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1. 发明授权

US07038780B2 Method for sensing acoustic energy 失效
标题翻译：感应声能的方法
公开(公告)号：US07038780B2
公开(公告)日：2006-05-02
申请号：US10177790
申请日：2002-06-20
申请人： Joseph Lawrence Chovan , Donald William Winfield , Lawrence Richard Snowman , William Arthur Penn , Walter Beeman
发明人： Joseph Lawrence Chovan , Donald William Winfield , Lawrence Richard Snowman , William Arthur Penn , Walter Beeman
IPC分类号： G01N21/00
CPC分类号： H04B11/00 , G01H9/00
摘要： A method for sensing acoustic energy as the energy passes from a more dense to a less dense medium while compensating for energy level loses that may have occurred along the acoustic path of the acoustic energy. The method may be used to replace a multi-sensor system for detecting acoustic energy. The method includes permitting the acoustic energy to progress from a first transmitting medium to a second transmitting medium, the first transmitting medium being more dense than the second transmitting medium and the first medium being contiguous with the second medium along a predetermined interface; disposing an optical sensor in the second medium so that at least a portion of the acoustic energy imposes a modulation proportional to the frequency components of the acoustic energy on a sampling light emitted by the optical sensor; and detecting at least a portion of the sampling light having modulation in response to the portion of the acoustic energy.
摘要翻译：当能量从较密集的介质传递到较不密集的介质同时补偿可能沿着声能的声学路径发生的能量损失时，用于感测声能的方法。该方法可以用于替换用于检测声能的多传感器系统。该方法包括允许声能从第一传输介质进入第二传输介质，第一传输介质比第二传输介质更致密，第一介质沿预定界面与第二介质邻接; 将光学传感器设置在第二介质中，使得至少一部分声能在由光学传感器发射的采样光上施加与声能的频率分量成比例的调制; 以及响应于声能的一部分，检测具有调制的采样光的至少一部分。

2. 发明授权

US06924895B2 Sensor for optically sensing air borne acoustic waves 失效
标题翻译：用于光学感测空气声波的传感器
公开(公告)号：US06924895B2
公开(公告)日：2005-08-02
申请号：US10632307
申请日：2003-08-01
申请人： Joseph Lawrence Chovan , Martin Francis Lowry , Evelyn Hope Monsay , William Arthur Penn , William Pattee Whyland , Lawrence Richard Snowman
发明人： Joseph Lawrence Chovan , Martin Francis Lowry , Evelyn Hope Monsay , William Arthur Penn , William Pattee Whyland , Lawrence Richard Snowman
IPC分类号： G01B9/02 , G08B13/16 , G08B13/187 , G01N29/04
CPC分类号： G01H9/00 , G01B9/02002 , G01B9/02024 , G01N2291/02872 , G08B13/1609 , G08B13/187
摘要： The present invention relates to an optical sensor of air borne acoustic waves. The sensor comprises means for producing mutually coherent optical sampling and reference beams, which may be combined to form an intermediate frequency carrier, the sampling beam being exposed to the acoustic field, in which acoustic wave induced density variations occur. These density variations produce a variation in the index of refraction and thereupon a phase modulation of the sampling beam. This phase modulation may be recovered by an optical detector and a phase detector as an electrical signal representative of the acoustic signal.The invention has application to security systems.
摘要翻译：本发明涉及一种空气声波的光学传感器。该传感器包括用于产生相互相干的光采样和参考光束的装置，其可以被组合以形成中频载波，采样光束暴露于声波引起的密度变化的声场。这些密度变化导致折射率的变化，并且随后采样光束的相位调制。该相位调制可以由光学检测器和相位检测器作为代表声学信号的电信号来恢复。本发明适用于安全系统。

3. 发明授权

US06714306B1 Sensor for optically sensing air borne acoustic waves 失效
标题翻译：用于光学感测空气声波的传感器
公开(公告)号：US06714306B1
公开(公告)日：2004-03-30
申请号：US06864481
申请日：1986-05-19
申请人： Joseph Lawrence Chovan , Martin Francis Lowry , Evelyn Hope Monsay , William Arthur Penn , William Pattee Whyland , Lawrence Richard Snowman
发明人： Joseph Lawrence Chovan , Martin Francis Lowry , Evelyn Hope Monsay , William Arthur Penn , William Pattee Whyland , Lawrence Richard Snowman
IPC分类号： G01B902
CPC分类号： G01H9/00 , G01B9/02002 , G01B9/02024 , G01N2291/02872 , G08B13/1609 , G08B13/187
摘要： The present invention relates to an optical sensor of air borne acoustic waves. The sensor comprises means for producing mutually coherent optical sampling and reference beams, which may be combined to form an intermediate frequency carrier, the sampling beam being exposed to the acoustic field, in which acoustic wave induced density variations occur. These density variations produce a variation in the index of refraction and thereupon a phase modulation of the sampling beam. This phase modulation may be recovered by an optical detector and a phase detector as an electrical signal representative of the acoustic signal. The invention has application to security systems.
摘要翻译：本发明涉及一种空气声波的光学传感器。该传感器包括用于产生相互相干的光采样和参考光束的装置，其可以被组合以形成中频载波，采样光束暴露于声波引起的密度变化的声场。这些密度变化导致折射率的变化，并且随后采样光束的相位调制。该相位调制可以由光学检测器和相位检测器作为代表声学信号的电信号来恢复。本发明适用于安全系统。

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