The technical plan made by the BAS system of the high-speed railway station involves public area ventilation and air conditioning systems, equipment management room ventilation and air conditioning systems, tunnel ventilation systems, drainage systems, power transformation and distribution, escalator systems, cold and heat source systems, lighting systems, etc. The automatic control system of Qingdao Tieke Electronic Technology Co., Ltd. adopts a server/client structure to centrally manage and control the on-site electromechanical equipment, which can not only ensure the best operating state of the equipment itself, but also optimize the control of the entire system, energy-saving operation, and improve property management level, saving management costs, and realizing energy saving, green and environmental protection.

Application of PLC in the solution of BAS system of high-speed railway station

The high-speed railway station BAS system is divided into three levels in terms of logic control. The highest level is the central management layer, the middle level is the station control layer, and the lowest level is the field control layer.

Central management layer

The central management is located in the control room of the general dispatch center. The hardware consists of computers, network equipment, printing equipment, and large screen display equipment; the software includes the operating system, network management software, software application and maintenance platform, systemized application software, large database and Some other auxiliary software, etc.

Station control layer

Station control layer equipment is set in the station's main control room, mainly including monitoring workstations, redundant control PLC, IBP disk, network switches, printers, etc.

Field control layer

The field control layer equipment is discretely distributed at various monitoring points or data collection points in the station, including the field control box, PLC controller, various sensors, interface devices, remote IO modules, and actuators.

The equipment of the field control layer mainly realizes the functions of local monitoring and data collection. After the data is collected, it is transmitted to the upper layer, so that the central control layer can correctly judge the data, and then the field control equipment can switch the corresponding action mode.