In order to solve unstability problem of signaling centralized and locking system in mine which uses sensors to distinguish and locate locomotives. the paper introduced a method of locomotive location of coal mine underground by use of speed-measured technology by video. The method uses distance-measured technology of binocular stereo vision to get running distance of locomotive. obta... https://safeersappliancers.shop/product-category/faber-victory-2-0-x-a99-99cm-stainless-steel-built-in-cooker-hood-extractor/