EP1045358A2 - Système de transmission des temps de parcours de véhicules - Google Patents

Système de transmission des temps de parcours de véhicules Download PDF

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Publication number
EP1045358A2
EP1045358A2 EP00107882A EP00107882A EP1045358A2 EP 1045358 A2 EP1045358 A2 EP 1045358A2 EP 00107882 A EP00107882 A EP 00107882A EP 00107882 A EP00107882 A EP 00107882A EP 1045358 A2 EP1045358 A2 EP 1045358A2
Authority
EP
European Patent Office
Prior art keywords
transponder
motor vehicles
determining
individual
traffic
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.)
Granted
Application number
EP00107882A
Other languages
German (de)
English (en)
Other versions
EP1045358A3 (fr
EP1045358B1 (fr
Inventor
Thorsten Mieden
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1045358A2 publication Critical patent/EP1045358A2/fr
Publication of EP1045358A3 publication Critical patent/EP1045358A3/fr
Application granted granted Critical
Publication of EP1045358B1 publication Critical patent/EP1045358B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
    • 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 invention relates to a system for determining travel times of motor vehicles according to the preamble of the claim 1. Determining the presence of motor vehicles at certain points of a traffic route or also theirs Movement over these points plays a role in road traffic technology in a variety of different use cases a crucial role.
  • the used Methods are adapted to the respective application.
  • Such measurements are a special case of this area of application with light signal systems controlled as required, under Under certain circumstances, such traffic light systems, their signal program depending on the traffic density on the confluence Traffic routes is controlled.
  • Another special case are measurements of traffic load, which may also be only be carried out temporarily in order to be generally reliable To get values about the traffic volume, e.g. B. be used as a basis for traffic planning.
  • transponder cards are often used as The transponder card is stimulated at one measuring point by an inductive field to modulate this field.
  • the modulated field is received and evaluated by an evaluation device.
  • transponder cards have long been in different Form known for different applications.
  • simple Execution as in the example cited, are given by transponder cards on inductive excitation no more than a predetermined response signal.
  • This response signal can be completely uncoded and only activated in one receiver an acoustic warning signal or at best contains one Identification code. In the example cited this is only indicated that the response signal z.
  • Identification enable a motor vehicle at a toll booth should.
  • From US-A-5 804 810 is an example of a much more complex one Known solution to objects to be monitored that are transported in vehicles, for example Attach and use transponder card. So that's it possible, the marked object by means of electronic Transmitting / receiving devices also in moving motor vehicles to pursue on its way.
  • the transponder cards in this case a relatively complex electronic circuit with a transmitting and receiving part and a microprocessor consisting of a microcontroller and connected storage device. These transponder cards are able to perform more extensive functions when activated.
  • the transponder cards equipped with a GPS module GPS module his. This is the exact position of a transponder card document the assigned object.
  • the microprocessor is equipped with a peripheral interface, which is also used for data entry to update the Memory content of the transponder card is provided. Consequently is a bidirectional communication of a querying unit with the individual transponder cards in particular Larger scope possible if the latter additionally transmit / receive devices for infrared connections over shorter Distances as well as for radio connections over larger distances have.
  • the example shows that the possibilities modern circuit technology even complex structures Have transponder cards implemented. Inevitable but with increasing complexity it takes the transponder card integrated circuit also the weight and format of the Card too. This is mainly because of the corresponding to the circuit adaptable power supply.
  • Travel time is one of the fundamental parameters in traffic engineering, it is defined as the travel time between two locations on a route is a route-related Size. You can e.g. B as an input variable for traffic control procedures used or also used to get current out of it and the most accurate information possible about traffic flows to derive. With the importance of this size for traffic engineering it is natural that there are already a multitude of proposals became known the problem one on a current Traffic situation sufficiently precisely related travel time determination to solve.
  • the known methods which are designed to determine actual travel times, are based on route-related data acquisition.
  • route-related data acquisition There are two possible approaches.
  • One of these approaches is as Floating car "method is known. Individual vehicles are used, which are individually equipped with special measuring and transmission devices. Depending on the equipment of the on-board system, the cruising speed or travel time on individual sections of the route are calculated in the motor vehicle. The results are transmitted to a central unit The traffic data received from the individual motor vehicles is aggregated there, and the higher the current number of these individually equipped vehicles on the route, the higher the quality of the travel times determined in this way.
  • a second group of known systems respectively By contrast, the procedure for determining travel times is based on a preferably fixed, local data acquisition, which, for. B. is executed via loop detectors. Using feature vectors an attempt is made to type the passing vehicles to describe and sufficiently significant data for to win a bunch of vehicles. This data is sent to the next measuring point downstream in the direction of traffic transfer. There is now an attempt to determine the arrival time of the Vehicle groups by correlating the transmitted with the local measured data.
  • the present invention is therefore based on the object a system for determining travel times of motor vehicles of the type mentioned to create that with as much as possible simple means reliable but still so significant Vehicle description provides that travel times are more individual Motor vehicles on a route section with a sufficient Number of measurements with reasonable effort and are still to be recorded safely.
  • transponder cards in connection with the facilities that activate and read them out, is available with a wide range.
  • the transponder card is also a means that, among other things, already has been proposed for use in the motor vehicle if the practical application only begins sporadically.
  • existing specialist knowledge enables inexpensive and in terms of their dimensions and energy consumption to produce optimized transponder cards, on the other hand vehicle owners are becoming more familiar with this medium.
  • transponder cards it is particularly advantageous that the system to determine travel times flexibly to a used one Type of transponder cards can be easily adapted. So can use the transponder cards as passive units and accordingly the devices for activating the transponder cards be designed as induction loops, the Only one individual transponder card when activated Enable identification. So this just sets Transponder cards in a very simple embodiment ahead, the inexpensive to manufacture and operate are particularly economical. Such transponder cards are already used as season tickets for users of Toll roads used and could be easily for the further purpose for determining travel times to use. In this application, however, lies a larger share of expenses in the evaluating facilities of the system.
  • the one rewritable storage device for temporary storage an identification code for at least the last one passed control point and a time information about the Show the time of passing this checkpoint.
  • the evaluation devices at the control points be designed in such a way that it is within reach Transponder cards for sending out in their storage device currently saved data and for temporary storage of your own identification code.
  • Active Transponder cards of this type can be used, for example, for the commercial sector of road users of interest to meet its logistics needs for a fleet of To meet motor vehicles. In this case too the determination of the travel time the importance of an additional Function.
  • FIG 1 are schematic for one not shown in detail Traffic route two at a defined distance from each other, Control points successive in the direction of traffic K (n-1) and K (n) are shown.
  • the inspection bodies are expediently set up at the entrances and exits of the trunk road, but can also in critical sections of the route also be provided in between.
  • the motor vehicle 1 drives the same motor vehicle 1 in succession the control points located at a distance a from each other K (n -1) or K (n).
  • the motor vehicle 1 is equipped with a transponder card 2.
  • the transponder card 2 There is a plurality for the present purpose of embodiments of the transponder card 2 suitable. In the simplest case, it is a purely passive one Transponder card, which is only activated when activated Identification signal, d.
  • H. emits a signal based on which the motor vehicle is also individually identifiable. How will still be shown, but it is also advantageous, more complex trained transponder cards 2 to use.
  • This Free movement in the design of the transponder card 2 is a major advantage that it z.
  • FIG. 2 is a block diagram of an embodiment of the Evaluation device 4 shown, which is based on that in connection with it transponder cards 2 in their simplest Design are used.
  • the only system-related Requirements for the properties of the transponder cards 2 in this case is your individual identification option when passing the checkpoints z. B. K (n) by the evaluation device 4.
  • This means the evaluation device 4 receives this from an activated transponder card emitted identification signal and sets this in a converter 6 into a further processable identification code TAG ID around.
  • the evaluation device 4 is equipped with a clock, e.g. B. equipped with a radio clock 7, so that the time of Receipt of the respective identification code TAG-ID is fixed and linked from the latter to the corresponding time a defined data record 8 is to be formed.
  • each record is one Determining the travel time of the motor vehicle 1, although it is not yet possible. For travel time determination it is necessary to match each other, d. H. identified by the same identification code TAG-ID Records 8 of the different, preferably two each consecutive checkpoints in the direction of traffic, e.g. B. K (n - 1) and K (n) correlate and from the time information of the corresponding data records the individual Travel time of the associated motor vehicle 1 on the corresponding one To calculate route section.
  • the evaluation device 4 is equipped with a remote data transmission unit 9 equipped by means of which the local prepared data records 8 sequentially as data stream 8 (n) the control point K (n) to the downstream in the traffic direction adjacent control point or its evaluation facility be transmitted. The same goes for the evaluation device 4 (n) via another remote data transmission unit 9 'a data stream 8 (n-1) with corresponding data records the neighboring upstream in the direction of traffic Transfer control point K (n - 1).
  • the evaluation device 4 (n) equipped with a processing unit 10.
  • FIG 2 is shown schematically that the sequentially occurring Records of these two data streams are cached become.
  • the identification codes TAG-ID of the stored Records of both data streams 8 (n - 1) and 8 (n) are checked for agreement.
  • the travel time becomes the difference of the time information of the individual vehicle.
  • the in the Processing unit 10 are determined travel times either as individual values of anonymous motor vehicles or from time to time as average travel times by the individual Evaluation devices 4 to the central traffic control computer 5 transferred.
  • transponder card 2 used in the embodiment shown in FIG.
  • the structure the transponder card 2 in this embodiment is only reproduced schematically since it is assumed to be known can be.
  • the transponder card 2 is with a microcontroller 21 equipped, for example, connected to it Units run over a bus system 22. Of the units connected to the microcontroller 21 are in Figure 3 only those units specified in the present Use case are of particular interest.
  • the converter 24 runs over a Radio modem 25 with the correspondingly configured evaluation device 4 a control point now bidirectional.
  • the radio modem 25 but also the microcontroller 21 itself and the units 23, 24 connected to it Considerable power consumption in the active operating state.
  • an activation unit 27 and an activation sensor 28 are shown. With the units 26 to 28 the power consumption is achieved to optimize the transponder card 2.
  • the microcontroller 21 and the units connected to it via the bus system 22 23 and 24 and the radio modem 25 are normally in reset an energy-saving idle state.
  • the activation unit 28 via the activation sensor 27 controlled and caused the electronic units to control the transponder card in the active operating state.
  • the transponder card 2 is capable of Information about the radio modem 25 with the evaluation device 4 exchange. Above all, this affects information which are stored in the circulation memory 23.
  • data records should have an identifier field NN and a date field Dat.
  • identifier field NN an identifier is stored on the basis of which one checkpoint previously passed must be identified.
  • Date field Dat is the point in time at which the corresponding control point has been passed.
  • the circular memory 23rd comprises a plurality of such storage locations, so that this memory content shows a travel course over a plurality of Route sections can be reconstructed. For the real one Travel time determination on individual sections of the route is however, this is of secondary importance at best.
  • the evaluation device is called up 4 via the radio modem 25 only the last one in the circulation memory stored data record or already by the microcontroller 21 the travel time for the last trip Route section is calculated and transmitted.
  • the electronics of the transponder card 2 too includes a radio clock, not shown in Figure 3. Otherwise can also receive the time information from the evaluation device 4 can be delivered. Appropriately in the the evaluation device 4 transmits the identifier transferred to the last control point passed. In this Trap can the evaluation device 4 passing motor vehicles regardless of the direction of traffic.
  • the evaluation device 4 gives its own identifier to the transponder card 2, which is then in the corresponding Storage space of the circulation memory 23 together with the current one Time information is saved. Once these operations are completed, the controlled power supply unit continues 26 the electronics of the transponder card 2 in the energy-saving Hibernation back.
  • transponder cards 2 can be used in a system designed according to the invention for determining travel times of motor vehicles.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Multiple Motors (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
EP00107882A 1999-04-12 2000-04-12 Système de transmission des temps de parcours de véhicules Expired - Lifetime EP1045358B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19916355 1999-04-12
DE19916355 1999-04-12

Publications (3)

Publication Number Publication Date
EP1045358A2 true EP1045358A2 (fr) 2000-10-18
EP1045358A3 EP1045358A3 (fr) 2002-10-23
EP1045358B1 EP1045358B1 (fr) 2006-08-02

Family

ID=7904222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00107882A Expired - Lifetime EP1045358B1 (fr) 1999-04-12 2000-04-12 Système de transmission des temps de parcours de véhicules

Country Status (5)

Country Link
EP (1) EP1045358B1 (fr)
AT (1) ATE335268T1 (fr)
DE (1) DE50013246D1 (fr)
DK (1) DK1045358T3 (fr)
ES (1) ES2267429T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003034370A1 (fr) * 2001-10-15 2003-04-24 Tagmaster Ab Procede de controle de trafic
WO2004107274A1 (fr) * 2003-05-30 2004-12-09 Daimlerchrysler Ag Systeme pour determiner des frais de peage relatifs a l'utilisation de tronçons de voies d'un reseau routier et procede correspondant
WO2005004080A1 (fr) * 2003-07-08 2005-01-13 Tes Teleinformatica E Sistemi S.R.L. Systeme de detection automatique et de rapport d'un embouteillage soudain
WO2006035357A2 (fr) * 2004-09-28 2006-04-06 Koninklijke Philips Electronics N.V. Procede et systeme d'evaluation de proximite

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007061941A1 (de) 2007-12-21 2009-06-25 Siemens Ag Messsystem und Verfahren zur Erfassung fahrzeugbezogener Daten

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4350970A (en) * 1979-11-13 1982-09-21 Siemens Aktiengesellschaft Method for traffic determination in a routing and information system for individual motor vehicle traffic
US4714925A (en) * 1984-12-31 1987-12-22 Emx International Limited Loop data link
US5289183A (en) * 1992-06-19 1994-02-22 At/Comm Incorporated Traffic monitoring and management method and apparatus
WO1995009408A2 (fr) * 1993-09-29 1995-04-06 Sensored Security Systems Limited Systeme de localisation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4350970A (en) * 1979-11-13 1982-09-21 Siemens Aktiengesellschaft Method for traffic determination in a routing and information system for individual motor vehicle traffic
US4714925A (en) * 1984-12-31 1987-12-22 Emx International Limited Loop data link
US5289183A (en) * 1992-06-19 1994-02-22 At/Comm Incorporated Traffic monitoring and management method and apparatus
WO1995009408A2 (fr) * 1993-09-29 1995-04-06 Sensored Security Systems Limited Systeme de localisation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003034370A1 (fr) * 2001-10-15 2003-04-24 Tagmaster Ab Procede de controle de trafic
WO2004107274A1 (fr) * 2003-05-30 2004-12-09 Daimlerchrysler Ag Systeme pour determiner des frais de peage relatifs a l'utilisation de tronçons de voies d'un reseau routier et procede correspondant
WO2005004080A1 (fr) * 2003-07-08 2005-01-13 Tes Teleinformatica E Sistemi S.R.L. Systeme de detection automatique et de rapport d'un embouteillage soudain
WO2006035357A2 (fr) * 2004-09-28 2006-04-06 Koninklijke Philips Electronics N.V. Procede et systeme d'evaluation de proximite
WO2006035357A3 (fr) * 2004-09-28 2006-05-11 Koninkl Philips Electronics Nv Procede et systeme d'evaluation de proximite

Also Published As

Publication number Publication date
EP1045358A3 (fr) 2002-10-23
DK1045358T3 (da) 2006-11-13
DE50013246D1 (de) 2006-09-14
ATE335268T1 (de) 2006-08-15
EP1045358B1 (fr) 2006-08-02
ES2267429T3 (es) 2007-03-16

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