低压电力集抄上行通信信号盲区解决方案研究

Research on eliminating uplink communications blind area in low-voltage meter reading system

为解决用电信息采集设备因安装在移动信号盲区,而导致GPRS/CDMA模块通信无法上线的问题,文中介绍了一种基于宽带载波通信技术的无线信号中继器设备——宽带电力线载波无线信号中继器。宽带电力线载波无线信号中继器由数据转换单元、本地单元和远程单元组成,本地单元与远程单元间通过宽带电力线载波通信技术进行通信。在使用原有终端与GPRS/CDMA远程通信模块的条件下,加装宽带电力线载波无线信号中继器,可使信号不良区域的终端实现与主站实时数据交互。通过试验测试表明,宽带电力线载波无线信号中继器具有良好的通信实时性和可靠性,能够较好地满足低压电力集抄系统上行通信对于通信技术的需求。

The power information collection equipments which would be installed in mobile signal blind area, wherethe GPRS/CDMA communication modules are off-line, in such a situation, the communication will fail. In order toresolve this problem, after analyzing the advantages and disadvantages of the existing solutions, this paper introducesa new solution which is based on wideband cartier communication technology, called broadband carrier wireless signalrepeater. This repeater is composed by a master node, a slave node and data conversion unit. The master node alwayslocates at good signal areas, while the slave node is installed in the data concentrator, and they can communicationwith each other through the broadband cartier. Experiments show that broadband carrier wireless signal repeater has agood performance on real-time communication and reliability, which can meet the demand of intelligent electricity con-sumption and electricity information acquisition system.