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:
Aug. 17, 2021
Filed:
Jul. 04, 2017
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Ryo Ando, Hitachinaka, JP;
Hiroshi Onuki, Hitachinaka, JP;
Hiroshi Nakano, Tokyo, JP;
Takeo Hosokawa, Hitachinaka, JP;
Masayuki Hio, Hitachinaka, JP;
Shigenobu Komatsu, Hitachinaka, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Hitachinaka, JP;
Abstract
A thermal humidity measuring device includes first and second heating elements, and is capable of obtaining a plurality of measurement values (measured values) by effectively utilizing each of the heating elements, which includes measuring humidity by the first heating element. A thermal humidity measuring device includes a first bridge circuit that includes a first heating element that senses humidity, and a second bridge circuit that includes a second heating element that heats air around the first heating element. In the thermal humidity measuring device, a first output signal is extracted from the first bridge circuit, and the humidity is sensed. A second output signal is extracted from the second bridge circuit, and the second output signal includes information relating to at least any one of pressure, an air flow rate, and air temperature.