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21. [Jeonnam Ilbo] Korea Institute of Optical Technology, commercialization of sensor system for railway safety monitoring

Writer : enitt

Date : 2022-04-13 11:46:23

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The Korea Optical Technology Institute has succeeded in developing the first line-type optical fiber vibration sensor system in Korea that can monitor the operation information such as train speed and position and the sudden situation around the railway such as construction, rockfall, and external intrusion in real time. It was revealed on the 2nd.


This system, which was successfully domestically produced by the Optical Precision Measurement Research Center of the Korea Optical Technology Institute and Enit Co., Ltd. (Representative Ki Sondo), was developed through the Innovation Procurement Collaboration New Technology Commercialization Support Project of the Ministry of Trade, Industry and Energy, and is located in South Korea. Korail Corporation participated as a demand company.


The distributed vibration sensor system developed this time is equipped with a technology that can measure changes in scattered light generated by vibration around an optical cable buried in the ground and analyze the position and frequency of vibration up to a range of 50 km. ..


In addition, since the communication optical cable constructed around the existing track is used as it is as a sensing optical cable, not only the installation cost can be reduced, but also continuous section measurement is possible and the railway safety blind spot can be eliminated.


The relevant system, which applies artificial intelligence-based data analysis technology, classifies the location and event where train operation information, intruders, maintenance work, rockfall, optical cable damage, etc. occurred and informs the manager to prevent safety accidents. I plan to make it possible to prevent it.


Currently, we are demonstrating the relevant system on the Hunan high-speed ship Gomatsu-Hime 47 km section and the Hunan general line Nishioda-Keiryu 20 km section, and collect big data on the railway environment and various situations that occur during vehicle operation. We are focusing on improving system reliability through analysis.


Kim Myung-jin, director of the Korea Optical Technology Institute, said, "It is expected that the importance of railway traffic will increase further due to problems such as carbon reduction." "The distributed vibration sensor system developed this time can manage the railway network and prevent safety accidents. I hope it will be useful for building an advanced monitoring system. "