JPS56154687A - Minute-metal detector - Google Patents
Minute-metal detectorInfo
- Publication number
- JPS56154687A JPS56154687A JP5849680A JP5849680A JPS56154687A JP S56154687 A JPS56154687 A JP S56154687A JP 5849680 A JP5849680 A JP 5849680A JP 5849680 A JP5849680 A JP 5849680A JP S56154687 A JPS56154687 A JP S56154687A
- Authority
- JP
- Japan
- Prior art keywords
- detected
- change
- coil
- outputs
- coils
- 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
Links
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)
- Geophysics And Detection Of Objects (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5849680A JPS56154687A (en) | 1980-05-01 | 1980-05-01 | Minute-metal detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5849680A JPS56154687A (en) | 1980-05-01 | 1980-05-01 | Minute-metal detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56154687A true JPS56154687A (en) | 1981-11-30 |
Family
ID=13086023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5849680A Pending JPS56154687A (en) | 1980-05-01 | 1980-05-01 | Minute-metal detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56154687A (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6476605B1 (en) * | 1999-03-11 | 2002-11-05 | Csem Centre Suisse D'electronique Et De Microtechnique Sa | Inductive sensor for target parameter detection and magnetic image feature determination |
JP2017504784A (ja) * | 2013-10-22 | 2017-02-09 | クアルコム,インコーポレイテッド | 外来オブジェクト検出ループアレイ感度の向上のためのシステム、方法、および装置 |
US10295693B2 (en) | 2014-05-15 | 2019-05-21 | Witricity Corporation | Systems, methods, and apparatus for foreign object detection loop based on inductive thermal sensing |
US10302795B2 (en) | 2014-12-30 | 2019-05-28 | Witricity Corporation | Systems, methods, and apparatus for detecting ferromagnetic foreign objects in a predetermined space |
US10324215B2 (en) | 2014-12-30 | 2019-06-18 | Witricity Corporation | Systems, methods, and apparatus for detecting ferromagnetic foreign objects in a predetermined space |
-
1980
- 1980-05-01 JP JP5849680A patent/JPS56154687A/ja active Pending
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6476605B1 (en) * | 1999-03-11 | 2002-11-05 | Csem Centre Suisse D'electronique Et De Microtechnique Sa | Inductive sensor for target parameter detection and magnetic image feature determination |
JP2017504784A (ja) * | 2013-10-22 | 2017-02-09 | クアルコム,インコーポレイテッド | 外来オブジェクト検出ループアレイ感度の向上のためのシステム、方法、および装置 |
US10295693B2 (en) | 2014-05-15 | 2019-05-21 | Witricity Corporation | Systems, methods, and apparatus for foreign object detection loop based on inductive thermal sensing |
US10564307B2 (en) | 2014-05-15 | 2020-02-18 | Witricity Corporation | Systems, methods, and apparatus for foreign object detection loop based on inductive thermal sensing |
US10302795B2 (en) | 2014-12-30 | 2019-05-28 | Witricity Corporation | Systems, methods, and apparatus for detecting ferromagnetic foreign objects in a predetermined space |
US10324215B2 (en) | 2014-12-30 | 2019-06-18 | Witricity Corporation | Systems, methods, and apparatus for detecting ferromagnetic foreign objects in a predetermined space |
US10670764B2 (en) | 2014-12-30 | 2020-06-02 | Witricity Corporation | Systems, methods, and apparatus for detecting ferromagnetic foreign objects in a predetermined space |
US10739487B2 (en) | 2014-12-30 | 2020-08-11 | Witricity Corporation | Systems, methods, and apparatus for detecting ferromagnetic foreign objects in a predetermined space |
US11378711B2 (en) | 2014-12-30 | 2022-07-05 | Witricity Corporation | Systems, methods, and apparatus for detecting ferromagnetic foreign objects in a predetermined space |
US11719847B2 (en) | 2014-12-30 | 2023-08-08 | Witricity Corporation | Systems, methods, and apparatus for detecting ferromagnetic foreign objects in a predetermined space |
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