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    • 7. 发明授权
    • Electronic security seal
    • 电子安全印章
    • US06265973B1
    • 2001-07-24
    • US09293135
    • 1999-04-16
    • Terrence N. BrammallCraig HamiltonDavid L. StevensonJeffrey WarnerStanley Gilbert
    • Terrence N. BrammallCraig HamiltonDavid L. StevensonJeffrey WarnerStanley Gilbert
    • G08B1314
    • B65D90/00B60R2025/1016B65D90/22B65D2203/10B65D2211/00G09F3/0317G09F3/0335Y10T70/459Y10T70/461
    • A molded transparent thermoplastic housing has a programmable transmitting circuit for transmitting seal identifying serial number, seal location, container identification and other data to a local receiver. A door in the housing permits access to the circuit for programming the seal indicia and related data for transmission. A contact arrangement forms a switch upon insertion of a locking bolt into a locking mechanism in the housing and applies battery power through the bolt to activate the data generating circuit. A conductor along the bolt shank is connected to the circuit provides a tamper evident signal to the circuit when the bolt is severed. The circuit senses the removal of the bolt or severed bolt condition for generating a “tamper” signal which is transmitted to a local receiver/reader. The conductor at the bolt may be a wire in a plastic tube surrounding the shank, a conductive layer over an insulation layer on the shank and over the conductive bolt head in ohmic contact with the head or a wire in a hollow metal tube. Severing the bolt severs the wire or the ohmic contact between the head and coating or between the head and the wire in the tube to indicate tampering. The seal periodically in random periods transmits the seal condition, whether normal or tampered. In an alternative embodiment, an interrogation unit may interrogate the seal which then transmits its locked or tampered states according to the locked or tampered condition of the bolt.
    • 模制的透明热塑性壳体具有可编程传输电路,用于将识别序列号,密封位置,容器识别和其他数据的密封件发送到本地接收器。 外壳中的门允许访问电路以编程密封标记和相关数据进行传输。 接触装置在将锁定螺栓插入壳体中的锁定机构中时形成开关,并且通过螺栓施加电池电力以启动数据产生电路。 当螺栓断开时,沿着螺栓柄的导体连接到电路,从而向电路提供防窃启信号。 电路检测到用于产生传输到本地接收器/读取器的“篡改”信号的螺栓或切断螺栓状态的移除。 螺栓处的导体可以是围绕柄的塑料管中的导线,在柄上的绝缘层上方的导电层,以及与头部欧姆接触或导电螺栓头中的金属管中的导线。 切断螺栓将导线或头部和涂层之间或头部和管中的导线之间的欧姆接触切断,以指示篡改。 随机周期性的密封传送密封条件,无论是正常还是篡改。 在替代实施例中,询问单元可以询问密封件,然后密封件根据螺栓的锁定或篡改状况传递其锁定或被篡改的状态。