METHOD FOR MONITORING THE STATE OF A BELT CONVEYOR WITH AN INTRINSICALLY SAFE MACHINE VISION CAMERA MODULE AND THERMAL IMAGER Russian patent published in 2023 - IPC G01N25/72 G01J5/48 H04N5/33 G08B17/00 

FIELD: mining industry.

SUBSTANCE: invention is related to diagnosing technical condition of belt conveyors and can be used in particular in mines and their surface structures, underground workings of mines that are hazardous due to gas (methane) and/or coal dust. The essence of the invention lies in the fact that the method of monitoring the state of the belt conveyor includes a diagnostic stop of the conveyor for a specified time to heat the belt sheet by faulty elements of the belt conveyor, detection of heated sections of the belt during the subsequent diagnostic start of the conveyor using a thermal imaging camera. Moreover, the location of faulty elements is calculated by means of a video server using the calculation of a certain integral at the moment of detecting a heated section of the sheet, where T is the time since the start of the conveyor after its diagnostic stop, v(t) is the function of changing the belt speed, where the belt speed is measured using a speed sensor or a video camera, S is the distance from the thermal imaging camera to the faulty element, and the degree of wear of defective elements of the belt conveyor is determined by the temperature and area of the heated section of the sheet.

EFFECT: reduction of idle time of conveyor belts due to automatic detection of faulty elements and the possibility of their scheduled repair, as well as prevention of breakage of the belt sheet due to friction or plugging, as well as providing the possibility of autonomous (without transmitting a video stream to the surface) video analytics in a non-intrinsically safe environment of images of thermal and visible spectrum and autonomous decision-making, regardless of availability of communication.

1 cl, 2 dwg