摘要
目的:研制一种用于进行生物医学工程专业生理学实验的电刺激仪。方法:由高频振荡器产生正弦波,通过升压变压器得到符合最大幅值要求的正弦波,然后通过整流、滤波把正弦波变成高压直流信号,最后通过一个可调节频率和脉宽的控制信号控制开关输出刺激脉冲信号。结果:能够得到一个符合数据指标的刺激脉冲,幅度在1～80 V可调;频率在0.1～200 Hz可调;脉宽在0.1～5 ms可调。结论:设计的刺激脉冲可用于生理学的电刺激实验。
Objective To design a stimulating instrument for physiology experiment. Methods A sine wave was produced by a high frequency oscillator,and then the sine wave increased in voltage by a transformer to accord with the maximal range needed. Afterwards, the increscent sine wave became a direct current signal with high voltage by a rectifier and a filter. Finally, the signal became a stimulating impulse to be exported by a switch, which was controlled by a controlling signal with adjustable frequency and width. Results Voltage range adjusted between 1 and 80V; Frequency adjusted between 0.1 and 200Hz; Impulse width adjusted between 0.1 and 5ms. Conclusion The stimulating instrument designed can be used to do electricity stimulating experiment in Physiology,
出处
《医疗卫生装备》
CAS
2008年第3期26-27,共2页
Chinese Medical Equipment Journal
关键词
脉冲发生器
电刺激
生理学实验
impulse generator
electricity stimulation
physiology experiment
