JPS581178U

JPS581178U - Magnetostrictive direct reading device

Info

Publication number: JPS581178U
Application number: JP4084382U
Authority: JP
Inventors: 松田　哲郎; 光一郎清水; 平田　承夫; 勝治近藤
Original assignee: 横河電機株式会社
Priority date: 1982-03-23
Filing date: 1982-03-23
Publication date: 1983-01-06

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は磁束密度と磁気歪量の関係を示す波形図、第２
図は本考案の一実施例を示すブロック図である。１０・・・・・・磁性材料、２０・・・・・・磁化回路
、３０・・・・・・磁束密度瞬時値検出回路、４０・・
・・・・変位検出器、５０・・・・・・Ｘ−Ｙ記録計、
６０・・・・・・最大磁束密度検出回路、７０・・・・
・・入、　Ｆ測定回路、８０・・・・・・入。 −４測定回路、９０・・・・・・切換スイッチ、１００
・・・・・・表示器。Figure 1 is a waveform diagram showing the relationship between magnetic flux density and magnetostriction.
The figure is a block diagram showing one embodiment of the present invention. 10...Magnetic material, 20...Magnetization circuit, 30...Magnetic flux density instantaneous value detection circuit, 40...
...Displacement detector, 50...X-Y recorder,
60... Maximum magnetic flux density detection circuit, 70...
...in, F measurement circuit, 80...input. -4 Measuring circuit, 90...Switch switch, 100
······display.

Claims

[Scope of utility model registration request]

(1) A displacement detection circuit that detects the displacement of a magnetic material that is displaced when a magnetic field is applied as an electric signal corresponding to the displacement, and a magnetic flux density detection coil and an integrator that are wound around the magnetic material. It has a magnetic flux density instantaneous value detection circuit that detects the instantaneous value of the magnetic flux density of the material, and is connected to the measurement circuits (a) and (b) below and the output terminal of the surface measurement circuit via a changeover switch. A magnetostriction measuring device comprising a display consisting of a digital voltmeter or an indicator that displays the output of the surface measuring circuit. (a) A pair of rectifiers that separate the output of the displacement detection circuit into positive polarity and negative polarity, a maximum value holding circuit that holds the maximum value of the output of both rectifiers, and a maximum value holding circuit that holds the maximum value of the output of both rectifiers, and a A measuring circuit comprising an adder for adding, and measuring from peak value to peak value of the amplitude of magnetostriction occurring in the magnetic material. (b) A zero and maximum instantaneous value holding circuit that holds the output of the displacement detection circuit when the magnetic flux density of the magnetic material detected by the instantaneous magnetic flux density detection circuit is zero and maximum, and both instantaneous value holding circuits. A measuring circuit comprising a subtracter for subtracting the output of the magnetic flux density, and measuring a value of magnetostriction occurring in the magnetic material when the magnetic flux density is zero and a maximum value.

(2) A changeover switch is provided at the output terminal of the measurement circuit (a) and the measurement circuit (b), and this changeover switch allows
The amount of magnetostriction (31': 艷, ., 1
Oh. Yay (D). , 1, oh. The magnetostriction measuring device according to claim 1, which is a utility model, and is comprised of eight hairpieces each having a display device connected to each one.