JPS6148384U

JPS6148384U -

Info

Publication number: JPS6148384U
Application number: JP13421184U
Authority: JP
Priority date: 1984-09-04
Filing date: 1984-09-04
Publication date: 1986-04-01

Description

[Brief explanation of the drawing]

第１図、第２図は従来の独立した板有信号検出
器を説明するための図、第３図はこの考案による
実施例で、レーザドツプラ速度計を基本機材とし
て板有信号を検出する構成を示す図、第４図は光
検出信号の例を示す図であり、図において、１は
被測定体、２は光送信機、３は光受信機、４は板
有検知用光線、４′は板有検知用反射光線、５は
レーザ装置、６は光分配器、７は送光用フアイバ
ケーブル、８は送光用光プローブ、９はレーザビ
ーム、１０は反射レーザ光、１１は受光用プロー
ブ、１２は受光用フアイバケーブル、１３は光検
出器、１４は信号処理回路である。なお、図中同
一符号は同一または相当部分を示す。 Figures 1 and 2 are diagrams for explaining a conventional independent plate signal detector, and Figure 3 is an embodiment based on this invention, which has a configuration for detecting plate signals using a laser Doppler speedometer as the basic equipment. 4 is a diagram showing an example of a photodetection signal. In the figure, 1 is an object to be measured, 2 is an optical transmitter, 3 is an optical receiver, 4 is a light beam for detecting the presence of a plate, and 4' is an example of a photodetection signal. 5 is a laser device, 6 is an optical distributor, 7 is a fiber cable for light transmission, 8 is an optical probe for light transmission, 9 is a laser beam, 10 is a reflected laser beam, 11 is a light receiving probe. , 12 is a fiber cable for receiving light, 13 is a photodetector, and 14 is a signal processing circuit. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

a laser device that generates a laser beam; a dividing device that divides the laser beam generated from the laser device into two laser beams; a device that irradiates the divided laser beam onto a surface of an object to be measured in a crossing manner; an angle setting means for variably setting the optical axes of the two laser beams to a required angle symmetrical to a separately provided reference axis, and scattering of each of the two laser beams when reflected by the object to be measured. a light receiving means for receiving light on the reference axis; and a light receiving means that converts the light reception signal obtained by the light receiving means into a frequency signal proportional to the speed of the object to be measured, a signal indicating that the object to be measured has entered the measurement position, and a signal indicating that the object to be measured has entered the measurement position. A laser velocity meter characterized by comprising a signal processing means for converting into a level signal proportional to the amount of light reflected from a measuring object and processing the same.