【摘要】 针对低压配电网复杂、干扰严重、不利于高频信号传输等特点,采用正交频分复用、时分复用以及IDFT/DFT对信号进行调制解调。考虑抄表系统内部各点之间不能完全实现直接通信,且通信线路具有较大的时变特性,提出了基于蚁群算法的动态自适应路由(DAR)进行组网和丢失节点智能搜索。集中抄表系统引入了ARM嵌入式系统和Linux操作系统平台。实测结果验证了该系统应用于低压配电网的正确性及可行性,采用低压电力载波集中抄表将成为自动抄表行业发展趋势。更多还原

【Abstract】 Aiming at the features of low-voltage power distribution network,i.e.,complicate,serious interference,and unfavorable to high frequency signal transmission,the technologies of orthogonal frequency division multiplexing,time division multiplexing and IDFT/DFT are used to modulate and demodulate the signals.In considering direct communication among internal points of meter reading system can not be completed,and the communication lines features large time varying,the dynamic adaptive routing(DAR) based on ant algorithm is proposed to structure the network and search the lost nodes intelligently.The ARM embedded system and Linux operating system platform are introduced in the concentrative meter reading system.The results of measurement demonstrate the correctness and feasibility of the usage of the system and indicate the strategy will become the developing trend of automatic meter reading industry.更多还原