屏蔽环境对讲通信覆盖范围拓展应用研究

Expanding coverage of talkback com communication in shielding environment

提出了一种快速、有效解决高大建筑物形成的重度屏蔽环境内的对讲机通信信号覆盖的解决方案.该方案使用中继台作为移动无线中继子系统,实现对讲机信号的放大,最终达到延伸覆盖距离的目的.仿真结果表明:在负一层接入中转台后,两级级联的无线中继子系统可将对讲机的通信距离有效延伸至地下二、三层.测试结果表明,除个别点外,仿真结果和测试数据吻合得很好.本文研究实现了无需现场工程施工、快速部署、便捷使用、扩展覆盖的目标,为电力维护通信提供了有效的保证.

In this paper, a solution is proposed to quickly and effectively solve the problems of com- munication signal coverage of the interphone in the severely shielded environment formed by the tall build- ings. The relay station is integrated with the portable accumulator to act as the mobile wireless relay sub- system, so as to realize the signal amplification of the interphone and ultimately achieve the goal of exten- ding coverage range. The experimental result shows that when transfer station is accessed in B-1 floor, the results simulated by using ray tracing are in good agreement with the test data except few points, there- fore, the communication distance of the interphone can be effectively extended to B-2 and B-3 floor by the two-stage cascaded wireless relay subsystem. The test result show that the goal of convenient application of rapid deployment can be achieved without the help of the on-site engineering construction, thus can provid an effective guarantee for the power maintenance and communication.