A STUDY ON THE WIRELESS MONITORING SYSTEM FOR THE RAILROAD VEHICIE maintenance using the energy harvesting technology

초록

Advanced high speed railroad system requires absolute improvement of the reliability and safety of both the train and passengers and increase in cost for system maintenance has been emerged as another challenge. Thus it’s necessary to develop the technologies that will satisfy the needs in two different aspects, dubbed as reliability & safety and maintenance cost. To that end, development of intelligent railroad system including rolling stock is more than important. Intellectualization of railroad system is based on development of constant real-time detection technology which requires Information Technology-integrated intelligent monitoring system. In general, monitoring system is needed for constant monitoring which enables to detect abnormal symptom of the system and take preventive measures or counter measures before emergency situation. And to maintain such a constant monitoring, it’s necessary to identify the symptom by analyzing the information using the sensor which functions to convert the physical symptom into electrical signal. However, existing railroad monitoring system usually adopts wire sensor and the need for using monitoring system with wireless sensor that enables to monitor the parts of the bogie or driving system or the system inaccessible in the vehicle has been on the rise. Thus, this study was researched the existing railroad monitoring system and, for using monitoring system with wireless sensor, this study also was intended to identify the applicability of energy harvesting technologies which is regarded the new and renewable energy for monitoring the intelligent railroad system.