The Researching On Hardware Design Of Parking Guidance System In Intelligent Parking Lot

With the rapid development of China's national economy,the number of cars owned by individuals and families is increasing,and road congestion,parking difficulties and other travel pain points are becoming increasingly significant.At present,At present,the parking system installed in the parking lot only shows the number of empty parking spaces,and the manual guidance leads to low parking efficiency,which may even mislead the driver in parking and further reduce the utilization of resources.Because most of the researches of intelligent guidance system which focus on the outside part of the parking lot to help drivers,it cannot meet the parking lot inside demand.Therefore,this paper is devoted to designing a set of intelligent parking induction hardware system,which can optimize the detection of the parking spaces numbers,with displaying at the same time for the parking interior guidance.It can make the driver choose the parking lot nearby,solve the problem of management and service after the vehicle enters the parking lot,making the drivers find the parking space conveniently and so as to improve the efficiency of the parking lot.This system is divided into four parts: parking detection module for collecting information,input module for transmitting information,main control module for completing data analysis,and display and guidance module for realizing requirements.It can realize three core functions of detecting the use of parking spaces,displaying the number of free parking spaces and guiding the parking with a guide sign.It designs the main control module and input module of the parking induction system based on the ATmega16 single-chip microcomputer as the core central controller and CD4051 input multichannel signal.SJA1000 is used as an independent CAN controller to realize effective information transfer between the main controller module,sensor and LED electronic display screen.The parking detection module USES ultrasonic signal source emitted by ultrasonic parking detector to monitor whether there are vehicles in the parking space.And the parking display board is constructed based on LED lights,and the number of free parking Spaces is displayed with LED digital tube outside the parking lot.Besides,guide signs are set at each intersection in the parking lot to guide drivers to the area with empty parking spaces.In this work,it takes the module which contains 16 parking spaces as the object and simulates the hardware system,whose results show that this system can successfully realize the detection,display and guidance functions,achieving the expected purpose.