基于組態(tài)軟件與DDE技術(shù)的流量計(jì)校準(zhǔn)系統(tǒng)研制
摘 要：在分析流量標(biāo)定裝置的標(biāo)定原理與結(jié)構(gòu)基礎(chǔ)上，將標(biāo)準(zhǔn)表法和標(biāo)準(zhǔn)體積法綜合在一套流量校準(zhǔn)裝置中，擴(kuò)大了應(yīng)用范圍，提高了檢定效率。完成恒壓供水系統(tǒng)、數(shù)據(jù)采集、標(biāo)準(zhǔn)流量計(jì)及控制執(zhí)行等電路的配置，建立系統(tǒng)的數(shù)學(xué)模型，進(jìn)行Matlab仿真分析，采用組態(tài)王軟件開發(fā)流量計(jì)檢定系統(tǒng)，運(yùn)用DDE技術(shù)完成了Matlab與組態(tài)間的動(dòng)態(tài)數(shù)據(jù)交換，通過編程實(shí)現(xiàn)流量裝置和流量計(jì)的檢定、數(shù)據(jù)存儲(chǔ)以及歷史數(shù)據(jù)報(bào)表等功能，較好地實(shí)現(xiàn)在線實(shí)流校準(zhǔn)的仿真。實(shí)驗(yàn)調(diào)試表明：流量計(jì)校準(zhǔn)裝置的準(zhǔn)確度為0.3，能較好地實(shí)現(xiàn)流量校準(zhǔn)系統(tǒng)的控制、數(shù)據(jù)采集、處理分析的自動(dòng)化。
關(guān)鍵詞：流量標(biāo)定；組態(tài)王；Matlab軟件；DDE技術(shù)
中圖分類號(hào)：TH814；TP272；TP311.52；TM930.12 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：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
