The Research Of Intelligent Parking Lot Management System

With the economic development and rise in the living standards and change in the consumption concept, the vehicle population has a great growth, so car parking has become more and more difficult in many cities. However, the problems of low intelligent level, poor management level and low operation efficiency exist in the present parking lot management. In order to solve these problems, the research of intelligent parking lot management is presented in this paper.Firstly, according to the function requirement analysis, the overall design principle of the system is determined. Choosing RF card for the management medium, adopting wireless sense network based on ZigBee agreement for the communication network of the system, the overall structure of the parking lot management system is designed and the procedure of entering and exiting the parking lot for the fixed users and temporary users is introduced in detail.Secondly, a parking lot structure model is established. With view to the shortest parking path problem, the principle of the best parking space is determined and the parking lot path network is abstracted to the issue of the graph theory. Therefore, the actual problem is converted into the shortest path problem in graph theory. Comparing the advantages and disadvantages of several algorithm, dijkstra's algorithm is selected for the car parking induction algorithm. Choosing a parking space for example, the dijkstra's algorithm principle is presented in detail. In order to solve the actual problem, a little change for dijkstra's algorithm is maken in the paper. Through the programming simulation, the corresponding shortest path of each parking space is solved.Thirdly, combined with the parking lot structural model, the parking guidance subsystem is designed for overall. Comparing the advantages and disadvantages of several vehicle detection methods, the magnetic method is selected for vehicle detection in the entrance and exit of the parking lot and the ultrasonic method is selected for parking space detection. The magnetic detecting node in the entrance and exit of the parking lot, the ultrasonic detecting node in the parking space and the guiding node are designed. The guide information displayed in the LED screen of the guiding node can bring much more convenience for drivers.Forthly, lighting control system is also a subsystem of the intelligent management system. Combined with the parking lot structural model, lighting control subsystem is designed for overall. Through the planed lighting control strategy, it can realize intelligent control of each lighting circuit.Finally, the requirement analysis of the management system software function is elaborated.The work procedure of management operators is introduced and a part of the management system software function is shown.