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    • 1. 发明授权
    • Distance measuring apparatus
    • 距离测量仪
    • US5828443A
    • 1998-10-27
    • US607512
    • 1996-02-27
    • Hiroshi FujiokaShoichi Tanaka
    • Hiroshi FujiokaShoichi Tanaka
    • G01S7/48B60Q1/52G01S7/497G01S17/10G01S17/93G01C3/08G01S13/08
    • G01S17/936B60Q9/008G01S7/497G01S17/105
    • Disclosed herein is a distance measuring apparatus comprising an irradiation unit for generating an electromagnetic wave, a receiving unit for receiving a reflected wave of the electromagnetic wave reflected by an object of measurement and generating a reception signal, and a propagation delay time measuring unit for measuring a propagation delay time by counting the number of pulses of a pulse train having a predetermined frequency. The propagation delay time is the time between the time that the irradiation unit irradiates the electromagnetic wave and the time that the reflected wave is received by the receiving unit. The vehicle distance measuring apparatus further comprises an electric discharge unit for performing an electric discharge from the time that the reflected wave is received by the receiving unit, a discharge-voltage measuring unit for measuring a discharge voltage of the discharge unit, and a distance computing unit for correcting the counted number of pulses, based on the propagation delay time and the measured discharge voltage, and computing a distance to the object.
    • 本发明公开了一种距离测量装置,包括:用于产生电磁波的照射单元;接收单元,用于接收由测量对象反射的电磁波的反射波并产生接收信号;以及传播延迟时间测量单元,用于测量 通过对具有预定频率的脉冲序列的脉冲数进行计数的传播延迟时间。 传播延迟时间是照射单元照射电磁波的时间与接收单元接收到反射波的时间之间的时间。 车辆距离测量装置还包括从接收单元接收到反射波的时间进行放电的放电单元,用于测量放电单元的放电电压的放电电压测量单元和距离计算 基于传播延迟时间和测量的放电电压来校正计数的脉冲数的单元,以及计算到物体的距离。
    • 2. 发明授权
    • Distance measuring apparatus and distance measuring method for a vehicle
    • 车辆距离测量装置和距离测量方法
    • US5739901A
    • 1998-04-14
    • US542842
    • 1995-10-13
    • Hiroshi FujiokaMasahira AkasuShoichi Tanaka
    • Hiroshi FujiokaMasahira AkasuShoichi Tanaka
    • G01S13/10G01S7/487G01S7/497G01S13/93G01S17/10G01S17/93G01C3/08
    • G01S17/936G01S17/10G01S7/4865G01S7/4873G01S7/497
    • A distance measuring apparatus for a vehicle including: an irradiating means for emitting and irradiating an electromagnetic wave; a receiving means for receiving a reflected wave produced when the electromagnetic wave is reflected by an obstacle and generating a receiving signal; a propagation delay time period measuring means provided with a comparison value set such that a value for a comparison reference is larger in a case in which a propagation delay time period from irradiating to receiving the electromagnetic wave is shorter than in a case in which the propagation delay time period thereof is longer for comparing the receiving signal with the comparison value, recognizing a time point at which the receiving signal is equal to or larger than the comparison value when the receiving signal is compared with the comparison value as a receive detecting time point and measuring the propagation delay time period from a time point at which the irradiating means irradiates the electromagnetic wave to the receive detecting time point; and a distance calculating means for calculating a distance between the obstacle and a driving vehicle based on the propagation delay time period.
    • 一种用于车辆的距离测量装置,包括:用于发射和照射电磁波的照射装置; 接收装置,用于接收当电磁波被障碍物反射并产生接收信号时产生的反射波; 传播延迟时间测量装置,其设置有比较值设定的比较值,使得在从照射到接收电磁波的传播延迟时间段比传播的情况下,比较参考值更大 将接收信号与比较值进行比较,延迟时间较长,当接收信号与比较值进行比较时,识别接收信号等于或大于比较值的时间点作为接收检测时间点 并测量从照射装置照射电磁波的时间点到接收检测时间点的传播延迟时间段; 以及距离计算装置,用于根据传播延迟时间周期计算障碍物与驾驶车辆之间的距离。