WO1994001847A1 - Dispositif et procede pour detecter une ou plusieurs roues d'un vehicule - Google Patents
Dispositif et procede pour detecter une ou plusieurs roues d'un vehicule Download PDFInfo
- Publication number
- WO1994001847A1 WO1994001847A1 PCT/FR1993/000699 FR9300699W WO9401847A1 WO 1994001847 A1 WO1994001847 A1 WO 1994001847A1 FR 9300699 W FR9300699 W FR 9300699W WO 9401847 A1 WO9401847 A1 WO 9401847A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- loop
- vehicle
- vehicles
- roadway
- wheels
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/015—Detecting movement of traffic to be counted or controlled with provision for distinguishing between two or more types of vehicles, e.g. between motor-cars and cycles
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
Definitions
- the present invention relates to the field of analysis, identification and classification of vehicles or wheeled rolling machines, in particular when the latter move within the framework of their normal use, and relates to a device for detecting in particular one or more wheels of a vehicle or of a mobile rolling machine, as well as a method of detection, analysis and classification of vehicles or machine using this device.
- the latter type of identification devices is currently in the form of a loop or two rectangular loops, large dimensions of the order of 1.5 m by 2 m (2 m being measured in the width direction of the track), arranged on or in the roadway and making it possible to collect a signal representative of the whole body of the vehicle including the wheels detected during the passage of the latter over the loop (s).
- the shape of the signal collected and, if necessary, the offset between two signals collected by two loops, arranged with a spacing between them in the direction of movement of the vehicle allow, respectively, to determine the nature of the light vehicle, heavy vehicle as well than its speed of movement.
- Such a device is known in particular from document EP-A-0035 6O.
- this known device does not allow a fine or exact identification of the detected vehicles, authorizing in particular their classification in the ten categories defined by the Organization of Cooperation and Economic Development (OECD) or in the fourteen categories of the French Data Collection System (SIREDO).
- OECD Organization of Cooperation and Economic Development
- SIREDO French Data Collection System
- this device does not detect the number of axles of the vehicle and, to carry out this detection, it is necessary to add an additional device of the pneumatic tube or piezoelectric sensor type picking up the passage of the axles.
- the result is a complex assembly requiring constant maintenance due to the presence of mechanical type sensors, subject to high wear.
- the object of the present invention is in particular to overcome the aforementioned drawbacks.
- a device constituted by at least one electromagnetic loop positioned on the roadway or in the roadway and by a unit for evaluating the influence of the passage of a vehicle at the level of said loop or loops, characterized in that the electromagnetic loop (s), each composed of one or more turns, present (s).
- the invention also relates to a method for detecting, analysis and classification of vehicles or wheeled vehicles employing said device, characterized in that it consists in taking electromagnetic influences on the one hand, metal masses in translation of a vehicle and, on the other hand, the masses metallic rotating wheels of said vehicle, in a distinct and opposite manner, by means of at least one electromagnetic loop, arranged on or in the roadway and having a small dimension in the direction of movement of the vehicles or the axis of the roadway, to produce a signal indicating the number and the positioning of the wheels, between them and in relation to the carcass or chassis of the vehicle, to identify the precise nature of the vehicle analyzed and to classify the latter in predetermined categories, based essentially on the number and the longitudinal arrangement of the wheels or axles, and to store the data collected over a defined period with a view to their subsequent exploitation.
- FIG. 1 represents schematically the device seen from above;
- Figures 2 to 17 show alternative embodiments in number, shape and winding direction of the loops forming part of the device according to the invention;
- FIG. 18 represents the voltage signal generated by a car at the output of the electromagnetic detector forming part of the device of the invention;
- FIG. 19 represents the voltage signal at the output of the detector, generated by a bus;
- FIG. 20 represents the voltage signal at the output of the detector, generated by a two-axle tractor and its three-axle semi-trailer;
- FIG. 1 represents schematically the device seen from above;
- Figures 2 to 17 show alternative embodiments in number, shape and winding direction of the loops forming part of the device according to the invention;
- FIG. 18 represents the voltage signal generated by a car at the output of the electromagnetic detector forming part of the device of the invention;
- FIG. 19 represents the voltage signal at the output of the detector, generated by a bus;
- FIG. 20 represents the voltage signal at the output of the detector
- FIG. 21 represents the voltage signal, with a different sensitivity, at the output of the detector, generated by a tractor with two axles, and its semi-trailer with three axles, of which the first axle is raised
- FIG. 22 represents a table of the categories and their silhouettes identifiable by the device according to the invention.
- the device for detecting in particular one or more wheels of a vehicle or of rolling stock comprising at least one electromagnetic loop and a unit for 'evaluation, is essentially characterized in that the electromagnetic loop (s) 2, each composed of one or more turns, presents (s), on the one hand, a small dimension 1 in the direction of the movement of the vehicles or of the X axis of the roadway 1, smaller than the diameter of the wheels of the vehicles to be identified, and, on the other hand, a preferably rectangular shape and / or an arrangement arranged perpendicular to the X axis of the roadway 1, the loop (s) 2 being arranged at least at one or two tracks 1 "of rolling of a track 1 'of the roadway 1 and sensitive (s), distinctly and opposite, to electromagnetic influences, on the one hand, of masses m tall ics in translation of vehicles (carcass, chassis, underbody) and.
- the electromagnetic loop (s) 2 each composed of one or more turns, presents (s), on the one hand, a small dimension 1 in the direction of the
- the loop (s) 2 advantageously have an inductance of between 40 and 700 ⁇ H and is (are) made up of n turns (n between 1 and 10) of an insulated conducting wire of 0.2 about 3 mm 2 in cross section, placed on or in the pavement 1.
- the evaluation unit is composed, on the one hand, of an electromagnetic detector 3 detecting the variations in frequency voltage fgenerated by the induced current ) of an alternating signal passing through the loop (s) 2 which read i is (are) connected (s) and delivering a proportional signal corresponding to said variations, on the other hand, from a signal processing card 4 analyzing the signal from said electromagnetic detector 3 and determining particular through microprocessor means controlled by a computer program, the number wheels belonging to the same vehicle with a view to its classification and, finally, a memory 5 for storing the informative data delivered by said processing card, which can be read in situ and / or remotely, with possible transfer of its content, elements 3 to 5 of said evaluation unit being mounted in a protective box, placed close or not to roadway 1.
- the electromagnetic detector 3 for example of the type known under the designation SL29C and marketed by the company CFEE (two-way detector and with automatic adjustment), consequently detects the result of variations in the voltage and the frequency of an alternating signal. in the loop (s) 2 due, on the one hand, to the translation of the metallic masses of the vehicle (carcass, underbody, chassis, engine in particular) and, on the other hand, to the rotation of the metallic masses of the wheel or wheels, more particularly of the corresponding tire or tires, of the vehicle to be studied, in particular the variation of the inductance of the circuit formed by each loop 2.
- the frequency f l / (2 ⁇ V LC) of the oscillator thus formed is compared to the frequency of a fixed oscillator.
- This frequency is applied to the input of a phase locked loop circuit whose role is to provide a DC voltage at its output in relation to the input frequency.
- the signal resulting from the output of the loop (s) -detector couple is characteristic of the number of wheels and therefore of the axles, but also of the envelope (carcass - chassis) of the vehicle representing its length and the distance therefrom with respect to on pavement 1.
- the voltage variation due to the rotation of a wheel, when it passes through a loop, is of the order of 200 to 800 millivolts (for the aforementioned type of detector - figures 18 and 21) and is opposite to the direction of the variation generated by the translation of the metallic masses of this same vehicle.
- a loop 2 according to the invention associated with an electromagnetic detector 3, makes it possible to highlight in a distinct manner the influence of the carcass or chassis of the vehicle and the influence of the wheels, more particularly of the tires, but also of the discs, drums, rims, etc., on the frequency of the signal passing through the said loop (s) 2.
- This second circuit will therefore be the seat of an induced current obeying LENZ's law.
- the amplitude of the signals collected at the level of the magnetic detector 3 is independent of the speed at which the vehicle passes over the loop (s) 2, hence an identical measurement and analysis sensitivity. at low speed and high speed.
- a wheel or a raised axle causes a variation of the signal in the same direction as a metallic mass in translation (see positive peak preceding the two negative peaks in Figure 21).
- the computer program if necessary derived from a known signal processing program, as well as the signal processing card 4 advantageously allows the classification of vehicles by category, by discriminating them by means of the number of axles, distances between axles, the length of the carcass or chassis and distances between roadway and underbody, on the one hand, between the axles and, on the other hand, in front or behind the axles.
- the dimension 1 or width of the loop (s) 2 in the direction of movement of the vehicles to be analyzed or the X axis of the Pavement 1 is approximately of the order of magnitude of the width of the bearing surface on the ground of the tires of the wheels of the vehicles to be analyzed (dimensions approximately similar).
- the width 1 of the loop (s) 2 is preferably around 0.3 meters for the detection of heavy goods vehicle wheels and preferably around 0.15 meters for the detection of wheels light vehicles.
- the detection device comprises one or two loop (s) 2 rectangular having a length L between 0.50 m and 1.20 m and arranged (s) each on or under a rolling track 1 "of a track l ', perpendicular to the longitudinal axis of this (s) ci.
- said detection device comprises a single rectangular loop 2 encompassing the two rolling traces 1 "of a track 1 '.
- said detection device comprises an association of two loops 2, constituted by the same conductive wire connected to a single detector 3 and each of which is placed on or under one of the two rolling tracks 1 "of the wheels of the same track 1 'of the roadway 1, each of said loops 2 may include a given number of turns, identical or indifferent.
- the loop (s) 2 preferably have a rectangular shape, it (s) can (can) also be of different shape, namely, in parallelogram, square or round ( Figures 6 to 10) see oval or elliptical (not shown).
- the latter can be separated, tangent (FIG. 8) or intersecting.
- the loop (s) 2 can (can) be secured to one or more flexible and resistant sheets or bands, rather woven or canvas, of identical or complementary characteristics and consistent, for example, in rubber, plastic, synthetic products or resin, these sheets or strips being able to sandwich the wires of turns of the loop (s) 2, having an adhesive face allowing the bonding of the or loop (s) 2 on the roadway 1 and themselves constituted by marking strips, for example stop tape, line "give way", strip of axis or edge or the like.
- said loop (s) 2 can (can) be secured to one or more sheets constituting temporary supports, if necessary perforated, placed on the roadway 1 and secured together by a localized or general coating penetrating through the openings, the sheets that can be biodegradable or dissolvable by a component in particular of the binder of the coating or by heat.
- the detection device can, in addition, be associated with or integrate another detection and data collection system relating to vehicles such as, for example, a large electromagnetic loop device. dimension, a piezoelectric sensor, a resistive sensor, a piezo-polymer sensor, an optical sensor, a hyper-frequency sensor or an ultrasonic sensor, in order to collect additional information relating to the vehicle to be studied, allowing '' further refine the identification of said vehicle.
- a large electromagnetic loop device dimension, a piezoelectric sensor, a resistive sensor, a piezo-polymer sensor, an optical sensor, a hyper-frequency sensor or an ultrasonic sensor, in order to collect additional information relating to the vehicle to be studied, allowing '' further refine the identification of said vehicle.
- the detection device may also include a loop 2, of small dimension in the direction of movement of the vehicles, arranged in a loop 2 'of large dimension, the two loops 2 and 2 ′ being produced by the same conducting wire and connected to the same electromagnetic detector 3, making it possible to determine the length and the speed of movement of the vehicle to be studied.
- the present invention also relates to a method for detecting, analyzing and classifying rolling vehicles using the device described above, characterized in that it consists in detecting the electromagnetic influences, on the one hand, of the masses metallic in translation of a vehicle and, on the other hand, metallic masses in rotation of the wheels of said vehicle, in a distinct and opposite manner, by means of at least one electromagnetic loop 2, arranged on or in the roadway 1 and having a small dimension in the direction of movement of the vehicles or of the axis X of the roadway 1, to produce a signal indicating the number and the positioning of the wheels, between them and relative to the carcass or chassis of the vehicle, to identify the precise nature of the vehicle analyzed and to classify it in predetermined categories, based essentially on the number and longitudinal arrangement of the wheels or ssieux, and to store the data collected over a defined period with a view to their subsequent exploitation.
- the said method can consist in particular of noting the variation of electromagnetic quantities or of frequency or of voltage of an alternating signal passing through the loop (s) 2, during the passage of a vehicle. on this or these latter, following the electromagnetic influence, in particular at the level of the inductance of the loop (s) 2, of the carcass or chassis of the vehicle, on the one hand, and of the wheels on the other hand.
- the said method can consist, by means of several independent loops 2 arranged perpendicular to the axis X of the roadway 1 and each producing its own signal, to transversely note the positioning of one or more several single or twin wheels of a given vehicle, and therefore the positioning of the latter on the track, and to scan said vehicle by longitudinal sections, thus making it possible to reconstruct the imprint or the magnetic signature of said vehicle allowing its comparative identification precise.
- said method will also make it possible to determine the length of the carcass or the chassis and the distances between roadway 1 and underbody between the axles, on the one hand, and in front and behind the axles, on the other hand .
- said method could also consist, by the additional implementation of an ultrasonic sensor, in determining the profile or the silhouette of the vehicle to be analyzed, so as to be able to distinguish between two vehicles being both provided with five axles, but one of which has a platform and the other of which is tilted.
- the latter data can be deduced from the distances between the successive leading edges of the signal received illi by the electromagnetic detector 3 connected to said loops 2 and 2 ′, corresponding to the passage of said vehicle at the level of loop 2 and of the loop 2 '.
- the prior installation of the loop (s) 2 in the roadway 1 can advantageously be carried out by means of a hole saw making it possible to obtain suitable impressions or cutouts of 2 to 3 cm in width and depth in said pavement 1.
- the device according to the invention is particularly intended for or for:
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Traffic Control Systems (AREA)
- Measuring Fluid Pressure (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69306954T DE69306954T2 (de) | 1992-07-06 | 1993-07-06 | Vorrichtung und verfahren zum erkennen von einem oder mehreren fahrzeugrädern. |
CA002139577A CA2139577C (fr) | 1992-07-06 | 1993-07-06 | Dispositif pour detecter notamment une ou plusiers roues d'un vehicule ou d'un engin mobile roulant et procede pour la mise en oeuvre de ce dispositif |
EP93914823A EP0649553B1 (fr) | 1992-07-06 | 1993-07-06 | Dispositif et procede pour detecter une ou plusieurs roues d'un vehicule |
US08/367,112 US5614894A (en) | 1992-07-06 | 1993-07-06 | Device to detect particularly one or several wheels of a vehicle or of a wheeled mobile engine and process for using this device |
AU45059/93A AU4505993A (en) | 1992-07-06 | 1993-07-06 | Device and process for the detection of one or more vehicle wheels |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR92/08416 | 1992-07-06 | ||
FR929208416A FR2693301B1 (fr) | 1992-07-06 | 1992-07-06 | Dispositif pour detecter une ou plusieurs roues d'un engin mobile roulant. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994001847A1 true WO1994001847A1 (fr) | 1994-01-20 |
Family
ID=9431669
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1993/000699 WO1994001847A1 (fr) | 1992-07-06 | 1993-07-06 | Dispositif et procede pour detecter une ou plusieurs roues d'un vehicule |
Country Status (9)
Country | Link |
---|---|
US (1) | US5614894A (fr) |
EP (1) | EP0649553B1 (fr) |
AT (1) | ATE146889T1 (fr) |
AU (1) | AU4505993A (fr) |
CA (1) | CA2139577C (fr) |
DE (1) | DE69306954T2 (fr) |
ES (1) | ES2098759T3 (fr) |
FR (1) | FR2693301B1 (fr) |
WO (1) | WO1994001847A1 (fr) |
Cited By (1)
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US5780465A (en) * | 1997-04-03 | 1998-07-14 | Dow Agrosciences Llc | 4-substituted 5-polycyclylpyrimidine herbicides |
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US5757288A (en) * | 1996-05-02 | 1998-05-26 | Mitron Systems Corporation | Vehicle detector system and method |
US6417784B1 (en) * | 1996-12-03 | 2002-07-09 | Inductive Signature | Automotive vehicle classification and identification by inductive signature |
US6014447A (en) * | 1997-03-20 | 2000-01-11 | Raytheon Company | Passive vehicle classification using low frequency electro-magnetic emanations |
GB9903783D0 (en) * | 1999-02-18 | 1999-04-14 | Univ Edinburgh | Vehicle detector and classifier |
KR20020000790A (ko) | 1999-03-22 | 2002-01-05 | 인덕티브 시그나츄어 테크놀로지스, 인코포레이티드. | 투자율-변조된 반송파 참고 기법 |
US6337640B2 (en) * | 1999-03-31 | 2002-01-08 | Diamond Consulting Services Limited | Inductive loop sensor for traffic detection, and traffic monitoring apparatus and method using such a loop sensor |
GB2348501B (en) | 1999-03-31 | 2003-07-30 | Diamond Consulting Services Lt | Loop sensing apparatus for traffic detection |
IL150491A0 (en) | 2000-01-05 | 2002-12-01 | Inductive Signature Tech Inc | Method and apparatus for active isolation in inductive loop detectors |
US20020053975A1 (en) * | 2000-01-12 | 2002-05-09 | The Chamberlain Group, Inc. | Entry control system |
US20040257199A1 (en) * | 2000-01-12 | 2004-12-23 | Fitzgibbon James J. | Entry control system |
FR2820537B1 (fr) * | 2001-02-08 | 2004-06-25 | Atoll Technology | Detecteur magnetique de roues de vehicules |
US6973462B2 (en) * | 2001-04-03 | 2005-12-06 | Florida Atlantic University | Integrated guardianship information system |
AU2002316460A1 (en) | 2001-06-29 | 2003-03-03 | Inductive Signature Technologies, Inc. | Inductive sensor apparatus and method for deploying |
US7764197B2 (en) * | 2001-10-17 | 2010-07-27 | United Toll Systems, Inc. | System and synchronization process for inductive loops in a multilane environment |
US8331621B1 (en) | 2001-10-17 | 2012-12-11 | United Toll Systems, Inc. | Vehicle image capture system |
US7734500B1 (en) | 2001-10-17 | 2010-06-08 | United Toll Systems, Inc. | Multiple RF read zone system |
US6864804B1 (en) * | 2001-10-17 | 2005-03-08 | Jim Allen | Ferromagnetic loop |
US7136828B1 (en) | 2001-10-17 | 2006-11-14 | Jim Allen | Intelligent vehicle identification system |
US7725348B1 (en) * | 2001-10-17 | 2010-05-25 | United Toll Systems, Inc. | Multilane vehicle information capture system |
ATE367601T1 (de) * | 2002-05-07 | 2007-08-15 | Ages Arbeitsgemeinschaft Gebue | Verfahren und vorrichtung zum automatischen klassifizieren von mit rädern ausgestatteten fahrzeugen |
WO2005017853A1 (fr) * | 2003-08-13 | 2005-02-24 | Petrus Paulus Haasbroek | Classification de vehicules |
EP1628275A1 (fr) * | 2004-08-20 | 2006-02-22 | JADE Beheer B.V. | Détecteur pour boucles à induction |
FR2878080B1 (fr) * | 2004-11-18 | 2011-12-23 | Ct D Etudes Tech De L Equipement Cete De L Est | Boucles communicantes pour transmettre des informations entre les vehicules et l'infrastructure |
FR2896070B1 (fr) | 2006-01-11 | 2008-02-15 | Commissariat Energie Atomique | Systeme magnetique de controle de trafic |
WO2007132068A1 (fr) * | 2006-05-11 | 2007-11-22 | Centre D'etudes Techniques De L'equipement-Cete De L'est | Systeme de detection de vehicule et de communication entre un vehicule et une chaussee, et vehicule adapte |
US7952021B2 (en) | 2007-05-03 | 2011-05-31 | United Toll Systems, Inc. | System and method for loop detector installation |
JP6271044B2 (ja) * | 2015-01-16 | 2018-01-31 | 三菱電機株式会社 | 列車無線システムおよび列車長演算方法 |
JP6440193B2 (ja) * | 2015-02-27 | 2018-12-19 | 三菱重工機械システム株式会社 | 車種判別装置、料金収受設備、車種判別方法及びプログラム |
JP6584001B2 (ja) * | 2015-09-08 | 2019-10-02 | 三菱重工機械システム株式会社 | 料金収受機、料金収受システム、統計システム、料金収受方法及びプログラム |
Citations (8)
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US3312935A (en) * | 1964-04-21 | 1967-04-04 | Sangamo Electric Co | Traffic loop detector |
FR1555538A (fr) * | 1967-06-28 | 1969-01-31 | ||
DE1959546A1 (de) * | 1968-11-29 | 1970-07-09 | Omron Tateisi Electronics Co | Vorrichtung zur Ermittlung von Verkehrsinformationen |
FR2254842A1 (en) * | 1973-12-17 | 1975-07-11 | Charre Jean Louis | Electronic traffic detector laid across roadway - is easy to install and well protected by flexible PVC type strips |
EP0035960A1 (fr) * | 1980-03-11 | 1981-09-16 | ELMEG GmbH Kommunikationstechnik | Méthode et dispositif pour la distinction des véhicules de construction différente dans le trafic routier |
DE3100724A1 (de) * | 1981-01-13 | 1982-07-29 | Scheidt & Bachmann GmbH, 4050 Mönchengladbach | Verfahren zur ueberwachung des vorhandenseins von fahrzeugen innerhalb bestimmter verkehrsflaechen |
FR2549625A1 (fr) * | 1983-07-21 | 1985-01-25 | Electronique Controle Mesure | Dispositif de classification en categories de vehicules circulant sur une chaussee |
US4945356A (en) * | 1983-06-09 | 1990-07-31 | Minnesota Mining And Manufacturing Company | Strip material for and a surface mounted inductive loop |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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GB1289208A (fr) * | 1969-10-06 | 1972-09-13 | ||
US3835449A (en) * | 1972-05-24 | 1974-09-10 | J Viracola | Method and apparatus for classifying the tire width of moving vehicles |
-
1992
- 1992-07-06 FR FR929208416A patent/FR2693301B1/fr not_active Expired - Fee Related
-
1993
- 1993-07-06 AU AU45059/93A patent/AU4505993A/en not_active Abandoned
- 1993-07-06 ES ES93914823T patent/ES2098759T3/es not_active Expired - Lifetime
- 1993-07-06 AT AT93914823T patent/ATE146889T1/de active
- 1993-07-06 WO PCT/FR1993/000699 patent/WO1994001847A1/fr active IP Right Grant
- 1993-07-06 US US08/367,112 patent/US5614894A/en not_active Expired - Lifetime
- 1993-07-06 CA CA002139577A patent/CA2139577C/fr not_active Expired - Lifetime
- 1993-07-06 EP EP93914823A patent/EP0649553B1/fr not_active Expired - Lifetime
- 1993-07-06 DE DE69306954T patent/DE69306954T2/de not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3312935A (en) * | 1964-04-21 | 1967-04-04 | Sangamo Electric Co | Traffic loop detector |
FR1555538A (fr) * | 1967-06-28 | 1969-01-31 | ||
DE1959546A1 (de) * | 1968-11-29 | 1970-07-09 | Omron Tateisi Electronics Co | Vorrichtung zur Ermittlung von Verkehrsinformationen |
FR2254842A1 (en) * | 1973-12-17 | 1975-07-11 | Charre Jean Louis | Electronic traffic detector laid across roadway - is easy to install and well protected by flexible PVC type strips |
EP0035960A1 (fr) * | 1980-03-11 | 1981-09-16 | ELMEG GmbH Kommunikationstechnik | Méthode et dispositif pour la distinction des véhicules de construction différente dans le trafic routier |
DE3100724A1 (de) * | 1981-01-13 | 1982-07-29 | Scheidt & Bachmann GmbH, 4050 Mönchengladbach | Verfahren zur ueberwachung des vorhandenseins von fahrzeugen innerhalb bestimmter verkehrsflaechen |
US4945356A (en) * | 1983-06-09 | 1990-07-31 | Minnesota Mining And Manufacturing Company | Strip material for and a surface mounted inductive loop |
FR2549625A1 (fr) * | 1983-07-21 | 1985-01-25 | Electronique Controle Mesure | Dispositif de classification en categories de vehicules circulant sur une chaussee |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5780465A (en) * | 1997-04-03 | 1998-07-14 | Dow Agrosciences Llc | 4-substituted 5-polycyclylpyrimidine herbicides |
Also Published As
Publication number | Publication date |
---|---|
DE69306954D1 (de) | 1997-02-06 |
DE69306954T2 (de) | 1997-07-03 |
ES2098759T3 (es) | 1997-05-01 |
EP0649553B1 (fr) | 1996-12-27 |
US5614894A (en) | 1997-03-25 |
CA2139577C (fr) | 2003-09-09 |
FR2693301B1 (fr) | 1994-08-05 |
EP0649553A1 (fr) | 1995-04-26 |
AU4505993A (en) | 1994-01-31 |
CA2139577A1 (fr) | 1994-01-20 |
ATE146889T1 (de) | 1997-01-15 |
FR2693301A1 (fr) | 1994-01-07 |
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