HIGH SPEED SPOILAGE DETECTION USING AN ELECTROMAGNETIC SIGNAL

摘要

The present disclosure provides a system for inspecting cases of packages having a substance subject to spoilage. An electromagnetic signal (e.g., a terahertz frequency signal) is directed to each package in a case, and an attenuated signal is received and sampled to generate a set of data points corresponding to each package. A peak within each set of data points is detected, and the data points are shifted with respect to time to align the detected peaks with a predetermined time. The sets of shifted data points are compared to a mathematical model to determine whether the substance in the package is spoiled, and a labeling system marks cases containing spoiled substance.