JPS5953292U - Metal detector self-diagnosis circuit - Google Patents
Metal detector self-diagnosis circuitInfo
- Publication number
- JPS5953292U JPS5953292U JP14716182U JP14716182U JPS5953292U JP S5953292 U JPS5953292 U JP S5953292U JP 14716182 U JP14716182 U JP 14716182U JP 14716182 U JP14716182 U JP 14716182U JP S5953292 U JPS5953292 U JP S5953292U
- Authority
- JP
- Japan
- Prior art keywords
- metal detector
- diagnosis circuit
- self
- alternating current
- electromagnetic field
- 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.)
- Granted
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
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
第１図は従来の金属検出器の一例を示す回路図、第２図
、第３図は第１図の回路の動作を説明するためのベクト
ル図、第４図、第５図は同じく第１図の回路の動作を説
明するための送、受信コイルの配置と出力波形を示す図
、第６図はこの考案の一実施例を示す構成略図、第７図
、第８図、第９図はそれぞれこの考案の他の実施例を示
す構成略図、第１０図はこの考案の応用例を示す構成略
図、第１１図は第１０図の応用例の動作説明のための要
部の波形図である。 、
図中、１は高周波電源、２は送信コイル、３ａ。
３ｂは受信コイル、４は検査ライン、５は位相調整器、
６は振幅調整器、７は増幅器、３ａ、 ３ｂは同期検
波器、９は移相器、１０．１２は閉ループ状の電気回路
、１１．１４はスイッチ、１３は直流電源である。
に工４□
（イ） ＭＦ＝−）−〜４
Ｐ！
３ａ ３ｂ
（ロ）−／で＼３．− 第５図
８日
ｂ
（ハ）□
へ
１２１゜
” ！ ３．１．：ユ
２ 第７図Fig. 1 is a circuit diagram showing an example of a conventional metal detector, Figs. 2 and 3 are vector diagrams for explaining the operation of the circuit in Fig. 1, and Figs. A diagram showing the arrangement of transmitting and receiving coils and output waveforms to explain the operation of the circuit shown in the figure, FIG. 6 is a schematic diagram of the configuration showing one embodiment of this invention, and FIGS. 7, 8, and 9 are FIG. 10 is a schematic configuration diagram showing another embodiment of this invention, FIG. 10 is a schematic diagram showing an application example of this invention, and FIG. 11 is a waveform diagram of the main part for explaining the operation of the application example of FIG. 10. . , In the figure, 1 is a high frequency power supply, 2 is a transmitting coil, and 3a. 3b is a receiving coil, 4 is an inspection line, 5 is a phase adjuster,
6 is an amplitude adjuster, 7 is an amplifier, 3a and 3b are synchronous detectors, 9 is a phase shifter, 10.12 is a closed loop electric circuit, 11.14 is a switch, and 13 is a DC power supply. Niwork 4□ (a) MF=-)-~4 P! 3a 3b (b) -/ in \3. - Fig. 5 8th b (c) □ 121°”! 3.1.: U2 Fig. 7
Claims (1)
電磁界内に被検査物が流れる検査ラインをはさんで設置
された２つの受信コイルと、この２つの受信コイルの両
川力信号の差の出力信号を前記交流信号と同期した信号
で同期検波する同期検波器とからなる金属検出器におい
て：前記受信コイルの少なくとも一力の前記送信コイル
と結合する電磁界内に、閉ループ状の電気回路を設けた
ことを特徴とする金属検出器の自己診断回路。A transmitting coil driven by an alternating current signal, two receiving coils installed across the inspection line in which the object to be inspected flows within the electromagnetic field of this transmitting coil, and the difference between the force signals of these two receiving coils. In a metal detector comprising a synchronous detector that synchronously detects an output signal with a signal synchronized with the alternating current signal: a closed-loop electrical circuit is provided in the electromagnetic field of the receiving coil coupled to at least one of the transmitting coils. A self-diagnosis circuit for a metal detector, characterized in that it is provided with a self-diagnosis circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14716182U JPS5953292U (en) | 1982-09-30 | 1982-09-30 | Metal detector self-diagnosis circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14716182U JPS5953292U (en) | 1982-09-30 | 1982-09-30 | Metal detector self-diagnosis circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5953292U true JPS5953292U (en) | 1984-04-07 |
| JPH0125347Y2 JPH0125347Y2 (en) | 1989-07-28 |
Family
ID=30327337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14716182U Granted JPS5953292U (en) | 1982-09-30 | 1982-09-30 | Metal detector self-diagnosis circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5953292U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6392571U (en) * | 1986-12-04 | 1988-06-15 | ||
| JP2011237278A (en) * | 2010-05-11 | 2011-11-24 | Eminet Co Ltd | Metal detector |
| JP2011237287A (en) * | 2010-05-11 | 2011-11-24 | Eminet Co Ltd | Metal detecting device |
| JP2012220382A (en) * | 2011-04-11 | 2012-11-12 | Toyohashi Univ Of Technology | Method for detecting magnetic metal foreign substance and apparatus therefor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7172135B2 (en) * | 2018-05-23 | 2022-11-16 | 株式会社島津製作所 | Magnetic inspection device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54123989A (en) * | 1978-03-17 | 1979-09-26 | Sumitomo Metal Ind | Method of inspecting sensitivity of magnetismmsensitive element of magnetic flaw detector |
-
1982
- 1982-09-30 JP JP14716182U patent/JPS5953292U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54123989A (en) * | 1978-03-17 | 1979-09-26 | Sumitomo Metal Ind | Method of inspecting sensitivity of magnetismmsensitive element of magnetic flaw detector |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6392571U (en) * | 1986-12-04 | 1988-06-15 | ||
| JP2011237278A (en) * | 2010-05-11 | 2011-11-24 | Eminet Co Ltd | Metal detector |
| JP2011237287A (en) * | 2010-05-11 | 2011-11-24 | Eminet Co Ltd | Metal detecting device |
| JP2012220382A (en) * | 2011-04-11 | 2012-11-12 | Toyohashi Univ Of Technology | Method for detecting magnetic metal foreign substance and apparatus therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0125347Y2 (en) | 1989-07-28 |
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