This invention relates to the field of
radionuclide detection technology, and more particularly to a portable
nuclide identification system based on an array-type
CZT detector. The
system includes a
detector bias high-
voltage establishment module, a raw
energy spectrum acquisition module, a high-
voltage power failure emergency protection module, an analysis thread module, and an
energy spectrum UI display module. It achieves uniform high-
voltage rise and fall and precise voltage stabilization through PID control, providing a reliable bias for the
CZT detector. Simultaneously, it combines an array-type
CZT detector with a dedicated ASIC readout circuit to complete high-precision conversion of gamma-
ray energy and
data verification and transmission. It also accumulates and stores
energy spectrum data in real time and enables seamless
power switching and soft-voltage shutdown, ensuring hardware,
software, and
data security. The analysis thread module performs preprocessing,
peak fitting, intelligent disassembly of overlapping peaks, and
branch ratio
verification to complete qualitative identification of nuclides and quantitative analysis of
activity concentration. Furthermore, it achieves smooth energy spectrum display through LTTB
algorithm downsampling and supports
touchscreen interaction and real-time
nuclide information
annotation.