Distance/speed meter and method for distance/speed measurement
    7.
    发明专利
    Distance/speed meter and method for distance/speed measurement 有权
    距离/速度计和距离/速度测量方法

    公开(公告)号:JP2006313080A

    公开(公告)日:2006-11-16

    申请号:JP2005134980

    申请日:2005-05-06

    Inventor: UENO TATSUYA

    Abstract: PROBLEM TO BE SOLVED: To measure the distance to the object to be measured and the speed of the object while taking advantage of the laser measurement device of a self adopted type.
    SOLUTION: The distance/speed meter comprises: the semiconductor laser 1; the laser driver 4 making repetitions alternatively the first oscillation interval in which the oscillation wave length is continuously increased and the second oscillation interval in which the oscillation wave length is continuously decreased in the semiconductor laser 1; the photo diode 2 for converting the optical output of the semiconductor laser 1 into the electric signal; the counting means 5-8 for counting the number of pulses based on the interference between the optical output of the semiconductor laser 1 and the return light from the object 11 included in the output of the photo diode 2 in the semiconductor laser 1 for each of the first oscillation interval and for the second oscillation interval; and the operation means 9 for calculating the distance to the object 11 and the speed of the object 11 from minimum oscillation wave length and the maximum oscillation wave length of the semiconductor laser 1 and the count results of the counting means.
    COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题:利用自身采用的激光测量装置来测量与待测物体的距离和物体的速度。 解决方案:距离/速度计包括:半导体激光器1; 激光驱动器4在半导体激光器1中交替地重复振荡波长连续增加的第一振荡间隔和振荡波长连续减小的第二振荡间隔; 用于将半导体激光器1的光输出转换为电信号的光电二极管2; 计数装置5-8,用于根据半导体激光器1的光输出与包括在半导体激光器1中的光电二极管2的输出中的物体11的返回光之间的干涉来计数脉冲数, 第一振荡间隔和第二振荡间隔; 以及用于从最小振荡波长和半导体激光器1的最大振荡波长计算到物体11的距离和物体11的速度的操作装置9以及计数装置的计数结果。 版权所有(C)2007,JPO&INPIT

    Frequency synthesis method and apparatus as well as the distance meter in distance meter

    公开(公告)号:JP2004522145A

    公开(公告)日:2004-07-22

    申请号:JP2002546245

    申请日:2001-11-08

    CPC classification number: G01S17/36 G01S7/4911 G01S7/4915

    Abstract: In a method and a device for carrying frequency synthesis, in particular in a distance measuring device based on the principle of evaluating the change over time in the phase of an electromagnetic radiation emitted by a radiation source and remitted by an object aimed at, a frequency, which is preferably furnished by a quartz oscillator, is regulated in a ring oscillator with N delay elements (V1, V2, V3, . . . , VN) to a desired first high frequency (F), which is used as a mixer frequency or as a modulation frequency. The signals at the N delay elements (V1, V2, V3, . . . , VN) are delivered to a multiplexer, which is switched over with a cadence that is equivalent to 2*N times the frequency of the low-frequency measurement signal to be evaluated to produce a modulation frequency or mixer frequency.

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