【作者】 丁飞；

【导师】 张西良；

【作者基本信息】 江苏大学 ， 机械设计及理论， 2006， 硕士

【摘要】 随着国民经济的迅速发展，现代农业得到了长足的进步，温室工程已成为高效农业的一个重要组成部分。针对现代温室的生产和发展需要，提出了采用无线分布式监控以解决原有有线系统的局限性。通过对比研究了无线技术、计算机外设接口、基于固定分配的信道接入技术和后台监控软件的基础上，开发了以终端节点、主控制器节点和主控PC机构成的温室环境分布式监控系统。终端节点完成温室现场环境信息的采集与处理，并通过无线信道传送给主控制器节点，主控制器节点通过USB接口与主控PC机进行通信，采用力控组态软件设计了实时监控平台，从而实现温室环境的无线分布式监控。本文主要从终端节点、主控制器节点和后台力控组态监控软件三个方面阐述了系统的实现原理。终端节点和主控制器节点选用内嵌8051无线SoC芯片nRF9E5作为主控制芯片，分别进行了模块化的软硬件设计。终端节点硬件包括DS18B20接口电路、HM1500接口电路和太阳能充电电路；软件包括无线收发程序、DS18B20接口程序和HM1500接口程序。主控制器节点硬件包括EDM1079应用电路、USB130接口电路和电源模块电路；软件包括EDM1079应用程序和USB130接口程序。针对无线通信受外界影响较大，误码率较高，主控制器节点和终端节点之间采用的是支持动态多点接入的高抗干扰的跳频技术，并且开发出有效的点对多点协议。后台力控组态监控软件的功能主要包括：数据的采集和存储、图形显示和人机对话、实时数据库存储和ODBC数据库管理等。本课题开发的这套温室环境无线分布式监控系统经过在镇江市京口区瑞京农业科技示范园试运行，效果良好，终端节点和主控制器节点在80m的范围内无线通信状况良好，并且可以实现温室环境信息实时监控，数据采集，数据管理等多项功能。本系统具有良好的通用性、可扩展性，是对我国当前温室监控系统产品开发的一次有益尝试，具有较好的应用推广价值。更多还原

【Abstract】 Along with the rapid development of the national economy, the modern agriculture has got substantial progresses and greenhouse engineering has become an important part of efficient agriculture. To meet needs for production and development of modern greenhouse, the system of wireless distributed monitoring is present to overcome the limit of the traditional wired system in greenhouse. Through comparing wireless technologies, computer exterior interfaces, channel access technologies and monitoring software, a plan based on terminal nodes, master controller and computer is proposed. The terminal nodes collect local information, transmit to the master controller node and send them to computer through USB interfaces finally. Adopting ForceControl configuration software to achieve real-time monitoring, thus wireless distributed monitoring of the greenhouse can be realized.In the thesis, we introduce the operation principle in terms of terminal nodes, master controller node and monitoring software. nRF9E5 is used as the main control chip of the terminal nodes and master controller node, and the module of hardware and software are designed respectively. The hardware of terminal nodes includes DS18B20, HM1500 and Solar power circuit. The software of terminal nodes consists of three programme for wireless RX/TX, DS18B20 and HM1500. The hardware of master controller node is composed of EDM1079, USB130 and power supply module. The software of master controller node includes applied programme for EDM1079 and USB130. To solve high bit error rate in the wireless communication, the frequency hopping technology is used and a effective point to multi-point protocol is also developed. The functions of monitoring software include data acquisition and manage, graph display, person-machine dialogue, real-time database storage and ODBC database management.Applied in a agricultural zone of technology and science in Zhenjiang, the system shows better performances. Terminal nodes and master controller node can communicate well when distance is less than 80 meters. It also has several functions including real-time monitoring, data acquisition, data management and so on. With excellent generalization and scalability, the system will be populized in the future.更多还原