FT-BICENTRIC CONTROL SYSTEM OF BICENTRIC THREE-LAMP THREE-INDICATOR RAILROAD SIGNAL

摘要

PURPOSE: An FT-bicentric control system of a bicentric three-lamp three-indicator railroad signal is provided to perform easily an operation of a signal of an electronic interlocking system by using a hardware method instead of a software method. CONSTITUTION: An FT-bicentric control system of a bicentric three-lamp three-indicator railroad signal includes a red control unit(10), a green control unit(20), and a yellow control unit(30). The red control unit(10) includes a red main center driving unit for operating a center of a red lamp according to a red driving signal and a red sub-center driving unit for operating a sub-center of the red lamp in order to indicate selectively a main center and a sub center of the red lamp. The green control unit(20) includes a green main center driving unit for operating a center of a green lamp according to a green driving signal and a green sub-center driving unit for operating a sub-center of the green lamp in order to indicate selectively a main center and a sub center of the green lamp. The yellow control unit(30) includes yellow red main center driving unit for operating a center of a yellow lamp according to a yellow driving signal and a yellow sub-center driving unit for operating a sub-center of the yellow lamp in order to indicate selectively a main center and a sub center of the yellow lamp.