公开(公告)号：US4517845A

公开(公告)日：1985-05-21

申请号：US501630

申请日：1983-06-02

申请人： Anders P. Ransheim ,  Arne Thomsen ,  Per Holmgren

发明人： Anders P. Ransheim ,  Arne Thomsen ,  Per Holmgren

IPC分类号： G01F1/704 ,  G01P5/18 ,  G01P5/20 ,  G01F1/70

CPC分类号： G01P5/20 ,  G01F1/704 ,  G01P5/18

摘要： A method and an apparatus for measuring the flow velocity of a flow, stream or jet of molten radiation emitting material, in particular a freely falling jet of molten glass. The intensity of the radiation emitted from a limited section of the material flow is detected by means of two radiation detectors at two separate locations mutually spaced apart by a predetermined distance along the flow path of the material flow. From the output signals of the two radiation detectors all pulse-like amplitude variations having an amplitude exceeding a predetermined magnitude are discriminated. These pulse-like amplitude variations originate from randomly occurring, local, descrete, short variations in the intensity of the radiation emitted by the material flow caused by randomly occurring inhomogeneities in the material, for instance in the form of air bubbles in a jet of molten glass. The time interval between a pulse-like amplitude variation in the output signal from the upstream detector caused by an inhomogeneity in the material flow and the occurrence of a pulse-like amplitude variation in the output signal from the down-stream detector, which has been caused by the same inhomogeneity in the material flow, is measured and used as a measure of the travel time of the material flow between the detector locations for calculating the flow velocity of the material flow. Also the volumetric flow rate of the material flow can be determined by measuring also the diameter of the material flow with the aid of a linear array of photo diodes and calculating the volumetric flow rate on the basis of measured values of the flow velocity and the diameter.

摘要翻译： 用于测量熔融辐射发射材料的流动，流或射流的流速的方法和装置，特别是熔融玻璃的自由下落射流。 从材料流的有限部分发射的辐射的强度通过沿着材料流的流动路径彼此间隔开预定距离的两个分开的位置处的两个辐射检测器来检测。 从两个辐射检测器的输出信号中，鉴别出具有超过预定幅度的振幅的所有脉冲状振幅变化。 这些脉冲状幅度变化源自随机发生的，由材料中随机发生的不均匀性引起的材料流发射的辐射强度的局部，分散，短变化，例如在熔融射流中的气泡形式 玻璃。 来自上游检测器的输出信号中由材料流动不均匀性引起的脉冲振幅变化与来自下游检测器的输出信号中脉冲状振幅变化的发生之间的时间间隔 由材料流动相同的不均匀性引起的，被测量并用作测量材料流在检测器位置之间的行进时间，用于计算材料流的流速。 此外，材料流动的体积流量可以通过借助于光电二极管的线性阵列测量材料流的直径来确定，并且基于流速和直径的测量值计算体积流量 。

公开(公告)号：US4389899A

公开(公告)日：1983-06-28

申请号：US200166

申请日：1980-10-24

申请人： Gerhard Krause

发明人： Gerhard Krause

IPC分类号： G01P5/18 ,  G01P5/24 ,  G01F1/66

CPC分类号： G01P5/247 ,  G01P5/18

摘要： The speed of a flowing medium is measured by determining the transit time of sound pulses transmitted alternately in opposite directions between first and second transmitter-receivers 23, 24 spaced apart in the direction of flow. A processing circuit 18, 19, 20 evaluates the speed of flow from the difference between the transit times in the two directions. The transit times in the two directions are measured by separate but identical first and second pulse circuits 11, 11'. Each pulse circuit includes a variable frequency generator 13 the frequency of which is so regulated by the transmitted pulse from the pulse generator 12 and the pulse E received from the associated transmitter-receiver that the reciprocal of its frequency is equal to the transit time in the associated direction. Delay circuitry 21 is able to delay the trigger pulse applied to the frequency generator 13 from the pulse generator 12 so as to take account of transit time errors in the apparatus.

摘要翻译： 流动介质的速度通过确定在沿流动方向间隔开的第一和第二发射器 - 接收器23,24之间在相反方向上交替传输的声音脉冲的传播时间来测量。 处理电路18,19,20根据两个方向上的运送时间之间的差来评估流速。 两个方向的运送时间由单独但相同的第一和第二脉冲电路11,11'测量。 每个脉冲电路包括可变频率发生器13，其频率由来自脉冲发生器12的发射脉冲和从相关联的发射器 - 接收器接收的脉冲E进行调节，其频率的倒数等于 相关方向。 延迟电路21能够延迟从脉冲发生器12施加到频率发生器13的触发脉冲，以便考虑装置中的通过时间误差。

公开(公告)号：US4381679A

公开(公告)日：1983-05-03

申请号：US193298

申请日：1980-10-02

申请人： Claude Lombard

发明人： Claude Lombard

IPC分类号： F02D41/18 ,  G01F1/708 ,  G01P5/00 ,  G01P5/18 ,  G01F1/64 ,  G01F1/70

CPC分类号： F02D41/18 ,  G01F1/7088 ,  G01P5/006 ,  G01P5/18

摘要： A pick-up for measuring the velocity of a gas by ion transit time including a coupling positioned between a valve for the gas, the velocity of which is to be measured and an electrode serving to measure the transit time inside a conduit delimiting the gaseous discharge. This pick-up can be used to measure the velocity of discharge gases at the intake of the cylinders of an internal combustion motor.

摘要翻译： 用于通过离子传播时间测量气体的速度的拾取器，包括位于气体阀门之间的耦合，其中测量的速度和用于测量限定气体放电的导管内的通过时间的电极 。 该拾取器可用于测量内燃机的气缸入口处的排出气体的速度。

公开(公告)号：US3864639A

公开(公告)日：1975-02-04

申请号：US33371173

申请日：1973-02-20

申请人： KENT LTD G

发明人： MUSGRAVE GERALD ,  HAYES ALAN MICHAEL

IPC分类号： G01P5/18 ,  G01R13/34 ,  G06F7/68 ,  G06J1/00 ,  H03K5/00

CPC分类号： G01R13/34 ,  G01P5/18 ,  G06F7/68 ,  G06J1/00

摘要： A sampling frequency control circuit for controlling the frequency at which input signal means are sampled by apparatus for sampling and processing data, comprising signal generating means adapted to generate an output signal dependent upon an output signal from the said apparatus and means for supplying the output signal of the signal generating means to the said apparatus to control the sampling frequency thereof.

摘要翻译： 一种采样频率控制电路，用于控制用于采样和处理数据的装置对输入信号装置进行采样的频率，包括适于产生取决于所述装置的输出信号的输出信号的信号发生装置和用于提供输出信号的装置 的信号发生装置传送到所述装置以控制其采样频率。

公开(公告)号：US2729976A

公开(公告)日：1956-01-10

申请号：US32989953

申请日：1953-01-06

申请人： HARRY LAUB JOHN

发明人： HARRY LAUB JOHN

IPC分类号： G01F1/684 ,  G01F5/00 ,  G01P5/18 ,  H04B1/12

CPC分类号： H04B1/12 ,  F16L2101/30 ,  F28F27/00 ,  F28F2250/06 ,  G01F1/6847 ,  G01F5/00 ,  G01P5/18