会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明公开
    • Apparatus for measuring flowing gas or air stream parameters
    • 用于测量气体或空气流的参数的装置。
    • EP0057069A2
    • 1982-08-04
    • EP82300215.9
    • 1982-01-15
    • THE BABCOCK & WILCOX COMPANY
    • Nuspl, Steven Paul
    • G01P11/00G01P5/14
    • G01P11/00G01P5/14
    • A device which can determine either the velocity pressure or the velocity of a flowing gas or air stream and average same over a predetermined period of time is disclosed. The device utilizes a three-hole yaw probe or similar sensing means which is immersed in the stream to provide measurements of both static pressure differential and velocity pressure. The device includes a null threshold detector (14) which permits the processing of velocity pressure measurements only when the static pressure differential is within a pre-set range thus ensuring the proper alignment of the probe or other sensing means in the stream. A square root extractor (20) and switching means (22) are also provided permitting the measurement and averaging of the square root of the velocity pressure measurement, i.e., velocity of the stream, by the device. The velocity pressure measurements or the square root thereof are exhibited on a first digital display (28) permitting the operator to monitor the measurements as they are taken. The measurements are subsequently averaged over a predetermined period of time by an arithmetic processor (18) and the resulting average is exhibited on a second digital display (30).
    • 5. 发明授权
    • VELOCITY MEASUREMENT SYSTEM
    • 速测仪。
    • EP0454821B1
    • 1994-12-14
    • EP90916858.5
    • 1990-10-05
    • PETROFF, Alan M.FULLERTON, Larry W
    • PETROFF, Alan M.FULLERTON, Larry W
    • G01P5/00G01P11/00G01F1/66G01F1/00
    • G01S15/582G01F1/663G01P5/244
    • A sonic-type fluid flow measuring system wherein reflections or echoes of an ultrasonic acoustic emitter (10) are sensed (14) typically comprise a number of frequencies representative of a number of discrete velocities of flow in a volume of fluid. As a sample, they simply appear as a voltage plot as a function of time and wherein the time width of a given signal excursion relates to the frequency of a given signal. Thereafter, this time domain signal sample (38) is converted to a frequency domain sample whereby the presence and magnitude of each frequency component, or velocity component, is isolated, this being typically done by what is known as a Fast Fourier Transform (42). The highest frequency, velocity signal from each of a rapid succession of samples is then obtained and stored in a memory (54). The highest and lowest of these are then discarded (56), and the remaining are averaged (58) to obtain more likely representations of velocity. As the goal is to determine an average fluid velocity for a whole cross section of fluid flow, the measured peak velocity is a detected reference from which a lesser velocity, for example, 0.9, of it is chosen (60, 62). To achieve a value for volume of flow, the average velocity is then multiplied by the cross-sectional area of the containment (8) through which flow occurs.
    • 8. 发明公开
    • Verfahren zum raschen Nachführen eines Mittelwertes, vorzugsweise des arithmetischen Mittelwertes eines fast periodischen Signals
    • 一种用于平均值的快速跟踪方法中,优选的接近周期性信号的算术平均值。
    • EP0133426A2
    • 1985-02-20
    • EP84890138.5
    • 1984-07-20
    • VOEST-ALPINE AUTOMOTIVE Gesellschaft m.b.H.
    • Brasseur, Georg, Dipl.-Ing.Kasper, Ferdinand, Dipl.-Ing.
    • G01P11/00
    • G01P3/489F02D41/0097G01P11/00
    • Verfahren zum raschen Nachführen eines Mittelwertes, vorzugsweise des arithmetischen Mittelwertes, eines periodischen Signals, wie z.B. eines der momentanen Drehzahl einer Brennkraftmaschine proportionalen Signals, bei auftretenden Änderungen desselben, wobei der während einer vorgegebenen Anzahl von Perioden auftretende Verlauf des fast periodischen Signals als Signalbild gespeichert wird, während einer darauffolgenden vorgegebenen Anzahl von Perioden dieses gespeicherte Signalbild entsprechend dem Verlauf des fast periodischen Signals während dieser vorgegebenen Anzahl von Perioden nachgeführt wird, und dass sodann fortlaufend während einer vorgegebenen Anzahl von Perioden jeweils das zuletzt nachgeführte gespeicherte Signalbild gemäss dem aktuellen Verlauf des fast periodischen Signals während der vorgegebenen Anzahl von Perioden nachgeführt wird, und dass gleichzeitig mit der Aktualisierung der aktuelle Verlauf des fast periodischen Signals phasenrichtig mit dem gespeicherten Signalbild unter Erzeugung eines Abweichsignals verglichen und dieses Abweichsignal mit einem Mittelwert des fast periodischen Signals, bzw. eines diesem entsprechenden Signals, verknüpft, insbesondere linear kombiniert wird.
    • 1.平均值的快速后续插入的方法,优选的周期信号,例如算术平均值:如,成比例的信号,以内燃机的瞬时速度的,当其变形好发,其特征在于DASS 周期的预定数目的过程中发生的准周期信号的过程中被该存储信号画面的所述给定数量的期间相应地插入到所述准周期性信号的过程中时间段的随后的给定数内存储为信号图像, 周期,并且在周期的给定数量的期间的负载插入存储的信号图像被分别插入雅丁到准周期信号的实际过程期间的给定数量的期间那样THUS连续,并且在与所述现实化同时做,实际 准周期信号的过程中被相关联地存储的信号图象适当的相位关系与生产deviatio相比 n个信号,并且所述偏差信号被连接,特别是线性地或对应于它的信号的准周期信号的平均值组合。
    • 9. 发明公开
    • Apparatus for measuring flowing gas or air stream parameters
    • 用于测量流动气体或空气流动参数的装置
    • EP0057069A3
    • 1982-08-11
    • EP82300215
    • 1982-01-15
    • THE BABCOCK & WILCOX COMPANY
    • Nuspl, Steven Paul
    • G01P11/00G01P05/14
    • G01P11/00G01P5/14
    • A device which can determine either the velocity pressure or the velocity of a flowing gas or air stream and average same over a predetermined period of time is disclosed. The device utilizes a three-hole yaw probe or similar sensing means which is immersed in the stream to provide measurements of both static pressure differential and velocity pressure. The device includes a null threshold detector (14) which permits the processing of velocity pressure measurements only when the static pressure differential is within a pre-set range thus ensuring the proper alignment of the probe or other sensing means in the stream. A square root extractor (20) and switching means (22) are also provided permitting the measurement and averaging of the square root of the velocity pressure measurement, i.e., velocity of the stream, by the device. The velocity pressure measurements or the square root thereof are exhibited on a first digital display (28) permitting the operator to monitor the measurements as they are taken. The measurements are subsequently averaged over a predetermined period of time by an arithmetic processor (18) and the resulting average is exhibited on a second digital display (30).