CA2150582A1 - Method and Apparatus for Guiding a Driverless Vehicle Using a Sensor Tracking a Cable Emitting an Electromagnetic Field - Google Patents

Method and Apparatus for Guiding a Driverless Vehicle Using a Sensor Tracking a Cable Emitting an Electromagnetic Field

Info

Publication number
CA2150582A1
CA2150582A1 CA2150582A CA2150582A CA2150582A1 CA 2150582 A1 CA2150582 A1 CA 2150582A1 CA 2150582 A CA2150582 A CA 2150582A CA 2150582 A CA2150582 A CA 2150582A CA 2150582 A1 CA2150582 A1 CA 2150582A1
Authority
CA
Canada
Prior art keywords
coil
vehicle
guiding
electromagnetic field
horizontal
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
CA2150582A
Other languages
French (fr)
Other versions
CA2150582C (en
Inventor
Cornell W. Alofs
Ronald R. Drenth
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.)
Jervis B Webb Co
Original Assignee
Jervis B Webb Co
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 Jervis B Webb Co filed Critical Jervis B Webb Co
Priority to CA002150582A priority Critical patent/CA2150582C/en
Publication of CA2150582A1 publication Critical patent/CA2150582A1/en
Application granted granted Critical
Publication of CA2150582C publication Critical patent/CA2150582C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • G05D1/03—Control of position or course in two dimensions using near-field transmission systems, e.g. inductive-loop type

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)

Abstract

A method and apparatus for guiding a driverless vehicle along a path defined by a guide cable carrying a current in a horizontal road surface includes mounting a first coil, having a major coil axis, at +45 degrees relative to the horizontal on said vehicle, mounting a second coil, having a major coil axis, at -45 degrees relative to the horizontal on said vehicle such that the axes of said first and second coils intersect, sensing both the radial and circular field vectors of the electromagnetic field with each coil, comparing the magnitude of the radial vector with the magnitude of the circular vector for each coil whereby the lateral position of the intersection point of the axes of the coils is determined relative to the guide cable to indicate the lateral displacement of the vehicle relative to said path, and using the displacement information in the vehicle steering system.
CA002150582A 1995-05-31 1995-05-31 Method and apparatus for guiding a driverless vehicle using a sensor tracking a cable emitting an electromagnetic field Expired - Fee Related CA2150582C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002150582A CA2150582C (en) 1995-05-31 1995-05-31 Method and apparatus for guiding a driverless vehicle using a sensor tracking a cable emitting an electromagnetic field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002150582A CA2150582C (en) 1995-05-31 1995-05-31 Method and apparatus for guiding a driverless vehicle using a sensor tracking a cable emitting an electromagnetic field

Publications (2)

Publication Number Publication Date
CA2150582A1 true CA2150582A1 (en) 1996-12-01
CA2150582C CA2150582C (en) 1998-07-07

Family

ID=4155954

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002150582A Expired - Fee Related CA2150582C (en) 1995-05-31 1995-05-31 Method and apparatus for guiding a driverless vehicle using a sensor tracking a cable emitting an electromagnetic field

Country Status (1)

Country Link
CA (1) CA2150582C (en)

Also Published As

Publication number Publication date
CA2150582C (en) 1998-07-07

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Effective date: 20130531