喷管管内流动参数的嵌入式智能测试系统  

Embedded Measurement System of Flow Parameters for Jet Nozzles

作　　者：单春贤[1] 夏云铧[1] 房德康[1] 

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2002年第2期50-54,共5页Journal of Jiangsu University：Natural Science Edition

摘　　要：在原喷管试验台的基础上 ,引入嵌入式微控制器控制的实时智能测量系统 ,以AT89C5 2单片微控制器为主控芯片 ,集成了压力 (负压、差压 )、流量、温度、位移等高精度测量模块 ,增加了探针位移的自动调节和闭环控制 ,提高了测量精度和位移控制精度 测试结果表明 :该系统测试精度高、离散度小 ,不但能满足喷管管内流动参数实时、高精度测量的要求 ,有助于管内流动过程热力学状态参数基本变化规律的研究 ,也能应用于需要进行压力、温度。On the basis of original nozzle test stands, this paper presents the application of the intelligent real time measurement system controlled by the embedded microcontroller, takes the AT89C52 single-chip microcontroller as the main control chip, integrates the high precise module of measuring pressure (negative pressure, differential pressure), flow capacity, temperature displacement, etc., adds the self regulation and close loop control of probe displacement and raises the accuracy of measurement and displacement control. The results show: the system is high in accuracy, little in divergency. Not only can it meet the demands of high precision measurement, but it is also applicable to the actual measurement of pressure, temperature, flow capacity, etc.

关 键 词：喷管 试验台 微控制器 嵌入式智能测试系统 管内流动参数 

分 类 号：U173.9[交通运输工程] TK123[动力工程及工程热物理—工程热物理]