FR2352305A1 - Electromagnetic field measurement system - uses ferrite rod sensor, LC detector circuit and Faraday cage - Google Patents

Electromagnetic field measurement system - uses ferrite rod sensor, LC detector circuit and Faraday cage

Info

Publication number
FR2352305A1
FR2352305A1 FR7615704A FR7615704A FR2352305A1 FR 2352305 A1 FR2352305 A1 FR 2352305A1 FR 7615704 A FR7615704 A FR 7615704A FR 7615704 A FR7615704 A FR 7615704A FR 2352305 A1 FR2352305 A1 FR 2352305A1
Authority
FR
France
Prior art keywords
cage
vector
ferrite rod
electromagnetic field
faraday cage
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
FR7615704A
Other languages
French (fr)
Other versions
FR2352305B3 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7615704A priority Critical patent/FR2352305A1/en
Publication of FR2352305A1 publication Critical patent/FR2352305A1/en
Application granted granted Critical
Publication of FR2352305B3 publication Critical patent/FR2352305B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/028—Electrodynamic magnetometers

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Radiation (AREA)

Abstract

The device described enables the vetor B of the electromagnetic field to be measured and is not affected by the vector E. The electrical circuits are enclosed in a conducting metallic cage, known as a Faraday cage, and this screen stem from the action of the vector E. The B vector is measured using a ferrite rod (1) which comes out of the Faraday Cage. The cage comprises two parts; the mobile part carrying the ferrite rod, while the fixed part contains the measurement apparatus. The two parts are electrically connected. The B vector induces electron spin vibration in the ferrite (1) and these vibrations propagate in the rod to the inside of the cage where they are detected by an LC oscillatory circuit (2, 3) tuned to the vibrational frequency of the B vector. Part of the inductance, L, (2) surrounds the ferrite rod inside the cage.
FR7615704A 1976-05-17 1976-05-17 Electromagnetic field measurement system - uses ferrite rod sensor, LC detector circuit and Faraday cage Granted FR2352305A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7615704A FR2352305A1 (en) 1976-05-17 1976-05-17 Electromagnetic field measurement system - uses ferrite rod sensor, LC detector circuit and Faraday cage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7615704A FR2352305A1 (en) 1976-05-17 1976-05-17 Electromagnetic field measurement system - uses ferrite rod sensor, LC detector circuit and Faraday cage

Publications (2)

Publication Number Publication Date
FR2352305A1 true FR2352305A1 (en) 1977-12-16
FR2352305B3 FR2352305B3 (en) 1979-02-16

Family

ID=9173570

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7615704A Granted FR2352305A1 (en) 1976-05-17 1976-05-17 Electromagnetic field measurement system - uses ferrite rod sensor, LC detector circuit and Faraday cage

Country Status (1)

Country Link
FR (1) FR2352305A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3509356A1 (en) * 1985-03-15 1989-08-10 Licentia Gmbh Method and arrangement for detecting electromagnetic waves
EP0536447A1 (en) * 1991-10-11 1993-04-14 Koninklijke Emballage Industrie Van Leer B.V. Exposure meter for use with induction heat sealing of containers
US6255815B1 (en) * 1998-08-20 2001-07-03 Neotonus, Inc. Magnetic field calibration device including housing with locator window
US6486664B1 (en) 1998-07-01 2002-11-26 Lepel Corp. Magnetic field exposure sensor and analysis system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3509356A1 (en) * 1985-03-15 1989-08-10 Licentia Gmbh Method and arrangement for detecting electromagnetic waves
EP0536447A1 (en) * 1991-10-11 1993-04-14 Koninklijke Emballage Industrie Van Leer B.V. Exposure meter for use with induction heat sealing of containers
WO1993007504A1 (en) * 1991-10-11 1993-04-15 Koninklijke Emballage Industrie Van Leer B.V. Exposure meter for use with induction heat sealing of containers
US5432437A (en) * 1991-10-11 1995-07-11 Koninklijke Emballage Industrie Van Leer B.V. Exposure meter for use with indiction heat sealing of containers
US6486664B1 (en) 1998-07-01 2002-11-26 Lepel Corp. Magnetic field exposure sensor and analysis system
US6255815B1 (en) * 1998-08-20 2001-07-03 Neotonus, Inc. Magnetic field calibration device including housing with locator window

Also Published As

Publication number Publication date
FR2352305B3 (en) 1979-02-16

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Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
DI Inadmissibility of an action of restoration