Design Of Parking Space Reservation Based On WeChat Applet

With the development of network technology,our life is more information-based and more convenient.On the one hand,various kinds of software appear in mobile phones,while WeChat app is still popular.With the continuous update of WeChat,its functions are also constantly improved.The emergence of small programs saves the use of some complex apps.It can be said that most functions can be realized by small programs.On the other hand,people's demand for cars is growing day by day,and the number of cars is increasing,which leads to unreasonable occupation of parking space resources and inconvenience for people's parking.Aiming at the problems of unreasonable use of parking space resources,parking difficulties and parking space finding difficulties,this paper presents a new parking space reservation scheme combining WeChat small program and Internet of things technology,which not only saves the driver's time,but also improves the parking efficiency.In view of the unreasonable use of parking space resources,this paper designs a parking space reservation system,which is mainly composed of WeChat applet,Internet of things server and parking space lock.The main functions of the app are: users log in via WeChat,search for destinations and reserve parking spaces,etc.In the function of parking space reservation,this design uses the movie online seat selection function in the applet for reference,and adds this function to it.Users can directly find the reserved parking space through their own needs;this paper builds MQTT Internet of things server based on Tencent cloud,and configures relevant applications in the cloud server,such as building database to manage user information using My SQL in the server.The small program and the Internet of things server travel and interact through MQTT protocol,which is mainly used for the communication between the small program and the parking lock;in the aspect of parking lock,STM32F103 chip with Cortex-M3 core is selected as the controller,which can not only meet the performance requirements,but also provide support for the subsequent development.In order to realize data transmission between parking lock and Internet of things server,sim868 Internet of things module with GPRS / GPS function is selected;In this paper,the reservation system is tested in part and the positioning algorithm is simulated.The test results show that the functions of user login,parking lock use and video monitoring are practical and can complete the reservation of parking space.The simulation results show that the improved method has small positioning error and improves the positioning accuracy.