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公开(公告)号：US5164919A
公开(公告)日：1992-11-17
申请号：US802796
申请日：1991-12-06
CPC分类号： G01H3/00 , G10K11/08 , Y10S367/901
摘要： A sonar sensor comprising a substantially non-corrodible housing and a fluidic gainblock disposed therein. In addition, one or more fluid-filled laminar proportional amplifiers are arranged either in series or in parallel and contained within the fluidic gainblock. Means are provided to produce a jet within each laminar proportional amplifier, which is then modulated by incoming acoustic signals. The pressure caused by diverting the jet from its equilibrium path is proportional to, but greater than, the incoming acoustic signal. Hydrophones are used to convert the amplified acoustic signal into an electrical signal. In one embodiment, the fluidic gainblock is free-flooded and open to the liquid environment in which it is used, obviating the need for pressure equalization. In another embodiment, the fluidic gainblock is provided with filtering means for prevent the accumulation of sediment within the cavities making up the laminar proportional amplifiers. In yet another embodiment, the fluidic gainblock is a closed-system which recirculates its fluid supply, increasing the sensor's operating life and isolating the laminar proportional amplifiers therein.
摘要翻译： 声纳传感器包括基本上不可腐蚀的壳体和设置在其中的流体增益块。 此外，一个或多个流体填充的层流比例放大器被串联或并联布置并且包含在流体增益块内。 提供了在每个层流比例放大器内产生射流的装置，然后由输入的声信号进行调制。 将射流从平衡路径转移引起的压力与进入的声学信号成比例，但大于输入的声学信号。 水声器用于将放大的声信号转换为电信号。 在一个实施例中，流体增益块是自由溢出的并且对于使用它的液体环境是开放的，消除了对压力平衡的需要。 在另一个实施例中，流体增益块设置有过滤装置，用于防止沉积物堆积在构成层流比例放大器的空腔内。 在另一个实施例中，流体增益块是封闭系统，其循环其流体供应，增加传感器的使用寿命并隔离其中的层流比例放大器。
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公开(公告)号：US5076284A
公开(公告)日：1991-12-31
申请号：US607432
申请日：1990-10-23
申请人： James W. Joyce , Nassy Srour , Michael V. Scanlon , Stephen M. Tenney , George Mon , John P. Gills
发明人： James W. Joyce , Nassy Srour , Michael V. Scanlon , Stephen M. Tenney , George Mon , John P. Gills
IPC分类号： A61B7/02
CPC分类号： A61B7/023
摘要： A heart-sound monitor and esophageal stethoscope which makes use of fluidicaminar proportional amplifiers (LPAs). These LPA's are used to sense and amplify incoming acoustic pressure signals, such as heart signals. Moreover, the fluidic monitor is able to monitor a fetus heartbeat while eliminating the acoustic interference present from the mother's heartbeat. In this case, the LPA acts not only as an amplifier, but as an acoustic filter as well.
摘要翻译： 一种使用流体层流比例放大器（LPAs）的心音监视器和食管听诊器。 这些LPA用于感测和放大传入的声压信号，例如心脏信号。 此外，流体监测器能够监测胎儿心跳，同时消除母体心跳的声学干扰。 在这种情况下，LPA不仅用作放大器，而且用作声学滤波器。
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公开(公告)号：US4716935A
公开(公告)日：1988-01-05
申请号：US19847
申请日：1987-02-27
申请人： Nassy Srour , Tadeusz M. Drzewiecki
发明人： Nassy Srour , Tadeusz M. Drzewiecki
CPC分类号： F15C1/14 , Y10T137/218 , Y10T137/2224 , Y10T137/2262 , Y10T137/2273
摘要： A full wave fluidic rectifier which produces a direct fluidic output signal having an amplitude which increases from a very low level as the amplitude of an alternating fluidic input signal increases. In includes a nozzle for directing a fluid stream along the rectifier axis into a null venting outlet, two signal outlets which are symmetrically disposed in opposite sides of the null outlet, and two control signal inlets for applying the alternating input signal to the stream, deflecting the stream alternately toward the two signal outlets in proportion to the amplitude of the alternating input signal. The two signal outlets are connected by respective channels of equal fluid resistance to a common channel which serves as the rectifier output.
摘要翻译： 全波流体整流器产生直流流体输出信号，其具有随交流流体输入信号的振幅增加而从非常低的水平增加的幅度。 In包括用于将流体流沿着整流器轴线引导到空出口的喷嘴，对称地设置在零出口的相对侧的两个信号出口和用于将交替输入信号施加到流的两个控制信号入口，偏转 该流与交替输入信号的幅度成比例地交替地朝向两个信号输出端。 两个信号出口通过相同流体阻力的相应通道连接到用作整流器输出的公共通道。
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4.发明授权
公开(公告)号：US4957132A
公开(公告)日：1990-09-18
申请号：US449206
申请日：1989-12-12
申请人： Nassy Srour
发明人： Nassy Srour
CPC分类号： G10K11/04 , G10K11/08 , Y10T137/0396 , Y10T137/2174 , Y10T137/224
摘要： A method for attenuation of low frequency acoustic sound in an acoustic dctor comprising the steps of collecting incoming sound waves in the frequency range of DC to 3000 Hz so as to provide an incoming signal S.sub.I, splitting the incoming signal into two signals S.sub.1 and S.sub.2 such that signal S.sub.1 travels through a one acoustic transmission tube a distance of L.sub.1 to the first control port of a fluidic laminar proportional amplifier and signal S.sub.2 travels through a second acoustic transmission tube a distance of L.sub.2 to the second control port of the fluidic laminar proportional amplifier, adjusting the L.sub.1 distance such that the phase of input signal S.sub.1 is shifted in relation to the phase of input signal S.sub.2 when input signals S.sub.1 and S.sub.2 arrive at the control ports of the laminar proportional amplifier.
摘要翻译： 一种用于在声学检测器中衰减低频声音的方法，包括以下步骤：收集在DC至3000Hz的频率范围内的输入声波，以便提供输入信号SI，将输入信号分成两个信号S1和S2， 该信号S1通过一个声传输管道与L1流体层流比例放大器的第一控制端口的距离L1，并且信号S2穿过第二声传输管道L2到流体层流比例放大器的第二控制端口的距离 调整L1距离，使得当输入信号S1和S2到达层状比例放大器的控制端口时，输入信号S1的相位相对于输入信号S2的相位偏移。
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公开(公告)号：US4964100A
公开(公告)日：1990-10-16
申请号：US444335
申请日：1989-12-01
申请人： Nassy Srour , Michael V. Scanlon
发明人： Nassy Srour , Michael V. Scanlon
摘要： An acoustic detection device having a parabolic dish antenna for gatheringound waves and providing a first stage of amplification, an exponential horn located at the focus of the parabolic dish antenna for further acoustic amplification, a fluidic gainblock for a final stage of amplification, and acoustic earphones for listening. Either a hand operated latex bulb or a mechanical pump is used to pressurize a plastic fluid storage container that is used to supply fluid to the fluidic gainblock. Within the fluidic gainblock are four or more staged laminar proportional amplifiers having a bandwidth of 0 to 4,000 Hz.
摘要翻译： 具有用于收集声波并提供第一级放大的抛物面天线的声学检测装置，位于抛物面天线的焦点处的用于进一步声学放大的指数喇叭，用于最终放大级的流体增益块 听筒耳机 使用手动乳胶灯泡或机械泵来对用于向流体增益块供应流体的塑料流体存储容器加压。 在流体增益块内是具有0至4,000Hz带宽的四个或更多个阶段层状比例放大器。
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