Early warning on safety distance of railway locomotive based on massive data processing of integrated positioning
Zhou Xiao-pin · Journal of Safety Science and Technology · 2015
Aiming at the phenomenon that the loss of positioning data for railway locomotive in China have occurred frequently,it was illustrated to construct the system architecture of railway locomotive positioning by using the integrated positioning equipment of GNSS / INS / DR( Global Navigation Satellite System / Inertial Navigation System /Dead Reckoning),which is a comparatively mature technology now available. On this basis,aiming at the massive position data and introducing into the Hadoop technology,the methods to store the massive data of position information by applying HBase and correct the position information data and calculate the safety distance by applying MapReduce were put forward. The experimental verification showed that for this scheme,under the condition of needing massive data access,the distributed data analysis by applying MapReduce has higher efficiency and better expansibility.