基于北斗卫星与GPRS的土壤墒情监测系统
2021-09-05胡春杰杨溯陈智耿彬彬
胡春杰 杨溯 陈智 耿彬彬



摘 要:为了解决土壤墒情监测数据通信能力差的问题,设计了一种基于北斗卫星与GPRS的土壤墒情监测系统。利用基于TDR的土壤水分传感器采集墒情数据,并以规定报文格式通过北斗卫星与GPRS传输至控制中心,北斗卫星为主信道,GPRS为备信道,实现主、备信道自动切换功能,进行多信道多协议土壤墒情监测传输、显示、查询,为抗旱减灾提供技术支撑。
关键词:土壤墒情;北斗卫星;GPRS;监测系统
中图分类号:TP98 文献标志码:A
doi:10.3969/j.issn.1000-1379.2021.08.029
引用格式:胡春杰,杨溯,陈智,等.基于北斗卫星与GPRS的土壤墒情监测系统[J].人民黄河,2021,43(8):159-162.
Abstract: In order to solve the problem of poor communication ability of soil moisture monitoring data, a soil moisture monitoring system based on Beidou satellite and GPRS was designed. The TDR based soil moisture sensor was used to collect soil moisture data and transmit it to the control center through Beidou satellite and GPRS in the specified message format. Beidou satellite was the main channel and GPRS was the backup channel. The function of automatic switching between the main channel and the backup channel was realized. The multi-channel and multi protocol soil moisture monitoring transmission, display and query were carried out, which provided technical support for drought resistance and disaster reduction and has good promotion prospects.
Key words: soil moisture; Beidou satellite; GPRS; monitoring system
目前我国生态农业已经呈现出规模化、大型化、专业化的发展趋势。生态农业对环境的要求较高,快速准确地监测土壤水分含量及土壤温度等,是及时进行农田墒情分析,指导农作物节水灌溉,保障粮食安全等最重要的基础工作之一[1-2]。目前土壤体积含水量测量方法有称重烘干法、TDR测量法、FDR测量法、电容法等[3-4]。称重烘干法测定土壤含水量准确可靠,是其他方法的参考标准[5],但测定过程耗时费力,且取样破坏性强。随着计算机技术与通信技术迅速发展和完善,人工监测的方式逐渐被自动监测方式取代。TDR测量法能快速准确地智能自动化在线监测土壤含水量,被普遍认为是最有效的土壤墒情监测手段[6]。
王玖琳等[7]结合灌溉需求,提出了基于LoRa的节水灌溉系统设计,节约了通信成本;马本骥等[8]设计了基于ZigBee技术的农田土壤墒情监测……
