Multi-path data acquiring system based on FPGA
A data acquisition system and data sorting technology, applied in the direction of data acquisition and recording, general control system, control/regulation system, etc. Gain control, improve the effect of filtering, improve the effect of real-time performance
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[0026] refer to figure 1 , the present invention is mainly composed of multiplexer, programmable gain amplifier, AD converter and FPGA data processing module. The FPGA data processing module sends the address signal to the multiplexer, the amplification factor signal to the programmable gain amplifier, and the read / return signal to the AD converter. The multiplexer selects the corresponding external channels according to the address signal to enter the programmable Gain amplifier, the programmable gain amplifier amplifies the input analog signal according to the amplification factor signal, the amplified signal is output to the AD converter, the input analog signal is sampled, quantized into a digital signal, and the conversion completion flag is sent to FPGA data processing module, the FPGA data processing module sends the read / return signal to the AD converter again, making the signal high, and then reads the digital signal of the AD converter, and the FPGA data processing m...
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