Embedded Wireless Testing System Applied in Coal Cutting Experiment

摘要

The Study aims at finding solutions to the existing condition that is difficult to achieve the operation of the wire data transmission in the process of shearer cutting, which demands putting forward an embedded wireless testing system that meets 3D mechanical signal collection and transmission. Embedded signal acquisition and wireless data transmission are included by the test system. Signal acquisition device is used to get the three-dimensional force of shearer pick cutting coal and rock, the wireless data transmission was built based on the zigbee wireless technology and labview virtual technology. This system is utilized in the coal cutting test-bed (CTBCR), two sequential cylinder head with different cutting parameters were used in the cutting experiment. The results show that The relationship between the cutting force and the coal compressive strength, pick-tip cone angle, drum rotate speed ,traction speed. Fluctuation in the cutting force has a linear relationship to coal compressive strength and traction speed. A plot of cutting force fluctuations versus the cutting thickness follows a sigmoidal curve. Based on the analysis of these test results a theoretical basis is supplied for design and effective use of shearer drums.