【摘要】：電能作為一種重要的能源,其質(zhì)量的好壞不僅與人民生活息息相關(guān),而且關(guān)系到國(guó)民經(jīng)濟(jì)的總體利益。從某種意義上說(shuō),電能質(zhì)量的好壞反映了一個(gè)國(guó)家經(jīng)濟(jì)與科技水平的高低。要把我國(guó)建設(shè)成為“節(jié)約型社會(huì)”,科學(xué)地監(jiān)管電能質(zhì)量顯得尤為重要。 本文考慮到要采集和處理大量數(shù)據(jù)以及滿足實(shí)時(shí)性的要求,綜合比較幾種原始方案的優(yōu)缺點(diǎn),最終提出了基于ARM+DSP+CPLD雙CPU結(jié)構(gòu)設(shè)計(jì)方案。硬件方面采用模塊化的設(shè)計(jì)思路,主要設(shè)計(jì)了以AD7656為核心芯片的前端數(shù)據(jù)采集模塊、以TMS320VC5402為核心芯片的DSP數(shù)據(jù)處理模塊以及以S3C2410為核心芯片的ARM控制管理模塊。通過(guò)](?)MS320VC5402本身具有的HPI接口實(shí)現(xiàn)DSP與ARM之間的通信,采用DM9000設(shè)計(jì)了以太網(wǎng)接口電路,實(shí)現(xiàn)了電能質(zhì)量的遠(yuǎn)程監(jiān)控,并制作調(diào)試了相應(yīng)模塊的電路板。軟件方面,包括DSP數(shù)據(jù)處理模塊軟件設(shè)計(jì)和ARM主控管理模塊軟件設(shè)計(jì)。DSP數(shù)據(jù)處理模塊軟件部分給出了相應(yīng)的程序流程圖,重點(diǎn)介紹了ARM主控管理模塊軟件的設(shè)計(jì)。 數(shù)據(jù)采樣部分,CPLD負(fù)責(zé)邏輯控制,利用VHDL設(shè)計(jì)自動(dòng)狀態(tài)機(jī)來(lái)實(shí)現(xiàn)對(duì)A/D轉(zhuǎn)換和數(shù)據(jù)存儲(chǔ)的控制；數(shù)據(jù)處理方面,通過(guò)對(duì)實(shí)時(shí)信號(hào)處理的MATLAB仿真驗(yàn)證了經(jīng)過(guò)鎖相倍頻電路同步采樣后再通過(guò)FFT變換進(jìn)行諧波測(cè)量能夠解決頻譜泄露這一難題的理論正確性。 最后,成功安裝移植了Qt/X11、Qt/Embedded圖形開(kāi)發(fā)工具,并設(shè)計(jì)了本監(jiān)控終端的GUI界面,實(shí)現(xiàn)了遠(yuǎn)程監(jiān)控和分析電能質(zhì)量的目的。
[Abstract]:As an important energy source, the quality of electric energy is not only closely related to people's life, but also related to the overall interests of national economy. In a sense, power quality reflects the level of economy and science and technology of a country. In order to build our country into a "economical society", it is very important to supervise power quality scientifically. Considering the need to collect and process a large amount of data and to meet the requirements of real-time, this paper synthetically compares the advantages and disadvantages of several original schemes, and finally proposes a dual CPU structure design scheme based on ARM DSP CPLD. In the aspect of hardware design, we mainly design the front-end data acquisition module with AD7656 as the core chip, the DSP data processing module with TMS320VC5402 as the core chip and the ARM control management module with S3C2410 as the core chip. The communication between DSP and ARM is realized by the HPI interface of] (?) MS320VC5402, the Ethernet interface circuit is designed by DM9000, the remote monitoring of power quality is realized, and the circuit board of corresponding module is made and debugged. In terms of software, including DSP data processing module software design and ARM master control management module software design. DSP data processing module software part gives the corresponding program flow chart, the emphasis is on the ARM master control management module software design. In the part of data sampling, CPLD is responsible for logic control, and VHDL is used to design automatic state machine to realize the control of A- / D conversion and data storage. In the aspect of data processing, the MATLAB simulation of real-time signal processing verifies the theoretical correctness of harmonic measurement through FFT transform after synchronous sampling of phase-locked frequency-doubling circuit, which can solve the problem of spectrum leakage. Finally, the Qt/X11,Qt/Embedded graphic development tools are successfully installed and transplanted, and the GUI interface of the monitoring terminal is designed. The purpose of remote monitoring and power quality analysis is realized.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TM76;TP368.1

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