DE9303120U1 - Self-learning alarm system for object monitoring with automatic object detection via a combined ultrasound/image sensor - Google Patents

Self-learning alarm system for object monitoring with automatic object detection via a combined ultrasound/image sensor

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Publication number
DE9303120U1
DE9303120U1 DE9303120U DE9303120U DE9303120U1 DE 9303120 U1 DE9303120 U1 DE 9303120U1 DE 9303120 U DE9303120 U DE 9303120U DE 9303120 U DE9303120 U DE 9303120U DE 9303120 U1 DE9303120 U1 DE 9303120U1
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Germany
Prior art keywords
alarm system
image sensor
sensor
self
learning
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Expired - Lifetime
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DE9303120U
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German (de)
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Individual
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Priority to DE9303120U priority Critical patent/DE9303120U1/en
Publication of DE9303120U1 publication Critical patent/DE9303120U1/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G08B13/19602—Image analysis to detect motion of the intruder, e.g. by frame subtraction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1609—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems
    • G08B13/1618—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means
    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Multimedia (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Burglar Alarm Systems (AREA)

Description

•Beschreibung•Description

Selbstlernendes Alarmsystem fur die Objektüberwachung mit automatischer Objekterkennung über einen kombinierten Ultraschall/Bildsensor.Self-learning alarm system for object monitoring with automatic object detection via a combined ultrasound/image sensor.

Herkömmliche Alarmsysteme und deren Sensoren erfaßen räumliche Geometrien und die zeitliche Änderung derselben bei beobachteten Objekten relativ ungenau. Damit sind eindeutige Identifizierungen und Unterscheidungen von Objektänderungen auf Alarmwürdigkeit äußerst unsicher. Fehlalarme, unbewußt ausgelöst oder bewußt provoziert, sind die Folge.Conventional alarm systems and their sensors record spatial geometries and the temporal changes in the same for observed objects relatively imprecisely. This makes clear identification and differentiation of object changes for alarm worthyness extremely uncertain. False alarms, triggered unconsciously or deliberately provoked, are the result.

Beim Einsatz von Bildsensoren erfolgt eine rein flächige Auswertung, oder es werden spezielle, teure Bildverarbeitungssysteme als Sonderausführungen eingesetzt, die für den durchschnittlichen Endanwender nicht erschwinglich oder unwirtschaftlich sind. Bei einfachen Systemen erfolgt keine automatische und damit immerwährende, reproduzierbare Auswertung des Bildes. Ein menschlicher Beobachter wird meist eingesetztWhen using image sensors, a purely surface-level evaluation is carried out, or special, expensive image processing systems are used as special versions that are not affordable or uneconomical for the average end user. With simple systems, there is no automatic and therefore constant, reproducible evaluation of the image. A human observer is usually used.

Die im Hauptanspruch und den Unteransprüchen angegebene Erfindung beseitigt diese Nachteile.The invention specified in the main claim and the subclaims eliminates these disadvantages.

Ein IR-befüterter Bildaufnehmer, vozugsweise eine CCD- Flächenkamera liefert ein 2D-BiId zu einem gegebenen Zeitpunkt Durch Einsatz eines zusatzlichen Ultraschallsensors, der neben dem Bildsensor angeordnet ist, wird zudem eine räumliche Komponente(z-Achse) gewonnen(Abb. 1).An IR-fed image sensor, preferably a CCD area camera, delivers a 2D image at a given point in time. By using an additional ultrasonic sensor, which is arranged next to the image sensor, a spatial component (z-axis) is also obtained (Fig. 1).

Aufwendiger kann mit Verwendung eines zweiten Bildsensors, der in einem horizontalen Abstand zum IBK\alnngmbs\Februar 93More complex can be achieved by using a second image sensor, which is positioned at a horizontal distance from the IBK\alnngmbs\February 93

ersten angeordnet ist, oder über eine ebenso angeordnete Optik, die die unterschiedlichen Bildwinkel auf einen Bildsensor zu unterschiedlichen Zeitpunkten konzentriert, und durch entsprechende Auswertung dieser Bildinformationen eine räumliche Komponente gewonnen werdeafirst, or via a similarly arranged optics that concentrates the different image angles on an image sensor at different times, and by appropriate evaluation of this image information a spatial component is obtained

Damit ist eine eindeutige geometrische und zeitliche Charakterisierung des zu überwachenden Raumes/Objektes möglich. Die gewonnene Information wird gelernt, d.h. sie wird als Referenz in einem Speicher (Abb. 2) abgelegt Gegebenenfalls können mehrere solcher Referenzen eingelesen und abgespeichert werden. Jede Änderung, sei es in der räumlichen Geometrie oder dem zeitlichen Verhalten(z. B: Helligkeitsschwankungerißewegung) wird registriert und zur Auswerteeinheit übertragen. Dazu wird ein spezielles, störunanfälliges Protokoll verwendet, um auch den Anschluß mehrerer solcher Sensoren an eine Auswertestation zu ermöglichen. Die Übertragung dervDaten vom Sensor zur Auswerteeinheit kann über die Netzleitung, eine Funkstrecke, oder eine seperate Verkabelung erfolgeaThis enables a clear geometric and temporal characterization of the room/object to be monitored. The information obtained is learned, i.e. it is stored as a reference in a memory (Fig. 2). If necessary, several such references can be read in and stored. Every change, be it in the spatial geometry or the temporal behavior (e.g. brightness fluctuations, cracks, movement) is registered and transmitted to the evaluation unit. A special, interference-resistant protocol is used for this purpose in order to enable the connection of several such sensors to an evaluation station. The data can be transmitted from the sensor to the evaluation unit via the power cable, a radio link, or separate cabling.

Bei Änderung der zeitlichen Bedingungen hinsichtlich von Helligkeitsschwankungen ,die vom Sensor registriert werden, kann über einen im Sensor integrierten IR-Sender ein Ausgleich erfolgea Der Sensor kann dabei in seinen Funktionen von der Auswerteeinheit gesteuert u. programmiert werdeaIf the temporal conditions change with regard to brightness fluctuations registered by the sensor, compensation can be carried out using an IR transmitter integrated in the sensor. The sensor's functions can be controlled and programmed by the evaluation unit.

Bei Netzausfall dient eine Batteriepufferung im Sensor und der Auswerteeinheit dazu, die Funktion des Systems sicherzustellea Die Kamera wird, um die Batterie zu entlasten, nur bei Vorliegen einer Bewegungsmeldung über den Ultraschallsensor aktiviert In the event of a power failure, a battery buffer in the sensor and the evaluation unit serves to ensure the functionality of the system. In order to reduce the load on the battery, the camera is only activated when there is a motion detection via the ultrasonic sensor.

IBK\alrmgmbs\Februar 93IBK\alrmgmbs\February 93

Der Ultraschallsensor kann in seiner Funktion von Bewegungsmeldung auf Distanzmessung nach den jeweiligen Erfordernissen umgeschaltet werden.The ultrasonic sensor can be switched from motion detection to distance measurement depending on requirements.

ffiK\alrmgmbs\Februar 93ffiK\alrmgmbs\February 93

Abbildung 1illustration 1

1 Beobachtetes Objekt1 Observed object

2 Ultraschallsensor2 Ultrasonic sensor

3 Bildaufhehmer3 image sensors

IBK\alnngmbs\Februar 93IBK\alnngmbs\February 93

Abbildung 2Figure 2

1 Sensor 3 Übertragungsweg1 Sensor 3 Transmission path

2 Auswerteeinheit2 Evaluation unit

1.1 und 2.1 Batterie 1.6 Ultraschallsensor1.1 and 2.1 Battery 1.6 Ultrasonic sensor

1.2 und 2.2 Übertragungsanschaltung 1.7 Infrarotsender1.2 and 2.2 Transmission connection 1.7 Infrared transmitter

1.3 Filter 1.8 Steuerung1.3 Filters 1.8 Control

1.4 Bildaufnehmer 2.3 Alarmierungseinheit1.4 Imager 2.3 Alarm unit

1.5 Speicher 2.4 Auswertung1.5 Storage 2.4 Evaluation

E3K\alrmgmbs\Februar 93E3K\alrmgmbs\February 93

Claims (7)

•Schutzansprüche•Protection claims 1. Selbstlernendes Alarmsystem für die Objektüberwachung mit automatischer Objekterkennung über einen kombinierten Ultraschall/Bildsensor,1. Self-learning alarm system for object monitoring with automatic object detection via a combined ultrasound/image sensor, dadurch gekennzeichnet,characterized, daß mittels eines befilterten Bildsensors in Verbindung mit einem Ultraschallsensor ein Raum/Zeitbereich erfaßt und automatisch eine Änderung innerhalb desselben nach einem vorgegebenen Toleranzschema ausgewertet und entsprechend ein Alarmsignal ausgegeben wird.that a spatial/temporal range is recorded using a filtered image sensor in conjunction with an ultrasonic sensor and a change within it is automatically evaluated according to a predefined tolerance scheme and an alarm signal is issued accordingly. 2. Alarmsystem nach Anspruch 1,
dadurch gekennzeichnet,2. Alarm system according to claim 1,
characterized, daß die flächige Information des Bildsensors über den zusätzlichen Einsatz eines Ultraschallsensors oder durch stereoskopische Aufhahme zu einer räumlichen erweitert wirdthat the planar information of the image sensor is expanded to spatial information through the additional use of an ultrasonic sensor or through stereoscopic recording 3. Alarmsystem nach Anspruch 1,
dadurch gekennzeichnet,3. Alarm system according to claim 1,
characterized, daß in einem solchen System mehrere solche kombinierte intelligente Sensoren gleichzeitig betrieben und ausgewertet werden können.
35that in such a system several such combined intelligent sensors can be operated and evaluated simultaneously.
35 IBK\alarmgman\Februar 93IBK\alarmgman\February 93 4. Alarmsystem nach Anspruch 1,4. Alarm system according to claim 1, dadurch gekennzeichnet,
5characterized,
5 daß das System selbstlernend ist und die Sensoren über die Auswerteeinheit zentral in ihrer Funktion programmiert werden können.that the system is self-learning and that the sensors' functions can be centrally programmed via the evaluation unit. 5. Alarmsystem nach Anspruch 1,5. Alarm system according to claim 1, dadurch gekennzeichnet,characterized, daß Schwankungen der Lichtverhältnisse am beobachteten Objekt erfaßt und gegebenenfalls mittels einer aktiv steuerbaren Infrarotbeleuchtung im Sensor korrigiert werden können, bzw. von einer rein passiven Aufnahme zu einer aktiven umgeschaltet wird.that fluctuations in the lighting conditions on the observed object can be recorded and, if necessary, corrected using actively controllable infrared lighting in the sensor, or switching from a purely passive recording to an active one. 6. Alarmsystem nach Anspruch 1,6. Alarm system according to claim 1, dadurch gekennzeichnet,characterized, daß zum Aktivieren des Bildsensors ein handelsüblicher Ultraschallsensor als Bewegungsmelder verwendet werden kann.that a commercially available ultrasonic sensor can be used as a motion detector to activate the image sensor. 7. Alarmsystem nach Anspruch 1,7. Alarm system according to claim 1, dadurch gekennzeichnet,characterized, daß bei Ausfall der Netzstromversorgung die Funktion sowohl des Sensors und der Auswerteeinheit als auch die ordnungsgemäße Datenübertragung zwischen beiden durch Verwendung einer geeignetenthat in the event of a power failure, the function of both the sensor and the evaluation unit as well as the proper data transmission between the two can be ensured by using a suitable BatteriepufTerung gewährleistet ist.
IBK\alanngman\Februar 93Battery buffering is guaranteed.
IBK\alanngman\February 93
DE9303120U 1993-03-04 1993-03-04 Self-learning alarm system for object monitoring with automatic object detection via a combined ultrasound/image sensor Expired - Lifetime DE9303120U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9303120U DE9303120U1 (en) 1993-03-04 1993-03-04 Self-learning alarm system for object monitoring with automatic object detection via a combined ultrasound/image sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9303120U DE9303120U1 (en) 1993-03-04 1993-03-04 Self-learning alarm system for object monitoring with automatic object detection via a combined ultrasound/image sensor

Publications (1)

Publication Number Publication Date
DE9303120U1 true DE9303120U1 (en) 1993-07-22

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DE9303120U Expired - Lifetime DE9303120U1 (en) 1993-03-04 1993-03-04 Self-learning alarm system for object monitoring with automatic object detection via a combined ultrasound/image sensor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9411201U1 (en) * 1994-07-11 1995-11-09 Siemens AG, 80333 München Alarm system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9411201U1 (en) * 1994-07-11 1995-11-09 Siemens AG, 80333 München Alarm system

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