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.

公开(公告)号：KR100324117B1

公开(公告)日：2002-02-20

申请号：KR1019990056965

申请日：1999-12-11

Applicant: 한국표준과학연구원

Inventor： 권일범 ,  최만용 ,  문한규 ,  김민수

IPC: G01B11/16

Abstract: 본발명은변형률, 압력등의다양한물리량을측정하는전반사형외부패브리-페로광섬유센서와이를이용한변형률측정방법에관한것으로, 특히모세유리관(52)의일측에삽입, 고정된단일모드광섬유(51)와; 상기모세유리관(52)에삽입된단일모드광섬유(51)의단부와소정간격이격되게모세유리관(52)의타측에삽입, 고정된금속도금광섬유(53)와; 상기모세유리관(52)에삽입되지않은단일모드광섬유(51)의단부로광을조사하는레이저기와; 상기레이저기에의해입사되어단일모드광섬유(51) 및단일모드광섬유(51)와금속도금광섬유(53) 사이의공기간극(54)에의해단일모드광섬유(51)로되돌아오는광들의간섭신호프린지를감지하는광검출기를구비하되; 상기모세유리관(52)의길이방향으로변형이발생하면그 변형크기및 방향에따라상기공기간극(54)의간극길이(S)가변하면서간섭프린지의발생횟수와신호수준변화경향이가변된다. 이러한간섭프린지의발생횟수를이용하면측정대상물의변형크기를측정할수 있고, 또한공기간극(54)에서광퍼짐으로인해발생되는손실정도에따라신호수준이증가또는감쇠하는경향을이용하면변형방향(인장또는압축)도판별할수 있다.

公开(公告)号：KR1020010055697A

公开(公告)日：2001-07-04

申请号：KR1019990056965

申请日：1999-12-11

Applicant: 한국표준과학연구원

Inventor： 권일범 ,  최만용 ,  문한규 ,  김민수

IPC: G01B11/16

Abstract: PURPOSE: A total internal reflection type extrinsic fabry-perot interferometric fiber sensor and a method for measuring strain using the same are provided to measure the deformation magnitude of an object to be measured by using generation frequency of interference fringe and distinguish deformation direction. CONSTITUTION: A total internal reflection type extrinsic fabry-perot interferometric fiber sensor includes a single-mode fiber(51) inserted into one side of a capillary glass tube(52), a metal-plated fiber(53) inserted into the other side of the capillary glass tube to be separated from the end of the single-mode fiber, a laser irradiating light to the end of the single-mode fiber which have not inserted into the capillary glass tube, and a light detector sensing an interference fringe of the lights returned to the single-mode fiber by the single-mode fiber and an air gap(54) between the single-mode fiber and the metal-plated fiber, wherein the generation frequency and signal level change tendency are changed by changing the length of the air gap according to the change of the capillary glass tube in magnitude and direction if the change is generated in the capillary glass tube in longitudinal direction.

Abstract translation: 目的：提供一种全内反射型外在传播干涉光纤传感器和一种用于测量应变的方法，以通过使用干涉条纹的产生频率来测量待测物体的变形量，并区分变形方向。 构成：全内反射型外在传统干涉光纤传感器包括插入毛细管玻璃管（52）的一侧的单模光纤（51），插入到毛细管玻璃管（52）的另一侧的金属镀覆光纤 毛细管玻璃管与单模光纤的端部分离，激光将光照射到未插入毛细管玻璃管的单模光纤的端部，以及光检测器，其感测干涉条纹 单模光纤和单模光纤与金属镀覆光纤之间的空气隙（54）返回到单模光纤，其中发生频率和信号电平变化趋势通过改变 如果在毛细管玻璃管中沿纵向产生变化，则根据毛细管玻璃管的变化在大小和方向上的气隙。

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。