發(fā)布時(shí)間：2020-12-22 02:40

　　隨著科學(xué)技術(shù)的發(fā)展,能夠同時(shí)檢測(cè)多個(gè)參數(shù)的傳感網(wǎng)絡(luò)的需求越來越多。LC無源無線多功能傳感器系統(tǒng)作為一種植入式裝置,在大規(guī)模食品質(zhì)量的檢測(cè)等領(lǐng)域具有諸多的應(yīng)用。同時(shí)LC無源無線多功能傳感器系統(tǒng)與傳統(tǒng)的分立傳感器相比,具有檢測(cè)系統(tǒng)簡(jiǎn)單、成本低、尺寸小的優(yōu)勢(shì)。本論文提出了一種基于雙繼電器開關(guān)的多功能LC無源無線傳感系統(tǒng),并對(duì)提出的LC無源無線傳感系統(tǒng)進(jìn)行建模、仿真和實(shí)驗(yàn)驗(yàn)證,最終系統(tǒng)輸出多個(gè)諧振頻率的信號(hào),表明系統(tǒng)具有同時(shí)測(cè)量多個(gè)參數(shù)的功能。本論文提出的LC型無源無線傳感系統(tǒng)通過兩個(gè)開關(guān)控制三個(gè)不同的電容式傳感器,從而達(dá)到同時(shí)檢測(cè)三個(gè)參數(shù)的目的。傳感系統(tǒng)包括電感線圈、三個(gè)電容和兩個(gè)開關(guān)。傳感器線圈順序并聯(lián)三個(gè)不同的電容,其間依次串聯(lián)兩個(gè)開關(guān),從而構(gòu)成三個(gè)不同的LC諧振電路。讀取線圈與傳感器線圈通過磁耦合,以無線方式訪問傳感器并感應(yīng)出電壓,從而控制兩個(gè)開關(guān)。本論文使用ADS軟件對(duì)該LC傳感系統(tǒng)進(jìn)行建模和仿真,軟件中使用三個(gè)獨(dú)立的模塊分別表示壓力傳感器、相對(duì)濕度傳感器和溫度傳感器所對(duì)應(yīng)的三種不同的諧振頻率,并設(shè)置兩個(gè)工作在不同閾值上電磁繼電器開關(guān),從而該LC傳感系統(tǒng)的三個(gè)電容傳感器能夠同時(shí)測(cè)量三... 

【文章來源】：東南大學(xué)江蘇省 211工程院校 985工程院校 教育部直屬院校

【文章頁(yè)數(shù)】：72 頁(yè)

【學(xué)位級(jí)別】：碩士

【文章目錄】：
ABSTRACT
摘要
Chapter 1 INTRODUCTION
    1.1 Background
    1.2 Research state of multifunctional LC Passive Wireless Sensing System
        1.2.1 Specific winding stacked inductors approach
        1.2.2 Multifunctional LC sensors system using a relay switch
    1.3 Thesis Organization
    1.4 Conclusion
Chapter 2 BASIC MECHANISM OF LC SENSORS SYSTEM
    2.1 Working principle of LC passive wireless sensors
        2.1.1 Construction of LC Passive Wireless Sensor
    2.2 Intrinsic Parameters of LC sensors
        2.2.1 Resonant Frequency of parallel LC Sensor
        2.2.2 Q-Factor of parallel LC Sensor
        2.2.3 Coupling coefficient k and mutual inductance M of parallel LC Sensor
    2.3 Basic components of LC Sensors
        2.3.1 Capacitor
        2.3.2 Inductor
        2.3.3 Resistor
    2.4 Conclusion
Chapter 3 DESIGN AND ANALYSIS OF MULTIFUNCTION LC SENSORS SYSTEM
    3.1 Proposed Multifunctional LC passive wireless sensors system
        3.1.1 PCB layout representation in 2D
        3.1.2 Schematic circuit and actual circuit representation
        3.1.3 Schematic representation of working principle
    3.2 Mathematical analysis of triple parameter monitoring LC sensors system
        3.2.1 Both switches （ and ） in off-state
        3.2.2 1 in on-state and 2 in off-state
        3.2.3 Both switches （ and ） in on-state
    3.3 Conclusion
Chapter 4 SIMULATIONS AND EXPERIMENTS OF LC SENSORS SYSTEM
    4.1 Simulation tool （ADS 2011）
    4.2 Modeling of LC sensor system in ADS
        4.2.1 Schematic modelling of LC sensor system in ADS
        4.2.2 Layout modeling of LC sensor system in ADS
    4.3 Simulation Setups for the detection of , and
    4.4 Simulation results with different values of capacitor
    4.5 Experimental setup and results
    4.6 Conclusion
Chapter 5 CONCLUSION AND FUTURE WORK
Acknowledgement
Dedication
References
Figures
Tables
Acronyms
Author's Bibliography



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