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公开(公告)号：US07399280B2
公开(公告)日：2008-07-15
申请号：US10829729
申请日：2004-04-21
申请人： James Z. Liu , Richard A. Alderman
发明人： James Z. Liu , Richard A. Alderman
CPC分类号： G01F1/6882 , A61B5/0031 , A61B5/411 , A61B8/06 , A61B8/12 , A61B8/4472
摘要： A wireless surface wave flow sensor can be utilized for monitoring the flow of fluid. Such a surface wave flow sensor can be configured to include one or more interdigital transducers and a self-heating heater formed upon a piezoelectric substrate. The interdigital transducer(s) can be selected to convert electrical signals to surface waves thereof. An antenna can also be connected to the surface wave device, wherein the antenna can receive one or more signals, which excites the acoustic device to produce a frequency output associated with the flow of the fluid for analysis thereof.
摘要翻译： 无线表面波流传感器可用于监测流体的流动。 这种表面波流量传感器可以被配置为包括形成在压电基板上的一个或多个叉指式换能器和自加热加热器。 可以选择叉指换能器以将电信号转换成其表面波。 天线也可以连接到表面波装置，其中天线可以接收一个或多个信号，这些信号激励声学装置以产生与流体流相关联的频率输出，用于分析。
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公开(公告)号：US5872646A
公开(公告)日：1999-02-16
申请号：US811657
申请日：1997-03-05
CPC分类号： H04B10/60
摘要： A detector, such as a photodetector, is provided with a serial output and serial input capability so that a first plurality of pulses can be transmitted from the detector in a first preselected direction. The first plurality of pulses represent a coded pattern. When pulses are received by the receiver portion of the detector, the received second plurality of pulses is compared to the first plurality of pulses to determine whether or not the two pluralities of pulses represent precisely matched coded patterns. The use of coded patterns that comprise a plurality of bits, or pulses, significantly decreases the chance of a mis-identification of a received pulse as being representative of a reflected transmitted pulse.
摘要翻译： 诸如光电检测器的检测器具有串行输出和串行输入能力，使得可以在第一预选方向上从检测器发送第一多个脉冲。 第一组多个脉冲表示编码图案。 当脉冲被检测器的接收器部分接收时，将所接收的第二多个脉冲与第一多个脉冲进行比较，以确定两个多个脉冲是否代表精确匹配的编码图案。 包括多个位或脉冲的编码图案的使用显着地降低了接收到的脉冲的误识别代表反射的发射脉冲的机会。
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公开(公告)号：US07096729B2
公开(公告)日：2006-08-29
申请号：US10879223
申请日：2004-06-29
IPC分类号： G01F1/68
CPC分类号： G01F1/6847 , G01F1/6845
摘要： A disposable fluid flow sensor is disclosed herein, which generally includes a flow channel assembly comprising a flow channel tube in association with a disposable flow channel portion. A sensor die is located approximate to a thin interface or membrane formed from the disposable flow channel portion, such that the sensor die measures a flow of fluid flowing through the flow channel tube and the disposable flow channel portion of the flow channel assembly. Additionally, a substrate can be provided upon which the sensor die is formed and located. A seal can also be provided for sealing the disposable flow channel portion to the flow channel tube. Such a flow sensor can be implemented in the context of a “non-isolated” sensor die approach in which the sensor die, substrate and flow tube are assembled together into a complete disposable assembly, in which a thin interface does not cover the sensor die. The flow sensor can also be implemented in the context of an “isolated” sensor die approach in which a thin membrane material or thin interface prevents the fluid from touching the surface of the sensor die. In such an “isolated” configuration, the sensor die is not actually part of the disposable flow tube assembly. The only disposable portion in this approach is the flow tube itself.
摘要翻译： 本文公开了一次性流体流量传感器，其通常包括流动通道组件，其包括与一次性流动通道部分相关联的流动通道管。 传感器模具近似于由一次性流动通道部分形成的薄界面或膜，使得传感器模具测量流过流动通道管和流动通道组件的一次性流动通道部分的流体流。 另外，可以提供形成和定位传感器管芯的基板。 还可以提供密封以将一次性流动通道部分密封到流动通道管。 这种流量传感器可以在“非隔离”传感器管芯方法的上下文中实现，其中传感器管芯，衬底和流管组装在一起成为完整的一次性组件，其中薄界面不覆盖传感器模具 。 流量传感器还可以在“隔离”传感器模具方法的上下文中实现，其中薄膜材料或薄界面防止流体接触传感器管芯的表面。 在这种“隔离”结构中，传感器模具实际上不是一次性流管组件的一部分。 这种方法中唯一的一次性部分是流管本身。
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公开(公告)号：US06871537B1
公开(公告)日：2005-03-29
申请号：US10713497
申请日：2003-11-15
CPC分类号： G01F1/6847 , G01N25/18
摘要： A sensor method and system are disclosed. A fluid flow sensor can be provided, which measures the thermal conductivity of a fluid. The sensor itself can be configured to comprise one or more sensing element associated with a sensor substrate. A heater can be associated with said sensor wherein said heater provides heat to said fluid. A film component can also be provided that that isolates said fluid from said heater and said sensor, such that said film component conducts heat in a direction from said heater to said sensor, thereby forming a thermal coupling between said sensor, said heater and said fluid, which permits said sensor to determine a composition of said fluid by measuring thermal conductivity thereof without undesired losses of heat in other directions. The film component can be configured on or in the shape of a tubing or a flow channel.
摘要翻译： 公开了一种传感器方法和系统。 可以提供流体流量传感器，其测量流体的热导率。 传感器本身可以被配置为包括与传感器基板相关联的一个或多个感测元件。 加热器可以与所述传感器相关联，其中所述加热器向所述流体提供热量。 还可以提供一种薄膜部件，其将所述流体与所述加热器和所述传感器隔离，使得所述薄膜部件在从所述加热器到所述传感器的方向上传导热量，从而在所述传感器，所述加热器和所述流体之间形成热耦合 ，其允许所述传感器通过测量所述流体的热导率来确定所述流体的组成，而不会在其它方向上产生不希望的热损失。 膜部件可以配置在管状物或流动通道的形状上或者形状上。
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公开(公告)号：US6018159A
公开(公告)日：2000-01-25
申请号：US987818
申请日：1997-12-10
申请人： Richard A. Alderman , David A. Klein , Bo Su Chen
发明人： Richard A. Alderman , David A. Klein , Bo Su Chen
摘要： A photoelectric sensing unit, especially useful for determining the passage of clear bottles or other low contrast targets on a conveyor, contains two sensors and a signal processing unit to determine the signal differential. The signal differential is compared to a selected value and sensor output is enabled or disabled. High noise immunity, resistance to target reflection, and output reliability result. The unit may correct the selected value to account for environmental change and/or unit component performance. The unit can also figure the speed of passage of the bottles.
摘要翻译： 特别用于确定输送机上透明瓶或其他低对比度目标的通过的光电感测单元包含两个传感器和用于确定信号差分的信号处理单元。 将信号差分与选定值进行比较，并且传感器输出被使能或禁用。 高抗噪性，耐目标反射性和输出可靠性。 该单元可以更改所选择的值以考虑环境变化和/或单元组件的性能。 该装置还可以确定瓶子通过的速度。
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公开(公告)号：US6137351A
公开(公告)日：2000-10-24
申请号：US322091
申请日：1999-05-28
CPC分类号： H04L25/0282 , H04L25/0294
摘要： An interface circuit for interfacing a data bus with a current sinking sensor or a current sourcing sensor. An input terminal is connected between a cathode of a first diode and an anode of a second diode. The anode of the first diode is connected to a first input terminal of a comparator, such as a differential amplifier. The cathode of the second diode is connected to a second input of the comparator. Two pairs of in-series resistors are connected between a voltage supply. The anode of the first diode is connected between two resistors of the first pair of resistors. The cathode of the second diode is connected between two resistors of the other pair of resistors. An output of the comparator is connected to an output terminal. The interface circuit of this invention can be connected between an input circuit and an output circuit, to interface a sensor parameter and the corresponding input current or signal to the data bus and a corresponding output current or signal.
摘要翻译： 接口电路，用于将数据总线与电流吸收传感器或电流源传感器接口。 输入端子连接在第一二极管的阴极和第二二极管的阳极之间。 第一二极管的阳极连接到诸如差分放大器之类的比较器的第一输入端。 第二二极管的阴极连接到比较器的第二输入端。 两对串联电阻连接在电源之间。 第一二极管的阳极连接在第一对电阻器的两个电阻之间。 第二二极管的阴极连接在另一对电阻器的两个电阻之间。 比较器的输出端连接到输出端子。 本发明的接口电路可以连接在输入电路和输出电路之间，将传感器参数和相应的输入电流或信号连接到数据总线和相应的输出电流或信号。
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7.发明授权Catalytic adsorption and oxidation based carbon monoxide sensor and detection method 有权催化吸附和氧化一氧化碳传感器及检测方法公开(公告)号：US06550310B1
公开(公告)日：2003-04-22
申请号：US09724534
申请日：2000-11-28
申请人： Di-Jia Liu , Ulrich Bonne , Richard A. Alderman
发明人： Di-Jia Liu , Ulrich Bonne , Richard A. Alderman
IPC分类号： G01N700
CPC分类号： G01N33/004 , G01N25/30
摘要： A high-sensitivity carbon monoxide sensor is shown and described. The sensor includes a sensing element having a catalyst dispersed over a metal oxide layer. The catalyst is capable of adsorbing carbon monoxide. The sensing element can also include a heater and a temperature sensor. A flow sensor is provided for sensing a flow rate of gas directed at the sensing element. The signal processing module is coupled to the flow sensor and the temperature sensor. A flow sensor sends signals indicative of the flow rate to the processing module while the temperature sensor sends signals indicative of the temperature of the sensing element to the processing module. After carbon monoxide has been adsorbed onto the catalyst and metal oxide layer for a fixed time period, the heater is activated to heat the sensing element above the light-off temperature or at least as high as the oxidation temperature of the adsorbed carbon monoxide. As a result, an exothermic oxidation of the adsorbed carbon monoxide takes place, which results in an increase in the temperature of the sensing element. This increase in the temperature of the sensing element is used to determine the amount of accumulated adsorbed carbon monoxide which, in conjunction with the flow rate and the fixed time period, is used to calculate the carbon monoxide concentration in the gas flow.
摘要翻译： 显示和描述了高灵敏度一氧化碳传感器。 传感器包括具有分散在金属氧化物层上的催化剂的感测元件。 该催化剂能够吸附一氧化碳。 感测元件还可以包括加热器和温度传感器。 提供流量传感器用于感测指向感测元件的气体的流量。 信号处理模块耦合到流量传感器和温度传感器。 当温度传感器将表示感测元件的温度的信号发送到处理模块时，流量传感器将指示流量的信号发送到处理模块。 在一氧化碳已经吸附到催化剂和金属氧化物层上一段固定的时间之后，加热器被激活，以将感测元件加热到高于起燃温度或至少与吸附的一氧化碳的氧化温度一样高的温度。 结果，发生吸附的一氧化碳的放热氧化，这导致感测元件的温度升高。 感测元件的温度的这种增加用于确定累积吸附的一氧化碳的量，其结合流量和固定时间周期来计算气流中的一氧化碳浓度。
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公开(公告)号：US06474138B1
公开(公告)日：2002-11-05
申请号：US09724536
申请日：2000-11-28
申请人： Chin H. Chang , Ulrich Bonne , Richard A. Alderman
发明人： Chin H. Chang , Ulrich Bonne , Richard A. Alderman
IPC分类号： G01N2548
CPC分类号： G01N25/30 , G01N33/004 , Y02A50/243
摘要： A carbon monoxide sensor and method is shown and described. The sensor includes a sensing element that includes an adsorbent dispersed over a support material. The adsorbent is capable of exothermically adsorbing carbon monoxide. The sensor also includes a temperature sensor in contact with the sensing element and a signal processing module coupled to the temperature sensor. The temperature sensor communicates signals indicative of a temperature increase of the sensing element to the processing module, thereby indicating an adsorption and, therefore, a presence of carbon monoxide.
摘要翻译： 示出并描述了一氧化碳传感器和方法。 传感器包括感测元件，其包括分散在支撑材料上的吸附剂。 吸附剂能够放热吸附一氧化碳。 传感器还包括与感测元件接触的温度传感器和耦合到温度传感器的信号处理模块。 温度传感器将表示感测元件的温度升高的信号传达到处理模块，从而指示吸附，因此表示存在一氧化碳。
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公开(公告)号：US06354716B1
公开(公告)日：2002-03-12
申请号：US09631904
申请日：2000-08-04
申请人： Bo Su Chen , Richard A. Alderman
发明人： Bo Su Chen , Richard A. Alderman
IPC分类号： F21V1304
CPC分类号： G08B13/184 , G01V8/22
摘要： A light curtain device for creating a curtain of light between a reflective first location and a second location is disclosed. The device includes a light source adapted to provide a light column, a plurality of beam splitters, a plurality of light detectors, and an indicator arranged to indicate the interruption of the light column. The beam splitters are disposed to intersect the light column at intervals, and each of the beam splitters is adapted to direct a deflected portion of the light column toward the first location. The reflective first location receives the deflected portion of the light column from each of the beam splitters and reflects each deflected portion toward the second location. The light detectors are disposed adjacent the second location, with each of the light detectors being operatively associated with a corresponding one of the beam splitters and being positioned to the receive its corresponding deflected portion reflected by the reflector.
摘要翻译： 公开了一种用于在反射的第一位置和第二位置之间产生光幕的光幕装置。 该装置包括适于提供光柱的光源，多个分束器，多个光检测器和布置成指示光柱中断的指示器。 分束器设置成与光柱间隔地相交，并且每个分束器适于将光柱的偏转部分引向第一位置。 反射的第一位置从每个分束器接收光柱的偏转部分，并将每个偏转部分朝向第二位置反射。 光检测器设置在第二位置附近，每个光检测器与相应的一个分束器可操作地相关联，并且被定位成接收由反射器反射的相应的偏转部分。
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10.发明授权
公开(公告)号：US5828056A
公开(公告)日：1998-10-27
申请号：US742708
申请日：1996-11-01
CPC分类号： G01V8/22
摘要： A photodetector is provided with two light sources and a light sensitive component. The use of two light sources significantly reduces the opportunity of a surface feature, or abnormality, from focusing light back toward the light sensitive component in a manner that could possible cause the photodetector to misinterpret the intensified light as being indicative of the absence of an object in the detection zone. The light sources and light sensitive component can be arranged along an axis which is either parallel to the path of the objects to be detected or perpendicular to their path.
摘要翻译： 光电检测器设有两个光源和一个光敏元件。 使用两个光源显着地降低了表面特征或异常的可能性，从而将光聚焦到光敏部件的方式可能导致光电检测器误解强化光作为指示不存在物体 在检测区。 光源和光敏部件可以沿着与被检测物体的路径平行或垂直于其路径的轴线布置。
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