US3786411A - Device for detecting location of a movable body - Google Patents

Device for detecting location of a movable body Download PDF

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Publication number
US3786411A
US3786411A US00202337A US3786411DA US3786411A US 3786411 A US3786411 A US 3786411A US 00202337 A US00202337 A US 00202337A US 3786411D A US3786411D A US 3786411DA US 3786411 A US3786411 A US 3786411A
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US
United States
Prior art keywords
moving body
conductor
conductor pairs
location
path
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.)
Expired - Lifetime
Application number
US00202337A
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English (en)
Inventor
N Kurauchi
S Hiraoka
K Yoshida
M Ohmori
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.)
Sumitomo Electric Industries Ltd
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Sumitomo Electric Industries Ltd
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Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Application granted granted Critical
Publication of US3786411A publication Critical patent/US3786411A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/025—Absolute localisation, e.g. providing geodetic coordinates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains

Definitions

  • ABSTRACT A device for detecting the location of a moving body comprising an antenna or antennae provided on the moving body.
  • a fundamental and a plurality of other conductor pairs extend in parallel along the path of the moving body.
  • Each of the conductor pairs includes portions in which the coupling between the conductor pair and the antenna is changed periodically.
  • the changing period of any one of the other conductor pairs is selected as an integer fraction of the changing period of the fundamental conductor pair, so that any region along the length of the path is coded in accordance with a binary code.
  • a ground station is coupled with all of the conductor pairs, whereby the location of the moving body in whatever coded region can be detected from the ground station or the moving body 'when an electric signal is transmitted from the antenna, or when one or a plurality of signals are sup plied from the ground station to the conductor pairs.
  • a line for detecting the location of the moving body (1) A line for detecting the location of the moving body.
  • This invention relates to the former line and associated devices thereto.
  • a primary object of the present invention is to provide a device for detecting the location of a moving body, wherein the above described drawbacks of the conventional devices can be substantially eliminated.
  • Another object of the invention is to provide a device for detecting the location of a moving body, which includes a locating unit disposed on the ground whereby the location of the moving body can be determined with high precision without errors due to the wear of the wheel or slip thereof.
  • Still another object of the invention is to provide a device for detecting the location of a moving body, whereby the location can be detected either on the moving body or on the ground without requiring any additional equipment.
  • g I 'A further object of the invention is to provide a de vice for detecting the location of a moving body, wherein a locating unit disposed on the ground can also be employed for the purpose of data transmission.
  • An additional object of the present invention is to provide a device for locating a moving body, wherein the interference noise introduced from outside can be substantially eliminated.
  • a device for detecting the location of a moving body comprising an antenna provided on the moving body.
  • a fundamental and a plurality of other conductive pairs extend in parallel along the path of the moving body.
  • Each of the conductor pairs includes portions in which the coupling between the conductor pair and the antenna is changed periodically.
  • the changing period of any one of the conductor pairs is selected as an integer fraction of the changing period of the funda mental conductor pair, so that any region along the length of the path is coded in accordance with the binary system.
  • a ground station is coupled with all of the conductor pairs, whereby the location of the moving body in any coded region can be detected by a conventional binary decoder at the ground station when an electric signal is transmitted from the antenna.
  • the objects can also be achieved by another device for detecting the location of a moving body, comprising an antenna provided on the moving body.
  • a fundamental and a plurality of other conductor pairs extend in parallel along the path of the moving body.
  • Each of the conductor pairs includes portions in which the coupling between the conductor pair and the antenna is changed periodically.
  • the changing period of any one of the conductor pairs is selected as an integer fraction of the changing period of the fundamental conductor pair, so that any region along the length of the path is coded in accordance with the binary system.
  • a ground station is coupled to all of the conductor pairs, whereby the location of the moving body in whatever coded region can be detected on the moving body through the antenna by conventional frequency discriminator and binary decoder means when signals having different frequencies aresupplied from the ground station to the conductor pairs.
  • the objects can be achieved by a device for detecting thelocation of a moving body, which comprises a plurality of antennae of a completely isolated type located on the moving body.
  • a fundamental and a plurality of other conductor pairs are constructed in the similar manner as described above, so that any region along the length of the path is coded in accordance with a binary code.
  • a ground station is coupled to all of the conductor pairs, whereby when an electric signal is applied to all of said conductor pairs, the location of the moving body can be detected on the moving body through conventional binary decoders and the plurality of antennae receiving coded signals corresponding to the located region of the moving body.
  • FIG. 1 is a perspective view, in schematic form, of a conventional device for detecting the location of a moving body wherein a switch and markers consisting of iron pieces are employed.
  • FIG. 2 is a schematic diagram showing the basic construction of a system for detecting the location of a moving body according to the present invention.
  • FIG. 3 is a diagram showing the variation of the output levels obtained from the system for detecting the location of a moving body shown in FIG. 2.
  • FIG. 1 shows a locating device of a moving body employing a switch and markers.
  • a moving body 1 running along a railway bears a switch 2 which generates an electric pulse each time when the switch 2 is brought into the vicinity of each of the markers 3 consisting of an iron piece.
  • the electric signal generated by the switch 2 is to be detected at a station on the ground, a separate line is required to transmit the signal from the moving body 1 to a station on the ground (not shown).
  • the installation cost of locating the moving body is very high.
  • FIG. 2 shows the basic system for locating a moving body in accordance with the present invention.
  • a number of pairs of conductors 14,, 14 14 are used, each consisting of a pair of conductors transposed between each other at a predetermined interval.
  • Each of the conductor pairs 14,, 14 14, corresponds to one unit position in the binary system. That is, the repetition periods of the conductor pair 14, and the conductor pair 14, are in a ratio of 2:1, and one complete period of 14, can be included in the one-half period of the 14,',.
  • antennae 15,, 15 15, are shown mounted on the moving body (not shown).
  • a receiving station 16 is located on the ground.
  • 16,, 16 indicate the signal levels received at the ground station 16 along the conductor pairs 14,, 14 respectively. If it is assumed that, for instance, a portion producing a signal such as the region 17, or 17 along the signal level 16, corresponds to 0 of a binary system and another portion 17 producing no signal corresponds to 1 of the binary system, any region along the conductor pair 14 can be identified by 0" or 1.” The same condition is applied for the conductor pairs 14,, 14 so that any region along the path of the moving body can be identified by a combination of binary codes such as (0, 0, 0) which corresponds to the region 17,. Likewise, the region 17 can be identified by the combination of binary codes (0, 0, 1), and the region 17,, can be identified by the binary codes (0, 1, 0). From these relations, the location in whatever region of the moving body along the path can be easily identified at the ground station from the received signal levels along the conductor pairs.
  • the reason the conductor pairs are transposed as described above is that the two consecutive portions producing a signal level (broadly spaced apart portions) along a conductor pair are thereby rendered to produce a signals of different polarity, i.e., a degree phase difference so that the mutual interference between any two conductor pairs is thereby minimized and the independent nature of each conductor pair is assured.
  • a signal is emitted from the antennae on the moving body, and the location of the moving body has been detected at the ground station.
  • the location of the moving body can be detected on the moving body itself.
  • each of the conductor pairs 14,, 14 may be applied with different signals having different frequencies, and the outputs therefrom may be received by one antenna provided on the moving body. The outputs thus received are thereafter divided into different frequency components and the binary codes designating the location of the moving body can be obtained as described above.
  • the same signal may be applied to the conductor pairs 14,, 14 from the ground station, and the output signals transmitted along the conductor pairs may be received through a plurality of antennae provided on the moving body so that the above described coded region can be detected on the moving body.
  • the antennae must be so arranged that each antenna is coupled with each of the conductor pairs and the cross-couplingtherebetween should be minimiied.
  • said antenna means being electrically coupled to all of said conductor pairs wherein the coupling between said antenna means and each of said conductor pairs is changed periodically along the path of said movable body and the period of change for each conductor pairis a negative integer power of two of the period of said fundamental conductor pair according to a specific parallel binary code corresponding to a region along the path of said movable body, whereby the specific parallel binary code is detected in accordance with the coupling between said antenna means and all of said conductor pairs; and (1. ground station means coupled to all of said conductor pairs. 2. The system as set forth in claim 1 wherein said antenna means transmits a signal to all of said conductor pairs and said ground station means receives the signal transmitted by said conductor pairs and thereby produces a signal indicative of the location of said moving body.
  • ground station means transmits a signal over each of said conductor pairs wherein the signal transmitted over each conductor pair is of a different frequency and wherein said antenna means receives all-of said signals and thereby produces asignal in said moving body indicative of the location of said moving body along said path.
  • said ground station means transmits a signal over each of said conductor pairs and wherein said antenna means includes a plurality of antennae each of said antennae corresponding to one of said conductor pairs and each of said antennae being electrically isolated from the others of said antennae and the non-corresponding conductor pairs, wherein a signal is produced in said moving body indicative of the location of said moving body along said path.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Near-Field Transmission Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Control And Safety Of Cranes (AREA)
  • Traffic Control Systems (AREA)
US00202337A 1970-11-26 1971-11-26 Device for detecting location of a movable body Expired - Lifetime US3786411A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45104586A JPS5112882B1 (ko) 1970-11-26 1970-11-26

Publications (1)

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US3786411A true US3786411A (en) 1974-01-15

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ID=14384525

Family Applications (1)

Application Number Title Priority Date Filing Date
US00202337A Expired - Lifetime US3786411A (en) 1970-11-26 1971-11-26 Device for detecting location of a movable body

Country Status (5)

Country Link
US (1) US3786411A (ko)
JP (1) JPS5112882B1 (ko)
DE (1) DE2158790A1 (ko)
FR (1) FR2120728A5 (ko)
GB (1) GB1374100A (ko)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877666A (en) * 1973-02-07 1975-04-15 Japan National Railway Method for the continuous detection of vehicle position
US3906436A (en) * 1973-02-08 1975-09-16 Sumitomo Electric Industries Detection system for the location of moving objects
US4218671A (en) * 1977-10-10 1980-08-19 Coal Industry (Patents) Limited Mine cage position describer
US4330830A (en) * 1979-11-27 1982-05-18 Westinghouse Electric Corp. Transit vehicle control apparatus and method
US5044634A (en) * 1988-03-21 1991-09-03 Yardmark, Inc. Golf information system
US5326095A (en) * 1988-03-21 1994-07-05 Yardmark, Inc. Golf information system
US5592158A (en) * 1993-11-23 1997-01-07 Gec Alsthom Transport Sa Initialization beacon for initializing a stationary vehicle
US5685786A (en) * 1994-05-11 1997-11-11 Yardmark, Inc. Passive golf information system and method
US5772534A (en) * 1992-09-09 1998-06-30 Dudley; Douglas P. Satellite enhanced golf information system
US6011508A (en) * 1997-10-31 2000-01-04 Magnemotion, Inc. Accurate position-sensing and communications for guideway operated vehicles
US6101952A (en) * 1997-12-24 2000-08-15 Magnemotion, Inc. Vehicle guidance and switching via magnetic forces
US20030236601A1 (en) * 2002-03-18 2003-12-25 Club Car, Inc. Control and diagnostic system for vehicles
US6693562B2 (en) * 2001-01-22 2004-02-17 Alstom System and a method for locating a rail vehicle at points along a rail track equipped with beacons and an antenna adapted to be fitted to the system
US20040119358A1 (en) * 2001-10-01 2004-06-24 Thornton Richard D. Suspending, guiding and propelling vehicles using magnetic forces
US6781524B1 (en) 2000-03-17 2004-08-24 Magnemotion, Inc. Passive position-sensing and communications for vehicles on a pathway
US6917136B2 (en) 2001-10-01 2005-07-12 Magnemotion, Inc. Synchronous machine design and manufacturing
US20050263369A1 (en) * 2004-05-07 2005-12-01 Magnemotion, Inc. Three-dimensional motion using single-pathway based actuators
US20070044676A1 (en) * 2005-07-22 2007-03-01 Magnemotion Inc. Guideway activated magnetic switching of vehicles
US7684017B2 (en) 2006-10-26 2010-03-23 Callaway Golf Company Laser range finder for use on a golf course
US20110234451A1 (en) * 2008-11-28 2011-09-29 Siemens Aktiengesellschaft Method and device for distance measurement
US8483895B1 (en) 2009-02-25 2013-07-09 James J. Beregi Transportation system, system components and process
US9346371B2 (en) 2009-01-23 2016-05-24 Magnemotion, Inc. Transport system powered by short block linear synchronous motors
US9771000B2 (en) 2009-01-23 2017-09-26 Magnemotion, Inc. Short block linear synchronous motors and switching mechanisms
US9802507B2 (en) 2013-09-21 2017-10-31 Magnemotion, Inc. Linear motor transport for packaging and other uses

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222902B (en) * 1988-09-16 1992-07-22 Gec General Signal Ltd Railway vehicle location system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2531498A (en) * 1947-02-20 1950-11-28 Union Switch & Signal Co Wayside station line coupling means for train communication systems
US3072899A (en) * 1960-02-15 1963-01-08 Gen Precision Inc Remote interrogator-responder signal-ling system communications channel apparatus
US3327111A (en) * 1964-10-21 1967-06-20 Int Standard Electric Corp System for supervision of vehicles along a route
DE1455381A1 (de) * 1964-07-14 1969-01-23 Licentia Gmbh Verfahren zur Zugortung
US3527897A (en) * 1967-03-20 1970-09-08 Sumitomo Electric Industries Induction radio system for vehicles
GB1211654A (en) * 1968-02-21 1970-11-11 Acec Method of and apparatus for measuring the distance travelled by a vehicle having a guided path of travel
US3576524A (en) * 1967-06-26 1971-04-27 British Railways Board Systems for transmitting information to moving trains
US3636508A (en) * 1969-02-21 1972-01-18 British Railways Board Systems for transmitting information between a railway track and moving train

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2531498A (en) * 1947-02-20 1950-11-28 Union Switch & Signal Co Wayside station line coupling means for train communication systems
US3072899A (en) * 1960-02-15 1963-01-08 Gen Precision Inc Remote interrogator-responder signal-ling system communications channel apparatus
DE1455381A1 (de) * 1964-07-14 1969-01-23 Licentia Gmbh Verfahren zur Zugortung
US3327111A (en) * 1964-10-21 1967-06-20 Int Standard Electric Corp System for supervision of vehicles along a route
US3527897A (en) * 1967-03-20 1970-09-08 Sumitomo Electric Industries Induction radio system for vehicles
US3576524A (en) * 1967-06-26 1971-04-27 British Railways Board Systems for transmitting information to moving trains
GB1211654A (en) * 1968-02-21 1970-11-11 Acec Method of and apparatus for measuring the distance travelled by a vehicle having a guided path of travel
US3636508A (en) * 1969-02-21 1972-01-18 British Railways Board Systems for transmitting information between a railway track and moving train

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877666A (en) * 1973-02-07 1975-04-15 Japan National Railway Method for the continuous detection of vehicle position
US3906436A (en) * 1973-02-08 1975-09-16 Sumitomo Electric Industries Detection system for the location of moving objects
US4218671A (en) * 1977-10-10 1980-08-19 Coal Industry (Patents) Limited Mine cage position describer
US4330830A (en) * 1979-11-27 1982-05-18 Westinghouse Electric Corp. Transit vehicle control apparatus and method
US5044634A (en) * 1988-03-21 1991-09-03 Yardmark, Inc. Golf information system
US5326095A (en) * 1988-03-21 1994-07-05 Yardmark, Inc. Golf information system
US5772534A (en) * 1992-09-09 1998-06-30 Dudley; Douglas P. Satellite enhanced golf information system
US5592158A (en) * 1993-11-23 1997-01-07 Gec Alsthom Transport Sa Initialization beacon for initializing a stationary vehicle
US5685786A (en) * 1994-05-11 1997-11-11 Yardmark, Inc. Passive golf information system and method
US6011508A (en) * 1997-10-31 2000-01-04 Magnemotion, Inc. Accurate position-sensing and communications for guideway operated vehicles
US6101952A (en) * 1997-12-24 2000-08-15 Magnemotion, Inc. Vehicle guidance and switching via magnetic forces
US6781524B1 (en) 2000-03-17 2004-08-24 Magnemotion, Inc. Passive position-sensing and communications for vehicles on a pathway
US6693562B2 (en) * 2001-01-22 2004-02-17 Alstom System and a method for locating a rail vehicle at points along a rail track equipped with beacons and an antenna adapted to be fitted to the system
US20050242675A1 (en) * 2001-10-01 2005-11-03 Magnemotion, Inc. Synchronous machine design and manufacturing
US6917136B2 (en) 2001-10-01 2005-07-12 Magnemotion, Inc. Synchronous machine design and manufacturing
US6983701B2 (en) 2001-10-01 2006-01-10 Magnemotion, Inc. Suspending, guiding and propelling vehicles using magnetic forces
US20060130699A1 (en) * 2001-10-01 2006-06-22 Magnemotion, Inc. Suspending, guiding and propelling vehicles using magnetic forces
US7448327B2 (en) 2001-10-01 2008-11-11 Magnemotion, Inc. Suspending, guiding and propelling vehicles using magnetic forces
US7538469B2 (en) 2001-10-01 2009-05-26 Magnemotion, Inc. Synchronous machine design and manufacturing
US20040119358A1 (en) * 2001-10-01 2004-06-24 Thornton Richard D. Suspending, guiding and propelling vehicles using magnetic forces
US20030236601A1 (en) * 2002-03-18 2003-12-25 Club Car, Inc. Control and diagnostic system for vehicles
US7926644B2 (en) 2004-05-07 2011-04-19 Magnemotion, Inc. Three-dimensional motion using single-pathway based actuators
US20050263369A1 (en) * 2004-05-07 2005-12-01 Magnemotion, Inc. Three-dimensional motion using single-pathway based actuators
US7458454B2 (en) 2004-05-07 2008-12-02 Magnemotion, Inc. Three-dimensional motion using single-pathway based actuators
US20070044676A1 (en) * 2005-07-22 2007-03-01 Magnemotion Inc. Guideway activated magnetic switching of vehicles
US7684017B2 (en) 2006-10-26 2010-03-23 Callaway Golf Company Laser range finder for use on a golf course
US20100177298A1 (en) * 2006-10-26 2010-07-15 Callaway Golf Company laser range finder for use on a golf course
US8279417B2 (en) 2006-10-26 2012-10-02 Callaway Golf Company Laser range finder for use on a golf course
US20110234451A1 (en) * 2008-11-28 2011-09-29 Siemens Aktiengesellschaft Method and device for distance measurement
US9346371B2 (en) 2009-01-23 2016-05-24 Magnemotion, Inc. Transport system powered by short block linear synchronous motors
US9771000B2 (en) 2009-01-23 2017-09-26 Magnemotion, Inc. Short block linear synchronous motors and switching mechanisms
US10112777B2 (en) 2009-01-23 2018-10-30 Magnemotion, Inc. Transport system powered by short block linear synchronous motors
US8483895B1 (en) 2009-02-25 2013-07-09 James J. Beregi Transportation system, system components and process
US9802507B2 (en) 2013-09-21 2017-10-31 Magnemotion, Inc. Linear motor transport for packaging and other uses

Also Published As

Publication number Publication date
GB1374100A (en) 1974-11-13
JPS5112882B1 (ko) 1976-04-23
FR2120728A5 (ko) 1972-08-18
DE2158790A1 (de) 1972-05-31

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