基本功能
1、车辆通过相关射频卡片由系统进行读取记录。
2、手机通过wifi模块实时看到停车场状态（是否有空位）。
3、控制自动编程计费。自动生成计费结果，按年，月，日，卡号。
4、设计交互屏幕，有提醒空停车位和缴费情况。(basic function
1, the vehicle is read and recorded by the system through the related radio frequency cards.
2, the mobile phone uses the WiFi module to see the state of the parking lot in real time (whether there is a vacancy).
3, control automatic programming billing. Automatic generation of billing results, year, month, day, card number.
4, design interactive screen, there are remind empty parking space and pay the situation.)