Building up the FSK track circuit with the section circuitry and checking whether the section is occupied to realize the automatic blocking for control on the train. The FSK signal can provides information to the cab signaling equipment.
To replace the electrical centralized relay interlocking equipment. Features small size, light weight, high reliabilities and is convenient to expand or reduce the system capacity. It also has the automatic operation recording and fault diagnosing functions and will be the developing direction of the station centralized interlocking equipment.
By monitoring and recording the states of the signal equipment, and changing the 'fault repair' to 'state repair' the influence of the equipment faults or miss operation to the safe and scheduled running of the train could be avoided.
