A real-time imaging data acquisition(DAQ)system for pn-junction Charge-Coupled Devices(pnCCD)was developed,incorporating multi-thread processing and multi-frame image superposition tech-niques to address the specific operational characteristics of pnCCDs.To fulfill the high-speed DAQ re-quirements for real-time data acquisition and caching,DDR3 memory was employed to receive scientific data from the detector box.The host computer utilized the queue operations functionality of LabVIEW to implement multi-threaded processing for data acquisition,storage,and image superposition.Additionally,real-time image processing modules with multiple operational modes were designed.Experimental results demonstrated that the DAQ system effectively met the requirements across various pnCCD operational modes.Real-time image processing enabled rapid determination of the focusing camera's imaging position,facilitating efficient completion of key experimental procedures,such as focus adjustment and positive axis determination,within the X-ray calibration facility.The system exhibited stable and reliable communica-tion,showcasing exceptional flexibility and portability.
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