Multi-channel abrasive particle detecting method and device based on time division multiplexing technology

Abstract

The invention relates to a multi-channel oil abrasive particle detecting method and device based on a time division multiplexing technology. In order to solve the problems in the prior art that multi-sensor sensitivity is inconsistent and an output signal needs sufficient stabilization time, according to the method, a sine wave signal generated by a excitation signal source is loaded onto sensorsof n channels, when oil flowing through the sensors contains metal particles, the amplitudes of output signals of the sensors are changed, and the sensor output sine wave signals contain information on metal abrasive particles. Based on the principle of time division multiplexing, the n sensors operate in different time periods, that is, the detection processes of the n sensors are shifted in time, and the peaks of the sine wave signals of the sensors of multiple channels are intercepted and synthesized into one output signal. In n cycles, the sine wave signals of the n channels are respectively raised, the signals of the signals of the n channels higher than the sine wave amplitudes are combined into one signal to be output, and the signal includes the peak change information of the sinewaves of the n channels.

Description

technical field [0001] The invention belongs to the field of coil inductance detection, and in particular relates to a multi-channel oil abrasive particle detection method and device based on time division multiplexing technology. Background technique [0002] In order to reduce the wear of mechanical equipment, lubricating oil is usually used to lubricate the friction pairs of mechanical equipment to reduce the degree of mechanical wear. During the operation of mechanical equipment, metal abrasive particles produced by friction pair wear will enter the lubricating oil. The degree of wear and the type of wear are different, and the characteristics of the metal abrasive particles produced are also different. According to the characteristics of the wear particles, the degree of wear of mechanical equipment can be estimated. In addition, the accumulation of metal abrasive particles in lubricating oil will cause the quality of lubricating oil to decline. Therefore, the effectiv...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of inconsistent sensitivities of multiple sensors in the prior art and sufficient stabilization time for output signals, the present invention proposes a multi-channel oil abrasive particle detection method and device based on time-division multiplexing technology

Images