新建VI（test1\serial_communication.vi），运用仪器I/O\串口\VISA配置、读取、关闭、字节数、清空缓冲
等函数，编制测距传感器的串口通讯接口VI；通过波形图表显示连续读取的测距-时间曲线，并将有效测量范 围外的数据滤除。(New VI (test1\serial_communication.vi), using the instrument I/O\, serial port, \VISA configuration, read, close, bytes, empty buffer
The serial communication interface VI of the distance measuring sensor is compiled, and the time distance curve of the continuous reading is displayed by the waveform chart, and the data outside the valid measuring range is filtered out.)