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传统用电信息采集系统主要采用低压电力线载波与GPRS无线公网通信方式,但目前的PLC产品受低压电力线载波的时变特性及噪声干扰,均无法提供可靠的通信,而GPRS方式在通信速率、稳定性、安全性、经济性等方面也有很大缺陷,因而无法保证数据抄收的准确性和完整性。无线传感网具有多跳、自组网特性;无源光网络具有高带宽、点到多点、灵活组网的特点,可满足智能用电采集系统的需求。最后提出采用无线传感网技术和无源光网络技术对通信系统进行改进,建设三级通信系统,改进的系统抄表成功率达到100%,系统性能得到提高。
However, the current PLC products are subject to the time-varying characteristics of low-voltage power line carrier and noise interference, are unable to provide reliable communication, and GPRS mode in the communication rate, Stability, security, economy, etc. also have great flaws, and therefore can not guarantee the accuracy and completeness of the data copied. Wireless sensor network with multi-hop, ad hoc network features; Passive optical network with high bandwidth, multipoint, flexible networking features to meet the needs of intelligent power collection system. At last, it proposes to improve the communication system by using wireless sensor network technology and passive optical network technology, and build a three-level communication system. The success rate of the improved system meter reading reaches 100%, and the system performance is improved.