公开(公告)号：US07518546B2

公开(公告)日：2009-04-14

申请号：US11369724

申请日：2006-03-08

申请人： Jae-hyon Kim ,  Young-hwan Kim ,  Dmitriev S. Alexander ,  Andreyev V. Yuri ,  Seong-soo Lee

发明人： Jae-hyon Kim ,  Young-hwan Kim ,  Dmitriev S. Alexander ,  Andreyev V. Yuri ,  Seong-soo Lee

IPC分类号： G01S13/08

CPC分类号： G01S13/76

摘要： Provided is an apparatus and a method of measuring a distance between devices using a low clock frequency signal. The apparatus includes clock frequency generators, counters, a controller and a calculator for determining the distance based on clock signal overlap. Radio waves are transmitted and a number of clocks of a clock signal having a clock frequency b are counted, and if the transmitted radio waves are received again, a number of clocks of a clock signal having a clock frequency a are counted. If the clock signals having the clock frequencies a and b overlap with each other, counting of the numbers of the clocks of the clock signals having the frequencies b and a stops, and the distance is measured using the count values of the clock signals having the clock frequencies a and b. As a result, number of clocks of clock signals having low clock frequencies with a uniform difference can be counted to precisely measure a distance.

摘要翻译： 提供了使用低时钟频率信号来测量设备之间的距离的装置和方法。 该装置包括时钟频率发生器，计数器，控制器和用于基于时钟信号重叠确定距离的计算器。 对无线电波进行发送，对具有时钟频率b的时钟信号的时钟数进行计数，并且如果再次接收到发送的无线电波，则对具有时钟频率a的时钟信号的时钟数进行计数。 如果具有时钟频率a和b的时钟信号彼此重叠，则具有频率b和a的时钟信号的时钟数的计数停止，并且使用具有频率b和a的时钟信号的计数值来测量距离 时钟频率a和b。 结果，可以计数具有均匀差的具有低时钟频率的时钟信号的时钟数，以精确地测量距离。