骨声振动分析中软组织加速度计的影响分析  

Influence of accelerometer and soft tissue on sound vibration analysis of bone

作　　者：彭健新[1] 马玉英[1] 张若昕[1] 陈启敏[1] 

机构地区：[1]陕西师范大学应用声学研究所,西安710062

出　　处：《声学技术》1996年第2期64-67,共4页Technical Acoustics

摘　　要：在骨声振动分析中皮肤、肌肉等软组织、加速度计对结果有一定的影响。本文分析在体股骨测 试的情况，用力电类比的方法分析这些因素对骨声振动的影响。结果表明：加速度计的质量大小、 及加速度计与骨之间的软组织硬度对结果影响较大。测试时频率分析范围必须远小于加速计在软 组织上的共振频率而远大于软组织的自振频率。Accelerometer and soft tissue such as skin and muscle have an influence on the result of sound vibration analysis of bone. Measurement of the tibia and the influence of soft tissue and accelerometer on the bone sound vibration has been investigated by force-voltage analogue circuit in this paper. The result shows that the mass of accelerometer and stiffness of soft tissue between accelerometer and bone have a significant influence. It is suggested that frequency to be analyzed must be less than the resonant frequency of the accelerometer on the soft tissue and much greater than the resonant frequency of the soft tissue.

关 键 词：骨声振动分析 共振频率 骨 软组织 加速度计 

分 类 号：R680.4[医药卫生—骨科学]