SENSOR DEVICE
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Accused Products
Abstract
A sensor device includes a time determining part that determines time point information, and adds the time point information to the output supplied from a part subjected to failure diagnosis and related to generation of a failure detection signal, and to the output related to generation of a sense signal. With this structure, the failure detection signal is correlated with the sense signal by the time point information. Alternatively, the sensor device includes an output circuit that correlates the failure detection signal with the sense signal supplied at the same time point as the failure detection signal, and outputs both signals using a time division method.
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Citations
12 Claims
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1-8. -8. (canceled)
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9. An inertial sensor comprising:
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a driving circuit configured to output a drive signal; a sensing element to which the drive signal from the driving circuit is supplied; a detecting circuit configured to extract a response signal from the sensing element; a processing circuit to which the response signal from the detecting circuit is supplied, the processing circuit configured to extract a sense signal from the response signal; a failure diagnosing circuit electrically coupled to at least one of the driving circuit, the detecting circuit, and the processing circuit; and an output circuit configured to digitally output, using a time division method, a failure detection signal from the failure diagnosing circuit, and the sense signal from the processing circuit, wherein the output circuit is configured to correlate the failure detection signal with the sense signal supplied at an identical time point with the failure detection signal, and output the failure detection signal and the sense signal using the time division method, so that whether the sense signal is a result in a normal state or a result in an abnormal state can be determined. - View Dependent Claims (10)
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11. An inertial sensor comprising:
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a first driving circuit configured to output a first drive signal; a second driving circuit configured to output a second drive signal; an angular velocity sensing element to which the first drive signal from the first driving circuit is supplied; an acceleration sensing element to which the second drive signal from the second driving circuit is supplied; a first detecting circuit configured to extract a first response signal from the angular velocity sensing element; a second detecting circuit configured to extract a second response signal from the acceleration sensing element; a first processing circuit to which the first response signal from the first detecting circuit is supplied, the first processing circuit being configured to extract a first sense signal from the first response signal; a second processing circuit to which the second response signal from the second detecting circuit is supplied, the second processing circuit being configured to extract a second sense signal from the second response signal; a failure diagnosing circuit electrically coupled to at least one of the first driving circuit, the first detecting circuit, and the first processing circuit, and electrically coupled to at least one of the second driving circuit, the second detecting circuit, and the second processing circuit; and an output circuit configured to digitally output, using a time division method, a failure detection signal from the failure diagnosing circuit, the first sense signal from the first processing circuit, and the second sense signal from the second processing circuit, wherein the output circuit is configured to correlate the failure detection signal with the first sense signal and the second sense signal supplied at an identical time point with the failure detection signal, and output the failure detection signal, the first sense signal and the second sense signal using a time division method, so that whether the first sense signal and the second sense signal are results in a normal state or results in an abnormal state can be determined. - View Dependent Claims (12)
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Specification