Construction Of Late Frost Damage Monitoring System For Winter Wheat In Henan Province Based On Internet Of Things

With the continuous development of Internet of Things' technology,it has been widely used in all fields.In the field of agriculture,the Internet of Things' technology uses wireless sensor equipment to dynamically monitor various indicators of crops.Thus it can effectively obtain monitoring results of diseases and pests,abnormal weather events and crop growth,and has become an important means of the crop management in the field.Especially in the field crop production,the field crop disaster monitoring and diagnosis technology based on the Internet of Things has gradually become a research hotspot.In this paper,five major winter wheat producing areas of Henan province,i.e.,Shangqiu,Nanyang,Zhumadian,Xuchang and Anyang are as the research objects.The Internet monitoring stations deployed in the five areas are used to collect temperature data of winter wheat field.According to the data recorded of each station from 2011 to 2017,the regreening stage of winter wheat in each area was accurately determined,and the jointing stage of winter wheat was accurately calculated according to the accumulated temperature model in each region.In this paper by using on Java Web technology,the Late Frost Damage Monitoring System for Winter Wheat in Henan Province Based on Internet of Things was designed and implemented on the basis of the theoretical basis of the judgment index,the accumulated temperature model and the late frost damage index of the regreening stage and the jointing stage.The system has the characteristics of convenient use and rich functions,which can effectively determine the regreening stage and jointing stage of winter wheat,monitor the late frost damage and its level of winter wheat,and provide targeted expert advice.The main research contents and results of this paper are as follows:(1)Using the Internet of Things monitoring stations deployed in Shangqiu,Nanyang,Zhumadian,Anyang and Xuchang,the improved five day sliding average method was adopted to determine the date of winter wheat regreening stage.Based on the accumulative temperature models for each region,the specific date for the jointing stage of winter wheat was deduced from the regreening stage.(2)Based on the indicators of judging regreening stage and jointing stage,accumulated temperature model and frost damage index,this paper used Java EE technology platform and SSH2 lightweight system development framework to develop a three-tier architecture based the Late Frost Damage Monitoring System for Winter Wheat in Henan Province Based on Internet of Things.The system used Mysql as a database and used Tomcat middleware as a Web container,which is convenient to deploy,user-friendly,and easy to use.The functions of the system are rich,including: real-time temperature acquisition in winter wheat fields,regreening stage and jointing stage determination,winter late frost damage monitoring,expert advice management and user management.(3)Using the historical data of the Internet of Things monitoring stations from 2011 to 2017,this paper determines that the average difference between the regreening stage of Shangqiu,Nanyang,Zhumadian,Anyang and Xuchang and the actual regreening stage of the same year is 3 days.The average difference between the jointing stage and the actual jointing stage of the same year is 3 days,which show a better obtained result.Based on the verification method of the regreening stage and the jointing stage,the accumulated temperature model and the winter wheat late frost damage index,the Late Frost Damage Monitoring System for Winter Wheat in Henan Province Based on Internet of Things was designed and developed in Henan province.The system can timely monitor the occurrence of late frost damage and the corresponding frost damage of winter wheat in the 5 regions of Shangqiu,Nanyang,Zhumadian,Anyang and Xuchang,and provide strong technical support for winter wheat production.