US3636508A - Systems for transmitting information between a railway track and moving train - Google Patents

Systems for transmitting information between a railway track and moving train Download PDF

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Publication number
US3636508A
US3636508A US12360A US3636508DA US3636508A US 3636508 A US3636508 A US 3636508A US 12360 A US12360 A US 12360A US 3636508D A US3636508D A US 3636508DA US 3636508 A US3636508 A US 3636508A
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United States
Prior art keywords
loop
transmitting
receiving
phase
station
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Expired - Lifetime
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US12360A
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English (en)
Inventor
Harry Heggie Ogilvy
Clive Valentine Smith
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British Railways Board
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British Railways Board
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/16—Continuous control along the route
    • B61L3/22—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation

Definitions

  • An additional bit of information can be derived from each coil by utilizing the flux perpendicular to the plane of the turn(s) of the coil.
  • This invention relates to systems for transmitting information between a trackway and a moving vehicle, for example between a railway track and a moving train, of the kind in which a coil (hereinafter termed a telegram coil) laid on the trackway and energized by alternating current becomes inductively coupled with aerial means on the vehicle in order to transmit a signal between the trackway and the vehicle.
  • a coil hereinafter termed a telegram coil
  • the object of this invention is to provide a system enabling two bits of information to be extracted from a single telegram coil.
  • said aerial means is sensitive to the flux substantially parallel to the plane of the turn(s) of said telegram coil, and said telegram coil is positioned on the trackway so that one part of the turn(s) of said coil is nearer than the opposite part of the turn(s) of said coil to the line of movement of said aerial means resulting from movement of the vehicle, whereby the aerial means is predominantly influenced by the component of flux associated with the nearer part of the turn(s) of said telegram coil.
  • a bit of information can be derived by the aerial means from the telegram coil which in conventional binary notation is either l or 0.
  • a second bit of information can be derived from the flux perpendicular to the plane of the turn(s) of the same telegram coil in the manner described in British Pat. specification, Nos. 1,107,028 and 1,147,289.
  • FIG. 1 defines the X," Y" and Z axes referred to in the ensuing description.
  • FIG. 2 shows one arrangement of telegram coils in plan view for producing a multidigit message.
  • FIG. 3 is a cross section through one of the rails of the track to show the arrangement of the telegram and aerial coils.
  • FIGS. 4 to 7 are explanatory diagrams.
  • FIGS. 8 and 9 are tables showing two possible forms of coded information obtained from the arrangement of FIG. 7.
  • a telegram coil 1 is laid on the track with its plane horizontal so that the Z axis is in a vertical plane and the X and Y" axes are in a horizontal plane, the Y" axis extending in the direction along the track and the X axis therefore extending transversely of the track.
  • the origin is the center of the coil.
  • FIG. 2 three such telegram coils I, 2 and 3 are shown connected in series with parallel wires 4 and to an alternating current source 6, the parallel wires 4 and 5 extending along the track.
  • Aerial means 7 is mounted on a train and, resulting from the movement of the train, has the line of movement 8.
  • the aerial means 7 having a line of movement over the center of one rail 9 of the track and the coils l to 3 being located on the foot of the rail 9 through supports 10.
  • the coil 11 of the aerial means 7 is sensitive to the horizontal component of flux B, and the coil 12 is sensitive to the vertical component of flux 8,.
  • FIG. 7 shows the flux distribution around any one of the telegram coils l to 3 for a given instantaneous direction of current through the coil. If the vertical component of flux density B, is plotted against Y, the curve in FIG. 4 is obtained for a given height Z above the coil. If the horizontal transverse flux density B, is plotted against X the curve of FIG. 5 is obtained. If the horizontal transverse flux density 8, is plotted against Y for the value of X 0, that is for a point to the right of the line 13 in FIG. 7, the curve of FIG. 6 is obtained and if B, is plotted against Y for a value of X 0, that is for a point to the left of line 13, the mirror image ofthe curve of FIG. 6 is obtained so that the values of B, are negative.
  • the bit of information derived by aerial coil 11 from one or other of the antiphase values of B depending upon which of the antiphase components of B, is nearer II can be evaluated in two ways. These are l. comparing the phase of signal derived from B I with that of a signal derived from parallel wires 4 and 5, or
  • FIG. 7 which shows the lines of flux around a telegram coil at a given instant in time
  • aerial coil 11 is as shown then, with the assumed convention, if the derived signals from B, and B, are all compared with the signal derived from the parallel wires 4 and 5, the table of FIG. 8 holds.
  • the phase of the B, signals are compared with the phase of the B, signals, the table of FIG. 9 holds, where the two columns (a) and (b) under B, relate to the flux associated with part of the telegram coil to the left and part to the right of the line 13 respectively in FIG. 7.
  • the multidigit message made up of the bits of information derived from the B, fields of coils l to 3 is l 0, 1 and the composite multidigit message derived from the B, fields of coils I to 3, if the direction of winding of coil 11 with respect to the coil 1 is as shown in FIG. 7, would be 0," 0, l
  • the decoder 14 responds to the different distinctive voltage signals induced in the coils 11 and 12 of aerial means 7 to produce distinctive output signals representative of these multibit messages.
  • a system for transmitting binary coded data from a wayside data transmitting location to a moving vehicle comprising:
  • C. detector means disposed on the vehicle to move along said line and including,
  • first aerial means oriented to be inductively coupled with said vertical component of magnetic field of each conductor loop in sequence
  • second aerial means adapted to be inductively coupled with the nearer of said first and second horizontal components of magnetic field of each conductor loop in sequence
  • said first aerial means being responsive to an inductive coupling with one said conductor loop which provides a vertical magnetic field of said first phase to provide a first phase manifestation representative of a one" bit and being responsive to an inductive coupling with one said conductor loop providing a magnetic field of said second opposite phase to provide a second phase manifestation representative of a zero bit,
  • said second aerial means being responsive to an inductive coupling with said first component of horizontal magnetic field of one said conductor loop to provide a third phase manifestation representative of a one bit and being responsive to an inductive coupling with said second component of horizontal magnetic field of one said conductor loop to provide a fourth phase manifestation representative of a zero bit, and
  • D. decoder means responsive to the reception of said first, second, third and fourth phase manifestations to provide a composite signal representative of the binary coded data transmitted from the wayside to said vehicle.
  • a system for transmitting binary coded data between a transmitting station and a receiving station as said one station passes the other said station comprising in combination:
  • one of said receiving loops being so oriented and positioned that it has inductively coupled therein a distinctive voltage signal only in response to said first component of flux and with the induced signal having a distinctive waveshape dependent upon the polarity of energization of said transmitting loop,
  • each said transmitting loop being selectively positionable in either of two distinctive positions laterally spaced relative to a line defined by the path of relative movement of said second receiving loop as said one station passes said other station so that in one of said two positions said second receiving loop has induced therein a distinctive voltage signal in response to said one horizontal component of flux and in the other of said positions said second receiving loop has induced therein a distinctive voltage signal in response to said other horizontal component of flux,

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
US12360A 1969-02-21 1970-02-18 Systems for transmitting information between a railway track and moving train Expired - Lifetime US3636508A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9533/69A GB1242343A (en) 1969-02-21 1969-02-21 Improvements relating to systems for transmitting information between a trackway and a moving vehicle

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US3636508A true US3636508A (en) 1972-01-18

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US12360A Expired - Lifetime US3636508A (en) 1969-02-21 1970-02-18 Systems for transmitting information between a railway track and moving train

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US (1) US3636508A (fr)
AU (1) AU1158670A (fr)
BE (1) BE746311A (fr)
CH (1) CH505515A (fr)
DE (1) DE2008216A1 (fr)
FR (1) FR2035521A5 (fr)
GB (1) GB1242343A (fr)
NL (1) NL7002255A (fr)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778761A (en) * 1971-02-25 1973-12-11 British Railways Board Vehicle orientation determination
US3786411A (en) * 1970-11-26 1974-01-15 Sumitomo Electric Industries Device for detecting location of a movable body
US4449685A (en) * 1980-07-07 1984-05-22 Jeumont Schneider Corporation Coupling for inducing a current in the rails of a railroad track
DE3690750T1 (fr) * 1984-11-28 1988-06-23
US4864306A (en) * 1986-06-23 1989-09-05 Wiita Floyd L Railway anticollision apparatus and method
US5938151A (en) * 1996-10-16 1999-08-17 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Communication systems employing power cables for conveyor carriages
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
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
US20040222331A1 (en) * 2003-01-13 2004-11-11 Bernd Lenz Method and apparatus for the transmission of information between track and vehicle of a model railroad
US6917136B2 (en) 2001-10-01 2005-07-12 Magnemotion, Inc. Synchronous machine design and manufacturing
EP1562304A1 (fr) * 2004-02-06 2005-08-10 Siemens Schweiz AG Procédé de transmission de données au moyen d'un champ polarisé dans le domaine des transmissions à champ proche
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
US20070253657A1 (en) * 2006-05-01 2007-11-01 Rexnord Industries, Llc Wedge-type bearing assembly
US20100033965A1 (en) * 2006-05-01 2010-02-11 Casey Marlon R Nut having a visual indicator
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

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786411A (en) * 1970-11-26 1974-01-15 Sumitomo Electric Industries Device for detecting location of a movable body
US3778761A (en) * 1971-02-25 1973-12-11 British Railways Board Vehicle orientation determination
US4449685A (en) * 1980-07-07 1984-05-22 Jeumont Schneider Corporation Coupling for inducing a current in the rails of a railroad track
DE3690750T1 (fr) * 1984-11-28 1988-06-23
US4864306A (en) * 1986-06-23 1989-09-05 Wiita Floyd L Railway anticollision apparatus and method
US5938151A (en) * 1996-10-16 1999-08-17 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Communication systems employing power cables for conveyor carriages
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
US6983701B2 (en) 2001-10-01 2006-01-10 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
US6917136B2 (en) 2001-10-01 2005-07-12 Magnemotion, Inc. Synchronous machine design and manufacturing
US20050242675A1 (en) * 2001-10-01 2005-11-03 Magnemotion, Inc. Synchronous machine design and manufacturing
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
US20060130699A1 (en) * 2001-10-01 2006-06-22 Magnemotion, Inc. Suspending, guiding and propelling vehicles using magnetic forces
US20040222331A1 (en) * 2003-01-13 2004-11-11 Bernd Lenz Method and apparatus for the transmission of information between track and vehicle of a model railroad
US7198235B2 (en) * 2003-01-13 2007-04-03 Lenz Elektronik Gmbh Method and apparatus for the transmission of information between track and vehicle of a model railroad
EP1562304A1 (fr) * 2004-02-06 2005-08-10 Siemens Schweiz AG Procédé de transmission de données au moyen d'un champ polarisé dans le domaine des transmissions à champ proche
WO2005076494A1 (fr) * 2004-02-06 2005-08-18 Siemens Schweiz Ag Procede de transmission de donnees a l'aide de la polarisation de champ
US7458454B2 (en) 2004-05-07 2008-12-02 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
US7926644B2 (en) 2004-05-07 2011-04-19 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
US20100033965A1 (en) * 2006-05-01 2010-02-11 Casey Marlon R Nut having a visual indicator
US7503698B2 (en) 2006-05-01 2009-03-17 Rexnord Industries, Llc Wedge-type bearing assembly
US7604415B2 (en) 2006-05-01 2009-10-20 Rexnord Industries, Llc Shaft mounting assembly
US20070253657A1 (en) * 2006-05-01 2007-11-01 Rexnord Industries, Llc Wedge-type bearing assembly
US20090016661A1 (en) * 2006-05-01 2009-01-15 Casey Marion R Shaft mounting assembly
US8591059B2 (en) 2006-05-01 2013-11-26 Rexnord Industries, Llc Nut having a visual indicator
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
CH505515A (fr) 1971-03-31
FR2035521A5 (fr) 1970-12-18
DE2008216A1 (de) 1970-08-27
AU1158670A (en) 1971-09-02
NL7002255A (fr) 1970-08-25
BE746311A (fr) 1970-07-31
GB1242343A (en) 1971-08-11

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