| The rapid development and large-scale application of the Internet of Things technology have brought tremendous convenience to the upgrading of many traditional industries.The Internet of Things which used in agriculture is a typical case of combining the Internet of Things technology with the primary industry.With the help of Internet of Things technology,the production income of cash crops has increased substantially.Among many cash crops,blueberry has gradually accepted by the market and widely planted.However,due to the late start of large-scale planting and the high requirements of the environment and production technology during the process,the following problems exist in the existing process.First the inaccurate improvement and control of soil minerals and water and fertilizer in the artificial planting experience easily lead to low conversion and utilization of various nutrients by blueberries,resulting in waste of resources.Second the non-realtime feedback monitoring system is unable to deal with emergencies,resulting in untimely handling of emergencies in the production and planting process,resulting in economic losses.The Internet of Things technology and the soil characteristics of the experimental base are adapted.This paper studies and designs a blueberry production monitoring system which includes three parts: blueberry mineral nutrition absorption model,multi-sensor-based blueberry production information collection equipment,and remote server monitoring software.The specific work of the paper is as follows.1.The nutrient absorption model of different blueberry varieties on soil minerals was established.This article uses principal component analysis model.Based on the soil mineral data collected from the experimental plot and the leaf mineral data of different blueberry varieties,the model was established.A comprehensive evaluation model of blueberry absorption of mineral nutrients in soil is obtained.With reference to actual planting data,the evaluation results obtained by this evaluation method are consistent with the actual situation.The model provides intentional guidance for soil improvement in the early stage of blueberry planting.At the same time,based on the blueberry mineral nutrition model and relying on remote server resources,the blueberry mineral nutrition monitoring system is designed.2.Design and implement monitoring system of blueberry planting production based on Internet of things technology.This article selects the corresponding environmental sensor module according to the needs of the growing process.At the same time,the system which equipped with STM32F103ZET6 single chip microcomputer realize environmental monitoring,continuous power supply and data transmission of blueberry planting and production links.On the basis of the underlying hardware,this paper has completed the design of remote server monitoring software.The remote service monitoring module implements data transmission and storage,and uses information transmission to achieve real-time warning.The system solves the problem of online real-time monitoring of the blueberry planting production environment.3.Based on the design of the hardware and software system,the assembly test of the hardware system and the test of the server software are completed.The hardware system has undergone a comparative test experiment with standard monitoring equipment,and the results show that the soil temperature and humidity,soil p H,air temperature and humidity,and light sensors all meet the experimental requirements.At the same time,the monitoring system of this paper and the other two existing monitoring systems are used for fuzzy comprehensive evaluation on the basis of user needs.The evaluation result is that the recommendation degree of the monitoring system in this paper is0.86408,which is the most recommended system among the three.It is designed to meet user needs.Through the construction of the above-mentioned principal component analysis model,the establishment of the Internet of Things system and the actual test,this paper realizes the solution to maximize the absorption of mineral nutrients during the planting and production process,as well as the real-time monitoring of the production environment.This article provides a deliberate attempt for the efficient production and cultivation of blueberry. |