Development of Assistant System Based on Mixed Reality Technology for Permanent-way Maintenance in Rail Transit

The complex scene of permanent-way maintenance in rail transit and the various ways of using maintenance equipment require new employees to have a long period of practical training, and because of the high rate of staff resignation, the reuse of experience is low. With the development of computer simulation technology, virtual reality, BIM and other technologies have been gradually explored and applied. However, due to space limitations and other problems, these technologies cannot adapt to the scene of front-line departments, so it is necessary to explore a flexible interactive system combining virtual and real. This paper develops an assistant system of railway transit maintenance based on mixed reality technology. According to the structure of MVVM, the system has been designed to be two subsystems, including the basic layer, the data layer, the logic layer and the application layer. The system realizes the information assistant function of virtual and real fusion, and can realize the guidance of maintenance of works. Users can learn maintenance knowledge through the system, and complete maintenance with the help of the system. This system helps users to complete the efficient transition from maintenance training to work process.