Abstract: Disclosed is a railway vehicle major component and system diagnosis apparatus, which includes: a railway vehicle state summarizer that generates a feature value for at least one major component and system of a railway vehicle by summarizing sensing values collected through a plurality of sensors for a first period as a multi-dimensional railway vehicle parameter; a database generator that generates a database for at least one major component and system of a railway vehicle by normally distributing a plurality of feature values accumulated for a second period composed of a plurality of continuous first periods; and a railway vehicle diagnosis performer that detects and precisely diagnose abnormal situations in at least one major component and system of a railway vehicle on the basis of the database for major components and systems.

Abstract: Disclosed is a method of monitoring a problem related to a railroad car by a railroad car monitoring apparatus, the method including: selecting a monitoring target of the railroad car; selecting a diagnosis reference related to the monitoring target; measuring travelling data related to the monitoring target while the railroad car travels; drawing a result value of the characteristic function according to the travelling data and comparing each of the travelling data with a reference value in a normal state and determining whether a defect is generated in the monitoring target.

Abstract: A projection apparatus for a vehicle of the present invention includes a projector for projecting an image onto a screen, a support bracket supporting the projector, a frame attached to a ceiling of the vehicle, and a vibration absorber arranged between the support bracket and the frame. The vibration absorber includes a plurality of wire ropes for absorbing multidirectional vibrations transmitted from the vehicle through the frame to the projector. Accordingly, this prevents the projector from shaking so that passengers can comfortably watch video content, and also reduces the incidence of breakage of components of the projector, thereby prolonging the lifetime of the projector.

Abstract: A projection apparatus for a vehicle of the present invention includes a projector for projecting an image onto a screen, a support bracket supporting the projector, a frame attached to a ceiling of the vehicle, and a vibration absorber arranged between the support bracket and the frame. The vibration absorber includes a plurality of wire ropes for absorbing multidirectional vibrations transmitted from the vehicle through the frame to the projector. Accordingly, this prevents the projector from shaking so that passengers can comfortably watch video content, and also reduces the incidence of breakage of components of the projector, thereby prolonging the lifetime of the projector.

Abstract: A screen apparatus for a vehicle is disclosed. The screen apparatus of the present invention includes a screen (5) for displaying an image thereon, a support frame (10), which supports the screen such that the screen is rotatable between an operation position, at which the screen is perpendicular to a ceiling surface of the vehicle, and a storage position, at which the screen is parallel with the ceiling surface of the vehicle, and a vibration absorbing unit (61), which is provided between the support frame and the ceiling surface of the vehicle and has a plurality of elastic wires (67) for absorbing vibrations transmitted to the support frame in multiple directions. Therefore, the present invention can prevent the screen from undesirably moving, thus making it possible for a user to comfortably watch images.