JPH0321757U

JPH0321757U -

Info

Publication number: JPH0321757U
Application number: JP8185589U
Authority: JP
Priority date: 1989-07-12
Filing date: 1989-07-12
Publication date: 1991-03-05

Description

[Brief explanation of drawings]

第１図は本考案の第１の実施例を示す構成図、
第２図は第１図に示す検知部の斜視図、第３図は
第２の実施例を説明する構成図、第４図は第３図
に示す検知部の斜視図、第５図は従来の液体濃度
センサの構成図である。１……第１の光フアイバ、１ｄ，１１ａ，２１
ａ……センシング部、２……光分岐器、３……発
光部、４……第２の光フアイバ、５……光検出部
、１６……第３の光フアイバ、７，１３……被測
定液体、１１，２１……検知部、１１ｂ，２１ｂ
……第１反射面、１１ｃ，２１ｃ……第２の反射
面、１１ｂ……反射コート、１２……受発光一体
素子、１２ａ……発光ダイオード、１２ｂ……フ
オトセンサ、１４……ホルダ、１５……発光部駆
動装置、１６……Ａ／Ｄ変換器、１７……ＣＰＵ
、１８……ＲＯＭ、１９……液晶表示。 FIG. 1 is a configuration diagram showing a first embodiment of the present invention;
2 is a perspective view of the detection section shown in FIG. 1, FIG. 3 is a configuration diagram explaining the second embodiment, FIG. 4 is a perspective view of the detection section shown in FIG. 3, and FIG. 5 is a conventional FIG. 2 is a configuration diagram of a liquid concentration sensor of FIG. 1...First optical fiber, 1d, 11a, 21
a...Sensing section, 2...Optical splitter, 3...Light emitting section, 4...Second optical fiber, 5...Photodetection section, 16...Third optical fiber, 7, 13...Target Measuring liquid, 11, 21...detection section, 11b, 21b
...First reflective surface, 11c, 21c...Second reflective surface, 11b...Reflective coat, 12...Reception/emission integrated element, 12a...Light emitting diode, 12b...Photo sensor, 14...Holder, 15... ...Light emitting unit driving device, 16...A/D converter, 17...CPU
, 18...ROM, 19...LCD display.

Claims

[Claims for Utility Model Registration] A method comprising: a detecting section in which sensing is formed; a light emitting section that emits a light beam to the detecting section; and a light detecting section that detects reflected light from the detecting section; In a liquid concentration sensor that determines the concentration of a liquid to be measured using the fact that the total reflection characteristic on a surface changes depending on the concentration value of the liquid to be measured, the detection part is formed of a transparent material, and the upper end of the detection part A light emitting section that emits a light beam and a light receiving section that receives the light beam are attached, a sensing surface that contacts the liquid to be measured is attached to the lower end of the detection section, and a light beam emitted from the light emitting section is connected to the sensing surface. a first reflective surface that reflects to
and a second reflecting surface that reflects the light beam reflected by the sensing surface toward the photodetecting section.