EP0676735B1 - Dispositif de surveillance du trafic - Google Patents

Dispositif de surveillance du trafic Download PDF

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Publication number
EP0676735B1
EP0676735B1 EP95104927A EP95104927A EP0676735B1 EP 0676735 B1 EP0676735 B1 EP 0676735B1 EP 95104927 A EP95104927 A EP 95104927A EP 95104927 A EP95104927 A EP 95104927A EP 0676735 B1 EP0676735 B1 EP 0676735B1
Authority
EP
European Patent Office
Prior art keywords
elements
data
field bus
set forth
bus
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.)
Expired - Lifetime
Application number
EP95104927A
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German (de)
English (en)
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EP0676735A1 (fr
Inventor
Claus Dr. Kühnel
Christian Hunziker
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.)
Robot Visual Systems GmbH
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Robot Visual Systems GmbH
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Publication date
Application filed by Robot Visual Systems GmbH filed Critical Robot Visual Systems GmbH
Publication of EP0676735A1 publication Critical patent/EP0676735A1/fr
Application granted granted Critical
Publication of EP0676735B1 publication Critical patent/EP0676735B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
    • G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules

Definitions

  • the invention relates to a device for traffic monitoring according to the preamble of claim 1.
  • Devices for traffic monitoring are the road user well known. Typical examples of such devices are traffic lights, red light monitoring systems on the above Traffic lights, measuring devices for speed of vehicles, traffic counting devices, etc.
  • Such devices can be installed fixed, portable or attached Be set up on board vehicles. They usually point out an element that is in active connection with the traffic situation stands, such as B. a sensor or an image capture device.
  • Such Elements are like one another or with other elements e.g. Data storage, elements for data transmission such as Lines etc. connected.
  • Such known devices for Traffic monitoring is usually as far as always possible in a functional unit that includes as many components as possible summarized so that only those elements such as. Sensors that are naturally used in traffic on one certain place must be arranged, outside the mentioned Functional unit lie. Easier for portable systems this is the transport and its protection during transport, when stationary installed systems, the above arrangement is said to provide better protection before external influences of nature (weather) or humans To offer (violence).
  • EP 0 303 847 describes a stationary device known for traffic surveillance, the one in the road surface misplaced sensor, which is arranged in the area of a traffic light is, as well as a flash unit, a camera and an evaluation unit having. Except the sensor and a connecting line are all elements in a housing on a column on the roadside accommodated.
  • a disadvantage of this arrangement is that, for example the elements mentioned are in a firm bond and only for a single task within the broad Area of traffic monitoring can be used.
  • Another stationary device is known from US-A-4,802,115 known for traffic monitoring, in which several similar Light signal elements and several sensors of the same type in common are connected to a control unit via a ring line.
  • the signal elements and the sensors are controlled digitally, where an identification code with seven bits word length and a Data code with a bit length of the individual selection and enable the actuation of the individual elements or their function.
  • a disadvantage of this arrangement is that the individual elements only a single function defined once can exercise.
  • a light signal element only be put in one of two states, i.e. a The lamp can be lit or extinguished.
  • US Patent 4,802,115 describes a multi-element communication system central intelligence to control a system. Furthermore, a Motor vehicle control system described, the participants such as a Brake pedal switch or a pump for a wiper each a local Intelligence (microprocessor) is assigned.
  • a Local Intelligence microprocessor
  • the Communication channel is a device for serial transmission of digital data between the components of the overall system, who have local intelligence.
  • the communication channel is a well-known from automotive engineering Fieldbus that delivers short messages in real time on two lines to the participants. Participant or just that other elements or components in this device for example different types of sensors such as radar sensors, Light barriers, induction loops etc., or elements such as data storage, Cameras, controls, etc.
  • the administrative unit Manage and monitor all calibration data so that it is secured is that the overall system always works with components, that are properly calibrated.
  • Another, by the named Networking is given by changing the Characteristics and / or working methods of the individual participants Change of configuration parameters and / or by change of the program sequence itself. and / or program data from the management unit by a Send the "Download" command to the individual participants.
  • the device according to the invention has various advantages on. These consist in particular in that the electrical Connections can be greatly reduced and the individual Components via "sockets" or equivalent Elements easily connected to the data transmission system can be. Thus, for example, each component is only still connected to two data lines. A configuration and initialization is for all connected components together via the management system (host) or the administrative unit of the bus, so it is now essential it is easier to replace individual elements. Can also now in such a system data submitted by a participant or other participants are used at the same time which are supplied with this data for other purposes as well to be able to use. It also makes it easier to do the above Device for traffic monitoring in a higher-level Classify traffic management system.
  • Figure 1 shows a device for traffic monitoring, for example a known radar sensor 1, a photo part 2, a data memory 3 and an operating unit 4. These elements 1, 2, 3, 4 and 6 shown are over one Bus 5, connected to each other and thus form a traffic monitoring system. One also connected to bus 5 Administrative unit 6, a so-called "host" ensures by definition Operation of the entire system.
  • a device for traffic monitoring for example a known radar sensor 1, a photo part 2, a data memory 3 and an operating unit 4.
  • the elements 1, 2, 3, 4 and 6 mentioned are suitable Interfaces 1a, 2a, 3a, 4a and 6a connected to bus 5, which ensure that the data to be exchanged according to the Protocol specification can be transmitted safely.
  • bus 5 in A CAN fieldbus for example, and the Interfaces mentioned 1a to 4a and 6a are under the name CAN controller known.
  • Such a bus preferably has two lines for real-time transmission of short News in series.
  • Other bus systems are also conceivable so that through a suitable choice the complexity of the connected Elements and their availability are taken into account can.
  • the elements 1 to 4 mentioned and the associated elements Interfaces 1a to 4a can also store 1b and 1c, 2b and 2c, etc., depending on the design of the elements mentioned only one of the two stores mentioned is available can be.
  • These memories 1b, 1c, etc. preferably contain So-called configuration data, i.e. data that, for example affect the setting of the device that the concerned Element forms.
  • the memories mentioned can also be used by user programs or configuration data and user programs saved.
  • the management unit 6 can Have memory 6b, the configuration data and user programs for the other elements or bus participants. This Configuration data and / or user programs can be found at Requirements in the memory 1b, 1c, 2b, 2c, the elements are loaded.
  • the management unit 6 can be configured in the manner shown in FIG Plant can be assigned very different tasks.
  • the monitoring of the definition described above Operating ensures that only those approved for operating Elements can be operated on the bus and their correct functioning is monitored. Are unapproved items on Bus detected, then this indicates illegal manipulation the plant, and there can be previously defined subsequent reactions to be triggered. In the simplest case, this is deactivation the plant.
  • Management of data from legal entities Elements of the system can also be designed in this way be that the system can only be operational if all elements subject to mandatory calibration also within the permissible operating time. Approaches one of these Elements of the date of the re-verification given by the verification obligation, so warnings issued by the system on this Draw attention to the fact.
  • a given configuration of the elements or also of the whole stored in the respective element User program can by higher-level services the administrative unit can be changed.
  • Such a parent Service consists for example in the so-called “download” of configuration and / or program parts from the administrative unit 6 via the bus 5 into one or more of the elements 1, 2, 3 or 4. This measure enables the system to be switched on at any time Different circumstances can be adjusted by looking at data or commands arbitrarily between each of the elements mentioned 1 Have 4 and 6 exchanged over the same lines.
  • Figure 2 shows a device similar to Figure 1, in which but a larger number of elements with each other via a bus 7 are connected.
  • These elements are a sensor 8, which acts as a radar sensor, designed as a light barrier or as an induction loop etc. can be a red light monitoring system 9, a device 10 for event linking, a radio clock 11, a position detection system 12, a photo part 13, a data memory 14, a control unit 15, a display 16, a modem 17, any one another part 18 and a bus management 19.
  • This shows the multitude and the variety of possible participants in such Bus system, which are offered here. These participants too have interfaces in a known manner, as they are for the sake of simplicity here only for elements 8 and 14 with 8a and 14a are designated and indicated.
  • the structure of these elements corresponds to that of the elements from FIG. 1.
  • FIG. 3 shows an inventive device for traffic monitoring, such as at a crossroads 20 can be provided.
  • This has four traffic lights 21, 22, 23 and 24 on. These are each with an interface 21a, 22a, 23a and 24a connected.
  • Each of the lanes has, for example a sensor 25, 26, 27 and 28, each of which also has an interface 25a, 26a, 27a and 28a.
  • In one of the lanes is e.g. also an induction loop 29 embedded, which also has its interface 29a.
  • Next is next to one or several lanes e.g. also a radar sensor 30 with its Interface 30a arranged.
  • An image capture device 31 with its interface 31a and a timer 32 with interface 32a supplement this arrangement in a meaningful way.
  • the bus 33 also has an administrative unit 34 with an interface 34a, which all processes in the bus 33rd coordinates and has a memory 42 in which user programs and configuration data for the connected Elements can be saved.
  • FIG. 4 shows the arrangement of a device according to the invention on a vehicle 35.
  • This system includes, for example Speedometer 36, a radar sensor 37, an image acquisition unit 38, a management unit 39 and a connection 40a for a further interchangeable unit 41 to one Bus 40, which can have different functions.
  • Speedometer 36 for example Speedometer 36
  • a radar sensor 37 for example, a radar sensor 37
  • an image acquisition unit 38 for example, a radar sensor 37
  • an image acquisition unit 38 for example a radar sensor
  • a management unit 39 for a further interchangeable unit 41 to one Bus 40, which can have different functions.
  • this Systems can also include other elements, for example that are already present in the vehicle, such as the headlights used to support the imaging unit 38 could be used or one already existing vehicle speedometer.
  • This connection with vehicle-specific Elements is provided by the unit 41 also hinted at.
  • FIG. 5 shows in more detail the structure of part of element 2, as is already known from FIG. 1. This structure applies but also for parts of the other elements 1, 3 and 4.
  • the element 2 is in a known manner via the interface 2a connected to bus 5.
  • An internal bus 43 connects the Interface controller 2a with the memories 2b and 2c as well with a data processing component, for example a microcontroller 44, which consists of a microprocessor 45 and a Interface 46 for peripheral and time functions exists.
  • the data to be processed originate in the data processing component 44 from the bus 5 and serve to control the operation of the relevant element 1, 2, 3 etc. according to a program.
  • connections 47 are used to connect the interface 46 with special provided time code transmitters or peripheral elements.
  • the traffic lights 21 to 24 switch according to a predetermined one Program as known from a red phase to a green phase and back.
  • a red light violation of a road user are found, the sensors 25 to 28 with the Traffic lights 21 to 24 work together.
  • actuation of the sensor 28 as long as the traffic light 21 is red indicates a violation.
  • the image capture device 31 can be activated and, for example, an image the offender together with the red traffic light 21.
  • the time taken by the Indicates clock 32 At the same time, the time taken by the Indicates clock 32. That means in a very short time Period of time data can be present in the bus 33, the position of the Traffic light 21, the position of the sensor 28, and the time.
  • An induction loop 29 is also connected to the bus 33, which control the green and red phases of the traffic lights 21 to 24 can affect. So can the just described Operations, for example, from a count of over the induction loop 29 dependent on road users be made.
  • the current can via the radar sensor 30 Speed of a passing vehicle measured become.
  • the sensors 25-30, the traffic lights 21-24, the image capture device 31, the clock 32 are all with local intelligence equipped, as shown schematically in Figure 5.
  • the microcontroller 44 operates with the memories 2b and 2c so together that, for example, the configuration data and User programs that are tailored to each element these memories 2b, 2c accessed by the microcontroller can be so that the element performs the intended function.
  • This can be, for example, that the image capture device 31 by corresponding information from bus 5 carries out a work program that consists of that in the picture also the speed information from the radar sensor 30 and time information from the timer 32 appears. This allows it each element, according to the pre-stored or over it the bus 5 transmitted by the management unit 6 in react intelligently and comprehensively to a specific situation.
  • the timer 32 show the time to the population via a large display and additionally, if necessary, the time via bus 33 of the administrative unit 34 report.
  • the induction loop 29 can on the one hand in a system for controlling traffic lights can be integrated and also for initiating a standby position of the radar sensor 30 are shared.
  • an image capture unit 31 can alternate with the radar sensor 30 or with the Traffic lights 21 work together, etc. This allows you to Few elements perform more tasks and functions than before common.
  • Such a fieldbus as is preferably used as a serial data transmission element is always immediately on Interfaces 21a, etc. connected for the data as The transmitter and receiver work. This results in a clearly structured and secure communication between the participants.
  • the bus transmits the messages from the participants practically as soon as these concern.
  • the device can thus be used in court Generate evidence and the conditions for homologation are also given.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Alarm Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)

Claims (7)

  1. Dispositif de contrôle du trafic présentant des éléments (1, 2, 3, 4, 28, 29, 30, 31) de détection de la circulation dont chacun des éléments peut exercer une fonction précise et dont au moins un élément est en relation active directe avec la circulation, caractérisé par le fait qu'un bus de terrain (5, 33) est relié aux éléments et est développé et disposé en vue de la transmission de données numériques entre les éléments (1, 2, 3), que les éléments présentent à chaque fois un composant de traitement de données (44) qui est prévu pour le traitement de données sortant du bus de terrain (5, 33) et pour la commande du mode de fonctionnement de l'élément respectif conformément à un programme, et qu'une unité de gestion (6, 34) munie d'une mémoire (6b, 42) pour des données de configuration et/ou des programmes utilisateur est associée au bus de terrain (5, 33),
       l'unité de gestion
    contrôlant les éléments nécessaires à une application prévue du dispositif pour savoir s'ils sont raccordés et/ou s'ils assurent un échange des données correct et/ou,
    vérifiant si des éléments non autorisés pour l'application prévue communiquent avec le bus de terrain.
  2. Dispositif selon la revendication 1, caractérisé par le fait que le bus de terrain se compose d'une conduite présentant au moins un fils et raccordée à chaque élément (1, 2, 3, 4, 21, 28, 29, 30, 31) du dispositif par l'intermédiaire de chaque fois une unité d'entrée/sortie (1a, 2a, 3a, 4a, 21a, 28a, 29a, 30a, 31a).
  3. Dispositif selon la revendication 1, caractérisé par le fait que les éléments (1, 2, 3, 4) présentent des mémoires (1b, 2b, 3b, 4b) pour des données de configuration et/ou programmes utilisateur.
  4. Dispositif selon la revendication 1, caractérisé par le fait que le bus de terrain (33) est relié à une mémoire centrale (42) dans laquelle sont logées, de façon susceptible d'être interrogées, des données de configuration et/ou des programmes utilisateur pour chacun des éléments.
  5. Dispositif selon la revendication 1, caractérisé par le fait que le bus de terrain (5, 33) est disposé conjointement avec les éléments sur un véhicule et est relié aux éléments spécifiques au véhicule.
  6. Dispositif selon la revendication 1, caractérisé par le fait que le composant de traitement de données (44) est relié aux mémoires (2b, 2c) pour programmes utilisateur et/ou données de configuration.
  7. Dispositif selon la revendication 6, caractérisé par le fait que le composant de traitement de données (44) se compose d'un microprocesseur (45) et d'une interface (46) pour des fonctions périphérique et temporelle.
EP95104927A 1994-04-07 1995-04-03 Dispositif de surveillance du trafic Expired - Lifetime EP0676735B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH103394 1994-04-07
CH1033/94 1994-04-07
CH103394 1994-04-07

Publications (2)

Publication Number Publication Date
EP0676735A1 EP0676735A1 (fr) 1995-10-11
EP0676735B1 true EP0676735B1 (fr) 2002-12-04

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EP95104927A Expired - Lifetime EP0676735B1 (fr) 1994-04-07 1995-04-03 Dispositif de surveillance du trafic

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EP (1) EP0676735B1 (fr)
AT (1) ATE229212T1 (fr)
DE (1) DE59510482D1 (fr)
ES (1) ES2188623T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100403020B1 (ko) * 1996-12-26 2006-03-24 엘지산전 주식회사 날짜제어에있어서확장된시간을이용하는방법
KR100618387B1 (ko) 2004-11-09 2006-08-30 서림산업(주) 양방향 차량흐름정보를 이용한 교통제어시스템
DE102007051801A1 (de) * 2007-10-26 2009-04-30 Robot Visual Systems Gmbh Verkehrsüberwachungssystem

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4802115A (en) * 1985-05-17 1989-01-31 The Dow Chemical Company Multi-unit communicating system
DE3808135A1 (de) * 1988-03-11 1989-09-28 Kloeckner Moeller Elektrizit Speicherprogrammierbares steuerungssystem

Also Published As

Publication number Publication date
ES2188623T3 (es) 2003-07-01
EP0676735A1 (fr) 1995-10-11
DE59510482D1 (de) 2003-01-16
ATE229212T1 (de) 2002-12-15

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