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1.发明授权Vacuum-isolation vessel and method for measurement of thermal noise in microphones 失效真空隔离容器和麦克风热噪声测量方法
公开(公告)号：US5146780A
公开(公告)日：1992-09-15
申请号：US773376
申请日：1991-10-07
申请人： Allan J. Zuckerwar , Kim Chi T. Ngo
发明人： Allan J. Zuckerwar , Kim Chi T. Ngo
CPC分类号： H04R29/004 , G01H3/005
摘要： A vacuum-isolation vessel for measurement of thermal noise in microphones s an outer vessel and an inner vessel suspended within the outer vessel. A high vacuum is created between the inner and outer vessels to provide acoustical isolation. The suspension assembly coupled between the inner and outer vessels provides a substantially vibration-free environment. Thus, thermal noise in a microphone mounted within the inner vessel is accurately measured, especially at low thermal noise levels and at low frequencies.
摘要翻译： 用于测量麦克风中的热噪声的真空隔离容器具有悬挂在外容器内的外容器和内容器。 在内部和外部容器之间产生高真空以提供声学隔离。 联接在内部和外部容器之间的悬架组件提供了基本上无振动的环境。 因此，安装在内部容器内的麦克风中的热噪声被精确测量，特别是在低热噪声水平和低频下。
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公开(公告)号：US08401217B2
公开(公告)日：2013-03-19
申请号：US11780500
申请日：2007-07-20
申请人： Qamar A. Shams , Allan J. Zuckerwar
发明人： Qamar A. Shams , Allan J. Zuckerwar
IPC分类号： H04R1/20
摘要： The present invention is an extremely low frequency (ELF) microphone and acoustic measurement system capable of infrasound detection in a portable and easily deployable form factor. In one embodiment of the invention, an extremely low frequency electret microphone comprises a membrane, a backplate, and a backchamber. The backchamber is sealed to allow substantially no air exchange between the backchamber and outside the microphone. Compliance of the membrane may be less than ambient air compliance. The backplate may define a plurality of holes and a slot may be defined between an outer diameter of the backplate and an inner wall of the microphone. The locations and sizes of the holes, the size of the slot, and the volume of the backchamber may be selected such that membrane motion is substantially critically damped.
摘要翻译： 本发明是一种极低频（ELF）麦克风和声学测量系统，其能够在便携和易于展开的形状因子中进行次声检测。 在本发明的一个实施例中，极低频驻极体麦克风包括膜，背板和后室。 后室被密封以允许在后室与麦克风外部基本上不进行空气交换。 膜的符合性可能小于环境空气的一致性。 背板可以限定多个孔，并且可以在背板的外径和麦克风的内壁之间限定狭槽。 可以选择孔的位置和尺寸，槽的尺寸和后室的体积，使得膜运动基本上被临界阻尼。
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3.发明授权Method for simultaneously making a plurality of acoustic signal sensor elements 失效用于同时制造多个声信号传感器元件的方法公开(公告)号：US06954971B1
公开(公告)日：2005-10-18
申请号：US10267107
申请日：2002-09-30
CPC分类号： A61B5/4362 , A61B5/02411 , Y10S156/934 , Y10T29/42 , Y10T29/49005 , Y10T29/4913 , Y10T29/49163 , Y10T29/49169 , Y10T29/49798 , Y10T156/1082 , Y10T156/19
摘要： A fetal heart monitoring system preferably comprising a backing plate having a generally concave front surface and a generally convex back surface, and at least one sensor element attached to the concave front surface for acquiring acoustic fetal heart signals produced by a fetus within a body. The sensor element has a shape that conforms to the generally concave back surface of the backing plate. In one embodiment, the at least one sensor element comprises an inner sensor, and a plurality of outer sensors surrounding the inner sensor. The fetal heart monitoring system can further comprise a web belt, and a web belt guide movably attached to the web belt. The web belt guide being is to the convex back surface of the backing plate.
摘要翻译： 一种胎心监测系统，优选地包括具有大致凹入的前表面和大体上凸的后表面的背板，以及附接到所述凹前表面的至少一个传感器元件，用于获取由身体内的胎儿产生的声胎心脏信号。 传感器元件具有与背板的大致凹入的后表面一致的形状。 在一个实施例中，至少一个传感器元件包括内部传感器和围绕内部传感器的多个外部传感器。 胎儿心脏监测系统还可以包括腹板带和可移动地连接到腹板带的腹板带引导件。 卷筒带导向件是背衬板的凸背面。
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公开(公告)号：US4478069A
公开(公告)日：1984-10-23
申请号：US508372
申请日：1983-06-27
申请人： Allan J. Zuckerwar
发明人： Allan J. Zuckerwar
CPC分类号： E21B49/08 , E21B47/10 , G01N15/0826
摘要： Method and apparatus for making in-situ measurements of flow resistivity on the Earth's ground surface. The novel feature of the invention is two concentric cylinders, 22 and 23, inserted into the ground surface 24 with a measured pressure 21 applied to the surface inside the inner cylinder 22. The outer cylinder 23 vents a plane B-B beneath the surface to the atmosphere through an air space 28. The flow to the inner cylinder is measured (16) thereby indicating the flow from the surface to the plane beneath the surface.
摘要翻译： 用于在地球表面进行原位测量流阻的方法和装置。 本发明的新颖特征是将两个同心圆柱体22和23插入到地表24中，其中测量的压力21施加到内筒22内的表面。外筒23将表面下方的平面BB排放到大气 测量到内筒的流量（16），从而指示从表面到表面下方的平面的流动。
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公开(公告)号：US20110132095A1
公开(公告)日：2011-06-09
申请号：US12850708
申请日：2010-08-05
申请人： Allan J. Zuckerwar , Qamar A. Shams
发明人： Allan J. Zuckerwar , Qamar A. Shams
IPC分类号： G01H11/06
CPC分类号： G01H11/06 , H04R2410/07
摘要： A windscreen is configured for measuring outdoor infrasonic sound. The windscreen includes a container and a microphone. The container defines a chamber. The microphone is disposed in the chamber and can be operatively supported by the floor. The microphone is configured for detecting infrasonic sound. The container is advantageously formed from material that exhibits an acoustic impedance of between 0 and approximately 3150 times the acoustic impedance of air. A reflector plate may be disposed in the container. The reflector plate operatively can support the microphone and provides a doubling effect of infrasonic pressure at the microphone.
摘要翻译： 挡风玻璃被配置用于测量室外的次声声音。 挡风玻璃包括容器和麦克风。 容器限定一个室。 麦克风设置在腔室中并且可以由地板可操作地支撑。 麦克风配置用于检测次声声音。 该容器有利地由表现出空气的声阻抗的0至约3150倍之间的声阻抗的材料形成。 反射板可以设置在容器中。 反射板可操作地支撑麦克风，并提供麦克风下的次声压力的倍增效果。
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公开(公告)号：US5508546A
公开(公告)日：1996-04-16
申请号：US380176
申请日：1995-01-30
CPC分类号： G01J5/34
摘要： A noncontact pyroelectric infrared detector is described. A pyroelectric film that also has piezoelectric properties is held in place so that it is free to vibrate. It is electrically stimulated to vibrate at a resonance frequency. The vibrating film forms part of a balanced bridge circuit. As thermal radiation impinges on the film the pyroelectric effect causes the resonance frequency to change, thereby unbalancing the bridge circuit. A differential amplifier tracks the change in voltage across the bridge. The resulting voltage signal is further processed by a bandpass filter and a precision rectifier. The device allows for DC or static temperature measurements without the use of a mechanical chopping device.
摘要翻译： 描述了非接触式热释电红外探测器。 也具有压电特性的热电膜保持就位，使其自由振动。 电刺激以共振频率振动。 振动膜形成平衡桥式电路的一部分。 当热辐射照射在薄膜上时，热电效应会使谐振频率发生变化，从而使桥接电路失谐。 差分放大器跟踪桥上电压的变化。 所得到的电压信号由带通滤波器和精密整流器进一步处理。 该设备允许直流或静态温度测量，而不需要使用机械斩波装置。
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7.发明授权Method for making a dynamic pressure sensor and a pressure sensor made according to the method 失效根据该方法制造动态压力传感器和压力传感器的方法
公开(公告)号：US5325720A
公开(公告)日：1994-07-05
申请号：US138046
申请日：1993-10-07
CPC分类号： G01L23/12 , Y10T29/49877
摘要： A method for providing a perfectly flat top with a sharp edge on a dynamic pressure sensor using a cup-shaped stretched membrane as a sensing element. First, metal is deposited on the membrane and surrounding areas. Next, the side wall of the pressure sensor with the deposited metal is machined to a predetermined size. Finally, deposited metal is removed from the top of the membrane in small steps, by machining or lapping while the pressure sensor is mounted in a jig or the wall of a test object, until the true top surface of the membrane appears. A thin indicator layer having a color contrasting with the color of the membrane may be applied to the top of the membrane before metal is deposited to facilitate the determination of when to stop metal removal from the top surface of the membrane.
摘要翻译： 一种使用杯形拉伸膜作为感测元件在动态压力传感器上提供具有锋利边缘的完全平坦的顶部的方法。 首先，金属沉积在膜和周围区域。 接下来，将具有沉积金属的压力传感器的侧壁加工成预定尺寸。 最后，将沉积的金属从薄膜的顶部以小的步骤，通过机械加工或研磨，同时将压力传感器安装在夹具或测试对象的壁中，直到膜的真实顶部表面出现。 在沉积金属之前，可以将具有与膜颜色对比的颜色的薄指示剂层施加到膜的顶部，以便于确定何时停止从膜的顶表面去除金属。
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公开(公告)号：US5140992A
公开(公告)日：1992-08-25
申请号：US552670
申请日：1990-07-16
IPC分类号： A61B5/024
CPC分类号： A61B5/6831 , A61B5/02411 , A61B5/4362
摘要： The invention is an ambulatory, passive sensor for use in a fetal monitoring system. The invention incorporates piezoelectric polymer film combined with a metallic mounting plate fastened to a belt and electrically connected to a signal processing unit by means of a shielded cable. The purpose of the sensor is to receive pressure pulses emitted from a fetus inside an expectant mother and to provide means for filtering out pressure pulses arising from other sources, such as the maternal heart.
摘要翻译： 本发明是用于胎儿监测系统的移动式无源传感器。 本发明结合了压电聚合物膜，其与固定在皮带上的金属安装板结合，并通过屏蔽电缆与信号处理单元电连接。 传感器的目的是接收从预期母亲内部的胎儿发出的压力脉冲，并提供用于过滤由诸如母亲心脏的其他来源产生的压力脉冲的装置。
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公开(公告)号：US08671763B2
公开(公告)日：2014-03-18
申请号：US12850708
申请日：2010-08-05
申请人： Allan J. Zuckerwar , Qamar A. Shams
发明人： Allan J. Zuckerwar , Qamar A. Shams
IPC分类号： G01H11/06
CPC分类号： G01H11/06 , H04R2410/07
摘要： A windscreen is configured for measuring outdoor infrasonic sound. The windscreen includes a container and a microphone. The container defines a chamber. The microphone is disposed in the chamber and can be operatively supported by the floor. The microphone is configured for detecting infrasonic sound. The container is advantageously formed from material that exhibits an acoustic impedance of between 0 and approximately 3150 times the acoustic impedance of air. A reflector plate may be disposed in the container. The reflector plate operatively can support the microphone and provides a doubling effect of infrasonic pressure at the microphone.
摘要翻译： 挡风玻璃被配置用于测量室外的次声声音。 挡风玻璃包括容器和麦克风。 容器限定一个室。 麦克风设置在腔室中并且可以由地板可操作地支撑。 麦克风配置用于检测次声声音。 该容器有利地由表现出空气的声阻抗的0至约3150倍之间的声阻抗的材料形成。 反射板可以设置在容器中。 反射板可操作地支撑麦克风，并提供麦克风下的次声压力的倍增效果。
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公开(公告)号：US06749573B2
公开(公告)日：2004-06-15
申请号：US09784414
申请日：2001-02-13
IPC分类号： A61B700
CPC分类号： A61B5/4362 , A61B5/02411 , Y10S156/934 , Y10T29/42 , Y10T29/49005 , Y10T29/4913 , Y10T29/49163 , Y10T29/49169 , Y10T29/49798 , Y10T156/1082 , Y10T156/19
摘要： A fetal heart monitoring system preferably comprising a backing plate having a generally concave front surface and a generally convex back surface, and at least one sensor element attached to the concave front surface for acquiring acoustic fetal heart signals produced by a fetus within a body. The sensor element has a shape that conforms to the generally concave back surface of the backing plate. In one embodiment, the at least one sensor element comprises an inner sensor, and a plurality of outer sensors surrounding the inner sensor. The fetal heart monitoring system can further comprise a web belt, and a web belt guide movably attached to the web belt. The web belt guide being is to the convex back surface of the backing plate.
摘要翻译： 一种胎心监测系统，优选地包括具有大致凹入的前表面和大体上凸的后表面的背板，以及附接到所述凹前表面的至少一个传感器元件，用于获取由身体内的胎儿产生的声胎心脏信号。 传感器元件具有与背板的大致凹入的后表面一致的形状。 在一个实施例中，至少一个传感器元件包括内部传感器和围绕内部传感器的多个外部传感器。 胎儿心脏监测系统还可以包括腹板带和可移动地连接到腹板带的腹板带引导件。 卷筒带导向件是背衬板的凸背面。
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