FR2419511A1 - Anti-tank mine detector - senses magnetic field variations for threshold circuit via amplifier and filter - Google Patents

Anti-tank mine detector - senses magnetic field variations for threshold circuit via amplifier and filter

Info

Publication number
FR2419511A1
FR2419511A1 FR7806943A FR7806943A FR2419511A1 FR 2419511 A1 FR2419511 A1 FR 2419511A1 FR 7806943 A FR7806943 A FR 7806943A FR 7806943 A FR7806943 A FR 7806943A FR 2419511 A1 FR2419511 A1 FR 2419511A1
Authority
FR
France
Prior art keywords
magnetic field
filter
field variations
threshold circuit
detector
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
Application number
FR7806943A
Other languages
French (fr)
Other versions
FR2419511B1 (en
Inventor
Jean-Pierre Tranin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telecommunications Radioelectriques et Telephoniques SA TRT
Original Assignee
Telecommunications Radioelectriques et Telephoniques SA TRT
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 Telecommunications Radioelectriques et Telephoniques SA TRT filed Critical Telecommunications Radioelectriques et Telephoniques SA TRT
Priority to FR7806943A priority Critical patent/FR2419511A1/en
Publication of FR2419511A1 publication Critical patent/FR2419511A1/en
Application granted granted Critical
Publication of FR2419511B1 publication Critical patent/FR2419511B1/fr
Granted legal-status Critical Current

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C11/00—Electric fuzes
    • F42C11/001—Electric circuits for fuzes characterised by the ammunition class or type
    • F42C11/007—Electric circuits for fuzes characterised by the ammunition class or type for land mines

Abstract

The metallic mass detector in anti tank mine senses magnetic field variations created when tank passes and is insensitive to earths magnetic field or field created by foreign body. The magnetic field variations are sensed by detector (1) with one winding (2) connected to transmitter (3). A second winding (4) is connected to input of amplifier (5) with selective band pass frequency response. A synchronous detector (6) has a filter (7) at output to eliminate dc component and is followed by threshold circuit (8) comprising two operational amplifiers (12, 13) in open loop. When signal level is outside the level given by reference voltages (14, 15) a voltage occurs at the output (9) to detonate mine.
FR7806943A 1978-03-10 1978-03-10 Anti-tank mine detector - senses magnetic field variations for threshold circuit via amplifier and filter Granted FR2419511A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7806943A FR2419511A1 (en) 1978-03-10 1978-03-10 Anti-tank mine detector - senses magnetic field variations for threshold circuit via amplifier and filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7806943A FR2419511A1 (en) 1978-03-10 1978-03-10 Anti-tank mine detector - senses magnetic field variations for threshold circuit via amplifier and filter

Publications (2)

Publication Number Publication Date
FR2419511A1 true FR2419511A1 (en) 1979-10-05
FR2419511B1 FR2419511B1 (en) 1981-12-11

Family

ID=9205619

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7806943A Granted FR2419511A1 (en) 1978-03-10 1978-03-10 Anti-tank mine detector - senses magnetic field variations for threshold circuit via amplifier and filter

Country Status (1)

Country Link
FR (1) FR2419511A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077605A2 (en) * 1981-10-15 1983-04-27 Brunswick Corporation Cue ball detection and separation assembly
FR2667952A1 (en) * 1990-10-15 1992-04-17 Plymouth Francaise Sa Device for detecting, identifying and tracking underground pipelines or other optically invisible objects

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2948847A (en) * 1957-05-03 1960-08-09 Welex Inc Electromagnetic conductivity detection
US3826973A (en) * 1973-01-10 1974-07-30 Benson R Electromagnetic gradiometer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2948847A (en) * 1957-05-03 1960-08-09 Welex Inc Electromagnetic conductivity detection
US3826973A (en) * 1973-01-10 1974-07-30 Benson R Electromagnetic gradiometer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077605A2 (en) * 1981-10-15 1983-04-27 Brunswick Corporation Cue ball detection and separation assembly
EP0077605A3 (en) * 1981-10-15 1984-08-15 Brunswick Corporation Cue ball detection and separation assembly
FR2667952A1 (en) * 1990-10-15 1992-04-17 Plymouth Francaise Sa Device for detecting, identifying and tracking underground pipelines or other optically invisible objects

Also Published As

Publication number Publication date
FR2419511B1 (en) 1981-12-11

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