泄漏同轴电缆在周界报警装置中的应用

利用泄漏同轴电缆的特性设计了一种可以对指定区域进行监视的装置，它适用于对大范围或地形复杂的区域进行周界防范.该种周界报警装置是将感应电缆埋地安装，利用其电磁场形成一堵无形的围墙，随时警戒区域的周界变化.采用泄漏同轴电缆作为感应器件，分析、设计了一种应用泄漏同轴电缆的周界报警装置.介绍了泄漏同轴电缆的工作原理；利用场论公式推导和计算了电缆参数；搭建了报警装置的实验电路，当有人通过泄漏同轴电缆时可以检测到信号的变化.同时，验证了泄漏同轴电缆应用于周界防越报警的可行性.

Application of leakage coaxial cable in perimeter annunciator

To satisfy the requirement for the secure problem in the public establishment such as the bank,a kind of security device,which can be used to keep away for the large or complex perimeter field,was(designed) using the characteristic of coaxial cable.The sensor is embedded under the ground, and the(electromagnetic) field forms a hidden wall,to guard the perimeter field.Using leaky coaxial cable as the(sensor,) a perimeter annunciator.was designed.The working principle of the leaky coaxial cable is(introduced.) Using the field theory to deduce and account the parameter of the cable,the experimental(circuit) of the security device was built,which can detect the signal change when somebody goes through the cabel.Possibility that the leaky coaxial cable is applied for the perfimeter annunciator has been validated.