The invention discloses a nuclear pulse
signal discrimination method and
system, and belongs to the field of
nuclear radiation detection.The nuclear pulse
signal discrimination method comprises the steps that firstly, a nuclear pulse
data set is constructed in two
modes, one mode is that a simulated nuclear
pulse generator is used for generating pulse signals for determining
ray types, and the pulse signals are collected through an FPGA + ADC hardware
system; secondly, Python
software is used for simulating and generating pulses for determining
ray types according to actual nuclear pulse
signal characteristics; then, a CNN model is constructed based on the LeNet network, and a triple
loss function is adopted for model training; and finally,
similarity matching is carried out through measurement by means of feature vectors output by the neural network, and discrimination and classification of different types of nuclear pulse signals are realized. According to the method, the nuclear pulse signal features are automatically extracted through the deep metric learning model, the limitation of dependence on artificial
feature extraction in a traditional method is overcome, the accuracy of nuclear pulse signal discrimination is improved, pulse signals generated by different types of rays can be effectively distinguished, and an efficient and reliable technical scheme is provided for
nuclear radiation detection.