医用体外碎石机焦点声场特性检测与校准  

Detection and calibration of focus sound field characteristics in EWSL

作　　者：赵军[1] 齐飞[1] 徐寅[1] 郭天太[1] 许照乾[2] 

机构地区：[1]中国计量大学计量测试工程学院,浙江杭州310018 [2]浙江省计量科学研究院,浙江杭州310013

出　　处：《中国计量大学学报》2017年第2期141-145,175,共6页Journal of China University of Metrology

基　　金：国家自然科学基金资助项目(No.51375467);质检公益性行业科研专项项目(No.201410009)

摘　　要：为了检测医用体外碎石机焦点位置的声场特性,判断是否符合国家标准要求,特采用直接测量的方法,使用针式水听器在时间和空间域内进行逐层扫描,寻找焦点位置并测量焦点位置的声压强度;通过能量图直观显示焦点位置的能量分布,通过测量采集到焦点位置连续10次冲击波的声场强度、脉冲上升时间、脉冲宽度.这样所得到的医用体外碎石机焦点声场特性符合国家标准的要求.To test the sound field characteristics of the focal position of EWSL and to determine whether the standard is in compliance with relevant national standards, the needle hydrophone was used to scan the layers in the time and space domain so as to find the position of the focus and to measure the sound pressure intensity at the focal position. The energy distribution of the focal position was displayed by the energy chart. Through the measurement, the sound field intensity, the rise time and the pulse width of the 10 shock waves were collected. The results show the EWSL focus sound field characteristics meet the national standards.

关 键 词：医用体外碎石机 焦点声场 水听器 声场特性 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]