JPS5884578U - High frequency magnetic field loop coil metal sensor - Google Patents

High frequency magnetic field loop coil metal sensor

Info

Publication number
JPS5884578U
JPS5884578U JP17946881U JP17946881U JPS5884578U JP S5884578 U JPS5884578 U JP S5884578U JP 17946881 U JP17946881 U JP 17946881U JP 17946881 U JP17946881 U JP 17946881U JP S5884578 U JPS5884578 U JP S5884578U
Authority
JP
Japan
Prior art keywords
magnetic field
metal sensor
high frequency
frequency magnetic
loop coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17946881U
Other languages
Japanese (ja)
Inventor
鈴木　十士
Original Assignee
システム・アプリケ−シヨンズ・プロダクト株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by システム・アプリケ−シヨンズ・プロダクト株式会社 filed Critical システム・アプリケ−シヨンズ・プロダクト株式会社
Priority to JP17946881U priority Critical patent/JPS5884578U/en
Publication of JPS5884578U publication Critical patent/JPS5884578U/en
Pending legal-status Critical Current

Links

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

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案実施例のブロック配線図である。 １：コイル、２：コンデンサ、３：発振器８：カウンタ
ー、９：第１ラッチ回路、１０：第２ラッチ回路、１１
：タイミング回路。FIG. 1 is a block wiring diagram of an embodiment of the present invention. 1: Coil, 2: Capacitor, 3: Oscillator 8: Counter, 9: First latch circuit, 10: Second latch circuit, 11
: Timing circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 検出すべき金属に接近可能設けられるコイルとこのコイ
ルに接続されたコンデンサとからなる共振回路と、この
共振回路を励磁する発振器と、この発振器の周波数と共
振周波数に追跡させるフェーズ・ロックド・ループと、
発振器の出力波の周波数の変化を計数し、その変化が所
定値以上に達したときに出力信号を出す周波数変化検知
回路とよりなることを特徴とする金属センサー。A resonant circuit consisting of a coil provided so as to be accessible to the metal to be detected and a capacitor connected to this coil, an oscillator that excites this resonant circuit, and a phase-locked loop that tracks the frequency of this oscillator and the resonant frequency. ,
A metal sensor comprising a frequency change detection circuit that counts changes in the frequency of an output wave from an oscillator and outputs an output signal when the change reaches a predetermined value or more.
JP17946881U 1981-12-03 1981-12-03 High frequency magnetic field loop coil metal sensor Pending JPS5884578U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17946881U JPS5884578U (en) 1981-12-03 1981-12-03 High frequency magnetic field loop coil metal sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17946881U JPS5884578U (en) 1981-12-03 1981-12-03 High frequency magnetic field loop coil metal sensor

Publications (1)

Publication Number Publication Date
JPS5884578U true JPS5884578U (en) 1983-06-08

Family

ID=29975192

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17946881U Pending JPS5884578U (en) 1981-12-03 1981-12-03 High frequency magnetic field loop coil metal sensor

Country Status (1)

Country Link
JP (1) JPS5884578U (en)

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