Design And Research Of Indoor Smart Parking System Based On Narrow Band Internet Of Things

In today's society,the economy is developing at a rapid pace,people's quality of life has been improved,and the number of urban cars has also increased.The parking problem has become a stumbling block to the development of major cities.At the same time,it also caused a series of problems such as traffic congestion,resource waste,and environmental pollution.Therefore,it is urgent to design a complete,efficient and reliable urban intelligent parking system to solve the above problems.We researched on indoor intelligent parking system based on the Narrow-Band Internet of Things(NB-Io T)technology in this paper,designed an intelligent lock,and researched intelligent parking guidance technology.Firstly,we analyzed the background and significance of this topic,studied the research status of smart parking at home and abroad,and pointed out a series of problems such as parking with difficulty in the current intelligent parking system,which leads to the research content of this topic and the work arrangement of the thesis.Secondly,we studied and designed the intelligent parking system as a whole.Firstly,the functional requirements of the intelligent parking system are analyzed,and the functions that the intelligent parking system needs to implement are determined.Then the overall design of the intelligent parking system is given,including the design of the intelligent parking system and the development process of the entire system.Finally,the detailed research and analysis of the NB-Io T technology used in this paper is carried out,including the advantages of NB-Io T technology,network architecture and data transmission process.Thirdly,we present the design and implementation of intelligent ground lock,including hardware design and software implementation.Firstly,the overall design of intelligent ground lock is given,and the functions that need to be realized by intelligent lock are analyzed.The design framework of the intelligent lock is given.Then we have modularized detailed design and implementation of intelligent ground lock,including the selection and design of control module,communication modules,sensor modules and motor drive module.Finally,we give the software implementation of the intelligent ground lock.Including data reporting and command delivery,a method for automatic parking space authentication based on NB-Io T technology and bluetooth communication technology is proposed,which effectively solves the problem that NB-Io T technology is not sensitive to delay,at the same time,combined with the geomagnetic and ultrasonic sensors,the program design of intelligent ground lock closure is given.Finally,we have studied the intelligent parking guidance technology.Firstly,the design scheme of the parking space guidance system is given.The database design of the parking guidance system and the display design of the guiding module are given.Then the intelligent parking space guidance algorithm is studied,including the establishment of the indoor parking lot environment model.Based on the traditional distance-based Dijkstra algorithm and A* algorithm,a time-based Dijkstra algorithm is proposed,and the time-based Dijkstra algorithm is optimized.Finally,the environment model of the user's reserved parking space is given,and the model is used to simulate the distance-based Dijkstra algorithm and the time-based Dijkstra optimization algorithm.The simulation results show that the time-based Dijkstra optimization algorithm is slightly farther than the distance-based Dijkstra algorithm,but the driving time is significantly reduced,and then the A* algorithm was simulated and the shortest path from the intersection node to the reserved parking space was obtained.