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    SAFE VISIBILITY-BASED METHOD AND SYSTEM FOR MEASURING AND ESTIMATING LIGHTING STANDARDS IN TUNNEL MIDSECTIONS
    14.
    发明公开
    SAFE VISIBILITY-BASED METHOD AND SYSTEM FOR MEASURING AND ESTIMATING LIGHTING STANDARDS IN TUNNEL MIDSECTIONS 审中-公开
    SICHERESVISIBILITÄTSBASIERTESVERFAHREN UND SYSTEM ZUR MESSUNG UND KALKULATION VON BELEUCHTUNGS在TUNNELMITTELTEILENSTANDARDS

    公开(公告)号：EP3182077A4

    公开(公告)日：2017-08-30

    申请号：EP15853741

    申请日：2015-10-15

    Applicant: UNIV BEIJING TECHNOLOGY ,  GUIZHOU EXPRESSWAY GROUP CO LTD

    Inventor： HU JIANGBI ,  WANG MENG ,  GUAN GUIPING ,  XIE MINGYU ,  CHANG XIANGZHEN ,  ZHANG XIAOQIN ,  GUO DA ,  MA WENQIAN ,  ZHANG YUANFENG ,  LI XIAOYU ,  GAO LINXI ,  GAO XIAOJUAN ,  LIU FENG

    IPC: G01J1/28 ,  E21D9/14 ,  G01J5/60

    CPC classification number: B60Q1/143 ,  E21F17/00 ,  F21S2/00 ,  F21W2131/101 ,  G06K9/00825 ,  H05B37/0218

    Abstract: This invention relates to an illumination standard calculation method for a tunnel middle section based on safe visual recognition: (a) Setting the light environment of the tunnel middle section; (b) Placing a target object in the tunnel middle section; (c) Making a driver drive a motor vehicle at different speeds toward the target object, and measuring the visual recognition distances D required by the driver to visually discover the target object at different speeds; (d) Resetting the average brightness L of the tunnel middle section and repeating the steps (b) and (c) to obtain a plurality of different sets of visual recognition distances D and corresponding brightness values L; (e) Using the S model to fit the data of the plurality of sets of visual recognition distances D and brightness values L to obtain the formula of the relational model of D and L to be L=0.683/(5.575-In(D)); (f) Substituting a safe stopping sight distance D 0 corresponding to a maximum speed limit of the tunnel into the model formula to obtain the dynamic minimum brightness value L 0 required for the tunnel middle section under this tunnel light environment. The method improves the accuracy of safety evaluation of the tunnel middle section brightness, and the method is simple and convenient, and provides a reference basis for the road traffic safety research. The invention also provides a system for implementing this method.

    Abstract translation: 本发明涉及基于安全视觉的隧道中段照明标准计算方法：（a）设置隧道中段的光环境; （b）将目标物放入隧道中段; （c）使驾驶员以不同速度朝向目标物体驱动机动车辆，并且测量驾驶员以不同速度目视发现目标物体所需的视觉识别距离D; （d）重置隧道中间部分的平均亮度L并重复步骤（b）和（c）以获得多组不同的视觉识别距离D和对应的亮度值L; （e）使用S模型来拟合多组视觉识别距离D和亮度值L的数据以获得D和L的关系模型的公式为L = 0.683 /（5.575-In（D） ）; （f）将对应隧道最高车速限制的安全停车视距D0代入模型公式中，得到该隧道灯环境下隧道中段所需的动态最小亮度值L0。 该方法提高了隧道中段亮度安全评估的准确性，方法简单方便，为道路交通安全研究提供了参考依据。 本发明还提供了用于实施该方法的系统。

    SYSTEM AND METHOD OF EXTENDING THE LINEAR DYNAMIC RANGE OF EVENT COUNTING
    16.
    发明公开
    SYSTEM AND METHOD OF EXTENDING THE LINEAR DYNAMIC RANGE OF EVENT COUNTING 审中-公开
    系统VERFAHREN ZURVERLÄNGERUNGDES LINEAREN DYNAMIKBEREICHS EINEREREIGNISZÄHLUNG

    公开(公告)号：EP2622313A2

    公开(公告)日：2013-08-07

    申请号：EP11831277.6

    申请日：2011-09-27

    Applicant: Purdue Research Foundation

    Inventor： SIMPSON, Garth, J. ,  KISSICK, David, Joseph ,  MUIR, Ryan

    IPC: G01J1/00 ,  G01J1/28 ,  G01T1/16

    CPC classification number: G06F19/707 ,  G01J1/16 ,  G01J1/42 ,  G01J2001/442 ,  G01T1/17

    Abstract: A method and apparatus for photon, ion or particle counting described that provides seven orders of magnitude of linear dynamic range (LDR) for a single detector. By explicitly considering the log-normal probability distribution in voltage transients as a function of the number of photons, ions or particles present, the binomial distribution of observed counts for a given threshold, the mean number of photons, ions or particles can be determined well beyond the conventional limit.

    Abstract translation: 所描述的用于光子，离子或粒子计数的方法和装置为单个检测器提供七个数量级的线性动态范围（LDR）。 通过明确考虑电压瞬变中的对数正态概率分布作为存在的光子，离子或粒子的数量的函数，可以很好地确定给定阈值，平均光子数，离子或粒子数的观测计数的二项分布 超出传统限制。

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