DISA多信道恒温风速仪与PC机自动测量系统

本文介绍了ＤＩＳ多信道恒温风速仪与ＰＣ机联机组成的自动化测量系统，在研究了原仪器系统及通信格式后，采用国内较通用的ＰＣ机通过ＧＰＩＢ，与ＤＩＳＡ仪表接口建立了联机通信系统，文中介绍了面板信息到ＧＰＩＢ信息之间的通信过程、格式转换及一些特殊的约定，对仪器微处理器多位数据传输、硬件功能管理子程序的调试也作了说明。用户在ＧＰＩＢ软件包下，可以直接调用这些子程序。该系统建立后在西工大低湍流风洞实验中使用取得了很好的效果，也为今后用于其它目的测量带ＧＰＩＢ接口仪器并入打下了基础。

DISA MULTI-CHANNEL CONSTANT TEMPERATURE ANEMOMETER AND PC COMPUTER AUTOMATIC MEASUREMENT SYSTEM

This paper describes the automatical measurement system,which consists of DISA multi-channel constant temperature anemometer(CTA) and PC computer.Analysed instrument system and communication format,A data transmission system has been established by connecting computer with DISA instrument interface system via GPIB interface. The information transmission process format convertion, and some special arrangment between CTA and GPIB were illustrated,The multi-digit data transmission of micro-praccssor,and debug of subroutine for controlling the hardware function has been introduced.User can utilize these subroutines directly with the help of GPIB software package. By using this system during the test in Low-turbulence Wind Tunnel of NPU, good results were obtained.The basis for connecting with other instrument which has GPIB interface was set up.