Design And Implementation Of Intelligent Light Pole System Based On Photovoltaic MPPT Algorithm

As one of the urban infrastructure,street light has gradually become the best carrier for building a smart city due to its large number and wide distribution.Smart light poles with multiple functions have become the focus of social attention.In view of the fact that traditional street lamps cannot uniformly manage the intelligent devices on the lamp pole,this paper proposes a design scheme of intelligent lamp pole system based on photovoltaic MPPT algorithm.The system is mainly divided into two parts,one is the photovoltaic power generation system,and the other is the intelligent terminal control system.(1)The photovoltaic power generation system.This design uses Photovoltaicelectric supply complementary mode as the power input of the system,when the electric supply is cut off,the intelligent equipment on the lamp pole will be "paralyzed".Aiming at this disadvantage,the solar panel is used as the backup power supply of the system in this design.First of all,this paper analyzes the principle of photovoltaic panels,establishes a mathematical model,and describes that under partial shading conditions,the output curve of photovoltaic modules has multiple peak points and is nonlinear;Then the traditional constant voltage method,disturbance observation method and conductance increment method are analyzed theoretically,and the advantages and disadvantages of each method are described;Finally,the principle of Maximum Power Point Tracking(MPPT),the basic principle of Particle Swarm Optimization(PSO)and its implementation steps are introduced.Through simulation and comparative testing,the experimental results show that PSO has good convergence and stability compared with traditional disturbance observation method under dynamic lighting environment;And when the solar panel is partially shaded,the particle swarm optimization algorithm can quickly find the actual maximum power point,which improves the power generation efficiency of the system.(2)The other is the intelligent terminal control system.The terminal control system is mainly aimed at improving the problems that the traditional street lamp system cannot be remotely monitored,automatically patrolled,independently controlled by the street lamp,and fault location.The hardware and software are studied and designed.In the hardware design,the GD32F407VET6 microcontroller is used as the main control chip to connect a variety of sensors,so that realize the collection of the external environment of street lamps;Design multiple interfaces to deal with different communication equipment;A variety of power interfaces are provided to meet the power demand of different equipment on the pole.In terms of software design,it communicates with the platform through TCP/IP protocol to achieve the purpose of remote monitoring;It is equipped with the Web Server function to modify the network parameters of the terminal controller online;The TFTP protocol is used to remotely upgrade the terminal controller to achieve the program update of all lamp pole controllers in the LAN.Through experimental verification,the designed controller can monitor the operating environment of the light pole in real time,control the equipment on the light pole remotely,locate accurate fault location accurately,the system has high reliability and stable data transmission.