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:
Mar. 22, 2022
Filed:
Mar. 16, 2020
Azbil Corporation, Tokyo, JP;
Shun Onuma, Tokyo, JP;
Raita Mori, Tokyo, JP;
AZBIL CORPORATION, Tokyo, JP;
Abstract
A flame detection system includes: an optical sensor that detects light emitted from a light source; an applied voltage generating circuit that applies a drive pulse voltage to the optical sensor; a discharge determining portion that detects a discharge from the optical sensor; a discharge probability calculating portion calculates discharge probabilities in a first state and a second state in which the optical sensor is shielded from light and a pulse width of the drive pulse voltage is different; a storing portion storing a reference pulse width as a sensitivity parameter; and a discharge probability calculating portion that calculates a discharge probability of an irregular discharge occurring without depending on the received light quantity by the optical sensor based on the sensitivity parameter, the discharge probabilities calculated in the first and second states and the pulse widths of the drive pulse voltage in the first and second states.