| 摘要 |
The invention relates to a system and a method for monitoring electrodynamic central traffic control systems with relays, used in railway, with a view to performing a subsequent analysis of the central traffic control systems operation. According to the invention, the system consists of a central station (PC) and several local stations (PL), each of them comprising a local processing unit (UPL), a microcontroller system, a communication interface (CPL) and an analogue input multiplexer (MUX), to be connected to the central station (PC) by means of a bidirectional communication bus (MBC), the local stations (PL) being connected to all the relays on the train wagons which can reach the maximum number of eighty-one, and to the train wagons power-supply strip, each relay being connected by means of a relay contact (CR) which determines the closing of the operation contact, of the resting contact or of neither of them, where the local station input voltage is Vcc upon closing the operation contact, approximately Vcc/2 during the fly and zero V upon closing the resting contact. |
