基于組態軟件與DDE技術的流量計校準系統研制
摘 要：在分析流量標定裝置的標定原理與結構基礎上，將標準表法和標準體積法綜合在一套流量校準裝置中，擴大了應用范圍，提高了檢定效率。完成恒壓供水系統、數據采集、標準流量計及控制執行等電路的配置，建立系統的數學模型，進行Matlab仿真分析，采用組態王軟件開發流量計檢定系統，運用DDE技術完成了Matlab與組態間的動態數據交換，通過編程實現流量裝置和流量計的檢定、數據存儲以及歷史數據報表等功能，較好地實現在線實流校準的仿真。實驗調試表明：流量計校準裝置的準確度為0.3，能較好地實現流量校準系統的控制、數據采集、處理分析的自動化。
關鍵詞：流量標定；組態王；Matlab軟件；DDE技術
中圖分類號：TH814；TP272；TP311.52；TM930.12 文獻標志碼：A 文章編號：1674-5124（2013）05-0065-03
Design of flow meter calibration system based on configuration
software and DDE technology
HU Kai-ming， LI Yue-zhong， ZHAO Yong-ke
（College of Mechanical and Electronics Engineering，East China Institute of Technology，
Fuzhou 344000，China）
Abstract: The methods of master meter and standard table are integrated in a flow standard device after analyzing the principle and structure of the flow calibration standard device， which can expand application range and improve detection efficiency. The system has the functions of constant pressure water supply and data acquisition. And it is also equipped with the hardware circuits of the standard flow meter， the actuator， etc. The mathematical model is established， and Matlab simulation analysis is carried out. Flow meter calibration system is developed with the Kingview software. The dynamic data exchange between Matlab and configuration is realized with DDE technology. The functions of calibration， data storage， history data report， etc. are realized for the flow device and the flowmeter through programming. The method is a good way for on-line real-calibration simulation. Experimental results show that the accuracy of the flowmeter calibration device is 0.3， and it can preferably reach to the automation of control， data acquisition， processing and analysis.
Key words: flow calibration； Kingview； Matlab； DDE technology
