扩频采样判决输出智能电能抄表技术研究

摘要

The existing meter reading mode in China is mainly based on manual meter reading, and it is developing to the four-in-one remote automatic meter reading and on-line metering.In this paper, a smart energy reading technique based on spread spectrum sampling decision is proposed.The physical mode and mathematic model of the meter reading system channel are established.Then the meter reading system is analyzed by direct sequence spread spectrum communication, and the final decision output is sampled.Finally, the article compared with other communication methods.The result shows that the research is well adapted to the remote data collection and transmission, which ensures the reliability, feasibility and accuracy of remote meter reading.Therefore, this study has theoretical significance and practical value for the development of four-in-one remote automatic meter reading and on-line measurement technology.%国内现有抄表模式主要以人工抄表为主,目前正向四表合一远程自动抄表在线计量模式发展.文中提出了一种扩频采样判决输出的智能电能远程集中抄表通信技术,首先给出了远程抄表系统架构,建立了抄表系统信道物理模态与数学模型,并对抄表系统进行了抄表直接序列扩频通信仿真,接着实现了采样判决输出,并在干扰及衰减的前提下对信源和信宿进行了分析,最后与其它几种通信方式进行了对比.结果表明,本研究很好地适应了远程集抄数据通信传输,保证了电能远程抄表的可靠性、可行性和准确性.对今后四表合一远程自动抄表以及在线计量技术的深入研究有一定的理论意义和实用价值.