通过labview实现停车收费系统，包括串口的选取、读取收费卡号，初始化钱包，进行充值，扣钱，显示余额等功能。(Through LabVIEW, the parking charge system is realized, including the selection of serial port, reading charge card number, initialization of wallet, recharge, deduction, display of balance and other functions.)