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1. 发明申请

US20060049114A1 Method for positioning small particles in a fluid 失效
标题翻译：将小颗粒定位在流体中的方法
公开(公告)号：US20060049114A1
公开(公告)日：2006-03-09
申请号：US10548116
申请日：2003-09-25
申请人： Albrecht Haake , Jurg Dual
发明人： Albrecht Haake , Jurg Dual
IPC分类号： C02F1/32
CPC分类号： G10K15/00 , B01D21/283
摘要： The invention covers the field of positioning of small particles (58, 59) in a fluid (55). Disclosed is a method by which small particles (58, 59) are positioned by a sound field. For generating the sound field an apparatus contains a plate (51) excited to vibrations by a transducer (52) and a reflecting body with a rigid surface (54). A mounting (53) holds the vibrating plate (51) and the transducer (52). The particles will be concentrated at predetermined positions either at the rigid surface of the reflecting body (58) or levitating in the fluid (59). Due to the fact that the sound waves are emitted by the vibrating plate particles can be positioned in entire area between the vibrating plate and the reflecting body.
摘要翻译：本发明涵盖了在流体（55）中定位小颗粒（58,59）的领域。公开了一种通过声场定位小颗粒（58,59）的方法。为了产生声场，装置包含由换能器（52）和具有刚性表面（54）的反射体激发的振动板（51）。安装件（53）固定振动板（51）和换能器（52）。颗粒将集中在反射体（58）的刚性表面处的预定位置或在流体（59）中悬浮。由于声波由振动板发射，因此可以将振动板和反射体之间的整个区域定位。

2. 发明授权

US5837885A Method and device for measuring the characteristics of an oscillating system 失效
标题翻译：用于测量振荡系统特性的方法和装置
公开(公告)号：US5837885A
公开(公告)日：1998-11-17
申请号：US605203
申请日：1996-08-29
申请人： Joseph Goodbread , Mahir Sayir , Klaus Hausler , Jurg Dual
发明人： Joseph Goodbread , Mahir Sayir , Klaus Hausler , Jurg Dual
IPC分类号： G01F1/20 , G01D5/48 , G01H13/00 , G01L9/00 , G01N9/00 , G01N11/00 , G01N11/16 , G01N29/09 , G01P15/10 , G10K11/26 , G01N9/32 , G01N29/02 , G01N29/24
CPC分类号： B82Y15/00 , G01N11/162 , Y10S73/01
摘要： A resonator (1) is vibrating close to its resonance frequency. The vibration is excited by one or a first transducer (2) connected to an oscillator (11). The vibration is measured by the transducer (2) or a second transducer (3) and stabilized by a phase-locked feedback loop comprising a phase sensitive detector (33), a feedback controller (36), a phase shifter (17) and means (15) to evaluate the measured frequencies. In order to measure the damping of the resonator (1), the phase in the phase shifter (17) is alternately set to two different values. The difference between the frequencies corresponding to these two phase values is a measure for the damping of the system. One or more switches (19, 28, 27) and a gate generator (16) make sure that excitation and measurement do not occur at the same time. Thereby, any cross-talk between driving and sensing transducers is completely eliminated. Also, a single transducer can be used to both excite and measure the vibration. Thereby, a very compact transducer set-up can be implemented and the precision and range of the measurement is improved.
摘要翻译： PCT No.PCT / EP95 / 00761 Sec。 371日期：1996年8月29日 102（e）日期1996年8月29日PCT 1995年3月2日PCT公布。出版物WO95 / 24630 PCT 日期1995年9月14日谐振器（1）振动接近谐振频率。振动由连接到振荡器（11）的一个或第一传感器（2）激发。振动由换能器（2）或第二换能器（3）测量，并由包括相敏检测器（33），反馈控制器（36），相移器（17）和相位检测器（15）来评估测量的频率。为了测量谐振器（1）的衰减，移相器（17）中的相位被交替地设置为两个不同的值。对应于这两个相位值的频率之间的差异是对系统的阻尼的度量。一个或多个开关（19,28,27）和栅极发生器（16）确保激励和测量不会同时发生。因此，完全消除了驱动和感测换能器之间的任何串扰。此外，单个换能器可用于激发和测量振动。因此，可以实现非常紧凑的换能器装置，并且提高了测量的精度和范围。

3. 发明授权

US4920787A Viscometer 失效
标题翻译：粘度计
公开(公告)号：US4920787A
公开(公告)日：1990-05-01
申请号：US197990
申请日：1988-05-24
申请人： Jurg Dual , Mahir Sayir , Joseph Goodbread
发明人： Jurg Dual , Mahir Sayir , Joseph Goodbread
IPC分类号： G01N11/16
CPC分类号： G01N11/162
摘要： A resonator in the form of a cylindrical body is immersed in a fluid to be measured and excited by a piezoelectric transducer in the vicinity of its natural frequency. The vibration frequency is stabilized by a feedback loop. In that feedback loop a phase shift is introduced which can be switched between to discrete values. The resulting difference in frequency of oscillation of the resonator is proportional to the damping ratio of the resonator and is, therefore, a measure for the viscosity of the fluid. The natural frequency of the piezoelectric transducer is substantially higher than the natural frequency of the resonator, and the oscillation of the resonator is mechanically isolated from the housing by an inertial mass - spring arrangement with low natural frequency.
摘要翻译：将圆柱体形式的谐振器浸入被测量的流体中，并在其固有频率附近被压电换能器激励。振动频率由反馈回路稳定。在该反馈回路中，引入可以在离散值之间切换的相移。谐振器的振荡频率的差异与谐振器的阻尼比成比例，因此是流体粘度的量度。压电换能器的固有频率明显高于谐振器的固有频率，谐振器的振荡通过具有低固有频率的惯性质量 - 弹簧装置与壳体机械隔离。

4. 发明申请

US20130139573A1 RESONANT CONDUCTOR MEASUREMENT SYSTEM AND METHOD 有权
标题翻译：谐波导体测量系统和方法
公开(公告)号：US20130139573A1
公开(公告)日：2013-06-06
申请号：US13657617
申请日：2012-10-22
申请人： Joseph Goodbread , Jurg Dual
发明人： Joseph Goodbread , Jurg Dual
IPC分类号： G01N11/16
CPC分类号： G01N11/16 , G01N11/162
摘要： A method of measuring properties of a fluid that uses a conductor electrically connected to a current source. A magnetic field is created about the conductor and the conductor is introduced into the fluid medium. A current waveform, having a frequency, is periodically passed through the conductor, so as to cause the conductor to move, due to force exerted on the conductor from interaction of the current and the magnetic field. The conductor movement is sensed, producing a sense signal that is amplified into an amplified sense signal. The phase relationship between the current waveform and the amplified sense signal is measured and the current waveform frequency is adjusted to create a phase lock loop. The frequency when the phase lock loop is in lock state is measured as the phase between the excitation and the measured sense signal is varied, and fluid properties are calculated from the measured frequencies.
摘要翻译：测量使用电连接到电流源的导体的流体性质的方法。围绕导体产生磁场，并将导体引入到流体介质中。具有频率的电流波形周期性地通过导体，以便由于电流和磁场的相互作用而施加在导体上的力，导致导体移动。感测导体运动，产生被放大为放大的感测信号的感测信号。测量电流波形和放大的感测信号之间的相位关系，并调整电流波形频率以产生锁相环。当锁相环处于锁定状态时的频率被测量，因为激励和测量的感测信号之间的相位发生变化，并且根据测量的频率计算流体特性。

5. 发明授权

US08291750B1 Resonant measurement system and method 有权
标题翻译：共振测量系统和方法
公开(公告)号：US08291750B1
公开(公告)日：2012-10-23
申请号：US12378534
申请日：2009-02-17
申请人： Joseph Goodbread , Jurg Dual
发明人： Joseph Goodbread , Jurg Dual
IPC分类号： G01N11/16
CPC分类号： G01N11/16 , G01N11/162
摘要： A system for measuring damping and that includes an oscillator that produces an excitation signal for a resonator that can be placed in a damping medium. A sensor produces a sensor signal responsive to resonator motion. Also, a timing circuit ensures that excitation and sensing occur during mutually exclusive periods. An amplifier responds to the sensor signal, producing an amplified sensor signal. A phase detector is adapted to measure the phase relationship between the excitation signal and the amplified sensor signal and a controller is responsive to the phase detector to adjust the excitation frequency of the excitation signal, to create a phase lock loop. An integrator receives the amplified signal during periods that are mutually exclusive to and interleaved with the excitation. This integrator produces an integrated DC and low frequency component of the amplified signal, which is subtracted from the input amplifier input.
摘要翻译：一种用于测量阻尼的系统，其包括产生可放置在阻尼介质中的谐振器的激励信号的振荡器。传感器产生响应谐振器运动的传感器信号。此外，定时电路确保在互斥期间发生激励和感测。放大器响应传感器信号，产生放大的传感器信号。相位检测器适于测量激励信号和放大的传感器信号之间的相位关系，并且控制器响应于相位检测器来调节激励信号的激励频率，以产生锁相环。积分器在与激励相互排斥和交错的周期期间接收放大的信号。该积分器产生放大信号的集成DC和低频分量，其从输入放大器输入中减去。

6. 发明申请

US20060286678A1 Pipetting needle 有权
公开(公告)号：US20060286678A1
公开(公告)日：2006-12-21
申请号：US11128677
申请日：2005-05-13
申请人： Jurg Dual , Olivier Elsenhans , Frank May
发明人： Jurg Dual , Olivier Elsenhans , Frank May
IPC分类号： B01L3/02
CPC分类号： B01L3/0268 , B01L2400/0439 , G01N2035/1039 , Y10T436/2575
摘要： A method and a micropipetting apparatus is described for dispensing a liquid volume into a vessel via pipetting needle without any contact between the needle and a liquid contained in the vessel. The method comprises forming a drop at the delivery tip of the pipetting needle, the drop being retained at the tip by adhesion forces, and ejecting the drop from the tip of the pipetting needle by focusing at the tip of the pipetting needle a mechanical excitation wave applied at an excitation point at some distance from the tip of the pipetting needle. The apparatus comprises a pipetting needle, an electromechanical transducer mechanically connected with said pipetting needle for mechanically exciting the pipetting needle with a pulse of mechanical waves that propagate through the needle, and an electrical signal generator for generating an excitation pulse signal and for applying this signal to the electromechanical transducer.

7. 发明申请

US20060093525A1 Level sensor apparatus for detecting contact of a pipetting needle with a liquid in a vessel 有权
标题翻译：液位传感器装置，用于检测移液针与容器中液体的接触
公开(公告)号：US20060093525A1
公开(公告)日：2006-05-04
申请号：US11128542
申请日：2005-05-13
申请人： Markus Brunner , Jurg Dual , Oliver Elsenhans , Frank May , Vuk Siljegovic
发明人： Markus Brunner , Jurg Dual , Oliver Elsenhans , Frank May , Vuk Siljegovic
IPC分类号： B01L3/02
CPC分类号： G01N35/1011 , B01L3/021 , G01F23/2965 , G01F23/2966 , G01N2035/1025
摘要： A level sensor apparatus is disclosed for detecting contact of a pipetting needle with a liquid contained in a vessel. The apparatus includes a sensor head made up of a pipetting needle, a needle holder, and an electromechanical transducer. The sensor head also has an associated mechanical resonance frequency. An electrical signal generator is used to generate a driving signal which when applied to the electromechanical transducer causes vibration of the pipetting needle at the resonance frequency. A measurement device is used to measure a parameter of a vibration signal indicative of the mechanical vibration of the pipetting needle when it is driven by the driving signal. An electronic circuit and associated computer software is provided to evaluate variation of the vibration signal with time and thus detect contact of the pipetting needle with a liquid contained in the vessel.
摘要翻译：公开了一种液位传感器装置，用于检测移液针与容纳在容器中的液体的接触。该装置包括由移液针，针保持器和机电换能器构成的传感器头。传感器头还具有相关的机械共振频率。电信号发生器用于产生一个驱动信号，当驱动信号被施加到机电换能器时，会使谐振频率下的移液针振动。测量装置用于测量当由驱动信号驱动时指示移液针的机械振动的振动信号的参数。提供电子电路和相关联的计算机软件以评估振动信号随时间的变化，从而检测移液针与容纳在容器中的液体的接触。

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