The Research And Development Of The Safety Monitoring System Of Wire Rope Used To Lift Aerial Mancars

Wire rope has been fully used in the coal mining operations with its excellent overload capacity, tensile strength and fatigue resistance ability and other characteristics. As carrier of transport vehicles which is used to transport person in the underground mine, the safety and the working state of wire rope is relating to the lives of workers. Obviously, on-line detection of destructive damage is important. Because of the uninterrupted operation of the wire rope, the injury will run away from rope detection device after its detected. Therefore, location of damage, time tracking and status display are important function parameters to detection system. Research on a wire rope detection system with an efficient real-time status tracking function can provide important data support and references for mine workers to monitor and maintain the wire ropes.An online monitoring system is designed based on the principles of magnetic flux leakage of strong excitation state, which has adopts the current outstanding achievements of rope detection theory. The wire rope inspection system is divided into two parts according to the damage features and operating characteristics of aerial mancars wire rope. One part is the primary detection system, this paper used magnetic dipole theory to simulate and model the features of the leakage magnetic field of rope damage. The detecion system use NdFeB as its permanent magnet materials, and hall element as its wereless sensor. Then introduce its hardware and software disign. Another part is the damage location tracking module based on RFID technology. According to the site conditions,13.56MHz RFID reader system based on ISO15693protocol is selected to build the positioning module and detail positioning principle. The rope running state diagram is draw by software, which can realizes damage trace display. A complex electromagnetic environment exists in coal mine site, which will create negative interference and noise to the signal of wire rope testing equipment. In this paper, the coal electromagnetic environment will be analysised, and presence of various types of electromagnetic interference will be proposed. Then the EMC of the detection system will be designed according to this conclusion.