-
公开(公告)号：US20060289809A1
公开(公告)日：2006-12-28
申请号：US11328735
申请日：2006-01-10
IPC分类号： G01J3/10
CPC分类号： G01N27/622 , G01N27/624 , G01N30/6095 , G01N30/62 , G01N30/64 , G01N30/66 , G01N30/70 , G01N30/7206 , G01N30/78 , G01N2030/025 , G01N2030/642 , G01N2030/645
摘要： Embodiments of the present invention relate to detector structures for use in a micro gas analyzer, preferably in a differential setup. The detector structures may comprise one or more detector types, such as photo-ionization (PID), electron capture (ECD), ion mobility (IMS), differential mobility (DMS), ion-trap mass spectrometer (ITMS), in which all are provided with ions and electrons from one vacuum ultra violet (VUV) source. This source may also provide ions for ion-based gas pumps.
-
公开(公告)号：US07127935B2
公开(公告)日：2006-10-31
申请号：US11053569
申请日：2005-02-07
申请人： Ulrich Bonne , Rajiv R. Singh , Syed M. Shahed , Richard A. Kirkpatrick, II , Aziz Rahman , Yue Liu
发明人： Ulrich Bonne , Rajiv R. Singh , Syed M. Shahed , Richard A. Kirkpatrick, II , Aziz Rahman , Yue Liu
CPC分类号： G01N27/4141
摘要： A sensor system for detecting the presence of at least one specific component in a fluid medium such as an exhaust gas. A sensor is mounted in a sensor body for detecting the presence of at least one specific component and providing a representative signal that is transmitted to a remote receiver for processing. A power source such as a thermopile provides power for the sensor and the transmitter. Preferred are sensors that detect a plurality of different components in the gas and provide a distinct signal for each component. A preferred transmitter is designed to transmit at a low duty cycle so as to conserve power. A preferred sensor is electronic, has the capability for self-diagnostics and self-calibration, and causes a change in current when exposed to the component, such as a functionalized field effect transistor.
-
公开(公告)号：US20060228261A1
公开(公告)日：2006-10-12
申请号：US11276399
申请日：2006-02-27
申请人： Nancy Iwamoto , Teresa Ramos , Robert Roth , Ulrich Bonne
发明人： Nancy Iwamoto , Teresa Ramos , Robert Roth , Ulrich Bonne
CPC分类号： B01J20/285 , B01J20/28 , B01J20/28007 , B01J20/28095 , B01J20/282 , B01J2220/54 , B82Y30/00 , G01N30/52 , G01N30/6095 , G01N2030/525
摘要： Selecting a stationary phase for a fluid analyzer using certain criteria to determine an appropriate material for use in, for instance, a micro fluid analyzer. High absorption of an analyte or sample, low water sorbency and high porosity or permeability of the material may be sought. A selected material may incorporate a toughening agent using a neutral leaving group. A selected material may have a capping agent to promote hydrophobicity. A selected material may be a hydrophobic polymer. The selection of a stationary phase may involve molecular modeling.
摘要翻译： 使用某些标准选择用于流体分析仪的固定相，以确定用于例如微流体分析仪的适当材料。 可以寻求分析物或样品的高吸收性，低吸水性和材料的高孔隙率或渗透性。 选择的材料可以使用中性离去基团掺入增韧剂。 选择的材料可以具有封端剂以促进疏水性。 所选择的材料可以是疏水性聚合物。 固定相的选择可能涉及分子建模。
-
公开(公告)号：US20050022594A1
公开(公告)日：2005-02-03
申请号：US10930546
申请日：2004-08-31
CPC分类号： G01F5/00 , G01F1/684 , G01F1/6842 , G01F1/6845 , G01F1/6847 , G01F15/14 , G01F15/18 , G01F15/185 , G01N1/2247 , G01N25/18 , G01N25/488 , G01N33/0014 , G01N2001/2285 , Y10T29/49117 , Y10T29/4913 , Y10T29/49135 , Y10T29/49147 , Y10T29/49798
摘要： A flow sensor is provided having a substrate with a sensing element and flow channel aligned over the sensing element. The sensing element senses at least one property of a fluid. The flow channel is aligned by one or more guide elements formed in an alignment layer. The flow channel across the sensing area is accurately and precisely aligned due to the guide elements provided at the wafer-level, facilitating reliable, low-cost, and consistent results among multiple flow sensors. The flow sensor is adapted for use in harsh environments.
摘要翻译： 提供了一种流量传感器，其具有基底，该基底具有在感测元件上对准的感测元件和流动通道。 感测元件感测流体的至少一个性质。 流动通道由形成在对准层中的一个或多个引导元件对准。 由于提供在晶片级的引导元件，穿过感测区域的流动通道精确而准确地对准，从而促进了多个流量传感器之间的可靠，低成本和一致的结果。 流量传感器适用于恶劣环境。
-
公开(公告)号：US06184773B2
公开(公告)日：2001-02-06
申请号：US09207165
申请日：1998-12-07
申请人： Ulrich Bonne , Aravind Padmanabhan
发明人： Ulrich Bonne , Aravind Padmanabhan
IPC分类号： H01L304
CPC分类号： G01F1/6845
摘要： A thermal fluid flow or property sensor having no exposed contact wires or contact pads in the fluid flow path to obstruct measurements, flat fully passivated sensor surfaces and high corrosion resistance is implemented over a honeycombed thermal isolation chamber.
摘要翻译： 在流体流动路径中没有暴露的接触线或接触垫以阻塞测量，平坦完全钝化的传感器表面和高耐腐蚀性的热流体流动或性质传感器在蜂窝式热隔离室上实现。
-
公开(公告)号：US6019505A
公开(公告)日：2000-02-01
申请号：US001530
申请日：1997-12-31
CPC分类号： G01N27/18
摘要： A method and apparatus for providing a more direct approach to determine the thermal conductivity, thermal diffusivity and specific heat of a fluid of interest, independently of the amplitude of the sensor output. This is preferably accomplished by measuring one or more variable phase or time lags between selected input and output AC signals, and directly deriving the thermal conductivity, thermal diffusivity and specific heat therefrom. Such derivation is therefore less dependent than amplitude-based sensors on occasional or unpredictable drift in sensor resistive elements.
摘要翻译： 一种用于提供更直接的方法以独立于传感器输出的幅度来确定感兴趣的流体的热导率，热扩散率和比热的方法和装置。 这优选通过测量所选择的输入和输出AC信号之间的一个或多个可变相位或时间滞后，并直接导出热导率，热扩散率和比热。 因此，在传感器电阻元件偶尔或不可预测的漂移中，这种推导与基于幅度的传感器相比较不太依赖。
-
公开(公告)号：US5533393A
公开(公告)日：1996-07-09
申请号：US372577
申请日：1995-01-13
CPC分类号： G01N25/66 , G01N27/121
摘要： A microsensor system for determining water vapor content of the ambient atmosphere that uses a thin film suspended ceramic diaphragm structure featuring an embedded, patterned thin film heater, temperature sensor and an external film of an hygroscopic salt stabilized in a water-insoluble, crosslinked polymer matrix and contacting a pair of patterned electrodes which are proximate to the heater. The heater controls a selected electrical parameter of the salt to a fixed, predetermined value, as determined by its electrical characteristics. The dew point of the atmosphere is determined based on the dynamic relation with the salt dehydration temperature.
摘要翻译： 一种微传感器系统，用于测定环境大气中的水蒸气含量，该系统使用薄膜悬浮陶瓷膜片结构，其特征在于嵌入的，图案化薄膜加热器，温度传感器和稳定在水不溶性交联聚合物基质中的吸湿盐的外部膜 并接触靠近加热器的一对图案化电极。 加热器将所选择的盐的电参数控制为由其电特性确定的固定的预定值。 基于与盐脱水温度的动态关系确定大气露点。
-
公开(公告)号：US5303167A
公开(公告)日：1994-04-12
申请号：US666780
申请日：1991-03-08
申请人： Ulrich Bonne
发明人： Ulrich Bonne
CPC分类号： G01N27/18 , G01L11/002
摘要： A sensor that provides absolute pressure independent of the composition of the measured gas includes a large microbridge used to determine the thermal conductivity and specific heat of the gas and a small microbridge pressure sensor comprising a heated element suspended over a V-groove. Voltages and currents associated with heated elements of both microbridges are measured and used in an equation to provide an absolute pressure value.
摘要翻译： 提供与测量气体的组成无关的绝对压力的传感器包括用于确定气体的热导率和比热的大型微桥，以及包括悬挂在V形槽上的加热元件的小型微桥压力传感器。 测量与两个微桥的加热元件相关的电压和电流，并在等式中使用以提供绝对压力值。
-
19.发明授权Apparatus and method for detecting leaks in a system for delivering gaseous fuel 失效用于检测用于输送气体燃料的系统中的泄漏的装置和方法
公开(公告)号：US5085576A
公开(公告)日：1992-02-04
申请号：US550784
申请日：1990-07-10
申请人： Ulrich Bonne , George J. Tate , Edward Schwarz
发明人： Ulrich Bonne , George J. Tate , Edward Schwarz
CPC分类号： F23N5/242 , G01M3/224 , F23N2021/10 , F23N2031/18 , F23N2033/06 , F23N2035/14 , Y10T137/8158 , Y10T137/8326
摘要： A leak detector for a valve controlling flow of fuel to a combustion chamber employs a fuel concentration sensor in a sensing chamber placed downstream from the valve seat. The valve has a downstream chamber which is in communication by diffusion through an orifice, with a source of pressurized air. By injecting air into the downstream chamber through this orifice after the valve has closed and then measuring with the sensor the fuel concentration within the sensing chamber, excessive fuel leakage by the valve can be detected.
-
公开(公告)号：US4961348A
公开(公告)日：1990-10-09
申请号：US285897
申请日：1988-12-16
申请人： Ulrich Bonne
发明人： Ulrich Bonne
CPC分类号： G01F1/6965 , G01F1/68 , G01F1/6842 , G01F1/86 , G01F15/043
摘要： A method for correcting the flow measurement of a gaseous fluid of interest for changes in the composition of that fluid in a flowmeter of the microanemometer class is disclosed in which an uncorrected flow value signal for the fluid of interest in relation to a microanemometer sensor output is corrected by applying a correction factor to the flow value signal based on certain unique physical parameters of the fluid of interest which nominally include thermal conductivity, k, specific heat, c.sub.p, and density, q.
-
-
-
-
-
-
-
-
-
搜索结果
143 条记录 (耗时 0.042 秒)
