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WO1993021617A1 - Appareil de surveillance de vehicules - Google Patents

Appareil de surveillance de vehicules Download PDF

Info

Publication number
WO1993021617A1
WO1993021617A1 PCT/GB1993/000802 GB9300802W WO9321617A1 WO 1993021617 A1 WO1993021617 A1 WO 1993021617A1 GB 9300802 W GB9300802 W GB 9300802W WO 9321617 A1 WO9321617 A1 WO 9321617A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
monitoring apparatus
images
operative
video
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.)
Ceased
Application number
PCT/GB1993/000802
Other languages
English (en)
Inventor
David Lionel Swale
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.)
TRAFFIC TECHNOLOGY Ltd
Original Assignee
TRAFFIC TECHNOLOGY Ltd
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 TRAFFIC TECHNOLOGY Ltd filed Critical TRAFFIC TECHNOLOGY Ltd
Publication of WO1993021617A1 publication Critical patent/WO1993021617A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G07B15/02—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points taking into account a variable factor such as distance or time, e.g. for passenger transport, parking systems or car rental systems
    • 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
    • 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
    • G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
    • G08G1/054—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed photographing overspeeding vehicles

Definitions

  • the present invention relates to vehicle monitoring apparatus and in particular to vehicle monitoring apparatus which provides an image of a vehicle.
  • the present invention provides vehicle monitoring apparatus comprising vehicle detection means to detect the presence of a vehicle and provide a signal under predetermined conditions, a first video means operative to provide a telephoto image of said vehicle in response to said signal, and a second video means operative to provide a wide angle image of said vehicle and its surroundings in response to said signal.
  • the first and second video means comprise respective first and second video cameras, wherein said video cameras have different focal lengths to provide said images of said vehicle.
  • the vehicle monitoring apparatus preferably includes a remote monitoring station, and communication means operative to transmit said images from said first and second video means to said remote monitoring stations.
  • vehicle monitoring apparatus comprises vehicle detection means to detect the presence of a vehicle and provide a signal under predetermined conditions; video means to provide an image of said vehicle in response to said signal; a remote monitoring station; and communication means operative to transmit said image to said remote monitoring station.
  • image processing means are provided to digitise the images before transmission, and memory means are provided to hold the digitised images.
  • the image processing means preferably includes compression means to compress the digitised images before transmission.
  • the communication means providing a link between the video camera and the remote monitoring station can be a modem communicating over a telephone line or a radio link.
  • the remote monitoring station is operative to receive the images and at least one of display print and record the images.
  • the remote monitoring station is preferably capable of controlling the video cameras and the vehicle detection means via the telephone line or radio link.
  • the monitoring station is capable of communicating with several video cameras and vehicle detection means provided at different locations.
  • an operator at the remote monitoring station can monitor several different locations and control the video cameras at these locations.
  • the remote monitoring station includes central processing means and the central processing means includes decompression means to decompress the received compressed images.
  • the central processing means is adapted to be linked to a database containing information on vehicles to be detected.
  • the vehicle detection means is operative to detect the presence of a vehicle at a location past traffic control means at which said vehicle should have halted.
  • the vehicle detection means includes data processing means operative to calculate the speed of a vehicle and provide a signal only if a predetermined threshold speed is exceeded.
  • first and second video cameras are used, in one embodiment they are operative to provide the images separated by a predetermined time period, which enables a calculation of the speed of the vehicle to be made using the images.
  • alphanumeric data is superimposed on the images.
  • the alphanumeric data can comprise at least one of speed, time, date, location and direction of travel.
  • the first and second video cameras are operative to provide the images simultaneously.
  • the present invention provides for_ the remote monitoring of, for instance roads, using remotely controlled video cameras.
  • a single image or pair of images from a pair of video cameras is obtained digitally using a frame grabbing technique which is triggered by the detection of the presence of a vehicle to be imaged.
  • a first and second video means providing respectively a telephoto and wide angle image of the vehicle allows for the use of cheap and low resolution video cameras. High resolution is only required to identify for instance the number plate of a vehicle passing the monitoring apparatus. This information is provided in the telephoto image whereas the wide angle image provides information on the location of the vehicle. If the two images provided by the two video cameras are taken at different times, then with knowledge of the time period separating the two images, the speed of the vehicle being monitored can be calculated.
  • Figure 1 is an illustration of the vehicle monitoring apparatus located at the roadside with a remote monitoring station according to one embodiment of the present invention
  • FIG. 2 is a schematic diagram of the construction of the vehicle monitoring apparatus according to one embodiment of the present invention.
  • FIG. 1 this diagram illustrates one application of the present invention.
  • a roadside cabinet 1 is placed in the central reservation of a dual carriageway.
  • vehicle detection means which preferable comprises detectors in slots in the road surface about 20 metres from the roadside cabinet 1.
  • Any convenient means for detecting the presence of a vehicle can be used and alternatively light beams could be used for example.
  • the roadside cabinet 1 is linked via communication means to a remote monitoring station.
  • the communication means comprises a telecommunication link 3.
  • a processor is provided together with a monitor 5, printer 6 and" keypad 7.
  • images being transmitted from the roadside cabinet can be displayed, printed or stored on for instance a worm drive disk store.
  • the vehicle detection means 2 comprises detectors in two slots in the road which enable the speed of the vehicle to be calculated. If a predetermined speed limit is exceeded by a vehicle passing the vehicle detection means 2, then a video camera within the roadside cabinet 1 captures an image of the vehicle. The signal from the vehicle detection means 2 triggers not only a calculation of the speed of the vehicle, but also the opening of the video camera shutter to start recording. An image of the vehicle is digitised and overlaid with alphanumeric data such as speed, time, date, location, lane, and direction of motion. The digitised video image is then compressed and stored in a buffer memory ready for subsequent transmission via a telephone line to the remote monitoring station 4.
  • a number of roadside locations can be controlled from a single remote monitoring station 4.
  • the operator being able to select the site under observation from the control desk.
  • the operator can switch lanes at a particular site, transmit a test signal at any site and switch on or off any camera from the control desk.
  • the composite data arriving at the control desk can be viewed on a monitor, stored for future analysis and/or printed out as a hard copy by means of a video printer.
  • the roadside cabinet 1 houses two video cameras, one having a higher magnification lens than the other.
  • the cameras can be mounted on a turntable driven by a stepper motor to enable the cameras to be directed at desired lanes and also to permit viewing of traffic travelling in either direction on the road.
  • two images are provided of a vehicle exceeding a predetermined speed limit past the vehicle detection means 2.
  • One image is a telephoto image giving a closer view of the vehicle, whilst the other is a wide angle image providing a image not only of the vehicle but also the surrounding location.
  • the purpose of providing a telephoto image of the vehicle in addition to the wide angle image which includes the vehicle surroundings, is to enable identification of the vehicle using the registration number plate.
  • Normal video cameras provide images of insufficient resolution to be able to resolve the registration number plate when an image is taken of the vehicle and its surroundings. It is not however insufficient for legal evidence to prove violation of traffic regulations to merely provide an image of a vehicle without its surroundings.
  • the provision of the telephoto image and the wide angle image overcomes this problem.
  • the roadside cabinet 1 can be provided with an -illuminating source if required. This could be a continuous infrared source for example.
  • the most convenient method providing communication between the roadside cabinet 1 and the remote monitoring station 4 is using serial data via a telephone line and modems. Data compression and decompression can be used to reduce the volume of data to be transmitted and stored.
  • FIG. 2 is a schematic illustration of the construction of the vehicle monitoring apparatus according to one embodiment of the present invention.
  • Vehicle detection means comprises vehicle sensors 10 which provide inputs to a sensor interface 20. The lane on the road on which vehicles are being detected can be selected and the sensor signals are processed by the interface 20. The sensor signals are then passed into the roadside cabinet 1 via an optolink 40.
  • data processing means 50 is provided to calculate the speed and output a .signal if the speed exceeds a predetermined memorised threshold.
  • the predetermined threshold speed can be set using the keypad 60.
  • the keypad 60 can also be used to input such data as time, date, location, lane and direction of travel. This can be displayed on a data display 70.
  • a signal is sent via an RS232 link to the image processing means 90 to capture a frame from the video cameras 8a and 8b.
  • the video frames from the video cameras 8a and 8b are digitised and compressed before being stored in a buffer memory.
  • a local video monitor 100 can be provided within the roadside cabinet for local monitoring of the images.
  • the data processing means 50 can also superimpose alphanumeric data on the image as shown in Figure 1.
  • the alphanumeric data can be for instance the calculated speed, time, date, location, lane, and direction of travel.
  • Communication means is provided for communication to a remote control station in the form of an RS232 link from the image processor 90 to a modem or line driver 11.
  • the modem or line driver 11 is then linked to a modem or line driver 12 in the remote monitoring station by a telephone line 3.
  • the roadside cabinet 1 is also provided with both a mains power supply 14 and a battery 15.
  • the mains power supply 14 also includes a battery charger to maintain the charge of the battery 15,
  • the roadside cabinet 1 also includes temperature sensing and control circuitry 16 to provide automatic cut-out if the temperature range exceeds or falls below specified temperatures.
  • a modem or line driver 12 linked to the roadside cabinet by the telephone line 3.
  • the modem or line driver 12 is linked to a central processor 17 via an RS232 link.
  • the central processor 17 decompresses the received compressed digitised image and can enhance the contrast.
  • the central processor 17 is provided with a video monitor 5 and a video printer 6.
  • Control of the arrangement in the roadside cabinet 1 can be provided by inputting control commands using the keypad 7 which is also provided with a data display 22. These are connected to the central processor 17 via an RS232 link.
  • the video cameras 8a and 8b can be switched on or off from the remote monitoring station 4 and the lane on the road being monitored can also be changed.
  • the central processor 17 can be linked to a database such as that of the DVLC in order to obtain information on vehicles being detected.
  • the remote monitoring station includes power supplies 23 for the circuitry.
  • vehicle detection means can detect the presence of a vehicle at a position past the traffic lights, whereupon a video image is captured and digitised by the video cameras. Either a single video image from a single video camera or a telephoto image and a wide angle image from two video cameras can be taken. Using the two video images taken at different times, it is possible not only to detect that a vehicle has "jumped" the red light, but also to detect using the images the speed at which the vehicle negotiated the traffic lights. This information is immediately available to the operator in the remote monitoring station. Thus this information can be acted upon quickly if desired.
  • the present invention can thus provide for remote monitoring of vehicles using video cameras of low resolution.
  • the cost penalty of using a second camera is not such as to be a major disadvantage when the total system cost is considered.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Finance (AREA)
  • Traffic Control Systems (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

Appareil de surveillance de véhicules comprenant un moyen (2) de détection de véhicule permettant de déterminer la présence d'un véhicule et d'émettre un signal dans des conditions prédéterminées. Une première caméra vidéo (8A) permet d'obtenir une image téléphotographique du véhicule en réaction au signal et une deuxième caméra vidéo (8B) permet d'obtenir une image à grand angle du véhicule et les environs en réaction au signal. Les caméras peuvent être positionnées dans un poste (1) situé près de la route et commandées et contrôlées depuis un poste (4) de surveillance à distance. Ce montage permet d'obtenir une image de la plaque du véhicule ainsi qu'une image à grand angle des environs sans recourir à l'utilisation d'une caméra vidéo à haute résolution.
PCT/GB1993/000802 1992-04-16 1993-04-15 Appareil de surveillance de vehicules Ceased WO1993021617A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9208408A GB2266398A (en) 1992-04-16 1992-04-16 Vehicle monitoring apparatus
GB9208408.6 1992-04-16

Publications (1)

Publication Number Publication Date
WO1993021617A1 true WO1993021617A1 (fr) 1993-10-28

Family

ID=10714158

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1993/000802 Ceased WO1993021617A1 (fr) 1992-04-16 1993-04-15 Appareil de surveillance de vehicules

Country Status (3)

Country Link
AU (1) AU3959993A (fr)
GB (1) GB2266398A (fr)
WO (1) WO1993021617A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0621572A1 (fr) * 1993-04-20 1994-10-26 Gatsometer B.V. Méthode et dispositif pour l'enregistrement électronique d'un incident par exemple une infraction au code de la route
DE4446642A1 (de) * 1994-12-19 1996-06-20 Teledrive Telematik Im Verkehr Vorrichtung zur automatischen Kontrolle des Zuganges von Fahrzeugen zu einem Verkehrsraum
DE19508338A1 (de) * 1995-03-09 1996-09-12 Leica Sensortechnik Gmbh Verfahren und Vorrichtung zur Messung, Aufzeichnung und Wiedergabe von Meßinformationen eines Meßobjektes
DE19516083A1 (de) * 1995-05-03 1996-11-07 Albrecht Buchner System zur Überwachung des Straßenverkehrs
WO1997037336A1 (fr) * 1996-03-29 1997-10-09 Commonwealth Scientific And Industrial Research Organisation Systeme de detection d'avion
DE19624542A1 (de) * 1996-06-20 1998-01-02 Siegenia Frank Kg Vorrichtung zur Einbruchsmeldung bzw. Zugangserfassung
US5974158A (en) * 1996-03-29 1999-10-26 The Commonwealth Of Australia Commonwealth Scientific And Industrial Research Organization Aircraft detection system
KR100241313B1 (ko) * 1997-07-08 2000-02-01 이창래 교통상황 정밀 계측시스템
AU760788B2 (en) * 1996-03-29 2003-05-22 Commonwealth Scientific And Industrial Research Organisation An image acquisition system
CN110226326A (zh) * 2017-04-03 2019-09-10 康蒂-特米克微电子有限公司 用于检测车辆的周围环境区域的摄像设备及方法

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AT398011B (de) * 1989-06-08 1994-08-25 Alcatel Austria Ag Einrichtung zur überwachung von geschwindigkeitsgrenzen von verkehrsteilnehmern
CH690342A5 (de) * 1992-08-14 2000-07-31 Multanova Ag Verfahren und Vorrichtung zur Sicherung von in ein Bild eingeblendeten Daten.
JPH06150188A (ja) * 1992-11-09 1994-05-31 Ricoh Co Ltd 車両撮影装置
DE69422918T2 (de) * 1993-05-24 2000-10-12 Locktronic Systems Pty. Ltd., Ringwood Bildspeicherungssystem für fahrzeugidentifikation
NL9301993A (nl) * 1993-11-18 1995-06-16 R & H Systems B V Verkeerscontrolesysteem.
US6546119B2 (en) * 1998-02-24 2003-04-08 Redflex Traffic Systems Automated traffic violation monitoring and reporting system
DE19938320A1 (de) * 1999-08-12 2001-02-15 Robot Foto Electr Kg Ortsadaptive Bildkompression
DE10049852A1 (de) * 2000-10-09 2002-04-25 Dirk Wagner Verfahren und System zur Verkehrsüberwachung
NL1020386C2 (nl) * 2002-04-15 2003-10-17 Gatsometer Bv Werkwijze en systeem voor het vastleggen van een met een voertuig begane verkeersovertreding.
EP1414000A1 (fr) * 2002-10-22 2004-04-28 Olindo Regazzo Système de contrôle de circulation signalant temporairement toute obstruction sur la chaussée
US7986339B2 (en) 2003-06-12 2011-07-26 Redflex Traffic Systems Pty Ltd Automated traffic violation monitoring and reporting system with combined video and still-image data
EP1513125A3 (fr) * 2003-08-05 2005-04-13 Autostrade per L'Italia S.p.A. Système pour mesurer la vitesse des véhicules
FR2867594B1 (fr) * 2003-12-10 2006-05-26 Sagem Procede et systeme d'identification d'un vehicule en deplacement
DE102004028944A1 (de) * 2004-06-14 2006-01-12 Robot Visual Systems Gmbh Anordnung zur fotografischen Verkehrsüberwachung mit Videokamera
ITTO20060214A1 (it) 2006-03-22 2007-09-23 Kria S R L Sistema di rilevamento di veicoli
FR2906920A1 (fr) * 2006-10-04 2008-04-11 Nikos Ioannou Systeme autonome de detection du depassement par un vehicule d'une vitesse limite.
GB2514586B (en) * 2013-05-30 2015-07-01 Swarco Traffic Systems Gmbh Road construction site management system and field element for a road construction site management system
IT201900006648A1 (it) * 2019-05-08 2020-11-08 Sinelec S P A Metodo e sistema di determinazione dell'impronta digitale di veicoli in transito

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EP0028933A2 (fr) * 1979-11-09 1981-05-20 Ascotts Ltd. Système de surveillance
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0621572A1 (fr) * 1993-04-20 1994-10-26 Gatsometer B.V. Méthode et dispositif pour l'enregistrement électronique d'un incident par exemple une infraction au code de la route
NL9300671A (nl) * 1993-04-20 1994-11-16 Gatsometer Bv Werkwijze en inrichting voor het elektronisch vastleggen van een gebeurtenis, bijvoorbeeld een verkeersovertreding.
DE4446642A1 (de) * 1994-12-19 1996-06-20 Teledrive Telematik Im Verkehr Vorrichtung zur automatischen Kontrolle des Zuganges von Fahrzeugen zu einem Verkehrsraum
DE19508338A1 (de) * 1995-03-09 1996-09-12 Leica Sensortechnik Gmbh Verfahren und Vorrichtung zur Messung, Aufzeichnung und Wiedergabe von Meßinformationen eines Meßobjektes
DE19516083A1 (de) * 1995-05-03 1996-11-07 Albrecht Buchner System zur Überwachung des Straßenverkehrs
WO1997037336A1 (fr) * 1996-03-29 1997-10-09 Commonwealth Scientific And Industrial Research Organisation Systeme de detection d'avion
US5974158A (en) * 1996-03-29 1999-10-26 The Commonwealth Of Australia Commonwealth Scientific And Industrial Research Organization Aircraft detection system
AU760788B2 (en) * 1996-03-29 2003-05-22 Commonwealth Scientific And Industrial Research Organisation An image acquisition system
DE19624542A1 (de) * 1996-06-20 1998-01-02 Siegenia Frank Kg Vorrichtung zur Einbruchsmeldung bzw. Zugangserfassung
KR100241313B1 (ko) * 1997-07-08 2000-02-01 이창래 교통상황 정밀 계측시스템
CN110226326A (zh) * 2017-04-03 2019-09-10 康蒂-特米克微电子有限公司 用于检测车辆的周围环境区域的摄像设备及方法
CN110226326B (zh) * 2017-04-03 2022-01-11 康蒂-特米克微电子有限公司 用于检测车辆的周围环境区域的摄像设备及方法

Also Published As

Publication number Publication date
GB9208408D0 (en) 1992-06-03
AU3959993A (en) 1993-11-18
GB2266398A (en) 1993-10-27

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