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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

A versatile DAS for radial pulse wave and other cardiovascular measurement. / A versatile date acquisition system for radial pulse wave and other cardiovascular measurement

January 1993 (has links)
by Fan Kai Leung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1993. / Includes bibliographical references (leaves [87-96]). / Abstract / Acknowledgement / Chapter Chapter 1 --- Introduction / Chapter 1.0 --- Foreword / Chapter 1.1 --- Project Objective / Chapter 1.2 --- Historical Background / Chapter 1.3 --- The properties of Radial Pulse Wave-An Engineering View / Chapter 1.4 --- The development in RPW acquisition and research-An Overview / Chapter 1.5 --- Problems to be solved for RPW data acquisition system / Chapter 1.6 --- The contribution of this project / Chapter Chapter 2 --- System Realisation / Chapter 2.0 --- Foreword / Chapter 2.1 --- System Development-An Overview / Chapter Chapter 3 --- Signal Preprocessing Unit / Chapter 3.0 --- Foreword / Chapter 3.1 --- Earlier Methods for offset Cancellation / Chapter 3.2 --- Feedback control of the offset and d.c. transient cancellation / Chapter 3.3 --- The level shifting circuit / Chapter 3.4 --- Amplifier / Chapter 3.6 --- The 50Hz notch filter / Chapter 3.7 --- The 4th order low pass filter / Chapter 3.8 --- Circuit for controlling valves and pump / Chapter Chapter 4 --- Signal Processing for RPW Acquisition / Chapter 4.0 --- Foreword / Chapter 4.1 --- Artefact and signal noise / Motion artefact / Respiratory Artefact / Base line shift due to tissue displacement / Electromagnetic Interference and circuit noise / Chapter 4.2 --- Artefact Correction by the Switch Capacitive Device(MF-6) / Operating principle / Result and Discussion / Chapter 4.3 --- Artefact Correction by Recursive Moving Average(RMA) / The RMA Operation / Software Implementation of RMA / Chapter 4.4 --- Further Improvement of the RMA baseline estimator / Chapter 4.5 --- Signal Noise Suppression by Non-linear filtering / Chapter 4.6 --- An arithmetic cycle detector for RPW and ECG / Chapter Chapter 5 --- The Software for the DAS / Chapter 5.0 --- Foreword / Chapter 5.1 --- The present DAS software / Chapter 5.2 --- The software design / Chapter 5.3 --- Important points about the software / Signal input / Waveform display and smooth scrolling / Dynamic display area allocation / The software FIFO data buffer / Chapter Chapter 6 --- Recapitulation and Topics for Further Investigation / Chapter 6.0 --- Foreword / Chapter 6.1 --- Recapitulations / Objective / Difficulties / System Realisation / Signal Preprocessing Unit / Signal Processing / The software / Chapter 6.2 --- Direction for further investigation / Improvement to the DAS / Data analysis and modelling research / Appendix A The Comparasion of the RMA and SMA Characteristics / Appendix B List of Publications
2

A haptic system for pulse palpation via the internet.

January 2001 (has links)
Xiang Guoliang. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2001. / Includes bibliographical references (leaves 51-53). / Abstracts in English and Chinese. / Acknowledgement --- p.1 / Abstract --- p.6 / Chapter 1 --- Introduction --- p.9 / Chapter 2 --- The Pulse Detection Sensor --- p.14 / Chapter 2.1 --- Pulse Diagnosis in Traditional Chinese Medicine --- p.14 / Chapter 2.2 --- The Pulse Detection Sensor --- p.15 / Chapter 2.2.1 --- The Sensor Design --- p.16 / Chapter 2.2.2 --- Pulse Signal Acquisition --- p.20 / Chapter 2.2.3 --- Experiment Results --- p.21 / Chapter 3 --- Internet Communication --- p.22 / Chapter 3.1 --- Network Basics --- p.22 / Chapter 3.2 --- Java --- p.24 / Chapter 3.3 --- Program Flow Diagram --- p.24 / Chapter 3.4 --- Results --- p.27 / Chapter 4 --- The Haptic Device --- p.28 / Chapter 4.1 --- Overview --- p.28 / Chapter 4.2 --- The Design --- p.29 / Chapter 4.2.1 --- The First Design --- p.31 / Chapter 4.2.2 --- The Prototype --- p.32 / Chapter 4.3 --- The Kinematics --- p.34 / Chapter 4.4 --- The Dynamics --- p.35 / Chapter 4.5 --- Reproducing Pulses by Position Control --- p.37 / Chapter 4.5.1 --- The Motor Controller --- p.37 / Chapter 4.5.2 --- Trajectory Following --- p.40 / Chapter 4.5.3 --- Experiment Results --- p.41 / Chapter 4.6 --- Reproducing Pulses by Force Control --- p.45 / Chapter 4.6.1 --- The Desired Forces --- p.46 / Chapter 4.6.2 --- The Force Controller Design --- p.46 / Chapter 4.6.3 --- Experiment Results --- p.47 / Chapter 5 --- Conclusions and Future works --- p.49 / Bibliography --- p.51

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