The system collects real-time vehicle information of all parking spaces in the carpark through the wireless ultrasonic parking space detector installed on the top of every parking lot.When the parking lot is occupied by vehicles,the wireless ultrasonic parking space detector will collect the status inforamtion and immediately transmit the message to the wireless node controller connected to it via RF signal.

Then the wireless node controller will gather the information and make the data compression codidng according to some rules then send the feedback to the wireless central controller through wireless transmission.

Wireless central controller completes the data processing then sends the processed parking space data to every LED guide screen in the carpark via wireless zone controller to display the information of available parking space,realizing the function of guiding the vehicles to enter the available parking space.

The system also sends the data to the computer.The computer saves the data in the database server.Users can inquire the real-time parking space information of the carport and the statistic data of the year,month,data of the yard through the computer terminal.