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://www.jmannino.com/super-super-University-of-Arizona-Primary-Mark-iPhone-14-Plus-MagSafe-Case-p76978-deal-zone/