EP0616307B1 - Intrusion detector - Google Patents
Intrusion detector Download PDFInfo
- Publication number
- EP0616307B1 EP0616307B1 EP19940103566 EP94103566A EP0616307B1 EP 0616307 B1 EP0616307 B1 EP 0616307B1 EP 19940103566 EP19940103566 EP 19940103566 EP 94103566 A EP94103566 A EP 94103566A EP 0616307 B1 EP0616307 B1 EP 0616307B1
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- EP
- European Patent Office
- Prior art keywords
- interlocking device
- light source
- housing
- lid
- intrusion 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.)
- Expired - Lifetime
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- 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
- G08B29/046—Monitoring of the detection circuits prevention of tampering with detection circuits
Definitions
- the invention relates to an intrusion detector with one enclosed by a housing Motion sensor and an evaluation circuit that emits a signal when the output signal of the motion sensor in a predetermined manner changes
- the housing consists of a lid and a bottom, of which the Lid contains a locking device which fixes the lid to the bottom connects and there is a light source inside the housing.
- intrusion detectors are already on the market in different versions available. They are used to detect movements of intruded objects or people within a certain room. It is mainly about around two types of detectors, the so-called passive infrared detectors and the ultrasonic detectors. Combinations of these two detection principles are also used.
- the detectors are part of a system which, in addition to the detectors, is still off a signal reception center and acoustic warning devices, the detectors are connected to a control center via a network.
- These intrusion detectors exist generally consisting of a two-part housing, which contains a motion sensor, such as an infrared sensor or an ultrasonic sensor, and an evaluation circuit encloses.
- the housing also has an entry window, through which the infrared rays or the ultrasonic waves to the sensor inside the housing can reach.
- the two-part housing consists of a bottom and a cover part, which is usually by a screw on the side of the Housing or be connected to each other by a snap lock.
- One of the main problems when using such detectors is one To prevent sabotage. This means every attempt, a detector or its connection with the headquarters through direct or indirect intervention or manipulation to put out of operation. To prevent such sabotage, point out some detectors also open a switch that triggers a signal when the Lid part is separated from the bottom part. This signal is generated by the evaluation circuit reproduced, for example, as a fault at the control center or as an acoustic warning signal.
- Other detectors such as that described in US-A-4,451,733, are with one Lid switch equipped. These switches are so with respect to the two housing parts arranged that when lifting the lid part from the bottom part to a certain one Height of the switch is actuated and a signal is sent to the evaluation circuit becomes. These switches are used to prevent unauthorized opening of the housing and at most to complicate the sabotaging of the detector.
- a disadvantage of such circuit breakers is that it is still possible to use the Sabotage detectors without the switch being operated. This can be done by partial Loosen the screws or lift off the cover so that there is a narrow air gap arises between the two housing parts without the switch responding. Through the narrow gap, substances such as foam or paint, be inserted into the interior of the detector so that the sensor or the entry window of the detector and so the detector is made insensitive.
- EP-A-0 189 536 One method, a sabotage of a passive infrared detector by covering the sensor or to prevent the entry window is described in EP-A-0 189 536.
- a radiation source is attached to the housing cover, with which the permeability the entrance window and the radiation path to the sensor is monitored.
- the locking device has a movable opening through which when correctly locked by The lid and base of the light source inside the housing are visible from the outside is.
- the opening in the locking device moves when actuated the locking relative to the light source arranged under the housing cover. Become the housing cover and the housing base by operating the locking device firmly connected with each other, the opening via the light source is also made brought. The light emanating from it comes out through the opening and is also visible to the eye from a distance. Are the two housing parts not firmly connected, the opening is not above the light source. In this case, no light is visible from the outside.
- the locking device preferably consists of a rotatable screw cap.
- the housing can be rotated 90 °, for example Screw cap to be closed and the opening via the light source be moved.
- a sliding lock can also be used be used, which also brings the opening over the light source as soon as the two housing parts are firmly connected.
- the screw cap with a Security screw their solution only with the appropriate special tool is possible.
- the light source can be directly under the housing cover be arranged. In a further embodiment, however, it can also be vertical be sunk to the housing cover or arranged laterally. To turn the light on An optical fiber or optical components such as mirrors and prisms can be used to guide the opening or lenses are used.
- the locking device with a Switching element are connected, which in the event of unlawful opening of the Lock is actuated and sends a fault signal to the control center.
- the housing parts are not yet separated from each other, so that there is no gap between them, through which the inside of the detector is changed could. This means that the fault is triggered when the detector is opened reported to the control center as well as by the light source before sabotage takes place could.
- the housing 1 of the intrusion detector consists of a cover 2 and a bottom 3. On the front of the cover 2 there is a screw cap 4, which locked the lid 2 to the bottom 3. There is an opening 5 in the screw cap 4 arranged, which moves with the screw cap when it is operated.
- the screw cap 4 is turned with a Phillips screwdriver by a 90 ° turn brought into the "open” or “closed” position, whereby in the "open” Position of the lid is not locked to the floor or in the “closed” Position of the lid is locked to the floor.
- Under the cover 2 is a light source 6 arranged on a circuit board 7 so that they are under the opening 5 in Screw cap 4 is when it is in the “closed” position. In this In the “closed” position, the light from the light source 6 passes through the opening 5 outward. If the screw cap 4 is in the "open” position, the Opening 5 is not above light source 6, so that no light comes out.
- a slide closure 8 is provided.
- the sliding closure 8 is, for example, with a pin by sliding in brought the "open” or “closed” position.
- the sliding closure 8 contains also an opening 5, which moves with the slide closure 8 when this is operated.
- a light source 6 is under the cover 2 on a circuit board 7 arranged so that it lies under the opening 5 in the sliding closure 8 when this is in the "closed” position.
- the light source 6 immediately To attach under the lid 2 it may also be deeper vertically or laterally be arranged under the lid, as shown in Figure 4.
- a light guide 9 in screw cap 4 To the light from the Leading light source 6 to opening 5 is a light guide 9 in screw cap 4 arranged that this ends in the opening 5.
- the end of the light guide 9 lenticular or conical. The bundling causes the light to go out even greater distance is still visible to the eye.
- a switching element 10 is attached such that it sends a signal to the The control center sends as soon as the screw cap 4 is brought into the "open" position has been.
- the signal is reported in the control center as a fault or alarm. Consequently is an attempt to open the housing 1 already when the screw cap is actuated 4 trigger a fault message or an alarm before the cover 2 removed or can be lifted from the floor 3 by a gap.
- the individual intrusion detectors can be used as a security measure on the professional locking of their housings through a simple visual inspection the illuminated opening on the locking device from a distance being checked. Control can also be carried out from the head office by checking the State of the switching element 10 are performed.
- An intrusion detector is sabotaged by opening, sabotaging and reclosing of the housing, this can be discovered by the control center is equipped with a memory function. This stores the interference signal, which was triggered by actuation of the switching element 10, and triggers when it is focused a fault message from the system.
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Description
Die Erfindung betrifft einen Intrusionsmelder mit einem von einem Gehäuse umschlossenen Bewegungssensor und einer Auswerteschaltung, welche ein Signal abgibt, wenn sich das Ausgangssignal des Bewegungssensors in einer vorbestimmten Weise ändert, wobei das Gehäuse aus einem Deckel und einem Boden besteht, wovon der Deckel eine Verriegelungsvorrichtung enthält, welche den Deckel mit dem Boden fest verbindet und im Gehäuseinnern eine Lichtquelle vorhanden ist.The invention relates to an intrusion detector with one enclosed by a housing Motion sensor and an evaluation circuit that emits a signal when the output signal of the motion sensor in a predetermined manner changes, the housing consists of a lid and a bottom, of which the Lid contains a locking device which fixes the lid to the bottom connects and there is a light source inside the housing.
Solche Intrusionsmelder sind schon in verschiedenen Ausführungen auf dem Markt erhältlich. Sie dienen zur Erkennung von Bewegungen von eingedrungenen Objekten oder Personen innerhalb eines bestimmten Raumes. Es handelt sich dabei hauptsächlich um zwei Arten von Meldern, die sogenannten Passiv-lnfrarotmelder und die Ultraschallmelder. Es werden auch Kombinationen dieser beiden Detektionsprinzipien verwendet. Die Melder sind Teil eines Systems, welches neben den Meldern noch aus einer Signalempfangszentrale und akustischen Warngeräten besteht, wobei die Melder über ein Leitungsnetz mit einer Zentrale verbunden sind. Diese Intrusionsmelder bestehen im allgemeinen aus einem zweiteiligen Gehäuse, welches einen Bewegungssensor, wie zum Beispiel einen Infrarotsensor oder einen Ultraschallsensor, und eine Auswerteschaltung umschliesst. Das Gehäuse weist ausserdem ein Eintrittsfenster auf, durch welches die Infrarotstrahlen bzw. die Ultraschallwellen zum Sensor im Gehäuseinnern gelangen können. Das zweiteilige Gehäuse besteht aus einem Boden- und einem Deckelteil, welche üblicherweise durch eine Schraube an der Seite des Gehäuses oder durch einen Schnappverschluss miteinander verbunden werden.Such intrusion detectors are already on the market in different versions available. They are used to detect movements of intruded objects or people within a certain room. It is mainly about around two types of detectors, the so-called passive infrared detectors and the ultrasonic detectors. Combinations of these two detection principles are also used. The detectors are part of a system which, in addition to the detectors, is still off a signal reception center and acoustic warning devices, the detectors are connected to a control center via a network. These intrusion detectors exist generally consisting of a two-part housing, which contains a motion sensor, such as an infrared sensor or an ultrasonic sensor, and an evaluation circuit encloses. The housing also has an entry window, through which the infrared rays or the ultrasonic waves to the sensor inside the housing can reach. The two-part housing consists of a bottom and a cover part, which is usually by a screw on the side of the Housing or be connected to each other by a snap lock.
Eines der Hauptprobleme bei der Anwendung solcher Melder besteht darin, eine Sabotage zu verhindern. Hierunter versteht man jeden Versuch, einen Melder oder seine Verbindung mit der Zentrale durch direkte oder indirekte Eingriffe oder Manipulationen ausser Betrieb zu setzen. Um eine solche Sabotage zu verhindern, weisen manche Melder zusätzlich einen Schalter auf, welcher ein Signal auslöst, wenn der Deckelteil vom Bodenteil getrennt wird. Dieses Signal wird durch die Auswerteschaltung zum Beispiel als Störung an die Zentrale oder als akustisches Warnsignal wiedergegeben. Andere Melder, wie der in der US-A-4,451,733 beschriebene, sind mit einem Deckelschalter ausgestattet. Diese Schalter sind bezüglich der beiden Gehäuseteile so angeordnet, dass beim Abheben des Deckelteils vom Bodenteil bis zu einer bestimmten Höhe der Schalter betätigt wird und ein Signal an die Auswerteschaltung abgegeben wird. Diese Schalter dienen somit dazu, ein unbefugtes Öffnen des Gehäuses und allenfalls das Sabotieren des Melders zu erschweren. One of the main problems when using such detectors is one To prevent sabotage. This means every attempt, a detector or its connection with the headquarters through direct or indirect intervention or manipulation to put out of operation. To prevent such sabotage, point out some detectors also open a switch that triggers a signal when the Lid part is separated from the bottom part. This signal is generated by the evaluation circuit reproduced, for example, as a fault at the control center or as an acoustic warning signal. Other detectors, such as that described in US-A-4,451,733, are with one Lid switch equipped. These switches are so with respect to the two housing parts arranged that when lifting the lid part from the bottom part to a certain one Height of the switch is actuated and a signal is sent to the evaluation circuit becomes. These switches are used to prevent unauthorized opening of the housing and at most to complicate the sabotaging of the detector.
Ein Nachteil solcher Schutzschalter besteht darin, dass es dennoch möglich ist, den Melder zu sabotieren, ohne dass der Schalter betätigt wird. Dies kann durch teilweises Lösen der Schrauben bzw. Abheben des Deckels erfolgen, so dass ein schmaler Luftspalt zwischen den beiden Gehäuseteilen entsteht, ohne dass der Schalter anspricht. Durch den schmalen Spalt können Substanzen, wie zum Beispiel Schaum oder Farbe, in das Melderinnere eingeführt werden, so dass der Sensor oder das Eintrittsfenster des Melders verdeckt und so der Melder unempfindlich gemacht wird.A disadvantage of such circuit breakers is that it is still possible to use the Sabotage detectors without the switch being operated. This can be done by partial Loosen the screws or lift off the cover so that there is a narrow air gap arises between the two housing parts without the switch responding. Through the narrow gap, substances such as foam or paint, be inserted into the interior of the detector so that the sensor or the entry window of the detector and so the detector is made insensitive.
Eine Methode, eine Sabotage eines Passiv-lnfrarotmelders durch Abdeckung des Sensors oder des Eintrittsfensters zu verhindern, ist in der EP-A-0 189 536 beschrieben. Hier ist eine Strahlungsquelle am Gehäusedeckel befestigt, mit welcher die Durchlässigkeit des Eintrittsfensters sowie des Strahlungspfads bis zum Sensor überwacht wird.One method, a sabotage of a passive infrared detector by covering the sensor or to prevent the entry window is described in EP-A-0 189 536. Here, a radiation source is attached to the housing cover, with which the permeability the entrance window and the radiation path to the sensor is monitored.
Ein wichtiger Bestandteil der Massnahmen, welche eine Sabotage verhindern können, ist die korrekte Installierung der Melder. Es kommt wiederholt vor, dass ein Melder nicht korrekt verschlossen wird und deshalb die Sabotageschutzvorrichtung nicht einwandfrei funktioniert. Jedoch ist eine korrekte Verschliessung des Meldergehäuses abhängig von der Sorgfalt des Installationspersonals. Diese kann an den gegenwärtig auf dem Markt erhältlichen Meldern nur durch einen Test von der Zentrale aus oder visuell aus der Nähe kontrolliert werden. Ein solcher visueller Test aus der Nähe kann jedoch beschwerlich oder sogar unmöglich sein, wenn der Melder an einem schwer erreichbaren oder erhöhten Ort montiert ist. Die Erfindung setzt sich die Aufgabe, die genannten Nachteile der bekannten Intrusionsmelder zur Verhinderung der Sabotage zu verringern, insbesondere die Kontrolle der korrekten Verschliessung der Melder zu erleichtern und Sabotageversuche zu erschweren.An important part of the measures that can prevent sabotage is the correct installation of the detectors. It happens repeatedly that a detector is not closed correctly and therefore the sabotage protection device is not works flawlessly. However, the detector housing is properly closed depending on the care of the installation personnel. This can be done at the moment Detectors available on the market can only be tested from the control center or be visually checked up close. Such a visual test up close can however difficult or even impossible if the detector is difficult on one accessible or elevated place is mounted. The invention sets itself the task mentioned disadvantages of the known intrusion detectors to prevent sabotage to reduce, especially the control of the correct closure of the detectors facilitate and complicate attempts at sabotage.
Erfindungsgemäss wird diese Aufgabe dadurch gelöst, dass die Verriegelungsvorrichtung eine bewegbare Öffnung aufweist, durch die bei korrekter Verriegelung von Deckel und Boden die im Gehäuseinnern angebrachte Lichtquelle von aussen sichtbar ist.According to the invention, this object is achieved in that the locking device has a movable opening through which when correctly locked by The lid and base of the light source inside the housing are visible from the outside is.
Die in der Verriegelungsvorrichtung angebrachte Öffnung bewegt sich bei Betätigung der Verriegelung relativ zu der unter dem Gehäusedeckel angeordneten Lichtquelle. Werden der Gehäusedeckel und der Gehäuseboden durch Betätigung der Verriegelungsvorrichtung miteinander fest verbunden, wird zugleich die Öffnung über die Lichtquelle gebracht. Das von ihr ausgehende Licht gelangt durch die Öffnung nach aussen und ist auch aus einer Distanz für das Auge sichtbar. Sind die beiden Gehäuseteile nicht miteinander fest verbunden so befindet sich die Öffnung nicht über der Lichtquelle. In diesem Fall ist von aussen kein Licht sichtbar. The opening in the locking device moves when actuated the locking relative to the light source arranged under the housing cover. Become the housing cover and the housing base by operating the locking device firmly connected with each other, the opening via the light source is also made brought. The light emanating from it comes out through the opening and is also visible to the eye from a distance. Are the two housing parts not firmly connected, the opening is not above the light source. In this case, no light is visible from the outside.
Vorzugsweise besteht die Verriegelungsvorrichtung aus einem drehbaren Schraubverschluss. Dadurch kann das Gehäuse beispielsweise durch eine 90°-Drehung des Schraubverschlusses geschlossen werden und die Öffnung über die Lichtquelle bewegt werden. Anstelle eines Drehverschlusses kann auch ein Schiebeverschluss eingesetzt werden, welcher ebenfalls die Öffnung über die Lichtquelle bringt, sobald die beiden Gehäuseteile miteinander fest verbunden sind.The locking device preferably consists of a rotatable screw cap. As a result, the housing can be rotated 90 °, for example Screw cap to be closed and the opening via the light source be moved. Instead of a twist lock, a sliding lock can also be used be used, which also brings the opening over the light source as soon as the two housing parts are firmly connected.
Soll weiter verhindert werden, dass nach korrekter Verriegelung des Gehäuses durch den Fachmann dieses durch Laien geöffnet wird, kann der Schraubverschluss mit einer Sicherheitsschraube versehen werden, deren Lösung nur durch entsprechendes Spezialwerkzeug möglich ist. Die Lichtquelle kann unmittelbar unter dem Gehäusedeckel angeordnet sein. Sie kann jedoch in einer weiteren Ausführungsform auch senkrecht zum Gehäusedeckel versenkt sein oder seitlich angeordnet sein. Um das Licht zur Öffnung zu führen, können ein Lichtleiter oder optische Bauteile wie Spiegel, Prismen oder Linsen eingesetzt werden.Should be further prevented that after correct locking of the housing by the specialist can open this for laymen, the screw cap with a Security screw, their solution only with the appropriate special tool is possible. The light source can be directly under the housing cover be arranged. In a further embodiment, however, it can also be vertical be sunk to the housing cover or arranged laterally. To turn the light on An optical fiber or optical components such as mirrors and prisms can be used to guide the opening or lenses are used.
Um eine Sabotage des Melders durch Öffnen des Melders und Verändern des Inneren des Melders weiter zu erschweren, kann die Verriegelungsvorrichtung mit einem Schaltelement verbunden werden, welches im Fall einer unrechtmässigen Öffnung der Verriegelung betätigt wird und ein Störsignal an die Zentrale leitet. Zu diesem Zeitpunkt sind die Gehäuseteile noch nicht voneinander getrennt, so dass kein Spalt zwischen ihnen besteht, durch welchen das Innere des Melders verändert werden könnte. Somit wird die Störung schon beim Versuch den Melder zu öffnen sowohl bei der Zentrale als auch durch die Lichtquelle gemeldet, bevor eine Sabotage statffinden konnte.To sabotage the detector by opening the detector and changing the interior To further complicate the detector, the locking device with a Switching element are connected, which in the event of unlawful opening of the Lock is actuated and sends a fault signal to the control center. At this time the housing parts are not yet separated from each other, so that there is no gap between them, through which the inside of the detector is changed could. This means that the fault is triggered when the detector is opened reported to the control center as well as by the light source before sabotage takes place could.
Die Erfindung wird im folgenden anhand der in den Figuren 1 bis 4 wiedergegebenen Ausführungsbeispiele näher erläutert:
Figur 1- zeigt einen Längsschnitt durch einen Passiv-Infrarotmelder gemäss vorliegender Erfindung, bei dem die Verriegelungsvorrichtung drehbar ist.
Figur 2- zeigt die Vorderansicht eines Passiv-lnfrarotmelders gemäss
Figur 1. Figur 3- zeigt einen Längsschnitt durch eine andere Ausführungsform eines Passiv-Infrarotmelders, bei dem die Verriegelungsvorrichtung schiebbar ist.
Figur 4- zeigt einen Längsschnitt durch eine weitere Ausführung eines Passiv-Infrarotmelders, bei dem die Verriegelungsvorrichtung einen Lichtleiter enthält.
- Figure 1
- shows a longitudinal section through a passive infrared detector according to the present invention, in which the locking device is rotatable.
- Figure 2
- shows the front view of a passive infrared detector according to FIG. 1.
- Figure 3
- shows a longitudinal section through another embodiment of a passive infrared detector, in which the locking device can be pushed.
- Figure 4
- shows a longitudinal section through a further embodiment of a passive infrared detector, in which the locking device contains a light guide.
Das Gehäuse 1 des Intrusionsmelders besteht aus einem Deckel 2 und einem Boden
3. Auf der Vorderseite des Deckels 2 befindet sich ein Schraubverschluss 4, welcher
den Deckel 2 mit dem Boden 3 verriegelt. Im Schraubverschluss 4 ist eine Öffnung 5
angeordnet, welche sich mit dem Schraubverschluss bewegt, wenn dieser betätigt wird. The
Der Schraubverschluss 4 wird mit einem Kreuzschlitzschraubendreher durch eine 90°-Drehung
in die "offene" bzw. "geschlossene" Position gebracht, wobei in der "offenen"
Position der Deckel nicht mit dem Boden verriegelt ist bzw. in der "geschlossenen"
Position der Deckel mit dem Boden verriegelt ist. Unter dem Deckel 2 ist eine Lichtquelle
6 auf einer Leiterplatte 7 so angeordnet, dass sie unter der Öffnung 5 im
Schraubverschluss 4 liegt, wenn dieser in der "geschlossenen" Position ist. In dieser
"geschlossenen" Position gelangt das Licht von der Lichtquelle 6 durch die Öffnung 5
nach aussen. Ist der Schraubverschluss 4 in der "offenen" Position, befindet sich die
Öffnung 5 nicht über der Lichtquelle 6, sodass kein Licht nach aussen gelangt.The
In einer anderen Ausführung, in Figur 3 dargestellt, ist ein Schiebeverschluss 8 vorgesehen.
Der Schiebeverschluss 8 wird zum Beispiel mit einem Stift durch Schieben in
die "offene" bzw. "geschlossene" Position gebracht. Der Schiebeverschluss 8 enthält
ebenfalls eine Öffnung 5, welche sich mit dem Schiebeverschluss 8 bewegt, wenn
dieser betätigt wird. Eine Lichtquelle 6 ist unter dem Deckel 2 auf einer Leiterplatte 7
so angeordnet, dass sie unter der Öffnung 5 im Schiebeverschluss 8 liegt, wenn dieser
sich in der "geschlossenen" Position befindet.In another embodiment, shown in Figure 3, a
Sollte es aus Konstruktions- oder Platzgründen ungünstig sein, die Lichtquelle 6 unmittelbar
unter dem Deckel 2 anzubringen, darf sie auch tiefer senkrecht oder auch seitlich
unter dem Deckel angeordnet sein, wie in Figur 4 dargestellt. Um das Licht von der
Lichtquelle 6 zur Öffnung 5 zu führen, ist ein Lichtleiter 9 im Schraubverschluss 4 so
angeordnet, dass dieser in der Öffnung 5 endet. Zwecks Bündelung des Lichts, welches
aus dem Lichtleiter 9 durch die Öffnung 5 austritt, ist das Ende des Lichtleiters 9
linsenförmig oder kegelförmig ausgebildet. Die Bündelung bewirkt, dass das Licht aus
noch grösserer Distanz mit dem Auge noch sichtbar ist.If it should be unfavorable for construction or space reasons, the
Im weiteren ist ein Schaltelement 10 derart angebracht, dass es ein Signal an die
Zentrale sendet, sobald der Schraubverschluss 4 in die "offene" Position gebracht
worden ist. In der Zentrale wird das Signal als Störung oder Alarm gemeldet. Somit
wird ein Versuch, das Gehäuse 1 zu öffnen, schon bei der Betätigung des Schraubverschlusses
4 eine Störungsmeldung oder einen Alarm auslösen, bevor der Deckel 2
entfernt oder vom Boden 3 um eine Spaltweite abgehoben werden kann.Furthermore, a switching
Mit dieser Erfindung können als Sicherheitsmassnahme die einzelnen Intrusionsmelder
auf die fachgerechte Verriegelung ihrer Gehäuse durch eine einfache visuelle Kontrolle
der aufgeleuchteten Öffnung an der Verriegelungsvorrichtung aus einer Entfernung
geprüft werden. Die Kontrolle kann ebenfalls von der Zentrale aus durch Prüfung des
Zustandes des Schaltelementes 10 durchgeführt werden. With this invention, the individual intrusion detectors can be used as a security measure
on the professional locking of their housings through a simple visual inspection
the illuminated opening on the locking device from a distance
being checked. Control can also be carried out from the head office by checking the
State of the switching
Sollte während der Unscharfstellung der Anlage, zum Beispiel während des Tages,
eine Sabotage eines Intrusionsmelders durch Öffnen, Sabotieren und Wiederverschliessen
des Gehäuses erfolgt sein, kann diese entdeckt werden, indem die Zentrale
mit einer Memory-Funktion ausgestattet ist. Diese speichert das Störsignal, welches
durch Betätigung des Schaltelementes 10 ausgelöst wurde, und löst bei der Scharfstellung
der Anlage eine Störmeldung aus.If the system is disarmed, for example during the day,
An intrusion detector is sabotaged by opening, sabotaging and reclosing
of the housing, this can be discovered by the control center
is equipped with a memory function. This stores the interference signal, which
was triggered by actuation of the switching
Claims (7)
- Intrusion detector having a movement sensor surrounded by a housing (1) and an evaluation circuit which emits a signal if the output signal of the movement sensor changes in a predetermined way, the housing (1) comprising a lid (2) and a base (3), of which the lid (2) contains an interlocking device (4) which firmly joins the lid (2) to the base (3), and a light source being present in the housing interior, characterized in that the interlocking device (4) has a movable opening (5) through which the light source (6) disposed in the housing interior is visible from the outside if lid (2) and base (3) are correctly interlocked.
- Intrusion detector according to Patent Claim 1, characterized in that the interlocking device (4) is rotatable.
- Intrusion detector according to Patent Claim 1, characterized in that the interlocking device comprises a slider (8).
- Intrusion detector according to one of Patent Claims 1 to 3, characterized in that the interlocking device (4) has a security screw which can be undone only by means of a matching special tool.
- Intrusion detector according to one of Patent Claims 1 to 4, characterized in that the light source (6) is disposed in a countersunk manner under the lid (2) of the housing (1) or in a laterally displaced manner with respect to the interlocking device (4), and in that a light guide (9) conducts the light originating from the light source (6) to the opening (5) in the interlocking device (4).
- Intrusion detector according to one of Patent Claims 1 to 4, characterized in that the light source (6) is disposed in a countersunk manner or a laterally displaced manner from the interlocking device (4) and the light originating from the light source (6) is conducted by mirrors, lenses or prisms to the opening (5) in the interlocking device (4).
- Intrusion detector according to one of Patent Claims 1 to 6, characterized in that a switching element (10) is provided which triggers an alarm signal if the interlocking device is opened.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH847/93 | 1993-03-19 | ||
| CH84793A CH685408A5 (en) | 1993-03-19 | 1993-03-19 | Intrusion detectors. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0616307A1 EP0616307A1 (en) | 1994-09-21 |
| EP0616307B1 true EP0616307B1 (en) | 1998-04-22 |
Family
ID=4196601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19940103566 Expired - Lifetime EP0616307B1 (en) | 1993-03-19 | 1994-03-09 | Intrusion detector |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0616307B1 (en) |
| AU (1) | AU663989B2 (en) |
| CH (1) | CH685408A5 (en) |
| DE (1) | DE59405743D1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2829271B1 (en) * | 2001-08-28 | 2005-12-02 | J C Decaux | TELESURVEILLANCE SYSTEM FOR LUMINOUS DISPLAY DEVICE |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3643249A (en) * | 1970-03-16 | 1972-02-15 | Ralph E Haywood | Warning device for indicating locked position of door |
| FR2567331B1 (en) * | 1984-07-09 | 1987-06-26 | Vibrachoc Sa | DEVICE FOR VISUALIZING THE PLUG OF ELECTRICAL CONNECTORS ON AN AIRCRAFT TRAY |
| US4683741A (en) * | 1986-07-14 | 1987-08-04 | Fields Roy A | Light signal for door knob and lock assembly |
| US5111007A (en) * | 1988-08-01 | 1992-05-05 | The Eastern Company | Switch lock with lighted position indicator |
| FR2681134B1 (en) * | 1991-09-05 | 1994-09-09 | Sagem | DEVICE FOR DETECTING THE OPENING OF AN APPARATUS. |
-
1993
- 1993-03-19 CH CH84793A patent/CH685408A5/en not_active IP Right Cessation
-
1994
- 1994-02-16 AU AU55148/94A patent/AU663989B2/en not_active Ceased
- 1994-03-09 EP EP19940103566 patent/EP0616307B1/en not_active Expired - Lifetime
- 1994-03-09 DE DE59405743T patent/DE59405743D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| AU5514894A (en) | 1994-09-22 |
| EP0616307A1 (en) | 1994-09-21 |
| AU663989B2 (en) | 1995-10-26 |
| CH685408A5 (en) | 1995-06-30 |
| DE59405743D1 (en) | 1998-05-28 |
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