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公开(公告)号：KR1020080099668A
公开(公告)日：2008-11-13
申请号：KR1020070045512
申请日：2007-05-10
Applicant: 전북대학교산학협력단
Abstract: An optical fiber sensor system utilizing a hybrid interferometer can sample with the phase difference of pi/2 accurately regardless of the external influence since all measurements are measured by using only one signal. An optical fiber sensor system utilizing a hybrid interferometer comprises a hybrid interferometer part including a first arm, a first phase modulator, a second phase modulator, and a second arm; a light source outputting the predetermined optical signal to a first optical coupling part; a first optical detecting part detecting a signal generated by combining the signal which is incident through the first optical coupling part and reflected from a first fiber coupling part of the first arm and the signal which is a second fiber coupling part of the second arm in the first optical coupling part; a second optical detecting part detecting a signal which is incident through the first optical coupling part and combined in a second optical coupling part after the first arm and the second arm; and an operation unit which performs sampling of the signal detected from the second optical detecting part by using the spot of the signal detected from the first optical detecting part in which zero-crossing occurs and computes physical quantity by using the phase change of the signal generated in the second phase modulator.
Abstract translation: 使用混合干涉仪的光纤传感器系统可以对pi / 2的相位差进行采样，而不管外部影响如何，因为所有的测量都只通过一个信号来测量。 利用混合干涉仪的光纤传感器系统包括混合干涉仪部分，其包括第一臂，第一相位调制器，第二相位调制器和第二臂; 将预定的光信号输出到第一光耦合部的光源; 第一光学检测部分，通过将通过第一光学耦合部件入射的信号和从第一臂的第一光纤耦合部分反射的信号与作为第二臂的第二光纤耦合部分的信号组合而产生的信号， 第一光耦合部分; 第二光学检测部，其检测通过所述第一光耦合部入射的信号，并在所述第一臂和所述第二臂之后的第二光耦合部中进行组合; 以及操作单元，其通过使用从其中发生过零点的第一光学检测部分检测到的信号的点来执行从第二光学检测部分检测的信号的采样，并且通过使用产生的信号的相位变化来计算物理量 在第二相调制器中。
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公开(公告)号：KR101224314B1
公开(公告)日：2013-01-21
申请号：KR1020110024821
申请日：2011-03-21
Applicant: 전북대학교산학협력단
Abstract: 본 발명은 생맥주 공급시스템에 구비되는 생맥주 터짐 알림장치에 관한 것으로써, 제어부가 생맥주의 거품발생으로 인한 터짐현상발생여부를 판단하여 경고신호출력부를 제어하기 때문에 사용자가 상기 경고신호출력부가 출력하는 경고신호를 통해 생맥주의 거품발생으로 인한 터짐현상발생여부를 보다 용이하게 인지하여 대처할 수 있는 효과가 있다.
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公开(公告)号：KR101073219B1
公开(公告)日：2011-10-12
申请号：KR1020080117181
申请日：2008-11-25
Applicant: 전북대학교산학협력단
IPC: E01F9/00
Abstract: 이를위한본 발명에따른도로표지판의이물질제거장치는, 도로표지판에진동을가하는진동부와; 상기진동부의동작을제어하는전력제어부를포함하여구성된다.
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公开(公告)号：KR1020150102784A
公开(公告)日：2015-09-08
申请号：KR1020140023782
申请日：2014-02-28
Applicant: 전북대학교산학협력단
Abstract: 본 발명은 광섬유 센서 헤드에 인가되는 물리량을 측정하기 위한 광세기 기반 광섬유 센서 헤드에 관한 것으로, 본 발명의 광세기 기반 광섬유 센서 헤드는 광 손실을 유도하기 위한 구조물, 구조물 사이에서 구조물 사이를 상하로 왕복하도록 배치되며 구조물을 왕복하는 단일 광섬유를 포함한다.
Abstract translation: 本发明涉及一种用于测量施加到光纤传感器头的物理量的基于发光强度的光纤传感器头。 本发明的基于发光强度的光纤传感器头包括：用于引起光损失的结构; 以及布置成在结构之间上下移动的单根光纤。
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Patent Agency Ranking
公开(公告)号：KR101090689B1
公开(公告)日：2011-12-08
申请号：KR1020100048983
申请日：2010-05-26
Applicant: 전북대학교산학협력단
Abstract: PURPOSE: An optical fiber current sensor and a current measuring method thereof are provided to simplify a signal processing procedure and save production costs. CONSTITUTION: An optical fiber coil is wound on a line(10) in which a current flows. An interference signal passing an optical fiber interference system is transmitted to the optical fiber coil. A first PD(Photo Diode)(131) detects a first interference signal which reciprocates in the optical fiber interference system to output a first detection result. A second PD(132) detects a second interference signal which reciprocates in the optical fiber interference system and the optical fiber coil to output a second detection result. An operation unit(190) calculates the amount of currents which flow in the line using the first and second detection results. A first FBG(124) reflects a specific wavelength of an interference signal outputted from the optical fiber interference system to the optical fiber interference system. A second FBG(151) reflects a first interference signal to the first PD as a first interference signal.
Abstract translation: 目的：提供光纤电流传感器及其电流测量方法，以简化信号处理程序并节省生产成本。 构成：光纤线圈缠绕在电流流过的线（10）上。 通过光纤干涉系统的干扰信号被传送到光纤线圈。 第一PD（光电二极管）（131）检测在光纤干涉系统中往复运动的第一干扰信号，以输出第一检测结果。 第二PD（132）检测在光纤干涉系统和光纤线圈中往复运动的第二干涉信号，以输出第二检测结果。 操作单元（190）使用第一和第二检测结果计算在线中流动的电流量。 第一FBG（124）将从光纤干涉系统输出的干扰信号的特定波长反射到光纤干涉系统。 第二FBG（151）将第一干扰信号作为第一干扰信号反射到第一PD。
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公开(公告)号：KR1020090118125A
公开(公告)日：2009-11-18
申请号：KR1020080043727
申请日：2008-05-13
Applicant: 전북대학교산학협력단
Abstract: PURPOSE: A fiber-optic sensor system using double pass Mach-Zehnder interferometer is provided to detect physical variation amount applied on a fiber optic line of a Michelson interferometer by utilizing the standard trigger signals of 90 degree phase difference. CONSTITUTION: A fiber-optic sensor system using double pass Mach-Zehnder interferometer comprises a Mach-Zender interferometer, a Michelson interferometer, an optical detecting part, and an operation unit. The Mach-Zender interferometer is made of a first arm(130) and a second arm(140). In the first arm, a polarization control part(105) is mounted. The polarization control part controls the polarized light of the light source between a first optical fiber coupler(101) and a second optical fiber coupler(103). In the second arm, a phase modulation part(107) is mounted. The phase modulation part performs phase modulation based on external signals between the first optical fiber coupler and the second optical fiber coupler. The Michelson interferometer comprises a fiber combiner. The optical detecting part is made of a first optical detector(121) and a second optical detector(123).
Abstract translation: 目的：提供使用双程马赫 - 策德尔干涉仪的光纤传感器系统，通过利用90度相位差的标准触发信号来检测施加在迈克尔逊干涉仪光纤线路上的物理变化量。 构成：使用双程马赫 - 曾德干涉仪的光纤传感器系统包括马赫 - 泽德干涉仪，迈克尔逊干涉仪，光学检测部分和操作单元。 马赫 - 泽德干涉仪由第一臂（130）和第二臂（140）制成。 在第一臂中安装有偏振控制部（105）。 偏振控制部控制第一光纤耦合器（101）和第二光纤耦合器（103）之间的光源的偏振光。 在第二臂中安装有相位调制部（107）。 相位调制部根据第一光纤耦合器与第二光纤耦合器之间的外部信号进行相位调制。 迈克尔逊干涉仪包括光纤组合器。 光学检测部分由第一光学检测器（121）和第二光学检测器（123）制成。
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公开(公告)号：KR100874428B1
公开(公告)日：2008-12-16
申请号：KR1020070045512
申请日：2007-05-10
Applicant: 전북대학교산학협력단
Abstract: An optical fiber sensor system utilizing a hybrid interferometer can sample with the phase difference of pi/2 accurately regardless of the external influence since all measurements are measured by using only one signal. An optical fiber sensor system utilizing a hybrid interferometer comprises a hybrid interferometer part including a first arm, a first phase modulator, a second phase modulator, and a second arm; a light source outputting the predetermined optical signal to a first optical coupling part; a first optical detecting part detecting a signal generated by combining the signal which is incident through the first optical coupling part and reflected from a first fiber coupling part of the first arm and the signal which is a second fiber coupling part of the second arm in the first optical coupling part; a second optical detecting part detecting a signal which is incident through the first optical coupling part and combined in a second optical coupling part after the first arm and the second arm; and an operation unit which performs sampling of the signal detected from the second optical detecting part by using the spot of the signal detected from the first optical detecting part in which zero-crossing occurs and computes physical quantity by using the phase change of the signal generated in the second phase modulator.
Abstract translation: 利用混合干涉仪的光纤传感器系统可以精确地采样π/ 2的相位差，而不管外部影响如何，因为所有测量都是仅使用一个信号测量的。 利用混合干涉仪的光纤传感器系统包括：混合干涉仪部分，其包括第一臂，第一相位调制器，第二相位调制器和第二臂; 光源，将预定光学信号输出到第一光学耦合部分; 第一光学检测部分，其检测通过将通过第一光学耦合部分入射并从第一臂的第一光纤耦合部分反射的信号与作为第二臂的第二光纤耦合部分的信号合并而产生的信号; 第一光学耦合部分; 第二光学检测部分，其检测通过第一光学耦合部分入射并且在第一臂和第二臂之后在第二光学耦合部分中组合的信号; 以及操作单元，其通过使用从其中发生过零点的第一光学检测部分检测到的信号的光点对从第二光学检测部分检测到的信号进行采样，并通过使用所生成的信号的相位变化来计算物理量 在第二阶段调制器中。
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公开(公告)号：KR100810145B1
公开(公告)日：2008-03-06
申请号：KR1020060096285
申请日：2006-09-29
Applicant: 전북대학교산학협력단
Abstract: A strain measurement system using a double-pass mach zehnder interferometer and a fiber grating sensor are provided to sample phase difference at the intervals of pi/2 regardless of the external influence by executing all measurement operations with one signal and to reduce the size by excluding an external trigger. A strain measurement system using a double-pass mach zehnder interferometer and a fiber grating sensor is composed of the mach zehnder interferometer having a first arm part(221) formed between first and second optical combining units(211,212) and a second arm part(222) having a phase modulation unit(223) modulating phase by using a phase modulation signal; a broad band source(201) outputting an optical signal to the first optical combining unit; a reflecting unit(240) connected to the second optical combining unit to reflect a portion of the signal outputted through the mach zehnder interferometer, to the mach zehnder interferometer again; a sensor grating unit(290) reflecting a signal with the specific wavelength of the signal outputted from the mach zehnder interferometer through the second optical combining unit; a first optical detecting unit(231) detecting a signal outputted from the sensor grating unit; a unidirectional waveguide unit(226) installed between the second optical combining unit and the sensor grating unit to prevent a signal reflected from the sensor grating unit from being transmitted to the second optical combining unit; a second optical detecting unit(232) detecting a signal reflected by the reflecting unit and outputted from the first optical combining unit through the mach zehnder interferometer; and a calculation unit(270) calculating strain by using phase change of the signal reflected from the sensor grating unit. The calculation unit executes sampling in a signal detected in the first optical combining unit, by using points where zero crossing is generated in the signal detected in the second optical combining unit.
Abstract translation: 提供使用双程马赫祖尔德干涉仪和光纤光栅传感器的应变测量系统，以pi / 2的间隔来采样相位差，而不管外部影响如何，通过使用一个信号执行所有测量操作，并通过排除来减小尺寸 一个外部触发器。 使用双程马赫泽德干涉仪和光纤光栅传感器的应变测量系统由马赫祖尔德干涉仪组成，其具有形成在第一和第二光学合成单元（211,212）和第二臂部分（222）之间的第一臂部分（221） ）具有通过使用相位调制信号调制相位的相位调制单元（223） 向第一光学合成单元输出光信号的宽带光源（201）; 连接到第二光学合成单元的反射单元（240），用于将通过马赫尚德干涉仪输出的信号的一部分再次反射到马赫祖德干涉仪; 传感器光栅单元（290），其通过所述第二光学合成单元反射从所述马赫尚德干涉仪输出的信号的特定波长的信号; 检测从所述传感器光栅单元输出的信号的第一光学检测单元（231） 安装在所述第二光学合成单元和所述传感器光栅单元之间的单向波导单元，用于防止从所述传感器光栅单元反射的信号传输到所述第二光学合成单元; 第二光学检测单元（232），其通过所述马赫祖尔德干涉仪检测由所述反射单元反射并从所述第一光学合成单元输出的信号; 以及计算单元（270），通过使用从所述传感器光栅单元反射的信号的相位变化来计算应变。 计算单元通过使用在第二光学合成单元中检测到的信号中产生过零点的点来执行在第一光学合成单元中检测到的信号中的采样。
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公开(公告)号：KR1020110129550A
公开(公告)日：2011-12-02
申请号：KR1020100048983
申请日：2010-05-26
Applicant: 전북대학교산학협력단
Abstract: PURPOSE: An optical fiber current sensor and a current measuring method thereof are provided to simplify a signal processing procedure and save production costs. CONSTITUTION: An optical fiber coil is wound on a line(10) in which a current flows. An interference signal passing an optical fiber interference system is transmitted to the optical fiber coil. A first PD(Photo Diode)(131) detects a first interference signal which reciprocates in the optical fiber interference system to output a first detection result. A second PD(132) detects a second interference signal which reciprocates in the optical fiber interference system and the optical fiber coil to output a second detection result. An operation unit(190) calculates the amount of currents which flow in the line using the first and second detection results. A first FBG(124) reflects a specific wavelength of an interference signal outputted from the optical fiber interference system to the optical fiber interference system. A second FBG(151) reflects a first interference signal to the first PD as a first interference signal.
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