Abstract: Provided are a method and system for detecting an oil abrasive particle size. The method includes: acquiring a voltage signal of an oil abrasive particle in real time, where the voltage signal is generated in real time in a process that the oil abrasive particle passes through an electromagnetic abrasive particle sensor; establishing a voltage curve coordinate system with an amplitude of the voltage signal as a Y-axis and a time of the voltage signal as an X-axis, and obtaining a voltage curve; performing feature extraction on the voltage curve, and obtaining an area S defined by a voltage curve within a half voltage signal cycle T and the X-axis and a maximum absolute value A of a voltage signal value according to the voltage curve coordinate system; and inputting S and A to a trained back propagation neural network for prediction to obtain a predicted oil abrasive particle size.

Abstract: Provided is a display substrate, including a base substrate and a plurality of pixel units, the plurality of pixel units includes regular pixel units and redundant pixel units, each regular pixel unit includes at least one constant voltage terminal and at least one dual-gate transistor, each dual-gate transistor includes two gates which are spaced apart, and a part of an active region of the dual-gate transistor, which is located between the two gates, is an intermediate part; the display substrate further includes a plurality of compensation structures, each compensation structure is connected to one constant voltage terminal of the pixel unit, and compensates for the at least one dual-gate transistor of a regular pixel unit; the compensation structure overlaps and is insulated from the intermediate part of the dual-gate transistor for which the compensation structure compensates.