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    • 2. 发明专利
    • Ultrasonic substance detector
    • 超声波物体检测器
    • JPS5761971A
    • 1982-04-14
    • JP13583280
    • 1980-10-01
    • Tdk Corp
    • FUJITA KATSUOMITSUI SETSUOFUKAZAWA TAKESUKE
    • G01S7/526G01S13/52G01S13/538G01S15/04G01S15/50G01S15/52
    • G01S15/52
    • PURPOSE:To greatly release the limitation of a reflecting substance at a installing place, by storing the contents of a reflected wave in the steady state into a detector and constantly comparing between the reflected wave and storage contents to recognize the entry of a substance to be detected. CONSTITUTION:A reference pattern of the steady state is stored in a shift register 17 when a prescribed priod of time elapses after the application of a power source, and the detection is possible for a substance. If a shifting abnormal reflected substance enters an ultrasonic wave radiating region, the output of an FF15 which functions as a temporary storage circuit for received signals becomes different from the contents of the reference patterns within a register 17. Then an FF24 is set if no coincidence is obtained through a comparator 18 between the above-mentioned output and contents. With the prescribed times of arrival of such transmission/reception cycle, a terminal Q2 of a universal shift register 25 is roduced to H to actuate a light emitting diode 29, etc. in a detection display output circuit 27. Thus the detection of an abnormal reflecting substance is displayed. In such way, no obstacle exists as long as the substance to be detected is a stationary body such as a column, etc. exists within the ultrasonic wave radiating region. Thus the degree of freedom is increased for the installating place.
    • 目的:通过将反射波在稳定状态下的内容物保存在检测器中,大大减少安装场所反射物质的限制,不断比较反射波和储存内容物,以识别物质的进入 检测到。 构成:当在施加电源之后经过规定的时间段时,稳定状态的参考模式被存储在移位寄存器17中,并且可以对物质进行检测。 如果移动的异常反射物质进入超声波辐射区域,则用作接收信号的临时存储电路的FF15的输出与寄存器17内的参考图形的内容不同。然后如果不一致则设置FF24 通过上述输出和内容之间的比较器18获得。 在这种发送/接收周期的规定时间到达时,通用移位寄存器25的端子Q2被导向H以在检测显示输出电路27中致动发光二极管29等。因此,检测异常 反映物质被显示。 这样,只要被检测物质为柱等固定体等存在于超声波辐射区域内,则不存在障碍物。 因此,安装地点的自由度会增加。
    • 7. 发明专利
    • Periphery monitoring device
    • 周边监控设备
    • JP2009175045A
    • 2009-08-06
    • JP2008015285
    • 2008-01-25
    • Denso Corp株式会社デンソー
    • SAKUMA YASUSHISHIRAKI HIDENAO
    • G01S15/93B60R21/00
    • G01S15/931G01S15/52
    • PROBLEM TO BE SOLVED: To provide a periphery monitoring device capable of showing accurate information about a periphery of a vehicle.
      SOLUTION: An article at a periphery of a vehicle is detected in accordance with an output signal from an ultrasonic wave sensor 5 that is mounted on the vehicle and detects a reflection wave from the article. Before determining whether or not the article is a moving body in accordance with a change with lapse of time in a voltage of an output signal from the ultrasonic wave sensor 5, a distance to the article is computed for every predetermined time interval on the basis of the output signal of the ultrasonic wave sensor 5, and then it is determined whether or not the article is a moving body on the basis of a change of the distance (S110). When it is determined that the article is not moved, when there is a change with lapse of time in the voltage of the output signal from the ultrasonic wave sensor 5 about the identical article, it is determined that the article is a moving body. For example, a peak voltage difference of the output signal due to the lapse of time is computed as a fluctuation amount. When the fluctuation amount is greater than a predetermined threshold, it is determined that the article is the moving body (S120). When it is determined that the article is the moving body, the determined result is transmitted (S130).
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供能够显示关于车辆周边的准确信息的周边监视装置。 解决方案:根据来自安装在车辆上的超声波传感器5的输出信号检测车辆周边的物品,并检测来自物品的反射波。 在根据来自超声波传感器5的输出信号的电压中随时间的变化而确定物品是否是移动体之前,基于以下方式计算每个预定时间间隔的物品的距离: 超声波传感器5的输出信号,然后根据距离的变化确定物品是否是移动体(S110)。 当确定物品不移动时,当来自超声波传感器5的输出信号的电压在相同物品上的时间经过时间变化时,确定物品是移动体。 例如,计算出由于经过时间而导致的输出信号的峰值电压差作为变动量。 当波动量大于预定阈值时,确定物品是移动体(S120)。 当确定物品是移动体时,发送确定的结果(S130)。 版权所有(C)2009,JPO&INPIT