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    Please use this identifier to cite or link to this item: http://ccur.lib.ccu.edu.tw/handle/A095B0000Q/417

    Title: 微振動體振動率與位移量之檢測雷達設計;Design of a Micro-Vibration Rate And Displacement Detection Radar
    Authors: 蔣嘉豪;JIANG, JIA-HAO
    Contributors: 電機工程研究所
    Keywords: 演算法;微振動;駐波波包解調雷達;位移量;micro vibration;standing wave envelope demodulation radar;algorithm;displacement
    Date: 2017
    Issue Date: 2019-07-17
    Publisher: 電機工程研究所
    Abstract: 本論文運用駐波波包解調雷達技術,設計一高靈敏度非接觸式微波微振動檢測器。本檢測器整合駐波波包解調雷達、微控制器、無線藍芽傳輸模組、與手機App軟體,配備有LCD模組、Wi-Fi模組、GPS模組等擴充孔,成為一完整之感測與無線回報功能之感測器。其中核心技術是微振動訊號處理演算法:(1)電路校正演算法,用於消除雷達電路中耦合器以及相移器所造成之溢漏信號。(2)自動相位調整演算法,透過調控相移器量測空間中之駐波波型,並改善量測靈敏度和正確度。(3)相對位移估算演算法,透過訊號強度真值表之建立用來估算待測物相對位移。此系統尺寸為53×41 mm2,約2/3張健保卡大小,在基本配備使用時,功率消耗最大值為450 mW。在12×8 cm2金屬平板的10 m、1.50 Hz振動實驗中,偵測誤差值為0.01 Hz (0.6%)。另外,針對穿戴式手腕脈搏量測的應用,此系統的量測結果與血壓計和手按計數進行比對,方均根誤差為0.8-1.3 BPM。
    In this thesis, a high-sensitive non-contact microwave micro-vibration detector was designed, based on standing-wave envelope demodulation technique. This highly-integrated detector includes a standing-wave envelope demodulation radar, microprocessor, bluetooth, and mobile-phone App software. This detector is also incorporated with LCD display, Wi-Fi and GPS modules for further application extension. The core signal processing in this detector are: first, system calibration algorithm for elimination of hardware RF impairments; Second, automatic phase shifting algorithm for maximal detection accuracy and sensitivity; and Third, the relative displacement computation for vibration displacement estimation. The size of demonstrated detector is 5.3×4.1 cm2 and the dc power consumption is 450 mW. The experimental results show that for a 1.50 Hz, 10 m vibration metal plate of 12×8 cm2, the detection error rate is less than 0.01 Hz (0.6%). Moreover, for human wrist pulse non-contact wearable measurement, the root-mean-squared error is 0.8-1.3 BPM, compared with hand count and with commercial blood-pressure and pulse meter.
    Appears in Collections:[電機工程研究所] 學位論文

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