EP0038539A1 - Dispositif de signalisation routière fonction de la vitesse et des dimensions des véhicules - Google Patents

Dispositif de signalisation routière fonction de la vitesse et des dimensions des véhicules Download PDF

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Publication number
EP0038539A1
EP0038539A1 EP81102938A EP81102938A EP0038539A1 EP 0038539 A1 EP0038539 A1 EP 0038539A1 EP 81102938 A EP81102938 A EP 81102938A EP 81102938 A EP81102938 A EP 81102938A EP 0038539 A1 EP0038539 A1 EP 0038539A1
Authority
EP
European Patent Office
Prior art keywords
vehicle
loop
ratio
speed
counter
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Withdrawn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
EP81102938A
Other languages
German (de)
English (en)
French (fr)
Inventor
Pierre Laplace
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.)
L' Electronique Des Vehicules Et Des Reseaux Evr A
Original Assignee
L' ELECTRONIQUE DES VEHICULES ET DES RESEAUX EVR ALCATEL
EVR ELEC VEHICULES RESEAUX
L' Electronique Des Vehicules Et Des Reseaux Evr Alcatel
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by L' ELECTRONIQUE DES VEHICULES ET DES RESEAUX EVR ALCATEL, EVR ELEC VEHICULES RESEAUX, L' Electronique Des Vehicules Et Des Reseaux Evr Alcatel filed Critical L' ELECTRONIQUE DES VEHICULES ET DES RESEAUX EVR ALCATEL
Publication of EP0038539A1 publication Critical patent/EP0038539A1/fr
Withdrawn legal-status Critical Current

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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

Definitions

  • the present invention relates to a road signaling device depending on the speed and dimensions of vehicles, said device using magnetic, electrical and digital techniques.
  • the device according to the present invention overcomes this drawback. This indeed makes it possible to choose the parameters of the dimensions of the loops and their distance according to a certain ratio making it easier to process by numerical methods.
  • the subject of the present invention is a road signaling device which is a function of the speed and dimensions of the vehicles, comprising a first loop for detecting the passage of the vehicle and first means for measuring, by digital counter, the occultation time T1 of the first loop.
  • said comparator compares in a plurality of Exclusive OR gates each of the bits of said first counter with each of the higher order bits (shifted by one when said ratio is equal to two and shifted by as many times a that the value of the exponent in said report when said report is a power of two) of said second counter and that the outputs of said exclusive OR gates feed at least one NI gate which delivers logic states 1 or 0 to a memory depending on whether k > 2 or k ⁇ 2.
  • the loop 1 delimited in the direction of travel of the vehicle by a side AB of length 1 and the loop 2 delimited by a side CD of length l 'are spaced from each other by a distance AC D.
  • detection loops 1 and 2 are chosen based on a magnetic principle, the inductance of the loop varying greatly when a metallic vehicle is present.
  • the detectors that work with the loops contain relays whose switching on and off is carried out by the passage of the vehicle.
  • the detector operating with loop 1 is such that the detection of the vehicle begins when the front of the bodywork is level with the edge A of loop 1 and ends directly with the rear B of the loop 1 the presence time of a vehicle in the field of loop 1 is V being the speed of the vehicle.
  • the ratio k is therefore independent of the speed but is only a function of the length of the vehicle body.
  • the two quantities D and 1 can be defined by construction and the length L can determine the limit length L o of the bodywork above which the vehicle can be classified as bulky.
  • This ratio k can advantageously be determined to be equal to two or a multiple of two.
  • the slot T1 of the detector 3 is applied to a digital counter 6 controlled by a clock not shown of 200 HZ for example.
  • the counter 6 can have eight binary outputs providing the value of the time T1 in digital.
  • the slot T3 coming from the gate 5 is applied to a pulse counter 7 identical to the counter 6.
  • a comparator 8 compares the values T1 and T3 coming from the counters 6 and 7 in order to determine the value of the ratio k.
  • a preferred example of a comparator 8 will be described later in connection with FIG. 4.
  • the counter 7 also sends its speed information to two memories 9 and 10 respectively of overspeed of the light vehicle and overspeed of the bulky vehicle.
  • the two memories 9 and 10 produced by means of electronic gates, for example, also receiving the bits of the two limit speed limiters for light vehicles 11 and limit speed for bulky vehicles 12.
  • Each of these series of bits is generated, for example , by eight open or closed switches reproducing these speed limits.
  • the vehicle speed is respectively greater than the speed limit of the light vehicle or of the bulky vehicle (60 km / h and 40 km / h in this example).
  • the information coming from the comparator 8, namely a characteristic state of a bulky vehicle (k> 2) or an inverse state (k 2) is applied to a memory 13 receiving at the same time the information coming from memories 9 and 10
  • the memory 13 can be produced by means of flip-flops D.
  • the memory 13 on its direct output K> 2 has the role of lighting the panel 60 actuated by power circuits 14 when the speed is greater than the vehicle speed limit light and that it is not a bulky vehicle and on its complemented output K ⁇ 2, has the role of lighting the panel 40 when the speed is greater than the speed limit of the bulky vehicle and it s 'is a bulky vehicle.
  • the counter 6 receives the information T1 from the detector 3 at the same time as the signals of a clock CL. It delivers bits on the binary outputs Z1 to Z8.
  • the counter 7 receives the information T3 coming from the gate 5 and delivers bits on the binary outputs Y1 to Y8.
  • the outputs Z1 and Y2 which are offset by one row as well as Zn and Yn + 1 are applied to the two inputs of each of the 7 doors OR EXCLUSIVE such as 16 (whose role is to deliver a state 0 for a match of states of Zn and Yn + 1)
  • Exclusive OR gates 16 are connected to the inputs of NI gates such as 17 and 18 whose role with the NAND gate 19 is to group information from Exclusive OR gates 17 and 18.
  • the output of gate 19 is applied to an input of the flip-flop D forming part of the memory 13.
  • the applications of the present invention are in the field of road signs by light panels which reproduce indications of different speed limits for light vehicles and heavy vehicles.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
EP81102938A 1980-04-21 1981-04-16 Dispositif de signalisation routière fonction de la vitesse et des dimensions des véhicules Withdrawn EP0038539A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8008864A FR2480973A1 (fr) 1980-04-21 1980-04-21 Dispositif de signalisation routiere fonction de la vitesse et des dimensions des vehicules
FR8008864 1980-04-21

Publications (1)

Publication Number Publication Date
EP0038539A1 true EP0038539A1 (fr) 1981-10-28

Family

ID=9241144

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81102938A Withdrawn EP0038539A1 (fr) 1980-04-21 1981-04-16 Dispositif de signalisation routière fonction de la vitesse et des dimensions des véhicules

Country Status (2)

Country Link
EP (1) EP0038539A1 (ja)
FR (1) FR2480973A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262621A2 (de) * 1986-09-30 1988-04-06 Siemens Aktiengesellschaft Fahrzeugdetektor zur Ermittlung von Verkehrsgrössen im Strassenverkehr
WO1997029468A1 (en) * 1996-02-06 1997-08-14 Diamond Consulting Services Limited Road vehicle sensing apparatus and signal processing apparatus therefor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1584556A (ja) * 1968-06-20 1969-12-26
GB1348786A (en) * 1971-05-14 1974-03-20 Plessey Co Ltd Apparatus and methods for assessing the length of a moving vehicle
US3983531A (en) * 1974-06-10 1976-09-28 Northern Traffic & Signal Systems Ltd. Vehicle-responsive signal means
FR2412897A1 (fr) * 1977-12-21 1979-07-20 Neuhaus Sa Jean Dispositif de discrimination de vehicules a partir d'informations fournies par des capteurs de comptage et de vitesse

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2013545A1 (de) * 1970-03-20 1971-09-30 Siemens Ag Ueberwachungseinrichtung fuer die fahrzeugart,z.b.durch die fahrzeuglaenge,ermittelnde verkehrsdetektoren

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1584556A (ja) * 1968-06-20 1969-12-26
GB1348786A (en) * 1971-05-14 1974-03-20 Plessey Co Ltd Apparatus and methods for assessing the length of a moving vehicle
US3983531A (en) * 1974-06-10 1976-09-28 Northern Traffic & Signal Systems Ltd. Vehicle-responsive signal means
FR2412897A1 (fr) * 1977-12-21 1979-07-20 Neuhaus Sa Jean Dispositif de discrimination de vehicules a partir d'informations fournies par des capteurs de comptage et de vitesse

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262621A2 (de) * 1986-09-30 1988-04-06 Siemens Aktiengesellschaft Fahrzeugdetektor zur Ermittlung von Verkehrsgrössen im Strassenverkehr
EP0262621A3 (de) * 1986-09-30 1989-04-12 Siemens Aktiengesellschaft Fahrzeugdetektor zur Ermittlung von Verkehrsgrössen im Strassenverkehr
WO1997029468A1 (en) * 1996-02-06 1997-08-14 Diamond Consulting Services Limited Road vehicle sensing apparatus and signal processing apparatus therefor
EP1028404A2 (en) * 1996-02-06 2000-08-16 Diamond Consulting Services Limited Road vehicle sensing apparatus and signal processing apparatus therefor
EP1028404A3 (en) * 1996-02-06 2003-10-15 Diamond Consulting Services Limited Road vehicle sensing apparatus and signal processing apparatus therefor
EP1585081A3 (en) * 1996-02-06 2011-01-12 Diamond Consulting Services Limited Road vehicle sensing apparatus and signal processing apparatus therefor
EP2276010A1 (en) * 1996-02-06 2011-01-19 Diamond Consulting Services Limited Road vehicle sensing apparatus and signal processing apparatus therefor

Also Published As

Publication number Publication date
FR2480973A1 (fr) 1981-10-23
FR2480973B1 (ja) 1983-11-25

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Inventor name: LAPLACE, PIERRE