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    • 1. 发明授权
    • Temperature sensor apparatus and method
    • 温度传感器装置及方法
    • US07131766B2
    • 2006-11-07
    • US10621140
    • 2003-07-16
    • Michel F. SultanCharles R. HarringtonDa Yu Wang
    • Michel F. SultanCharles R. HarringtonDa Yu Wang
    • G01K17/08G01K3/08G01K7/16G01J5/20
    • G01K7/42
    • A temperature sensor includes a membrane supported by a substrate and a circuit having elements for a substrate electrical resistance indicative of the temperature of a substrate and a membrane electrical resistance indicative of the temperature of a membrane. The substrate resistance and the membrane resistance are arranged in a bridge configuration to facilitate measurement of a differential voltage responsive to temperature change. The resulting temperature signal includes a first varying portion and a second varying portion. A controller receives a temperature signal from sensor, eliminates the second varying portion and generates a temperature value based on the based on the first varying portion. In this manner, the sensor provides an improved, fast response to changes in the surrounding temperature.
    • 温度传感器包括由衬底支撑的膜和具有表示衬底温度的衬底电阻的元件和表示膜的温度的膜电阻的电路。 衬底电阻和膜电阻被布置成桥结构,以便于响应于温度变化的差分电压的测量。 所产生的温度信号包括第一变化部分和第二变化部分。 控制器从传感器接收温度信号,消除第二变化部分并基于第一变化部分产生温度值。 以这种方式,传感器对周围温度的变化提供了改进的,快速的响应。
    • 3. 发明授权
    • Systems and methods for sensing an ammonia concentration in exhaust gases
    • 用于检测废气中氨浓度的系统和方法
    • US07975537B2
    • 2011-07-12
    • US12109405
    • 2008-04-25
    • Da Yu WangSheng Yao
    • Da Yu WangSheng Yao
    • G01M15/10
    • G01N33/0054Y02A50/246
    • Systems and methods for determining an NH3 concentration in exhaust gases from an engine are provided. In one exemplary embodiment, a method includes generating a first signal from an NH3 sensor fluidly communicating with the exhaust gases. The method further includes generating a second signal from an air humidity sensor disposed proximate to an air intake manifold of the engine indicating a humidity level. The method further includes determining an air/fuel ratio associated with the engine. The method further includes determining an NH3 deviation value in a calibration table based on the second signal and the air/fuel ratio, utilizing a controller. The method further includes determining an NH3 concentration value based on the first signal and the NH3 deviation value, utilizing the controller. The NH3 concentration value is indicative of the NH3 concentration in the exhaust gases. The method further includes storing the NH3 concentration value in a memory device, utilizing the controller.
    • 提供了用于确定来自发动机的废气中的NH 3浓度的系统和方法。 在一个示例性实施例中,一种方法包括从与废气流体连通的NH 3传感器产生第一信号。 该方法还包括从布置在发动机的进气歧管附近的空气湿度传感器产生指示湿度水平的第二信号。 该方法还包括确定与发动机相关联的空气/燃料比。 该方法还包括利用控制器基于第二信号和空/燃比确定校准表中的NH 3偏差值。 该方法还包括利用控制器基于第一信号和NH3偏差值确定NH 3浓度值。 NH3浓度值表示废气中的NH 3浓度。 该方法还包括利用控制器将NH 3浓度值存储在存储器件中。
    • 7. 发明授权
    • Sensor and sensing method
    • 传感器和传感方法
    • US08658013B2
    • 2014-02-25
    • US11292179
    • 2005-12-01
    • Da Yu WangWalter Thomas SymonsRobert Jerome FarhatJohn E. KirwanJoachim KupeKenneth D. Mowery
    • Da Yu WangWalter Thomas SymonsRobert Jerome FarhatJohn E. KirwanJoachim KupeKenneth D. Mowery
    • G01N27/409G01N27/41
    • G01N27/419H01M8/04089H01M8/0618
    • A sensor includes an oxygen pump cell; an oxygen pump chamber; an emf cell; a reference chamber providing a fluid connection to the reference gas; gas channels in fluid communication with the pump and emf electrodes, the reference gas comprising reformate produced by a fuel reformer fueled by an air-fuel gas mixture having an air-fuel ratio; a reformer electronic control module; a sensor electronic control module; a heater; a temperature sensor disposed in communication with the heater and the sensor control module for maintaining the sensor at a desired operating temperature; a closed loop controlled operation amplifier in electrical communication with the sensor, whereby the oxygen pump cell provides sufficient oxygen ions to oxidize an incoming diffusion-limiting fuel flux to the emf cell and maintain a constant emf at the emf cell, and wherein a current value represents an equivalent to the air-fuel ratio of the air-fuel gas mixture.
    • 传感器包括氧气泵电池; 氧气泵室; 电磁场; 提供与参考气体的流体连接的参考室; 与泵和emf电极流体连通的气体通道,所述参考气体包括由具有空燃比的空气 - 燃料气体混合物燃料的燃料重整器产生的重整产物; 重整器电子控制模块; 传感器电子控制模块; 加热器 与所述加热器和所述传感器控制模块连通的温度传感器,用于将所述传感器保持在期望的工作温度; 与所述传感器电连通的闭环控制运算放大器,由此所述氧泵单元提供足够的氧离子以将进入的扩散限制性燃料通量氧化到所述电磁室并且在所述电磁场处保持恒定的电动势,并且其中电流值 表示空气 - 燃料气体混合物的空燃比。