EP1395967B1 - Vorrichtung und verfahren mit permanentmagneten zur übertragung von informationen an fahrzeuge - Google Patents

Vorrichtung und verfahren mit permanentmagneten zur übertragung von informationen an fahrzeuge Download PDF

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Publication number
EP1395967B1
EP1395967B1 EP02720323A EP02720323A EP1395967B1 EP 1395967 B1 EP1395967 B1 EP 1395967B1 EP 02720323 A EP02720323 A EP 02720323A EP 02720323 A EP02720323 A EP 02720323A EP 1395967 B1 EP1395967 B1 EP 1395967B1
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EP
European Patent Office
Prior art keywords
pockets
permanent magnet
vehicles
segment
road surface
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
EP02720323A
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English (en)
French (fr)
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EP1395967A1 (de
Inventor
Sandor Hedl
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Individual
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Individual
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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
    • G08G1/096716—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information does not generate an automatic action on the vehicle control
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
    • G08G1/096758—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where no selection takes place on the transmitted or the received information
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096783—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a roadside individual element

Definitions

  • the invention relates to a method of supplying binary coded time invariant information to vehicles travelling along roadways, wherein permanent magnet pieces disposed at predetermined positions and embedded in the solid road surface are provided and the vehicles are equipped with induction detectors located on a structural member which passes over the magnets within a certain range of action, and the output signals of the induction detectors varying with time are processed by a processing unit decoding binary code sequences, and the decoded information is displayed and/or used for automatic activation of a certain operational unit.
  • the invention further relates to permanent magnet pieces for using the method.
  • This unit can be for example an instrument or dispatcher system indicating the position of a vehicle, but also, an adjusting system that automatically sets the technical parameters of vehicles (e. g.: shock absorption) according to certain road conditions as well as marking under-road public utilities may be realised this way.
  • a channel of information flow is produced in such a way that signals are transmitted from transmitters located along the roadway and received by receivers located on a vehicle.
  • the disadvantage of this approach is that the transmitter needs energy source and it can easily get damaged.
  • Hungarian patent application HU 219 078 describes an embodiment in which passive signalling elements are used for giving notice about location of impending danger.
  • a detector located on the vehicle senses the magnetic field from the magnets as it intersects the magnetic lines of force.
  • the positioning thereof relative to each other may carry additional information which may be interpreted by the detector or this information may contribute to more reliable recognition of warning.
  • a critical point is the range of action of the detector, i. e. the maximal distance between the magnet and the detector when the latter is still able to recognize the magnet.
  • the range of action is typically between 0.3-0.4 m because of the unfavourable orientation of the magnetic lines of force, in which case the detectors must be located at the vehicle's lowest point possible.
  • the exact pass line must be determined or more rows of magnets must be located perpendicular to the direction of travelling in order to cover the necessary width of the road effectively.
  • the range of action can be improved, however, the road surface necessary to be broken up is increased significantly.
  • the object of the present invention is to provide a permanent magnet piece having increased range of action which can be located easily and can be manufactured economically; and to provide a method of locating the permanent magnet piece for the aforementioned magnetic signalling system.
  • the formation of lines of force is more advantageous and the range of action may be between 0.6-0.8 m, i.e. it can be doubled without significant increase in costs.
  • the middle part of it can be made of soft iron material having high conductivity for magnetic lines of force.
  • a further significant advantage of forming the magnet piece arched resides in the technology for location since it is satisfactory to cut only "slits" shaped as a segment of a circle in the solid road surface by a road cutter disk which can be done easily and rapidly by means of an apparatus generally used, and the permanent magnet pieces can be inserted in these slits. Fixing can be done by covering the slits with asphalt or similar material that is easy to shape in its hot state.
  • arched bar-shaped magnetic elements are used as permanent magnet piece whose thickness perpendicular to a plane defined by the radius of curvature of arching is less than the width of the arched bar-shaped magnetic elements in said plane; and perpendicular to usual direction of travelling of vehicles pockets are formed in the solid road surface whose cross-section is similar to a segment of a circle using a cutter disk rotated around a horizontal shaft, the pockets are arranged in a predefined way relative to each other, and the magnetic elements are located and fixed in these pockets with their concave side facing upwards.
  • the bar-shaped permanent magnet piece according to the invention with the two end parts having N-S magnetic polarity is an arched bar-shaped magnetic element whose thickness perpendicular to a plane defined by the radius of curvature of arching is less than the width of the arched bar-shaped magnetic element in said plane.
  • Figure 1 shows an example of a permanent magnet piece according to the preferred embodiment of the present invention.
  • arched magnetic element 1 is to be embedded in the roadway.
  • the magnetic lines of force between S-N poles are shown drawn in outline.
  • Magnetic element 1 is flat, having a cross-section of a square and having a shape of a segment of an annulus when viewing front-wise, and its thickness perpendicular to the plane defined by the segment of the annulus is less than the width of the segment of the annulus.
  • the thin, flat formation of the magnetic piece is advantageous in terms of locating as previously described.
  • the two end pieces 2 made of magnetized ferromagnetic material, for example slices of cobalt-magnet, which are coupled by a middle piece 3 made of soft iron.
  • the middle piece 3 can be made of soft iron material having a flat square profile which is cut up in order to get pieces of predefined length which are then bent by means of a bending machine.
  • any kind of adhesive suitable for metal can be used, but care must be taken of the order of magnetic polarity.
  • the length of the middle piece 3 after cutting off may be typically e.g. 0.25 m and the radius of bending may be 0.4 m. Bending is performed edgeways of the flat soft iron material.
  • Locating of the permanent magnet pieces according to the present invention can be performed simply and rapidly since only small parts of the road surface must be broken up and must be covered back with asphalt.
  • pockets 6 having cross-section of a segment of a circle are formed by a cutter disk.
  • the powered cutter disk must be held in such a way that its axis of rotation should be horizontal and perpendicular to the usual travelling direction of the vehicles.
  • Several pockets 6 are cut in a given arrangement relative to each other, so that the pockets 6 whose longitudinal cross-section is of a cross-section of a segment of a circle should be positioned lengthwise in a line parallel to a line of the vehicles' usual direction of travelling.
  • pockets 6 can be formed in several parallel lines each of which corresponds to a line of the vehicles' usual direction of travelling as it can be seen in Figure 2.
  • the positioning is performed such a way that the detector mounted on the vehicles passing over is able to compare the periods of time elapsed between intersections of the peaks of individual magnetic lines of force.
  • Permanent magnet pieces i. e. magnetic elements 1 are inserted and fixed in these pockets 6 with their concave side facing upwards. Fixing may be done by using any kind of known material for road repairs which is easy to shape in its hot state, in such a way that the pockets are filled with this material up to the level of the superficial plane of solid road surface 7.
  • magnetic elements 1 are located in the pockets 6 in such a way that the direction of their magnetic polarization would be the same which is advantageous in terms of effective detection. Also, it is preferable to choose the direction closest to the direction of the natural geomagnetic polarization (W-S direction), since mass of iron in the vehicles passing in the same direction would automatically polarize the located permanent magnet pieces into W-S direction.
  • W-S direction the direction closest to the direction of the natural geomagnetic polarization
  • pocket 6 and one of the located permanent magnet pieces can be seen embedded in the layered structure of a typical public road.
  • the layered structure comprises wearing surface 11 having a thickness of 1-4 cm, binder course 12 and gravel-ballast 13.
  • wearing surface 11 having a thickness of 1-4 cm
  • binder course 12 and gravel-ballast 13.
  • the wearing surface can be laid over the closing surface 5 of the located magnetic elements 1 which are brought to the same level as the final step of the building technology.
  • the cuts the direction of which corresponds to the direction of travelling are not disturbing and are not subjected to increased wearing at all.
  • Induction coils of the magnetic sensing detectors may be located on the chassis or in the bumper of the vehicles travelling along a road, or in an optional additional apparatus connected to the vehicle, or in case of passenger cars they might be in the passenger compartment as well, and the output signals of the induction detectors varying with time may be transmitted to an appropriate decoding processing unit. Shaping up of this unit does not fall within the scope of the present invention. Generally, it can be said that the processing unit should produce a binary code sequence from the signals of the detector and should display the decoded information and/or make it usable for automatic activation of a certain operational unit.

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  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Road Signs Or Road Markings (AREA)
  • Traffic Control Systems (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Claims (16)

  1. Verfahren zum Ausgeben von binär kodierter, in der Zeit konstanter Information für an Verkehrswegen sich bewegende Fahrzeuge, bei welchem in einer gegegebenen Anordnung im festen Fahrbahnbelag eingebettete permanente Magneteinsätze verwendet werden; und an den Verkehrsmitteln, an einem oberhalb der Magneten, von den Magneten in einem gegebenen Wirkungsabstand fahrenden Strukturteil deren induktive Detektoren angebracht sind; die in der Zeit sich verändernde Ausgangssignale der induktiven Detektoren von einer die binäre Kodreihe dekodierende Bearbeitungseinheit bearbeitet werden, und die dekodierte Information angezeigt und/oder für die automatische Aktivierung einer gegebenen Operationseinheit angewendet wird, dadurch gekennzeichnet,    daß als permanenter Magneteinsatz gebogene stabförmige magnetische Elemente angewendet werden, deren die an die durch das Biegungsradius bestimmte Ebene perpendikuläre Dicke kleiner als daß sich in der genannten Ebene befindende Breitenmaß der gebogenen stabförmigen magnetischen Elemente; ferner kreissegmentförmige Taschen in einer zueinander vorbestimmten Anordnung, mittels einer an die gewöhnliche Fahrtrichtung der Verkehrsmittel perpendikulären und um eine waagerechte Achse gedrehten Schneidescheibe im festen Fahrbahnbelag des Weges ausgestaltet werden, und die magnetische Elemente in diesen Tascheen mit ihrer konkaven Seite oben untergebracht und befestigt werden.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Operationseinheit ein Sender verwendet wird, welcher ein Signal in ein Dispatcherzentrum durchgibt.
  3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Operationseinheit ein Zähler verwendet wird, welcher mit einem gegebenen Kode fortgeschaltet wird.
  4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Operationseinheit ein an eine Gefahrquelle aufmerksam machendes akustisches oder visuelles Mittel verwendet wird, welcher bei seiner Aktivierung ein Merkzeichen dem Fahrer abgibt.
  5. Verfahren nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß in ihrem Längsschnitt einen kreissegmentförmigen Querschnitt habende Taschen in den festen Fahrbahnbelag eingeschnitten werden und die genannte Taschen an einer mit der gewöhnlichen Fahrtrichtung der Fahrzeuge gleichlaufenden Gerade angeordnet sind.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die sich in Längsrichtung an einer Geraden befindende Taschen in verschiedenen, einem binären Kode entsprechenden Abständen voneinander angeordnet werden.
  7. Verfahren nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß in ihrem Längsschnitt einen kreissegmentförmigen Querschnitt habende Taschen in den festen Fahrbahnbelag eingeschnitten werden und die genannte Taschen in Längsrichtung an mehreren paralellen, mit der gewöhnlichen Fahrtrichtung der Fahrzeuge gleichlaufenden Geraden angebracht werden.
  8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß die sich in Längsrichtung an mehreren Geraden angeordnete Taschen durch verschiedene, einem binären Kode entsprechende Abstände voneinander getrennt werden, und zwar bei den verschiedenen parallelen Geraden durch verschiedene Abstände, die den gegebenen binären Koden entsprechen.
  9. Verfahren nach einem der Ansprüche 1-8, dadurch gekennzeichnet, daß die als permanente Magneteinsätze dienende magnetische Elemente in den Taschen in gleicher magnetischen Polarisierungsrichtung angebracht werden.
  10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß die als permanente Magneteinsätze dienende magnetische Elemente in den Taschen in einer zu der magnetischen Polarisierungsrichtung der Erde näheren Polarisierungsrichtung angebracht werden.
  11. Verfahren nach einem der Ansprüche 1-11, dadurch gekennzeichnet, daß die in die Taschen mit ihrer konkaven Seite oben eingesetzte magnetische Elemente unter der Ebene der Oberfläche des festen Fahrbahnbelags untergebracht werden, und die Taschen mit einem in warmem Zustand gut verformbaren Material bis der Ebene der Oberfläche des festen Fahrbahnbelags ausgegossen werden.
  12. Permanenter Magneteinsatz zur Verwirklichung des Verfahrens nach Anspruch 1, mit zwei Endteilen, die eine N-S magnetische Polarisierung haben, dadurch gekennzeichnet, daß der Magneteinsatz durch ein gebogenes stabförmiges flaches magnetisches Element (1) mit Kreisringsegmentform gebildet ist, beide Endteile (2) des Kreisringsegmentes aus einem magnetisiertem ferromagnetischem Material bestehen, und beide Endteile (2) mittels eines aus einem Weicheisenmaterial gefertigten Mittelteils (3) miteinander verbunden sind.
  13. Permanenter Magneteinsatz nach Anspruch 12, dadurch gekennzeichnet, daß die beiden ferromagnetische Endteile (2) des Kreisringsegmentes und der aus einem Weicheisenmaterial gefertigte Mittelteil (3) miteinander durch ein für das Kleben von Metallen geeignetes Klebstoff verbunden sind.
  14. Permanenter Magneteinsatz nach Anspruch 12, dadurch gekennzeichnet, daß das flache Kreisringsegment mit zwei Endteilen versehen ist, die je eine Abschließfläche (4) radialer Richtung haben.
  15. Permanenter Magneteinsatz nach Anspruch 12, dadurch gekennzeichnet, daß das flache Kreisringsegment mit zwei Endteilen versehen ist, die je eine Abschliessfläche (4) sekanter Richtung haben.
  16. Permanenter Magneteinsatz nach Anspruch 14 oder 15, dadurch gekennzeichnet, daß die beiden aus ferromagnetischem Material bestehende Endteile (2) des Kreisrigsegmentes durch je ein die Abschließfläche (4, 5) bildendes Plättchen gebildet sind, das an den aus Weicheisenmaterial gefertigten und mit parallelen Endflächen versehenen Mittelteil (3) geklebt ist.
EP02720323A 2001-04-27 2002-04-26 Vorrichtung und verfahren mit permanentmagneten zur übertragung von informationen an fahrzeuge Expired - Lifetime EP1395967B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
HU0101720P 2001-04-27
HU0101720A HU224667B1 (hu) 2001-04-27 2001-04-27 Eljárás binárisan kódolt, időben állandó információ szolgáltatására alkalmas közlekedési útburkolat kialakítására és permanens mágnesbetét ezen célra
PCT/HU2002/000034 WO2002089090A1 (en) 2001-04-27 2002-04-26 Device and method based on permanent magnets for supplying information to vehicles

Publications (2)

Publication Number Publication Date
EP1395967A1 EP1395967A1 (de) 2004-03-10
EP1395967B1 true EP1395967B1 (de) 2005-08-31

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EP02720323A Expired - Lifetime EP1395967B1 (de) 2001-04-27 2002-04-26 Vorrichtung und verfahren mit permanentmagneten zur übertragung von informationen an fahrzeuge

Country Status (6)

Country Link
EP (1) EP1395967B1 (de)
AT (1) ATE303644T1 (de)
DE (1) DE60205895T2 (de)
ES (1) ES2248543T3 (de)
HU (1) HU224667B1 (de)
WO (1) WO2002089090A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU3289U (en) * 2006-08-08 2007-05-29 Sandor Hedl Receiver for vehicle

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044043A (en) * 1958-07-21 1962-07-10 Gen Motors Corp Vehicle signalling apparatus for warning of approaching road conditions
US3609678A (en) * 1969-04-28 1971-09-28 Minnesota Mining & Mfg Magnetized means for providing control information to moving vehicles
US3668624A (en) * 1969-11-20 1972-06-06 Novatek Inc Method and apparatus for vehicle control and guidance
DE3521655A1 (de) * 1985-06-18 1987-01-15 Mueller Ind Management Gmbh Einrichtung zum erfassen von fahrzeugverkehr mit magnetfelddetektoren

Also Published As

Publication number Publication date
HUP0101720A2 (hu) 2002-12-28
DE60205895D1 (de) 2005-10-06
DE60205895T2 (de) 2006-07-13
ATE303644T1 (de) 2005-09-15
HU224667B1 (hu) 2005-12-28
EP1395967A1 (de) 2004-03-10
ES2248543T3 (es) 2006-03-16
WO2002089090A1 (en) 2002-11-07
HU0101720D0 (en) 2001-07-30

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