Reseach And Application On Data Acquisition Of Wireless Sensor Network

The pace of technological development is getting faster and faster,and mankind has entered a new era of information.As the most important and basic information acquisition technology-sensor technology,has also been a great development.Wireless sensor network(WSN)that combine sensing,computing,and communications capabilities combine state of the art technology with sensor technology,embedded computing,distributed information processing,and communications technologies.With the continuous development of WSN technology,its nodes are widely used in environmental monitoring,medical care,safety monitoring,intelligent transportation,smart home and related military fields.On the one hand,due to the characteristics of wireless sensor networks such as large-scale,self-organization,reliability and dynamism,the system is required to be more stable,robust and secure.On the other hand,with the improvement of the performance of wireless sensor networks,the demand for power consumption is increasing.However,due to the limited power consumption of sensor nodes,how to take effective measures to reduce the energy consumption of WSN to prolong the working time Is a very crucial issue.Based on the project background of "Greenhouse Environment Monitoring System Platform of Smart Wireless Sensor Networks",this paper introduces the topology of wireless sensor networks in detail and deeply studies the basic applications of wireless sensor networks in energy consumption.First of all,based on the existing technology,the sensor model,processor chip and wireless transmitter chip performance comparison,mainly from the power,performance and other parameters of the comparison,taking into account cost,versatility and manufacturability and other factors,choose to meet the design Platform required chip.On the basis of these,a low-power WSN hardware platform is built,and in order to obtain better RF performance,this paper designs the node IFA micro-strip antenna according to the design principle of the micro-strip antenna,and uses the powerful CST simulation software to antenna According to the parameters of antenna Frequency,Efficiency,Gain,VSWR,S11,Impedance,Radiation Pattern and so on,the antenna with the best performance is selected from the 16 micro-strip antennas as the final antenna of the node.In the latter part of the production process,the actual production of the antenna placed in a dark room measured to verify the antenna performance to meet the design specifications.Finally,through the practical application of the environment of sampling experiments,comparative analysis,etc.,to get the final optimized node power consumption,lower than the pre-optimization power consumption of about 10% to 11%,to node low-power design requirements.At the end of the article,the author summarizes and looks forward to the next research direction and research focus.