面向智慧农业的分层土壤墒情监测仪的设计及应用

doi:10.11959/j.issn.2096-3750.2020.00188

物联网学报 ›› 2020, Vol. 4 ›› Issue (4): 43-50.doi: 10.11959/j.issn.2096-3750.2020.00188

面向智慧农业的分层土壤墒情监测仪的设计及应用

赵小强^1,²,权恒^1,²(),晏珠峰¹,王录俊³

¹ 西安邮电大学通信与信息工程学院，陕西西安 710121
² 陕西省信息通信网络及安全重点实验室，陕西西安 710121
³ 陕西省渭南市临渭区葡萄研究所，陕西渭南 714000

修回日期:2020-04-08 出版日期:2020-12-30 发布日期:2020-12-14
作者简介:赵小强（1977- ），男，陕西西安人，博士，西安邮电大学教授，主要研究方向为物联网技术及应用|权恒（1994- ），男，陕西宝鸡人，西安邮电大学硕士生，主要研究方向为物联网技术及应用、智慧农业|晏珠峰（1995- ），男，陕西西安人，西安邮电大学硕士生，主要研究方向为物联网技术及应用、智慧农业|王录俊（1968- ），男，陕西渭南人，陕西省渭南市临渭区葡萄研究所高级农艺师，主要研究方向为葡萄栽培及新品种选育
基金资助:
陕西省创新人才推进计划——科技创新团队(2019TD-28);西安市科技计划项目(201806117YF05NC13-2);陕西省教育厅产业化培育项目(18JF029);陕西省国际科技合作计划项目(2018KW-025)

Design and application of the layered soil moisture monitor for the smart agriculture

Xiaoqiang ZHAO^1,²,Heng QUAN^1,²(),Zhufeng YAN¹,Lujun WANG³

¹ School of Communications and Information Engineering,Xi’an University of Posts and Telecommunications,Xi’an 710121,China
² Shaanxi Key Laboratory of Information Communication Network and Security,Xi’an 710121,China
³ Institute of Grapevine Research of Linwei,Weinan 714000,China

Revised:2020-04-08 Online:2020-12-30 Published:2020-12-14
Supported by:
The Shaanxi Province Innovative Talent Promotion Plan-Science and Technology Innovation Team(2019TD-28);The Science and Technology Projects of Xi’an(201806117YF05NC13-2);The Industrialization Cultivation Project of Shaanxi Provincial Department of Education(18JF029);The Shaanxi Province International Science and Technology Cooperation Project(2018KW-025)

摘要/Abstract

摘要：

随着我国智慧农业的高速发展，土壤墒情监测变得尤为重要，但当下的监测方式大多存在设备布设安装困难、电极干扰、监测深度单一等问题。设计了一种适用于农田的土壤墒情监测仪，对于硬件结构，采用管式非接触的设计方案，完成了多个模块的设计，可实现分层非接触监测。对于软件协议，提出一种基于Modbus协议的多节点访问控制策略，该策略具有轮询效率高、数据稳定、监测节点广等特点。通过消息队列遥测传输（MQTT,message queuing telemetry transport）协议将数据传输至云服务器进行农业分析决策。在葡萄园区的测试表明，监测仪能实现范围为0～100%、精度为±2.45%的墒情监测，具有一定的稳定性和实用性。

关键词: 智慧农业, 土壤墒情监测, 分层非接触, Modbus协议, MQTT协议

Abstract:

With the rapid development of the smart agriculture in China,the soil moisture monitoring has become particularly important.But there exist many problems in current monitoring methods,such as difficulties in layout and installation,electrode interference,and single monitoring depth.A soil moisture monitor suitable for the farmland was designed.For the hardware structure,a tube-type non-contact design scheme was adopted,and multiple modules were designed in order to realize the layered non-contact monitoring.For the software protocol,a control strategy of the multi-node access based on the Modbus protocol was proposed,which had the characteristics of high polling efficiency,data stability,and wide monitoring nodes.The data was transmitted to the cloud server through the message queuing telemetry transport (MQTT) protocol for the agricultural analysis and decision-making.The test in the vineyard area shows that the monitor can monitor the moisture content in the range of 0~100% and accuracy of ± 2.45%,which is of certain stability and practicality.

Key words: smart agriculture, soil moisture monitoring, layered non-contact, Modbus protocol, MQTT protocol

中图分类号:

TP212.9

赵小强,权恒,晏珠峰,王录俊. 面向智慧农业的分层土壤墒情监测仪的设计及应用[J]. 物联网学报, 2020, 4(4): 43-50.

Xiaoqiang ZHAO,Heng QUAN,Zhufeng YAN,Lujun WANG. Design and application of the layered soil moisture monitor for the smart agriculture[J]. Chinese Journal on Internet of Things, 2020, 4(4): 43-50.

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参考文献 14

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所测物质	相对介电常数	所测物质	相对介电常数
水	80	花岗岩	7～9
空气	1	干沙土	2.5
乙醇	20～25	玄武岩	12
甲醇	37	瓷器	5～7
丙三醇	47	盐	4

测量方式（与人工烘干法相比）		土表下10 cm处	土表下20 cm处	土表下30 cm处	土表下40 cm处	平均相对误差
插针式传感器	均方差	2.98	2.68	2.94	2.84	3.33%
	相对误差	3.8%	3.1%	3.5%	2.9%
土壤墒情监测仪	均方差	1.40	2.34	2.43	2.54	2.45%
	相对误差	1.7%	2.6%	2.9%	2.6%

面向智慧农业的分层土壤墒情监测仪的设计及应用

Design and application of the layered soil moisture monitor for the smart agriculture

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