JPS5860247U

JPS5860247U - Fluid pressure detection device

Info

Publication number: JPS5860247U
Application number: JP15604681U
Authority: JP
Inventors: 西條　芳明; 知見　恂
Original assignee: Toshiba Corp
Current assignee: Toshiba Corp
Priority date: 1981-10-20
Filing date: 1981-10-20
Publication date: 1983-04-23

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 drawings]

図は本考案の一実施例を示すもので、第１図ａ。ｂは流体圧検出装置のセンサの構造を示す横断面図およ
び背面図、第２図は流体圧検出装置の回路部分の構成を
示すブロック図、第３図は検出電力と油圧との関係の一
例を示す特性図、第４図はギャップと出力電圧差との関
係の一例を示す特性図、第５図はギャップと補正係数値
との関係の一例を示す特性図である≦ １・・・センサ本体、２・・・センサ補助体、３・・・
被測定管体、１１−、　２１．　２２・・・磁心、１２
・・・励磁コイル、１３・・・補正コイル、２３・・・
検出コイル、２５・・・ガイドビン、３３・・・検出値
補正回路、３５・・・演算回路。The figure shows an embodiment of the present invention, and FIG. 1a shows an embodiment of the present invention. b is a cross-sectional view and rear view showing the structure of the sensor of the fluid pressure detection device, FIG. 2 is a block diagram showing the configuration of the circuit part of the fluid pressure detection device, and FIG. 3 is an example of the relationship between detected power and oil pressure. 4 is a characteristic diagram showing an example of the relationship between the gap and the output voltage difference, and FIG. 5 is a characteristic diagram showing an example of the relationship between the gap and the correction coefficient value. Main body, 2... Sensor auxiliary body, 3...
Measured pipe body, 11-, 21. 22...Magnetic core, 12
...Exciting coil, 13...Correction coil, 23...
Detection coil, 25...Guide bin, 33...Detected value correction circuit, 35...Arithmetic circuit.

Claims

[Scope of utility model registration request]

a sensor body having at least an excitation coil wound around a magnetic core;
A magnetic circuit is formed between this magnetic core, the magnetic core of the sensor body, and the tube to be measured by bringing one end of the magnetic core, which is detachably attached to the sensor body, into contact with any circumferential surface of the tube to be measured. an excitation power supply circuit that applies excitation power to the excitation coil; and a detection device that is wound around either the magnetic core of the sensor body or the magnetic core of the sensor auxiliary body and detects resistance value information of the magnetic circuit. Based on the difference information between the coil, a correction coil that is drawn on the side where the detection coil is not wound among the magnetic cores of the sensor main body and the sensor auxiliary body, and each detection output of this correction coil and the detection coil. a correction circuit that corrects a detection output error of the detection coil due to a minute gap existing between each of the magnetic cores; and fluid pressure information in the pipe body to be measured based on the detection output of the detection coil corrected by the correction circuit. A fluid pressure detection device characterized by comprising a circuit for obtaining.