Research And Design Of Intelligent Parking System Based On Low Energy Consumption Technology

With the rapid growth of national vehicle ownership,parking problems and parking management are becoming more and more serious.The use of information technology to improve the utilization of parking spaces and parking management efficiency is an effective way to alleviate the parking problem,research on "Internet plus parking" in 2015 the domestic rapid warming,introduced a variety of intelligent parking system.Firstly,this paper studies the parking situation at home and abroad,analyzes the existing parking system.It is found that the current parking system is difficult to be used in public parking spaces such as community,roadside,square and so on.In order to solve the core part of the intelligent parking system of public parking spaces,low energy parking level control is adopted.Using new detection technology,parking lock control technology,wireless sensor network technology,solar charging technology and power management technology,the parking space detection module,parking lock control module,wireless sensor network module and power control management module with additional solar charge are designed to solve the intelligent parking of public parking space.Three problems: parking detection and automatic control,low energy wireless signal transmission,high efficiency power management,effectively improve the performance of intelligent parking system and reduce energy consumption.Then the four modules of the parking space controller are designed,and the vehicle location detection module designs the HMC5883 L three axis magnetic field sensor vehicle detection circuit and the adaptive threshold detection algorithm(ADTA).Parking lock H bridge motor drive circuit,photoelectric sensor monitoring and parking lock switch program design.The low energy wireless sensor network uses SX1278 series LoRa chip and STM32F103RCT6 controller to design sensor node circuit,and uses dynamic switching MCU pin and efficient algorithm to reduce the power consumption of wireless sensor network.In order tomake maximum use of the solar energy in the environment and prolong the battery life,the power control management module designed the DCDC conversion circuit and the MPPT control algorithm for the solar maximum power point tracking(MPPT),designed the dynamic power path management circuit and the power management control software for solar panels,lithium batteries,and load.The circuit system carries out the dynamic power supply path management.Finally,the performance and power consumption of the intelligent parking system are tested to ensure the feasibility of the system.It has great application value for public parking location to realize resource sharing and intelligent management.