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实用新型
CN206849205U 一种安全门禁 有权

一种安全门禁
摘要：
本实用新型公开了一种安全门禁，括天线支架、安装于天线支架内的有源电感天线环路和与天线支架的下端固定连接的底座，底座内设置有检测电路，有源电感天线环路和检测电路电连接，有源电感天线环路包括：第一有源电感天线环路，其形成双“8”天线回路；第二有源电感天线环路，其形成单8”天线回路；第三有源电感天线环路，其形成单“0”天线回路。本实用新型增加了第三有源电感天线环路，其中第三有源电感天线环形成单“0”天线回路，单“0”天线回路具有收发能力强的特点，可以弥补第一有源电感天线环路、第二有源电感天线环路的缺点，进而可以降低对环境噪声的影响系统，提高监测效果。(ESM)同样的发明创造已同日申请发明专利
摘要（英）：

The utility model discloses a safe entrance guard, draw together the antenna boom, install in the antenna boom active inductance antenna loop and with the lower extreme fixed connection's of antenna boom base, be provided with detection circuitry in the base, active inductance antenna loop and detection circuitry electricity are connected, active inductance antenna loop includes: first active inductance antenna loop, it forms two " 8 " antenna return circuits, the active inductance antenna loop of second, it forms single 8 " the antenna return circuit, the active inductance antenna loop of third, it forms single " 0 " antenna return circuit. The utility model discloses increased the active inductance antenna loop of third, the active inductance antenna of third annular cheng dan " 0 " antenna return circuit wherein, single " 0 " antenna return circuit have the characteristics that receiving and dispatching can the reinforce, can remedy the shortcoming of first active inductance antennaloop, the active inductance antenna loop of second, and then can reduce the impact systems to ambient noise, improve monitor effect.

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