Centralized control method for precision machine room air-conditioner system

Disclosed is a centralized control method for a precision machine room air-conditioner system. The method comprises the steps that (1) indoor temperature and the humidity are monitored in real time, and a mathematic model is adopted for starting one precision air conditioner once the temperature or the humidity exceeds the upper limit or the lower limit; (2) after a few periods of time, the temperature and the humidity are monitored again, and if the temperature and the humidity are within the stopping range, all the precision air conditioners are stopped; if the temperature and the humidity are not within the stopping range, the mathematic model is adopted for starting another precision air conditioner; (3) the step (2) is executed repeatedly until the temperature and the humidity are within the stopping range. According to the centralized control method, on the premise that safe and stable running of a machine room can be ensured, the starting and stopping frequency of one single air conditioner is reduced, the service life of the air-conditioner system is prolonged, the maintenance cost of the machine room is reduced, and the centralized control method has high economic value.