AMI通信网络中微功率无线通信的性能测试技术及系统研究

微功率无线通信是高级量测体系(AMI)的主要通信方式之一。各厂家的通信模块性能不一，测试技术尚未形成统一的规范。设计了微功率无线通信的测试系统，由射频性能测试系统和协议一致性分析系统组成。系统采用屏蔽测试箱、多功能电磁波小室、综合测试分析仪、误码分析仪、标准协议信号源等模块组成，屏蔽箱对800MHz频率以下的无线电信号有超过70dB 的抑制，可以提供相对纯净的无线电暗室环境，减少外界无线电波的干扰。测试频率范围为30MHz~1GHz，提供66个测试频点，测试频率误差小于2ppm，误码测试精度小于0.001%，功率测试精度（闭环）为5%（0.2dB）。实现了在实验室情况下对微功率无线网络性能的全面测试和评估，具备很好可操作性、便利性和可复现性。

The Research for Micro-power Wireless Communication Performance Testing Technology and System of AMI Communication Network

Micro-power wireless communication is one of the main communication mode in Advanced Metering Infrastructure (AMI). Communication module performance of each manufacturer is different, and the Detection techniques of Communication performance are not standardized. Micro-power wireless communication testing system is designed, and it consists of the RF performance of test system and protocol consistency analysis system. System consists of shielding test box, multi-function chamber of electromagnetic wave, digital-analog integration, portable communication analyzer, standard protocol signal source and so on. Function and shielding box below 800 MHz for radio signals inhibition of more than 70 dB, can provide relatively pure radio dark room environment, reduce the external interference radio waves. The GFSK modulation method is used in testing system, and test frequency range is 30MHz~1GHz, test frequency error is less than 2ppm, error test precision is less than 0.001%, the power test precision (closed loop) is to 5% ( 0.2 dB). Micro-power wireless network performance comprehensive testing and evaluation is achieved in laboratory conditions, and it has the advantages of good maneuverability, convenience and reproducibility.