: 03/22/2005
  • Published: 09/29/2005
  • Est. Priority Date: 03/25/2004
  • Status: Active Grant
First Claim
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1. A sensor system comprising:

  • a vibration-type angular-speed sensor unit including;

    a vibrator vibrating in a reference direction determined in advance; and

    a detection waveform generation unit for detecting a detection-object vibration component resulting from application of an angular speed to the vibrator as a component in an angular-speed detection direction set to cross the reference direction and for generating an angular-speed detection waveform based on the detection-object vibration component;

    an acceleration sensor unit for outputting a first-type acceleration signal, wherein the first acceleration sensor unit is provided separately from the vibration-type angular-speed sensor unit;

    a second-type acceleration-signal generation unit for extracting an acceleration signal component from a detection-object vibration component generated by the vibration-type angular-speed sensor unit and outputting the extracted acceleration signal component as a second-type acceleration signal; and

    an abnormality detection unit for detecting an abnormality of at least the vibration-type angular-speed sensor unit or the acceleration sensor unit based on the second-type acceleration signal and the first-type acceleration signal.

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