Patent ID: 8423229
Filing Date: 2013-04-16
Classification: G01C,G01P

Abstract:
1. A self-diagnostic device for an acceleration or angular-velocity sensor, performing a diagnosis as to whether or not a sensor main body for detecting acceleration or angular velocity is in a normal status, comprising: a diagnosis control unit, including a processor, for providing pseudo acceleration or angular velocity to said sensor main body by applying a test signal having prescribed magnitude to said sensor main body; an integration unit for integrating a sensor signal outputted from said sensor main body in response to said test signal, the integration unit beginning integration after a non-zero output stabilization time after application of the test signal; and a determination unit for determining whether or not an integration value obtained at an elapse of an integration time falls within a prescribed normal range, the integration time being set equal to a value at which the integration value is equal to a prescribed target value during an initial integration, the target value being within the normal range.