چكيده به لاتين
ABSTRCT
As key components of the train control system, balise and Balise Transmission Module (BTM) cooperate with each other and fulfill the ground-train information transmission to ensure the safety and reliability of train operation.Balise Transmission Module (BTM) has been successfully used in dedicated passenger railways. BTM is the key equipment on board. When a BTM passes over the balise installed on the sleeper, telepower signal of 27.095MHz, which is emitted through the antenna unit continuously, activates the balise. The balise uses this power to transmit FSK modulated up-link signal upward to BTM. Then, BTM processes the signal received, parses the Balise telegram inside and forwards it to vital computer via RS422 interface. Train Location Reference (TLR) signal can be generated together with the telegram, which enables evaluation of the instant train positioning. Aiming this papere is simulation Balise Transmission Module circuit according to Etcs subset. At first we study ETCS subset and then we peruse generate up-link signal and demodulation fsk signal, we chose non-coherent detection for detect up link signal because it wasn’t use phase signal and can simply done. In session 4 BTM chart is designed and we simulation btm circuit in proteus software . we understand that up-link signal is similar receiver signal.
