Research On Distributed Networking And Control Technology Of LED Street Lamp

With the continuous expansion and improvement of urban construction process,urban lighting technology has also been rapid development,energy saving and environmental protection has become an important goal of urban street lighting.As far as the current technical conditions are concerned,the energy saving of street lamps can be achieved in two ways.One is to develop and replace energy-saving lamps,such as LED street lamps.The other is to improve the accuracy of street lamp control and ondemand lighting.Obviously,it is difficult to achieve the requirements of precise control for the lighting control of the traditional street lights which take the road section as the control object at present.Therefore,a lighting control system with single lamp as the control object is gradually entering people's vision.For the lighting control system with single lamp as the control object,single lamp interconnection is the basis to realize the control,while ZigBee wireless networking technology has gradually entered the field of street lamp control by virtue of its low networking cost and convenient implementation and deployment.However,the distribution of street lights in road lighting is different from the node distribution in mesh network.How to select the convergence node of field network according to the actual working conditions becomes an urgent problem.In addition,the lighting effect of the road network based on single lamp control is the effect of multi lamp cooperation.How to improve the control efficiency of regional single lamp cooperation can not only meet different lighting needs,but also further improve the energy-saving effect and prolong the service life of single lamp.Therefore,according to the actual needs of enterprise products,this paper studies the selection method of aggregation node and the single lamp cooperative control technology of street lamp field network based on ZigBee mode.The main research work is as follows:First of all,the node deployment characteristics of streetlights,based on the hierarchical clustering method to realize the division of network segments and the selection of convergence node(centralized controller)location in the process of streetlights field networking.Through the clustering analysis of street lamp data,the definition of network distance based on environment,the capacity of street lamp centralized controller and the consideration of street lamp based on road distribution are added,and the street lamp clustering algorithm based on road network is introduced to realize.The experimental results show that the selection effect of the centralized controller can meet the actual engineering requirements.Secondly,according to the characteristics of street lamp lighting,a single lamp control technology based on regional cooperation is introduced.Firstly,a single lamp fuzzy controller is designed based on the information of environmental illumination and traffic flow.On this basis,through the regional illumination collaborative analysis of the collection node(centralized controller),the distributed collaborative control is provided for each single lamp controller.Matlab numerical simulation and experimental data analysis show that the street lamp control system based on collaborative control technology can adjust the output power of LED street lamp in real time according to the information of environmental illumination and vehicle flow,so as to achieve the effective energy saving of street lamp.At the same time,in solving the problem of single lamp aging,the use of LED photoelectric thermal life model can extend the service life of street lamp without affecting the road illumination Life.Finally,on the basis of the above work,the overall architecture of LED street light control system is given,and the system implementation is carried out.The test results show that the system can effectively improve the accuracy of the location of the convergence node of the streetlight centralized controller in the stage of streetlight deployment,reduce the labor cost,in addition,improve the energy-saving effect of streetlight,delay the aging of streetlight and other issues,improve the service life of streetlight,and have a good application prospect in the streetlight lighting industry.