摘要
针对现有PLC通信系统可靠性、稳定性难以满足实际应用需求的问题,文章基于工作在150 k Hz^12 MHz频段范围内、根据信道认知信息选择可通信频段并定义相应通信参数的跨频带认知PLC技术,在FPGA+ARM硬件架构基础上研发了跨频带认知PLC系统,其包括耦合电路、模拟前端、数字前端、物理层处理单元、MAC/汇聚层处理单元等5个部分。所研制的跨频带认知PLC系统在多个中低压配电网进行了现场测试,测试结果表明所研制的设备均能够通过频率认知技术找到一个可通信频带,保证系统可靠通信。
Most existing PLC systems can＇t meet the robustness and stability requirements of real applications. This paper develops a cross-band cognitive PLC system using FPGA-plus-ARM hardware architecture based on the PLC technology which learns the channel condition in the frequency range from 150 k Hz to 12 MHz and defines the communication parameters according to the cognition information. The developed cross-band cognitive PLC system comprises coupler circuit, analogue front end, digital front end, physical layer process unit and MAC/Convergence layer process unit. The system has been tested in multiple medium/low distribution networks. Test results show that the cross-band cognitive technology is able to find a frequency band for PLC system with reliable communication.
出处
《电力信息与通信技术》
2016年第11期57-61,共5页
Electric Power Information and Communication Technology
基金
国家电网公司科技项目"跨频带认知电力线载波通信(PLC)技术实用化研发及应用"
