Image Monitoring System and Key Technology in Underground Mine

Based on the low ilumination, mine dust, spray impact, severe electromagnetic interference and other issues in the mining image monitoring, we put for ward some key technology requirements in the image monitoring system of mine, such as the supplementary lighting of the mining camera; the color or black and white signal automatic conversional function in the color camera, when the ilumination was low, the color camera automatically converts to black and white signals; the prote ctive glass and dust removal function; horizontal resolution of the camera no less than 400 lines ( under the ilumination condition of 50 ~ 300 Ix)，gray level no less tha n 7 ( under the ilumination condition of 50 ~ 300 |x) ，minimum ilumination no greater than 0.005 lx, etc. Besides, we suggested that the camera should be installed in mining working face, the underground substation, the head and tail of the belt conveyor, underground water pump room and other key places. Simultaneously, it was poi nted out that the mining image monitoring technology would be widely used in many fields, such as uniquely personnel identification, coal production monitoring, anti- C heating, coal bunker and coal level monitoring, water sump and water level monitoring, coal and rock identification and monitoring of the belt conveyor and others.