Online operation maintenance and diagnosis system based on underground railway station environmental control system of urban rail transit

Aiming at some problems including sensor drift in the air conditioning system of underground railway stations because of less maintenance for a long time, the operation maintenance personnel can not quickly respond to the energy efficiency decline of the equipment, and the equipment always runs in an unreasonable state for a long time, based on the physical model of HVAC equipment and pipe network, proposes an online operation maintenance and diagnosis system for the environmental control system of underground railway station, and applies it to the environmental control system of Jiahe Wanggang station of Guangzhou metro line 14. The results show that the system is of great significance to improve the work efficiency of the operation maintenance personnel of the air conditioning system of the underground railway station, shorten the failure duration of the air conditioning equipment, and maintain the efficient operation of the air conditioning environmental control system of the underground railway station.