Design And Implementation Of Large Parking Lot Reverse Search System Based On The Mobile Terminal

With the rapid development of modern economy,the level of people's lives has increased rapidly.The number of private cars has been increasing sharply.Some people even have more than one car at home.As a result,large numbers of parking lots have been built to meet the needs of the users.Whereas,a new problem occurs with the expansion of parking lot in cities – it's not easy to find your car in a large parking lot because of the large parking area and the huge number of stopped cars.So,when the car owners return to take the cars,they will feel lost.As a consequence,they just blindly search for their cars by memory.In order to solve this problem,the reserve parking system of parking lot has been springing up as the times require.As the market demand continues to increase,the development potential of such products is also rising,and the commercial prospects and market value is constantly expanding.Parking lot is a key supporting facility in all public places.High quality service can bring an image of convenience and efficiency for the shopping mall.Aimed at the problem above,in this subject we choose WIFI positioning technology based on the research and development of reverse parking system which is used in large parking lots.The system uses mobile Internet technology,and the smart phone is used as a platform for users to find their cars.Infrared monitoring technology and computer vision technology are needed to recognize license plates and then to gain vehicle information.We use WIFI to locate the AP source with appropriate density and calculate and establish the WIFI intensity field.At the same time,we combine LANDMARC algorithm and trilateral localization to locate the users' position,coupling with WIFI strength field to correct errors,then to improve the WIFI positioning accuracy.We can also combine the license plate recognition and WEB server to accomplish the data exchange between the server and users by using APACHE+PHP+MYSQL server environment to achieve car navigation.Finally,in this system we add the function of the Augmented Reality Technology to provide users with a more convenient and intuitive way to find cars.I fully involved in the design of the large parking lot car reserve seeking system and implementation.Specific work can be summarized as follows:Firstly,I analyze the requirement of the system,and above all I design and complete the core modules of the system: license plate recognition technology based on computer vision;high-precision user location based on WIFI intensity field;construction of server environment based on APACHE+PHP+MYSQL;Augmented Reality Technology.The system mentioned in this article can help the owners to find the car quickly and conveniently in all kinds of large parking lots and optimize the users experience of the traditional parking management system to make the service more intelligent.In addition,with the mature of the system application and the needs of users,we can also add the approach navigation,indoor navigation,appearance navigation,parking billing,remote monitoring of vehicles and other functions to make the system more satisfactory.