Processing circuit based on Fourier infrared spectrometer and Fourier infrared spectrometer

The embodiment of the utility model provides a processing circuit based on a Fourier infrared spectrometer and the Fourier infrared spectrometer. The processing circuit comprises a signal acquisition module used for acquiring a to-be-processed signal and sending the to-be-processed signal to a signal conversion module; the signal conversion module is used for performing photoelectric conversion on the to-be-processed signal to obtain a first conversion signal and sending the first conversion signal to the signal amplification module; the signal amplification module is used for amplifying the first conversion signal to obtain an amplified signal and sending the amplified signal to the filtering selection module; the filtering selection module is used for carrying out filtering and frequency selection on the amplified signal to obtain a filtering selection signal, and sending the filtering selection signal to the shaping amplification module; the shaping and amplifying module is used for carrying out shaping an