METHOD OF OPERATING CONTROL OF MAIN FAN UNIT FOR SHAFT VENTILATION Russian patent published in 2015 - IPC E21F1/00 

FIELD: physics, control.

SUBSTANCE: making a high-performance method of operating control of main fan unit (MFU), operated in underground mining enterprises, using the results of statistical estimates of significance of influence of air parameters in a fan and diffuser MFU channels on the process of shaft ventilation. The method of operating control of the main fan unit for shaft ventilation includes the retrival of data from pressure and air flow rate sensors to the microcontroller unit (MCU), their processing and delivery of pilot signals to MFU driver unit. The novice is in that the sensors are located locate in fan and diffuser MFU channels and using the data retrieved by MCU from sensors, they are processed by measuring MFU productivity (Q_B) and static pressure (h_ct), achieved by MFU, checkout of significance of the data retrieved from the named sensors, and determination of absence or presence of shaft natural traction (h_e), and also the degree of its influence on the process of shaft ventilation using the method of statistical assessment of the level of significance of influence of the named parameters on MFU operating mode. Then by results of these estimates a pilot signal is formed to MFU driver unit or the data are kept storing without change of MFU operational mode.

EFFECT: method of statistical assessment allows to increase essentially the efficiency of MFU operating control and to exclude excessive energy costs.