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公开(公告)号：US20210283329A1
公开(公告)日：2021-09-16
申请号：US17185074
申请日：2021-02-25
发明人： Colin H. Murphy , Dean Kamen , John M. Kerwin , Larry B. Gray
摘要： A method for controlling a device using a shape-memory alloy wire is disclosed. The method includes determining an ontime for the shape-memory alloy wire based on a target volume to be pumped by a pump plunger, determining the temperature of the shape-memory alloy wire and adjusting the ontime based on the temperature of the shape-memory alloy wire.
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公开(公告)号：US10458829B2
公开(公告)日：2019-10-29
申请号：US15793745
申请日：2017-10-25
申请人： Jabil Inc.
发明人： Jamie Evans , Stephen McSorley
摘要： A system for estimating fluid flow in a system including a pump and a fluid vessel operatively coupled to the pump via a conduit is described herein. The system comprises an accelerometer affixed to an exterior surface of the conduit, wherein the accelerometer is configured to generate signals representing physical movement of the conduit, and wherein the signals are suitable for estimating fluid flow in the conduit.
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公开(公告)号：US10173881B2
公开(公告)日：2019-01-08
申请号：US15345016
申请日：2016-11-07
发明人： Russell H. Beavis , Benjamin W. Jones , John M. Kerwin , Larry B. Gray , Casey P. Manning , Felix Winkler , Robert A. Charles
IPC分类号： B67D1/00 , B67D1/08 , G01F1/56 , G05D7/06 , G01F3/10 , G01F3/20 , G01F23/00 , G01F1/34 , G01F1/66
摘要： A flow sensor includes a fluid chamber configured to receive a fluid. A diaphragm assembly is configured to be displaced whenever the fluid within the fluid chamber is displaced. A transducer assembly is configured to monitor the displacement of the diaphragm assembly and generate a signal based, at least in part, upon the quantity of fluid displaced within the fluid chamber.
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公开(公告)号：US09222819B2
公开(公告)日：2015-12-29
申请号：US13487000
申请日：2012-06-01
申请人： Christian A. Gutierrez , Ellis Meng
发明人： Christian A. Gutierrez , Ellis Meng
CPC分类号： G01F3/227 , B67D1/0437 , B67D1/0855 , G01F3/20 , G01F11/086 , G01M3/16 , G01M3/40
摘要： Electrochemical impedance may be used for accurate and real-time tracking and control of fluid delivery from fluid-filled chambers, such as from drug delivery devices. At least two measurement electrodes may be placed within the chamber in contact with the fluid to be sensed. Application of a small alternating current using these electrodes through the fluid/drug may allow measurement of electrochemical impedance. Volumetric changes of the compressible chamber due to movement of at least one surface within the compressible chamber (such as an actuating bellows or flexible diaphragm), may induce changes in the measured electrochemical impedance. Measuring these changes may allow for tracking of ejected liquid volumes from the compressible chamber. By taking the time-derivative of this signal, the rate of volume change can be tracked and therefore the rate of ejected fluid (flow rate) can be deduced.
摘要翻译： 电化学阻抗可用于精确和实时跟踪和控制从填充液体的腔室（例如来自药物输送装置）的流体输送。 至少两个测量电极可以放置在室内与要感测的流体接触。 使用这些电极通过流体/药物施加小的交流电流可以测量电化学阻抗。 由于可压缩室内的至少一个表面的移动（例如致动波纹管或柔性隔膜），可压缩室的体积变化可能引起测量的电化学阻抗的变化。 测量这些变化可以允许跟踪来自可压缩室的喷射液体体积。 通过采用该信号的时间导数，可以跟踪体积变化率，因此可以推导出喷射流体的速率（流量）。
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公开(公告)号：US06923055B2
公开(公告)日：2005-08-02
申请号：US10802493
申请日：2004-03-16
申请人： James B. Klassen
发明人： James B. Klassen
摘要： A flow meter comprising a rotor assembly that is comprised of two rotors having axis of rotation offset from collinear where the two rotors define operating chambers that changing volume with respects to rotation and allow fluid to pass from an inlet port to an outlet port when the number of rotation is indicated the volumetric flow therethrough.
摘要翻译： 一种流量计，其包括转子组件，该转子组件包括两个转子，该转子具有偏离共线的旋转轴线，其中两个转子限定了相对于旋转而改变容积的操作室，并且当数量 的旋转表示通过其中的体积流量。
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公开(公告)号：US20050087025A1
公开(公告)日：2005-04-28
申请号：US10980092
申请日：2004-11-03
摘要： An ultrasonic sensor, including methods of using and installing same, the sensor having a pair of ultrasound transducers adapted to be inserted in, and being able to perform at, a single site of introduction into a duct. The ultrasonic sensor measures a forward ultrasonic path transit time and a second reverse ultrasonic path transit time of ultrasound signals propagating in a fluid, the arrangement being such that a comparison of the signal associated with ultrasound travel in one direction with the signal associated with ultrasound travel in the opposite direction enables the flow rate of the fluid in the duct to be determined. The sensor may utilize a reflecting surface on the duct and a reflective surface of an ultrasonic sensor end cap to provide forward and reverse ultrasonic W-shaped paths. In addition, the ultrasonic sensor may be used to measure the temperature, viscosity, and cavitation effects of a fluid.
摘要翻译： 一种超声波传感器，包括使用和安装它的方法，具有一对超声换能器的传感器，该超声传感器适于插入并能够执行在导管中的单个引入部位。 超声波传感器测量在流体中传播的超声信号的正向超声波路径传播时间和第二反向超声波路径传播时间，该布置使得与超声波相关联的信号在一个方向上的比较与与超声波行进相关联的信号 在相反的方向使得能够确定管道中的流体的流量。 传感器可以利用管道上的反射表面和超声波传感器端盖的反射表面来提供正向和反向的超声波W形路径。 此外，超声波传感器可用于测量流体的温度，粘度和空化效应。
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公开(公告)号：US5576503A
公开(公告)日：1996-11-19
申请号：US387595
申请日：1995-02-13
申请人： Frederick A. Nabity , Robert R. Fiedler , James P. Masek , Brian D. Dawson , Russell T. Barker , Frederick D. Sueverkruepp, III , Ralph E. Setter , Paul G. Wright , Larry L. Fritz
发明人： Frederick A. Nabity , Robert R. Fiedler , James P. Masek , Brian D. Dawson , Russell T. Barker , Frederick D. Sueverkruepp, III , Ralph E. Setter , Paul G. Wright , Larry L. Fritz
IPC分类号： E21B43/12 , F04B43/12 , F04B49/10 , G01F1/72 , G01F3/00 , G01F3/20 , G01L9/00 , G01N1/00 , G01N1/14 , G01N1/18 , G01N35/04
CPC分类号： E21B43/121 , F04B43/12 , F04B43/1253 , F04B43/1276 , F04B49/10 , G01F1/72 , G01F3/00 , G01F3/20 , G01L9/0001 , G01N1/14 , G01N1/18 , F04B2205/06 , G01N2001/007 , G01N2035/0491 , Y10T436/115831
摘要： To select a designated bottle in a sampler, the distributor is calibrated as to position and the outlet of the distributor arm is moved over the desired bottle by counting changes in incremental angular movement of the distributor arm until it is over the bottle. The position of the distributor arm is recorded in memory. To calibrate the distributor, the arm is rotated against a stop member in a first direction, then in a second direction and the overrun of in excess of 360 degrees of the motion of the distributor arm is determined and corrected. A series of random numbers is generated for depositing of samples, the distributor is moved at designated times over the bottles in a random order to deposit a sample and the ordering of bottles is recorded. The rollers of a peristaltic pump are supported to prevent said rollers from compressing said tube more than the thickness of the walls of the tube. A functional module for a bubbler or pH probe or ultrasonic level detector may be connected to the housing.
摘要翻译： 为了在采样器中选择指定的瓶子，分配器被校准为位置，并且分配器臂的出口通过计算分配器臂的增量角运动的变化而移动到期望的瓶子上，直到其在瓶子上方。 分配器臂的位置记录在存储器中。 为了校准分配器，臂在第一方向上旋转抵靠止动构件，然后在第二方向上旋转，并且确定并校正超过分配器臂的运动超过360度的超限。 产生一系列随机数，用于沉积样品，分配器以指定的时间随机地移动到瓶子上以沉积样品并记录瓶子的顺序。 蠕动泵的辊被支撑以防止所述辊压缩所述管的多于管的壁的厚度。 用于起泡器或pH探针或超声波液位检测器的功能模块可以连接到壳体。
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公开(公告)号：US5419191A
公开(公告)日：1995-05-30
申请号：US38458
申请日：1993-03-29
申请人： K. Lynn Niehaus , Kevin L. Newcomer
发明人： K. Lynn Niehaus , Kevin L. Newcomer
摘要： A counting apparatus which is designed to be placed in parallel to a fluid flow line has a differential pressure switch which is placed across an orifice positioned within the fluid flow line. A counting mechanism is associated with the differential pressure switch to register a count when signaled by the differential pressure switch. The differential pressure switch is operable to react to the difference in pressure across the orifice to signal the counter to register a count. The orifice can be a fixed or a variable orifice. In another embodiment of the invention, a fixed or variable orifice is placed within the diaphragm of a diaphragm type differential pressure switch to adapt the differential pressure switch to be placed in series with the fluid flow line rather than in parallel to it.
摘要翻译： 被设计为与流体流动管线平行设置的计数装置具有差压开关，其位于流过流体管线内的孔口上。 计数机构与差压开关相关联，用于通过差压开关发出信号时记录计数。 差压开关可操作以对应于孔口两端的压力差，以通知计数器来计数。 孔可以是固定的或可变的孔。 在本发明的另一个实施例中，固定的或可变的孔被放置在隔膜式差压开关的膜片内，以使压差开关与流体流动管线串联放置，而不是平行于其。
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公开(公告)号：US4858466A
公开(公告)日：1989-08-22
申请号：US193531
申请日：1988-05-13
CPC分类号： G01F1/206 , F02M65/002 , G01F1/28 , G01F1/34 , F02B1/04
摘要： A measuring apparatus of a volume of a fluid injected from an injection valve. A fluid having a volume V is injected from an injection valve into an injection chamber containing a fluid, same kind as that of the injected fluid, and having a predetermined pressure and volume. A back pressure chamber is formed separately in the injection chamber with a parting plate having an effective under-pressure area A and a bellow sealed and connected, at one end thereof, to the parting plate. In the back pressure chamber a non-contact displacement sensor having a thermal compensation device is disposed with a clearance from the parting plate and the bellow and the back pressure chamber is filled with another fluid having same pressure as that of fluid in the injection chamber. By the injection of the fluid into the injection chamber, the parting plate moves toward the non-contact displacement sensor by a distance S which is equal to V/A. Distance S is detected by the non-contact displacement sensor. So the volume (V=AxS) of the fluid injected from the injection valve is measured easily and precisely without being affected by temperature variation.
摘要翻译： 一种从注射阀喷射的流体体积的测量装置。 具有体积V的流体从注射阀注入到包含与注射流体相同的流体并具有预定压力和体积的流体的注射室中。 背压室在注射室中单独形成，具有分离板，其具有有效的压力区域A和波纹管，其一端在分隔板上密封并连接。 在背压室中，具有热补偿装置的非接触位移传感器设置成具有与分隔板和波纹管相距的间隙，并且背压室填充有与注射室中的流体具有相同压力的另一流体。 通过将流体注入注射室，分型板朝着非接触位移传感器移动距离S等于V / A。 距离S由非接触位移传感器检测。 因此，不会受到温度变化的影响，容易且精确地测量从喷射阀喷射的流体的体积（V = AxS）。
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10.发明授权
公开(公告)号：US4565090A
公开(公告)日：1986-01-21
申请号：US542538
申请日：1983-10-17
申请人： Motohiro Gotanda
发明人： Motohiro Gotanda
CPC分类号： G01F3/227 , G01F15/065 , G01F3/22
摘要： In the gas meter comprising a housing made of non-magnetic material and provided with gas inlet and outlet, a driver section provided with a rotating member rotated in accordance to the flow amount of gas, and a meter driven by the driver section to display the flow amount of gas, a detector device for detecting whether or not gas is being used in a room or inside a house characterized by a magnetic material attached to the rotating member, by a sensor or sensors attached to the outer face of the housing to detect the rotation of the rotating member, and by a display driven by the output of the sensor to display whether or not gas is being used.
摘要翻译： 在包括由非磁性材料制成并具有气体入口和出口的壳体的燃气表中，具有根据气体流量旋转的旋转构件的驱动器部分和由驱动器部分驱动的仪表， 气体流量，检测装置，用于检测气体是否被使用在室内或室内，其特征在于安装在旋转构件上的磁性材料的特征在于通过安装在壳体的外表面上的传感器或传感器来检测 旋转构件的旋转以及由传感器的输出驱动的显示器，以显示是否使用气体。
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