Design of Parking Guidance and Reverse Car-Searching System based on Barcode

The paper proposes to mark parking spaces and parked positions with Barcode, and designs the Barcode command set and specifies its data format. Then, graph theory is applied to optimal path planning, and approaches of directed and undirected graph are used in parking guidance and reverse car-searching, respectively. Finally, the design scheme of the WeChat applet on smart phone is proposed and verified with examples. According to the system design scheme, the smart phone is used to scan the parking lot entrance code to obtain the parking route, and to scan the car-searching code to obtain the reverse car-searching route, which meets the needs of parking guidance and reverse car-searching. The solution in the paper is very low cost and easy to deploy. It is suitable for various underground and outdoor parking lots, which is conducive to reducing the vehicle turnover rate and is easy to operate in combination with the current parking lot payment system.