课题中自己编写的使用Labview的VISA进行串行通信，实现液位控制的上位机，能实现液位报警和警示灯信息存储，示波器实时显示液位情况-The topics to write your own using Labview VISA serial communication level control of the host computer, to achieve the level alarm and warning light information is stored, the oscil