Acquisition of Low Level Sound and Vibration Measurements System

购置低水平声音和振动测量系统

• 批准号: 0079804
• 负责人: Mostafa Fatemi
• 金额: $ 24.55万
• 依托单位: Mayo Clinic Rochester
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-01 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0079804&HistoricalAwards=false
• 关键词: Acquisition; Low; Level; Sound; Vibration

Instrumentation will be aquired that will enable the measurment of low level sound and vibration in response to micro force. The instrumentation consists of 4 main components: (1) an anechoic chamber, (2) a scanning laser vibrometer, (3) a dual channel compact fiber vibrometer, and (4) a de-aeration system. The anechoic chamber reduces the background noise and vibration. Presently, background noise is the main limiting factor in the newly developed imaging method called vibro-acoustography. The scanning laser vibrometer allows measurment of vibrations in angstrom range and determination of the spatial distribution of motion in response to a small point force. The dual-channel fiber vibrometer will be used to simultaneously measure vibration at two points of the object. Finally, the de-aeration system is necessary to provide clean and completely degassed water for water tank experiments. Graduate students, research trainees and fellows, and senior investigators will use the above instrumentation. Addition of these equipment to will help to attract more qualified students in the Biomedical Imaging track.

将需要能够测量响应于微力的低水平声音和振动的仪器。该仪器由4个主要部件组成：（1）消声室，（2）扫描激光测振仪，（3）双通道紧凑型光纤测振仪，和（4）除气系统。消声室降低了背景噪声和振动。目前，背景噪声是新开发的称为振动声成像的成像方法的主要限制因素。扫描激光振动计可以测量埃范围内的振动，并确定响应小点力的运动的空间分布。双通道光纤测振仪将用于同时测量物体两点的振动。 最后，除气系统是必要的，以提供清洁和完全脱气的水水槽实验。研究生、研究实习生和研究员以及高级研究员将使用上述仪器。增加这些设备将有助于吸引更多合格的学生在生物医学成像轨道。