Fluorescence optical fiber measurement system based on an advanced Neural Network (NN) ensemble algorithm

2011 ◽  
Author(s):  
Yutian Wang ◽  
Wang Yingchao ◽  
Yang Shiying
Keyword(s):  
Neural Network ◽  
Optical Fiber ◽  
Measurement System ◽  
Ensemble Algorithm ◽  
Optical Fiber Measurement

Optical fiber measurement system for thickness of water film

2015 ◽  
Vol 23 (10) ◽  
pp. 2747-2754 ◽  
Author(s):  
张小栋 ZHANG Xiao-dong ◽  
郭琦 GUO Qi ◽  
牛杭 NIU Hang
Keyword(s):  
Optical Fiber ◽  
Measurement System ◽  
Water Film ◽  
Optical Fiber Measurement

scholarly journals An Optical Fiber Measurement System for Blade Tip Clearance of Engine

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Jia Binghui ◽  
He Lei
Keyword(s):  
Optical Fiber ◽  
Measurement System ◽  
High Speed ◽  
Dynamic Performance ◽  
Measurement Range ◽  
Tip Clearance ◽  
Processing Unit ◽  
Blade Tip ◽  
Optical Fiber Measurement ◽  
Blade Tip Clearance

The benefits of reducing the tip clearance have been receiving many scholars’ attention all the time, which bring turbine efficiency increasing, emissions reduction, payloads increasing, and mission range abilities extension. In order to gain the blade tip clearance dynamically, a prototype optical fiber measurement system was built and tested based on the rotor test rig. The optical fiber tip clearance measurement system consists of the reflective intensity-modulated optical fiber bundle (sensor), main signal processing unit, high-speed data acquisition card, and a computer. The static performance and dynamic performance experiments were conducted to verify the performance of the system we designed. In addition, the results show that the accuracy of the system is 25 μm or better; the stability of the measurement system was evaluated in room temperature. The clearance measurement range is about 5 mm, and sensitivity of the sensor is 0.0733/mm. Furthermore, the typical tip clearance dynamic measurement experiment results show that the system has good dynamic response characteristics as well. The system will provide a new tool for engine health monitoring or fast active tip clearance control.

Research of BOTDR on Dike Strain Monitoring

2010 ◽  
Vol 36 ◽  
pp. 187-191 ◽  
Author(s):  
Qing Ming Zhang ◽  
Ping Yu Zhu ◽  
Shao Li Wang ◽  
Yuan Bao Leng
Keyword(s):  
Optical Fiber ◽  
Measurement System ◽  
Strain Monitoring ◽  
Important Direction ◽  
Distributed Optical Fiber ◽  
Optical Fiber Measurement

Based on briefly introducing the works of BOTDR, article studied on dike strain monitoring by using the distributed optical fiber measurement system produced by OMNISENS in Swiss. Builded the dike model, monitored the dike strain changes influenced by seepage and loading, we try to verify the feasibility that the distributed optical fiber measurement system can basically reflect the dike deformation. It can be an important direction for the development of dike strain monitoring.

Optical fiber measurement system for 3-D variation of turbine blade tip clearance

2018 ◽  
Vol 26 (7) ◽  
pp. 1578-1587 ◽  
Author(s):  
张小栋 ZHANG Xiao-dong ◽  
吴 冰 WU Bing ◽  
谢思莹 XIE Si-ying
Keyword(s):  
Optical Fiber ◽  
Turbine Blade ◽  
Measurement System ◽  
Tip Clearance ◽  
Blade Tip ◽  
Optical Fiber Measurement ◽  
Blade Tip Clearance

An open and low-cost optical-fiber measurement system for the optical detection of oxygen using a multifrequency phase-resolved method

2013 ◽  
Vol 176 ◽  
pp. 1110-1120 ◽  
Author(s):  
S. Medina-Rodríguez ◽  
A. de la Torre-Vega ◽  
J.F. Fernández-Sánchez ◽  
A. Fernández-Gutiérrez
Keyword(s):  
Optical Fiber ◽  
Measurement System ◽  
Low Cost ◽  
Optical Detection ◽  
Optical Fiber Measurement
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