Detection unit
AssigneeDenso Corporation
InventorNao Uematsu
Life of this patent
Estimating the term…
Abstract
A detection unit has a rotation angle sensor including at least three detection elements detecting a change of physical quantity and outputting angle signals respectively corresponding to detection values of the respective detection elements. The detection unit also has a controller including an abnormality monitor monitoring the angle signals and identifying the respective angle signals either as a normal signal or an abnormal signal. The controller either outputs a value corresponding to at least one of two normal signals when two or more normal signals are identified or stops output regarding the detection signal when two or more normal signals are not identified.
Claims14
A detection unit comprising:
- a sensor including at least three detection elements configured to detect a change of physical quantity and outputting detection signals respectively corresponding to detection values from the at least three detection elements;
- and
- a controller (i) including an abnormality monitor configured to monitor the detection signal and identify a normal signal and an abnormal signal, the normal signal being a normal detection signal and the abnormal signal being a detection signal having abnormality, and (ii) either (a) outputting a value corresponding to at least one of two normal detection signals when two or more normal detection signals are identified or (b) stopping output regarding the detection signal when two or more normal detection signals are not identified.
A detection unit comprising:
- a sensor including at least three detection elements configured to detect a change of physical quantity and outputting detection signals respectively corresponding to detection values from the at least three detection elements;
- and
- a controller including an abnormality monitor configured to:
- compare each detection signal to a reference signal;
- determine whether each detection signal is a normal signal or an abnormal signal by determining whether a difference between each detection signal and the reference signal is less than an abnormality determination threshold, each normal signal comprising a detection signal in which the difference between a respective detection signal and the reference signal is less than or equal to the abnormality determination threshold, each abnormal signal comprising a detection signal in which the difference between the respective detection signal and the reference signal is greater than the abnormality determination threshold;
- count a total number of normal signals among the detection signals;
- determine whether the total number of normal signals is greater than or equal to a predetermined threshold;
- and
- output a value corresponding to at least one of the respective detection signals that are determined to be normal signals, in response to the total number of normal signals being greater than or equal to the predetermined threshold.
Dependencies are inferred from the claim text.