Physical quantity measuring device, humidity detector abnormality detection device, and humidity detector abnormality detection method
AssigneeDenso Corporation
InventorsAkitoshi Mizutani, Yasushi Goka
Life of this patent
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Abstract
A physical quantity measuring device is configured to measure a physical quantity of a fluid. The physical quantity measuring device includes: at least two humidity detection parts configured to output a humidity signal corresponding to a humidity of the fluid; and an abnormality determination part configured to determine that an abnormality has occurred in the humidity detection parts in response to that a difference between the humidity signals obtained from the two humidity detection parts exceeds an abnormality determination threshold.
Claims24
A physical quantity measuring device configured to measure a physical quantity of a fluid, comprising:
- at least two humidity detection parts configured to output humidity signals each corresponding to a humidity of the fluid;
- an abnormality determination part configured to determine that an abnormality has occurred in two of the humidity detection parts in response to that a difference between the humidity signals obtained from the two humidity detection parts exceeds an abnormality determination threshold;
- and
- a heating part configured to heat the two humidity detection parts together on determination of the abnormality determination part that the abnormality has occurred in the humidity detection parts, wherein
- the abnormality determination part is configured to, after heating by the heating part is performed, perform a re-determination of the abnormality based on the difference between the humidity signals obtained from the two humidity detection parts.
An abnormality detection device for detecting an abnormality of a measuring component, the measuring component configured to measure a physical quantity of a fluid, the abnormality detection device comprising:
- a signal obtaining part configured to obtain humidity signals each corresponding to a humidity of the fluid from at least two humidity detection parts included in the measuring component;
- an abnormality determination part configured to determine that an abnormality has occurred in the humidity detection parts in response to that a difference between the humidity signals obtained from two of the humidity detection parts exceeds an abnormality determination threshold;
- and a heating part configured to heat the two humidity detection parts together on determination of the abnormality determination part that the abnormality has occurred in the humidity detection parts, wherein
- the abnormality determination part is configured to, after heating by the heating part is performed, perform a re-determination of the abnormality based on the difference between the humidity signals obtained from the two humidity detection parts.
An abnormality detection method for detecting an abnormality in a measuring component, the measuring component configured to obtain a physical quantity of a fluid, the method comprising:
- obtaining humidity signals each corresponding to a humidity of the fluid from at least two humidity detection parts included in the measuring component;
- determining that an abnormality has occurred in the humidity detection parts in response to that a difference between the humidity signals obtained from of the two humidity detection parts exceeds an abnormality determination threshold
- heating the two humidity detection parts together on determination that the abnormality has occurred in the humidity detection parts;
- and
- performing, after the heating is performed, a re-determination of the abnormality based on the difference between the humidity signals obtained from the two humidity detection parts.
Dependencies are inferred from the claim text.