Abstract:Based on the virtual instrument technology and Labview software platform, pyroelectric IRFPA image acquisition PC-DAQ system was constructed using NI PCI-6115 acquisition card. Driving signals of external driving circuit were used as the control signals of the acquisition system to control the start and end and the sample acquisition clock. And synchronous signals were acquired to identify the light frame from the dark frame so as to make differential treatment. The construction of the image acquisition system, the design of hardware and software and the operation of front panel were presented in detail. Finally, image acquisition experiments were carried out on the pyroelectric ROIC and IRFPA. The waveform and image of the output signals were displayed in the system and the feasibility of image acquisition was validated.