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    • 4. 发明申请
    • TRAFFIC INFORMATION PROVIDING SYSTEM AND TERMINAL AND METHOD OF PROVIDING TRAFFIC INFORMATION USING THE SAME
    • 交通信息提供系统和终端以及使用该交通信息提供交通信息的方法
    • US20120116658A1
    • 2012-05-10
    • US13069935
    • 2011-03-23
    • Bum Tae LeeSung Wook HeoChi Nam OhMin Suk KimYoung Eon Ma
    • Bum Tae LeeSung Wook HeoChi Nam OhMin Suk KimYoung Eon Ma
    • G08G1/00G01C21/36
    • G08G1/096775G08G1/096741
    • The present invention provides a traffic information providing system and terminal and a method of providing traffic information. More specifically, the traffic information providing system includes a first module, within a vehicle, which is configured to receive a range associated with a route calculated by a terminal from a web server, wherein a plurality of ranges are previously set based on a traveling route, a specific region and a present position. Additionally the present invention also includes a second module that is configured to receive a traffic information request for any one of a plurality of ranges from the terminal via a command. A third module is configured to collect traffic information within the provided range corresponding to the command. Upon doing so the second module transmits the traffic information collected by the third module to the traffic information providing terminal to be conveyed to the driver.
    • 本发明提供了一种交通信息提供系统和终端以及提供交通信息的方法。 更具体地,交通信息提供系统包括车辆内的第一模块,其被配置为从网络服务器接收与终端计算出的路线相关联的范围,其中,基于行驶路线预先设定多个范围 ,特定区域和当前位置。 此外,本发明还包括第二模块,其被配置为经由命令从终端接收多个范围中的任何一个的交通信息请求。 第三模块被配置为在与该命令对应的所提供的范围内收集交通信息。 这样,第二模块将由第三模块收集的交通信息传送到要传送给驾驶员的交通信息提供终端。
    • 8. 发明授权
    • Method for monitoring the size variation and the focus shift of a weld pool in laser welding
    • 用于监测激光焊接中焊池的尺寸变化和聚焦位移的方法
    • US06555780B1
    • 2003-04-29
    • US10006140
    • 2001-12-10
    • Cheol-Jung KimSung-Hoon BaikMin-Suk KimChin-Man Chung
    • Cheol-Jung KimSung-Hoon BaikMin-Suk KimChin-Man Chung
    • B23K2620
    • B23K26/032B23K26/03B23K26/034
    • In a laser welding, a laser beam is focused on a workpiece by a focusing lens or lenses. The focusing lens or lenses image an aperture liming the size of the laser beam on the workpiece and the size of focused laser beam is the image size of the aperture on the workpiece at the wavelength of the laser. A weld pool is generated by the interaction of the focused laser beam and the workpiece. Due to the thermal conduction of the workpiece, the size of the weld pool is generally not the same as the size of the focused laser beam and varies with the power of the laser or with the focus shift of the focusing lens or lenses. The weld pool irradiates a thermal radiation. The thermal radiation is measured back through the focusing lens or lenses and through the aperture limiting the size of the laser beam or any other aperture limiting a size of the thermal radiation to be measured in three spectral bands with single element detectors. Due to the chromatic aberration of the focusing lens or lenses, the transmittance of each spectral band of the thermal radiation varies with the size variation and with the focus position of a weld pool and the spectral band signals measured with single-element detectors vary if the size and/or the focus position of a weld pool varies. However, the chromatic aberration of the focusing lens or lenses is usually unknown and is not easy to measure. A method to monitor the size variation and/or the focus position of a weld pool is disclosed wherein the effects of the chromatic aberration are measured experimentally and the size variation of a weld pool is monitored independently from the focus shift of the focusing lens or lenses and the focus position of a weld pool is monitored independently from the power variation of the laser.
    • 在激光焊接中,激光束通过聚焦透镜聚焦在工件上。 聚焦透镜或透镜对激光束在工件上的尺寸进行成像,并且聚焦激光束的尺寸是在激光波长处工件上的孔径的图像尺寸。 焊池由聚焦激光束与工件的相互作用产生。 由于工件的热传导,熔池的尺寸通常与聚焦的激光束的尺寸不同,并随着激光的功率或聚焦透镜的聚焦偏移而变化。 焊接池照射热辐射。 通过聚焦透镜或透镜测量热辐射,并通过孔径限制激光束或任何其他孔径的尺寸,以单个元件检测器限制三个光谱带中待测量的热辐射的尺寸。 由于聚焦透镜或透镜的色差,热辐射的每个光谱带的透射率随着尺寸变化和焊池的焦点位置而变化,并且用单元件检测器测量的光谱带信号变化如果 焊池的尺寸和/或焦点位置不同。 然而,聚焦透镜或透镜的色差通常是未知的并且不容易测量。 公开了一种用于监测焊池的尺寸变化和/或焦点位置的方法,其中色差的影响通过实验测量,并且独立于聚焦透镜或聚焦透镜的聚焦偏移监测焊池的尺寸变化 并且独立于激光器的功率变化监测焊池的聚焦位置。