本文選題：通風機 + 虛擬儀器　； 參考：《西安科技大學》2017年碩士論文

【摘要】：通風機作為礦井生產(chǎn)的關(guān)鍵設(shè)備,其性能和工作狀態(tài)直接關(guān)系到工作人員的人身安全、設(shè)備運行的經(jīng)濟性和礦山安全生產(chǎn)。利用虛擬儀器技術(shù)對通風機主要性能參數(shù)進行檢測,補償測試環(huán)節(jié)產(chǎn)生的誤差,對保證通風機檢測的準確性和有效性具有重要意義。論文根據(jù)煤礦在用通風機安全檢測檢驗規(guī)范,采用虛擬儀器技術(shù)研制了基于USB總線的礦井通風機檢測虛擬儀器。論文對礦井通風機檢測的主要參數(shù)進行了研究分析,確定了包括對風量、風壓、溫度、濕度、功率等主要參數(shù)的測量方法和測點布置。根據(jù)煤礦生產(chǎn)現(xiàn)場環(huán)境要求,綜合對比分析不同結(jié)構(gòu)虛擬儀器的特點,確定了基于USB總線的硬件方案,完成了相應(yīng)傳感器和數(shù)據(jù)采集卡的選型,設(shè)計了儀器所需要的調(diào)理電路。以LabVIEW為開發(fā)平臺,采用模塊化的設(shè)計方法開發(fā)了通風機性能檢測虛擬儀器軟件,實現(xiàn)對通風機主要性能參數(shù)的檢測。論文對所設(shè)計的礦井通風機檢測虛擬儀器的硬件和軟件進行了誤差分析。結(jié)合所選傳感器的工作原理和特性參數(shù),分析了壓力、溫度、濕度和功率等傳感器誤差產(chǎn)生原因和類型。調(diào)理電路主要根據(jù)傳感器輸出信號的類型和采集卡輸入信號類型完成必要的信號I/V變換、光電隔離和濾波處理,針對所設(shè)計的調(diào)理電路的原理,分析了信號在變換和濾波過程中誤差產(chǎn)生的原因。根據(jù)NI-USB6221數(shù)據(jù)采集卡基本組成和性能指標,分析了采集卡誤差產(chǎn)生的原因。論文采用實驗的方法,通過給定標準量對所設(shè)計的虛擬儀器的靜壓、全壓、溫度、濕度、大氣壓力以及功率通道進行測試,得到儀器各通道的測量數(shù)據(jù)。對測量數(shù)據(jù)與給定標準量進行對比分析和誤差計算,采用不同的擬合算法得到測量值和給定標準量的函數(shù)關(guān)系,通過對比不同擬合算法的相關(guān)系數(shù)和標準差,確定以相關(guān)系數(shù)最大、標準差最小擬合效果最佳的函數(shù)作為該通道的誤差補償函數(shù),并以此函數(shù)對該通道測量數(shù)據(jù)進行修正。
[Abstract]:As the key equipment in mine production, the performance and working state of ventilator are directly related to the safety of personnel, the economy of equipment operation and the safety of mine production. It is of great significance to use virtual instrument technology to detect the main performance parameters of ventilator and to compensate the error caused by the test link to ensure the accuracy and effectiveness of fan detection. According to the safety inspection standard of mine ventilator in use, the virtual instrument based on USB bus is developed in this paper. In this paper, the main parameters of mine ventilator are studied and analyzed, and the measuring methods and measuring points are determined, including the main parameters of air volume, air pressure, temperature, humidity, power and so on. According to the requirements of coal mine production field environment, the characteristics of different structure virtual instruments are compared and analyzed, the hardware scheme based on USB bus is determined, the selection of corresponding sensors and data acquisition cards is completed, and the conditioning circuit of the instrument is designed. The virtual instrument software for fan performance testing is developed based on LabVIEW and modular design method. The main performance parameters of ventilator are tested. The hardware and software of the virtual instrument for mine fan detection are analyzed in this paper. Combined with the working principle and characteristic parameters of the selected sensor, the causes and types of sensor errors such as pressure, temperature, humidity and power are analyzed. The conditioning circuit mainly completes the necessary signal I / V transform, photoelectric isolation and filter processing according to the type of the sensor output signal and the input signal type of the acquisition card, aiming at the principle of the designed conditioning circuit. The causes of the errors in the process of signal transformation and filtering are analyzed. According to the basic composition and performance index of NI-USB6221 data acquisition card, the causes of the error of data acquisition card are analyzed. In this paper, the static pressure, total pressure, temperature, humidity, atmospheric pressure and power channel of the designed virtual instrument are measured by the method of experiment, and the measured data of each channel of the instrument are obtained. The correlation coefficient and standard deviation of different fitting algorithms are obtained by comparing the measured data with the given standard quantity and calculating the error, using different fitting algorithms to obtain the functional relationship between the measured value and the given standard quantity. The function with the largest correlation coefficient and the best fitting effect of the minimum standard deviation is determined as the error compensation function of the channel, and the measurement data of the channel is modified by this function.
【學位授予單位】：西安科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TD441

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