Particle online detection device and detection method based on microfluidic chip

Abstract

The invention discloses an online particle detection device based on a microfluidic chip and a detection method thereof. The device includes a microfluidic chip, a first impedance analyzer and a second impedance analyzer; the microfluidic chip includes a substrate component and a chip body provided on the substrate component; the chip body includes: a first liquid inlet hole, a second liquid inlet hole, a first liquid outlet hole and a second liquid outlet hole provided on the substrate member; used for A particle separation area for separating ferromagnetic particles and non-ferromagnetic particles in the oil under the action of a magnetic field; a magnetic component placement area provided on the substrate component and located on one side of the first microchannel; placed on the magnetic On the component placement area, magnetic components are used to provide a magnetic field; a particle detection area; the invention can realize the distinction and online continuous counting of ferromagnetic particles and non-ferromagnetic particles in oil, and is suitable for online detection and analysis of oil, especially sailing ships Oil detection and analysis on the.

Description

technical field [0001] The invention belongs to the technical field of oil detection, and specifically relates to a microfluidic chip-based particle on-line detection device and a detection method thereof. Background technique [0002] Oil monitoring technology is a way to obtain the lubrication information and wear status of the machine by analyzing the performance changes of the lubricant being used and the wear particles carried by the monitored machine, as well as to evaluate the machine condition and predict the failure, and determine The cause of the failure, the type of failure and the technology of the failed part. Machine status detection based on oil monitoring technology is one of the essential methods in modern industrial maintenance activities, and has considerable economic benefits. The detection technology for metal abrasive particles in oil has become the main content of oil monitoring technology. [0003] According to the different working principles of th...

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Problems solved by technology

However, the resistive online monitoring technology has the disadvantage of low sensitivity and cannot detect tiny particles.

[0008] It can be seen from the above that the oil on-line detection technology in the prior art has certain limitations and cannot be well adapted to the needs of high sensitivity and on-line oil detection

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