Research And Design Of Car Parking Guidance System Based On Smart Phones

Parking lot is an important part of most people living in the city. A good parking lot leading system could benefits lives of people, which endows significant application value to the research of such a system. In recent years, the existing parking lot leading system could not satisfy the intellectualization and humanistic demand of modern people because of the significant boost of the possessions of private cars. The difficulties of finding a parking space, the complexity of parking and the low efficiency of parking lot management are usually encountered by drivers. The parking difficulties have been increasingly emerging in realistic lives which make the intelligent parking lot management the future trend of the parking management system.This dissertation combined the technique of Wi-Fi and Bluetooth with Android smart phones, proposed and implemented an intelligent parking lot leading system. This system provides the unified management of parking lot information, parking space searching and reservation and the function of route guide, etc. No other device is needed to be equipped to the car. Data interaction is realized using the Wi-Fi and Bluetooth technique.Firstly, based on the characteristics of Wi-Fi and Bluetooth technique and Android smart phone, the designing scheme of the leading system of the intelligent parking lot was proposed. The Wi-Fi and Bluetooth communication mechanism were constructed between the smart phone and the server to realize the data interaction between the client application and the parking lot server. The parking environment was simulated and the signal intensity of Wi-Fi was calculated, this is used at the parking lot entrance detection. The automatic connection between Wi-Fi or Bluetooth and the smart phone was realized to reduce the operation on the phone. With the use of Dijkstra shorted path algorithm, the shortest path leading function from the entrance to the parking space was implemented.Secondly, this dissertation designed and implemented the applications running on the server and client. On the client side, the application designed the registration/login module, the parking reservation module, the Baidu map leading module, entrance operation module and the workflow of the entrance operation and arrival operation module. The technique of realizing these functions were also given. On the server side, the application designed the workflow of the Socket server and the Bluetooth module and the realizing methods, the database of the parking lot information was designed in detail, the dynamic update of the client and the server was implemented. In addition, the data format of the communication protocol between the phone side and the server was designed which enable the resolution of the data.Finally, this dissertation performed an integration testing towards the intelligent parking leading system. Detailed test and analysis are conducted on user registration, login, parking reservation, entrance and exit of the parking lot. The test verified the practicability of the system.The devices which are needed to support the proposed parking leading system are all common equipments. These equipments are low-cost and have strong stability. In addition, the introduction of smart phones is reasonable for the life style of modern people, no other vehicle equipment is needed, which helps the system to be put into operation and reduce the cost of the parking system. The testing results indicate that this parking system has favorable stability and reliability. The system proposed and designed by this dissertation has the practical significance and actual value. This system would have rather vast application fields through further improvements.