System and method for online monitoring of lubricating grease decay degree by infrared point laser transmitter

Abstract

A system and method for online monitoring the degree of decay of lubricating grease by utilizing infrared dot laser emitters are disclosed. A plurality of the infrared dot laser emitters emit infraredlight with different wavebands onto the lubricating grease; reflected light signals are received by luminous intensity sensors, and processed by a sing chip microcomputer to obtain infrared luminousintensity changes of wavebands corresponding to characteristic functional groups such as methyl, carbonyl and hydroxyl; a lubricating grease service lifetime parameter K model quantized by characteristic quantities is built by utilizing an experiment database; and the degree of decay of lubricating grease is represented by the parameter K in real time and quantificationally to make a real-time judgment on the service lifetime, thus achieving on-line monitoring of the service lifetime of the lubricating grease.

Description

technical field [0001] The invention relates to a system and method for monitoring the decay degree of lubricating grease, in particular to a system and method for on-line monitoring the decay degree of lubricating grease by using an infrared point laser transmitter. Background technique [0002] Lubricant is one of the basic elements of modern mechanical systems. Its main function is to reduce friction and wear between moving pairs, improve mechanical working efficiency, and prolong the service life of machinery. Among them, the use of grease is quite common, especially in some low-speed, heavy-duty large-scale equipment. Grease is less sensitive to temperature, has greater adaptability to changes in load properties and operating speed, and has good adhesion on metal surfaces and is not easy to lose, so it has good lubricating ability, but the lubrication fails It will lead to a sharp increase in the wear of the moving pair, a rapid shortening of the life, and even a major...

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Problems solved by technology

Patent No. CN101971007A "Measuring Device and Method for Analyzing Bearing Lubricant" proposes a measuring device for analyzing bearing lubricant, including a transmitter, a receiver, a window, etc., the window is in direct contact with the grease, and the detection The state of the lubricant can be obtained from the frequency spectrum of the electromagnetic radiation captured in the area, but the installation of this test device needs to drill holes in the bearing and change the bearing structure. In addition, when extracting the signal spectrum, it is necessary to use all the time domain information of the signal, effectively low information rate

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