The Implementation of a Modulated Middle-Frequency Constant Current Electrical Stimulation System

• Main Authors: Hao-Pai Cheng, 程皓白
• Other Authors: Yan-Chay Li
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/40872596269032215665

碩士 === 義守大學 === 電子工程學系碩士班 === 94 === Electrical stimulator is a machine which can generate a serial of voltage or current pulse signals. These signals are applied to human nerve or muscle system for treatment or rehabilitation. The electrical stimulator is divided into several type depends on the current pulse frequency. The frequency less than 1Khz are known as low-frequency, the middle-frequency are the frequency between 1Khz to 10Khz, while high-frequency are those higher than 10Khz. Compare with the low-frequency stimulator, the middle-frequency electrical stimulator has better tissue penetration ability in clinical application. Therefore, middle-frequency electrical stimulator is usually used for nerve and muscle pain relief, tissue heal over, improve blood circulation, and reduce edema. In the present days, most of the commercial electrical stimulators are low-frequency type. The middle-frequency electrical stimulators are relatively rare. The goal of this research is to design a modulate middle-frequency constant current electrical stimulation system. The constant current make the current output of the system become fix no matter the resistance change between skin and electrode or different kinds of stimulation waveforms. This stimulation system can make the user feel more gentle and comfortable when under treatment. A single chip microprocessor is adopted here as the kernel of the system. The microprocessor with its powerful operation function and control program as well as other powerful peripherals is suitable for development of this system. New treatment mode and new human machine interface can be implemented on this system to gain better cure result.