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    Apparatus and method for measuring vehicle speed and/or acceleration
    1.
    发明授权
    Apparatus and method for measuring vehicle speed and/or acceleration 有权
    用于测量车辆速度和/或加速度的装置和方法

    公开(公告)号：US06781110B2

    公开(公告)日：2004-08-24

    申请号：US09985296

    申请日：2001-11-02

    申请人： Craig S. Rendahl ,  John DiDomenico ,  Paul F. Kyle

    发明人： Craig S. Rendahl ,  John DiDomenico ,  Paul F. Kyle

    IPC分类号： H01J4014

    CPC分类号： G08G1/052 ,  G01P3/68

    摘要： An apparatus and method for measuring the speed and/or acceleration of a vehicle traveling on a vehicle path includes at least one radiation emitting device and at least two radiation receiving devices. Mirrors and/or beam splitter are used to direct at least one beam across the vehicle path. A controller calculates speed and/or acceleration of the vehicle in response to interruption of the at least one beam by a passing vehicle. The system can also include a mass sensor that detects the mass of the vehicle.

    摘要翻译： 用于测量在车辆路径上行驶的车辆的速度和/或加速度的装置和方法包括至少一个辐射发射装置和至少两个辐射接收装置。 反射镜和/或分束器用于将至少一个光束引导通过车辆路径。 控制器响应于通过的车辆对至少一个梁的中断而计算车辆的速度和/或加速度。 该系统还可以包括检测车辆质量的质量传感器。

    Catalytic converter function detection
    3.
    发明授权
    Catalytic converter function detection 有权
    催化转换器功能检测

    公开(公告)号：US06857262B2

    公开(公告)日：2005-02-22

    申请号：US09931603

    申请日：2001-08-16

    申请人： Craig S. Rendahl ,  Theresa A. Foley

    发明人： Craig S. Rendahl ,  Theresa A. Foley

    IPC分类号： F01N11/00 ,  F02D41/14 ,  F01N3/00

    CPC分类号： F02D41/1444 ,  F01N11/00 ,  F01N2550/02 ,  F02D41/1452 ,  F02D41/1459 ,  F02D2041/1468 ,  F02D2041/1472 ,  Y02T10/47

    摘要： A method and system detects the function of a catalytic converter in a vehicle using data received from an open path emissions sensor. The factors considered include whether the vehicle moving on a road is operating in a closed loop operating condition, whether the vehicle is operating in a cold start mode, and the hydrocarbon and other tailpipe emissions concentrations in an exhaust stream of the vehicle as measured by the open path sensor.

    摘要翻译： 一种方法和系统使用从开放路径排放传感器接收的数据来检测车辆中的催化转化器的功能。 所考虑的因素包括在道路上移动的车辆是否处于闭环操作状态，车辆是否以冷启动模式操作，以及车辆排气流中的碳氢化合物和其他排气排放浓度是否由 开路传感器

    Vehicular running loss detecting system
    5.
    发明授权
    Vehicular running loss detecting system 有权
    车辆运行损失检测系统

    公开(公告)号：US06230087B1

    公开(公告)日：2001-05-08

    申请号：US09502223

    申请日：2000-02-11

    申请人： John Didomenico ,  Craig S. Rendahl

    发明人： John Didomenico ,  Craig S. Rendahl

    IPC分类号： G01N2125

    CPC分类号： G01N21/3504 ,  G01N2021/3513

    摘要： A system and method for detecting running loss emissions is provided. A remote sensing device is used to detect vehicular exhaust emissions. The detected emissions are analyzed to determine a characteristic profile. The characteristic profile is processed to determine whether the profile is suspect or invalid. Invalid and suspect profiles are further analyzed to determine if running losses (e.g., leaky gas cap vapors, blow by emissions, etc.) are present. Profiles labeled as containing running losses may be further processed to generate statistical information, deliver notification to vehicle owners, or other actions.

    摘要翻译： 提供了一种检测运行损失排放的系统和方法。 遥感装置用于检测车辆废气排放。 分析检测到的排放物以确定特征轮廓。 处理特征配置文件以确定配置文件是可疑还是无效。 进一步分析无效和可疑的配置文件，以确定是否存在运行损失（例如，泄漏的气帽蒸汽，排放物的打击等）。 可以进一步处理标记为包含运行损失的配置文件，以生成统计信息，向车主发送通知或其他操作。

    Apparatus and method for measuring vehicle speed and/or acceleration
    6.
    发明授权
    Apparatus and method for measuring vehicle speed and/or acceleration 失效
    用于测量车辆速度和/或加速度的装置和方法

    公开(公告)号：US06750444B2

    公开(公告)日：2004-06-15

    申请号：US09846375

    申请日：2001-05-02

    申请人： Craig S. Rendahl ,  John DiDomenico ,  Paul F. Kyle

    发明人： Craig S. Rendahl ,  John DiDomenico ,  Paul F. Kyle

    IPC分类号： G01D534

    CPC分类号： G01P3/68 ,  G08G1/052

    摘要： An apparatus and method for measuring the speed and/or acceleration of a vehicle traveling on a vehicle path includes sender/detector units on one side of the vehicle path and corresponding retro-reflector matrix units on the other side of the vehicle path. A controller calculates speed and/or acceleration of the vehicle in response to interruption of the beam by a passing vehicle.

    摘要翻译： 用于测量在车辆路径上行驶的车辆的速度和/或加速度的装置和方法包括在车辆路径的一侧上的发送器/检测器单元和在车辆路径的另一侧上的对应的反向反射器矩阵单元。 控制器响应于通过的车辆对梁的中断而计算车辆的速度和/或加速度。

    Remote emissions sensing system with improved NOx detection
    8.
    发明授权
    Remote emissions sensing system with improved NOx detection 有权
    具有改进的NOx检测的远程排放感测系统

    公开(公告)号：US06983639B1

    公开(公告)日：2006-01-10

    申请号：US09709935

    申请日：2000-11-13

    申请人： John DiDomenico ,  Craig S. Rendahl ,  James Johnson

    发明人： John DiDomenico ,  Craig S. Rendahl ,  James Johnson

    IPC分类号： G01N7/00

    CPC分类号： G01N33/0037 ,  G01N21/274 ,  G01N21/33 ,  G01N2021/1793 ,  Y02A50/245

    摘要： A remote emissions sensing system is provided with NOx detection capability. First, a reading of the ambient NOx concentration is taken just prior to each vehicle passing through the system. This measurement accounts for any ambient NOx concentration that may be lingering from the exhaust of a previous vehicle. Next, the system takes a blocked reading when the vehicle is located in the path of the beam. This reading accounts for any ambient or system noise that may exist. Finally, the system takes a reading of the exhaust plume as the beam passes through the plume. A processor determines the portion of the reading due to the exhaust plume by subtracting the ambient and blocked readings from the exhaust plume reading. As a result, a more accurate exhaust concentration reading is provided. Additionally, the system may process exhaust plume readings only in a predetermined wavelength band associated with the known absorption spectrum of NOx so that data points for which there is no significant absorption of NOx may be eliminated. Thus, any noise or other interference in the non-absorptive wavelengths are minimized. Also, changes in the intensity of the radiation are compensated by subtracting a baseline intensity from each signal.

    摘要翻译： 远程排放物检测系统具有无检测能力。 首先，在每个车辆通过系统之前，正在读取环境NO x x浓度。 该测量可以考虑任何可能从先前的车辆的排气中挥发的环境NO 浓度。 接下来，当车辆位于梁的路径中时，系统采取阻挡读取。 该读数考虑到可能存在的任何环境或系统噪声。 最后，当束通过羽流时，系统读取排气羽流。 处理器通过从排气羽流读数中减去环境和阻塞的读数来确定由于排气羽流引起的读数的部分。 结果，提供了更准确的排气浓度读数。 另外，该系统可以仅处理与已知的NO x吸收光谱相关联的预定波长带中的排气羽流读数，使得不存在NO x的显着吸收的数据点， SUB>可以被消除。 因此，非吸收波长中的任何噪声或其他干扰被最小化。 此外，通过从每个信号减去基线强度来补偿辐射强度的变化。

    Method and system for detection of hydrocarbon species in a gas
    9.
    发明授权
    Method and system for detection of hydrocarbon species in a gas 有权
    用于检测气体中烃类物质的方法和系统

    公开(公告)号：US06789021B2

    公开(公告)日：2004-09-07

    申请号：US10075389

    申请日：2002-02-15

    申请人： Craig S. Rendahl ,  Theresa A. Foley

    发明人： Craig S. Rendahl ,  Theresa A. Foley

    IPC分类号： G01N2726

    CPC分类号： G01N33/0027 ,  G01M15/102 ,  G01N33/0047

    摘要： A method and system for measuring hydrocarbon content in a gas sample measures individual hydrocarbon concentrations in the gas sample and determines a total concentration based on the individual concentrations. The total concentration is validated and/or scaled by determining whether water interference may be occurring and either adjusting the total concentration or flagging the total concentration as invalid. The total concentration may also be adjusted to account for ambient conditions, such as temperature, pressure or relative humidity, as well as for potential double-counting of individual hydrocarbon species.

    摘要翻译： 用于测量气体样品中烃含量的方法和系统测量气体样品中的单个烃浓度，并基于各个浓度确定总浓度。 总浓度通过确定是否可能发生水分干扰并调整总浓度或将总浓度标记为无效来验证和/或缩放。 总浓度也可以调整为考虑环境条件，例如温度，压力或相对湿度，以及单个碳氢化合物种类的潜在双重计数。