The Wireless Transmitting for the Flaw Signals Adopting SDR
In the process of the NDT to big steel tubes, we use multi-channel whirly sensors array to collect flaw signals and use sliding loops to transmit them. It will bring big problems to the reliability of the tran- smitting, because the sliding loops have to transmit the magnetizing currents at the same time. On the base of analyzing the defects of the transmitting adopting sliding loops, this paper provides a new way to transmit the flaw signals adopting SDR, the new method separates the magnetizing currents from the flaw signals, it is proved that the new method of transmitting can solve the problems that exist in the old system and improve the precision greatly.