EP1850302A1 - System zur Bestimmung des Fahrspurs eines Fahrzeuges entlang eines mehrspurigen Fahrweges - Google Patents

System zur Bestimmung des Fahrspurs eines Fahrzeuges entlang eines mehrspurigen Fahrweges Download PDF

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Publication number
EP1850302A1
EP1850302A1 EP06425284A EP06425284A EP1850302A1 EP 1850302 A1 EP1850302 A1 EP 1850302A1 EP 06425284 A EP06425284 A EP 06425284A EP 06425284 A EP06425284 A EP 06425284A EP 1850302 A1 EP1850302 A1 EP 1850302A1
Authority
EP
European Patent Office
Prior art keywords
lane
radio signals
vehicle
stretch
road
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Withdrawn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
EP06425284A
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English (en)
French (fr)
Inventor
Francesco Lilli
Sergio Damiani
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.)
Centro Ricerche Fiat SCpA
Original Assignee
Centro Ricerche Fiat SCpA
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 Centro Ricerche Fiat SCpA filed Critical Centro Ricerche Fiat SCpA
Priority to EP06425284A priority Critical patent/EP1850302A1/de
Publication of EP1850302A1 publication Critical patent/EP1850302A1/de
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
    • G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
    • G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
    • 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

Definitions

  • the present invention relates in general to the monitoring of the transit of vehicles along a stretch of road, and more in particular to the determination of the lane of travel of vehicles along a stretch of road with a number of lanes, to which the ensuing treatment will make explicit reference without this implying any loss in generality.
  • the efficiency of said systems is, however, strictly linked to the quality of the images acquired, which, as is known, depends, among other things, upon the degree of visibility and external light and can thus be markedly jeopardized by external factors such as, for example, dark, fog, snow or dirt deposited on the optics of the video cameras.
  • the aim of the present invention is to provide a system and a method for monitoring the transit of vehicles along a stretch of road, and more in particular for determination of the lane of travel of vehicles along a stretch of road with a number of lanes, which will operate in a reliable way, irrespective of the lighting and environmental conditions.
  • Provided according to the present invention is a system and a method for monitoring the transit of vehicles along a stretch of road, and more in particular for determination of the lane of travel of vehicles along a stretch of road with a number of lanes, as defined in the annexed claims.
  • FIG. 1 Designated as a whole by 1 in Figure 1 is a system for monitoring the transit of vehicles along a stretch of road 2 provided according to the present invention.
  • Figure 1 illustrates a stretch of road 2 constituted by a stretch of a carriageway with two lanes of a motorway, in which a first vehicle 3 is travelling along the right-hand lane 4 (normal transit) and a second vehicle 5 is travelling along the left-hand lane 6 (for overtaking) .
  • the monitoring system 1 comprises, for each stretch of road to be monitored a first fixed detection station 7 and a second fixed detection station 8, set, respectively, along the right-hand lane 4 and the left-hand lane 6, and an electronic device 9, which is mounted on board the vehicles 3 and 5 that are travelling along the stretch of road 2 and is designed to receive radio signals coming from the fixed detection stations 7 and 8 as well as to transmit radio signals to the latter.
  • the fixed detection stations 7 and 8 both comprise a transceiver unit 10 and a processing unit 11 connected to the transceiver unit 10.
  • the transceiver unit 10 of the station 7 is designed to transmit radio signals to the right-hand lane 4 of the stretch of road 2 and to receive prevalently, but not exclusively, radio signals coming from the electronic devices 9 of vehicles that are travelling along the right-hand lane 4, for example the vehicle 3 illustrated in Figure 1, whilst the transceiver unit 10 of the station 8 is designed to transmit radio signals to the left-hand lane 6 and to receive radio signals coming prevalently, but not exclusively, from the electronic devices 9 of vehicles that are travelling along the left-hand lane 6, such as, for example, the vehicle 5.
  • the processing units 11 are, instead, designed to manage the operativeness of the fixed detection stations 7 and 8 and to determine, respectively, the lane on which the vehicles 3 and 5 are travelling.
  • the electronic device 9 of the vehicles 3 and 5, as shown in the enlargement within the dashed circle of Figure 1, comprises:
  • the detection station 7 continuously transmits a directional signal having given spectral characteristics, namely, known transmitted power P t (for example 2 W), given frequency f q , and pre-set digital mode of modulation (for example FSK, GFSK, etc.), such as to create a range of reception 14 that covers the entire width of the right-hand lane 4 and at least part of the left-hand lane 6, and awaits reception of signals of response coming from vehicles that are travelling prevalently on the right-hand lane 4 and that traverse the range of reception 14.
  • P t for example 2 W
  • f q a frequency division multiplex
  • pre-set digital mode of modulation for example FSK, GFSK, etc.
  • the detection station 8 continuously transmits a directional signal having given spectral characteristics, namely, known transmitted power P t (for example 2 W), a given frequency f q , and a pre-set digital mode of modulation (for example FSK, GFSK, etc.), such as to create a range of reception 15 that covers the entire width of the left-hand lane 6 and at least part of the right-hand lane 4, and awaits reception of signals of response coming prevalently from vehicles that are travelling along the left-hand lane 6 and that traverse the range of reception 15.
  • P t for example 2 W
  • a given frequency f q for example 2 W
  • a pre-set digital mode of modulation for example FSK, GFSK, etc.
  • the vehicle 3 when the vehicle 3 is travelling on the right-hand lane 4 and traverses exclusively the range of reception 14 it receives, via the transceiver unit 12 of the electronic device 9, the signal transmitted by the station 7 and sends a radio signal of response, which also has given spectral characteristics, i.e., known transmitted power P t (for example 2 W), pre-set frequency f q , and pre-set digital mode of modulation, which is received by the station 7 and on the basis of which the station 7 determines the lane 4 as the one along which the vehicle 3 is travelling.
  • P t for example 2 W
  • pre-set frequency f q pre-set digital mode of modulation
  • the vehicle 5 when the vehicle 5 is travelling on the left-hand lane 6 and traverses exclusively the range of reception 15, it receives, via the transceiver unit 12 of the electronic device 9, the signal transmitted by the station 8 and sends a radio signal of response, which also has given spectral characteristics i.e., known transmitted power P t (for example 2 W), pre-set frequency f q , and pre-set digital mode of modulation, which is received by the station 8 and on the basis of which the station 8 determines the left-hand lane 6 as the one along which the vehicle 5 is travelling.
  • P t for example 2 W
  • pre-set frequency f q pre-set digital mode of modulation
  • Determination of the lanes of travel of the vehicles 3 and 5 by the stations 7 and 8 can occur, for example, by measuring in a way in itself known the time of response of the signals sent by the devices 9 of the vehicles 3 and 5, i.e., the time that said signals take to reach, respectively, the stations 7 and 8, or else by measuring the power of the signals sent by the vehicles 3 and 5 and comparing said measured values with one or more pre-set threshold values that indicate whether the vehicle is travelling on the right-hand lane 4 or on the left-hand one 6.
  • each station 7 and 8 compares the value of the signal received thereby with a minimum threshold value indicating the fact that the vehicle is travelling on its own lane and, in the case where the signal detected is below said threshold value, no determination of the lane of travel of the vehicle is made.
  • the stations 7 and 8 could also be configured to communicate with one another, for example via a wired or radio connection, as illustrated by the dashed line of Figure 1.
  • the procedure for determination of the lane of travel of the vehicles that are travelling along the stretch of road 2 could be implemented either exclusively by just one of the two stations 7 or 8, or else by one of the two stations 7 or 8 on the basis of a pre-defined criterion of selection of the station.
  • one of the two stations could be configured for receiving the signals coming from the vehicles that are travelling along the left-hand lane 6 and for transmitting said signals to the station 7, which could instead be configured for receiving the signals coming from the vehicles that are travelling along the right-hand lane 4, for receiving the signals coming from the station 8, and for determining the lane of travel of all the vehicles that are travelling along the stretch of road 2, on the basis of all the signals received.
  • the system 1 could be configured in such a way that, whenever one of the two stations 7, 8 or both of the stations 7 and 8 receive signals coming from the vehicles that are travelling along the stretch of road 2, each station transmits to the other station the information contained in the signals received, on the basis of which the two stations 7 and 8 start a procedure of selection of the station that is to determine the lane on which the vehicles are travelling along the stretch of road 2.
  • the selection of the station that is to determine the lane of travel of the vehicles can occur, for example, on the basis of the number of vehicles that each of the two stations 7 and 8 is currently handling, or on the basis of a comparison between the powers and/or the times of flight of the signals transmitted by the devices 9 of the vehicles and received by the stations 7 and 8.
  • the station 7 In the case of heavy traffic, for example if the station 7 is currently determining the lane of travel of a large number of vehicles, e.g., fifty, whilst the station 8 is determining the lane of travel of a smaller number of vehicles, e.g., ten, it could be useful to delegate to the station 8 the task of determining the lane of travel of the remaining vehicles that traverse the stretch of road 2, irrespective of whether they are travelling on the right-hand lane 4 or on the left-hand one 6, until the number of vehicles handled by the station 7 decreases sensibly, so as not to overload the station 7.
  • a large number of vehicles e.g., fifty
  • the station 8 it could be useful to delegate to the station 8 the task of determining the lane of travel of the remaining vehicles that traverse the stretch of road 2, irrespective of whether they are travelling on the right-hand lane 4 or on the left-hand one 6, until the number of vehicles handled by the station 7 decreases sensibly, so as not to overload the station 7.
  • the system 1 can be configured in such a way that both of the stations 7 and 8 compare the values of the power of the signals received by them with the values of the power of the signals received by the other station, and on the basis of said comparison the station that has measured the values of power that are more precise with respect to the pre-set threshold values decides automatically to start the procedure for determining the lane of travel of the vehicles.
  • the system 1 is configured in such a way that the procedure for determining the lane is repeated a certain number of times, for example five times, or else is repeated cyclically starting from when the vehicles enter the ranges of reception 14 and 15 and transmit for the first time a signal of response until they pass beyond the detection stations 7 and 8.
  • the embodiment of the system 1 of the invention illustrated in Figure 2 envisages, instead, the use of just one fixed detection station located along one of the two lanes that make up the carriageway of the stretch of road 2, for example the station 7 located along the right-hand lane 4, configured for transmitting continuously a directional signal having given spectral characteristics, namely, the known transmitted power P t (for example 2 W), the given frequency f q , and the pre-set digital mode of modulation (for example FSK, GFSK, etc.), such as to create a range of reception 16 that covers the entire width of the right-hand lane 4 and the entire width of the left-hand lane 6 for receiving signals of response coming from vehicles that are travelling along the stretch of road 2 traversing the range of reception 16, on the basis of which the station 7 determines the lane of travel of the vehicles that traverse the stretch of road 2.
  • a directional signal having given spectral characteristics, namely, the known transmitted power P t (for example 2 W), the given frequency f q , and the pre-set
  • determination of the lane of travel of the vehicles that traverse the stretch of road 2 occurs in a manner similar to the embodiment previously described and illustrated in Figure 1, i.e., by measuring also in this case (in a way in itself known) the time of response of the signals sent by the devices 9 of the vehicles 3 and 5 to reach the station 7 or else by measuring the power of the signals sent by the vehicles 3 and 5 and comparing said measured values with one or more pre-set threshold values indicating the fact that a vehicle is travelling on the right-hand lane 4 or on the left-hand one 6.
  • the system and the method described can be used, for example, to provide an automatic system of payment of the road toll without envisaging barriers or toll booths or for monitoring the intensity of the traffic present on each lane of a road.
  • the earth stations 7 and 8 could be installed along a given toll point corresponding to an area and/or to a stretch of road subject to payment and could be configured for detecting the passage of a vehicle, detecting a code identifying the vehicle itself transmitted by the on-board device 9, determining the lane on which it is travelling and the total cost of the tolls to be charged to the user of the vehicle, and communicating to the on-board device 9 of the vehicle, during passage of the vehicle in a position corresponding to the detection station and hence to the toll point, a set of information regarding payment of the toll itself.
  • At least one of the two detection stations should be provided with a data base stored within the electronic processing unit 11, containing a plurality of information data such as, for example, a code identifying the vehicle 3, a number of credit card from which to withdraw the sum expected for the toll or a pre-paid credit from which to deduct the sum corresponding to the toll.
  • a data base stored within the electronic processing unit 11, containing a plurality of information data such as, for example, a code identifying the vehicle 3, a number of credit card from which to withdraw the sum expected for the toll or a pre-paid credit from which to deduct the sum corresponding to the toll.
  • a payment system of the toll provided according to the teachings of the invention could, for example, envisage, differentiated tariffs according to the lane on which the vehicles have travelled as far as the detection station, for example a high tariff for those vehicles that are travelling on the left-hand lane 6 and a lower one for the ones that are travelling on the normal right-hand lane 4.
  • the on-board device 9 could be configured for generating an acoustic and/or visual warning signal that indicates to the user of the vehicle a condition of approach to a toll point associated to an area and/or to a stretch of road subject to payment, delimited by the detection stations.
  • all the detection stations could be configured to communicate with a remote operating centre (not illustrated in the figure) configured, for example, for managing the operations of payment of the toll or for monitoring the conditions of practicability of the individual lanes of a motorway.
  • a remote operating centre (not illustrated in the figure) configured, for example, for managing the operations of payment of the toll or for monitoring the conditions of practicability of the individual lanes of a motorway.
  • the advantage of the system and of the method of the invention are a low infrastructural impact, and the economic advantages and reliability that derive from the use of a technology, operation of which does not depend upon climatic conditions or conditions of visibility.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • Finance (AREA)
  • Traffic Control Systems (AREA)
EP06425284A 2006-04-28 2006-04-28 System zur Bestimmung des Fahrspurs eines Fahrzeuges entlang eines mehrspurigen Fahrweges Withdrawn EP1850302A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06425284A EP1850302A1 (de) 2006-04-28 2006-04-28 System zur Bestimmung des Fahrspurs eines Fahrzeuges entlang eines mehrspurigen Fahrweges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06425284A EP1850302A1 (de) 2006-04-28 2006-04-28 System zur Bestimmung des Fahrspurs eines Fahrzeuges entlang eines mehrspurigen Fahrweges

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EP1850302A1 true EP1850302A1 (de) 2007-10-31

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112132987A (zh) * 2020-09-27 2020-12-25 安徽达尔智能控制***股份有限公司 一种基于车路协同技术的智慧高速控制***

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5710566A (en) * 1993-06-01 1998-01-20 Robert Bosch Gmbh Method for implementing a wireless data exchange between a fixed station and moving objects particularly vehicles
US5805082A (en) * 1990-05-17 1998-09-08 At/Comm Incorporated Electronic vehicle toll collection system and method
US6219613B1 (en) * 2000-04-18 2001-04-17 Mark Iv Industries Limited Vehicle position determination system and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5805082A (en) * 1990-05-17 1998-09-08 At/Comm Incorporated Electronic vehicle toll collection system and method
US5710566A (en) * 1993-06-01 1998-01-20 Robert Bosch Gmbh Method for implementing a wireless data exchange between a fixed station and moving objects particularly vehicles
US6219613B1 (en) * 2000-04-18 2001-04-17 Mark Iv Industries Limited Vehicle position determination system and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112132987A (zh) * 2020-09-27 2020-12-25 安徽达尔智能控制***股份有限公司 一种基于车路协同技术的智慧高速控制***

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