摘要： 针对水产养殖中增氧机远程控制困难、水质送检繁琐等问题，基于无线传感器网络（WSN）及物联网技术，开发出一种带有水质监测功能的增氧机远程控制系统。该系统由监测设备和远程控制小程序组成，布设在现场的溶氧、pH传感器、环境监测变送器等设备由4G-DTU内置的微处理器负责数据采集，采用无线网络通信方式，摆脱传统监测系统通信距离短的困扰；小程序具备实时监测水质、查询历史数据、远程启停增氧机等功能。为验证系统实用性，在实际水域布置节点测试。结果显示：各项指标均达到要求，设备远程启停响应延迟低于100 ms, pH测量精度达到0.02,溶氧控制精度在±0.4 mg/L以内，温度测量精度达到0.5℃，气压测量精度达到0.1 kPa，能够满足水产养殖需求。证明了所研究的系统具有实际应用前景。

关键词: 增氧机, 无线传感器网络, 物联网, 水质监测

Abstract: Aiming at the problems of difficult remote control of oxygenator and cumbersome water quality delivery in aquaculture, a remote control system of oxygenator with water quality monitoring is developed based on WSN and IOT technology. The system consists of monitoring equipment and remote control applet. The dissolved oxygen, pH sensors, environmental monitoring transmitters and other equipment deployed in the field are collected by the microprocessor built in 4G-DTU, and the wireless network communication method is used to get rid of the short communication distance of the traditional monitoring system; the applet has the functions of real-time monitoring of water quality, querying historical data, remote start and stop of the oxygenator. In order to verify the practicality of the system, test nodes were arranged in the actual water, and the results showed that all the indicators met the requirements, the response delay of remote start/stop of the equipment was less than 100ms, the accuracy of pH measurement reached 0.02, the accuracy of dissolved oxygen control was within ±0.4mg/L, the accuracy of temperature measurement reached 0.5℃, and the accuracy of air pressure measurement reached 0.1kPa, which could meet the needs of aquaculture. It proves that the studied system has practical application prospects. 

Key words: aerator, wireless sensor network, Internet of Things, water quality monitoring