Patent ID: 6559760
Filing Date: 2003-05-06
Classification: B61C,B61L,H04N

Abstract:
A platform monitoring system comprising:an imager device installed on the ground side for capturing a situation on a platform; a wireless transmission unit for transmitting an image captured by said imager device to a vehicle side; a display unit installed on the vehicle side for displaying an image transmitted by said wireless transmission unit, wherein said wireless transmission unit includes: an optical transmitter installed on the ground side for transmitting an image captured by said imager device as an optical signal; a radio wave transmitter installed on the ground side for transmitting the image as a radio wave signal; an optical receiver installed on the vehicle side for receiving an optical signal transmitted from said optical transmitter; a radio wave receiver installed on the vehicle side for receiving a radio wave signal transmitted from said radio wave transmitter; and a selector for selecting one of the optical signal received by said optical receiver and the radio wave signal received by said radio wave receiver, said optical transmitter and said optical receiver are positioned such that a vehicle position range in which signal transmission through the optical signal can be achieved includes a region around a predetermined stopping position of the vehicle with respect to the platform, said radio wave transmitter and said radio wave receiver are positioned such that a vehicle position range in which signal transmission through the radio wave signal can be achieved includes a range from a region around the stopping position to a predetermined position behind the stopping position in a vehicle running direction, and an image represented by a signal selected by said selector is selectively displayed on said display unit.