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1. 发明专利

JPS59155720A Liquid level detecting apparatus 失效
标题翻译：液位检测装置
公开(公告)号：JPS59155720A
公开(公告)日：1984-09-04
申请号：JP2953883
申请日：1983-02-25
申请人： Fuji Kagaku Kogyo Kk
发明人： YAMAMOTO YOSHIO
IPC分类号： G01F23/30 , G01F23/60
CPC分类号： G01F23/606
摘要： PURPOSE:To simplify the structure of the titled apparatus by dispensing with the provision of the wiring of an electric signal in the vicinity of a tank and to make it possible to easily detect the position of the boundary surface between liquids having different specific gravities, by detecting the position of the boundary surface between liquids having different specific gravities by detecting the position where a light blocking plate blocks the optical signal from a light emitting part. CONSTITUTION:A large number of slits 8a are provided to the light blocking plate 8 supported by the support rod 7a of a float 7 while optical fibers 6, 9 are arranged at constant positions opposed so as to interpose the light blocking plate 8 therebetween. The light emitted from the emitting surface of the optical fiber 6 is formed into a fine beam passing one slit 8a and passes the slit 8a at a predetermined position to reach the light receiving surface of the optical fiber 9. If the optical signal received by the optical fiber 9 is digitally counted by a light receiving apparatus 10, the position of the slits 8a of the slit plate 8 moved in cooperated relation to the movement of the float 7, that is, the boundary surface L1 between liquids having different specific gravities can be detected.
摘要翻译：目的：为了简化标题装置的结构，通过分配在水箱附近提供电信号的布线，并且可以容易地检测具有不同比重的液体之间的边界表面的位置，由通过检测遮光板阻挡来自发光部分的光信号的位置来检测具有不同比重的液体之间的边界表面的位置。构成：将大量狭缝8a设置在由浮子7的支撑杆7a支撑的遮光板8上，同时光纤6,9被布置在相对的恒定位置处，以便将遮光板8插入其间。从光纤6的发射表面发射的光被形成为通过一个狭缝8a的细光束，并将狭缝8a穿过预定位置到达光纤9的光接收表面。如果光信号光纤9由光接收装置10进行数字计数，狭缝板8的狭缝8a的位置与浮子7的运动协调关系移动，即具有不同比重的液体之间的边界面L1可以被检测。

2. 发明专利

JPS5973729A Liquid level detecting device 失效
标题翻译：液位检测装置
公开(公告)号：JPS5973729A
公开(公告)日：1984-04-26
申请号：JP18278382
申请日：1982-10-20
申请人： Fuji Kagaku Kogyo Kk
发明人： YAMAMOTO YOSHIO
IPC分类号： G01F23/30 , G01F23/60
CPC分类号： G01F23/606
摘要： PURPOSE:To simplify the structure and to omit electric wiring, which might become the cause of fire and explosion, in the vicinity of a tank, by shielding light emitted from a light emitting part to a light receiving part by a light shielding plate, which is moved in association with a float floating at the interface between different liquids having different specific gravities, and detecting the position of the interface between the liquids having the different specific gravities from the change in the light shielding position. CONSTITUTION:A light signal from a light emitting device 5 is transmitted to light emitting surfaces a-g, which are arranged on a light emitting part 4d of a liquid level detecting body 4 at a constant interval, through an optical fiber cable 6. The light beams are emitted from the light emitting surface a-g to light receiving surfaces a'-g' of a light receiving part 4e, and reach a light receiving device 10 through an optical fiber cable 9. The light signal is transduced into an electric signal and displayed on a display device 11. A light shielding plate 8, which is supported by a supporting rod 7a of a float 7, shields part of the light signals emitted from the light emitting surfaces a-g of the light emitting part 4d. Therefore, the light signals at that part do not reach the light receiving surfaces a'-g'. When the positions of the light receiving surfaces a'-g' of the light receiving part 4e, which do not receive the light, are detected, an interface L1 between the liquids having the different specific gravities can be found.
摘要翻译：目的：为了简化结构并省略可能成为火灾和爆炸的原因的电气布线，通过屏蔽板将发光部分发出的光屏蔽到光接收部分，从而在储罐的附近，与漂浮在具有不同比重的不同液体之间的界面处的浮子相关联地移动，并且检测具有不同比重的液体之间的界面的位置与遮光位置的变化。结构：来自发光器件5的光信号通过光纤电缆6传输到以等间隔布置在液位检测体4的发光部分4d上的发光面ag。光束从光发射表面AG发射到光接收部分4e的光接收表面a'-g'，并通过光纤电缆9到达光接收装置10.光信号被转换成电信号并显示在显示装置11.由浮子7的支撑杆7a支撑的遮光板8遮蔽从发光部4d的发光面ag发射的一部分光信号。因此，该部分的光信号不到达受光面a'-g'。当检测到不接收光的光接收部分4e的光接收表面a'-g'的位置时，可以找到具有不同比重的液体之间的界面L1。

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