EP0616307B1 - Intrusionsmelder - Google Patents
Intrusionsmelder 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
- Authority
- 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
Links
Images
Classifications
-
- 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.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Description
- 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.
Claims (7)
- Intrusionsmelder mit einem von einem Gehäuse (1) umschlossenen Bewegungssensor und einer Auswerteschaltung, welche ein Signal abgibt, wenn sich das Ausgangssignal des Bewegungssensors in einer vorbestimmten Weise ändert, wobei das Gehäuse (1) aus einem Deckel (2) und einem Boden (3) besteht, wovon der Deckel (2) eine Verriegelungsvorrichtung (4) enthält, welche den Deckel (2) mit dem Boden (3) fest verbindet, und im Gehäuseinnern eine Lichtquelle vorhanden ist, dadurch gekennzeichnet, dass die Verriegelungsvorrichtung (4) eine bewegbare Öffnung (5) aufweist, durch die bei korrekter Verriegelung von Deckel (2) und Boden (3) die im Gehäuseinnern angebrachte Lichtquelle (6) von aussen sichtbar ist.
- Intrusionsmelder gemäss Patentanspruch 1, dadurch gekennzeichnet, dass die Verriegelungsvorrichtung (4) drehbar ist.
- Intrusionsmelder gemäss Patentanspruch 1, dadurch gekennzeichnet, dass die Verriegelungsvorrichtung aus einem Schieber (8) besteht.
- Intrusionsmelder gemäss einem der Patentansprüche 1 bis 3, dadurch gekennzeichnet, dass die Verriegelungsvorrichtung (4) eine Sicherheitsschraube aufweist, welche sich nur mittels eines entsprechenden Spezialwerkzeugs lösen lässt.
- Intrusionsmelder gemäss einem der Patentansprüche 1 bis 4, dadurch gekennzeichnet, dass die Lichtquelle (6) unter dem Deckel (2) des Gehäuses (1) versenkt oder seitlich bezüglich der Verriegelungsvorrichtung (4) verschoben angeordnet ist, und dass ein Lichtleiter (9) das von der Lichtquelle (6) ausgehende Licht zur Öffnung (5) in der Verriegelungsvorrichtung (4) leitet.
- Intrusionsmelder gemäss einem der Patentansprüche 1 bis 4, dadurch gekennzeichnet, dass die Lichtquelle (6) versenkt oder von der Verriegelungsvorrichtung (4) seitlich verschoben angeordnet ist und das von der Lichtquelle (6) ausgehende Licht durch Spiegel, Linsen oder Prismen zur Öffnung (5) in der Verriegelungsvorrichtung (4) geleitet wird.
- Intrusionsmelder gemäss einem der Patentansprüche 1 bis 6, dadurch gekennzeichnet, dass ein Schaltelement (10) vorgesehen ist, welches bei Öffnung der Verriegelungsvorrichtung ein Alarmsignal auslöst.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH847/93 | 1993-03-19 | ||
CH84793A CH685408A5 (de) | 1993-03-19 | 1993-03-19 | Intrusionsmelder. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0616307A1 EP0616307A1 (de) | 1994-09-21 |
EP0616307B1 true EP0616307B1 (de) | 1998-04-22 |
Family
ID=4196601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19940103566 Expired - Lifetime EP0616307B1 (de) | 1993-03-19 | 1994-03-09 | Intrusionsmelder |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0616307B1 (de) |
AU (1) | AU663989B2 (de) |
CH (1) | CH685408A5 (de) |
DE (1) | DE59405743D1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2829271B1 (fr) * | 2001-08-28 | 2005-12-02 | J C Decaux | Systeme de telesurveillance pour dispositif d'affichage lumineux |
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 (fr) * | 1984-07-09 | 1987-06-26 | Vibrachoc Sa | Dispositif de visualisation de l'enfichage de connecteurs electriques sur un plateau d'aeronef |
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 (fr) * | 1991-09-05 | 1994-09-09 | Sagem | Dispositif pour la detection de l'ouverture d'un appareil. |
-
1993
- 1993-03-19 CH CH84793A patent/CH685408A5/de not_active IP Right Cessation
-
1994
- 1994-02-16 AU AU55148/94A patent/AU663989B2/en not_active Ceased
- 1994-03-09 DE DE59405743T patent/DE59405743D1/de not_active Expired - Fee Related
- 1994-03-09 EP EP19940103566 patent/EP0616307B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AU663989B2 (en) | 1995-10-26 |
EP0616307A1 (de) | 1994-09-21 |
AU5514894A (en) | 1994-09-22 |
DE59405743D1 (de) | 1998-05-28 |
CH685408A5 (de) | 1995-06-30 |
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