Patent ID: 11904958
Assignee: DENSO CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  H  G | IPC B  G

Claim 9:
10. A detection device comprising:
a main detection element configured to detect a physical quantity that changes according to a rotation of a detection target;
a sub detection element configured to detect a physical quantity that changes according to the rotation of the detection target;
a signal processing unit configured to output main rotation information that is information according to a detection value of the main detection element and sub rotation information that is information according to a detection value of the sub detection element; and
a package configured to seal the main detection element, the sub detection element, and the signal processing unit, wherein
centers of the main detection element and the sub detection element are arranged at positions displaced from a detection center of the detection target,
the sub detection element is arranged at a position displaced from a straight line connecting a center of the main detection element and the detection center, and
the main detection element is arranged closer to the detection center than the sub detection element,
the detection value of the main detection element is used for control calculation, and
the detection value of the sub detection element is used for abnormality detection of the main detection element.