一种新型耳鸣检测治疗仪的研制

Research of a New Tinnitus Instrument with Detection and Treatment

介绍了一种新型耳鸣治疗仪的工作原理及其软硬件设计;该仪器采用虚拟仪器编程语言（LabWindows/CVI）编写人机交互界面;硬件电路采用嵌入式C8051F330单片机作为主控芯片,使用DDS技术产生输出频率在31~12000Hz的范围内能达到1Hz的精度和1%的波形失真度的周期波形;采用SD卡存储治疗用的多种模拟声音;掩蔽声强级采用多级电阻衰减器网络,由单片机自动切换实现声强级输出在-10~120dB的范围内达到±0.5dB的精度;系统实现了数字化输出治疗耳鸣的多种掩蔽声,具有较强的实用性和良好的可操作性。

The work and design of hardware and software of new type instrument for curing tinnitus is introduced.The detector uses virtual instrument programming language（LabWindows/CVI） to write the interface of human-machine;The system＇s hardware devices,using C8051F330 microcontroller as the master chip.The DDS technolog is used to produce periodic waves,it improves wave which make the distortion is within 1%,timbre and precision which is confined in 1Hz range of 30Hz-12000Hz.It use one SD chip to putout many natural sounds.The multi-level attenuation resistor network is used to control intensity,it confines precision in ±0.5dB range of-10dB-120dB.computer automatic control tinnitus devices,It can offer many shelter sounds,regulate frequency and volume by digital.The system has strong practical and good operability.