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    請使用永久網址來引用或連結此文件: https://ir.lib.ncu.edu.tw/handle/987654321/109966


    題名: 月球向量磁場儀資料擷取器開發與驗證;Development and Verification of Data Logger for Lunar Vector Magnetometer
    作者: 趙宇翔;CHAO, YU-HSIANG
    貢獻者: 太空科學與工程學系
    關鍵詞: 太空酬載;月表磁場;嵌入式系統;現場可程式化邏輯閘陣列;磁力計;Space payload;Lunar surface magnetic field;Embedded system;FPGA;Magnetometer
    日期: 2026-07-20
    上傳時間: 2026-10-20 14:50:36 (UTC+8)
    出版者: 國立中央大學
    摘要: 月球向量磁場儀 (Lunar Vector Magnetometer, LVM) 是一個具有 500 Hz 與 20 Hz 兩種取樣率並且理論解析度為 0.78 nT (Nanotesla,磁場單位) 的磁場量測儀器。LVM為國家太空中心的外太空探索計畫第一枚月球登陸器 (Outer Space Exploration-LunarLander 1, OSE-LL1) 酬載儀器研製計畫的其中一個科學酬載,科學目標是希望可以反推出登月處月表下的一維電阻率,還有哨聲波的傳播特性,預計搭乘月球登陸器於2028 年前往月球進行實地量測。LVM 包含三顆通量閘磁力計,一個可展開的桅桿,與一個數據記錄器 (Data Logger, DLG)。

    DLG 是基於 Xilinx Spartan 6 平台所開發的嵌入式系統,印刷電路板委託瑞安電
    資科技公司製造。本論文主要在介紹 DLG 的硬體電路與飛行軟體開發。電路部分使用Microblaze 做為 DLG 的計算核心,且掛載 Xilinx 官方的電路模組。軟體部分則是基於Microblaze 藉由撰寫 C 語言,搭配 Xilinx 官方提供的韌體驅動函數,對周邊晶片進行控制與資料讀寫,以達到記憶體管理、系統計時器、磁場科學資料取樣封裝、DLG 健康狀況監測,與月球登陸器的通訊等功能。

    驗證的部分使用亥母霍茲線圈產生已知磁場,對於 LVM 的磁場量測解析度、可量測範圍與量測頻寬進行驗證。指令遙傳介面的部分,作者利用 PyQt5 的套件,開發一套人機互動介面命名為 Magview,可以用來模擬月球登陸器 OBC (On-Board Computer) 的行為,包含對 DLG 下指令、讀取健康狀態封包和科學資料封包,縮短與月球登陸器的整合時長。Magview 也可以把量測到的科學資料封包存成 csv 檔,供後續科學資料分析校正。地面驗證則受限於亥母霍茲線圈的極限,實測結果顯示出 LVM可分辨 100 nT 的外加磁場,可量測範圍為 ±102.4 μT,且量測頻寬高達 100 Hz。;The Lunar Vector Magnetometer (LVM) is a magnetic field measurement instrument featuring two sampling rates of 500 Hz and 20 Hz, with a theoretical resolution of 0.78 nT. The LVM is a scientific payload developed for the Outer Space Exploration-Lunar Lander 1 (OSE-LL1) project under the Taiwan Space Agency (TASA), scheduled for in-situ measurements on the Moon in 2028. The primary scientific objectives of the LVM are to derive the one-dimensional electrical resistivity of the lunar subsurface at the landing
    site and to investigate the propagation characteristics of whistlers in the lunar ionosphere. The LVM assembly consists of three fluxgate magnetometers, a deployable boom, and a Data Logger (DLG).

    The DLG is an embedded system developed based on the Xilinx Spartan 6 platform, and its printed circuit board was manufactured by RAiTEK. Ltd. Inc. This thesis primarily introduces the hardware circuit and flight software development of the DLG. The hardware circuit utilizes MicroBlaze as the computational core of the DLG, incorporating official Xilinx hardware modules. The software development is based on the MicroBlaze processor, utilizing C language and Xilinx-provided firmware driver functions to control and access peripheral chips. This achieves functions such as memory management, system timing, magnetic field science data sampling and packing, DLG health status monitoring, and communication with the lunar lander.

    For performance verification, a Helmholtz coil was employed to generate calibrated magnetic fields to evaluate the LVM′s resolution, dynamic range, and bandwidth. Regarding the command and telemetry interface, a human-machine interface named Magview was developed using the PyQt5 package. Magview simulates the lunar lander′s On-Board Computer (OBC) to facilitate command transmission and the acquisition of health and science data packets, thereby streamlining the integration process with the lunar lander.
    Furthermore, Magview supports saving scientific data as CSV files for subsequent analysis and calibration. Ground verification, constrained by the limitations of the Helmholtz coil, demonstrates that the LVM can resolve an applied magnetic field of 100 nT, with a dynamic range of ±102.4 μT and a measurement bandwidth of up to 100 Hz.
    顯示於類別:[太空科學研究所 ] 博碩士論文

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