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Nondestructive testing with sensor technology is one of the fastest growing and most promising wheat quality information analysis technologies. Nondestructive testing with sensor technology benefits from the latest achievement of many disciplines such as computer, optics, mathematics, chemistry, and chemometrics. It has the advantages of simplicity, speed, low cost, no pollution, and no contact. It is widely used in wheat quality analysis and testing research. This article summarizes nondestructive testing with sensor technology for wheat quality, including the mechanical model, hyperspectral technology, Raman spectroscopy, and near-infrared techniques for wheat mechanical properties, storage properties, and physical and chemical properties (such as moisture, ash, protein, and starch) in the past decade. Based on the current research progress, big data technology needs a lot of research in spectral data mining, modeling algorithm optimization, model robustness, etc. to provide more data support and method reference for the research and application of wheat quality.

A new method of IGBT fault protection using double threshold detection and shaped v/sub GE/ profile of IGBT turn-off with multi-slopes is proposed, based on the analysis of the behavior of IGBTs under different short circuit conditions. Employing the new concept, a computer simulation is used to optimize the selection of threshold reference and V/sub GE/ profile of turn-off. The recommended scheme is implemented to verify that the IGBT fault protection is reliable and immune from interruption in a SPWM motor drive application.

Hydrogen related defect states generated in n-FZ Si(H2) single crystal after neutron irradiation have been studied by IR absorption. We observed some new absorption peaks that have not yet been reported. These peaks appear at 1992cm-1 and 1857 cm-1 in non-irradiated and irradiated specimens respectively. All absorption peaks arising from hydrogen and hydrogen related defects of n-FZ Si(H2) before and after neutron irradiation have been both discussed and assigned. And the 2150cm-1 absorption peak is attributed to the hydrogen donor.