Research On Guidance System For Intelligent Parking Lot Which Is Based On Internet

This paper presents the intelligent parking lot parking guidance system through a PC-side panorama so that the owner of the parking lot can obtain real-time parking information at a glance.A route preparing for driver will be planned on the mobile phone from the parking lot entrance to the target parking spaces.Voice prompts the driver to move forward and provide the driver the distance to drive.The system solves the problem of finding spare parking when driver go into the large parking lot.It saves driver time to park and increases economic benefits,improving parking efficiency and parking management level.This article has developed a set of intelligent parking lot guidance system.The system first uses the magnetic flux sensor to solve the problem of the parking information strategy,then designs and implements two key hardware devices with the communication function of the parking information hub and the parking information concentrator,and finally designs the software submitting parking data of the parking lot from the parking lot server to the WEB server.Parking information hubs use a new kind of microcontrollers as the core,and can be connected with 14 magnetoresistive sensors.When the driver parks the car above the magnetoresistive sensor,or the car goes through it,the magntic field above the sensor will be disturbed.Then the magnetic flux will be also changed.The system determine whether there is a car or not,according to magntic field disturbance to achieve the vehicle detection above the parking spaces.When the sensor buried under the land detects the vehicle,the parking information hub will send the vehicle location coordinates data to make the driver know the positioning of the vehicle.Parking information aggregator use a model for the ARM chip named LPC2132 and a kind of embedded software.According to the wireless communication protocol,it can realize collection,summary and submission of the parking flux information and location coordinates.Software submitting data to WEB server has three modules,namely communication through serial port,dynamic display of vehicle on parking spaces,data submission in the way of POST.The communication through serial port realizes the reception of the parking data by creating the serialport class.The dynamic display of vehicle images on parking spaces despond on the data from parking lot.Data submission in the way of POST in HTTP protocol can submit the data from parking lot to WEB server.After repeated parking test,in the 4G network and the Internet environment,it verifies the detection function of vehicle on parking space and vehicle guidance function in the aisle.The results show that the system completed the test of 30 parking spaces in the parking lot with a very short period and the time of each parking position detection is short.The result is the truth with a high accuracy and good reliability.The sensor is responsive and data transmission is smooth during the vehicle is being guided.From the parking information hub to APP in the mobile terminal,the delay created by transmission of coordinate data within 1 second and real-time is better.