Journal of Atmospheric and Environmental Optics, Volume. 11, Issue 4, 313(2016)
Design of Infrared Spectrum Signal Acquisition System Based on FPGA
An acquisition system of infrared spectrum signal based on field-programmable gate array(FPGA) is introduced. It is designed to implement data acquisition of 64-channel infrared spectrum signal. Altera’s EP2C35 family chip is used as the control unit to realize the analog multiplexers switching, A/D conversion, data access. For weak DC signal of infrared spectrometer, a signal conditioning circuit is designed to restrain noise. Finally, the data is transmitted to upper computer by serial port. A brief introduction is given about every sub modules. By testing, the system has been validated to be reliability, which can detect minimal 0.23 μV weak DC signal and the actual signal to noise ratio can reach 45 dB.
Get Citation
Copy Citation Text
LI Liang, FANG Yonghua, ZHAO Yandong, YANG Min. Design of Infrared Spectrum Signal Acquisition System Based on FPGA[J]. Journal of Atmospheric and Environmental Optics, 2016, 11(4): 313
Category:
Received: Apr. 1, 2015
Accepted: --
Published Online: Oct. 21, 2016
The Author Email: