Sesnsor for detecting a toxic or hazardous gas mixture and operating method
    1.
    发明申请
    Sesnsor for detecting a toxic or hazardous gas mixture and operating method 审中-公开
    用于检测有毒或有害气体混合物的Sesnsor和操作方法

    公开(公告)号:US20090029403A1

    公开(公告)日:2009-01-29

    申请号:US12078794

    申请日:2008-04-04

    IPC分类号: C12Q1/02 C12M1/34

    摘要: A sensor for detecting a gas mixture which substantially comprises air and contains one or a plurality of gases that exhibit a disadvantageous effect on living organisms, comprising: a sensor chip composed of silicon for reading out at least one signal which is generated at a sensitive substance given the presence of one or a plurality of target gases in the measurement gas, a sensitive substance applied on the sensor chip, comprising living cells, which respond to target gas, a signal processing unit for evaluating the signals of the Si chip.

    摘要翻译: 一种用于检测气体混合物的传感器,其基本上包括空气并且包含对活生物体具有不利影响的一种或多种气体,包括:由硅组成的传感器芯片,用于读出在敏感物质处产生的至少一种信号 考虑到测量气体中存在一种或多种目标气体,施加在传感器芯片上的敏感物质包括响应于目标气体的活细胞,用于评估Si芯片的信号的信号处理单元。

    Method for measuring gases and/or minimizing cross sensitivity in FET-based gas sensors
    2.
    发明授权
    Method for measuring gases and/or minimizing cross sensitivity in FET-based gas sensors 有权
    在基于FET的气体传感器中测量气体和/或最小化交叉灵敏度的方法

    公开(公告)号:US07946153B2

    公开(公告)日:2011-05-24

    申请号:US11587173

    申请日:2005-04-22

    IPC分类号: G01N7/00

    CPC分类号: G01N27/4143 G01N33/006

    摘要: A gas sensor based on a field effect transistor (“FET”) evaluates both a change in work function of a gas-sensitive layer of the FET and a change in the capacitance of the layer. Thus, two physically independent signals are read from the gas-sensitive layer, each signal representing a sensitivity to a different gas. This reduces the effect of cross-sensitivities; that is, of one gas on the target gas. The underlying physical mechanisms, the first causing a change in the work function in a reaction with gases and the second causing a change in the capacitance of the sensitive layer, are widely different. Because of this, the two parameters demonstrate different gas sensitivities. If the reactions to both gases are known, the effect of the interfering gas on the sensor signal can be compensated for, and with this the concentration of the target gas can be determined.

    摘要翻译: 基于场效应晶体管(“FET”)的气体传感器评估FET的气敏层的功函数变化和层的电容变化。 因此,从气体敏感层读取两个物理独立的信号,每个信号表示对不同气体的敏感性。 这降低了交叉敏感性的影响; 也就是目标气体上的一种气体。 潜在的物理机制,首先引起与气体反应的功函数的变化,第二个导致敏感层的电容变化的物理机制是不同的。 因此,这两个参数表现出不同的气体敏感性。 如果对两种气体的反应是已知的,则可以补偿干扰气体对传感器信号的影响,并且可以确定目标气体的浓度。

    Arrangement and method for identifying people
    3.
    发明申请
    Arrangement and method for identifying people 有权
    识别人的安排和方法

    公开(公告)号:US20090278659A1

    公开(公告)日:2009-11-12

    申请号:US12308901

    申请日:2007-06-06

    IPC分类号: G06F7/04

    CPC分类号: C12Q1/6813 A61B5/117

    摘要: A method for identifying people involves breathing respired air into a collector unit, trapping condensate from the respired air in the collector unit, introduction of the condensate by a same introduction to a DNA sensor unit, analysis of the condensate after a cell disruption, comparison of the result the data from a databank and output of the comparison result with analysis of the identity of a person.

    摘要翻译: 用于识别人的方法涉及将吸入的空气呼入收集器单元,从收集器单元中的呼吸空气捕获冷凝物,通过与DNA传感器单元相同的介绍引入冷凝物,在细胞破裂之后分析冷凝物 结果来自数据库的数据和比较结果的输出以及对个人身份的分析。

    Apparatus and Method for increasing the selectivity of fet-based gas sensors
    4.
    发明申请
    Apparatus and Method for increasing the selectivity of fet-based gas sensors 审中-公开
    用于增加基于胎面的气体传感器的选择性的装置和方法

    公开(公告)号:US20090211437A1

    公开(公告)日:2009-08-27

    申请号:US11587171

    申请日:2005-04-21

    IPC分类号: G01N27/414

    CPC分类号: G01N33/0014 G01N27/4143

    摘要: A FET gas sensor having a relatively low operating temperature, for example, room temperature, is free from cross sensitivities from interfering gases by a preceding in-line filter. The sensor's service life is substantially stabilizable by using fabric-like activated charcoal filters which can be regenerated by a moderate temperature increase, and by limiting the diffusion of the analyte gas, which is made possible by the relatively small amount of gas detectable on the sensitive layer of the sensor. This substantially increases the service life of the filters. The gas sensor eliminates cross sensitivities to thereby increase the detection reliability thereof. Also, the gas sensor has relative long term stability and is economical to build. The gas sensor can read relatively weak signals generated by gas-sensitive layers, for example, without other stronger gas signals interfering with the weak signals.

    摘要翻译: 具有较低工作温度(例如室温)的FET气体传感器不受前面的在线过滤器的干扰气体的交叉敏感性。 传感器的使用寿命通过使用织物样的活性炭过滤器可以基本上稳定,该过滤器可以通过适度的温度升高再生,并且通过限制分析物气体的扩散,这是通过敏感的可检测的相对少量的气体 传感器层。 这大大增加了过滤器的使用寿命。 气体传感器消除了交叉敏感度,从而提高了其检测可靠性。 此外,气体传感器具有相对的长期稳定性并且构建经济。 气体传感器可以读取由气体敏感层产生的相对较弱的信号,例如,没有其他较强气体信号干扰弱信号。

    Apparatus and method for increasing the selectivity of FET-based gas sensors
    5.
    发明授权
    Apparatus and method for increasing the selectivity of FET-based gas sensors 有权
    提高基于FET的气体传感器选择性的装置和方法

    公开(公告)号:US07992426B2

    公开(公告)日:2011-08-09

    申请号:US11587171

    申请日:2005-04-21

    IPC分类号: G01N33/00 G01N27/414

    CPC分类号: G01N33/0014 G01N27/4143

    摘要: A FET gas sensor having a relatively low operating temperature, for example, room temperature, is free from cross sensitivities from interfering gases by a preceding in-line filter. The sensor's service life is substantially stabilizable by using fabric-like activated charcoal filters which can be regenerated by a moderate temperature increase, and by limiting the diffusion of the analyte gas, which is made possible by the relatively small amount of gas detectable on the sensitive layer of the sensor. This substantially increases the service life of the filters. The gas sensor eliminates cross sensitivities to thereby increase the detection reliability thereof. Also, the gas sensor has relative long term stability and is economical to build. The gas sensor can read relatively weak signals generated by gas-sensitive layers, for example, without other stronger gas signals interfering with the weak signals.

    摘要翻译: 具有较低工作温度(例如室温)的FET气体传感器不受前面的在线过滤器的干扰气体的交叉敏感性。 传感器的使用寿命通过使用织物样的活性炭过滤器可以基本上稳定,该过滤器可以通过适度的温度升高再生,并且通过限制分析物气体的扩散,这是通过敏感的可检测的相对少量的气体 传感器层。 这大大增加了过滤器的使用寿命。 气体传感器消除了交叉敏感度,从而提高了其检测可靠性。 此外,气体传感器具有相对的长期稳定性并且构建经济。 气体传感器可以读取由气体敏感层产生的相对较弱的信号,例如,没有其他较强气体信号干扰弱信号。

    Gas sensitive field-effect-transistor
    6.
    发明授权
    Gas sensitive field-effect-transistor 有权
    气体敏感场效应晶体管

    公开(公告)号:US07772617B2

    公开(公告)日:2010-08-10

    申请号:US11393371

    申请日:2006-03-30

    IPC分类号: G01N27/414

    CPC分类号: G01N27/4143

    摘要: A gas sensitive field effect transistor comprises a semiconductor substrate that includes a capacitance well, and source and drain regions of a field effect transistor. A gate of the field effect transistor is separated from the semiconductor substrate by an insulator, and a gas sensitive layer separated from the gate by an air gap. The field effect transistor provides an output signal indicative of the presence of a target gas within the air gap to an amplifier, which provides an amplified output signal that is electrically coupled to the capacitance well.

    摘要翻译: 气体敏感场效应晶体管包括包括电容阱的半导体衬底以及场效应晶体管的源极和漏极区。 场效应晶体管的栅极通过绝缘体与半导体衬底分离,气敏层由气隙与栅极分离。 场效应晶体管提供指示空气间隙内存在目标气体到放大器的输出信号,放大器提供与电容阱电耦合的放大输出信号。

    apparatus and method for determining a chemical element
    9.
    发明申请
    apparatus and method for determining a chemical element 审中-公开
    用于确定化学元素的装置和方法

    公开(公告)号:US20060249401A1

    公开(公告)日:2006-11-09

    申请号:US10867177

    申请日:2004-06-14

    IPC分类号: G01N27/26

    CPC分类号: G01N27/4143

    摘要: Sensor for determining a chemical element and method for controlling such a sensor. The invention relates to a sensor (1) for determining a chemical element or a chemical compound (CO2) in a supplied gaseous medium with a reaction area (9), on and/or in which the element or the compound brings about a chemical reaction that changes a characteristic parameter (for example the work function), Version 3* of the reaction area (9), a sensor element (5) that is placed in the sensor (1) to detect the change in the characteristic parameter, a signal output (11) at which an output signal (UPS) corresponding to the chemical reaction detected by the sensor element can be detected as the measured variable, and a reaction control device (SC, 12) with an electrode system (10, 13) for applying a control voltage to affect a reaction in the reaction area (9). To be able to use the sensor more variably and more reliably, it is proposed to produce a surface topology of such dimensions that during operation, a moisture film (16) of deposited ambient moisture continuously coats the surface area of both the electrode system and the reaction area. Possibilities in particular are correction of long-term changes from the influence of surrounding gases, checking probe functionality, and selective adjustment to measure given chemical variables.

    摘要翻译: 用于确定化学元素的传感器和用于控制这种传感器的方法。 本发明涉及一种传感器(1),用于在所提供的具有反应区域(9)的气体介质中确定化学元素或化合物(CO 2),在该元件或/或其中元素 或该化合物引起改变反应区域(9)的特征参数(例如功函数)版本3 *的化学反应,放置在传感器(1)中的传感器元件(5),以检测 改变特性参数,可以检测与传感器元件检测到的与化学反应相对应的输出信号(U> PS )的信号输出(11)作为测量变量,反应控制 装置(SC,12),其具有用于施加控制电压以影响反应区域(9)中的反应的电极系统(10,13)。 为了能够更可变地和更可靠地使用传感器,提出了生产这样的尺寸的表面拓扑,即在操作期间,沉积的环境湿度的水分膜(16)连续地涂覆电极系统和 反应区域。 特别是可以纠正周围气体的长期变化,检查探测功能和选择性调整以测量给定的化学变量。