基于RFID分时发送的铁塔形变监测设计

Design of iron tower deformation monitoring based on RFID time-sharing transmission

设计采用放置于铁塔关键点的有源射频识别(RFID)标签发送分时信号,在地面的多个接收天线接收信号后分别计算两两之间相位差的方法,计算关键点的坐标,通过与正常情况下的坐标位置进行比较,及时发现铁塔的形变程度。监测结果能够在单个方向上达到5～6 cm左右的测量精度,可以反映出铁塔的形变大小,保证输电的可靠性。

The design uses active radio frequency identification( RFID) tag placed at the key point of the tower to send the time-sharing signal,calculate the phase difference between the two after the ground of multiple receive antennas receives the signal,can calculate the coordinates of these points. Use the calculated coordinates to compare with the normal position,timely detection of the deformation of the tower. It monitoring results can be reach 5~ 6 cm measurement precision in a single direction,can reflect size of the deformation about the tower and ensure the reliability of transmission.