FR2329008A1 - Cable or pipeline location and or guidance system - uses two solenoid probes arranged on same horizontal axis with signals from probes fed to sum and difference circuits - Google Patents

Cable or pipeline location and or guidance system - uses two solenoid probes arranged on same horizontal axis with signals from probes fed to sum and difference circuits

Info

Publication number
FR2329008A1
FR2329008A1 FR7532629A FR7532629A FR2329008A1 FR 2329008 A1 FR2329008 A1 FR 2329008A1 FR 7532629 A FR7532629 A FR 7532629A FR 7532629 A FR7532629 A FR 7532629A FR 2329008 A1 FR2329008 A1 FR 2329008A1
Authority
FR
France
Prior art keywords
probes
solenoid
whose
guidance system
vehicle
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
FR7532629A
Other languages
French (fr)
Other versions
FR2329008B1 (en
Inventor
Jean Beckert
Jacques Baillard
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.)
Etat Francais
Original Assignee
Etat Francais
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 Etat Francais filed Critical Etat Francais
Priority to FR7532629A priority Critical patent/FR2329008A1/en
Publication of FR2329008A1 publication Critical patent/FR2329008A1/en
Application granted granted Critical
Publication of FR2329008B1 publication Critical patent/FR2329008B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • G05D1/02—Control of position or course in two dimensions
    • G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
    • G05D1/0259—Control of position or course in two dimensions specially adapted to land vehicles using magnetic or electromagnetic means
    • G05D1/0265—Control of position or course in two dimensions specially adapted to land vehicles using magnetic or electromagnetic means using buried wires

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

The guidance system is carried in a vehicle (ground or air borne) at a predetermined height above a horizontal conductor. A low frequency alternating current being passed through the conductor. The system uses a series connected measuring circuit (111,112,13,15,17) tuned to the low frequency, whose probe (11) is a cored solenoid (111) whose axis is perpendicular to the movement of the vehicle or moving body. Other components of the series circuit are an active passband filter (15) and a detector (13) whose output is a continuous voltage of valve proportional to the amplitude of the horizontal component of the magnetic field at each point of measurement. The system uses two such series connected measuring circuits whose probes (11,21) are arranged horizontally along the same axis. Their common axis being perpendicular to the direction of movement of the vehicle.
FR7532629A 1975-10-24 1975-10-24 Cable or pipeline location and or guidance system - uses two solenoid probes arranged on same horizontal axis with signals from probes fed to sum and difference circuits Granted FR2329008A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7532629A FR2329008A1 (en) 1975-10-24 1975-10-24 Cable or pipeline location and or guidance system - uses two solenoid probes arranged on same horizontal axis with signals from probes fed to sum and difference circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7532629A FR2329008A1 (en) 1975-10-24 1975-10-24 Cable or pipeline location and or guidance system - uses two solenoid probes arranged on same horizontal axis with signals from probes fed to sum and difference circuits

Publications (2)

Publication Number Publication Date
FR2329008A1 true FR2329008A1 (en) 1977-05-20
FR2329008B1 FR2329008B1 (en) 1978-06-23

Family

ID=9161630

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7532629A Granted FR2329008A1 (en) 1975-10-24 1975-10-24 Cable or pipeline location and or guidance system - uses two solenoid probes arranged on same horizontal axis with signals from probes fed to sum and difference circuits

Country Status (1)

Country Link
FR (1) FR2329008A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4295095A (en) * 1979-01-29 1981-10-13 British Gas Corporation Apparatus and method for detecting the location of metallic objects having alternating current passing therethrough
US4520317A (en) * 1980-07-31 1985-05-28 Metrotech, Inc. Apparatus including a pair of automatic gain controlled amplifiers for determining the lateral direction to a concealed conductive object
FR2645980A1 (en) * 1989-04-14 1990-10-19 Alsthom Gec DEVICE FOR GUIDING VEHICLES ON A NON-MATERIALIZED ROAD
US5136225A (en) * 1989-04-14 1992-08-04 Gec Alsthom Sa Device for guiding vehicles on a virtual track

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1908294A1 (en) * 1969-02-19 1970-09-10 Steuerungstechn Gmbh Ges Fuer Arrangement for guiding a self-driving vehicle on a prescribed driving track

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1908294A1 (en) * 1969-02-19 1970-09-10 Steuerungstechn Gmbh Ges Fuer Arrangement for guiding a self-driving vehicle on a prescribed driving track

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4295095A (en) * 1979-01-29 1981-10-13 British Gas Corporation Apparatus and method for detecting the location of metallic objects having alternating current passing therethrough
US4520317A (en) * 1980-07-31 1985-05-28 Metrotech, Inc. Apparatus including a pair of automatic gain controlled amplifiers for determining the lateral direction to a concealed conductive object
FR2645980A1 (en) * 1989-04-14 1990-10-19 Alsthom Gec DEVICE FOR GUIDING VEHICLES ON A NON-MATERIALIZED ROAD
EP0396918A1 (en) * 1989-04-14 1990-11-14 Gec Alsthom Sa Device for guiding vehicles without ground rail
US5136225A (en) * 1989-04-14 1992-08-04 Gec Alsthom Sa Device for guiding vehicles on a virtual track

Also Published As

Publication number Publication date
FR2329008B1 (en) 1978-06-23

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Legal Events

Date Code Title Description
ST Notification of lapse