Design of signal processor in system of electric locomotive's auto-passing the phase division

To save the problem of signal processing in electric locomotive's passing the phase division,the signal processor of system of electric locomotive's auto-passing the phase division on the base of GFX-3 system function was designed.Using Siemens S7-200 PLC as core control unit of signal processor in system of electric locomotive's auto-passing the phase division.The electro-circuit of signal collecting and settling is designed from such aspects as photo-coupling,anti-interference,circuit protection and matching software to perform function.The PLC program is designed from the needful functions such as self-checking,shielding,responding and exporting.And so signal processor achieves the function of adjusting the original signal of system of electric locomotive's auto-passing the phase division.The results of the test showed that the system's signal processing accuracy rate has a 1.2% increase compared with the GFX-3 system and so it may be used with practicability and value in the future.