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公开(公告)号：US4760743A
公开(公告)日：1988-08-02
申请号：US040683
申请日：1987-04-14
Applicant: Steven F. Clifford , David M. Farmer
Inventor： Steven F. Clifford , David M. Farmer
CPC classification number: G01F1/002 , G01F1/66 , G01F1/7082 , G01F1/712
Abstract: A system and method are disclosed for acoustic scintillation liquid flow measurement. Measurement is carried out by acoustic beams transmitted perpendicular to the direction the component of liquid flow to be measured, with both phase and amplitude measurements being made to enable generation of accurate speed of flow indications which are indicative of liquid flow through a broad area being monitored as opposed to a single point therein. In one realization of this invention, a pair of projectors are mounted on one side of the flow area, such as a channel to be monitored, and a pair of receivers are mounted on the other side of the flow area with pulsed acoustic signals from each of the projectors being transmitted in separate parallel paths through the liquid, such as water, to the receivers. At the receivers, electrical signals indicative of received acoustic signals in each path are complex demodulated after which the demodulated outputs are shaped, converted and then coupled to a microcomputer for evaluation and, responsive thereto, providing the indication of liquid flow speed.
Abstract translation: 公开了用于声闪烁液体流量测量的系统和方法。 测量是通过垂直于待测量的液体流量分量的方向透射的声束进行的，其中进行相位和振幅测量以使得能够产生准确的流动指示速度，其指示通过被监视的广泛区域的液体流动 而不是单点。 在本发明的一个实现中，一对投影仪安装在流动区域的一侧，例如待监视的通道，并且一对接收器安装在流动区域的另一侧，并且每个接收器具有来自每个 的投影仪通过液体（如水）以单独的平行路径传输到接收器。 在接收机处，指示每个路径中的接收到的声信号的电信号是被解调的，之后解调的输出被成形，转换，然后耦合到微型计算机进行评估，并且响应于此提供液体流速的指示。
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公开(公告)号：US4628743A
公开(公告)日：1986-12-16
申请号：US738125
申请日：1985-06-14
Applicant: Theodore E. Miller, Jr. , Hamish Small
Inventor： Theodore E. Miller, Jr. , Hamish Small
CPC classification number: G01F11/00 , G01F1/7044 , G01F11/28 , G01F13/00
Abstract: Apparatus for accurately metering liquid flow based on the injection of a brief heat pulse into the flowing stream, e.g., via a miniature thermistor, and detection of an electronic time derivative of temperature downstream with, e.g., a second microprobe thermistor. This detection triggers a subsequent heat pulse and the cycle repeats, with pulse total corresponding to elapsed liquid throughput, and pulse frequency to flow rate.
Abstract translation: 基于将短暂的热脉冲注入到流动流中，例如通过微型热敏电阻，以及利用例如第二微孔热敏电阻检测下游温度的电子时间导数的装置。 该检测触发随后的加热脉冲，循环重复，脉冲总数对应于经过的液体通过量，脉冲频率与流速。
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公开(公告)号：US4393719A
公开(公告)日：1983-07-19
申请号：US284837
申请日：1981-07-20
Applicant: Walter J. Wiegand , Robert H. Bullis
Inventor： Walter J. Wiegand , Robert H. Bullis
CPC classification number: G01F1/7088
Abstract: A flowmeter for the measurement of fluid flow employs a combination of two transit times for the passage of charged particles through a known distance under different conditions. Applications include the measurement of the air-fuel mixture in automobile engines.
Abstract translation: 用于测量流体流量的流量计采用两个运输时间的组合，用于使带电粒子在不同条件下通过已知距离。 应用包括测量汽车发动机中的空气 - 燃料混合物。
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公开(公告)号：US4263812A
公开(公告)日：1981-04-28
申请号：US93796
申请日：1979-11-13
Applicant: Willard L. Zeigner , Dwain D. Conley
Inventor： Willard L. Zeigner , Dwain D. Conley
CPC classification number: G01F1/056 , G01F15/028
Abstract: A flow sensor particularly adapted to the measurement of fuel flow to internal combustion engines, but not limited thereto, the sensor including an annular raceway intersected by a tangentially disposed inlet jet nozzle and an outlet opening disposed immediately downstream of the inlet jet nozzle and radially offset therefrom whereby the initial fluid jet passes the outlet opening before radial distribution in the raceway, then circles the raceway and discharges into the outlet; the raceway receiving a ball having a density corresponding to the fluid for continuous rotation at a speed corresponding to the speed of the fluid movement in the raceway; the raceway having a traverse optical sensor to detect rotation of the ball; a chamber having a diaphragm exposed to flow through the inlet, the chamber assuming an expanded condition during increased flow and contractable on initial minimum flow to effect momentary supplemental flow to the raceway, and aid in maintaining movement of the counter ball.
Abstract translation: 一种流量传感器，特别适用于测量向内燃机的燃料流量，但不限于此，该传感器包括与切向设置的入口喷嘴相交的环形滚道和紧邻入口喷嘴的下游设置的出口，径向偏移 由此初始流体射流在轨道径向分布之前通过出口，然后将滚道环绕并排放到出口中; 所述滚道以与所述滚道中的流体运动速度对应的速度接收具有与用于连续旋转的流体密度相对应的密度的球; 轨道具有用于检测球的旋转的横动光学传感器; 具有暴露于流过入口的隔膜的腔室，腔室在增加的流量期间呈现膨胀状态，并且可在初始最小流量上收缩以影响到轨道的瞬时补充流动，并且有助于保持反球的运动。
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公开(公告)号：US4201083A
公开(公告)日：1980-05-06
申请号：US912954
申请日：1978-06-06
Applicant: Yoshio Kurita , Yukitake Shibata
Inventor： Yoshio Kurita , Yukitake Shibata
CPC classification number: G01P5/18 , G01F1/7082
Abstract: Noise signals from a relatively moving object, such as those caused by eddies in a fluid or by protrusions and recesses or gradation on the surface of paper or an iron plate, are sensed at two or more points spaced in the direction of the motion. A difference signal is then obtained from the resulting two noise signals. The relative velocity of the object is detected from the difference signal by utilizing the autocorrelation function or the frequency spectrum of the difference signal.
Abstract translation: 来自相对运动的物体的噪声信号，例如由流体中的涡流引起的噪声信号，或者纸张表面或铁板上的突起和凹陷或灰度等，在运动方向间隔开的两个或多个点处被感测。 然后从所得到的两个噪声信号中获得差分信号。 通过利用差分信号的自相关函数或频谱从差分信号检测物体的相对速度。
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Patent Agency Ranking
公开(公告)号：US4156364A
公开(公告)日：1979-05-29
申请号：US819882
申请日：1977-07-28
Applicant: Maynard L. Hill
Inventor： Maynard L. Hill
CPC classification number: G01F1/64
Abstract: The present invention relates to a sensing device having a chamber containing positive and negative ions, wherein a fluid flow is directed into the chamber and ionized. The ionized flow passes between a plurality of conductive plates, the outputs from which can be used to indicate physical effects, such as air or gas flow and angular motion.
Abstract translation: 本发明涉及具有包含正离子和负离子的室的感测装置，其中流体流被引导到室中并电离。 电离流在多个导电板之间通过，其输出可用于指示物理效应，例如空气或气体流动和角运动。
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7.发明授权Method for measuring the flow rate of a species contained in an exhaust gas stream of a combustion process 失效用于测量包含在燃烧过程的废气流中的物质的流速的方法
公开(公告)号：US5672827A
公开(公告)日：1997-09-30
申请号：US481104
申请日：1995-06-07
Applicant: Gregory M. Jursich
Inventor： Gregory M. Jursich
CPC classification number: G01F1/704
Abstract: Provided is a method for determining gas flow rates in an exhaust gas stream from a combustion process by measuring the amounts of a tracer gas inherently present in a gas used in the combustion process at a point upstream from the exhaust gas and at a point in the exhaust gas stream itself. The flow rate is determined by comparing the concentration of the tracer gas at the two points using a mass balance. Flow/emission of a particular species in the exhaust gas is determined by using the present method upon measuring the concentration of the species in the exhaust gas. The most preferred tracer gases include helium and argon.
Abstract translation: 本发明提供了一种通过测量燃烧过程中在燃烧过程中所使用的气体中固有存在的示踪气体在废气上游的位置处的燃烧过程来确定废气流中的气体流量的方法。 废气流本身。 通过使用质量平衡比较两点处的示踪气体的浓度来确定流速。 废气中特定物质的流量/排放是通过使用本方法测定废气中物质的浓度来确定的。 最优选的示踪气体包括氦和氩。
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公开(公告)号：US4502339A
公开(公告)日：1985-03-05
申请号：US418063
申请日：1982-09-14
Applicant: Klaus Horn
Inventor： Klaus Horn
CPC classification number: G01F1/7084 , G01F1/7044
Abstract: Disclosed is an emitting or detecting element for an in-line flow measuring instrument operating on the thermopulse-injection and transit time measuring principle. The element is composed of a severally meandering resistance path spread only across a partial cross-section which is small compared to the flow cross-section and which is anchored at its mutually insulated reversing points by means of holding tapes and electrode leads into the flow-wall of the measuring instrument. The emitting or detecting element can be produced in the most diverse ways. For instance, it can be etched out of thin metal foils by lithographic methods, it can be stamped out of sheets, and also it can be made by welding resistance wires together.
Abstract translation: 公开了一种在热脉冲注入和通过时间测量原理上工作的在线流量测量仪器的发射或检测元件。 该元件由单独弯曲的阻力路径组成，仅在与流动横截面相比较小的部分横截面上扩展，并且通过将带和电极引线保持在流动横截面中而锚定在其相互绝缘的反转点处， 测量仪器的墙壁。 发射或检测元件可以以多种多样的方式制造。 例如，可以通过光刻方法从薄金属箔上蚀刻出来，可以从板上冲压出来，也可以通过将电阻丝焊接在一起而制成。
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公开(公告)号：US4257275A
公开(公告)日：1981-03-24
申请号：US72007
申请日：1979-09-04
Applicant: Yoshio Kurita , Yukitake Shibata
Inventor： Yoshio Kurita , Yukitake Shibata
CPC classification number: G01F1/7082 , G01P5/18
Abstract: Noise signals from a relatively moving object, such as those caused by eddies in a fluid or by protrusions and recesses or gradation on the surface of paper or an iron plate, are sensed at two or more points spaced in the direction of the motion. A difference signal is then obtained from the resulting two noise signals. The relative velocity of the object is detected from the difference signal by utilizing the autocorrelation function or the frequency spectrum of the difference signal.
Abstract translation: 来自相对运动的物体的噪声信号，例如由流体中的涡流引起的噪声信号，或者纸张表面或铁板上的突起和凹陷或灰度等，在运动方向间隔开的两个或多个点处被感测。 然后从所得到的两个噪声信号中获得差分信号。 通过利用差分信号的自相关函数或频谱从差分信号检测物体的相对速度。
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公开(公告)号：US4237730A
公开(公告)日：1980-12-09
申请号：US942865
申请日：1978-09-15
Applicant: Chung L. Feng
Inventor： Chung L. Feng
CPC classification number: G01F1/7084 , G01P5/18
Abstract: A fluid velocity measurement system includes a thermal generation means operated for short durations of time and disposed within a conduit suitable for guiding at least a portion of a fluid whose velocity is to be determined. Disposed downstream in the fluid guide means is at least one of a first and second thermal sensing means. The sensing means are spaced from each other. The first and second thermal sensing means are differentially coupled. The time period starting with the thermal generation means being turned on and heating a slug of fluid and extending to the generation of a differential electrical signal from the sensing means detecting the heated slug of fluid is the flight time of the heated slug of fluid. In one embodiment of the invention circuitry is provided to measure the actual flight time and divide it into a predetermined period of time resulting in a quotient which is proportional to the fluid velocity. In another embodiment the flight time is measured by a count which is divided into a predetermined count which is equivalent to a quotient also proportional to the fluid velocity. Both embodiments further include means for receiving the quotient and converting it into an appropriate signal to operate a numerical display.
Abstract translation: 流体速度测量系统包括在短时间内操作的热产生装置，并且设置在适于引导速度要被确定的流体的至少一部分的导管内。 在流体引导装置中设置在下游的是第一和第二热感测装置中的至少一个。 感测装置彼此间隔开。 第一和第二热感测装置是差分耦合的。 从热产生装置开始的时间段开始并且加热流体块并且延伸到从感测装置产生差分电信号，检测加热的流体块是加热的流体块的飞行时间。 在本发明的一个实施例中，电路被提供以测量实际的飞行时间并将其分成预定的时间段，导致与流体速度成比例的商。 在另一个实施例中，飞行时间是通过计数来测量的，该计数被划分成等同于也与流体速度成比例的商的预定计数。 两个实施例还包括用于接收商并将其转换成适当信号以操作数字显示的装置。
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