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公开(公告)号：US5544531A
公开(公告)日：1996-08-13
申请号：US370246
申请日：1995-01-09
申请人： Donald B. Heckman
发明人： Donald B. Heckman
CPC分类号： G01F1/002 , G01F15/024
摘要： A method and apparatus for measuring fluid flow is characterized by compensating for temperature variations in the fluid level pressure transducer. The transducer is operated at a plurality of different combinations of pressure and temperature, and the drive and output voltages of the transducer are measured at each combination. A plurality of temperature coefficients are derived from the measured voltage and entered into a data logger for use in calculating flow.
摘要翻译： 用于测量流体流动的方法和装置的特征在于补偿液位压力传感器中的温度变化。 传感器以多种压力和温度的不同组合操作，并且在每个组合时测量换能器的驱动和输出电压。 从测量的电压导出多个温度系数，并输入到用于计算流量的数据记录器。
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公开(公告)号：US5644088A
公开(公告)日：1997-07-01
申请号：US508102
申请日：1995-07-27
申请人： Donald B. Heckman
发明人： Donald B. Heckman
CPC分类号： G01L19/0038 , G01F1/002 , G01F23/162 , G01F23/18 , G01L19/149
摘要： An improved flowmeter sensor for measuring the level of liquid flowing in a conduit, pipe or open channel, characterized by an initially air-filled pressure transmitting passage which affords communication between a pressure port contained in the bottom of the sensor body, and a pressure transducer contained in the sensor body. The passage includes a vertical portion communicating at its lower end with the pressure port, and a horizontal portion connected with the transducer, whereby hydraulic pressure forces liquid into the passage to compress the air therein and thereby exert on the pressure transducer a pressure corresponding to the level of liquid in the conduit. The cross-sectional area and high surface energy of the material used to form the passage prevent liquid in the passage from migrating to the pressure transducer.
摘要翻译： 一种用于测量在导管，管道或开放通道中流动的液体水平的改进的流量计传感器，其特征在于，初始空气填充的压力传递通道，其提供包含在传感器主体底部的压力端口与压力传感器 包含在传感器主体中。 通道包括在其下端与压力端口连通的垂直部分和与换能器连接的水平部分，由此液压迫使液体进入通道以在其中压缩空气，从而在压力传感器上施加对应于 导管中的液体水平。 用于形成通道的材料的横截面积和高表面能阻止通道中的液体迁移到压力传感器。
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公开(公告)号：US4156228A
公开(公告)日：1979-05-22
申请号：US819519
申请日：1977-07-26
申请人： Donald B. Heckman
发明人： Donald B. Heckman
CPC分类号： G10K11/002 , G01S1/72
摘要： An acoustic transducer for use under water is constructed in such a manner that when out of the water the transducer element is substantially isolated from vibrations that otherwise would be coupled thereto from the mounting base on which it is mounted.
摘要翻译： 在水下使用的声换能器以这样一种方式构造，使得当水从外面传感器元件基本上与其它将从其安装在其上的安装基座连接到的振动隔离。
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4.发明授权
公开(公告)号：US5811688A
公开(公告)日：1998-09-22
申请号：US787094
申请日：1997-01-22
IPC分类号： E03F7/00 , G01F1/00 , G01F1/66 , G01F23/284 , G01F23/292 , G01F23/296 , G01P5/24
CPC分类号： G01F23/296 , E03F7/00 , G01F1/002 , G01F1/661 , G01F1/663 , G01F23/284 , G01F23/292 , G01P5/241
摘要： A flowmeter utilizing velocity at the surface of a fluid and lookdown level sensors is mounted within a manhole without requiring entry into the manhole by the installer. The velocity and level sensors generate first and second energy signal beams which are directed toward the same vicinity of the fluid surface which reflects the beams back to the sensors surface velocity signal representative of the velocity of scatters on the fluid surface is produced from the Doppler frequency shift between the directed and reflected first beam. This signal is modified to produce a mean velocity signal. A level signal is produced by determining the air space between the sensor and the fluid surface from the directed and reflected second beam and relating changes in the air space to changes in fluid level in accordance with the configuration of the pipe. Fluid flow can be calculated from the mean velocity and fluid level signals.
摘要翻译： 在流体和俯视液位传感器的表面利用速度的流量计安装在人孔内，而不需要安装者进入人孔。 速度和液位传感器产生指向流体表面相同附近的第一和第二能量信号束，其将光束反射回传感器表面速度信号，其代表流体表面上的散射速度由多普勒频率 定向和反射的第一光束之间的位移。 该信号被修改以产生平均速度信号。 通过从导向和反射的第二光束确定传感器和流体表面之间的空气空间并根据管道的构造将空气空间的变化与流体水平的变化相关联来产生电平信号。 流体流量可以从平均速度和液位信号计算。
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公开(公告)号：US5421211A
公开(公告)日：1995-06-06
申请号：US321023
申请日：1994-10-06
申请人： Donald B. Heckman
发明人： Donald B. Heckman
摘要： A liquid flowmeter and method for determining the velocity of flow of fluid in a conduit, including a sensor adapted for mounting in the bottom of the conduit, and including acoustic energy transmitting and receiving devices, an in-phase reflected Doppler energy signal detector connected with the receiving device, an anti-alias low pass filter for producing from the in-phase reflected energy a filtered signal, a digital-to-analog converter for digitalizing the in-phase signal to produce a sampled array, an accumulator for storing a first number (M) of mean zeroed power spectra from the sampled array, a zeroing device for zeroing a second number (K) of the initial samples of the power spectra, thereby to produce a first modified spectra, a median filter of rank R for filtering the first modified spectra to produce a second modified spectra, a limiting device for limiting the second modified spectra to produce samples limited to the upper portion of a range of amplitudes, thereby to produce a third modified spectra, a device for determining the high-frequency edge of the third modified spectra, a first converting device operable when the third modified spectra have a wide band width for producing as a multiple of the high-frequency edge an estimate of mean fluid velocity, and a second converting device operable when the third modified spectra have a narrow band width for producing as a function of the spectral peak an estimate of mean fluid velocity.
摘要翻译： 一种用于确定管道中的流体流速的液体流量计和方法，包括适于安装在导管底部的传感器，并且包括声能发射和接收装置，一个同相反射的多普勒能量信号检测器，与 接收装置，用于从同相反射能量产生滤波信号的抗混叠低通滤波器，用于数字化同相信号以产生采样阵列的数模转换器，用于存储第一 来自采样阵列的平均归零功率谱的数量（M），用于归零功率谱的初始样本的第二数量（K）的归零装置，从而产生第一修改光谱，用于滤波的等级R的中值滤波器 第一修改光谱以产生第二修改光谱，用于限制第二修改光谱以产生限于幅度范围的上部的样本的限制装置，从而产生 第三修改光谱，用于确定第三修改光谱的高频边缘的设备，当第三修改光谱具有用于产生高频边缘的倍数的宽带宽时可操作的第一转换设备， 平均流体速度，以及第二转换装置，当第三修改的光谱具有窄带宽以便产生平均流体速度的估计值作为光谱峰值的函数时可操作。
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