Dissertation > Excellent graduate degree dissertation topics show

Design and Simulating of Magnetic Stimulator for Lower Power-consumption in High-Frequency

Author: AnHao
Tutor: YinTao；LiuZhiPeng
School: Peking Union Medical College , China
Course: Biomedical Engineering
Keywords: TMS rTMS Simulation Circuit Design Energy-Utilization
CLC: R318
Type: Master's thesis
Year: 2009
Downloads: 9
Quote: 1
Read: Download Dissertation

Abstract


Transcranial magnetic stimulation(TMS) is a relatively new technique,which is non-invasive and painless used to simulate the central and peripheral neural tissues. The principle is generating time-varying magnetic fields to stimulate the cerebral cortex neuron and inducing eddy current inside the tissues.TMS does not need to contact the human’s body directly during the stimulating process,it is non-invasive, painless,and it can be repeated easily.Hence,TMS takes more advantages than the traditional electric stimulate.TMS has been used widely in academic research, diagnoses,therapy and so on.With the developing and improving of TMS,the repetative TMS(rTMS is needed in the interesting research area and clinic.The commercial rTMS stimulator produced by west developed country’s manufacturer has already been in market at present,such as Medtronic.Co.Ltd and Magstim.Co.Ltd.However,research work on rTMS started much later in our country,and there is no rTMS stimulator produced with developed techniques in domestic.The primary problem is the high power consumption when high-frequency stimulation is applied. In this paper,the design of a circuit to decrease power consumption was presented.At first,the basic principle of TMS was introduced,the TMS-module was established and the simulation with Matlab combined with the model of nervous circuit,and then detailed analysis of this module to optimize the electrical parameters was given,therefore select charging voltage V_c=2000V,Capacitor C=100μF,inductor L=22μH,resistor R=0.2Ωand use the biphasic stimulus.As a result of the analysis in the course of energy transport,a system-circuit design was proposed.The system was controlled by a MCU unit for intelligent operating of charging and discharging and also the system was simulated by the software of Multisim 10.1.The results of simulation manifested the system with energy-recycled design and optimized parameters saved almost 21%power consumption in the frequency of 30Hz.This design performed a good energy-saving efficiency.Finally,we use Magsim Rapid~2---an advanced TMS device to test the discharging waveform compare with the system designed in the paper.In the end,a summarization was made in several altering implement for instructing the design of the TMS stimulator.

Related Dissertations

  1. The Setting Bases of Working Pressure in LNG Systems and Orthogonal Experiment Design of Heat Exchangers,TQ051.5
  2. Study of Interaction between Epoxy Molecules and Carbon Fiber Surface with Molecular Simulation,TB332
  3. Research on Mechanism Analysis and Modeling Simulation of Horizontal Well Tractor,P631.83
  4. Study on Springback of High-Strength Steel Stamping,TG386
  5. Numerical Simulation and Experiment on Hydroforming of Cups with Controllable Radial Pressure,TG386
  6. Research on Technology and Mechanism of Joining Cemented Carbide to Carbon Steel,TG454
  7. The Brake Performance of Hydraulic Retarder and Simualtion Research on Its Application for Aircraft Arrestment,TH137.331
  8. Research on the Aiming Signal Processing of the Optical Probe Measurement System,TH74
  9. Satellite Attitude Determination Based on Gyro and Star Sensor,V448.2
  10. Numerical Simulation of Film Cooling in Turbine Cascade with Non-Axisymmetric Endwall Method,V231.3
  11. Research on Orbital Control Method for Space Rendezvous and Docking,V526
  12. High Speed Aerodynamic Convection and Coupled Heat Transfer of Complicated Bodies,V215.4
  13. The Analysis on Characteris of Vibration Source about Vertical Vibration of Surrounding Environment Induced by Rail Transit,U211.3
  14. Single Neuron PID Control for Electro-Hydraulic Servo Unit of Ship Rudder,U666.152
  15. Simulation Analysis on Temperature Stress of RCC Arch Dam and Its Construction Joints Design Research,TV642.2
  16. Study on the Heat Transfer Characteristics of Particle Cluster in Circulating Fluidized Bed,TK124
  17. Numerical Simulation of SNCR Process of a 600MW Utility Boiler,TK222
  18. Numerical Simulation of Biomass Direct Reburning,TK16
  19. Numerical Simulation on Pulverized Coal Combustion Process in a 670T/H Tangential Firing Furnace,TK224.11
  20. Numerical Simulation on the Combustion Process in the Furnace of a 1000MW Lignite-Fired USC Boiler,TK224.11
  21. Study on Gas-Solid Two-Phase Flow in Spouted Beds,TK173

CLC: > Medicine, health > Basic Medical > Medical science in general > Biomedical Engineering
© 2012 www.DissertationTopic.Net  Mobile