EP0510395A1 - Apparatus for monitoring the functioning of a passive infra-red movement detector in a hazard detection system - Google Patents
Apparatus for monitoring the functioning of a passive infra-red movement detector in a hazard detection system Download PDFInfo
- Publication number
- EP0510395A1 EP0510395A1 EP92105636A EP92105636A EP0510395A1 EP 0510395 A1 EP0510395 A1 EP 0510395A1 EP 92105636 A EP92105636 A EP 92105636A EP 92105636 A EP92105636 A EP 92105636A EP 0510395 A1 EP0510395 A1 EP 0510395A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transmitter
- infrared
- pirm
- sen
- detector
- 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- Withdrawn
Links
Images
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
- G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
- G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/02—Monitoring continuously signalling or alarm systems
- G08B29/04—Monitoring of the detection circuits
Definitions
- the invention relates to a device for function monitoring according to the preamble of claim 1.
- Passive infrared motion detectors are increasingly being used as intrusion detectors in alarm systems. It had to be accepted that it was difficult to carry out an automatic function check with these passive infrared motion detectors. In addition to the technical failure of the infrared sensor, particular attention had to be paid to simple manipulations that could change or severely limit the detection range of the detector. For this purpose, it was sufficient to disguise the optical path to the detection area by means of diaphragms or deflecting mirrors, or to spray the entry window of the sensor with an invisible, infrared-absorbing lacquer.
- European patent application 0 189 536 describes an infrared intrusion detector in which functional monitoring is achieved by asymmetrically irradiating the two sensor elements with a radiation source through the entrance window.
- a method and system for checking the function of a room monitoring system in which a signal transmitter is arranged in the field of view of the room monitoring detector, a monitoring center generating a control signal with which the signal transmitter is activated and then a corresponding one Control signal signal signal emits, which is received by the detector and evaluated in the monitoring center.
- control system is integrated in the detector housing and therefore only covers (e.g. spraying) can be detected directly on the sensor.
- Introducing deflecting mirrors, rotating the sensor and installing blinds at some distance from the sensor remain undetected in such control systems.
- the signal sources are always actively connected to the signaling system via lines or radio and are controlled via these connections from the monitoring center in order to then emit their signal.
- a major disadvantage is the relocation of the monitored control and power lines, which requires high installation costs and increased energy supply for radiant heaters.
- This object is achieved in a device for function monitoring described at the outset with the features of claim 1.
- At least one infrared transmitter is arranged within the monitoring area of the infrared motion detector, which independently of the motion detector or a monitoring center continuously sends coded signals that are received by an infrared receiver in the infrared motion detector.
- the receiver and the transmitter form a light barrier, which causes an alarm signal when interrupted.
- the evaluation and processing of the received light signals can be carried out either in the motion detector itself in the microcontroller of the detector electronics provided there or in the alarm center of the hazard alarm system, in which case the received signals are transmitted directly to the center.
- an active light barrier which preferably works in the infrared range, is thus formed within the monitoring range of the passive infrared motion detector, the transmitting part of the light barrier being attached, for example, to the edge of the detection range.
- the receiving part of the light barrier is mounted in the motion detector or integrated into the receiving optics of the motion detector in a particularly advantageous manner. This has the advantage that even a very slowly moving intruder interrupts the active light barrier at some point and is discovered by it.
- the transmitting part works as a free-running, preferably battery-operated infrared transmitter.
- the transmitter can also be connected to an existing power socket with appropriate training, so that it from normal lighting network draws its energy, but is not somehow controlled from the control center or from the actual hazard detector.
- the transmitter can additionally be equipped with monitoring contacts, e.g. be provided with cover contacts or window contacts, or other securing elements and query them for their condition.
- the transmitter then transmits this contact status information to the receiving part at short intervals by means of short, individually coded infrared signals.
- the integrity of the transmitter can also be checked continuously. Outwitting by jammers or an unnoticed change in the transmitter location is thus prevented or recognized. An attempt to outwit by an extremely slow movement as well as by preventing heat radiation from the intruder is detected with this device because the active infrared path is interrupted.
- the passive infrared motion detector PIRM is arranged in an upper corner of a room to be monitored.
- the receiving device infrared light receiver EMP
- the monitoring area ÜB which the PIRM detector illuminates, is indicated schematically.
- Two infrared light transmitters SEN1, SEN2 are shown here by way of example at the edge of the monitoring area arranged, each forming a light barrier LS to the detector PIRM and continuously transmitting their coded transmission signals KS.
- the passive infrared motion detector PIRM with its actual infrared sensor IRS, the receiving optics EO and the additional infrared light receiver EMP.
- the detector illuminates the monitoring area ÜB, on the edge areas of which two infrared light transmitters SEN1, SEN2 are arranged.
- the transmitter SEN1 additionally has a monitoring contact Ük1, which is only indicated here and which can be a window contact, for example.
- the second transmitter SEN2 has two monitoring contacts UK2 and UK3, as indicated by way of example, which can also be formed, for example, by a window contact and a cover securing contact.
- the constantly running transmitters SEN 1,2 emit coded transmission signals KS, which are received by the receiving device EMP in the detector PIRM and each form a light barrier LS which, if interrupted, for example if the passive infrared detector PIRM would not yet detect an intruder, an alarm to initiate.
- an IR transmitter SEN is shown as an example in the block diagram as an IR transmitter module.
- a long-term battery BAT supplies the actual transmitter part SE and the coding device COD, which also has an interrogation device AB, to interrogate connected monitoring contacts ÜK1, ÜK2, ... or fuse elements for their respective status.
- the coding device COD codes the transmission signals KS of the actual transmission part SE in accordance with the respective contact states.
- IR receivers EMP are shown in the block diagram as IR receiver modules.
- 4 is the actual one IR receiving device EE has its own microcontroller ⁇ C, which decodes the received signals based on an amplitude evaluation.
- a power supply part SV which is supplied with energy externally (network), supplies the receiving device.
- the IR receiver EMP is connected via an SS interface to the PIRM motion detector or directly to the alarm center.
- the actual IR receiving device EE is assigned a pulse processing unit PV which decodes the received and coded IR signals and then feeds them to the microcontroller ⁇ CP of the motion detector PIRM for further processing.
- the coded signals of the transmitter can be evaluated in the microcontroller of the signaling electronics and, if necessary, linked to the signals of the infrared transmitter.
- This device has the advantage of a very simple installation because no lines are required, furthermore a high level of interference immunity because the transmission signals are continuously transmitted in coded form and a high level of security against sabotage because, for example, through self-monitoring, cover contacts or the like.
- the transmitter can also be monitored.
- the transmitter or transmitters can be ideally adapted to the respective monitoring area by suitable positioning.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Burglar Alarm Systems (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Vorrichtung zur Funktionsüberwachung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for function monitoring according to the preamble of
Passiv-Infrarot-Bewegungsmelder werden in steigendem Umfang als Einbruchsmelder in Gefahrenmeldeanlagen eingesetzt.
Dabei mußte in Kauf genommen werden, daß bei diesen passiven Infrarot-Bewegungsmeldern eine automatische Funktionskontrolle nur schwer durchzuführen war. Neben dem technischen Ausfall des Infrarot-Sensors mußte insbesondere an einfache Manipulationen gedacht werden, die den Erfassungsbereich des Melders ändern bzw. stark einschränken könnten. Hierzu reichte es aus, in unscharfem Zustand den optischen Weg zum Erfassungsbereich durch Blenden oder Umlenkspiegel zu verstellen, oder aber das Eintrittsfenster des Sensors mit einem unsichtbaren, Infrarot absorbierenden Lack zu besprühen.Passive infrared motion detectors are increasingly being used as intrusion detectors in alarm systems.
It had to be accepted that it was difficult to carry out an automatic function check with these passive infrared motion detectors. In addition to the technical failure of the infrared sensor, particular attention had to be paid to simple manipulations that could change or severely limit the detection range of the detector. For this purpose, it was sufficient to disguise the optical path to the detection area by means of diaphragms or deflecting mirrors, or to spray the entry window of the sensor with an invisible, infrared-absorbing lacquer.
Um die Funktionsfähigkeit der Melder sicherzustellen, wurden unmittelbar vor dem Scharfschalten der Alarmanlage sämtliche Melder durch einen Gehtest überprüft. Diese technisch einfache Maßnahme ist aber arbeitsaufwendig und langwierig. Deshalb sind verschiedene automatische Funktionskontrollen für diesen Meldertyp vorgeschlagen worden. Zum Beispiel sind Verfahren bekannt, welche dieses Problem mit Hilfe von zusätzlichen stimulierten Wärmequellen oder auch durch Hinzufügen von aktiven Infrarot-Systemen lösen.To ensure the functionality of the detectors, all detectors were checked with a walk test immediately before the alarm system was activated. This technically simple measure is labor-intensive and lengthy. For this reason, various automatic function checks have been proposed for this type of detector. For example, methods are known which solve this problem with the aid of additional stimulated heat sources or by adding active infrared systems.
In der europäischen Patentanmeldung 0 189 536 ist ein Infrarot-Einbruchdetektor beschrieben, bei dem eine Funktionsüberwachung durch eine asymmetrische Bestrahlung der beiden Sensorelemente mit einer Strahlungsquelle durch das Eintrittsfenster hindurch erreicht wird.European patent application 0 189 536 describes an infrared intrusion detector in which functional monitoring is achieved by asymmetrically irradiating the two sensor elements with a radiation source through the entrance window.
Aus der DE-PS 37 17 369 ist ein Verfahren und System zur Funktionsprüfung einer Raumüberwachung bekannt, bei dem ein Signalgeber im Sichtbereich des Raumüberwachungs-Detektors angeordnet ist, wobei eine Überwachungszentrale ein Steuersignal erzeugt, mit dem der Signalgeber angesteuert wird und dann ein entsprechend dem Steuersignal aufweisendes Signalmuster abgibt, welches vom Detektor empfangen und in der Überwachungszentrale ausgewertet wird.From DE-PS 37 17 369 a method and system for checking the function of a room monitoring system is known, in which a signal transmitter is arranged in the field of view of the room monitoring detector, a monitoring center generating a control signal with which the signal transmitter is activated and then a corresponding one Control signal signal signal emits, which is received by the detector and evaluated in the monitoring center.
Von Nachteil ist dabei, daß bei einem Teil dieses Systems das Kontrollsystem im Meldergehäuse integriert ist und deshalb nur Abdeckungen (z.B. Zusprühen) unmittelbar am Sensor entdeckt werden können. Ein Einbringen von Umlenkspiegeln, ein Verdrehen des Sensors und das Aufstellen von Blenden in einigem Abstand von Sensor bleibt bei solchen Kontrollsystemen unentdeckt.The disadvantage here is that in part of this system the control system is integrated in the detector housing and therefore only covers (e.g. spraying) can be detected directly on the sensor. Introducing deflecting mirrors, rotating the sensor and installing blinds at some distance from the sensor remain undetected in such control systems.
Bei dem bekannten Verfahren nach der DE-PS 37 17 369 sind die Signalquellen stets aktiv mit dem Meldesystem über Leitungen oder Funk verbunden und werden über diese Verbindungen von der Überwachungszentrale aus angesteuert, um dann ihr Signal abzugeben. Ein großer Nachteil dabei ist die Verlegung der überwachten Steuer- und Energieleitungen, was hohe Montagekosten und erhöhte Energiezufuhr bei Wärmestrahlern erfordert.In the known method according to DE-PS 37 17 369, the signal sources are always actively connected to the signaling system via lines or radio and are controlled via these connections from the monitoring center in order to then emit their signal. A major disadvantage is the relocation of the monitored control and power lines, which requires high installation costs and increased energy supply for radiant heaters.
Es ist daher Aufgabe der Erfindung, das bekannte System mit außerhalb des Infrarot-Bewegungsmelders jedoch in dessen Übertragungsbereich angeordneten Infrarot-Gebern so zu verbessern und weiterzubilden, daß die obengenannten Nachteile vermieden werden. Diese Aufgabe wird bei eine eingangs beschriebenen Vorrichtung zur Funktionsüberwachung mit den Merkmalen des Anspruchs 1 gelöst.It is therefore an object of the invention to include the known system with the infrared motion detector outside of it To improve and develop infrared transmitters arranged in such a way that the above-mentioned disadvantages are avoided. This object is achieved in a device for function monitoring described at the outset with the features of
Erfindungsgemäß ist innerhalb des Überwachungsbereichs des Infrarot-Bewegungsmelders mindestens ein Infrarotsender angeordnet, der unabhängig vom Bewegungsmelder oder einer Überwachungszentrale fortlaufend codierte Signale sendet, die von einem Infrarot-Empfänger im Infrarot-Bewegungsmelder empfangen werden. Dabei bilden der Empfänger zusammen mit dem Sender eine Lichtschranke, die bei Unterbrechung ein Alarmsignal verursacht. Die Auswertung und Verarbeitung der empfangenen Lichtsignale kann entweder im Bewegungsmelder selbst im dort vorgesehenen Mikrocontroller der Melderelektronik oder aber in der Meldezentrale der Gefahrenmeldeanlage durchgeführt werden, wobei dann die empfangenen Signale unmittelbar zur Zentrale übertragen werden.According to the invention, at least one infrared transmitter is arranged within the monitoring area of the infrared motion detector, which independently of the motion detector or a monitoring center continuously sends coded signals that are received by an infrared receiver in the infrared motion detector. The receiver and the transmitter form a light barrier, which causes an alarm signal when interrupted. The evaluation and processing of the received light signals can be carried out either in the motion detector itself in the microcontroller of the detector electronics provided there or in the alarm center of the hazard alarm system, in which case the received signals are transmitted directly to the center.
Bei der erfindungsgemäßen Vorrichtung ist also innerhalb des Überwachungsbereich des passiven Infrarot-Bewegungsmelders eine aktive Lichtschranke, die vorzugsweise im Infrarotbereich arbeitet, gebildet, wobei der Sendeteil der Lichtschranke beispielsweise am Rand des Erfassungsbereichs angebracht ist. Der Empfangsteil der Lichtschranke ist im Bewegungsmelder angebracht oder in besonders vorteilhafter Weise in die Empfangsoptik des Bewegungsmelders integriert. Das hat den Vorteil, daß auch ein sich sehr langsam bewegender Eindringling irgendwann die aktive Lichtschranke unterbricht und er dadurch entdeckt wird. Dabei arbeitet im Gegensatz zu bekannten Kontrollsystemen der Sendeteil als freilaufender, vorzugsweise batteriebetriebener Infrarotsender. Der Sender kann aber auch an eine vorhandene Netzsteckdose bei entsprechender Ausbildung angeschlossen sein, so daß er vom normalen Lichtnetz her seine Energie bezieht, jedoch nicht irgendwie von der Zentrale oder vom eigentlichen Gefahrenmelder aus angesteuert wird.In the device according to the invention, an active light barrier, which preferably works in the infrared range, is thus formed within the monitoring range of the passive infrared motion detector, the transmitting part of the light barrier being attached, for example, to the edge of the detection range. The receiving part of the light barrier is mounted in the motion detector or integrated into the receiving optics of the motion detector in a particularly advantageous manner. This has the advantage that even a very slowly moving intruder interrupts the active light barrier at some point and is discovered by it. In contrast to known control systems, the transmitting part works as a free-running, preferably battery-operated infrared transmitter. The transmitter can also be connected to an existing power socket with appropriate training, so that it from normal lighting network draws its energy, but is not somehow controlled from the control center or from the actual hazard detector.
In einer Weiterbildung der Erfindung kann der Sender zusätzlich mit Überwachungskontakten, z.B. mit Deckelkontakten oder Fensterkontakten, oder anderen Sicherungselementen, versehen sein und diese auf ihren Zustand abfragen. Der Sender überträgt dann diese Kontaktzustandsinformationen in periodischen Abständen durch kurze, individuell codierte Infrarotsignale zum Empfangsteil. Auf diese Weise kann die Unversehrtheit des Senders auch fortlaufend überprüft werden. Ein Überlisten durch Störsender oder eine unbemerkte Veränderung des Senderstandortes wird somit verhindert bzw. erkannt. Sowohl ein Überlistungsversuch durch eine äußerst langsame Bewegung als auch durch Verhinderung einer Wärmeabstrahlung seitens des Eindringlings wird mit dieser Vorrichtung detektiert, weil die aktive Infrarotstrecke unterbrochen wird.In a further development of the invention, the transmitter can additionally be equipped with monitoring contacts, e.g. be provided with cover contacts or window contacts, or other securing elements and query them for their condition. The transmitter then transmits this contact status information to the receiving part at short intervals by means of short, individually coded infrared signals. In this way, the integrity of the transmitter can also be checked continuously. Outwitting by jammers or an unnoticed change in the transmitter location is thus prevented or recognized. An attempt to outwit by an extremely slow movement as well as by preventing heat radiation from the intruder is detected with this device because the active infrared path is interrupted.
Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus den Unteransprüchen und der folgenden Beschreibung, die anhand einer Zeichnung erläutert wird. Dabei zeigen
- Fig. 1 eine perspektivische Darstellung der erfindungsgemäßen Vorrichtung, angeordnet in einem Überwachungsraum,
- Fig. 2 eine ähnliche Anordnung in Draufsicht.
- Fig. 3 ein IR-Sendemodul und
- Fig. 4 und 5 je ein IR-Empfangsmodul.
- 1 is a perspective view of the device according to the invention, arranged in a monitoring room,
- Fig. 2 shows a similar arrangement in plan view.
- Fig. 3 is an IR transmitter module and
- 4 and 5 each have an IR receiver module.
In Fig. 1 ist der passive Infrarot-Bewegungsmelder PIRM in einer oberen Ecke eines zu überwachenden Raumes angeordnet. Im Bewegungsmelder ist auch die hier nicht extra gezeigte Empfangseinrichtung (Infrarot-Licht-Empfänger EMP) angeordnet. Der Überwachungsbereich ÜB, den der Melder PIRM ausleuchtet, ist schematisch angedeutet. Am Rande des Überwachungsbereichs sind hier beispielhaft zwei Infrarot-Licht-Sender SEN1, SEN2 angeordnet, die jeweils eine Lichtschranke LS zum Melder PIRM bilden und dabei kontinuierlich ihre codierten Sendesignale KS übertragen.In Fig. 1, the passive infrared motion detector PIRM is arranged in an upper corner of a room to be monitored. The receiving device (infrared light receiver EMP) not shown here is also arranged in the motion detector. The monitoring area ÜB, which the PIRM detector illuminates, is indicated schematically. Two infrared light transmitters SEN1, SEN2 are shown here by way of example at the edge of the monitoring area arranged, each forming a light barrier LS to the detector PIRM and continuously transmitting their coded transmission signals KS.
In Fig.2 ist der passive Infrarot-Bewegungsmelder PIRM mit seinem eigentlichen Infrarot-Sensor IRS, der Empfangsoptik EO und dem zusätzlich Infrarot-Licht-Empfänger EMP dargestellt. Der Melder leuchtet den Überwachungsbereich ÜB aus, an dessen Randbereiche zwei Infrarot-Lichtsender SEN1, SEN2 angeordnet sind. Der Sender SEN1 weist zusätzlich einen hier nur angedeuteten Überwachungskontakt Ük1 auf, der beispielsweise ein Fensterkontakt sein kann. Der zweite Sender SEN2 weist hier beispielshaft angedeutet zwei Überwachungskontakte ÜK2 und ÜK3 auf, die beispielsweise ebenfalls von einem Fensterkontakt und von einem Deckelsicherungskontakt gebildet sein können. Die ständig laufenden Sender SEN 1,2 strahlen codierte Sendesignale KS ab, die von der Empfangseinrichtung EMP im Melder PIRM empfangen werden und jeweils eine Lichtschranke LS bilden, die bei Unterbrechung, beispielsweise wenn auch der passive Infrarotmelder PIRM noch keinen Eindringling erkennen würde, einen Alarm veranlassen.2 shows the passive infrared motion detector PIRM with its actual infrared sensor IRS, the receiving optics EO and the additional infrared light receiver EMP. The detector illuminates the monitoring area ÜB, on the edge areas of which two infrared light transmitters SEN1, SEN2 are arranged. The transmitter SEN1 additionally has a monitoring contact Ük1, which is only indicated here and which can be a window contact, for example. The second transmitter SEN2 has two monitoring contacts UK2 and UK3, as indicated by way of example, which can also be formed, for example, by a window contact and a cover securing contact. The constantly running
In Fig. 3 ist beispielhaft ein IR-Sender SEN im Blockschaltbild als IR-Sendermodul dargestellt. Eine Langzeitbatterie BAT versorgt das eigentliche sendeteil SE und die Codiereinrichtung COD, die auch eine Abfrageeinrichtung AB aufweist, um angeschlossene Überwachungskontakte ÜK1, ÜK2, ... bzw. Sicherungselemente auf ihren jeweiligen Zustand abzufragen. Die Codiereinrichtung COD codiert entsprechend den jeweiligen Kontaktzuständen die Sendesignale KS des eigentlichen Sendeteils SE.In Fig. 3, an IR transmitter SEN is shown as an example in the block diagram as an IR transmitter module. A long-term battery BAT supplies the actual transmitter part SE and the coding device COD, which also has an interrogation device AB, to interrogate connected monitoring contacts ÜK1, ÜK2, ... or fuse elements for their respective status. The coding device COD codes the transmission signals KS of the actual transmission part SE in accordance with the respective contact states.
In Fig.4 und 5 sind IR-Empfänger EMP im Blockschaltbild als IR-Empfangsmodule dargestellt. In Fig.4 ist der eigentlichen IR-Empfangseinrichtung EE ein eigener Mikrocontroller µC zugeordnet, der die empfangenen Signale aufgrund einer Amplitudenbewertung decodiert. Ein Stromversorgungsteil SV, das extern mit Energie versorgt wird (Netz), versorgt die Empfangseinrichtung. Der IR-Empfänger EMP ist über eine Schnittstelle SS mit dem Bewegungsmelder PIRM oder direkt mit der Meldezentrale verbunden.4 and 5, IR receivers EMP are shown in the block diagram as IR receiver modules. 4 is the actual one IR receiving device EE has its own microcontroller μC, which decodes the received signals based on an amplitude evaluation. A power supply part SV, which is supplied with energy externally (network), supplies the receiving device. The IR receiver EMP is connected via an SS interface to the PIRM motion detector or directly to the alarm center.
In Fig. 5 ist der eigentlichen IR-Empfangseinrichtung EE eine Pulsverarbeitungseinheit PV zugeordnet, die die empfangenen und codierten IR-Signale decodiert und dann zur Weiterverarbeitung dem Mikrocontroller µCP des Bewegungsmelders PIRM zuführt.5, the actual IR receiving device EE is assigned a pulse processing unit PV which decodes the received and coded IR signals and then feeds them to the microcontroller μCP of the motion detector PIRM for further processing.
Wie schon erwähnt, können die codierten Signale des Senders im Mikrocontroler der Meldeelektronik ausgewertet werden und gegebenenfalls mit den Signalen des Infrarotsenders verknüpft werden. Diese Vorrichtung hat den Vorteil einer sehr einfachen Installation, weil keinerlei Leitungen erforderlich sind, ferner eine hohe Störsicherheit, weil die Sendesignale fortlaufend codiert übertragen werden und eine hohe Sabotagesicherheit, weil beispielsweise durch Selbstüberwachung, Deckelkontakte o.ä. der Sender zusätzlich überwacht werden kann. Außerdem kann zur Erzielung einer hohen Detektionssicherheit der bzw. die Sender ideal an den jeweiligen Überwachungsbereich durch geeignete Positionierung angepaßt werden.As already mentioned, the coded signals of the transmitter can be evaluated in the microcontroller of the signaling electronics and, if necessary, linked to the signals of the infrared transmitter. This device has the advantage of a very simple installation because no lines are required, furthermore a high level of interference immunity because the transmission signals are continuously transmitted in coded form and a high level of security against sabotage because, for example, through self-monitoring, cover contacts or the like. the transmitter can also be monitored. In addition, in order to achieve a high level of detection reliability, the transmitter or transmitters can be ideally adapted to the respective monitoring area by suitable positioning.
Claims (6)
daß der Infrarot-Geber als freilaufender unabhängiger Infrarot-Licht-Sender (SEN) ausgebildet ist und eine Codiereinrichtung (COD) aufweist, daß der Sender (SEN) die codierten Signale (KS) fortlaufend aussendet, daß im Bewegungsmelder (PIRM) zusätzlich ein Infrarot-Licht-Empfänger (EMP) angeordnet ist und diese codierten Signale (KS) empfängt, wobei der Empfänger (EMP) mit dem Sender (SEN) zusammen eine Lichtschranke (LS) bilden, die bei Unterbrechung ein Alarmsignal verursacht, und daß die empfangenen codierten Signale (KS) entweder dem Mikrocontroller (µC) zugeführt sind, wobei sie im Bewegungsmelder (PIRM) ausgewertet und verarbeitet werden, oder einer Übertragungseinrichtung zugeführt sind, wobei sie unmittelbar zur Melde-Zentrale der Gefahrenmeldeanlage übertragen werden.Device for function monitoring of passive infrared motion detectors (PIRM) arranged in a danger detection system, which have a receiving optics (EO), an infrared sensor (IRS) and a detector electronics with a microcontroller (µC) and signals emitted by at least one infrared transmitter received, the infrared transmitter being arranged in the monitoring area (ÜE) of the motion detector (PIRM), characterized in that
that the infrared transmitter is designed as a free-running independent infrared light transmitter (SEN) and has a coding device (COD), that the transmitter (SEN) continuously transmits the coded signals (KS), that in the motion detector (PIRM) an additional infrared -Light receiver (EMP) is arranged and receives these coded signals (KS), the receiver (EMP) together with the transmitter (SEN) forming a light barrier (LS), which causes an alarm signal when interrupted, and that the received coded Signals (KS) are either fed to the microcontroller (µC), where they are evaluated and processed in the motion detector (PIRM), or are fed to a transmission device, where they are transmitted directly to the alarm center of the hazard detection system.
dadurch gekennzeichnet, daß die codierten Signale (KS) und die Signale des Infrarot-Sensors (IRS) dem Mikrocontroller (µC) zur Auswertung zugeführt sind.Device according to claim 1,
characterized in that the coded signals (KS) and the signals of the infrared sensor (IRS) are fed to the microcontroller (µC) for evaluation.
dadurch gekennzeichnet, daß der Sender (SEN) netzunabhängig ausgebildet und mit einer Langzeitbatterie (BAT) versehen ist.Device according to claim 1,
characterized in that the transmitter (SEN) is network-independent and is provided with a long-term battery (BAT).
dadurch gekennzeichnet, daß mehrere unabhängige Sender (SEN1,SEN2 ...) an verschiedenen Stellen innerhalb des Überwachungsbereichs (ÜB) angeordnet sind, und daß jeder Sender mit einem anders codierten Signal sendet.Device according to one of the preceding claims,
characterized in that several independent transmitters (SEN1, SEN2 ...) are arranged at different locations within the monitoring area (ÜB), and in that each transmitter transmits with a differently coded signal.
dadurch gekennzeichnet, daß zumindest einem Sender mindestens ein Überwachungs- bzw. Sicherungselemente (ÜK1, ÜK2,...) zugeordnet ist, und daß der Sender (SEN) mittels einer Abfrageeinrichtung (AB) den jeweiligen Schaltzustand abfragt und entsprechend codiert zum Bewegungsmelder (PIRM) sendet.Device according to one of the preceding claims,
characterized in that at least one monitoring or security element (ÜK1, ÜK2, ...) is assigned to at least one transmitter, and that the transmitter (SEN) queries the respective switching state by means of an interrogation device (AB) and is coded accordingly to the motion detector (PIRM ) sends.
dadurch gekennzeichnet, daß der Empfänger (EMP) in unmittelbarer Nähe oder hinter der Empfangsoptik (EO) des passiven Infrarot-Bewegungsmelders (PIRM) angeordnet ist.Device according to claim 1,
characterized in that the receiver (EMP) is arranged in the immediate vicinity or behind the receiving optics (EO) of the passive infrared motion detector (PIRM).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4113264 | 1991-04-23 | ||
| DE4113264 | 1991-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0510395A1 true EP0510395A1 (en) | 1992-10-28 |
Family
ID=6430192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92105636A Withdrawn EP0510395A1 (en) | 1991-04-23 | 1992-04-01 | Apparatus for monitoring the functioning of a passive infra-red movement detector in a hazard detection system |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP0510395A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008122938A2 (en) | 2007-04-06 | 2008-10-16 | Koninklijke Philips Electronics N.V. | Line-of-sight optical detection system, and communication system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3967258A (en) * | 1973-08-06 | 1976-06-29 | Texas Instruments | Alarm system |
| WO1988000745A1 (en) * | 1986-07-24 | 1988-01-28 | Keith Jeffrey Gate | Detection system |
| DE3838873A1 (en) * | 1988-11-17 | 1990-05-31 | Buechsenschuss Hans Dieter | Wire-free infrared light barrier system |
| EP0375270A2 (en) * | 1988-12-22 | 1990-06-27 | Guardall Limited | Radiation detection arrangements and methods |
-
1992
- 1992-04-01 EP EP92105636A patent/EP0510395A1/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3967258A (en) * | 1973-08-06 | 1976-06-29 | Texas Instruments | Alarm system |
| WO1988000745A1 (en) * | 1986-07-24 | 1988-01-28 | Keith Jeffrey Gate | Detection system |
| DE3838873A1 (en) * | 1988-11-17 | 1990-05-31 | Buechsenschuss Hans Dieter | Wire-free infrared light barrier system |
| EP0375270A2 (en) * | 1988-12-22 | 1990-06-27 | Guardall Limited | Radiation detection arrangements and methods |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008122938A2 (en) | 2007-04-06 | 2008-10-16 | Koninklijke Philips Electronics N.V. | Line-of-sight optical detection system, and communication system |
| WO2008122938A3 (en) * | 2007-04-06 | 2009-01-29 | Koninkl Philips Electronics Nv | Line-of-sight optical detection system, and communication system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0646265B1 (en) | Method and device for the protection of people or objects | |
| DE60204659T2 (en) | METHOD AND DEVICE FOR OBSTACLE DETECTION AND DISTANCE MEASUREMENT BY INFRARED | |
| DE60006143T2 (en) | CONTROL OF THE TRANSMITTER OF AN ELECTRONIC GOODS SURVEILLANCE (EAS) BY TARGET DISTANCE | |
| EP0484880B1 (en) | Radio alarm system | |
| EP1164556B1 (en) | Opto-electronic intruder alarm apparatus | |
| DE19506385C2 (en) | Wireless hazard detection system and notification procedure | |
| DE102014201130A1 (en) | Method and device for determining an unauthorized intrusion on a door | |
| DE202007012255U1 (en) | Device for detecting optical radiation | |
| EP2453260B1 (en) | Self-testing monitoring sensor | |
| CH666974A5 (en) | MONITORING OF ELECTRICAL PARAMETERS AND THEIR SETTING OF A BURGLAR DETECTOR. | |
| DE19613413A1 (en) | Electronic article monitor, generating alarm signal | |
| EP0200186B1 (en) | Light barrier | |
| EP1061489A1 (en) | Intrusion detector with a device for monitoring against tampering | |
| DE4020175C2 (en) | Device for failsafe testing of an infrared sensor arrangement | |
| DE2424278C3 (en) | Monitoring system working with electromagnetic radiation | |
| DE102006053546B4 (en) | Optical sensor | |
| DE19605102A1 (en) | Infrared security system | |
| AT158U1 (en) | TURN CROSS AND METHOD FOR ITS CONTROL | |
| DE19847548A1 (en) | Arrangement for securing the rear or side region of a motor vehicle | |
| EP0510395A1 (en) | Apparatus for monitoring the functioning of a passive infra-red movement detector in a hazard detection system | |
| EP2717233B1 (en) | Device for identifying a cat for the purpose of controlling an electronic cat flap | |
| DE19801915B4 (en) | sensor system | |
| EP2259093B1 (en) | Optoelectronic sensor assembly and method for operating the sensor assembly | |
| EP1843176A1 (en) | Method for monitoring openings on the outside of aircraft against unauthorised intrusion of persons or objects | |
| DE19861128B4 (en) | Sensor arrangement for monitoring a processing machine - has door closure detectors in master-slave bus system which generate coded signals when each door is closed, whereby only if codes are identified with no errors can machine be switched on via evaluation unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB GR IT LI LU NL |
|
| 17P | Request for examination filed |
Effective date: 19930422 |
|
| 17Q | First examination report despatched |
Effective date: 19950920 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn |
Withdrawal date: 19960125 |