Security system
    21.
    发明公开
    Security system 审中-公开
    保安系统

    公开(公告)号:EP1326090A2

    公开(公告)日:2003-07-09

    申请号:EP02018291.1

    申请日:2002-08-23

    申请人: Hitachi, Ltd.

    IPC分类号: G01S13/56 G01S17/02 G08B13/18

    摘要: The invention relates to a device in which surroundings of a building (4) can be monitored using a sensor; when detecting an intruder, an object (7) can be detected even in the case of bad weather; and a predetermined area can be monitored using as few sensors as possible. The device includes a security system which emits a radio wave from a building (4) to a predetermined area outside the building (4) to detect an object (7), and on the basis of output of the object detecting unit (2), a judgment is made as to whether or not the object will intrude into the predetermined area.

    摘要翻译: 本发明涉及一种装置,其中建筑物(4)的周围可以使用传感器来监测; 当检测到入侵者时,即使在恶劣天气的情况下也可以检测到物体(7); 并且可以使用尽可能少的传感器来监视预定区域。 该设备包括安全系统,该安全系统从建筑物(4)发射无线电波到建筑物(4)外部的预定区域以检测物体(7),并且基于物体检测单元(2)的输出, 判断物体是否侵入预定区域。

    Distance measurement apparatus for vehicle
    27.
    发明公开
    Distance measurement apparatus for vehicle 失效
    EntfernungsmessgerätfürKraftfahrzeuge

    公开(公告)号:EP0686857A2

    公开(公告)日:1995-12-13

    申请号:EP95108772.5

    申请日:1995-06-07

    申请人: HITACHI, LTD.

    IPC分类号: G01S17/89 G01S17/93 G01S17/02

    CPC分类号: G01S17/936 G01S17/89

    摘要: The distance to a target object is measured by capturing the image developed in front of the driving vehicle by the image sensor, extracting the target object such as a vehicle running forward to which the distance is to be measured, and exposing a laser beam to the target object. The distance to the target object is measured by angular surveying, using an image sensor for capturing an image as a laser light detection part.

    摘要翻译: 通过拍摄通过图像传感器在驾驶车辆前方展开的图像来测量到目标物体的距离,提取目标对象,例如前方的目标物体,向前行驶距离将被测量,并将激光束曝光到 目标对象。 通过角度测量来测量到目标物体的距离,使用用于拍摄图像的图像传感器作为激光检测部件。

    Radar apparatus
    30.
    发明公开
    Radar apparatus 有权
    雷达装置

    公开(公告)号:EP2026098A1

    公开(公告)日:2009-02-18

    申请号:EP08013679.9

    申请日:2008-07-30

    申请人: Hitachi, Ltd.

    IPC分类号: G01S13/34 G01S13/24 G01S7/34

    摘要: A distance measuring apparatus comprising a transmission antenna (10) to radiate a transmission radio wave; a reception antenna (11) to receive a reflected signal from a target; an analog-to-digital converter (14) to perform an analog-to-digital conversion for converting a reception signal; and a signal processing unit (1) to process the converted signal and to detect the target, in which a transmission frequency of the transmission radio wave to be radiated is switched at a timing synchronized with a sampling frequency of the analog-to-digital conversion, the transmission frequency is switched in accordance with an arbitrary pattern within a frequency band, and the reception signal is rearranged in order on the basis of the arbitrary pattern at a time of the transmission to then be subject to a radar signal processing.

    摘要翻译: 一种距离测量装置,包括:发射天线(10),用于发射发射无线电波; 接收天线(11),用于接收来自目标的反射信号; 模数转换器(14),用于执行用于转换接收信号的模拟 - 数字转换; 和信号处理单元(1),用于处理转换后的信号并检测目标,其中在与模数转换的采样频率同步的定时切换要发射的发射无线电波的发射频率 根据频带内的任意模式切换发送频率,并且根据发送时的任意模式依次重新排列接收信号,然后对其进行雷达信号处理。