Feasibility studies of self-powered piezoelectric sensors.

• Other Authors: Ng, Tsz Ho.
• Format: Others
• Language: English; Chinese
• Published: 2004
• Subjects: Detectors > Design and construction; Sensor networks; Piezoelectric devices
• Online Access: http://library.cuhk.edu.hk/record=b5892014; http://repository.lib.cuhk.edu.hk/en/item/cuhk-324558

Ng Tsz Ho. === Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. === Includes bibliographical references (leaves 67-70). === Abstracts in English and Chinese. === ABSTRACT --- p.i === 摘要 --- p.ii === ACKNOWLEDGEMENTS --- p.iii === LIST OF FIGURES --- p.iv === LIST OF TABLES --- p.ix === Chapter CHAPTER 1 --- INTRODUCTION --- p.1 === Chapter 1.1 --- Background --- p.1 === Chapter 1.2 --- Literature Review --- p.3 === Chapter 1.3 --- Research Objectives --- p.5 === Chapter 1.4 --- Thesis Organization --- p.5 === Chapter CHAPTER 2 --- MODELING OF PIEZOELECTRIC SENSOR/GENERATOR --- p.6 === Chapter 2.1 --- Constitutive Equations --- p.6 === Chapter 2.2 --- Voltage Output of Piezoelectric Materials --- p.9 === Chapter 2.2.1 --- Short Circuit --- p.9 === Chapter 2.2.2 --- Open Circuit --- p.11 === Chapter 2.3 --- Sensitivity and Power Generation --- p.13 === Chapter 2.4 --- Modeling and Analysis of Sensor Structure --- p.23 === Chapter 2.4.1 --- Damping Ratio Estimation --- p.25 === Chapter (a) --- Half-power bandwidth method --- p.25 === Chapter (b) --- Linear interpolation method --- p.25 === Chapter 2.4.2 --- Trade-off between Resonant Frequency and Output Sensitivity of a Sensor --- p.29 === Chapter (a) --- Maximize Sme with constant wn --- p.31 === Chapter (b) --- Maximize wn with constant Sme --- p.33 === Chapter 2.5 --- Model Accuracy --- p.39 === Chapter CHAPTER 3 --- POWER HARVESTING --- p.41 === Chapter 3.1 --- Circuit Model --- p.41 === Chapter 3.2 --- Energy Storage --- p.47 === Chapter 3.3 --- Size Effect on Power Output --- p.49 === Chapter 3.4 --- Power Harvesting Circuit --- p.50 === Chapter 3.4.1 --- Performance of the Power Harvesting Circuit --- p.51 === Chapter (a) --- Power Harvesting Circuit Efficiency --- p.52 === Chapter (b) --- Useful Power Output --- p.53 === Chapter (c) --- System Efficiency --- p.56 === Chapter (d) --- Relationship between Input Excitation and Charge Time --- p.57 === Chapter 3.5 --- Harvested Energy for Wireless Transmission --- p.60 === Chapter CHAPTER 4 --- CONCLUDING REMARKS --- p.64 === Chapter 4.1 --- Sensor/Generator Design --- p.64 === Chapter 4.2 --- Potential Applications --- p.64 === Chapter 4.3 --- Conclusion --- p.65 === Chapter 4.4 --- Future Work --- p.66 === REFERENCES --- p.67 === APPENDIX --- p.71