The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 15, 2018
Filed:
Nov. 10, 2014
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Hiroaki Hoshika, Hitachinaka, JP;
Takayuki Yogo, Hitachinaka, JP;
Takahiro Miki, Hitachinaka, JP;
Takeo Hosokawa, Hitachinaka, JP;
Yuki Isoya, Hitachinaka, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
A humidity measuring device includes an apparatus that determines whether or not a water droplet adheres to a surface of a sensor element which detects the humidity, based on changes in humidity and temperature of the intake air. The apparatus calculates a determination value based on a rate of change of the temperature and a rate of change of relative humidity. The apparatus also compares the determination value with a threshold. The apparatus also determines that a water droplet adheres to the surface of the sensor element when a state where the determination value is larger than the threshold continues for a determination time or longer.