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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 林致廷 | |
| dc.contributor.author | Tse-Yen Liu | en |
| dc.contributor.author | 劉則言 | zh_TW |
| dc.date.accessioned | 2021-06-08T03:02:13Z | - |
| dc.date.copyright | 2017-07-21 | |
| dc.date.issued | 2017 | |
| dc.date.submitted | 2017-07-19 | |
| dc.identifier.citation | [1] Zhu, Qian, et al. 'Iot gateway: Bridgingwireless sensor networks into internet of things.' Embedded and Ubiquitous Computing (EUC), 2010 IEEE/IFIP 8th International Conference on. IEEE, 2010.
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Instrum., vol. 8, no. 8, pp. 621–627, 1975. [18] Marschner, U., et al. 'Integration of a wireless lock-in measurement of hip prosthesis vibrations for loosening detection.' Sensors and Actuators A: Physical 156.1 (2009): 145-154. [19] M. O. Sonnaillon and F. J. Bonetto, “A low-cost, high-performance, digital signal processor-based lock-in amplifier capable of measuring multiple frequency sweeps simultaneously,” Rev. Sci. Instrum., vol. 76, p. 024703(1-7), Feb. 2005. [20] Stanford Research Systems “Digital Lock-In Amplifiers SR810 and SR830 — DSP lock-in amplifiers,” datasheet. [21] De Marcellis, A.; Ferri, G.; D'Amico, A.; di Natale, C.; Martinelli, E. A fully-analog lock-in amplifier with automatic phase alignment for accurate measurements of ppb gas concentrations. IEEE Sens. J. 2012, 12, 1377–1383. [22] Wu, T. H., Chang, C. C., Vaillant, J., Bruyant, A., & Lin, C. W. (2016). DNA biosensor combining single-wavelength colorimetry and a digital lock-in amplifier within a smartphone. 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'A fully-analog lock-in amplifier with automatic phase alignment for accurate measurements of ppb gas concentrations.' IEEE Sensors Journal 12.5 (2012): 1377-1383. [34] PerkinElmer instruments, “What is a Lock-in Amplifier?” Technical Note TN 1000. [35] Sonnaillon, M. O., & Bonetto, F. J. (2005). A low-cost, high-performance, digital signal processor-based lock-in amplifier capable of measuring multiple frequency sweeps simultaneously. Review of Scientific Instruments, 76(2), 024703. [36] ECE 209: Circuits and Electronics Laboratory, “Phase-Shifter Circuit∗, ECE 209: Circuits and Electronics Laboratory.” [37] Stanford Research Systems “About Lock-In Amplifiers” Application Note #3. [38] Tseng, Chih-Cheng, “鎖相迴路(Phase Lock Loop, PLL).”Wireless Communication Network Lab. [39] Muir Morrison, Rachel Miller, Mike Gallaspy, “Designing a Lock-in Amplifier with Analog to Digital Conversion,” PPT. [40] Chen, X., Chang, J., Wang, F., Wang, Z., Wei, W., Liu, Y., & Qin, Z. (2016). 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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/20761 | - |
| dc.description.abstract | 物聯網時代的來臨，預告了新一代產品將具備無線傳輸資料、即時監控環境資訊的功能，也等同於宣告了世界即將踏入智慧生活的新世代。為了能維持搜集資料的精準性與完整性，如何在感測器端與無線傳輸端降低雜訊的干擾便顯得相當重要；另一方面，用來將感測器資訊上傳至網際網路的無線網路技術，也需要克服環境雜訊可能造成的影響，未來才能針對特定區域的特定目標進行即時資訊監控。
本論文為一低成本鎖相放大器研究，傳統的鎖相放大器大多由弦波作為輸入訊號，但是在電路複雜度方面，方波電路的製造成本比弦波電路來的低。因此，本研究將探討商用IC組成的鎖相放大器電路在驅動波形為方波與弦波下抑制雜訊的能力，分析當鎖相放大器全面採用方波數位化後，數位鎖相放大器在抑制雜訊方面可能遭遇的影響。在未來的物聯網產品中，廠商可以在製造成本與產品精準度的取捨中，挑選適合的鎖相放大器設計。 | zh_TW |
| dc.description.abstract | With the maturation of IoT technology, the new products are necessarily equipped with the abilities that can deliver wireless data and monitor real-time environmental circumstance, and it also declares that the world is going to enter the new era of intelligent living. In order to maintain the precision and integrity of the collected data, the ability of reducing noise interferences in both sensor part and wireless transmission part becomes the main point when deciding the efficiency of IoT products. Additionally, the wireless internet technology, which is responsible for uploading the data collected by sensor, has to conquer the impact of environmental noises. Under these premises, we are able to perform real-time monitoring toward the target within the certain area.
In this master’s thesis, we examine the impact in the ability to against the interference when we change the sine wave into square waveform in the input part of low cost lock-in amplifier, hoping that we can lower the cost of lock-in amplifier by replacing the highly complicated sine wave with the simpler square waveform. This will help companies to lower their cost if they can choose the lock-in amplifier with appropriate data precision that matches their product. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-08T03:02:13Z (GMT). No. of bitstreams: 1 ntu-106-R04945003-1.pdf: 2301086 bytes, checksum: b903452f1243482e35b386c51126f7d6 (MD5) Previous issue date: 2017 | en |
| dc.description.tableofcontents | 誌謝 i
中文摘要 ii ABSTRACT iii CONTENTS iv LIST OF FIGURES vi LIST OF TABLES viii Chapter 1 緒論 1 1.1 鎖相放大器的重要性 1 1.2 物聯網(Internet of Things, IoT) 2 1.3 論文架構 3 Chapter 2 鎖相放大器架構與過往研究 5 2.1 文獻回顧 5 2.2 鎖相放大器架構 7 2.2.1 輸入端(Signal Input) 7 2.2.2 參考端(Reference Input) 8 2.2.3 解調器(Demodulator) 10 2.2.4 低通濾波器(Low Pass Filter)與放大器(Amplifier) 11 2.3 鎖相放大器數學模型 12 Chapter 3 鎖相放大器實驗 15 3.1 設計鎖相放大器 15 3.2 光訊號檢測實驗 18 3.3 輸入波形對鎖相放大器的影響 19 Chapter 4 實驗結果與討論 20 4.1 鎖相放大器實現與量測 20 4.2 光訊號檢測實驗結果 22 4.3 輸入波形對鎖相放大器實驗結果 23 4.3.1 鎖相放大器波形量測 23 4.3.2 數學模型探討──方波 24 4.3.3 數學模型探討──弦波 27 4.4 改善諧波對鎖相放大器影響 28 4.5 白雜訊(white noise)對鎖相放大器影響 29 Chapter 5 結論與未來展望 30 5.1 結論 30 5.2 未來展望 30 REFERENCE 31 | |
| dc.language.iso | zh-TW | |
| dc.title | 應用於物聯網技術上之低成本鎖相放大器研究 | zh_TW |
| dc.title | The development of low-cost lock-in amplifier module for Internet-of-Thing sensing technologies | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 105-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 吳文中,陳奕帆,李舒昇 | |
| dc.subject.keyword | 數位鎖相放大器,方波,感測器,無線傳輸,物聯網, | zh_TW |
| dc.subject.keyword | Digital lock-in amplifier,square wave signal,sensor,wireless transmission,Internet of Things, | en |
| dc.relation.page | 34 | |
| dc.identifier.doi | 10.6342/NTU201701711 | |
| dc.rights.note | 未授權 | |
| dc.date.accepted | 2017-07-19 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 電子工程學研究所 | zh_TW |
| 顯示於系所單位： | 電子工程學研究所 | |
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