Design Of Intelligent Power Supply For Public Bicycle Rental System

Aiming at the problems existing in the power supply of the traditional public bicycle rental system,this paper designs an intelligent power supply based on photovoltaic energy storage technology.Photovoltaic power generation system,the use of renewable resources,solar energy,so that the public bicycle rental system is no longer consumed energy,can save a lot of energy,in line with the requirements of environmental protection and energy saving green.The voltage is increased to 21.6V to 27.6V between two batteries in series.Then the voltage is stabilized in 12V by synchronous rectification BUCK circuit.Synchronous rectification BUCK circuit has the characteristics of low loss and high efficiency.The power comes with GPRS wireless communication module and the 485 interface for remote control and monitoring,real-time maintenance,so as to realize intelligent management.This paper mainly introduces the development history and development of the public bicycle system in our country.This paper analyzes the problems existing in the power supply of the public bicycle rental system and the significance of the research of the intelligent power supply,the principle of the photovoltaic power generation,the principle of the charging and discharging of the battery,the topological structure and the working principle of the synchronous rectification BUCK circuit.At the same time,the control strategy of intelligent power supply is simulated and analyzed.Including battery charge and discharge strategy,MPPT control strategy,synchronous rectification BUCK circuit control strategy.According to the theory and control strategy,the design of intelligent power supply system.It mainly includes the design of hardware system and software system.The hardware system design includes the CPU scheme,the controller power supply unit,the photovoltaic charging control unit,the battery power supply unit,the communication unit,the liquid crystal display unit,and other circuits.Intelligent power supply software design includes the main program,photovoltaic charging control subroutine,synchronous rectification control discharge procedures,voltage,current sampling control subroutine,buttons,display control subroutine.The corresponding experiments are carried out on the experimental platform.Finally,the test results are analyzed.