JPS58180437U

JPS58180437U - Temperature detection device for rotating body

Info

Publication number: JPS58180437U
Application number: JP7761282U
Authority: JP
Inventors: 根本　道夫; 憲太郎堀内; 雅彦佐藤
Original assignee: 東北金属工業株式会社
Priority date: 1982-05-28
Filing date: 1982-05-28
Publication date: 1983-12-02
Also published as: JPS634986Y2

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]

第１図は回転体の従来の温度検出装置の構成図、第２図
は本考案の一実施例を示し、ａは斜視図、ｂは端面図、
第３図は本考案に用いられる磁気検出器の構成図、第４
図はその信号出力を示す特性図、第５図は、等速回転の
場合のパルス出力を示し、ａは回転数検出パルス、ｂは
被検出温度がキュリ一点Ｔ□未満の場合、Ｃは同じくキ
ュリ一点Ｔ１以上Ｔ２未満の場合、ｄは同じくキュリ一
点１２以上の場合であり、第６図は、温度検出用ディジ
タル回路の一例のブロック図である。１．９；回転体、２．　１１．　１２；感温磁性体、３
．１３；永久磁石、４；検出コイル、５；信号増巾用ア
ンプ、６；オシロスコープ、７；同期信号発生器、１４
；磁極片、１５；磁気抵抗素子、１６；磁気検出器。Fig. 1 is a configuration diagram of a conventional temperature detection device for a rotating body, Fig. 2 shows an embodiment of the present invention, a is a perspective view, b is an end view,
Figure 3 is a configuration diagram of the magnetic detector used in the present invention;
The figure is a characteristic diagram showing the signal output, and Figure 5 shows the pulse output in the case of constant speed rotation. In the case where the Curie point is T1 or more and less than T2, d is also the case where the Curie point is 12 or more, and FIG. 6 is a block diagram of an example of a digital circuit for temperature detection. 1.9; rotating body, 2. 11. 12; Temperature-sensitive magnetic material, 3
．． 13; Permanent magnet, 4; Detection coil, 5; Signal amplification amplifier, 6; Oscilloscope, 7; Synchronous signal generator, 14
; magnetic pole piece, 15; magnetoresistive element, 16; magnetic detector.

Claims

[Scope of utility model registration request]

In a device for detecting temperature using a rotation method having a non-magnetic surface, a plurality of pieces of temperature-sensitive magnetic material having different Curie points are arranged at intervals on one circumference of the surface of the rotating body. At the same time, a piece of ferromagnetic material having a temperature sufficiently higher than the detection temperature is arranged on the other diurnal axis of the surface of the rotating body in one-to-one correspondence with the piece of temperature-sensitive magnetic material, and the magnetic pole of the bar-shaped magnet is A plurality of detectors each having a magnetoresistive element mounted on a surface via magnetic pole pieces, the magnetoresistive elements facing each other on the one circumference and the other diurnal circumference of the surface of the rotating body. 1. A temperature detection device for a rotating body, characterized in that each temperature detection device is independently fixedly arranged in the rotation body.