李敏++刘颖++侯亚玲
摘 要: 系统以ARM LPC2378和无线射频模块为核心,分为上位机和下位机两部分。下位机作为数据采集模块,并连接执行装置和各类传感器,通过传感器采集农林环境数据,以一定时间间隔将各数据通过无线射频模块nRF905发送给上位机;上位机负责农林环境的监控,通过nRF905进行农林环境数据采集,并分析数据。当数据异常时,上位机发送执行信号给下位机,控制执行单元工作,从而改善农林环境,利于植物生长。整个系统实现了无线通信在数据采集及控制中的使用,传输距离较远,在生态环境监测领域具有广泛的应用。
关键词: nRF905; LPC2378; 智能农业系统; 农林环境; 上位机; 下位机
中图分类号: TN915.41?34 文献标识码: A 文章编号: 1004?373X(2014)19?0049?03
Design of intelligent agricultural system based on ARM and nRF905
LI Min, LIU Ying, HOU Ya?ling
(College of Information Engineering, Xian Eurasia University, Xian 710065, China)
Abstract: ARM LPC2378 and wireless radio frequency module are taken as the core of the system, and divided into two parts, master PC and slave PC. The slave PC is used as the data acquisition module and connected with the executive device and various sensors to collect agriculture and forestry environment data through sensors, and send each data to the master PC through radio frequency module nRF905 at a certain time interval. The master PC is responsible for agriculture and forestry environmental monitoring, execute agriculture and forestry environment data acquisition through the nRF905, and analyze data. When the data is unusual, the master PC sent an executive signal to the slave PC to control execution unit. The system can improve agriculture and forestry environment for the growth of plants. The system can realize the application of wireless communication in the data acquisition and control. Its transmission distance is far. It has widely application in the field of ecological environmental monitoring.
Keywords: nRF905; LPC2378; intelligent agricultural system; agriculture and forestry environment; master PC
0 引 言
我国是农业大国,作物收成及蔬菜等农作物的产量直接影响国民生活质量水平,亦关系到农产品价格[1]。作物生长过程中,温度及土壤湿度起着至关重要的作用。在苗木培育过程中,最值得考虑的问题就是,如何利用现代先进技术,改进农业的灌溉技术。合理的灌溉可以促进植物的健康生长,特别是对一些需水量特别大的植物。合理的灌溉,既可以促进植物的生长,增加苗木的产量,还可以节约日益紧缺的水资源。
随着物联网技术[2]的不断发展,越来越多的技术应用到农业生产中。目前,物联网技术逐步应用到了智慧农业建设中,提高了农业生产的管理效率,提升了农产品的附加值,加快了智慧农业的建设步伐。目前,利用RFID、无线数据通信等技术采集农业生产信息,以及时发现问题,准确地确定发生问题的位置,使农业生产自动化、智能化[3],并可实现远程控制,这是当前智慧农业的发展方向。……