EP0189717A1 - Dispositif et installation de détection instantanée d'un ou plusieurs phénomènes physiques ayant un caractère de risque - Google Patents

Dispositif et installation de détection instantanée d'un ou plusieurs phénomènes physiques ayant un caractère de risque Download PDF

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Publication number
EP0189717A1
EP0189717A1 EP85402636A EP85402636A EP0189717A1 EP 0189717 A1 EP0189717 A1 EP 0189717A1 EP 85402636 A EP85402636 A EP 85402636A EP 85402636 A EP85402636 A EP 85402636A EP 0189717 A1 EP0189717 A1 EP 0189717A1
Authority
EP
European Patent Office
Prior art keywords
video
camera
visible
detection
known per
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Withdrawn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
EP85402636A
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German (de)
English (en)
French (fr)
Inventor
Hector Alberto Perez Borruat
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.)
Francaise De Protection Electrique Proteg (cfpe Proteg) Dite Cie Ste
Original Assignee
Francaise De Protection Electrique Proteg (cfpe Proteg) Dite Cie Ste
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 Francaise De Protection Electrique Proteg (cfpe Proteg) Dite Cie Ste filed Critical Francaise De Protection Electrique Proteg (cfpe Proteg) Dite Cie Ste
Publication of EP0189717A1 publication Critical patent/EP0189717A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
    • G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow

Definitions

  • the present invention relates to a device and to an instantaneous and versatile detection installation, inside and / or outside, of physical phenomena having a risk character and being as varied as intrusion and / or l and / or explosion and / or leakage (of fluids and / or "electrical") and / or disturbance or absence of a regular or periodic movement or phenomenon, taken in isolation or jointly and possibly simultaneously.
  • the present invention has consequently set itself the aim of providing an instant detection system, inside and / or outside, of physical phenomena having a character of risk and being as varied as intrusion and / or fire and / or explosion and / or leaks (of fluids and / or "electric") and / or even the disturbance and / or the absence of a regular or periodic movement taken individually or jointly.
  • intrusion is meant not only the presence of people in a static field, but also the presence of any foreign body in the field of action of a dynamically a priori arbitrary system, such as a chain industrial automation or other.
  • cameras with reduced spectral response are used, namely “infrared” or “ultraviolet” cameras, or else broad spectrum cameras.
  • the photosensitive surface of a camera has a specific spectral response curve which, however, in no case naturally adapts to a given environment and to a given risk or combination of risks. It is then necessary to modify the spectral response of the type of camera chosen by adding one or more filters with known bandwidth (for example filters 1a and 1b of FIG. 1) so as to obtain the total spectral response of the camera always adapted to environmental characteristics and targeted risks; more precisely, the bandwidth of the spectral correction filter (s) is chosen as a function of the nature (infrared or ultraviolet) of the radiation which will be emitted at the time when the risk monitored will manifest itself.
  • filters 1a and 1b of FIG. 1 filters with known bandwidth
  • the performance of the detection system according to the invention can be significantly improved by adding an optical device 2 of linear or circular polarization, with the aim of attenuating or eliminating certain reflections and generally increasing the contrast and, therefore, the sensitivity of the detection system (see Figure 1).
  • the video signal (which is obtained using television cameras whose objective 4, made of good optical quality glass or quartz, can be coupled to an image intensifier 5, namely to a light amplifier and in particular of the first or second order, and whose spectral response and the sensitivity have been modified as indicated above, and which is analyzed in a tube 6 (in particular an analysis tube "Newvicon. ER") attacking a video preamplifier 7. (see Figure 1).
  • the video signal is processed in an electronic assembly 8 of standard type forming an integral part of the traditional equipment of a video camera (cf. FIG. 1).
  • the analog / digital converter makes it possible to position the variation in space of the phenomenon or phenomena to be monitored
  • the use of a microcomputer makes it possible to go as far as recognizing the shape (image analysis) thanks to the increase in the finesse of analysis (matrix of more than 100,000 elementary points or pels).
  • the design of the detection system according to the invention being semi-automatic, this implies the interpretation or human exploitation of the information provided by the system, namely video images and signals for locating anomalies, in particular available on monitors and / or video recorders.
  • the initial response curve of the camera, modified according to the goal sought is represented by the curve a.
  • the block diagram is illustrated in Figure 3 and refers to the coverage of a possible risk of intrusion and / or fire and / or explosion located at a distance from the camera of 500 m (and even more, the distance maximum coverage being essentially a function of the actual performance of the various basic components of a camera, in particular the objective, the analysis tube, the video preamplifier as well as the accessory components which may possibly cooperate, in accordance with the invention, with this basic equipment, namely the image intensifier and filters).
  • the schematic diagram is illustrated in Figure 4 and refers to the coverage of a possible risk of intrusion and / or fire and / or explosion located at a maximum distance from the camera of approximately 200 m.
  • the block diagram is illustrated in Figure 5 and refers to the coverage of a possible risk of intrusion and / or fire and / or explosion located at a maximum distance from the camera of approximately 100 m.
  • the block diagram is illustrated in Figure 6 and refers more particularly to the coverage of a probable risk of gas leakage and / or fire and / or intrusion and / or explosion, being at a maximum distance from the camera about 100 m.
  • the block diagram is illustrated in Figure 7 and refers more particularly to the coverage of a probable risk of leakage of certain vapors and / or fire and / or intrusion and / or explosion, being at a maximum distance from the camera about 100 m.
  • the schematic diagram is illustrated in Figure 8 and refers to the coverage of a probable risk of "electrical" leakage and / or intrusion and / or fire and / or explosion located at a maximum distance from the camera of approximately 100 meters.
  • system according to the invention is applicable in any environment (including environments as hostile as those formed, for example, by the sea depths and blast furnaces where there are very high pressures and temperatures high, respectively), provided that adequate means are in place to properly isolate the elements of information acquisition.
  • the detection installations produced using the system in accordance with the present invention can carry a very large number of cameras.
  • This basic configuration can be improved by adding a timer unit, known per se, (and not shown) which receives the alarms given by the information processing units so as to trigger an automatic telephone transmitter. known per se, in the event of absence or immobilisation (aggression) of the guardian (s), and this after the lapse of a certain time (programmed).
  • a timer unit known per se, in the event of absence or immobilisation (aggression) of the guardian (s), and this after the lapse of a certain time (programmed).
  • the information processing unit activates the camera which has detected the incident on the video recorder and starts recording in real time.
  • a television telephone transmitter transmits the processed video information and the video information to said surveillance station, said telephone transmitter being able to call an alarm receiving station (known per se) using the normal telephone network.
  • a megaphone network which can broadcast, in an abnormal situation, an audible message (manually or automatically) in the protected zone or zones.
  • the location of the various cameras is a function, for one or more exterior and / or interior zones to be protected, of the field of vision and of the environmental constraints, in particular with regard to the exterior in particular. , namely the existence of optical disturbances, for example constituted by the presence of mercury vapor and / or fog lights and / or moving objects, etc.
  • the detection system according to the invention can be used not only for the detection of phenomena, possibly simultaneous, such as intrusion and / or fire and / or explosion and / or leaks (of fluids and "electrical "), but also in all cases where it is necessary to detect the disturbance or the absence of a movement which, in normal situation, is regular or periodic (in this order of idea it is easy to envisage applications also in the medical field, for example).

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Emergency Alarm Devices (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
EP85402636A 1984-12-27 1985-12-26 Dispositif et installation de détection instantanée d'un ou plusieurs phénomènes physiques ayant un caractère de risque Withdrawn EP0189717A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8419872A FR2575572B1 (fr) 1984-12-27 1984-12-27 Dispositif et installation de detection instantanee d'un ou plusieurs phenomenes physiques ayant un caractere de risque
FR8419872 1984-12-27

Publications (1)

Publication Number Publication Date
EP0189717A1 true EP0189717A1 (fr) 1986-08-06

Family

ID=9311011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85402636A Withdrawn EP0189717A1 (fr) 1984-12-27 1985-12-26 Dispositif et installation de détection instantanée d'un ou plusieurs phénomènes physiques ayant un caractère de risque

Country Status (7)

Country Link
US (1) US4775853A (no)
EP (1) EP0189717A1 (no)
JP (1) JPS61222391A (no)
DK (1) DK596185A (no)
ES (1) ES8704021A1 (no)
FR (1) FR2575572B1 (no)
NO (1) NO855262L (no)

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US4975584A (en) * 1989-03-29 1990-12-04 Mountain Ocean, Ltd. Method and apparatus for collecting, processing and displaying ultraviolet radiation data
US5157334A (en) * 1990-01-22 1992-10-20 Atlantic Richfield Company Image intensifier monitoring of power line insulator leakage
US5166755A (en) * 1990-05-23 1992-11-24 Nahum Gat Spectrometer apparatus
US5153722A (en) * 1991-01-14 1992-10-06 Donmar Ltd. Fire detection system
DE4120816C2 (de) * 1991-06-25 2001-11-08 Rabotek Ind Comp Gmbh Verfahren und Einrichtung zur Überwachung von Tunnelbauwerken
US5257007A (en) * 1991-10-01 1993-10-26 M-Tec Corporation Portable security system
US5726632A (en) * 1996-03-13 1998-03-10 The United States Of America As Represented By The Administrator Of The National Aeronautics & Space Administration Flame imaging system
US5937077A (en) * 1996-04-25 1999-08-10 General Monitors, Incorporated Imaging flame detection system
US5886664A (en) * 1997-04-16 1999-03-23 Trw Inc. Method and apparatus for detecting mines using radiometry
US5764143A (en) * 1997-05-29 1998-06-09 Napco Security Systems, Inc. Combination temperature unit/intruder sensor utilizing common components
US6169594B1 (en) 1998-08-24 2001-01-02 Physical Optics Corporation Beam deflector and scanner
DE10011411C2 (de) * 2000-03-09 2003-08-14 Bosch Gmbh Robert Bildgebender Brandmelder
GB2365120B (en) * 2000-07-21 2004-11-17 Infrared Integrated Syst Ltd Multipurpose detector
US20020130953A1 (en) * 2001-03-13 2002-09-19 John Riconda Enhanced display of environmental navigation features to vehicle operator
US6873256B2 (en) 2002-06-21 2005-03-29 Dorothy Lemelson Intelligent building alarm
CN1998013A (zh) 2003-06-09 2007-07-11 格林莱恩系统公司 用于风险检测、汇报和基础设施的系统和方法
DE102004056958B3 (de) * 2004-11-22 2006-08-10 IQ wireless GmbH, Entwicklungsgesellschaft für Systeme und Technologien der Telekommunikation Verfahren für die Überwachung von Territorien zur Erkennung von Wald- und Flächenbränden
US9692549B2 (en) * 2011-06-29 2017-06-27 Spatial Digital Systems, Inc. Accessing CP channels with LP terminals via wavefront multiplexing
US20140374600A1 (en) * 2013-06-19 2014-12-25 Silicon Laboratories Inc. Ultraviolet Sensor
US9978887B2 (en) 2014-10-28 2018-05-22 Silicon Laboratories Inc. Light detector using an on-die interference filter
US9627424B2 (en) 2014-11-19 2017-04-18 Silicon Laboratories Inc. Photodiodes for ambient light sensing and proximity sensing
DE102015206611A1 (de) 2015-04-14 2016-10-20 Siemens Schweiz Ag Flammenmelder zur Überwachung eines Bereichs angrenzend zu Gewässern und Berücksichtigung eines im Empfangslicht vorhandenen Polarisationsgrads bei der Brandalarmierung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3686434A (en) * 1957-06-27 1972-08-22 Jerome H Lemelson Area surveillance system
US4257063A (en) * 1979-03-23 1981-03-17 Ham Industries, Inc. Video monitoring system and method
US4437111A (en) * 1981-01-16 1984-03-13 Matsushita Electric Industrial Co., Ltd. Color television camera

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US3612764A (en) * 1969-11-14 1971-10-12 Minnesota Mining & Mfg Television security monitor
US3740466A (en) * 1970-12-14 1973-06-19 Jackson & Church Electronics C Surveillance system
DE2613706C3 (de) * 1976-03-31 1979-02-22 Robert Bosch Gmbh, 7000 Stuttgart System zum Feststellen einer Bewegung im Überwachungsbereich mehrerer Fernsehkameras
US4337481A (en) * 1980-06-10 1982-06-29 Peter Mick Motion and intrusion detecting system
WO1982001454A1 (en) * 1980-10-22 1982-04-29 Mahoney Trevor W Video movement detector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3686434A (en) * 1957-06-27 1972-08-22 Jerome H Lemelson Area surveillance system
US4257063A (en) * 1979-03-23 1981-03-17 Ham Industries, Inc. Video monitoring system and method
US4437111A (en) * 1981-01-16 1984-03-13 Matsushita Electric Industrial Co., Ltd. Color television camera

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FUNKSCHAU, no. 11, mai 1982, pages 53-56, Munich, DE; G. WILHELM et al.: "Videotechnik in Sicherheitsanlagen" *

Also Published As

Publication number Publication date
NO855262L (no) 1986-06-30
US4775853A (en) 1988-10-04
FR2575572B1 (fr) 1987-10-30
ES550511A0 (es) 1987-03-01
DK596185A (da) 1986-06-28
ES8704021A1 (es) 1987-03-01
JPS61222391A (ja) 1986-10-02
DK596185D0 (da) 1985-12-20
FR2575572A1 (fr) 1986-07-04

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