EP0376800A1 - Verfahren und Apparat zur automatischen Beobachtung eines Ortes - Google Patents

Verfahren und Apparat zur automatischen Beobachtung eines Ortes Download PDF

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Publication number
EP0376800A1
EP0376800A1 EP89403543A EP89403543A EP0376800A1 EP 0376800 A1 EP0376800 A1 EP 0376800A1 EP 89403543 A EP89403543 A EP 89403543A EP 89403543 A EP89403543 A EP 89403543A EP 0376800 A1 EP0376800 A1 EP 0376800A1
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EP
European Patent Office
Prior art keywords
recording
section
event
information
recorder
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
EP89403543A
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English (en)
French (fr)
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EP0376800B1 (de
Inventor
Serge Besnard
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Individual
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Individual
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Publication date
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Publication of EP0376800A1 publication Critical patent/EP0376800A1/de
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Publication of EP0376800B1 publication Critical patent/EP0376800B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19665—Details related to the storage of video surveillance data
    • G08B13/19669—Event triggers storage or change of storage policy
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G08B13/19695—Arrangements wherein non-video detectors start video recording or forwarding but do not generate an alarm themselves
    • 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
    • G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors

Definitions

  • the present invention relates first of all to a method for automatic monitoring of a site where one expects the occurrence of fortuitous events, according to which one performs the recording, on an erasable medium of finite duration. , information collected when an expected event occurs.
  • site used here should be understood in a very general sense. It can in particular be a site crossed by a communication route (such as a road junction), a commercial site (such as a warehouse), an industrial site (such as a nuclear power plant) ), or a private site (such as a dwelling house).
  • a communication route such as a road junction
  • a commercial site such as a warehouse
  • an industrial site such as a nuclear power plant
  • a private site such as a dwelling house.
  • the object of the present invention is to remedy the above drawbacks and, in particular, to avoid having to operate the regular recharging of the recording medium, by increasing its normal duration of autonomy.
  • the method according to the invention essentially consists in dividing the recording medium into successive sections, each corresponding to a fraction of the total recording time offered by the medium, and in repeating on the same section of the medium l recording of the information collected over time, with concomitant erasure of information previously recorded on this section, unless an expected event occurs, in which case the passage from this section to the next section is ordered, on which the recording information continues without erasing the information recorded on the section which has just been left.
  • the information collected continuously is recorded in real time, then, at the end of each section of the recording medium, it is either kept or erased to make way for other information depending on whether the completion of the expected event occurred or not during recording on said section.
  • the contemporary recording sequences of a fortuitous event subject to surveillance are permanently memorized.
  • the recording medium once it has been fully used, will only contain useful sequences recorded in connection with the achievement of expected events, which leads to a large increase in its autonomy.
  • the subject of the invention is also an apparatus for implementing the above method, making it possible to record information collected when a fortuitous event occurs whose appearance is expected and comprising at least one sensor. and a recorder receiving the collected information and storing it on an erasable recording medium.
  • This apparatus further comprises a detector revealing the appearance of an expected event, and a device for controlling the recorder, which operates the latter on successive sections of the recording medium each corresponding to a sequence of determined duration. , and which orders, at the end of the recording on each section, the continuation of the recording of the information either, in the absence of event, on this same section, after return to the beginning of this one, either, if an event has been detected, on the next section.
  • the entry of the information to be recorded can be ensured by a video camera or any data sensor describing the event.
  • the recorder can be of the magnetic medium, optical medium or semiconductor memory type; it must imperatively be provided with commands for recording, erasing, positioning and quick search for recording.
  • the event detector must be adapted to the phenomenon and the place to be monitored. It delivers a signal when an event occurs, and can be of the “crossing sensor”, “shock sensor”, “noise sensor”, “lighting sensor”, “magnetic mass sensor” or any other type. phenomenon sensor characteristic of the event.
  • the partitioning of the recording medium into successive sections can be carried out by the control device which produces, at determined times, start and end of recording orders which define the beginning and the end of each section of the medium.
  • the control device can then trigger the passage from one section of the recording medium to the next by deleting or ignoring the end of recording order, which would have triggered the return to the start of the section.
  • the instants of start and end of section are determined by a time generator for the first recording on a section of the support, then, for each recording repeated on this same section, by reference to the scrolling of the support from the instants start and end of the first recording.
  • This arrangement makes it possible to avoid any possibility of progressive drift in the positioning of the support when resuming recording on a given section, such drifting risks gradually amputating the previous section carrying useful information.
  • the reference to the scrolling of the support can be obtained from a scrolling counter with which the recorder is provided to locate the position of the recording medium, while the instants of start and end of each recording repeated on the same section are those where the scrolling counter causes the same marking indications to reappear as those which it had supplied at the instants of the beginning and the end of the first recording on this section, the latter having been stored in the control device.
  • the reference to the scrolling can still be obtained from the recording medium itself, while the instants of start and end of each recording repeated on the same section are those where are read pulses recorded on the medium at the instants of from the end of the first recording.
  • control device In order to limit to a reasonable degree the wear of the medium subjected to recording processes repeated a large number of times, if the expected event is slow to occur, provision should be made for the control device to trigger the passage of one section to the next in addition when the number of repetitions of the recording process on the same section has reached a predetermined maximum value.
  • the recorder will be a video recorder of the video recorder type, while the apparatus will include an information sensor constituted by a video camera, so as to capture and store the images of the site and of mobile objects. that it contains that are there at the time of the event.
  • an information sensor constituted by a video camera
  • This will in particular be the case for equipment designed to be installed on a road site to ensure surveillance, which will also include at least one event detector capable of responding in the event of abnormal behavior manifested by a vehicle, presaging an incident or accident.
  • FIG. 1 a portion of highway 50 having a branch 51 which allows vehicles 52 traveling on one of the carriageways of the highway to leave it.
  • elements 54 are placed whose purpose is to dissuade the drivers of the vehicles from entering this zone and, in the event of a vehicle penetration, to absorb the impact on the safety barrier 55 bordering the highway and the fork.
  • an apparatus according to the invention can be installed on the represented site to ensure automatic surveillance and provide a recording of the abnormal scenes of traffic in this place.
  • This apparatus essentially comprises a video camera 3, the field of which covers part 56 of the site considered to be dangerous, and, in a box 6, an image recorder and a control device, to which an event detector sensor 33 is connected. , constituted for example by a pneumatic tube surrounding the area 53 and actuating an electrical contact when a vehicle enters unduly in this area.
  • the above-mentioned recorder can be seen in the diagram in FIG. 2, namely a video recorder 1, the video recording input 2 of which is connected to the camera 3.
  • the video recorder 1 also has a scroll control input 4 for recording of the video signal from camera 3 on the recording medium (magnetic tape) with which it is provided, an input 5 for controlling the return of the recording medium, and an output 7 where a tracking signal of the position of the magnetic strip, provided by the scroll counter that the recorder contains.
  • the operation of the recorder 1 is controlled by a control device 8, essentially constituted by an electronic circuit.
  • This comprises a flip-flop 9 whose outputs 10, 11 are connected respectively to inputs 4 and 5 of the recorder.
  • a pulse Di is applied to the input 12 of the flip-flop 9, its output 10 takes the "high” state and controls the scrolling of the magnetic tape with recording of video information from the camera 3 and erasure of any information previously recorded on the tape.
  • a pulse F′i is applied to the other input 13 of the flip-flop 9, it is its other output 11 which goes to the "high" state, so that the running of the tape is terminated and that his return is triggered.
  • a button 14 is operated which controls the application of a pulse D1 (figure 3-a, d), at the input 12 of the flip-flop 9 via OR circuits 15, 16.
  • the scrolling of the strip, with recording of the video signal delivered by the camera 3, then begins and continues until is applied to the other input 13 of the flip-flop 9, via an OR circuit 17 and a routing circuit 18, a pulse F1 (figure 3-e) delivered by a monostable rocker 19 at the end of its operating time T (figure 3-b), which is also triggered by the operation of the button 14 via the OR circuit 15.
  • This time T defines by its duration the first section I of recording on the magnetic tape (for example 5 minutes). The return of the tape brings it back to its beginning.
  • the pulse delivered by the monostable 19 at the end of time T also opens a door 20 which authorizes the application to a memory 21 of the tape tracking signal, signal available on the output 7 of the recorder 1.
  • the monostable 19 trigger pulse opens a door 22 which authorizes the application to a memory 23 of the locating signal from said output 7.
  • the locating signals thus memorized in memories 23 and 21 respectively characterize the start and the end of section I.
  • the tape return phase ends when it has returned to its beginning, which is detected by a comparator 24 receiving the locating signal from the output 7 and the content of the memory 23, initially at zero, this comparator then emitting a pulse D2 (figure 3-d) which, via the OR circuit 16, is applied to the input 12 of the flip-flop 9 and makes it change again state.
  • a comparator 25 detects that the locating signal of the output 7 is identical to the content of memory 21, characteristic of the end of the support section. It then delivers a pulse F2 which is applied to the input 13 of the flip-flop 9 via the circuits 17 and 18.
  • the recording process is thus repeated on section I of the magnetic tape, interspersed with return phases (indicated by hatching in Figure 3-f), the instants of start and end of recording being determined by the comparators 24, 25 receiving on the one hand the locating signal supplied by the counter while the band is progressing forwards or backwards, and on the other hand the contents of the memories 23 and 21, which correspond to said locating signal supplied by the counter respectively at the beginning and at the end of the section.
  • the recording of the video signal delivered by the camera 3 is carried out by successive sequences repeatedly on the same first section I of the magnetic tape, each new recorded sequence taking the place of the previous sequence.
  • the section start pulses Di applied to the input 12 of the flip-flop 9, are also applied to a counter 26 which totals the number of repetitions on the same section (in this case section I).
  • this counter receives the pulse Dn which corresponds to the maximum number n of authorized repetitions (figure 3-d)
  • its output 27 changes state (figure 3-g) and actuates a flip-flop 28 whose output 29 (figure 3 -j) controls the switching circuit 18 so that the latter switches the next section end pulse Fn (FIG. 3-c) coming from the OR circuit 17 not to its first output 30 connected to the flip-flop 9, but towards its second output 31.
  • the pulse Fn is therefore removed from the series of pulses F′i at the end of the section (FIG. 3-e) coming from the output 30 of the circuit 18. Consequently, the flip-flop 9 does not change no state at the moment when the pulse Fn appears and the recording continues on the magnetic tape beyond section I, that is to say on the next section (section II), delimited by new pulses D1, F1 at the start and end of the section, created at the start and at the end of the operating time T of the monostable 19 as for the first re section I.
  • the pulse Fn coming from the output 31 of the circuit 18 (figure 3-h), is applied to this monostable via the OR circuit 15 and another monostable rocker 32 which has the role of introducing a small margin of time between the end of section I and the beginning of section II (figure 3-i).
  • Said pulse which controls the monostable 19 is also applied to the gate 22, so that the tape position locating signal from the output 7 of the recorder 1 at the start of section II is written into the memory 23 Similarly, the marking signal corresponding to the end of section II is written, via gate 20, into memory 21.
  • the memories 23, 21 are successively registered the signals for locating the position of the magnetic tape produced by the scrolling counter of the recorder 1 during the first recording on each section whose start and end times are defined by the monostable 19.
  • the memory 23 successively contains the locating signals N1D, N2D, N3D, ... at the start of sections I, II, III, ... and the memory 21 marking signals N1F, N2F, N3F, ... at the end of sections I, II, III, ... these signals being written into the memories at the beginning and at the end of the time T produced by the monostable 19.
  • C ' is from these stored signals at the start and end of the section that the instants for the start and end of the return phases of the magnetic strip are determined, so that the start and end points of each section are defined on the basis of the actual movement of the tape, measured by the counter the recorder.
  • the information accompanying this event here the images of the incident or road accident captured by the camera 3, would be recorded for too short a time to allow for further in-depth analysis of the circumstances of the event. It is therefore advantageous to provide an extension of the recording time on the section in question, which can be obtained simply by delaying the end of section pulse F 1 which immediately follows the event by a determined period of time.
EP89403543A 1988-12-21 1989-12-19 Verfahren und Apparat zur automatischen Beobachtung eines Ortes Expired - Lifetime EP0376800B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8816939 1988-12-21
FR8816939A FR2640786B1 (fr) 1988-12-21 1988-12-21 Procede et appareillage de surveillance automatique d'un site

Publications (2)

Publication Number Publication Date
EP0376800A1 true EP0376800A1 (de) 1990-07-04
EP0376800B1 EP0376800B1 (de) 1995-04-05

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Application Number Title Priority Date Filing Date
EP89403543A Expired - Lifetime EP0376800B1 (de) 1988-12-21 1989-12-19 Verfahren und Apparat zur automatischen Beobachtung eines Ortes

Country Status (6)

Country Link
US (1) US4977451A (de)
EP (1) EP0376800B1 (de)
CA (1) CA2006234A1 (de)
DE (1) DE68922084T2 (de)
ES (1) ES2073455T3 (de)
FR (1) FR2640786B1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2660460A1 (fr) * 1990-03-28 1991-10-04 Scrvs Ste Civile Rech Dispositif de surveillance de locaux et de reconnaissance de personnes.
EP0593979A1 (de) * 1992-10-20 1994-04-27 Daimler-Benz Aerospace Aktiengesellschaft Vorrichtung zur Aufzeichnung von Livebildern einer Rotlichtüberwachungsanlage
WO1996000957A1 (en) * 1994-06-28 1996-01-11 Sistemi Per L'intelligenza Artificiale S.R.L. Method and device in particular for enabling the causes of an accident involving a vehicle to be verified by means of images of the environment within which the vehicle is in a moving or stationary state
WO1998045844A1 (de) * 1997-04-08 1998-10-15 Koninklijke Philips Electronics N.V. Einrichtung zum aufzeichnen eines informationssignales in einem aufzeichnungsträger und verfahren zum aufzeichnen eines informationssignales in einem aufzeichnungsträger
FR2866182A1 (fr) * 2004-02-05 2005-08-12 Capsys Procede et dispositif de programmation d'un systeme d'acquisition d'images
CN102915641A (zh) * 2012-10-16 2013-02-06 浪潮集团有限公司 一种基于密码技术的交通违章信息处理方法
CN103258432A (zh) * 2013-04-19 2013-08-21 西安交通大学 基于视频的交通事故自动识别处理方法和系统

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KR950000048B1 (ko) * 1992-03-23 1995-01-07 대우전자 주식회사 브이씨알 데크간의 끊김없는 연속녹화방법
US5628033A (en) * 1995-09-28 1997-05-06 Triodyne, Inc. Accident investigation and reconstruction mapping with aerial photography
KR100213055B1 (ko) * 1996-07-27 1999-08-02 윤종용 감시용 시스템에서의 기록 매체 절약형 기록방법
US5892439A (en) * 1997-06-16 1999-04-06 Molina Torres; Russell E. Vehicle warning and help apparatus and method
JPH11341477A (ja) * 1998-05-25 1999-12-10 Niles Parts Co Ltd 画像記憶処理装置
FR2785432B1 (fr) * 1998-10-30 2001-01-19 Citilog Procede permettant d'analyser l'etat d'une portion de voie et de son environnement
JP2001268509A (ja) * 2000-03-17 2001-09-28 Omron Corp 画像記録装置及び画像記録システム
US7064730B2 (en) * 2001-10-17 2006-06-20 Intel Corporation Viewing device with replay feature

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FR2082432A5 (de) * 1970-03-16 1971-12-10 Evr
DE2219330A1 (de) * 1972-04-20 1973-11-08 Peter Binder Anordnung zum beobachten gefaehrdeter orte (ueberfallsicherung)
CH549252A (de) * 1971-12-01 1974-05-15 Zellweger Uster Ag Verfahren und vorrichtung zur messung der geschwindigkeit von fahrzeugen und zur identifikation vermessener fahrzeuge.
DE2710781A1 (de) * 1977-03-11 1978-09-14 Siemens Ag Bildaufzeichnungs- und wiedergabegeraet
DE3015737A1 (de) * 1979-04-30 1980-11-13 Eumig Aufnahmeeinrichtung
DE3716319C1 (en) * 1987-05-15 1988-08-18 Engmann Brigitte Video recorder
WO1988009023A1 (en) * 1987-05-08 1988-11-17 Viktor Szabo Accident data recorder

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US4001881A (en) * 1975-01-02 1977-01-04 Qsi Systems, Inc. Switched video recording system
DE2710883C2 (de) * 1977-03-12 1979-04-12 Robert Bosch Gmbh, 7000 Stuttgart System zur Diskrimination eines Videosignals
JPS56160183A (en) * 1980-05-09 1981-12-09 Hajime Sangyo Kk Method and device for monitoring
JPS6177484A (ja) * 1984-09-25 1986-04-21 Mitsubishi Electric Corp セキユリテイシステム

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Publication number Priority date Publication date Assignee Title
FR2082432A5 (de) * 1970-03-16 1971-12-10 Evr
CH549252A (de) * 1971-12-01 1974-05-15 Zellweger Uster Ag Verfahren und vorrichtung zur messung der geschwindigkeit von fahrzeugen und zur identifikation vermessener fahrzeuge.
DE2219330A1 (de) * 1972-04-20 1973-11-08 Peter Binder Anordnung zum beobachten gefaehrdeter orte (ueberfallsicherung)
DE2710781A1 (de) * 1977-03-11 1978-09-14 Siemens Ag Bildaufzeichnungs- und wiedergabegeraet
DE3015737A1 (de) * 1979-04-30 1980-11-13 Eumig Aufnahmeeinrichtung
WO1988009023A1 (en) * 1987-05-08 1988-11-17 Viktor Szabo Accident data recorder
DE3716319C1 (en) * 1987-05-15 1988-08-18 Engmann Brigitte Video recorder

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2660460A1 (fr) * 1990-03-28 1991-10-04 Scrvs Ste Civile Rech Dispositif de surveillance de locaux et de reconnaissance de personnes.
EP0593979A1 (de) * 1992-10-20 1994-04-27 Daimler-Benz Aerospace Aktiengesellschaft Vorrichtung zur Aufzeichnung von Livebildern einer Rotlichtüberwachungsanlage
WO1996000957A1 (en) * 1994-06-28 1996-01-11 Sistemi Per L'intelligenza Artificiale S.R.L. Method and device in particular for enabling the causes of an accident involving a vehicle to be verified by means of images of the environment within which the vehicle is in a moving or stationary state
WO1998045844A1 (de) * 1997-04-08 1998-10-15 Koninklijke Philips Electronics N.V. Einrichtung zum aufzeichnen eines informationssignales in einem aufzeichnungsträger und verfahren zum aufzeichnen eines informationssignales in einem aufzeichnungsträger
US6580871B1 (en) * 1997-04-08 2003-06-17 Koninklijke Philips Electronics N.V. Device and method for recording an information signal in a record carrier in which a temporary store is formed on the record carrier, the temporary store being continuously overwritten with the information signal
FR2866182A1 (fr) * 2004-02-05 2005-08-12 Capsys Procede et dispositif de programmation d'un systeme d'acquisition d'images
WO2005084026A1 (fr) * 2004-02-05 2005-09-09 Capsys Procede et dispositif de programmation d’un systeme d’acquisition d’images
CN102915641A (zh) * 2012-10-16 2013-02-06 浪潮集团有限公司 一种基于密码技术的交通违章信息处理方法
CN102915641B (zh) * 2012-10-16 2016-04-13 浪潮集团有限公司 一种基于密码技术的交通违章信息处理方法
CN103258432A (zh) * 2013-04-19 2013-08-21 西安交通大学 基于视频的交通事故自动识别处理方法和系统

Also Published As

Publication number Publication date
EP0376800B1 (de) 1995-04-05
FR2640786A1 (fr) 1990-06-22
CA2006234A1 (fr) 1990-06-21
ES2073455T3 (es) 1995-08-16
FR2640786B1 (fr) 1991-04-05
US4977451A (en) 1990-12-11
DE68922084T2 (de) 1995-09-14
DE68922084D1 (de) 1995-05-11

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