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.:

US 9018963 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 28, 2015

Filed:

Sep. 07, 2012
Applicants:

Dongyoun Sim, Tokyo, JP;

Masaru Soeda, Tokyo, JP;

Inventors:

Dongyoun Sim, Tokyo, JP;

Masaru Soeda, Tokyo, JP;

Assignee:

Azbil Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 27/26 (2006.01); G01N 27/22 (2006.01); G01K 7/34 (2006.01);
U.S. Cl.
CPC ...
G01N 27/223 (2013.01); G01N 27/225 (2013.01); G01N 27/22 (2013.01); G01K 7/34 (2013.01);
Abstract

A humidity sensor according to the present examples include a sensor portion for detecting humidity in the ambient environment, and a power supply portion for applying an AC voltage to the sensor portion, wherein the sensor portion is structured so as to have an impedance that is higher than a sensor portion of a conventional humidity sensor. As a result, it is possible to reduce the amount of power consumed in the sensor portion when compared to that of a conventional humidity sensor. Doing so makes it possible to reduce the amount of electrical power consumed in the humidity sensor as a whole in the present invention, including the sensor portion, when compared to that of a conventional humidity sensor.


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