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    Optical compensation in surveillance domes
    41.
    发明授权
    Optical compensation in surveillance domes 有权
    监视光学补偿

    公开(公告)号：US09122049B2

    公开(公告)日：2015-09-01

    申请号：US12981659

    申请日：2010-12-30

    申请人： Prateek Jain ,  David Campbell

    发明人： Prateek Jain ,  David Campbell

    IPC分类号： H04N7/18 ,  G02B27/00 ,  G02B27/42

    CPC分类号： G02B27/0025 ,  G02B27/0037 ,  G02B27/4216

    摘要： Techniques are discussed for correcting optical aberrations that exist in surveillance domes that have spherical and non-spherical parts. For example, the image quality of a surveillance camera is reduced when it focuses on an object through a non-spherical base of a surveillance dome. This image quality reduction could potentially compromise the security of the area monitored by the surveillance camera by failing to provide enough detail to identify individuals or other objects of interest. Utilizing a corrective optical element to provide curvature to a wavefront that travels through the non-spherical base, however, helps preserve the image quality of the camera and thereby helps maintain the integrity of the surveillance system.

    摘要翻译： 讨论了用于校正存在于具有球形和非球形部分的监视穹顶中的光学像差的技术。 例如，当监视摄像机通过监视穹顶的非球形基座对焦在物体上时，图像质量被降低。 这种图像质量降低可能潜在地损害由监控摄像机监视的区域的安全性，因为未能提供足够的细节来识别个人或其他感兴趣的对象。 然而，利用校正光学元件来提供穿过非球形基座的波前的曲率，有助于保持相机的图像质量，从而有助于维持监视系统的完整性。

    Method and equipment for detecting sealing deficiencies in drainage and vent systems for buildings
    44.
    发明授权
    Method and equipment for detecting sealing deficiencies in drainage and vent systems for buildings 有权
    用于检测建筑物排水和排气系统密封缺陷的方法和设备

    公开(公告)号：US08336368B2

    公开(公告)日：2012-12-25

    申请号：US12441122

    申请日：2007-09-12

    申请人： John Swaffield ,  David Campbell ,  Lynne Jack ,  Michael Gormley

    发明人： John Swaffield ,  David Campbell ,  Lynne Jack ,  Michael Gormley

    IPC分类号： G01M3/28

    CPC分类号： E03B7/003 ,  G01M3/243 ,  G01M3/2815

    摘要： The method includes the following steps—introducing a low amplitude air pressure transient into the drainage and vent system of a building in order to propagate a pressure wave from a fitting (6) into a stack (1) and the network of the drainage system;—recording the passage of the transient by use of an air pressure transducer (7) located near the fitting (6) or introduction area of the transient;—establishing a pressure versus time signature recorded by the pressure transducer (7) and sending those signals to a central data acquisition system;—the pressure transient is propagated throughout the network at an acoustic velocity and is reflected by each and every pipe termination of the network so as to establish a characteristic reflection coefficient for each pipe termination; —the characteristic reflection coefficient is compared with testing results performed initially in a perfect network with no dry trap defects or leakages and in case a different signature is of the pressure trace is recorded, the point of diversion will be determined at the time at which the reflection from the altered pipe end termination arrives at the air pressure transducer so that the comparison of this direct trace with the stored defect free signature yields that time and, as the wave speed is known, the determination of the distance from the pressure transducer to the defective trap or seal.

    摘要翻译： 该方法包括以下步骤：将低振幅气压瞬变引入建筑物的排水和排气系统，以将压力波从配件（6）传播到堆（1）和排水系统的网络; - 通过使用位于配件（6）附近的空气压力传感器（7）或瞬态的引入区域来记录瞬态通过; - 建立由压力传感器（7）记录的压力与时间签名并发送这些信号 到中央数据采集系统; - 压力瞬变以声速传播到整个网络，并被网络的每个管终端反射，以建立每个管终端的特征反射系数; 将特征反射系数与最初在没有干阱缺陷或泄漏的完美网络中执行的测试结果进行比较，并且如果记录了不同的签名是压力迹线，则转移点将在 来自改变的管端终端的反射到达空气压力传感器，使得该直接迹线与存储的无缺陷签名的比较产生该时间，并且随着波速已知，确定从压力传感器到 陷阱或密封有缺陷。