A monitoring system of ventilator based on LabWindows/CVI is proposed. The emphasis is put on the study of method to realize serial communication in LabWindows/CVI. And the way of calling ActiveX control with CVI is researched.

• 介绍了基于LabW indows/CVI的风机监测系统软件的开发,重点研究了CVI环境下串行口通信的实现,以及利用ActiveX技术调用服务器程序的设计方法。