Multi-signal synchronous feedback device for oil detection

A technology of feedback device and detection device, which is applied in the direction of measuring device, suspension and porous material analysis, instrument, etc., can solve the problems of limited detection ability and single measurement parameter, and achieve the effect of synchronous detection of multiple signals

Active Publication Date: 2019-07-19
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] According to the above-mentioned proposals, aiming at the technical problems of single measurement parameter and limited detection ability of the existing oil detection method, a method with multi-parameter measurement and capable of detecting four types of particle pollutants (ferromagnetic metal particles, non-ferrous particles) in the oil is provided. A multi-signal synchronous feedback device for oil detection with comprehensive discrimination and synchronous detection of magnetic metal particles, water droplets and air bubbles. The device of the present invention can effectively separate metal particles and prevent metal particles from affecting the capacitance detection results

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  • Multi-signal synchronous feedback device for oil detection
  • Multi-signal synchronous feedback device for oil detection

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Embodiment 1

[0041] like figure 1 As shown, the present invention provides a multi-signal synchronous feedback device for oil detection, including a detection device and an excitation-detection unit.

[0042]The detection device includes a microfluidic chip. The microfluidic chip includes a substrate 1 and a chip body arranged on the substrate 1. One end of the chip body is provided with a microchannel inlet 3, and the other end is provided with a microchannel 5 with a microchannel outlet 8. The microchannel 5 is also provided with a sensing unit I4, a deposition tank 6, and a sensing unit II7 in sequence; the microfluidic chip also includes a model material 2, and the substrate 1 is placed at the bottom of the microchannel 5 for fixing the microfluidic chip, the sensor unit The sensing unit I4 and the sensing unit II7, the model material 2 is poured on the outside of the microfluidic chip, the sensing unit I4 and the sensing unit II7.

[0043] like figure 2 , 3 As shown, the sensing u...

Embodiment 2

[0049] like figure 1 As shown, (on the basis of Embodiment 1), the present invention also provides a method for making a multi-signal synchronous feedback device for oil detection, comprising the following steps:

[0050] S1: Fix the microchannel inlet mold, the microchannel mold, the silicon steel sheet 10 wound with the single-layer coil 9, and two copper rods on the substrate 1 according to a predetermined position;

[0051] S2: pouring the molding material 2 into the substrate 1, wherein the two lead wires connecting the single-layer coil 9 and the two lead wires connecting the copper rods are arranged outside the modeling material 2 so that they are not poured by the modeling material;

[0052] S3: Place the chip poured with the model material 2 in an oven and bake at a temperature of 80° C. for 1 hour, so that the model material 2 is cured;

[0053] S4: Extract the micro-channel mold from the heated and cured model material 2, extract the micro-channel inlet mold to for...

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Abstract

The invention provides a multi-signal synchronous feedback device for oil detection. The device comprises a detection device and an exciting-detection unit; the detection device comprises a micro-fluidic chip and used for differentiating and detecting ferromagnetic metal particles, non-ferromagnetic metal particles, water drops and bubbles in the oil; a sedimentation tank is firstly arranged in the chip, the metal particles and the non-metallic particles can be effectively separated, thereby realizing synchronous detection of four particle pollutants; a measurement mode switching unit is saved, the chip can be directly connected with the exciting-detection unit, the response time of the signal collection is shortened, and the detection effect is more precise and efficient. The chip integrates two sensing units into a chip, the multi-parameter measurement on the induction, the resistance and capacitance in the oil is realized, thereby accomplishing the differentiating and detection of multiple particle pollutants in the lubricating oil and the hydraulic oil; an effective method is provided for performing oil online monitoring on the machine equipment, and the fault diagnosis can beperformed on the machine equipment.

Description

technical field [0001] The invention relates to the technical field of equipment oil system fault detection, in particular to a multi-signal synchronous feedback device for oil detection. Background technique [0002] Particle pollutants in oil are the most important cause of hydraulic system failures. Being able to detect information about particle pollutants in oil is a reliable solution for fault diagnosis of equipment systems. The testing methods for oil particle pollutants mainly include optical detection, acoustic detection, inductance detection and capacitance detection. Among them, the optical detection method has high detection accuracy, but it cannot distinguish the properties of particle pollutants, and is limited by the influence of oil transmittance. The acoustic detection method is to detect the particles in the oil by detecting the reflected sound wave, which is seriously affected by the environmental noise and the temperature change of the oil. The inductan...

Claims

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Application Information

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IPC IPC(8): G01N15/06
CPCG01N15/0656
Inventor 张洪朋史皓天徐志伟曾霖顾长智
Owner DALIAN MARITIME UNIVERSITY
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