Patent ID: 11885620
Assignee: DENSO CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 16:
17. The inertial detection device of claim 11,
wherein the first sensor axis points in the opposite direction,
wherein the first error condition is defined as satisfied when a sum of the first angular velocity signal plus the second angular velocity signal is greater than the difference threshold,
wherein, upon a determination that the first error condition is satisfied, the inertial detection device is further configured to identify one of at least two possible error signals:
(i) upon a determination that ΔSa>THa, and ΔSb≤THb,
then the abnormality determination unit is configured to output an error signal indicating that the first sensor appears abnormal and that the second sensor appears normal, such that the second sensor may be used; and

(ii) upon a determination that ΔSa≤THa, and ΔSb>THb,
then the abnormality determination unit is configured to output a second error signal indicating that the first sensor appears normal and that the second sensor appears abnormal, such that the first sensor may be used,

wherein ΔSa is an offset value of the first angular velocity signal,
wherein ΔSb is an offset value of the second angular velocity signal,
wherein THa is a first offset threshold, and
wherein THb is a second offset threshold.