JPH0260866U - - Google Patents
Info
- Publication number
- JPH0260866U JPH0260866U JP13957188U JP13957188U JPH0260866U JP H0260866 U JPH0260866 U JP H0260866U JP 13957188 U JP13957188 U JP 13957188U JP 13957188 U JP13957188 U JP 13957188U JP H0260866 U JPH0260866 U JP H0260866U
- Authority
- JP
- Japan
- Prior art keywords
- phase difference
- magnetic sensor
- magnetic
- comparing
- detecting means
- 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
- 239000000696 magnetic material Substances 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 230000005284 excitation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Measuring Magnetic Variables (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
第１図はこの考案の基本構成を示すブロツク構
成図、第２図はこの考案に用いる磁気センサの一
例を示す構造図、第３図は磁性物質のＢ―Ｈ曲線
例を示す図、第４図Ａ〜Ｃ及び第５図Ａ〜Ｃはこ
の考案の作用を示す図、第６図はこの考案の一実
施例を示すブロツク構成図、第７図はその動作例
を示す波形図である。
１……発振手段、２……磁気センサ、３……位
相差検出手段、４……比較手段、５……記憶手段
、６……磁性物質、１００……発振器、１２０…
…積分器、１２１，１２２……コンパレータ。
Fig. 1 is a block configuration diagram showing the basic configuration of this invention, Fig. 2 is a structural diagram showing an example of a magnetic sensor used in this invention, Fig. 3 is a diagram showing an example of a BH curve of a magnetic material, and Fig. 4 is a diagram showing an example of a magnetic sensor used in this invention. FIGS. A to C and FIGS. 5A to C are diagrams showing the operation of this invention, FIG. 6 is a block diagram showing an embodiment of this invention, and FIG. 7 is a waveform diagram showing an example of its operation. DESCRIPTION OF SYMBOLS 1... Oscillation means, 2... Magnetic sensor, 3... Phase difference detection means, 4... Comparison means, 5... Memory means, 6... Magnetic substance, 100... Oscillator, 120...
...Integrator, 121, 122...Comparator.
Claims (1)
発振手段と、前記励磁信号と前記磁気センサの２
次コイルの出力信号の位相差を検出する位相差検
出手段と、この位相差検出手段の出力を所定値と
比較して前記磁気センサに対する磁性物質を識別
する比較手段とを具備したことを特徴とする磁性
物質識別装置。 oscillation means for supplying an excitation signal to a primary coil of a magnetic sensor;
The present invention is characterized by comprising: a phase difference detecting means for detecting a phase difference between the output signals of the secondary coil; and a comparing means for comparing the output of the phase difference detecting means with a predetermined value to identify the magnetic substance relative to the magnetic sensor. Magnetic material identification device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988139571U JPH0743650Y2 (en) | 1988-10-26 | 1988-10-26 | Magnetic substance identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988139571U JPH0743650Y2 (en) | 1988-10-26 | 1988-10-26 | Magnetic substance identification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0260866U true JPH0260866U (en) | 1990-05-07 |
| JPH0743650Y2 JPH0743650Y2 (en) | 1995-10-09 |
Family
ID=31402953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988139571U Expired - Lifetime JPH0743650Y2 (en) | 1988-10-26 | 1988-10-26 | Magnetic substance identification device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0743650Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6283965B2 (en) * | 2016-03-18 | 2018-02-28 | 長野県 | Inspection apparatus, inspection method, and non-contact sensor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4995694A (en) * | 1972-10-12 | 1974-09-11 | ||
| JPS533940A (en) * | 1976-07-01 | 1978-01-14 | Matsushita Electric Ind Co Ltd | Solid wires for welding |
-
1988
- 1988-10-26 JP JP1988139571U patent/JPH0743650Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4995694A (en) * | 1972-10-12 | 1974-09-11 | ||
| JPS533940A (en) * | 1976-07-01 | 1978-01-14 | Matsushita Electric Ind Co Ltd | Solid wires for welding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0743650Y2 (en) | 1995-10-09 |