本文選題：可控源 + 數(shù)據(jù)采集��； 參考：《中國(guó)海洋大學(xué)》2014年碩士論文

【摘要】：隨著經(jīng)濟(jì)的高速發(fā)展，人類(lèi)對(duì)地球資源的依賴(lài)日益增大。陸上資源已經(jīng)無(wú)法滿足經(jīng)濟(jì)高速發(fā)展的需要。海洋資源因其巨大的經(jīng)濟(jì)潛力，越來(lái)越被各個(gè)國(guó)家所重視。尤其是我國(guó)對(duì)能源的需求逐年攀升。能源危機(jī)已影響到了國(guó)家的經(jīng)濟(jì)穩(wěn)定和持續(xù)發(fā)展。研制出具有自主知識(shí)產(chǎn)權(quán)的電磁數(shù)據(jù)記錄儀系統(tǒng)是提高海底資源勘探能力的重要舉措。本文依托國(guó)家高技術(shù)研究發(fā)展計(jì)劃（863計(jì)劃）課題“海洋可控源水下系統(tǒng)裝備研制和理論研究”和山東省科技發(fā)展計(jì)劃課題“深海電場(chǎng)觀測(cè)系統(tǒng)關(guān)鍵技術(shù)研究”結(jié)合項(xiàng)目實(shí)際研發(fā)過(guò)程中的技術(shù)積累，以超低噪聲、低頻斬波放大和高精度、低漂移時(shí)鐘技術(shù)為保障，利用高精度Σ-Δ型A/D轉(zhuǎn)換器和FPGA+ARM技術(shù)完成高分辨率、低噪聲、低頻微弱信號(hào)放大的電磁數(shù)據(jù)記錄儀系統(tǒng)的設(shè)計(jì)。 本文主要圍繞數(shù)據(jù)采集站中的電磁數(shù)據(jù)記錄儀進(jìn)行研制。電磁數(shù)據(jù)記錄儀主要將電磁場(chǎng)傳感器接收回來(lái)的信號(hào)進(jìn)行放大處理，然后再利用FPGA技術(shù)對(duì)多個(gè)Σ-Δ型ADC進(jìn)行同步采集。將采集回來(lái)的數(shù)據(jù)利用FSMC總線傳給ARM，利用ARM結(jié)合FATFS文件系統(tǒng)將數(shù)據(jù)存儲(chǔ)到CF卡。設(shè)計(jì)中集成了超低噪聲低頻斬波放大、可編程放大器、多采樣率的24位Σ-Δ型ADC、高可靠性數(shù)據(jù)存儲(chǔ)，并以高精度時(shí)鐘控制單元對(duì)多臺(tái)采集站之間實(shí)現(xiàn)同步采集。利用FPGA為核心的數(shù)字設(shè)計(jì)對(duì)采集系統(tǒng)進(jìn)行采樣控制和數(shù)據(jù)處理，，提高了數(shù)據(jù)處理速度和精度，同時(shí)也優(yōu)化了整個(gè)系統(tǒng)硬件電路設(shè)計(jì)的規(guī)模。 本文從課題的研究意義、國(guó)內(nèi)外研究動(dòng)態(tài)、實(shí)現(xiàn)方法和技術(shù)等方面入手，對(duì)整個(gè)系統(tǒng)的設(shè)計(jì)做了詳細(xì)的理論分析并完成了軟硬件設(shè)計(jì)。論文主要取得以下研究成果：完成了電磁數(shù)據(jù)記錄儀的硬件原理圖設(shè)計(jì)，并加工成PCB板,完成整個(gè)硬件電路的調(diào)試；利用Verilog HDL語(yǔ)言完成整個(gè)FPGA的控制邏輯設(shè)計(jì)，通過(guò)仿真驗(yàn)證了邏輯功能的正確性；以ARM為平臺(tái)，完成了所有軟件的設(shè)計(jì)開(kāi)發(fā)和調(diào)試。對(duì)整個(gè)系統(tǒng)進(jìn)行了聯(lián)調(diào)，在野外做了一系列測(cè)試完成了項(xiàng)目提出的性能指標(biāo)。 系統(tǒng)設(shè)計(jì)的主要?jiǎng)?chuàng)新性主要體現(xiàn)在：采用基于FPGA的數(shù)字邏輯設(shè)計(jì)方式，在硬件方面降低了電路設(shè)計(jì)的規(guī)模，節(jié)約了成本并提高了系統(tǒng)的實(shí)時(shí)性和可靠性，軟件部分也易于仿真和測(cè)試；采用高精度的24為Σ-Δ型ADC提高了采集數(shù)據(jù)的分辨率及動(dòng)態(tài)范圍；設(shè)計(jì)了一套智能電源管理系統(tǒng)，有效降低了系統(tǒng)的功耗；采用時(shí)鐘標(biāo)定系統(tǒng)對(duì)高精度時(shí)鐘溫度補(bǔ)償模塊進(jìn)行標(biāo)定，提高了時(shí)鐘的精度。
[Abstract]:With the rapid development of economy, human dependence on the earth's resources is increasing. The land resources have been unable to meet the needs of rapid economic development. Because of its huge economic potential, marine resources have been paid more and more attention by various countries, especially in China, the demand for energy has increased year by year. The energy crisis has affected the economic stability of the country. The development of the electromagnetic data recorder with independent intellectual property rights is an important measure to improve the exploration ability of the submarine resources. This paper is based on the national high technology research and development plan (863 plan), "the research and development of marine controlled underwater system equipment and theory" and the project of "deep-sea electricity" in Shandong province. The key technology research of field observation system is combined with the technology accumulation in the process of the project, with ultra low noise, low frequency chopping and high precision, low drift clock technology as the guarantee, and using high precision sigma delta A/D converter and FPGA+ARM technology to complete the electromagnetic data recorder system with high resolution, low noise and low frequency weak signal amplification. Design.
This paper mainly focuses on the development of the electromagnetic data recorder in the data acquisition station. The electromagnetic data recorder mainly amplifies the signals received by the electromagnetic field sensor, and then uses the FPGA technology to synchronize the multiple sigma delta ADC. The collected data is transmitted to ARM by FSMC bus, and the FATFS text is combined with ARM. The system stores the data to the CF card. The design integrates ultra low noise low frequency chopper amplification, programmable amplifier, 24 bit sigma delta ADC with multi sampling rate, high reliability data storage, and synchronous acquisition between multiple acquisition stations with high precision clock control unit. Sampling and control of acquisition system using FPGA as the core digital design Data processing improves the speed and accuracy of data processing, and optimizes the scale of the hardware circuit design of the whole system.
This paper makes a detailed theoretical analysis on the design of the whole system and completes the design of hardware and software in detail from the research significance of the subject, the research trends at home and abroad, the realization method and technology. The paper mainly obtains the following research results: the design of the hardware schematic of the electromagnetic data recorder is completed, and the PCB board is processed to complete the whole hard work. The circuit is debugged; the whole FPGA control logic design is completed using Verilog HDL language. The correctness of the logic function is verified by simulation. The design, development and debugging of all software are completed on the platform of ARM. The whole system is adjusted, and a series of tests in the field have completed the performance index of the project.
The main innovation of the system design is: using the digital logic design method based on FPGA, reducing the scale of the circuit design in the hardware, saving the cost and improving the real-time and reliability of the system. The software part is also easy to simulate and test, and the high precision of 24 is the sigma delta ADC to improve the resolution of the data. A set of intelligent power management system is designed to effectively reduce the power consumption of the system, and the clock calibration system is used to calibrate the high precision clock temperature compensation module, and the precision of the clock is improved.

【學(xué)位授予單位】：中國(guó)海洋大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：P631.325

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