In order to achieve the goal of filtering tap water to safe drinking water automatically,a new type of multistage water purification control system is designed.The system is mainly composed of the filter structure,the control structure and the remote monitoring structure.The filter structure uses cascade of reverse osmosis membrane and ultra-filtration membrane to realize water purification.The control structure uses an AVR series micro-controller to realize auto-back washing of water purification,communication with MCGS touch screen by Modbus protocol and communication with WiFi module by self-designed protocol.The remote monitoring structure uses Eclipse development environment and WiFi communication technology to realize Android smartphone software by Java programming.Finally,the feasibility of the design is proved by the experiment,and the problems of auto-washing of water purification system and remote monitoring have been successfully solved,and the purification effect of water is good,which demonstrates the broad development prospect.%为实现自来水自动过滤为可饮用安全水,设计了一种新型的多级净水控制系统.该系统主要包括对过滤结构、控制结构和远程监控结构的设计,过滤结构采用反渗透膜和超滤膜级联的方式,实现了水的净化过程;控制结构采用C语言编程的AVR单片机,实现了净水系统的自动反冲洗、与MCGS触摸屏采用Modbus通信和与WiFi模块采用自设计通信协议通信等功能.远程监控结构采用Eclipse开发环境,WiFi通信技术,实现Java编程的Android手机软件.最后通过实验证明了该设计的可行性,并成功解决了净水系统自动反冲洗和远程监控的问题,对水质有很好的净化效果,具有广阔的发展前景.
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