本文關(guān)鍵詞：船舶電站數(shù)據(jù)采集單元的設(shè)計與實現(xiàn)　出處：《大連海事大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 數(shù)據(jù)采集 DSP MBD LabVIEW OPC

【摘要】：隨著自動化技術(shù)飛速發(fā)展,現(xiàn)代船舶對其電站系統(tǒng)供電品質(zhì)要求越來越高,要求其電流幅值連續(xù)穩(wěn)定的同時發(fā)電成本要有所降低,這使得對電站系統(tǒng)的測控顯得越來越重要。而對電站系統(tǒng)的監(jiān)視、管理和控制依賴于實時性好、精度高的數(shù)據(jù)采集系統(tǒng)。針對這一需求,本論文參照國內(nèi)外電站管理的相關(guān)資料,基于DSP技術(shù)、先進的軟件實現(xiàn)技術(shù)和虛擬儀器技術(shù)設(shè)計了船舶電站數(shù)據(jù)采集單元。本文根據(jù)數(shù)據(jù)采集單元的基本要求給出了數(shù)據(jù)采集單元的硬件部分,軟件部分,虛擬儀表部分的設(shè)計和實現(xiàn)方法；針對數(shù)據(jù)采集單元DSP軟件的實現(xiàn)問題,基于MATLAB的自動代碼生成技術(shù)實現(xiàn)了DSP軟件,使得軟件的開發(fā)周期大大縮短,算法的可靠性得到增強；針對電站系統(tǒng)中信號中存在隨機干擾的問題,在信號采集通道設(shè)計了FIR帶通濾波器,提高了所采集信號的精度；針對數(shù)據(jù)采集系統(tǒng)頻率信號和功率因數(shù)采集的測量,本文采用軟測量的方法來實現(xiàn),基于MATLAB的Stateflow設(shè)計了軟測量算法,實現(xiàn)了對數(shù)據(jù)采集系統(tǒng)頻率,功率因數(shù)的準(zhǔn)確采集；針對數(shù)據(jù)采集系統(tǒng)的數(shù)據(jù)監(jiān)控需求,基于LabVIEW設(shè)計并實現(xiàn)了船舶電站數(shù)據(jù)采集單元的虛擬儀器,所設(shè)計的虛擬儀器能實時準(zhǔn)確地監(jiān)控船舶電站中多路測量數(shù)據(jù)；針對船舶電站綜合自動化需要共享數(shù)據(jù)的需求,基于LabVIEW設(shè)計并實現(xiàn)了船舶電站數(shù)據(jù)采集單元的OPC (OLE for Process Control)服務(wù)器。由測試結(jié)果顯示,所設(shè)計的OPC服務(wù)器能實時可靠地共享船舶電站的實時數(shù)據(jù)。本文所設(shè)計的船舶電站數(shù)據(jù)采集單元可以實時準(zhǔn)確采集船舶電站電力系統(tǒng)的電壓,電流,頻率,功率因數(shù)等信息。數(shù)據(jù)采集單元提供了RS232串口和CAN擴展接口,在上位機部分提供了OPC服務(wù)器,使得系統(tǒng)具有很強的數(shù)據(jù)開放性。該系統(tǒng)操作簡單,監(jiān)控界面友好,接口豐富,在船舶系統(tǒng)中具有一定的應(yīng)用前景。
[Abstract]:With the rapid development of automation technology, modern ships require more and more high power supply quality of their power station system, which requires its current amplitude to be continuous and stable, and the cost of power generation should be reduced. This makes the measurement and control of power station system more and more important, and the monitoring, management and control of power station system depend on the real-time and high precision data acquisition system. This paper refers to the domestic and foreign power station management related information, based on DSP technology. Advanced software realization technology and virtual instrument technology designed the data acquisition unit of marine power station. According to the basic requirements of the data acquisition unit this paper gives the hardware part and software part of the data acquisition unit. The design and implementation method of virtual instrument; Aiming at the realization of DSP software of data acquisition unit, the automatic code generation technology based on MATLAB realizes DSP software, which shortens the development period of the software and enhances the reliability of the algorithm. Aiming at the problem of random interference in the signal of power station system, the FIR bandpass filter is designed in the signal acquisition channel to improve the accuracy of the collected signal. Aiming at the measurement of frequency signal and power factor of data acquisition system, this paper adopts the method of soft sensing, and designs a soft sensor algorithm based on Stateflow of MATLAB. The accurate acquisition of the frequency and power factor of the data acquisition system is realized. According to the data monitoring requirement of the data acquisition system, the virtual instrument of the data acquisition unit of the ship power station is designed and implemented based on LabVIEW. The designed virtual instrument can monitor the multi-channel data of ship power station in real time and accurately. In order to meet the need of data sharing in integrated automation of marine power stations. The OPC Ole for Process Control server of marine power station data acquisition unit is designed and implemented based on LabVIEW. The designed OPC server can share the real-time data of the ship power station in real time and reliably. The data acquisition unit of the ship power station designed in this paper can collect the voltage, current and frequency of the power system of the ship power station in real time and accurately. Power factor and other information. The data acquisition unit provides RS232 serial port and CAN extension interface, and provides OPC server in the upper computer part. The system is easy to operate, friendly in monitoring interface, rich in interface, and has a certain application prospect in ship system.
【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U665.12

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本文編號：1427169