Signal detection method adopting U-shaped channel backflow oil way abrasive particle detection device

• Main Authors: LIU XIN, GAN XINLING, LIU WULANG, SONG HONGZHENG, DENG YUNCHUN, LUO JIUFEI, ZHANG ZIQIANG, FENG SONG, ZHENG RUI
• Format: Patent
• Language: Chinese; English
• Published: 20.01.2023
• Subjects: INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK; PHYSICS; TESTING

The invention belongs to the field of oil abrasive particle monitoring, and particularly relates to a signal detection method adopting a U-shaped channel backflow oil way abrasive particle detection device, and the device comprises an induction type abrasive particle detection sensor; the induction type abrasive particle detection sensor comprises a U-shaped pipe detection assembly, an excitation coil, an iron core, two detection coils, two oil pipe locking devices and two magnetic poles. Two detection signals of oil are collected, the movement rate of the abrasive particles is preliminarily estimated according to the detection signals, and the cut-off frequency of low-pass filtering is set; filtering the detection signal according to the cut-off frequency, performing noise reduction on the filtered signal to obtain two new detection signals, and estimating the volume of the abrasive particles according to the new detection signals; according to the method, the real-time movement speed of the oil ferromagneti