本文選題：磁梯度張量 + 通信協(xié)議　； 參考：《吉林大學(xué)》2015年碩士論文

【摘要】：通過提取并解釋疊加在地磁場上的由磁性體造成的異常磁場，磁力勘探被廣泛應(yīng)用于地質(zhì)普查、金屬礦勘探以及軍事應(yīng)用等領(lǐng)域。由于地磁場的梯度很小，，因此相比于傳統(tǒng)的磁力勘探方法，磁梯度張量探測具有強化異常磁場，弱化背景磁場的優(yōu)點。但是在磁梯度張量探測過程中探頭的姿態(tài)變化會導(dǎo)致所測的磁場梯度產(chǎn)生較大的波動，引入虛假異常，使解釋結(jié)果不準確。針對這一問題，本文設(shè)計了軟硬結(jié)合的數(shù)據(jù)同步保存方法，推導(dǎo)了載體坐標系與地理坐標系的變換公式，來實現(xiàn)探頭的姿態(tài)校正，并通過實驗驗證了方案的有效性。 本文的具體研究內(nèi)容有： (1)簡要說明了磁法勘探的原理，著重介紹了磁梯度張量測量原理，然后敘述了課題研究目的與意義，接下來對磁梯度張量測量的國內(nèi)外發(fā)展現(xiàn)狀及趨勢進行了說明。對整個硬件系統(tǒng)的設(shè)計思路進行了分析，以硬件原理框圖的形式給出了整個系統(tǒng)各個部件的構(gòu)成及其相互連接關(guān)系。 (2)分析了高溫超導(dǎo)磁力儀SQUID串口通信和IAPS20慣性導(dǎo)航系統(tǒng)網(wǎng)口通信的工作原理，針對高溫超導(dǎo)磁力儀串口通信開發(fā)了串口通信軟件，并以軟件運行流程圖的形式進行了描述，以TCP/IP協(xié)議為基礎(chǔ)，闡述了GNSS/慣性導(dǎo)航組合系統(tǒng)與PC104工控機之間的網(wǎng)口通信方式，設(shè)計了基于Sockets套接字的網(wǎng)口通信軟件，并對網(wǎng)口通信軟件的關(guān)鍵性代碼進行了注釋說明，對網(wǎng)口通信軟件的運行思路以流程圖的形式給出。 (3)針對在磁梯度張量測量中，梯度傳感器的姿態(tài)發(fā)生變化會導(dǎo)致所測的磁場梯度產(chǎn)生較大的波動，影響對異常數(shù)據(jù)的解釋與反演的問題，設(shè)計了利用慣導(dǎo)系統(tǒng)測得的姿態(tài)信息對超導(dǎo)傳感器測量的張量數(shù)據(jù)進行校正并對慣導(dǎo)數(shù)據(jù)與張量數(shù)據(jù)的同步采集與保存設(shè)計了解決方案。 (4)磁梯度儀采集的磁梯度張量數(shù)據(jù)是基于本身的載體坐標系，該數(shù)據(jù)隨著坐標體系的變換而隨機變化，慣性導(dǎo)航設(shè)備記錄的姿態(tài)信息是基于地理坐標系，為固定坐標系。通過分析兩個坐標系之間的對應(yīng)關(guān)系，推導(dǎo)姿態(tài)變換方程，將基于不斷變化的載體坐標系中的數(shù)據(jù)變換到基于地理坐標系（基準坐標系）下的磁梯度張量數(shù)據(jù)，為磁梯度張量測量姿態(tài)校正做好理論準備。 (5)針對系統(tǒng)設(shè)計了測試試驗，通過Matlab軟件將實驗數(shù)據(jù)進行處理，給出了波形圖，并對結(jié)果進行了分析，驗證了數(shù)據(jù)處理方法的準確性。 (6)對本論文進行了最后總結(jié)，分析了本系統(tǒng)仍然存在的不足，并提出需要繼續(xù)進行的研究和試驗，以便系統(tǒng)性能能夠進一步的提高。 本論文是863計劃主題項目《航空地球物理勘查技術(shù)與裝備》子課題《航空超導(dǎo)全張量磁梯度測量系統(tǒng)樣機研制》的部分研究內(nèi)容。
[Abstract]:By extracting and interpreting the anomalous magnetic field caused by magnetic body superimposed on the geomagnetic field, magnetic exploration is widely used in geological survey, metal ore exploration and military application. Because the gradient of geomagnetic field is very small, compared with the traditional method of magnetic exploration, magnetic gradient Zhang Liang detection has the advantages of strengthening anomalous magnetic field and weakening background magnetic field. However, in the process of magnetic gradient Zhang Liang detection, the change of probe attitude will lead to a large fluctuation of the measured magnetic field gradient, which leads to the introduction of false anomalies, which makes the interpretation results inaccurate. In order to solve this problem, this paper designs a method of data synchronization, deduces the transformation formula between carrier coordinate system and geographical coordinate system to realize the attitude correction of the probe, and verifies the validity of the scheme through experiments. The main contents of this paper are as follows: 1) the principle of magnetic exploration is briefly explained, the principle of magnetic gradient Zhang Liang measurement is emphatically introduced, and the purpose and significance of the research are described. Then the current situation and trend of magnetic gradient Zhang Liang measurement at home and abroad are explained. The design idea of the whole hardware system is analyzed. In the form of hardware principle block diagram, the composition of each component of the whole system and its connection relationship are given. The working principle of squid serial port communication and IAPS20 inertial navigation system network interface communication are analyzed. The serial communication software is developed for the serial communication of HTS magnetometer, and described in the form of software flow chart. Based on TCP / IP protocol, the communication mode between GNSS / inertial navigation integrated system and PC104 industrial control computer is described. The socket based communication software is designed, and the key code of the socket communication software is annotated. The train of thought of the communication software of the network port is given in the form of flow chart. (3) in the magnetic gradient Zhang Liang measurement, the change of the gradient sensor's attitude will lead to the great fluctuation of the measured magnetic field gradient. Problems affecting interpretation and inversion of anomalous data, In this paper, the attitude information measured by inertial navigation system (ins) is used to correct the Zhang Liang data measured by superconducting sensors, and a solution for synchronous acquisition and preservation of inertial navigation data and Zhang Liang data is designed. The magnetic gradient Zhang Liang data of the set are based on its own carrier coordinate system. The data changes randomly with the transformation of coordinate system. The attitude information recorded by inertial navigation equipment is based on geographical coordinate system and is a fixed coordinate system. By analyzing the corresponding relationship between the two coordinate systems, the attitude transformation equation is derived, and the magnetic gradient Zhang Liang data based on the changing carrier coordinate system is transformed to the magnetic gradient Zhang Liang data based on the geographical coordinate system (datum coordinate system). The test experiment is designed for the system, the experimental data are processed by Matlab software, the waveform diagram is given, and the results are analyzed. The accuracy of the data processing method is verified. Finally, this paper is summarized, the shortcomings of the system are analyzed, and the further research and experiments are put forward so that the system performance can be further improved. This paper is part of the research content of 863 project "Aeronautical Geophysical Prospecting Technology and equipment" sub-project "Research on the prototype of Aeronautical Superconducting Zhang Liang Magnetic gradient Measurement system".
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P631.1

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