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    A METHOD, A DEVICE AND A SYSTEM FOR PREVENTING FALSE ALARMS IN A THEFT-PREVENTING SYSTEM
    52.
    发明公开
    A METHOD, A DEVICE AND A SYSTEM FOR PREVENTING FALSE ALARMS IN A THEFT-PREVENTING SYSTEM 有权
    方法，设备及系统的防盗系统，防止误报警

    公开(公告)号：EP2156419A1

    公开(公告)日：2010-02-24

    申请号：EP08736126.7

    申请日：2008-04-11

    申请人： Alert Metalguard ApS

    发明人： FALKENBERG, Verner ,  SØRENSEN, Søren

    IPC分类号： G08B13/24 ,  G08B29/04

    CPC分类号： G08B13/2402 ,  G08B29/046

    摘要： The invention relates to a method, a device and a system for preventing false alarms in a theft-preventing system comprising a magnetic field for detecting at least one metal object in a first detection zone and means for determining a time-difference; said method comprising the steps of detecting a first change in a parameter indicative of the magnetic field in said first detection zone; detecting a second change in the parameter indicative of the magnetic field in said first detection zone; determining a time-difference between the detection of said first change in said parameter and the detection of said second change in said parameter; and performing an action based on said time-difference. In this way, false alarms due to a metal detector falsely detecting for example movement of metal-doors in a first detection zone may be reduced/eliminated. Additionally, the false alarms due to an opening and/or closing of a door with metal parts acting as an active tag may be reduced/eliminated.

    Electronic anti-sabotage microphone grommet
    53.
    发明公开
    Electronic anti-sabotage microphone grommet 有权
    Elektronische sabotagesichere Mikrofondichtung

    公开(公告)号：EP2075773A1

    公开(公告)日：2009-07-01

    申请号：EP08172365.2

    申请日：2008-12-19

    申请人： Honeywell International Inc.

    发明人： Piel, Kevin G. ,  Adonailo, Robert S. ,  Orlando, Robert J.

    IPC分类号： G08B29/04 ,  G08B13/16

    CPC分类号： G08B13/04 ,  G08B13/1672 ,  G08B29/046

    摘要： A tamper detection apparatus includes a housing defining an internal cavity. A sensing device embodied as a microphone is positioned within the internal cavity of the housing, which may also be a protective grommet. A conductive element spans the internal cavity and is positioned in front of the microphone. The conductive element initiates a fault signal when a specified electrical condition is met to indicate a tampering or an attempted tampering with the microphone. The specified electrical condition may include an open circuit or a short circuit. The conductive element is in the form of a membrane or wire mesh.

    摘要翻译： 篡改检测装置包括限定内腔的壳体。 实现为麦克风的感测装置定位在壳体的内部空腔内，其也可以是保护索环。 导电元件跨越内部空腔并位于麦克风的前面。 当满足指定的电气条件以指示篡改或尝试篡改麦克风时，导电元件启动故障信号。 指定的电气条件可能包括开路或短路。 导电元件是膜或丝网的形式。

    INTRUSION PREVENTING APPARATUS FOR FENCES OR THE LIKE
    55.
    发明授权
    INTRUSION PREVENTING APPARATUS FOR FENCES OR THE LIKE 有权
    EINDRINGVERHINDERUNGSVORRICHTUNG栅栏等

    公开(公告)号：EP1738335B1

    公开(公告)日：2007-12-05

    申请号：EP04727093.9

    申请日：2004-04-13

    申请人： Ciordinik, Federico ,  Doni, Roberto

    发明人： CIORDINIK, Federico

    IPC分类号： G08B13/12 ,  G08B13/186 ,  G08B29/04

    CPC分类号： G08B13/124 ,  G08B13/186 ,  G08B29/046

    摘要： The invention relates to an intrusion preventing apparatus for fences (1, 2) comprising one or more cables (3) composed of a fiber optic bundle (103) and an outer protective sheath (203), which longitudinally subtend a perimeter to be protected and are supported at a plurality of vertical spaced posts (4) and wherein, at least at some of said posts (4), means (8, 9) are provided for deforming the cables (3), which may be moved from an idle position to an operating cable (3) deforming position in which an optical signal is attenuated below a threshold value, which means (8, 9) are operated as the tension of the cable (3) is increased. According to the invention, said deforming means are a pair of clamping jaws (8, 9) facing toward each other on opposite sides of the cable (3) and freely pivoting on pins (10) along the axis of the cable (3), which jaws, in the idle position, engage the outer sheath (203) of the cable (3) with a predetermined force without deforming it whereas, as the tension of the cable (3) increases, they are urged by the cable (3) into an arc-shaped pivotal motion, thereby causing the cable (3) to be pinched. The invention further addresses tamper preventing means (12, 13) for the apparatus. Said deforming and/or pinching means are disposed in a housing which is formed by two separable parts and has tamper indicating means composed of second fiber optic cable deforming and/or pinching means.

    Tamper switch arrangement
    57.
    发明公开
    Tamper switch arrangement 有权
    Sabotagekontaktanordnung

    公开(公告)号：EP1696399A3

    公开(公告)日：2007-04-25

    申请号：EP06003661.3

    申请日：2006-02-23

    申请人： ROBERT BOSCH GMBH

    发明人： Castle, Scott T. ,  DeLozier, Paul F. ,  Markese, Ronald J. Jr.

    IPC分类号： G08B29/04

    CPC分类号： G08B29/046

    摘要： A tamper switch arrangement detects tampering with a device, and includes a tamper switch assembly having a tamper switch with a first part and a second part. The first and second parts are movable relative to each other between an open switch position and a closed switch position. The tamper switch is biased into one of the open and closed switch positions. An enclosure substantially encloses the tamper switch assembly and the device. The enclosure includes a door and an opening disposed opposite the door. The enclosure is sized such that the tamper switch assembly may be compressed between an inner surface of the door and a second surface via the opening to thereby overcome the bias and actuate the tamper switch into an other of the open and closed switch positions.

    TESTING A FIRE DETECTOR SENSOR
    59.
    发明公开
    TESTING A FIRE DETECTOR SENSOR 有权
    检测传感FEUERMELDER

    公开(公告)号：EP1743308A1

    公开(公告)日：2007-01-17

    申请号：EP05737836.6

    申请日：2005-04-29

    申请人： Thorn Security Limited

    发明人： BENNETT, Steve

    IPC分类号： G08B29/14 ,  G08B29/12 ,  G08B29/04 ,  G01N27/416

    CPC分类号： G08B29/145 ,  G08B29/043 ,  G08B29/123

    摘要： A method is disclosed for testing the functionality of a sensor (1) of a fire detector during operation thereof. The method comprises applying a current-limited test signal to the sensor (1), the test signal being such that the impedance of the sensor is such as to absorb the current-limited test signal when the sensor is operating normally; and applying the output of the sensor to a test signal detector (7). The arrangement is such that the test signal passes the output terminal of the sensor (1) only when the sensor is not operating normally.

    INTRUSION PREVENTING APPARATUS FOR FENCES OR THE LIKE
    60.
    发明公开
    INTRUSION PREVENTING APPARATUS FOR FENCES OR THE LIKE 有权
    入侵或类似的入侵防止设备

    公开(公告)号：EP1738335A1

    公开(公告)日：2007-01-03

    申请号：EP04727093.9

    申请日：2004-04-13

    申请人： Ciordinik, Federico ,  Doni, Roberto

    发明人： CIORDINIK, Federico

    IPC分类号： G08B13/12 ,  G08B13/186 ,  G08B29/04

    CPC分类号： G08B13/124 ,  G08B13/186 ,  G08B29/046

    摘要： The invention relates to an intrusion preventing apparatus for fences (1, 2) comprising one or more cables (3) composed of a fiber optic bundle (103) and an outer protective sheath (203), which longitudinally subtend a perimeter to be protected and are supported at a plurality of vertical spaced posts (4) and wherein, at least at some of said posts (4), means (8, 9) are provided for deforming the cables (3), which may be moved from an idle position to an operating cable (3) deforming position in which an optical signal is attenuated below a threshold value, which means (8, 9) are operated as the tension of the cable (3) is increased. According to the invention, said deforming means are a pair of clamping jaws (8, 9) facing toward each other on opposite sides of the cable (3) and freely pivoting on pins (10) along the axis of the cable (3), which jaws, in the idle position, engage the outer sheath (203) of the cable (3) with a predetermined force without deforming it whereas, as the tension of the cable (3) increases, they are urged by the cable (3) into an arc-shaped pivotal motion, thereby causing the cable (3) to be pinched. The invention further addresses tamper preventing means (12, 13) for the apparatus. Said deforming and/or pinching means are disposed in a housing which is formed by two separable parts and has tamper indicating means composed of second fiber optic cable deforming and/or pinching means.

    摘要翻译： 本发明涉及用于围栏（1,2）的防侵入装置，其包括由光纤束（103）和外保护套（203）组成的一根或多根电缆（3），所述电缆（3）纵向对接待保护的周边并且 被支撑在多个垂直隔开的柱（4）处，并且其中，至少在一些所述柱（4）处，设置有用于使缆绳（3）变形的装置（8,9），所述缆绳可以从空闲位置 （3）变形的位置，其中光学信号衰减到阈值以下，这意味着（8,9）随着电缆（3）的张力增加而操作。 根据本发明，所述变形装置是在电缆（3）的相对侧上彼此面对并且沿着电缆（3）的轴线在销（10）上自由枢转的一对夹爪（8,9）， 在静止位置上，该钳口以预定力与电缆（3）的外护套（203）接合而不使其变形，而随着电缆（3）的张力增加，它们被电缆（3）推动， 成弧形的枢转运动，从而导致线缆（3）被夹紧。 本发明还涉及该装置的防篡改装置（12,13）。 所述变形和/或夹紧装置设置在由两个可分离部分形成的壳体中，并且具有由第二光缆变形和/或夹紧装置组成的篡改指示装置。