JPH0229997B2 - - Google Patents
Info
- Publication number
- JPH0229997B2 JPH0229997B2 JP58186370A JP18637083A JPH0229997B2 JP H0229997 B2 JPH0229997 B2 JP H0229997B2 JP 58186370 A JP58186370 A JP 58186370A JP 18637083 A JP18637083 A JP 18637083A JP H0229997 B2 JPH0229997 B2 JP H0229997B2
- Authority
- JP
- Japan
- Prior art keywords
- phase
- signal
- circuit
- peak
- metal
- 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.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 70
- 229910052751 metal Inorganic materials 0.000 claims description 70
- 238000001514 detection method Methods 0.000 claims description 54
- 239000000463 material Substances 0.000 claims description 18
- 230000008859 change Effects 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- -1 ferrous metals Chemical class 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 230000010363 phase shift Effects 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000015429 Mirabilis expansa Nutrition 0.000 description 1
- 244000294411 Mirabilis expansa Species 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 235000013536 miso Nutrition 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 235000013580 sausages Nutrition 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
- G01V3/105—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
- G01V3/107—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops using compensating coil or loop arrangements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Geophysics And Detection Of Objects (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58186370A JPS6078378A (ja) | 1983-10-05 | 1983-10-05 | 金属検出装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58186370A JPS6078378A (ja) | 1983-10-05 | 1983-10-05 | 金属検出装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6078378A JPS6078378A (ja) | 1985-05-04 |
| JPH0229997B2 true JPH0229997B2 (zh) | 1990-07-03 |
Family
ID=16187190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58186370A Granted JPS6078378A (ja) | 1983-10-05 | 1983-10-05 | 金属検出装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6078378A (zh) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4644286A (en) * | 1985-09-17 | 1987-02-17 | Allied Corporation | Article surveillance system receiver using synchronous demodulation and signal integration |
| JPH0518716Y2 (zh) * | 1987-08-07 | 1993-05-18 | ||
| JPS6454281A (en) * | 1987-08-25 | 1989-03-01 | Anritsu Corp | Metal detecting apparatus |
| JPH0619470B2 (ja) * | 1988-07-26 | 1994-03-16 | 大和製衡株式会社 | 金属等の異物混入検出方法および検出器 |
| JPH0619469B2 (ja) * | 1988-04-13 | 1994-03-16 | 大和製衡株式会社 | 金属等の異物混入検出器 |
| JPH0725735Y2 (ja) * | 1989-03-31 | 1995-06-07 | アンリツ株式会社 | 金属検出機 |
| JPH089653Y2 (ja) * | 1989-04-12 | 1996-03-21 | ティーディーケイ株式会社 | トナー検知用センサ回路 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57189084A (en) * | 1981-02-09 | 1982-11-20 | Gooring Kaa Ltd | Detector for metal |
| JPS5820944U (ja) * | 1981-08-01 | 1983-02-09 | 株式会社カ−メイト | 自動車用スキ−キャリア |
-
1983
- 1983-10-05 JP JP58186370A patent/JPS6078378A/ja active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57189084A (en) * | 1981-02-09 | 1982-11-20 | Gooring Kaa Ltd | Detector for metal |
| JPS5820944U (ja) * | 1981-08-01 | 1983-02-09 | 株式会社カ−メイト | 自動車用スキ−キャリア |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6078378A (ja) | 1985-05-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |