Application Design Of Internet Of Things Technology In Parking Guidance System

With the continuous improvement of the economic level,China's car ownership is growing rapidly,parking problem is becoming more and more serious,parking guidance system came into being.But at present most of the parking lots have the problem of low efficiency of management,low utilization rate of parking spaces,poor safety and large energy consumption,so it increases the traffic jams,atmospheric pollution,becomes a big obstacle to improve people's quality of life,so it is so necessary to design a set of intelligent parking guidance system to satisfy a variety of parking demand of people.In the Internet of things environment,TMS320F28335 embedded module and CC2530 wireless communication module are adopted In this thesis as the hardware basis of the system,and combines multiple sensors to build a set of wireless sensor network.(1)Hardware design: the system mainly completes the design of parking information acquisition circuit,collision information acquisition circuit,ZigBee communication circuit,power circuit and other functional modules.Ultrasonic sensor HC-SR04 is adopted to realize real-time collection of parking information.The sound sensor TT16 and TLV320AIC23 B chip are used to collect and process the vehicle collision information at the parking space.(2)Software design part,this subject has completed the design of each functional module program,including the central control module main program,parking information collection subprogram,path planning algorithm subprogram,vehicle collision detection algorithm subprogram,database management subprogram and upper computer management subprogram design.(3)By analyzing the current mature shortest path algorithm,a weight-based Dijkstra path planning algorithm is put forward.The algorithm first obtains the optimal parking space by combining the driving time,walking time and the occupation of parking Spaces on both sides,and then plans the optimal driving route by combining the factors such as the length of the road section and the traffic quality in the parking lot,so as to reduce the user's parking time and achieve the expected design goal.Through the system parking information acquisition module,LED guide screen module test and path planning,vehicle collision detection simulation experiment.The results show that the system can realize dynamic collection of parking information,shortest path planning,parking guidance and collision detection.The system function accords with the expected design goal,and has high research value and broad application prospect.There are 48 figures,13 tables and 61 references in this thesis.