公开(公告)号：KR1020010064787A

公开(公告)日：2001-07-11

申请号：KR1019990059077

申请日：1999-12-18

Applicant: 한국표준과학연구원

Inventor： 권일범 ,  김치엽 ,  김민수 ,  이왕주

IPC: G01B9/02

Abstract: PURPOSE: An interferometer sensor for optical wave frequency modulated optical fiber and a measuring method of structure-strain therewith is provided to detect any physical property without any additional devices by counting the number of interference rings output from an interferometer sensor for a specified time and measure the strain of structures. CONSTITUTION: The method comprises first step attaching a probe of the interference type sensor to a measuring object, second step gaining an output signal for the interference type sensor periodically for a specified time, third step filtering data gained at the second step with a band - pass filter, a fourth step transforming a signal wave form to a square wave, fifth step counting the number of the square wave transformed at the fourth step and comparing the reference number without any strain to obtain and sixth step obtaining the strain by accumulating and substituting the accumulated N into a given formula.

Abstract translation: 目的：提供一种用于光波调制光纤的干涉仪传感器及其结构应变测量方法，用于通过对干涉仪传感器输出的干扰环的数量进行计时并检测任何物理特性，而无需任何附加设备 结构的应变。 构成：该方法包括：首先将干涉型传感器的探头附着在测量对象上，第二步在规定时间周期性地获得干涉型传感器的输出信号;第三步骤， 第四步骤将信号波形变换为方波，第五步对第四步转换的方波数进行计数，比较没有任何应变的参考数，得到第六步，通过积累和替换得到应变 累积N为给定公式。

公开(公告)号：KR100324118B1

公开(公告)日：2002-02-20

申请号：KR1019990059077

申请日：1999-12-18

Applicant: 한국표준과학연구원

Inventor： 권일범 ,  김치엽 ,  김민수 ,  이왕주

IPC: G01B9/02

Abstract: 본발명은광주파수변조광섬유간섭형센서및 이를이용한변형률측정방법에관한것으로, 특히톱니파형태로주파수가변조된빛을출력하는레이저기 (10)와; 상기레이저기(10)로부터입사된빛을감지광섬유(33)와기준광섬유 (34)로분기하는 2x2 광섬유연계기(32)와; 상기감지광섬유(33)와기준광섬유 (34)의단부에형성되며입사된빛을반사시키는거울코팅된반사면(33a,34a)과; 상기반사면(33a,34a)에의해되돌아나오는빛을검출하는광검출기(20)를구비하되; 상기감지광섬유(33)의길이가변형되면그 변형의크기와방향에따라일정한시간동안출력되는광신호의파형갯수가가변되는광주파수변조광섬유간섭형센서의출력신호를일정한시간동안주기적으로취득하고대역통과기로여과한후, 구형파로변환하여계수하면별도의장치를부가하지않고서도외부물리량의변화량과증감을손쉽게파악할수 있다.