EP0135740A2 - System mit Coder und Decoder, um den Fahrzeugführer mit Informationen zu versorgen - Google Patents

System mit Coder und Decoder, um den Fahrzeugführer mit Informationen zu versorgen Download PDF

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Publication number
EP0135740A2
EP0135740A2 EP84109256A EP84109256A EP0135740A2 EP 0135740 A2 EP0135740 A2 EP 0135740A2 EP 84109256 A EP84109256 A EP 84109256A EP 84109256 A EP84109256 A EP 84109256A EP 0135740 A2 EP0135740 A2 EP 0135740A2
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EP
European Patent Office
Prior art keywords
road
components
marking
strip
energy
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.)
Withdrawn
Application number
EP84109256A
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English (en)
French (fr)
Other versions
EP0135740A3 (de
Inventor
Ludwig Dr. Eigenmann
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0135740A2 publication Critical patent/EP0135740A2/de
Publication of EP0135740A3 publication Critical patent/EP0135740A3/de
Withdrawn legal-status Critical Current

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    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/30—Arrangements interacting with transmitters or receivers otherwise than by visible means, e.g. using radar reflectors or radio transmitters
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
    • E01F9/576—Traffic lines
    • E01F9/578—Traffic lines consisting of preformed elements, e.g. tapes, block-type elements specially designed or arranged to make up a traffic line
    • 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 present invention refers to a system which in its entirety is formed by the cooperative combination of a plurality of active and,respectively,passive electronic components, jointly fitted for positively providing an electromagnetic information, and of horizontal markings, suited for positively providing an optical information.
  • the present invention also concerns a method for carrying out road markings.
  • the current road markings either the vertical ones or even more efficient horizontal markings
  • the present markings, or road signalization systems are exclusively dependent upon the sight detection of the signals and upon the fact that a constant attention must be paid by a driver to the direction of travel.
  • This sight detection is affected by the visibility conditions which are influenced by seasonal and weather factors, and therefore it is essential to provide the vehicles with means suitable for receiving, decoding and signalling to the driver (and/or to the vehicle instruments) road data which at the present time are assumed to be important for the safety of the vehicle traffic.
  • Marking strips which are normally used for delineating the edges or sides of roads and highways are very important for traffi safety. These marking strips are normally either white or yellow in color and form an uninterrupted line along the edge of the road or highway, thereby providing a motorist with a good reference point for maintaining the proper distance of the vehicle from the edge of the road. When the weather conditions are particularly bad, however, as in the case of fog, these.strips are practically useless..
  • the applicant has developed a road marking strip including optical and electromagnetic elements, capable therefore to give to the vhicles' driver optical and electromagnetic informations concerning the road situation.
  • Object of this invention is to provide an improved road marking strip situated at the edge of the road and a road surface marking system in conjunction with a device emitting electronic energy assembled aboard a vehicle.
  • a further object is an automatic system fitted for positively providing the driver of a motor vehicle with traffic informations by means of microwaves reflectors.
  • the microwave reflectors are arranged and appropriately combined below the road marking tape, one after the other, - following the direction of the course of the vehicles.
  • the vehicle is equipped with an electronic transmitting and receiving system radiating microwave energy in the direction of the road marking tape, the microwave energy being returned by means of the reflectors.
  • the evaluation of the information received will be done by an associated microcomputer.
  • Vehicle V is provided with a known radar R which serves as an active component for emitting energy in the direction of travel along the road.
  • the radar R comprises a dipole antenna secured below the same vehicle and arranged to receive information provided by dipoles D.
  • the vehicle travels along the roadway A and follows the path defined and indicated by horizontal signalling means.
  • the active component R is suitably computerized for decoding the informations provided by the waves reemitted by the dipoles positioned on the signalling strip S.
  • This signalling strip can be either uninterrupted or arranged in sections spaced from one another, such as indicated at S 2 or respectively at S 1 for providing by itself the informatio that overtaking of the vehicle is prohibited,or,respectively,permitted.
  • the corresponding information is transmitted to the vehicle by the computerized active component R.
  • Dipole D may be formed of a thin aluminum plate which may be, for example, pressworked of aluminum strip or any other suitable material.
  • Dipoles located on the lower side of the prefabricated marking strip form a microwave system.
  • the dipoles which are made of metal and are very thin, can either be incorporated in the body of the marking strip, glued to the lower side of the strip, or incorporated in the molten adhesive primer of the marking strip.
  • Roadway marking strips which are designed for location along the sides of a road or highway,are generally laid down in an uninterrupted line and they are minimally disturbed by the passing traffic.
  • the transmitting and receiving antenna or antennas are mounted on the top or on the side of the vehicle.
  • the results of the applicant's research are summed up in the following description of the electrical characteristics of a roadside marking strip and a system which provides the motorist with certain information through the use of special metallic reflectors, mounted under the strip, and a transceiver. It was discovered, first of all, that the best results were obtained by using the microwave band between 1 and 50 GHz.
  • a continuous microwave signal is transmitted from the moving vehicle to the strip where it is reflected back by a system of metal reflectors located under the marking strip.
  • the return signal is received by the moving vehicle and elaborated so as to provide the desired information.
  • the information can be coded by appropriately spacing the metallic reflectors along the strip, as will be explained in detail below.
  • Fig. 4 illustrates an example of supplemental coding, in which differing series of signals, for example a uniform sequence, while differing groups of signals G 1 , G 2 and G 3 have suitably coded meanings.
  • the resonance circuit consisting of the dipoles reemits the energy in the form of a plurality of harmonics the third one of which is preferably taken advantage of, because that third harmonics is the strongest one.
  • the transmitting-receiving assembly that is the secondary radar R arranged on the vehicle and embodying the active component of the system, may be preferably used for transmission of microwaves between 0.6 and 1.2 GHz.
  • the transmitting antenn of the secondary radar R and the resonance dipoles are arranged transversely to the signalling line.
  • This fact sets up a limitation of the lowest frequency (a straight dipole 25cm long ccrre- sponds to a frequency of 600 MHz.)
  • Such limitation does not exist for the high frequencies.
  • the frequencies which will be practically selected for the anticrash radar equipment,will establish the frequencies of the equipment under discussion.
  • the new composite device has been described and illustrated,limited to its essenti al components, and as an indicative but not limiting example only.
  • the passive dipoles, generally indicated at D in Figs. 2 and 3 can well have a differing geometry and complication, provided that the can form a resonance circuit responsive to the signals emitted by the secondary.radar R.
  • the characteristics of the secondary radar could be modified, provided that high frequencies may be used.
  • the automatic system for providing the driver information according to the present invention requires a particular coding and decoding arrangement.
  • the developed information system is shown in Fig. 6 and consists of synchronizing marking components, key marking components and code marking components.
  • the synchronizing marking components consist of several reflectors equidistantly spaced fixing the time graticule t , thus permitting to measure the speed of the vehicle.
  • the threshold is chosen to guarantee recognition of the reflector.
  • the time elapsed between two oversteps of the threshold will occur first of all, i.e. the time taken by the vehicle to move from one reflector to thecother. For greater accuracy the measurement is taken automatically several times in order to eliminate possible errors in calculating the average time.
  • the next step of the program consists in testing the key marking components by comparing the bit configuration (Examplel Configuration 101011 in Fig. 6) with the key word that has been fed in. Only if they are identical will the final detection of the code marking follow.
  • the rectified output signals generated by the receiver antenna must be elaborated such as to be fed into a microprocessor for evaluation.
  • the flow of the output voltage of a supposed combined ceflector system is shown as an example.
  • the combined reflector system located at the right edge of the road and consequently read from right to left consists of four reflectors (1 to 4) representing the bit configuration or in other words, the local distance between two reflectors; when measured at the reflector center, respectively, that local distance between reflectors will amount to 60 cm from reflectors 1 to 2, another 60 cm to reflector 3 and 120 cm to reflector 4,
  • the configuration of the bit is obtained by plotting first some equidistant points along a straight line at the edge of the road and by placing an about 30 cm long reflector at an equal distance below the marking tape, or not.
  • the purpose of decoding will therefore be the reconstruction of an existing bit configuration according to the flow of the output voltage picked up by the receiver antenna (Fig, 1) at vehicle pseeds from approximately 5 km/h to l80 km/h with the aid of an appropriate circuit, and to supply binary information to the vehicle.
  • Certain properties of the reflection diagram will require an additional description for the scope of realizing the solution suggested further on.
  • the Schmitt trigger a special bistable lever switch is particularly indicated for determining the point of time of the main maximum while eliminating the secondary maxima to the greatest extent.
  • Fig. 4 contains a description of its performance. Installing at the input side a linear ascending tension --linear ascension in the present case -a high-adjustable voltage of about 1 ms ascension time will occur at output U a , having a low potential at the beginning, as soon as the input voltage U 1 exceeds the value U 1top . (If voltage U 1 stays above Ultop, the condition of the output voltage will be maintained. Only if U 1 falls below the adjustable voltage threshold U 1bottom , the output voltage and its 1.
  • Fig. 7 will serve as means of a more accurate illustration of the switch efficacy and for a more detailed discussion on the voltage values U ltop and U lbottom to be adjusted.
  • the voltage U ltop must be established in a way that the main maxima of all reflectors will exceed that value by about 4-8 dB, i.e. by a factor between 1.5 and 2.5 on a linear ordinate scale.
  • Such threshold value U ltop has been fixed at about 8 dB from the upper scale edge (Fig. 7).
  • the Schmitt trigger When rising toward the main maximum the Schmitt trigger will tilt toward the times indicated as Tl, T 2 and T 3 , but the switch will tilt fully to the left even at the fourth impulse without elaboration by the microprocessor though and to become of no importance.
  • Above the threshold U lto p U 1 is allowed to vary as long as it takes to fall below the value U lbottom at the descent to the left of the ascension.
  • threshold U ltoP can always be fixed at a sufficiently high value to avoid similar excesses.
  • Fig. 7 illustrates two positions only of equidistantly placed reflectors for the most simple transmission of information. In order to ascertain the previously established number of equidistant spaces (two only in Fig. 7) equipped with information reflectors, it will be necessary with the aid of the periodical time scale produced by the synchro reflectors, to make contact with.
  • the starting point of the time scale is to be established in such a manner that the time scale extending toward time point t l will come to be as near as possible to the points t l , t 2 and t 3 .
  • the optimal value is determined through the Gaussian principle of the smallest square sum, i.e. th differences are formed between the time scale displaced by at and the times of the point of gravity t 1 , t 2 and t 3 , These differences are then squared, varying at as long until the square sum reaches a minimum; this consideration will result in value at (see Fig. 9).

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  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Traffic Control Systems (AREA)
  • Road Signs Or Road Markings (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
EP84109256A 1983-08-05 1984-08-03 System mit Coder und Decoder, um den Fahrzeugführer mit Informationen zu versorgen Withdrawn EP0135740A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US52116383A 1983-08-05 1983-08-05
US521163 1983-08-05

Publications (2)

Publication Number Publication Date
EP0135740A2 true EP0135740A2 (de) 1985-04-03
EP0135740A3 EP0135740A3 (de) 1987-09-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109256A Withdrawn EP0135740A3 (de) 1983-08-05 1984-08-03 System mit Coder und Decoder, um den Fahrzeugführer mit Informationen zu versorgen

Country Status (2)

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EP (1) EP0135740A3 (de)
JP (1) JPS6076000A (de)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2634929A1 (fr) * 1988-07-28 1990-02-02 Sectronic Sa Dispositif d'aide a la circulation
FR2637715A2 (fr) * 1988-07-28 1990-04-13 Sectronic Sa Detecteur de derive de trajectoire
FR2666832A1 (fr) * 1990-09-19 1992-03-20 Boccon Gibod Henry Procede de signalisation routiere a traitement automatique.
GB2251151A (en) * 1990-11-23 1992-06-24 Kenneth Robert Mcalpine Speed detector
US5130709A (en) * 1987-12-28 1992-07-14 Aisin Aw Co., Ltd. Navigation apparatus for vehicle
US5134393A (en) * 1990-04-02 1992-07-28 Henson H Keith Traffic control system
WO1997014850A1 (en) * 1995-10-18 1997-04-24 Minnesota Mining And Manufacturing Company Conformable magnetic articles underlaid beneath traffic-bearing surfaces
EP0853303A1 (de) * 1997-01-07 1998-07-15 Mitsubishi Heavy Industries, Ltd. Fahrzeugsteuerungsverfahren und Verwendung in automatischem Fahrsystem
EP0881333A1 (de) * 1997-05-28 1998-12-02 TRW Inc. Verbesserter Farbanstrich für radiometrische Ortungssysteme im Mikrowellen-/Millimeter-Bereich und Methode zur Erkennung einer Strassenmarkierung
FR2768537A1 (fr) * 1997-09-18 1999-03-19 Bosch Gmbh Robert Procede de transmission d'informations de circulation au conducteur d'un vehicule
GB2336205A (en) * 1998-04-08 1999-10-13 Factorgraft Limited Vehicle telemetry system
US6081187A (en) * 1996-08-30 2000-06-27 Toyota Jidosha Kabushiki Kaisha Vehicle position detection system
EP0957464A3 (de) * 1998-05-12 2000-09-13 Volkswagen Aktiengesellschaft Verfahren und Einrichtung zur Kenntlichmachung von fahrtrichtungsabhängigen oder stationären bzw. aktuellen Verkehrsinformationen
EP0982699A3 (de) * 1998-08-20 2000-11-15 Matsushita Electric Industrial Co., Ltd. Verkehrszeichenabtastsystem
EP3276748A1 (de) 2016-07-29 2018-01-31 3M Innovative Properties Company Radarstrahlungreflektionsband
CN107826110A (zh) * 2016-09-16 2018-03-23 西门子有限公司 用于车辆的驾驶员辅助系统及方法
US12113278B2 (en) 2019-05-24 2024-10-08 3M Innovative Properties Company Radar retroreflective article

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4863974B2 (ja) * 2007-11-26 2012-01-25 三菱電機株式会社 誘導加熱調理器
JP4864157B2 (ja) * 2010-08-27 2012-02-01 三菱電機株式会社 誘導加熱調理器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH544979A (fr) * 1970-10-21 1973-11-30 Edmond Tuffet Pierre Installation pour avertir un conducteur de véhicule routier de la présence d'un panneau de signalisation routière ou d'une condition de circulation particulière
FR2213549B1 (de) * 1973-01-05 1978-12-29 Thomson Csf
IT1112913B (it) * 1979-05-18 1986-01-20 Eigenmann Ludwig Dispositivo composito per l'esercizio positivo di segnaletica stradale,e metodo per la sua utilizzazione

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5130709A (en) * 1987-12-28 1992-07-14 Aisin Aw Co., Ltd. Navigation apparatus for vehicle
FR2637715A2 (fr) * 1988-07-28 1990-04-13 Sectronic Sa Detecteur de derive de trajectoire
EP0422308A1 (de) * 1988-07-28 1991-04-17 Sectronic S.A. Verkehrhilfseinrichtung mittels einer kodierten Markierung
FR2634929A1 (fr) * 1988-07-28 1990-02-02 Sectronic Sa Dispositif d'aide a la circulation
US5134393A (en) * 1990-04-02 1992-07-28 Henson H Keith Traffic control system
FR2666832A1 (fr) * 1990-09-19 1992-03-20 Boccon Gibod Henry Procede de signalisation routiere a traitement automatique.
GB2251151A (en) * 1990-11-23 1992-06-24 Kenneth Robert Mcalpine Speed detector
GB2251151B (en) * 1990-11-23 1994-10-12 Kenneth Robert Mcalpine Speed detector
US5853846A (en) * 1995-10-18 1998-12-29 Minnesota Mining And Manufacturing Company Conformable magnetic articles underlaid beneath traffic-bearing surfaces
WO1997014850A1 (en) * 1995-10-18 1997-04-24 Minnesota Mining And Manufacturing Company Conformable magnetic articles underlaid beneath traffic-bearing surfaces
US6081187A (en) * 1996-08-30 2000-06-27 Toyota Jidosha Kabushiki Kaisha Vehicle position detection system
US6122573A (en) * 1997-01-07 2000-09-19 Mitsubishi Heavy Industries, Ltd. Vehicle control method and system for use in automatic driving system
EP0853303A1 (de) * 1997-01-07 1998-07-15 Mitsubishi Heavy Industries, Ltd. Fahrzeugsteuerungsverfahren und Verwendung in automatischem Fahrsystem
US6414606B1 (en) 1997-05-28 2002-07-02 Trw Inc. Enhanced paint for microwave/millimeter wave radiometric detection applications and method of road marker detection
US6157320A (en) * 1997-05-28 2000-12-05 Trw Inc. Enhanced paint for microwave/millimeter wave radiometric detection applications and method of road marker detection
EP0881333A1 (de) * 1997-05-28 1998-12-02 TRW Inc. Verbesserter Farbanstrich für radiometrische Ortungssysteme im Mikrowellen-/Millimeter-Bereich und Methode zur Erkennung einer Strassenmarkierung
GB2329502A (en) * 1997-09-18 1999-03-24 Bosch Gmbh Robert Communication of traffic information to a vehicle driver
GB2329502B (en) * 1997-09-18 1999-11-03 Bosch Gmbh Robert Communication of traffic information for the driver of a vehicle
US6107940A (en) * 1997-09-18 2000-08-22 Robert Bosch Gmbh Method for transmitting traffic informations for a driver or a vehicle including maximum speed information
FR2768537A1 (fr) * 1997-09-18 1999-03-19 Bosch Gmbh Robert Procede de transmission d'informations de circulation au conducteur d'un vehicule
GB2336205A (en) * 1998-04-08 1999-10-13 Factorgraft Limited Vehicle telemetry system
EP0949483A3 (de) * 1998-04-08 2000-07-19 Factorgraft Limited Fernmesssystem für Fahrzeuge
GB2336205B (en) * 1998-04-08 2000-08-23 Factorgraft Limited A vehicle telemetry system
EP0957464A3 (de) * 1998-05-12 2000-09-13 Volkswagen Aktiengesellschaft Verfahren und Einrichtung zur Kenntlichmachung von fahrtrichtungsabhängigen oder stationären bzw. aktuellen Verkehrsinformationen
EP0982699A3 (de) * 1998-08-20 2000-11-15 Matsushita Electric Industrial Co., Ltd. Verkehrszeichenabtastsystem
EP3276748A1 (de) 2016-07-29 2018-01-31 3M Innovative Properties Company Radarstrahlungreflektionsband
WO2018022834A1 (en) 2016-07-29 2018-02-01 3M Innovative Properties Company Radar radiation redirecting tape
CN109565116A (zh) * 2016-07-29 2019-04-02 3M创新有限公司 雷达辐射重定向带材
US20190162839A1 (en) * 2016-07-29 2019-05-30 3M Innovative Properties Company Radar radiation redirecting tape
US11163054B2 (en) 2016-07-29 2021-11-02 3M Innovative Properties Company Radar radiation redirecting tape
CN107826110A (zh) * 2016-09-16 2018-03-23 西门子有限公司 用于车辆的驾驶员辅助系统及方法
CN107826110B (zh) * 2016-09-16 2020-12-29 西门子交通有限公司 用于车辆的驾驶员辅助系统及方法
US12113278B2 (en) 2019-05-24 2024-10-08 3M Innovative Properties Company Radar retroreflective article

Also Published As

Publication number Publication date
JPS6076000A (ja) 1985-04-30
EP0135740A3 (de) 1987-09-30

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