公开(公告)号：US06508134B1

公开(公告)日：2003-01-21

申请号：US09387986

申请日：1999-09-01

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01F166

CPC分类号： G01F5/00 ,  G01F1/662

摘要： A transit time ultrasonic flow sensor uses a pair of transducers that alternate between transmitting and receiving operational states, the operating frequency of a reference oscillator driving the transmitting transducer is controllably varied so as to maintain a constant phase relationship between the transmitted and received signals. A second oscillator is slaved, in frequency to the reference oscillator just before the alternation in operational states takes place and retains that frequency for most of the next operational state, and so forth. Fluid flowing along a line between the two transducers causes one of the two oscillators to swing to a higher frequency, and the other to swing low with respect to each other. A difference frequency between the two oscillators is detected and used as a basis for calculating the rate of fluid flow. In preferred versions of the invention the pair of transducers and an acoustic reflector are configured as a probe that can be inserted into the flowing fluid.

摘要翻译： 运输时间超声波流量传感器使用在发送和接收操作状态之间交替的一对换能器，驱动发送换能器的参考振荡器的工作频率可控地改变，以便保持发送和接收信号之间的恒定的相位关系。 在操作状态的交替发生之前，第二个振荡器被频移到参考振荡器，并在下一个操作状态的大部分时间内保持该频率，等等。 沿着两个换能器之间的线路流动的流体使得两个振荡器中的一个摆动到更高的频率，而另一个摆动相对于彼此的低。 检测两个振荡器之间的差频，并将其用作计算流体流量的基础。 在本发明的优选版本中，成对的换能器和声反射器被配置为可插入流动流体中的探针。

公开(公告)号：US06431011B1

公开(公告)日：2002-08-13

申请号：US09820057

申请日：2001-03-28

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01F158

CPC分类号： G01F1/584 ,  G01F1/586 ,  G01F1/588 ,  G01F1/60

摘要： A magnetic flow sensor is configured to compensate for electrode related drifts by connecting the electrodes either to each other or to a reference voltage during most of an operating duty cycle. Some versions of the invention use multiple sensing heads in a single sensor to increase the magnitude of the flow related signal, either by interconnecting ones of the electrodes or by externally summing the signals. Additionally, some versions of the sensor can be used with weakly electrically conducting flow conduits, such as blood vessels.

摘要翻译： 磁流量传感器被配置为通过在大多数工作占空比期间将电极彼此连接或参考电压来补偿电极相关漂移。 本发明的一些版本在单个传感器中使用多个感测头来通过互连电极中的一个或通过对信号进行外部求和来增加流量相关信号的幅度。 此外，一些版本的传感器可以与弱导电流动管道（如血管）一起使用。

公开(公告)号：US4890499A

公开(公告)日：1990-01-02

申请号：US119299

申请日：1987-11-06

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01F1/05

CPC分类号： G01F1/056

摘要： The disclosed orbital ball flow detectors have an exposed ball-sensing electrode near or along the path of the orbiting ball, and a return electrode. The ball's cross-section is much larger than the sensing electrode, which is closely over-shadowed by the ball as it orbits past the electrode. Unusually large signals are provided when the ball is of insulation and the flow to be monitored exhibits some electrical conductivity. Where the ball orbits along a conductive track and is of metal, it acts as a switch when oribiting past the sensing electrode.

摘要翻译： 所公开的轨道球流量检测器具有靠近或沿着轨道球的路径的暴露的球感测电极和返回电极。 球的横截面比感测电极大得多，当球绕轨道穿过电极时，感测电极被球体紧密地遮蔽。 当球体绝缘时，提供非常大的信号，并且待监测的流量表现出一定的导电性。 当球沿着导电轨道轨道并且是金属时，当穿过感测电极时，它起到开关的作用。

公开(公告)号：US4790195A

公开(公告)日：1988-12-13

申请号：US926108

申请日：1986-11-03

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01F1/10

CPC分类号： G01F1/10

摘要： The disclosed apparatus for sensing the flow of liquid along a passage includes a turbine-type rotor formed of high-resistivity insulation and supported coaxially in the passage. The rotor has spiral vanes distributed about a core. A stator upstream of the rotor provides a spiralling flow pattern in the zone of the rotor. The stator has vanes that spiral in the same direction as the rotor's vanes but at a lower pitch. An electrical sensor provides a varying signal representing the rotation of the rotor. The output signal waves are accurately proportional to the flow over an unusually wide range of flow rates. The electrical sensor includes electrodes exposed to the flow passage, a sensing electrode that is wider than the thickness of a rotor vane and a metal pipe that serves as a companion electrode. Successive pairs of rotor vanes span the sensing electrode at intervals as the rotor turns, periodically acting as barriers that reduce conduction through the liquid in the passage.

摘要翻译： 所公开的用于感测沿着通道的液体流动的装置包括由高电阻绝缘体形成的涡轮型转子，并且在通道中同轴地支撑。 转子具有围绕芯分布的螺旋叶片。 转子上游的定子在转子的区域中提供螺旋流动模式。 定子具有沿与转子叶片相同的方向螺旋的叶片，但是具有较低的间距。 电传感器提供表示转子旋转的变化信号。 输出信号波与异常宽的流速范围内的流量精确成比例。 电传感器包括暴露于流动通道的电极，比转子叶片的厚度更宽的感测电极和用作伴随电极的金属管。 随着转子转动，连续成对的转子叶片跨越传感电极，周期性地作为阻挡通道中通过液体的传导的屏障。

公开(公告)号：US4618266A

公开(公告)日：1986-10-21

申请号：US501009

申请日：1983-06-03

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01K17/06

CPC分类号： G01K17/06

摘要： Energy transmitted to a load in a fluid medium is measured utilizing a probe having an elongate heat transmitter that includes a sensing tip at one end, a heat exchanger at its opposite end, a thermal impedance forming at least a segment of the heat transmitter, and temperature sensors spaced apart along the impedance. The temperature of the sensing tip is maintained different from that of the sensed fluid. A read-out is responsive to the temperature sensors and it is calibrated in terms of the energy content of the fluid flowing in the sensed passage. Corrections for various factors of error are incorporated in the read-out. A relative simple yet reasonably accurate measure is made of the energy in steam, where the heat exchanger of the probe is a passive heat dissipator. By controlling the heat exchanger so as to maintain the sensing tip at the temperature of the fluid in a reference condition, measurement of the energy content of the fluid in another condition is made, this being applicable not only to steam systems but also to forced air heating and cooling systems as well as circulating liquid heating and cooling systems.

摘要翻译： 传输到流体介质中的负载的能量利用具有细长热传递器的探针来测量，所述探头具有细长的热传递器，其包括在一端的感测尖端，在其相对端的热交换器，形成热传递器的至少一部分的热阻抗，以及 温度传感器沿阻抗间隔开。 感测尖端的温度与感测流体的温度保持不同。 读出响应于温度传感器，并且根据在感测通道中流动的流体的能量含量进行校准。 读取中包含各种误差因素的修正。 一个相对简单但相当准确的测量方法就是蒸汽中的能量，其中探头的热交换器是被动散热器。 通过控制热交换器以将感测尖端保持在参考条件下的流体温度，进行另一条件下的流体的能量含量的测量，这不仅适用于蒸汽系统，而且也适用于强制空气 加热和冷却系统以及循环液体加热和冷却系统。

公开(公告)号：US4612806A

公开(公告)日：1986-09-23

申请号：US667766

申请日：1984-11-02

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01F1/05 ,  G01F1/32

CPC分类号： G01F1/056

摘要： The disclosed orbital ball flow detectors include a photoelectric ball sensor applicable to both axial-flow and toroidal forms, wherein reflection occurs at the ball. Also disclosed are photoelectric ball sensors of both the transmission and reflection types in which the light path extends through pellucid material of the passage means that forms a track against which the ball bears as it orbits. There may be a swirl in the flow pattern of the fluid; and then multiple pairs of orbital ball flow detectors, each carrying part of the total flow and having mutually opposite orbit directions, provide improved accuracy.

摘要翻译： 所公开的轨道球流量检测器包括适用于轴向流动和环形形状的光电球传感器，其中在球处发生反射。 还公开了传输和反射类型的光电球传感器，其中光路延伸穿过通道装置的透明材料，通道装置形成轨道，轨道轨道运动时球承载。 流体的流动模式可能会有漩涡; 然后多对轨道球流量检测器，每个承载总流量的一部分并具有相互相反的轨道方向，提供了提高的精度。

公开(公告)号：US4403871A

公开(公告)日：1983-09-13

申请号：US421053

申请日：1982-09-22

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01F1/86 ,  G01K17/16 ,  G01F19/00

CPC分类号： G01K17/16 ,  G01F1/86

摘要： The disclosed apparatus includes a heat meter and a flow meter. The heat meter includes means for delivering trains of pulses to a heat register, the pulses per train being proportional to the temperature difference between fluid inlet and outlet passages of heat exchange means, and the recurrence rate of the pulse trains being determined by a flow sensor. A visual indicator of the pulse trains facilitates zero-difference adjustment of the temperature sensors when they are both at the same temperature. Compensation for variations in the specific heat of the fluid and temperature-related inaccuracy of the flow sensor is effected by non-linear frequency adjustment of an oscillator that generates the pulses. In a flow meter (omitting the temperature-difference circuit) compensation for temperature-related inaccuracy of flow-sensors is effected correspondingly.

公开(公告)号：US4304127A

公开(公告)日：1981-12-08

申请号：US53364

申请日：1979-06-29

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01K17/10

CPC分类号： G01K17/10

摘要： Apparatus and a method are described for measuring heating and/or cooling of air or other fluid that occurs between an inlet and an outlet, one being a low-temperature passage and the other being a high-temperature passage. Heat is supplied to a temperature sensor in the low-temperature passages sufficient to raise that sensor to the temperature sensed in the high-temperature passage where the sensor of the low-temperature passage is cooled both by the fluid temperature and its mass-flow rate, and the supplied heat is measured.

摘要翻译： 描述了用于测量在入口和出口之间发生的空气或其它流体的加热和/或冷却的装置和方法，一个是低温通道，另一个是高温通道。 向低温通道中的温度传感器供应热量，足以将传感器升高到高温通道中感测到的温度，其中低温通道的传感器由流体温度和质量流量冷却 ，并测量供给的热量。

公开(公告)号：US4275291A

公开(公告)日：1981-06-23

申请号：US935562

申请日：1978-08-21

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01F1/115 ,  G01F1/06

CPC分类号： G01F1/115

摘要： The disclosed rotation sensors involve a first poled magnetic device that rotates with the part whose rotation is to be sensed, a second poled magnetic device coaxial with the first, magnetically induced to rotate in unison with the first magnetic device, and a sensing element disposed between the circular paths of the poles of the magnetic devices. In one form, the sensing element is a Hall-effect device. In a second form, the sensing element is a winding that provides both a rotation signal and electrical energization for local circuit equipment responsive to the signal.

摘要翻译： 所公开的旋转传感器包括与要旋转的部分一起旋转的第一极化磁性装置，与第一极性同轴的第二极化磁性装置，磁性地与第一磁性装置一起旋转，以及传感元件， 磁性装置的极点的圆形路径。 在一种形式中，感测元件是霍尔效应器件。 在第二种形式中，感测元件是响应于该信号而为本地电路设备提供旋转信号和电通电的绕组。

公开(公告)号：US20200309577A1

公开(公告)日：2020-10-01

申请号：US16795715

申请日：2020-02-20

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01F1/58

摘要： A magnetic flowmeter has multiple pairs of electrodes spaced apart along respective lines perpendicular to both a flow direction and a magnetic field. Respective flow-induced differential voltages from each pairing of electrodes are simultaneously summed to yield a measure of a flow rate. The summing arrangement increases the output signal proportionately to the number of electrode pairs, but increases the associated composite noise output proportionately to the square root of the number of those pairs.