Design of Portable Digital Multi-channel Pulse Amplitude Analyzer
For field testing convenience,a portable digital multi-channel pulse amplitude analyzer was designed.Adopting the ARM+FPGA design scheme,control and user interaction were implemented through an embedded Linux system.After processing through conditioning circuits,pulse signals were converted to digital signals by the sampling circuit,and various digital processes,including filtering and shaping,were completed in the FPGA.The final spectrum was processed and displayed by the embedded system.Using silver powder samples for testing,the energy resolution at the full energy peak is 2.80%,and the channel drift is within 2 channel sites,which can meet the design requirements.
portabledigital pulse amplitude analyzerconditioning circuitFPGAtrapezoidal filtering shapingembedded Linux
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