中文摘要：

提出了基于LEAcH（Lowenergyadaptiveclusteringhierarchy）协议的水产养殖溶解氧参数低功耗无线测量网络和溶解氧浓度的智能变频控制技术。无线传感网络中簇首对测量节点的数据先进行融合，然后发送到基站。针对水体溶解氧参数变化缓慢的特点，规定在每一帧内变化小于0．1mg／L时，不再向簇首发送数据。簇首调整各节点在该帧内数据发送时隙，延长簇首和节点的休眠时间，降低了功耗。PLc根据溶解氧参数的变化一方面通过变频器控制叶轮增氧机，在白天水体溶解氧质量浓度大于5．0mg／L时，叶轮增氧机低速“耕水”，充分利用自然界的风能、光能和藻类的光合作用改善水质；另一方面当溶解氧质量浓度低于5．0mg／L下限时，采用模糊变频控制迅速缩小误差，在接近控制目标后，变频器输出稳定。通过试验验证，相对于人工粗略控制，节约电能42．3％以上，产量提高11．8％，综合经济收益提高41．3％。

英文摘要：

Low-power wireless measurement network of dissolved oxygen concentration based an LEACH （Low energy adaptive clustering hierarchy）protocol and intelligent inverter control in aquaculture were introduced. In LEACH protocol, the measured data were fused by the cluster head and then sent to the base station. As the dissolved oxygen concentration changed slowly, it was set that when changes in dissolved oxygen concentration were less than 0. 1 rag/L, node was no longer send data to the cluster head in each frame. Simultaneously head node adjusted the transmission slot of each node in the frame. Sleep time of cluster head and node was extended and power consumption was reduced. When dissolved oxygen concentration was not less than 5.0 mg/L during the day, PLC controlled aerator automatically ＂farming water＂ at low speed through inverter. That fully took advantage of natural wind energy, solar energy and algae photosynthesis to improve water quality. When the dissolved oxygen concentration was less than 5.0 mg/L, fuzzy variable frequency control was used to reduce errors rapidly. When approaching the control target value, the inverter outputted stability to ensure the stable operation of the aerator motor. Statistics show that this control method saved more than 42.3% of the electricity, increased the production by 11.8% and increased the comprehensive economic gains by 41.3%.