Study On The Farmland Data Acquisition System Based On ZigBee

With the continuous development and application of Wireless Sensor Network technology,it could be seen more and more wireless technologies have been applied to every aspect of human's production active and life.Building a wireless sensor network for the agricultural field is a prerequisite for realizing the development of modern and fine agriculture.It is also one of the key development directions of agricultural networking.At present,the traditional farmland environmental data records are done by human labor,which requires the staff to carry out field measurements and record data.With the development of computer technology and embedded technology,RS485 or CAN bus and other wired connections are applied to collect and transmit data.It solves the problem of high cost in collecting data.However,in this method,it is difficult to arrange the wires and it increases the complexity of farmland.Therefore,a farmland data acquisition system based on ZigBee wireless technology is proposed in this paper considering that the wire transmission mode is often influenced by the terrain and installation environment.The research mainly studies are as follows:(1)With analyzing the current situation of wireless sensor network technology,ZigBee technology is chosen for the core to wireless sensor network construction.And we also put forward a design scheme of wireless data acquisition system.(2)Use Altium Designer software to draw the PCB circuit board system hardware design,CC2530 chip and sensor modules to connect.(3)The router and the coordinator and the end adopt the semi-open source Z-Stack protocol stack to carry on the program development,so that the field of environmental data collection,transmission and reception.(4)The host computer based on the Visio Studio platform,uses the C#for software development,together with the ACCESS database,commonly implemented data on the local preservation and diachronic data query.(5)Test the communication distance of the system,the accuracy of the collected data and the life time.After that,it is shown that the system has an effective transmission distance of 40m in the case of an obstacle,the average relative error of the collected data is 9.76%,and the effective life time is 3 months.The system can detect the environmental situation of the farmland within the required time,complete the data collection,transmission,reception and local storage of the environment,provide the data reference for the influence of the environment on the growth of the crop,reduce the amount of work and the intensity of work in collecting data from the fine agriculture and provide reliable data support for the development of agricultural networking.This system satisfies the design demand and has a promising prospect in application.