公开(公告)号：US20010027685A1

公开(公告)日：2001-10-11

申请号：US09801777

申请日：2001-03-09

发明人： I-Nan Chang ,  Chung Chih Lo ,  Wu Chin Chen ,  Yen-Wen Chen

IPC分类号： G01H003/00 ,  G01N029/00

CPC分类号： G01N29/036 ,  G01N29/348 ,  G01N29/36 ,  G01N2291/02466 ,  G01N2291/101

摘要： A high resolution biosensing system for detecting and identifying a biochemical material to be tested by using proportional relationship between frequency variation of oscillation and mass of the biochemical material to be tested comprises a biosensor: all oscillator for generating oscillation based on the sensed result, a phase-lock loop circuit receiving the oscillation of the oscillator and generating pulse signals; an ultra-high frequency counter for counting the Bulb; signals; and a microprocessor for storing and displaying output from the ultra-high frequency counter and for controlling the oscillator. The phase-lock loop circuit generates the pulse signals of a frequency, which is n times the frequency of the oscillator and with a constant phase difference therebetween to trigger the ultra-high frequency counter. Accordingly, the resolution can be raised up to n times.

摘要翻译： 用于通过使用振荡频率变化与待测试的生化材料的质量之间的比例关系来检测和识别待测试的生化材料的高分辨率生物传感系统包括生物传感器：用于基于感测结果产生振荡的所有振荡器，相位 锁环回路接收振荡器的振荡并产生脉冲信号; 用于计数灯泡的超高频计数器; 信号; 以及用于存储和显示来自超高频计数器的输出并用于控制振荡器的微处理器。 锁相环电路产生频率的n倍的脉冲信号，其频率为振荡器频率的n倍，并且在其之间具有恒定的相位差以触发超高频​​计数器。 因此，分辨率可以提高到n倍。

公开(公告)号：US20040244492A1

公开(公告)日：2004-12-09

申请号：US10607487

申请日：2003-06-26

申请人： International Business Machines Corporation

发明人： Viktors Berstis

IPC分类号： H04R001/00 ,  G01H003/00 ,  H04R023/00

CPC分类号： G01V7/02

摘要： A mass is levitated with respect to a base, at least one of which is comprised of a diamagnetic material, with the levitated mass also having a permanent magnetic property. A second permanent magnet is optionally configured such that it attracts the levitation mass away from the base to overcome gravitational force on the mass, thereby suspending the mass over the surface of the base. The mass is contained in a nonmagnetic, non-shielding and optionally optically-transparent housing so as to limit its excursion within a range of levitation positions. A position measurement means such as a laser interferometer, capacitance detector, or pickup coil is configured to measure positional deviations of the mass in response to incident pressure wave, the output of which being an electronic signal representing the pressure wave.

摘要翻译： 质量相对于基底悬浮，其中至少一个由抗磁性材料构成，悬浮体也具有永久磁性。 第二永久磁铁任选地构造成使得其将悬浮质量吸引离开基座以克服质量块上的重力，从而将质量悬浮在基体的表面上。 质量包含在非磁性，非屏蔽和可选的光学透明外壳中，以便将其偏移限制在悬浮位置的范围内。 诸如激光干涉仪，电容检测器或拾取线圈的位置测量装置被配置成测量响应入射压力波的质量的位置偏差，其输出是表示压力波的电子信号。

公开(公告)号：US20040089071A1

公开(公告)日：2004-05-13

申请号：US10695771

申请日：2003-10-30

发明人： Richard S. Roark

IPC分类号： G01H003/10 ,  G01H003/00 ,  G01N017/00

CPC分类号： B06B1/0688 ,  G01H3/00 ,  G10K11/004

摘要： An automotive sound pressure level (SPL) meter is described that includes a means for mounting the SPL meter within an motor vehicle to measure motor vehicle audio system SPL values within the motor vehicle. The automotive SPL meter includes an internal microphone, or Pressure sensor, that is designed for automotive use. Such Pressure sensor improvements may include: use of a thicker and highly durable polytetrafluoroethylene (PTFE) microphone/Pressure sensor diaphragm; use of a thicker, non-conducting gasket to increase microphone/Pressure sensor excursion capability; use of a reduced number of microphone/Pressure sensor back plate holes; and/or, reducing the diameter of microphone/Pressure sensor back plate holes. The automotive SPL meter is highly resistant to operational environment temperature, humidity and decibel level extremes without sacrificing accuracy. A programmable micro-controller is used to increase design flexibility, and reduce the SPL meter discrete component count, thereby increasing reliability while reducing SPL meter physical size and production costs.

摘要翻译： 描述了一种汽车声压级（SPL）仪表，其包括用于将机载车辆内的SPL仪表安装在机动车辆内的装置，以测量机动车辆内的汽车音响系统SPL值。 汽车SPL仪表包括专为汽车使用而设计的内置麦克风或压力传感器。 这种压力传感器的改进可能包括：使用更厚和更耐用的聚四氟乙烯（PTFE）麦克风/压力传感器隔膜; 使用较厚的非导电垫圈来增加麦克风/压力传感器偏移能力; 使用减少数量的麦克风/压力传感器后板孔; 和/或减小麦克风/压力传感器背板孔的直径。 汽车SPL表具有高度的耐操作环境温度，湿度和分贝极限，不会牺牲精度。 可编程微控制器用于提高设计灵活性，并降低SPL仪表的分立元件数量，从而提高可靠性，同时降低SPL仪表的物理尺寸和生产成本。

公开(公告)号：US20030233868A1

公开(公告)日：2003-12-25

申请号：US10431573

申请日：2003-05-08

发明人： Alfred Rieder ,  Wolfgang Drahm

IPC分类号： G01H003/00 ,  G01N011/16

CPC分类号： G01F1/8409 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/8422 ,  G01F1/8427 ,  G01F1/849 ,  G01N9/002 ,  G01N11/167 ,  G01N2203/0025 ,  G01N2203/0094 ,  G01N2203/0676

摘要： To conduct a fluid, the transducer has a flow tube which in operation is vibrated by an excitation assembly and whose inlet-side and outlet-side vibrations are sensed by means of a sensor arrangement. To produce shear forces in the fluid, the flow tube is at least intermittently excited into torsional vibrations about a longitudinal flow-tube axis. The transducer further comprises a torsional vibration absorber which is fixed to the flow tube and which in operation covibrates with the torsionally vibrating flow tube, thus producing reactive torques which at least partially balance torques developed in the vibrating flow tube. One of the advantages of the transducer disclosed is that it is dynamically balanced to a large extent even in the face of variations in fluid density or viscosity.

摘要翻译： 为了传导流体，传感器具有流动管，其在操作中由激励组件振动，并且其流体侧和出口侧振动通过传感器装置被感测。 为了在流体中产生剪切力，流管至少间歇地被激发成围绕纵向流管轴线的扭转振动。 换能器还包括固定到流管的扭转振动吸收器，其在运行中与扭转振动流管共振，由此产生至少部分平衡在振动流管中产生的扭矩的反作用扭矩。 所公开的传感器的优点之一是即使在流体密度或粘度的变化的情况下也能在很大程度上动态平衡。

公开(公告)号：US20020174721A1

公开(公告)日：2002-11-28

申请号：US10112522

申请日：2002-03-29

发明人： Malte Gross

IPC分类号： G01H003/00 ,  G01N029/00

CPC分类号： A61M1/3639 ,  A61M1/367

摘要： A method and device for detecting stenoses in a tubular line system during an extracorporeal hemotherapy. The tubular line system has an arterial branch going out from the patient and leading to a hemotherapeutic unit, and a venous branch going out from the hemotherapeutic unit and leading to the patient, where an oscillating pressure signal is generated in the tubular line system, and the oscillating pressure signal is measured. To detect stenoses, the frequency spectrum of the oscillating pressure signal is analyzed, in response to a change in the frequency spectrum. This method is based on the principle that, in response to the existence of a stenosis, the dynamic performance of the tubular line system changes, the higher frequency components of the pressure signal generated by the rollers of the blood pump, which propagates across the tubular line system, being attenuated due to the compliance of the line system.

摘要翻译： 一种用于在体外血液疗法期间检测管状系统中的狭窄的方法和装置。 管状系统具有从患者出来并导致血液治疗单元的动脉分支和从血液治疗单元出来并导致患者的静脉分支，其中在管状系统中产生振荡压力信号，以及 测量振荡压力信号。 为了检测狭窄，响应于频谱的变化，分析振荡压力信号的频谱。 该方法基于以下原理：响应于狭窄的存在，管状线系统的动态性能改变，血泵的辊产生的压力信号的较高频率分量传播穿过管状 线路系统，由于线路系统的符合性而衰减。

公开(公告)号：US20010010174A1

公开(公告)日：2001-08-02

申请号：US09801165

申请日：2001-03-07

发明人： Leonid Matsiev ,  James Bennett ,  Eric McFarland

IPC分类号： G01N029/00 ,  G01H003/00

CPC分类号： G01N29/4418 ,  B01J2219/00704 ,  G01H13/00 ,  G01N5/04 ,  G01N9/002 ,  G01N11/16 ,  G01N29/022 ,  G01N29/036 ,  G01N29/348 ,  G01N29/42 ,  G01N2009/006 ,  G01N2291/014 ,  G01N2291/0224 ,  G01N2291/0255 ,  G01N2291/02818 ,  G01N2291/02863 ,  G01N2291/0422 ,  G01N2291/0423 ,  G01N2291/0426 ,  G01N2291/0427

摘要： A method and apparatus for measuring properties of a liquid composition includes a mechanical resonator, such as a thickness shear mode resonator or a tuning fork resonator, connected to a measurement circuit. The measurement circuit provides a variable frequency input signal to the tuning fork, causing the mechanical resonator to oscillate. To test the properties of a liquid composition, the mechanical resonator is placed inside a sample well containing a small amount of the liquid. The input signal is then sent to the mechanical resonator and swept over a selected frequency range, preferably less than 1 MHz to prevent the liquid being tested from exhibiting gel-like characteristics and causing false readings. The mechanical resonator's response over the frequency range depends on various characteristics of the liquid being tested, such as the temperature, viscosity, and other physical properties. Particular mechanical resonators, such as tuning fork resonators, can also be used to measure a liquid composition's electrical properties, such as the dielectric constant and conductivity, because the tuning fork's structure allows a high degree of electrical coupling between the tuning fork and the surrounding liquid. The mechanical resonator can be covered with a coating to impart additional special detection properties to the resonator, and multiple resonators can be attached together as a single sensor to obtain multiple frequency responses. The invention is particularly suitable for combinatorial chemistry applications, which require rapid analysis of chemical properties for screening.

摘要翻译： 用于测量液体组合物性质的方法和装置包括连接到测量电路的机械谐振器，例如厚度剪切模式谐振器或音叉谐振器。 测量电路向音叉提供可变频率输入信号，使机械谐振器振荡。 为了测试液体组合物的性质，将机械谐振器放置在含有少量液体的样品孔内。 然后将输入信号发送到机械谐振器并扫过选定的频率范围，优选小于1MHz，以防止被测试的液体表现出凝胶状特征并导致错误的读数。 机械谐振器在频率范围内的响应取决于待测液体的各种特性，例如温度，粘度和其他物理性质。 由于音叉的结构允许音叉和周围液体之间的高度电耦合，所以诸如音叉谐振器的特殊的机械谐振器也可用于测量液体组合物的电性能，例如介电常数和导电性 。 可以用涂层覆盖机械谐振器以赋予谐振器附加的特殊检测特性，并且多个谐振器可以作为单个传感器附接在一起以获得多个频率响应。 本发明特别适用于组合化学应用，需要快速分析筛选的化学性质。

公开(公告)号：US20030233878A1

公开(公告)日：2003-12-25

申请号：US10431640

申请日：2003-05-08

发明人： Wolfgang Drahm ,  Alfred Rieder

IPC分类号： G01H003/00 ,  G01N011/16

CPC分类号： G01F1/8409 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/8422 ,  G01F1/8427 ,  G01F1/849 ,  G01N9/002 ,  G01N11/167 ,  G01N2203/0025 ,  G01N2203/0094 ,  G01N2203/0676

摘要： To conduct a fluid, the transducer has a flow tube which in operation vibrated by an excitation assembly. Inlet-side and outlet-side vibrations of the flow tube are sensed by means of a sensor arrangement. To produce shear forces in the fluid, the flow tube is at least intermittently excited into torsional vibrations about a longitudinal flow-tube axis. An internal portion of the transducer, formed at least by the flow tube, an antivibrator, the sensor arrangement, and the excitation assembly and mounted at least on the inlet and outlet tube sections, has a centroid which is located inside the flow tube. The transducer is suitable for use in viscometers or Coriolis mass flowmeter-viscometers. In spite of using only a single straight flow tube, it is dynamically well balanced in operation, and the development of bending moments by the torsionally vibrating flow tube is largely prevented. This also effectively prevents the transducer case or the connected pipe from being excited into sympathetic vibration. Measurement signals representative of mass flow rate are readily distinguishable from measurement signals representative of viscosity, particularly if the sensors used for the viscosity measurement are also used for the mass flow measurement.

摘要翻译： 为了传导流体，传感器具有在操作中由激励组件振动的流动管。 通过传感器装置来检测流管的入口侧和出口侧振动。 为了在流体中产生剪切力，流管至少间歇地被激发成围绕纵向流管轴线的扭转振动。 至少由流管形成的换能器的内部部分，防振器，传感器装置和激励组件至少安装在入口管部分和出口管部分上，具有位于流管内部的质心。 传感器适用于粘度计或科里奥利质量流量计粘度计。 尽管仅使用单个直流管，但在操作中动态平衡良好，并且大大地防止了由扭转振动流管引起的弯矩的发展。 这也有效地防止了换能器壳体或连接的管道被激发成交感振动。 表示质量流量的测量信号与代表粘度的测量信号容易区分，特别是如果用于粘度测量的传感器也用于质量流量测量。

公开(公告)号：US20020148294A1

公开(公告)日：2002-10-17

申请号：US10093337

申请日：2002-03-07

发明人： Anthony Bond

IPC分类号： G01H003/00 ,  G01N029/00

CPC分类号： G01M3/246 ,  F16L55/46 ,  F16L55/48 ,  F16L2101/30 ,  F16L2101/60 ,  Y10T137/0441 ,  Y10T137/0458 ,  Y10T137/612

摘要： Apparatus for deploying equipment in a fluid container or fluid conduit comprises a fluid housing having an outlet aperture, the fluid housing being adapted to be secured to the container or conduit such that the outlet aperture is in fluid communication with an aperture in the container or conduit. The apparatus further includes a piston in the fluid housing dividing the fluid housing into first and second fluid chambers, the second fluid chamber being in fluid communication with the interior of the container or conduit via the outlet aperture when the fluid housing is secured in fluid communication with the container or conduit. The piston is movable within the fluid housing toward the outlet aperture in response to increases of fluid pressure in the first fluid chamber. The apparatus further includes a guide means for guiding deployment of the equipment into the container or conduit. The guide means is secured to the piston, whereby movement of the piston within the fluid housing can move the guide means at least partially into the container or conduit through said outlet aperture.

摘要翻译： 用于将设备部署在流体容器或流体导管中的装置包括具有出口孔的流体壳体，流体壳体适于固定到容器或导管，使得出口孔与容器或管道中的孔流体连通 。 该装置还包括在流体壳体中的活塞，将流体壳体分成第一和第二流体室，当流体壳体被固定成流体连通时，第二流体室经由出口孔与容器或导管的内部流体连通 与容器或导管。 响应于第一流体室中的流体压力的增加，活塞可以在流体壳体内朝着出口孔移动。 该装置还包括用于引导将设备展开到容器或导管中的引导装置。 引导装置被固定到活塞上，由此活塞在流体壳体内的运动可以使引导装置至少部分地通过所述出口孔移动到容器或管道中。

公开(公告)号：US20020134140A1

公开(公告)日：2002-09-26

申请号：US09815099

申请日：2001-03-22

发明人： Joseph Baumoel

IPC分类号： G01H003/00

CPC分类号： G01F1/66 ,  G01M3/243 ,  G01N2291/02836

摘要： A system and method for determining a time of occurrence of a pressure wave in a pipe provides a first sonic transducer and a second sonic transducer at each of a plurality of site locations along a pipe. Sonic waves are generated through a pipewall at a rate. At each of the plurality of site locations, the sonic waves travel from the first sonic transducer to the second sonic transducer through a liquid flow in the pipe. A measure of travel time is set for the sonic waves. The measure is compared to each of the successive travel times for the sonic waves as the sonic waves arrive at the respective second transducers. A string of counts is output at each second transducer. Each count includes a first count value if a present sonic wave has a travel time that is late as compared to the measure. A time of occurrence of the pressure wave is determined based on a reference clock when the string of counts includes a string of first count values longer than a threshold value. The time of occurrence of a pressure transient is indicated by a first count in the string of first count values.

摘要翻译： 用于确定管道中压力波出现时间的系统和方法在沿管道的多个位置位置的每一个处提供第一声音换能器和第二声音换能器。 声波以一个速率通过管道产生。 在多个位置位置的每一个处，声波通过管道中的液体流从第一声音换能器传播到第二声音换能器。 声波测量行驶时间。 当声波到达相应的第二换能器时，该测量与声波的每个连续行进时间进行比较。 在每个第二换能器处输出一串计数。 如果当前的声波具有与测量相比较晚的行进时间，则每个计数包括第一计数值。 当计数串包括长于阈值的第一计数值的串时，基于参考时钟确定压力波的发生时间。 压力瞬变的发生时间由第一计数值串中的第一计数指示。