System for nondestructive detection on defects of prestress steel strand through ultrasonic guided waves and detection method
A prestressed steel strand, non-destructive testing technology, applied in the direction of processing the response signal of the detection, analyzing materials, instruments, etc., to achieve the effects of easy maintenance, small transmission attenuation, and long detection distance
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[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0015] like figure 1 As shown, the ultrasonic guided wave nondestructive testing system for prestressed steel strands of the present invention includes a host computer, a digital board, a power amplification module, a transceiver combined controller, a guided wave transceiver and a gain amplification module, wherein the digital board includes Network interface chips, FPGA, DSP, ADC, DAC and SRAM hardware chips, such as figure 2 As shown, the digital board takes FPGA as the core, and the FPGA is connected with DSP, ADC, DAC, SRAM and network interface chip respectively. The FPGA is selected as Altera CycloneⅢEP3C25F324C7, and the DSP is selected as TMS320C6713. The digital circuit board is connected with NI company. The digital acquisition board achieves the performance of the same sampling rate, number of channels, and data processing capability, and ...
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