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1. (WO2017061094) SENSOR

Pub. No.:    WO/2017/061094    International Application No.:    PCT/JP2016/004412
Publication Date: Fri Apr 14 01:59:59 CEST 2017 International Filing Date: Sat Oct 01 01:59:59 CEST 2016
IPC: G01N 21/3504
Applicants: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
パナソニックIPマネジメント株式会社
Inventors: KISHIMOTO, Shinichi
岸本 慎一
OHBAYASHI, Masahiko
大林 正彦
SAKAI, Koji
境 浩司
Title: SENSOR
Abstract:
This sensor is provided with: a structure which includes an internal space configured to allow a fluid to flow thereinto; a light emitting element which emits light that passes through the internal space; first and second light-receiving elements which receive the light having passed through the internal space; a first optical filter which is provided between the first light-receiving element and the light emitting element and through which the light passes through; a second optical filter which is provided between the second light-receiving element and the light emitting element, and through which the light passes; and a control unit. The first and second light-receiving elements respectively generate first and second outputs in accordance with the intensities of the received light. The control unit is configured to alter the light emitted by the light emitting element so as to compare: the ratio of the first output to the second output before alteration of the light; with the ratio of the first output to the second output after alteration of the light.