Patent ID: 8766814
Filing Date: 2014-07-01
Classification: B61L

Abstract:
1. A motorman's cab display system comprising: information control terminal apparatuses respectively mounted on cars of a train, connected to one another by an inter-car transmission path, and configured to collect state information of apparatuses mounted on the cars and output control information to the apparatuses; information control central apparatuses respectively mounted on a first car and a last car of the train, connected to the information control terminal apparatuses by the inter-car transmission path, and configured to manage train information including the state information received from the information control terminal apparatuses and the control information transmitted to the information control terminal apparatuses; motorman's cab display apparatuses respectively mounted on the first car and the last car, connected to the information control central apparatuses by transmission paths for display apparatus, and configured to display the train information transmitted from the information control central apparatuses on a display screen of a display device; and a luminance determining unit configured to output luminance information for setting luminance of the display screen, wherein the information control central apparatus includes a location-information calculating unit configured to calculate a traveling location of the train and output location information of the train, the motorman's cab display apparatus includes a luminance adjusting unit configured to adjust the luminance of the display screen according to the luminance information output from the luminance determining unit, and the luminance determining unit compares location information at both ends of a tunnel section on a track of the train and the location information of the train output from the location-information calculating unit, outputs, when determining that the train is traveling in a tunnel, luminance information for inside of tunnel set in advance, and outputs, when determining that the train is traveling outside the tunnel, luminance information for outside of tunnel set in advance, wherein the luminance determining unit is provided in the motorman's cab display apparatus, and the location-information calculating unit transmits the location information of the train to the luminance determining unit via the transmission path for display apparatus, wherein when the train enters the tunnel section, the luminance determining unit outputs the luminance information for inside of tunnel to the luminance adjusting unit, wherein the motorman's cab display apparatus includes a manual luminance setting unit configured to output manually-input and set luminance information to the luminance determining unit, and the luminance determining unit outputs the luminance information input from the manual luminance setting unit to the luminance adjusting unit, wherein the luminance determining unit stores luminance information of the display screen immediately before entry into the tunnel section and outputs, when the train exits the tunnel section, luminance information of the display screen immediately before entry into the tunnel section to the luminance adjusting unit, wherein the information control central apparatus transmits speed information of the train to the luminance determining unit, the luminance determining unit of the motorman's cab display apparatus mounted on the first car compares the location information from the location-information calculating unit and the location information at both the ends of the tunnel section and outputs, when determining that the first car reaches a starting end of the tunnel section, the luminance information for inside of tunnel to the luminance adjusting unit of the motorman's cab display apparatus, and the luminance determining unit of the motorman's cab display apparatus mounted on the last car compares the location information from the location-information calculating unit and the location information at both the ends of the tunnel section, calculates, after determining that the first car reaches the starting end of the tunnel section, a predicted time difference until the last car reaches a location of the first car at the time of the determination by dividing formation length of the train by speed of the train at the time of the determination obtained from the speed information, and outputs, when time elapses by the predicted time difference, the luminance information for inside of tunnel to the luminance adjusting unit of the motorman's cab display apparatus.