Sensor system
First Claim
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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Accused Products
Abstract
An inertia sensor system incorporates a vibration-type angular-speed sensor unit and an acceleration sensor unit provided separately. The inertia sensor system also includes a second-type acceleration signal generation unit to extract an acceleration signal component from a detection-object vibration component generated by the vibration-type angular-speed sensor unit and outputs the extracted acceleration signal component as a second-type acceleration signal. An abnormality detection unit detects 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 a first-type acceleration signal detected and output by the acceleration sensor unit.
25 Citations
9 Claims
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1. A sensor system comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification