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1. 发明申请

US20140140179A1 INFRASOUND GENERATING DEVICE BASED ON A DISPLACEMENT-FEEDBACK TYPE VIBRATION EXCITER 有权
标题翻译：基于位移反馈类型振动EXCITER的信号发生装置
公开(公告)号：US20140140179A1
公开(公告)日：2014-05-22
申请号：US14130892
申请日：2012-08-16
申请人： Wen He , Longbiao He , Chunyu Wang , Yuanlai Zhou , Shushi Jia
发明人： Wen He , Longbiao He , Chunyu Wang , Yuanlai Zhou , Shushi Jia
IPC分类号： B06B1/10
CPC分类号： B06B1/10 , B06B1/0246 , B06B1/045 , B06B2201/40 , G01H3/005
摘要： The infrasound generating device based on a displacement-feedback type vibration exciter comprises a displacement-feedback type vibration exciter system, an infrasound generating chamber (3) and a laser vibrometer (1); the displacement feedback mechanism is adopted in the vibration exciter (2). The piston (31) is driven by the vibration exciter to move in a sinusoidal manner in the cavity (35) of the airtight infrasound generating chamber (3) and the standard infrasonic pressure signal with low harmonic distortion can be achieved. The displacement of the moving part (22) of the vibration exciter (2) can be measured by the laser vibrometer (1) through the measurement beam (15) injecting into the vibration exciter (2) through the optical channel running through the vibration exciter and the standard infrasonic pressure can also be obtained. The value of the standard sound pressure produced by the infrasound generating chamber is calculated. Such value is used as the calibration reference for the infrasound sensors (4) to be calibrated in order to achieve the primary calibration of the infrasound sensors. The standard infrasonic sensor can be installed inside the infrasound generating chamber (3) and the output of the standard infrasonic sensor can be used as the reference for the infrasonic sensor (4) to be calibrated in order to achieve the secondary calibration of the infrasound sensors. This invention has the advantages of technical maturity, high feasibility, easy to realize, high calibration accuracy and so on.
摘要翻译：基于位移反馈型振动激励器的次声发生装置包括位移反馈型振动激励器系统，次声发生室（3）和激光振动计（1）; 振动激励器采用位移反馈机构（2）。活塞（31）由振动激励器驱动，以正弦方式在气密次声发生室（3）的空腔（35）中移动，并且可以实现具有低谐波失真的标准次声波压力信号。振动激励器（2）的移动部件（22）的位移可以通过激光振动计（1）通过穿过振动激励器的光学通道射入振动激励器（2）的测量光束（15）来测量并且还可以获得标准的次声波压力。计算由次声发生室产生的标准声压的值。这样的值被用作待校准的次声传感器（4）的校准参考，以便实现次声传感器的主要校准。标准的次声传感器可以安装在次声发生室（3）的内部，标准的次声传感器的输出可以作为参考，以便进行校准，以实现次声传感器（2）的二次校准。本发明具有技术成熟，可行性高，易于实现，校准精度高等优点。

2. 发明授权

US09539616B2 Infrasound generating device based on a displacement-feedback type vibration exciter 有权
标题翻译：基于位移反馈型振动激励器的次声发生装置
公开(公告)号：US09539616B2
公开(公告)日：2017-01-10
申请号：US14130892
申请日：2012-08-16
申请人： Wen He , Longbiao He , Chunyu Wang , Yuanlai Zhou , Shushi Jia
发明人： Wen He , Longbiao He , Chunyu Wang , Yuanlai Zhou , Shushi Jia
IPC分类号： B06B1/10 , B06B1/02 , B06B1/04 , G01H3/00
CPC分类号： B06B1/10 , B06B1/0246 , B06B1/045 , B06B2201/40 , G01H3/005
摘要： The infrasound generating device based on a displacement-feedback type vibration exciter comprises a displacement-feedback type vibration exciter system, an infrasound generating chamber (3) and a laser vibrometer (1); the displacement feedback mechanism is adopted in the vibration exciter (2). The piston (31) is driven by the vibration exciter to move in a sinusoidal manner in the cavity (35) of the airtight infrasound generating chamber (3) and the standard infrasonic pressure signal with low harmonic distortion can be achieved. The displacement of the moving part (22) of the vibration exciter (2) can be measured by the laser vibrometer (1) through the measurement beam (15) injecting into the vibration exciter (2) through the optical channel running through the vibration exciter and the standard infrasonic pressure can also be obtained. The value of the standard sound pressure produced by the infrasound generating chamber is calculated. Such value is used as the calibration reference for the infrasound sensors (4) to be calibrated in order to achieve the primary calibration of the infrasound sensors. The standard infrasonic sensor can be installed inside the infrasound generating chamber (3) and the output of the standard infrasonic sensor can be used as the reference for the infrasonic sensor (4) to be calibrated in order to achieve the secondary calibration of the infrasound sensors. This invention has the advantages of technical maturity, high feasibility, easy to realize, high calibration accuracy and so on.
摘要翻译：基于位移反馈型振动激励器的次声发生装置包括位移反馈型振动激励器系统，次声发生室（3）和激光振动计（1）; 振动激励器采用位移反馈机构（2）。活塞（31）由振动激励器驱动，以正弦方式在气密次声发生室（3）的空腔（35）中移动，并且可以实现具有低谐波失真的标准次声波压力信号。振动激励器（2）的移动部件（22）的位移可以通过激光振动计（1）通过穿过振动激励器的光学通道射入振动激励器（2）的测量光束（15）来测量并且还可以获得标准的次声波压力。计算由次声发生室产生的标准声压的值。这样的值被用作待校准的次声传感器（4）的校准参考，以便实现次声传感器的主要校准。标准的次声传感器可以安装在次声发生室（3）的内部，标准的次声传感器的输出可以作为参考，以便进行校准，以实现次声传感器（2）的二次校准。本发明具有技术成熟，可行性高，易于实现，校准精度高等优点。

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