多线程车辆检测器模拟程序（多线程串口发送）可设置模拟车辆速度（最大车速和最小车速）及车流量 注意：只有计算机有串口存在才能运行-Multithreading vehicle detector simulation program (multi-threaded serial port) can be set to simulate vehicle speed (maximum speed and minimum speed) and traffic volume Note: there is