公开(公告)号：US20240102979A1

公开(公告)日：2024-03-28

申请号：US18533743

申请日：2023-12-08

Applicant: University of Electronic Science and Technology of China

Inventor： Huiling Tai ,  Yadong Jiang ,  Yilun Ma ,  Zaihua Duan ,  Yuanming Wu ,  Zhen Yuan

IPC: G01N33/00

CPC classification number: G01N33/0006

Abstract: A calibration concentration selection method includes steps of: using a gas sensor array to obtain a concentration variation sequence and a response variation sequence of the gas mixture; constructing and training an AE-BP model; constructing VAE and identically distributing the response variation sequence; inputting the identically distributed response variation sequence into the trained AE-BP model to output a predicted concentration variation sequence; and then normalizing the predicted concentration variation sequence to generate a target concentration variation sequence; sorting a target concentration variation sequence and calculating a response gradient sequence; processing the response gradient sequence for obtaining a corresponding smoothed gradient sequence; if the spike is greater than a preset hyperparameter, finding a large gradient concentration interval; and selecting concentration test points by random uniform sampling according to weights; and selecting concentration test points from all other concentration intervals in the smoothed gradient sequence by random uniform sampling.