基于GPRS技术的水质分析传感网络构建

Construction of GPSR-based sensor network for water quality analysis

基于分组无线业务(GPRS)技术特性,采用无线射频传感网络的搭建、面向对象的软件开发语言(JAVA)、安卓技术、光的散射原理以及光谱水质检测技术,开发了面向水环境的自动检测、分析系统,该系统主要实现对环境水浊度的检测。利用无线分组服务数据通信技术远程传输检测数据,并将检测软件嵌入到手机上,实现手机随时检测水浊度,全面提升了系统的自动化水平;利用功放技术,使射频范围扩大至2 000m,且实测丢包率小于0.5%;利用射频传感网络组网,实现2 000m半径范围共用一个GPRS网关连接互联网,一个组网下挂探头最多可达255个,成本减少40%,同时读取255个探头的实测网络耗时不超过5s。通过系统硬件与软件的设计,模拟实验结果表明,该系统可以实现可靠的远程管理和无线传感网络的高速率通讯。

Based on the features of GPRS adopting the wireless radio frequency sensor networks and the language of the object-oriented software(JAVA),android,the principle of light scatting and the technology of using spectrum to detect the water quality,a system is developed for water environment measurement,which can realize automatic detection and analysis.The most important function is the detection of water turbidity.Adopting GPRS to transmit remote detection data and embedding the detection software in the phone to detect the water turbidity whenever and wherever we are.This technology promotes the level of automation of the system comprehensively.The technology of power amplification is to expand the radio frequency range to 2000 meters and the measured packet loss rate is less than 0.5%.Radio frequency sensor network achieves sharing a GPRS gateway to connect Internet in the range of 2 000 meters radius.A network contains 255 probes.The cost is cut to 60% and the measured network time consumption is less than 5seconds when 255 probes are read at the same time.By the design of hardware and software,the simulation results show that the system can realize reliable remote control and high rate wireless sensor network communication.