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:
Sep. 02, 2025
Filed:
Sep. 15, 2021
Azbil Corporation, Tokyo, JP;
Yoshiaki Yamagishi, Tokyo, JP;
AZBIL CORPORATION, Tokyo, JP;
Abstract
A closed-space sensor system that enables stable operation in a closed space is provided. The closed-space sensor system includes: a power transmitter of an electromagnetic wave irradiator emitting an electromagnetic wave; and a plurality of sensors, each of which includes an antenna and is driven by converting the electromagnetic wave received via the antenna into electric power. Each of the plurality of sensors may further include a power storage unit, and each of the plurality of sensors may start to be driven when a power storage amount in the power storage unit reaches a drive start threshold value that is common to the plurality of sensors. The power transmitter of the electromagnetic wave irradiator and the plurality of sensors may be arranged in a closed space.