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公开(公告)号：US07800379B2
公开(公告)日：2010-09-21
申请号：US12326332
申请日：2008-12-02
申请人： Norberto Hernandez , Jesus Carmona , Esau Aguinaga , Manuel S. Sanchez , Cecilia Hernandez , Daniel J. Moreno , Mark Shost
发明人： Norberto Hernandez , Jesus Carmona , Esau Aguinaga , Manuel S. Sanchez , Cecilia Hernandez , Daniel J. Moreno , Mark Shost
IPC分类号： G01R27/26
CPC分类号： G01N33/2852 , G01N27/226
摘要： A sensing apparatus for determining a property of a fuel such as a gasoline and ethanol blend known as flex fuel includes an acetal plastic tube with an inlet, an outlet and a fuel passage in between. One property of the fuel is a dielectric constant. A pair of sensing plates are placed on opposite sides of the tube leaving the fuel passage unobstructed. A processing circuit on a printed circuit board (PCB) is located near to and is connected with the sensing plates. The circuit applies an excitation signal, senses a capacitance, and generates an output signal indicative of a property of the fuel. The sensed capacitance will increase with increasing concentration of ethanol in the fuel flowing through the passage. A shield for reducing EMI surrounds and encloses the sensing plates and the PCB. An interface connector allows the sensing apparatus to output the capacitance indicative signal to an engine controller or the like.
摘要翻译： 用于确定燃料（诸如称为柔性燃料的汽油和乙醇混合物）的燃料的特性的感测装置包括缩醛塑料管，其间具有入口，出口和燃料通道。 燃料的一个特性是介电常数。 一对感测板放置在管的相对侧上，使燃料通道畅通无阻。 印刷电路板（PCB）上的处理电路位于感测板附近并与传感板连接。 电路施加激励信号，感测电容，并产生指示燃料性质的输出信号。 感测到的电容将随着流经通道的燃料中乙醇浓度的增加而增加。 用于降低EMI的屏蔽包围传感板和PCB。 接口连接器允许感测装置将电容指示信号输出到发动机控制器等。
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公开(公告)号：US20090153154A1
公开(公告)日：2009-06-18
申请号：US12326332
申请日：2008-12-02
申请人： Norberto Hernandez , Jesus Carmona , Esau Aguinaga , Manuel S. Sanchez , Cecilia Hernandez , Daniel J. Moreno , Mark Shost
发明人： Norberto Hernandez , Jesus Carmona , Esau Aguinaga , Manuel S. Sanchez , Cecilia Hernandez , Daniel J. Moreno , Mark Shost
IPC分类号： G01R27/08
CPC分类号： G01N33/2852 , G01N27/226
摘要： A sensing apparatus for determining a property of a fuel such as a gasoline and ethanol blend known as flex fuel includes an acetal plastic tube with an inlet, an outlet and a fuel passage in between. One property of the fuel is a dielectric constant. A pair of sensing plates are placed on opposite sides of the tube leaving the fuel passage unobstructed. A processing circuit on a printed circuit board (PCB) is located near to and is connected with the sensing plates. The circuit applies an excitation signal, senses a capacitance, and generates an output signal indicative of a property of the fuel. The sensed capacitance will increase with increasing concentration of ethanol in the fuel flowing through the passage. A shield for reducing EMI surrounds and encloses the sensing plates and the PCB. An interface connector allows the sensing apparatus to output the capacitance indicative signal to an engine controller or the like.
摘要翻译： 用于确定燃料（诸如称为柔性燃料的汽油和乙醇混合物）的燃料的特性的感测装置包括缩醛塑料管，其间具有入口，出口和燃料通道。 燃料的一个特性是介电常数。 一对感测板放置在管的相对侧上，使燃料通道畅通无阻。 印刷电路板（PCB）上的处理电路位于感测板附近并与感测板连接。 电路施加激励信号，感测电容，并产生指示燃料性质的输出信号。 感测到的电容将随着流经通道的燃料中乙醇浓度的增加而增加。 用于降低EMI的屏蔽包围传感板和PCB。 接口连接器允许感测装置将电容指示信号输出到发动机控制器等。
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公开(公告)号：US20090153149A1
公开(公告)日：2009-06-18
申请号：US11954824
申请日：2007-12-12
IPC分类号： G01R27/26
CPC分类号： G01N33/2852 , G01N27/226
摘要： A sensing apparatus for determining a property of a fuel such as a gasoline and ethanol blend known as flex fuel includes an acetal plastic tube with an inlet, an outlet and a fuel passage in between. One property is a dielectric constant. A pair of semi-circular shaped sensing plates are placed around the tube in concentric relation therewith, leaving the fuel passage unobstructed. A processing circuit on a printed circuit board (PCB) is located near and connected with the sensing plates. The circuit applies an excitation signal, senses a capacitance, and generates an output signal indicative of a property of the fuel. A shield for reducing EMI surrounds and encloses the sensing plates and the PCB. The sensed capacitance will increase with increasing concentration of ethanol in the fuel flowing through the passage. An interface connector allows the sensing apparatus to output the indicative signal to an engine controller.
摘要翻译： 用于确定燃料（诸如称为柔性燃料的汽油和乙醇混合物）的燃料的特性的感测装置包括缩醛塑料管，其间具有入口，出口和燃料通道。 一种性质是介电常数。 一对半圆形检测板与管子同心地放置在管周围，使燃料通道畅通无阻。 印刷电路板（PCB）上的处理电路位于感测板附近并与感测板连接。 电路施加激励信号，感测电容，并产生指示燃料性质的输出信号。 用于降低EMI的屏蔽包围传感板和PCB。 感测到的电容将随着流经通道的燃料中乙醇浓度的增加而增加。 接口连接器允许感测装置将指示信号输出到发动机控制器。
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公开(公告)号：US20100145640A1
公开(公告)日：2010-06-10
申请号：US12331748
申请日：2008-12-10
申请人： Esau Aguinaga , Norberto Hernandez , Jesus Carmona
发明人： Esau Aguinaga , Norberto Hernandez , Jesus Carmona
IPC分类号： G01R27/26
CPC分类号： G01R27/2605 , G01R27/14 , G01R27/2611
摘要： A method is provided for estimating an electrical parameter of a circuit-under-test (e.g., resistance, capacitance and/or inductance). The method acquires samples during a plurality of charging cycles rather than during just one, which allows an extended overall time period to acquire such samples. The first step involves defining a major sampling period having a plurality of minor sampling periods. A number of steps are performed for each minor sampling period: applying an excitation signal to the circuit-under-test to produce a respective induced, response signal and acquiring a respective sample of the induced signal at a respective predetermined deferral time. In an embodiment where the circuit-under-test includes an unknown capacitance, the excitation signal may be a unit step while an increase in the induced signal is governed by a charging time constant, which itself is indicative of the unknown capacitive. The electrical parameter may be determined based on the acquired samples, which collectively constitute a composite response. The composite response is processed, for example, by fitting it to a normalized capacitive charging curve, to ascertain an estimate of the unknown capacitive.
摘要翻译： 提供了一种用于估计被测电路（例如电阻，电容和/或电感）的电参数的方法。 该方法在多个充电循环期间而不是仅在一个充电循环期间获取采样，这允许延长的整个时间周期来获取这样的采样。 第一步涉及定义具有多个次要采样周期的主要采样周期。 对于每个次要采样周期执行多个步骤：将激励信号施加到被测电路以产生相应的感应响应信号，并在相应的预定延迟时间获取感应信号的相应采样。 在被测电路包括未知电容的实施例中，激励信号可以是单位阶跃，而感应信号的增加由充电时间常数决定，充电时间常数本身表示未知电容。 可以基于获取的样本来确定电参数，这些样本共同构成复合响应。 复合响应例如通过将其拟合到归一化的容性充电曲线来进行处理，以确定未知电容的估计。
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公开(公告)号：US20090090179A1
公开(公告)日：2009-04-09
申请号：US11973179
申请日：2007-10-05
摘要： A fuel system sensor has an acetal substrate that does not corrode in fuel, and the substrate bears conductors that are connected to terminals partially embedded in the substrate. Various methods for forming the conductor paths on the acetal are disclosed. The terminals can be formed with thermal relief structure.
摘要翻译： 燃料系统传感器具有不会在燃料中腐蚀的缩醛基板，并且基板承载连接到部分地嵌入在基板中的端子的导体。 公开了在缩醛上形成导体路径的各种方法。 端子可以形成有热释放结构。
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公开(公告)号：US20080314128A1
公开(公告)日：2008-12-25
申请号：US11820276
申请日：2007-06-19
申请人： Jesus Carmona , Yingjie Lin
发明人： Jesus Carmona , Yingjie Lin
IPC分类号： G01N11/00
CPC分类号： G01N11/16 , F01M2011/148 , F16N2250/36
摘要： A viscosity sensor for, e.g., outputting a signal representing the viscosity of engine oil has one or more piezoelectric diaphragms disposed in a fluid chamber of a housing. An elongated amplification channel is formed in the housing and extends away from the chamber. The diaphragm can be excited to induce fluid movement that in turn induces the diaphragm to output a sensor signal representative of the viscosity of the fluid.
摘要翻译： 用于例如输出表示发动机油的粘度的信号的粘度传感器具有设置在壳体的流体室中的一个或多个压电隔膜。 在壳体中形成细长的放大通道，并且远离腔室延伸。 振动膜可被激发以引起流体运动，这又引起隔膜输出代表流体粘度的传感器信号。
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