| 摘要 |
The longitudinal slippage or creep or a mine conveyor is monitored optically with a view to saving production. The method involves transmitting an optical signal from a primary source in the mine roadway to a reflector on the conveyor and receiving the reflected signal with a receiver adjacent to the primary source and reducing the angular movement of the reflector and line creep of the conveyor. An optical method is used to calculate the distance between the primary source and conveyor by measuring the time taken for a light signal to travel from the source to the reflector and back again. Alternatively or additionally, cord transducer is used to measure the distance. Processing circuitry calculates the conveyor creep from the angle and distance measurements. The invention provides apparatus for carrying out the above method. |
