Dual signal electromagnetic article theft detector
    1.
    发明授权
    Dual signal electromagnetic article theft detector 失效
    双信号电磁物品盗窃检测器

    公开(公告)号:US4511888A

    公开(公告)日:1985-04-16

    申请号:US509288

    申请日:1983-06-29

    Abstract: A transmitter emits a pulsed radio signal and a digitally encoded radio signal near each exit of a protected premises. Monitored articles carry a receiver having a first circuit for receiving the pulsed signal, a power source, and a power switch for coupling the power source to a second circuit on detection of the pulsed signal. The second circuit receives the digitally encoded signal as multiple, serially-transmitted code bits. It also contains a clock for generating timing signals synchronized by the pulsed signal in order to distinguish a plurality of code bit intervals. A processor, an associated memory, and an address counter compare the digitally encoded signal with a stored bit pattern. On receiving an improper code bit, the processor causes the power switch to decouple the power source from the second circuit to conserve power. If the received signal matches the stored bit pattern, power is maintained to the second circuit. Alarm circuitry is triggered by overflow from the address counter. The address counter is reset each time the pulsed signal is received and thus produces no overflow, but when the article is removed from the protected premises, the address counter is allowed to overflow triggering the alarm circuit.

    Abstract translation: 发射机在受保护场所的每个出口附近发射脉冲无线电信号和数字编码无线电信号。 监测物品携带具有用于接收脉冲信号的第一电路的接收器,电源和用于在检测到脉冲信号时将电源耦合到第二电路的电源开关。 第二电路接收数字编码的信号作为多个串行发送的码位。 它还包含用于产生由脉冲信号同步的定时信号的时钟,以区分多个码位间隔。 处理器,相关联的存储器和地址计数器将数字编码的信号与存储的位模式进行比较。 在接收到不正确的代码位时,处理器使电源开关将电源与第二电路分离以节省电力。 如果接收到的信号与存储的位模式匹配,则将功率保持到第二电路。 报警电路由地址计数器溢出触发。 地址计数器在每次接收到脉冲信号时复位,因此不产生溢出,但是当物品从受保护的场所移除时,地址计数器允许溢出触发报警电路。

    Security dye pack having flexible heat-resistant chemical pouch
    2.
    发明授权
    Security dye pack having flexible heat-resistant chemical pouch 失效
    安全染料包具有柔性耐热化学袋

    公开(公告)号:US5485143A

    公开(公告)日:1996-01-16

    申请号:US391838

    申请日:1995-02-21

    CPC classification number: G08B15/02

    Abstract: A security dye pack disguised as a bundle of currency for deterring robberies includes a housing formed from a stack of currency bills sewn together and having a hollow chamber formed therein. A printed circuit board is disposed within the chamber for supporting electrical components which generate an actuating signal upon detecting removal of the security dye pack from the protected premises. A flexible pouch containing dye, tear gas, or other active chemicals, is secured at one end of the printed circuit board, and a squib extends into the pouch to ignite the chemical mixture when the actuating signal is generated. The flexible pouch is formed of a heat-resistant plastic film which is easily bendable. Foam cushions, protected by heat-resistant film, are disposed above and below the pouch and circuit board. Heat resistant plastic sheets extend about the foam cushions and are secured by an elastic thread to the housing to retain the components within the hollow chamber.

    Abstract translation: 伪装成用于阻止抢劫的一沓货币的安全染料包装包括由一堆缝合在一起的并具有形成在其中的中空室的钞票组成的壳体。 印刷电路板设置在腔室内,用于支撑电气部件,该电气部件在检测到安全染料包装从受保护的场所中移除之后产生致动信号。 包含染料,催泪瓦斯或其他活性化学品的柔性袋固定在印刷电路板的一端,并且当产生致动信号时,爆管延伸到袋中以点燃化学混合物。 柔性袋由易于弯曲的耐热塑料膜形成。 由耐热膜保护的泡沫衬垫设置在袋和电路板的上方和下方。 耐热塑料片围绕泡沫垫子延伸并且通过弹性线固定到壳体以将部件保持在中空室内。

    Antitheft system with digitally coded signal
    3.
    发明授权
    Antitheft system with digitally coded signal 失效
    具有数字编码信号的防盗系统

    公开(公告)号:US4559529A

    公开(公告)日:1985-12-17

    申请号:US723551

    申请日:1985-04-15

    Abstract: A transmitter emits a pulsed radio signal and a digitally encoded radio signal near each exit of a protected premises. Monitored articles carry a receiver having a first circuit for receiving the pulsed signal, a power source, and a power switch for coupling the power source to a second circuit on detection of the pulsed signal. The second circuit receives the digitally encoded signal as multiple, serially-transmitted code bits. It also contains a clock for generating timing signals synchronized by the pulsed signal in order to distinguish a plurality of code bit intervals. A processor, an associated memory, and an address counter compare the digitally encoded signal with a stored bit pattern. On receiving an improper code bit, the processor causes the power switch to decouple the power source from the second circuit to conserve power. If the received signal matches the stored bit pattern, power is maintained to the second circuit. Alarm circuitry is triggered by overflow from the address counter. The address counter is reset each time the pulsed signal is received and thus produces no overflow, but when the article is removed from the protected premises, the address counter is allowed to overflow, triggering the alarm circuit.

    Abstract translation: 发射机在受保护场所的每个出口附近发射脉冲无线电信号和数字编码无线电信号。 监测物品携带具有用于接收脉冲信号的第一电路的接收器,电源和用于在检测到脉冲信号时将电源耦合到第二电路的电源开关。 第二电路接收数字编码的信号作为多个串行发送的码位。 它还包含用于产生由脉冲信号同步的定时信号的时钟,以区分多个码位间隔。 处理器,相关联的存储器和地址计数器将数字编码的信号与存储的位模式进行比较。 在接收到不正确的代码位时,处理器使电源开关将电源与第二电路分离以节省电力。 如果接收到的信号与存储的位模式匹配,则将功率保持到第二电路。 报警电路由地址计数器溢出触发。 地址计数器在每次接收到脉冲信号时复位,因此不产生溢出,但是当物品从受保护的场所移除时,地址计数器被允许溢出,触发报警电路。

    Bendable currency security dye pack
    4.
    发明授权
    Bendable currency security dye pack 失效
    弯曲货币安全染料包装

    公开(公告)号:US5196828A

    公开(公告)日:1993-03-23

    申请号:US820367

    申请日:1992-01-14

    CPC classification number: G08B13/149 G08B15/02

    Abstract: A security dye pack disguised as a bundle of currency for deterring robberies includes a housing formed from a stack of currency bills sewn together and having a hallow chamber formed therein. A substrate disposed within the chamber has a flexible central region through which electrical conductors extend for making electrical interconnections between opposing ends of the substrate. Electrical components are mounted on both sides of the flexible central region to generate an actuating signal upon detecting removal of the security dye pack from the protected premises. Canisters containing dye or other active chemicals are secured at opposing ends of the substrate to emit dyed or other active chemicals in opposing directions when expended. The flexible central region of the substrate allows the security dye pack to be bent into a U-shape. Batteries are arranged in a side-by-side relationship in an elongated narrow case to facilitate bending of the security dye pack.

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