CN106248539B - Optical density measurement and analysis system and method for spectrum sheet of rotary ferrograph - Google Patents
Optical density measurement and analysis system and method for spectrum sheet of rotary ferrograph Download PDFInfo
- Publication number
- CN106248539B CN106248539B CN201610842608.8A CN201610842608A CN106248539B CN 106248539 B CN106248539 B CN 106248539B CN 201610842608 A CN201610842608 A CN 201610842608A CN 106248539 B CN106248539 B CN 106248539B
- Authority
- CN
- China
- Prior art keywords
- spectrum
- eye
- microscope
- coverage area
- percentage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001228 spectrum Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000004458 analytical method Methods 0.000 title claims description 32
- 238000000424 optical density measurement Methods 0.000 title claims description 18
- 239000002245 particle Substances 0.000 claims abstract description 85
- 238000005286 illumination Methods 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- 238000006073 displacement reaction Methods 0.000 claims description 20
- 238000005299 abrasion Methods 0.000 claims description 15
- 229910052742 iron Inorganic materials 0.000 claims description 15
- 239000006061 abrasive grain Substances 0.000 claims description 11
- 238000005070 sampling Methods 0.000 claims description 10
- 230000000007 visual effect Effects 0.000 claims description 10
- 239000003921 oil Substances 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 2
- 230000003595 spectral effect Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 14
- 238000012360 testing method Methods 0.000 abstract description 6
- 230000008021 deposition Effects 0.000 description 26
- 238000004445 quantitative analysis Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 5
- 210000003128 head Anatomy 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004451 qualitative analysis Methods 0.000 description 3
- 208000003464 asthenopia Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005307 ferromagnetism Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001303 quality assessment method Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/04—Investigating sedimentation of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/565—Investigating resistance to wear or abrasion of granular or particulate material
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a system and a method for measuring and analyzing optical density of a spectrum slice of a rotary ferrograph, wherein the system comprises a three-eye microscope, an electric object stage with a limit switch, a motor driver, a photoelectric sensor, a transimpedance amplifier, a multifunctional board card and an upper computer; the three-eye microscope comprises a light source and an objective lens, and an electric objective table with a limit switch is arranged between the light source and the objective lens; the third eye of the three-eye microscope is connected with the photoelectric sensor, the illumination receiving surface of the photoelectric sensor is perpendicular to the third eye light path, and the center of the illumination receiving surface of the photoelectric sensor is positioned on the third eye light path; the photoelectric sensor is connected with the multifunctional board card through the transimpedance amplifier, the multifunctional board card is also respectively connected with the upper computer and the motor driver, and the motor driver is connected with the electric object stage with the limit switch. The method can automatically measure the percentage of the coverage area of abrasive particles at different positions of the spectrum slice, lighten the labor intensity of operators and improve the testing efficiency and the testing data accuracy.
Description
Technical Field
The invention relates to a system and a method for measuring and analyzing optical density of a spectrum slice of a rotary ferrograph, belonging to the technical field of ferrograph quantitative analysis.
Background
The iron spectrometer is widely applied to wear monitoring and lubricating oil quality assessment of various machine systems, and can also be used for researching friction states and wear mechanisms. Therefore, the device is an important instrument for realizing machine working condition monitoring, equipment fault positioning and particle tribology research. As for the analysis methods employed in the iron spectrum analysis technique, there are mainly classified into qualitative analysis methods and quantitative analysis methods. The qualitative analysis method is that the oil sample is retrieved from the site by the monitoring personnel, the oil sample is processed to form a ferric spectrum sheet, the ferric spectrum microscope is used for carrying out morphology observation, size measurement and composition analysis on the abrasion particles deposited on the ferric spectrum sheet, the types and compositions of the abrasion particles are determined on the basis, and the abrasion form, the abrasion reason, the abrasion degree, the types of serious abrasion parts and the like of the monitored equipment are judged. The quantitative analysis method is a ferrograph analysis method which can be directly carried out on site or can be used for off-line analysis after sampling, the analysis method is mainly used for analyzing the friction and wear state of equipment according to the concentration of wear particles and the size distribution of the wear particles, and then the working condition monitoring and fault diagnosis are carried out by utilizing a function analysis method, a trend analysis method, a gray theory and other methods.
The ferrographs are mainly divided into an online ferrograph and an offline ferrograph, wherein the online ferrograph is directly installed in a circulating lubrication system of field equipment to provide online readings on abrasive dust density and the percentage of large abrasive particles in oil, and the offline ferrograph needs to collect oil samples from the field equipment and send the oil samples back to a laboratory to be analyzed by operating the instruments by professionals. Although the online ferrograph has the advantages of real time, rapidness, simplicity and convenience, the stability and comparability of the result are difficult to ensure because of the friction and wear state of the equipment and the complexity of the change of the friction and wear state and the analysis result are inevitably influenced by various factors such as working conditions, working environments and the like. The off-line ferrograph is mainly divided into a direct-reading ferrograph, an analytical ferrograph, a rotary ferrograph and the like. The analysis type iron spectrometer and the rotary type iron spectrometer can observe and research the morphology of abrasive particles under a microscope and measure the coverage area percentage of the abrasive particles on a spectrum sheet through the optical density measuring instrument, and can be used for qualitative analysis and quantitative analysis, and the direct-reading type iron spectrometer can only measure the number of the abrasive particles and the approximate size distribution thereof, namely can only be used for quantitative analysis, so that the application range of the analysis type iron spectrometer and the rotary type iron spectrometer is wider than that of the direct-reading type iron spectrometer.
When using a conventional densitometer to measure the percentage of coverage area of abrasive particles on a rotating spectrometer slide, an operator is required to manually adjust the microscope stage at all times and observe the position of the field of view through the microscope eyepiece, and read the percentage of coverage area of abrasive particles in the field of view as the field of view is observed to move to the position to be measured. Human errors can be generated through manual adjustment and human eye observation, meanwhile, visual fatigue can be generated when human eyes observe for a long time, and observation efficiency is reduced. The measurement of a rotary iron spectrum sheet is usually completed, 24 view field positions on the spectrum sheet need to be manually found by using a traditional optical density measuring instrument, the workload is large, and the measurement time is long. Furthermore, conventional densitometers can only measure the percentage of the coverage area of the abrasive particles, and then various quantitative indicators based on the percentage of the coverage area of the abrasive particles still need to be manually calculated. In summary, the conventional optical density measuring instrument cannot meet the requirement of quantitative analysis of a spectrum slice of a rotary ferrograph.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the system and the method for measuring and analyzing the optical density of the spectrum slice of the rotary ferrograph can automatically measure the percentage of coverage areas of abrasive particles at different positions of the spectrum slice, reduce the labor intensity of operators and improve the testing efficiency and the accuracy of testing data.
The invention adopts the following technical scheme for solving the technical problems:
the system comprises a three-eye microscope, an electric object stage with a limit switch, a motor driver, a photoelectric sensor, a transimpedance amplifier, a multifunctional board card and an upper computer; the three-eye microscope comprises a light source and an objective lens, and an electric objective table with a limit switch is arranged between the light source and the objective lens; the third eye of the three-eye microscope is connected with the photoelectric sensor, the illumination receiving surface of the photoelectric sensor is perpendicular to the third eye light path, and the center of the illumination receiving surface of the photoelectric sensor is positioned on the third eye light path; the photoelectric sensor is connected with the multifunctional board card through the transimpedance amplifier, the multifunctional board card is also respectively connected with the upper computer and the motor driver, and the motor driver is connected with the electric object stage with the limit switch.
As a further scheme of the system, the electric objective table with the limit switch is provided with a square groove for fixing the rotary ferrograph spectrum piece, and one side of the square groove is provided with a groove notch.
As a preferred embodiment of the system of the present invention, the light source is a light emitting diode.
As a preferred embodiment of the system of the present invention, the photosensor is a silicon photocell.
As a preferred embodiment of the system of the present invention, the electric stage with limit switch is driven by a motor, which is a stepper motor or a servo motor.
A method for measuring and analyzing optical density of a spectrum slice of a rotary ferrograph comprises the following steps:
step 1, performing zero adjustment and one adjustment calibration operation on a spectral slice optical density measurement analysis system of a rotary ferrograph;
step 2, placing a rotary ferrograph spectrum slice to be measured in a square groove, controlling an electric objective table to move along a visual field displacement path of a three-eye microscope through an upper computer, and simultaneously recording and storing the percentage of the coverage area of grinding particles in the visual field of the three-eye microscope and the center distance of the visual field from the center of the spectrum slice;
step 3, obtaining index values for optical density measurement analysis according to the percentage of the coverage area of the abrasive particles;
and step 4, drawing a trend graph of the index changing along with the sampling time, and judging the mechanical abrasion condition through a three-wire value method.
As a preferable scheme of the method, the specific steps of the step 1 are as follows:
11 Turning on a light source, presetting the voltage of the light source to about 4V, observing spectrum piece abrasive particles by using a 10X objective lens and focusing, and then converting into 40X objective lens to observe the spectrum piece abrasive particles and focusing;
12 Moving the field of view of the three-eye microscope to a clean place without abrasive particles on a spectrum slice, adjusting a microscope light path to enable light to enter the third eye, and adjusting the number displayed on a system upper computer to be 0.000;
13 Adjusting the microscope light path to prevent light from entering the third order, and adjusting the number displayed on the upper computer of the system to 1.000;
14 Covering a black-and-white filter with a shading rate of 50% on the light emergent hole, and adjusting the voltage of the light source to enable the number displayed on the upper computer of the system to be 0.500;
15 If the number displayed on the upper computer of the system is not 0.000, continuing to adjust the number displayed on the upper computer of the system to 0.000;
16 Repeating 14), 15) to enable the optical density measurement analysis system to simultaneously meet the requirements of 13) and 14), and completing the calibration of the optical density measurement analysis system.
As a preferable scheme of the method, the specific steps of the step 2 are as follows:
21 The blank rotary type iron spectrum sheet with two crossed diagonal lines is horizontally placed in the groove, the diagonal line crossing points, namely the center of the spectrum sheet, are observed through an ocular, the objective table is horizontally moved to enable the crossing points to be located at the center of a view field, and the position of the electric objective table is determined to be a zero point at the moment;
22 Taking the center of the spectrum piece as the displacement origin of the microscope field when the electric object stage is positioned at the zero point, and distributing 8 linear displacement paths of the microscope field at intervals of 45 degrees, wherein each displacement path starts from the origin and ends at a position 3mm outside the outer ring of the spectrum piece;
23 The method comprises the steps of) selecting any path from an origin to a destination for automatic resetting, and simultaneously recording and storing the percentage of the coverage area of abrasive particles in the field of view of the three-eye microscope and the distance between the center of the field of view and the center of a spectrum slice, wherein the percentage of the coverage area of abrasive particles in the field of view is not calculated during resetting;
24 The same action is carried out on the next path with an interval angle of 45 degrees in the clockwise direction, and the electric object stage automatically resets and stops after the movement on 8 different paths is completed.
As a preferable scheme of the method, the specific steps of the step 3 and the step 4 are as follows:
31 Extracting abrasive grain coverage area percentage maxima in three intervals of 4.5mm-6.5mm, 8.5mm-10.5mm and 13.5mm-15.5mm of the center distance spectrum piece center distance of the field of view from data of the abrasive grain coverage area percentage in the field of view of the three-eye microscope and the center distance spectrum piece center distance of the field of view, and taking the 3 maxima as the inner ring abrasive grain coverage area percentage, the middle ring abrasive grain coverage area percentage and the outer ring abrasive grain coverage area percentage of the spectrum piece respectively;
32 After the movement of 8 visual field displacement paths is completed, calculating and storing the average value of the coverage area percentage of the abrasive particles in the inner ring of the spectrum sliceA L Average value of percentage coverage area of ring abrasive particles in spectrum sliceA M Average value of percentage coverage area of abrasive particles of outer ring of spectrum sliceA S Concentration of abrasive particlesA L +A M +A S Wear intensity indexA L +(A M +A S )][A L -(A M +A S )]；
33 Drawing a trend graph of the abrasive particle concentration and the abrasion intensity index of the oil sample at the same mechanical part along with the change of sampling time, setting 3 critical lines of attention, warning and fault according to a three-line value method, and judging the abrasion condition of the machine.
Compared with the prior art, the technical scheme provided by the invention has the following technical effects:
the system and the method for measuring and analyzing the optical density of the spectrum slice of the rotary ferrograph can automatically measure the percentage of coverage areas of abrasive particles at different positions of the spectrum slice, reduce the workload of operators and the measurement error, conveniently store, process and display test data, graphically display different test data according to the selection of users, and facilitate the rapid analysis and prediction of the users.
Drawings
FIG. 1 is a schematic diagram of the structure of the optical density measurement and analysis system of a spectrum slice of a rotary ferrograph of the present invention.
FIG. 2 is a schematic diagram of a displacement path of a rotating spectrometer slide and a microscope field of view according to the present invention.
FIG. 3 is a schematic view of a recess and a notch of an electric stage according to the present invention; wherein, (a) is a top view and (b) is a side view.
FIG. 4 is a schematic view of a conventional densitometer in selecting the position of 8 observation fields of view on each abrasive particle deposition ring of a spectrum slice; wherein, (a) is an inner ring, (b) is a middle ring, and (c) is an outer ring.
FIG. 5 is a flow chart of the invention in which the host computer controls the movement of the motorized stage along the displacement path of the microscope field of view.
FIG. 6 is a flow chart of a method of optical density measurement analysis of a rotating ferrograph spectrum slice of the present invention.
Wherein, a 1-trinocular microscope; 2-a light source; 3-an electric stage; 4-rotating a spectrum piece of a ferrograph; 5-a photosensor; a 6-transimpedance amplifier; 7-a multifunctional board card; 8-an upper computer; 9-motor driver; 10-an inner ring of the abrasive particle deposition ring; 11-a ring of abrasive particle deposition rings; 12-an outer ring of the abrasive particle deposition ring; 13-a microscope field displacement path; 14-grooves; 15-groove notch; 16-microscope viewing field.
Description of the embodiments
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
As shown in FIG. 1, the optical density measurement and analysis system of the spectrum slice of the rotary ferrograph comprises a three-eye microscope 1, a light source 2, an electric object stage 3, a photoelectric sensor 5, a transimpedance amplifier 6, a multifunctional board card 7, an upper computer 8 and a motor driver 9; the light source 2 is a light-emitting diode, the generated light is monochromatic light, and the light intensity is controllable; the electric object stage 3 is driven by a motor, and the motor is a stepping motor or a servo motor; the electric object stage 3 is provided with a limit switch to prevent the electric object stage 3 from exceeding the limit of displacement; the electric object stage 3 is provided with a square groove 14 for fixing the rotary type iron spectrum piece 4, and one side of the groove 14 is provided with a groove notch 15 for clamping the spectrum piece 4; the photoelectric sensor 5 is arranged in the measuring head, and the measuring head is connected with a third eye of the three-eye microscope 1 through a fastening screw; the photoelectric sensor 5 is a silicon photocell, and the intensity of illumination and the generated photocurrent are in linear relation; the silicon photocell illumination receiving surface is perpendicular to the third eye light path of the microscope, and the center of the silicon photocell illumination receiving surface is positioned on the third eye light path axis of the three-eye microscope 1; the multifunctional board card 7 is not only a motor controller, but also an output signal collector of the transimpedance amplifier 6; the input end of the transimpedance amplifier 6 is connected with two poles of the photoelectric sensor 5, and the output end is connected with an analog signal input port of the multifunctional board card 7; the multifunctional board card 7 is connected to the upper computer 8 through a data line.
As shown in FIG. 2, the spectrum piece 4 of the rotary ferrograph is a plane transparent glass piece with the thickness of 55mm multiplied by 0.2mm, and according to the design of a magnetic circuit of a magnetic head of the rotary ferrograph, abrasive particles form three concentric circular abrasive particle deposition rings on the spectrum piece 4 after spectrum making, and the circle center of the deposition rings coincides with the center of the square spectrum piece 4. The radial width of each of the three abrasive particle deposition rings is 1mm, the outer diameter of the inner ring 10 of the abrasive particle deposition ring is 12mm, the outer diameter of the outer ring 11 of the abrasive particle deposition ring is 20mm, and the outer diameter of the outer ring 12 of the abrasive particle deposition ring is 30mm. Because the magnetic force lines are emitted from the center of the spectrum piece 4 to the periphery, the magnetic force from the inner ring 10 of the abrasive particle deposition ring to the outer ring 12 of the abrasive particle deposition ring sequentially becomes smaller, so that the abrasive particle size distribution deposited on the three abrasive particle deposition rings is that the abrasive particle size of the inner ring 10 of the abrasive particle deposition ring is largest, the number of rings 11 in the abrasive particle deposition ring is smallest, and the abrasive particle deposition ring outer ring 12 is smallest.
As shown in fig. 3 (a) and (b), a square groove 14 of 55.2mm×55.2mm×1mm is arranged on the center of the microscope electric stage 3 for fixing the spectrum piece 4; the cross section of the central through hole at the bottom of the groove 14 is 35mm multiplied by 35mm, so that the bottom of the groove 14 can form effective support for the spectrum piece, the observation of an abrasive particle deposition ring can not be blocked, and the spectrum piece 4 can not fall off from the through hole at the bottom of the groove 14; a groove notch 15 is arranged on one side of the groove 14 and is used for clamping the spectrum piece 4.
The 8 fields of view 16 of the conventional optical density measuring instrument for observing the inner ring of the spectrum piece 4 of the rotary ferrograph are shown in fig. 4 (a), the 8 fields of view 16 for observing the inner ring of the spectrum piece 4 are shown in fig. 4 (b), and the 8 fields of view 16 for observing the outer ring of the spectrum piece 4 are shown in fig. 4 (c). The inner side of the inner ring 10 of the abrasive particle deposition ring is the place with the greatest probability of serious abrasion particle deposition, so 8 symmetrical view fields are selected for observation at the inner side of the inner ring 10 of the abrasive particle deposition ring; the inner side of the ring 11 in the abrasive particle deposition ring is the place with the largest deposition probability of abrasion particles such as friction polymers, various oxides, nonferrous metal particles with weak ferromagnetism and the like, so 8 symmetrical view fields are selected for observation at the inner side of the ring 11 in the abrasive particle deposition ring; the outer side of the outer ring 12 of the abrasive particle deposition ring is the place where the deposition probability of corrosive abrasion particles is the greatest, so 8 symmetrical view fields are selected for observation at the outer side of the outer ring 12 of the abrasive particle deposition ring.
As shown in fig. 5, the control of the movement of the microscope motor stage 3 in the horizontal two-dimensional direction by the host computer 8 includes the steps of:
1) The blank rotary type iron spectrum sheet 4 with two crossed diagonal lines is horizontally placed in the groove 14, the diagonal line crossing points are observed through an ocular, the electric object table 3 is horizontally moved to enable the crossing points to be located at the center of a view field, and the position of the electric object table 3 is determined to be a zero point at the moment;
2) As shown in fig. 2, when the microscope electric stage 3 is positioned at the zero point, the center of the spectrum piece 4 is taken as the displacement origin of the microscope field, 8 microscope field linear displacement paths 13 are distributed at intervals of 45 degrees, and each displacement path starts from the origin and ends at a position 3mm beyond the outer ring of the spectrum piece 4;
3) The view field automatically resets after moving from the origin point to the end point on the right direction path, and moves on the next path with an interval angle of 45 degrees in the clockwise direction;
4) After the displacement on 8 different paths is completed, the motorized stage 3 is automatically reset and stopped.
As shown in fig. 6, the upper computer 8 measures the percentage of coverage area of abrasive particles, calculates and stores quantitative index values of a ferrograph, draws a trend graph of quantitative analysis index changes along with sampling time, and judges the mechanical wear condition according to the quantitative analysis index values and wear trend, and specifically includes the following steps:
1) Performing zero-adjustment and one-adjustment operation on the optical density measurement and analysis system;
2) The spectrum piece 4 to be measured is placed in the objective table groove 14, and when the view field moves forward on the displacement path, the percentage of the coverage area of the abrasive particles and the distance between the center of the view field and the center of the spectrum piece are displayed in real time, and a spectrum position curve is drawn;
3) Respectively extracting abrasive particle coverage area maximum values in three regions of which the center distance of a view field from the center of the spectrum piece 4 is 4.5mm-6.5mm, 8.5mm-10.5mm and 13.5mm-15.5mm, wherein the 3 maximum values are respectively the inner ring abrasive particle coverage area percentage, the middle ring abrasive particle coverage area percentage and the outer ring abrasive particle coverage area percentage of the spectrum piece 4;
4) After all 24 maxima are extracted, calculating and displaying average percentage coverage area of abrasive particles of 8 different fields of view in the inner ring of the spectrum piece 4Value ofA L Average value of percentage coverage area of abrasive particles in 8 different fields of view in spectrum sliceA M Average value of percentage coverage area of abrasive particles of 8 different visual fields of spectrum slice outer ringA S Concentration of abrasive particlesA L +A M +A S Wear intensity indexA L +(A M +A S )][A L -(A M +A S )]；
5) Inputting a sample name and sampling time to store the quantitative index;
6) For all samples with the same name, extracting the same quantitative index and making a trend graph of the change of the quantitative index along with the sampling time;
7) According to the three-wire value method, 3 critical lines of attention, warning and fault are set, so that a user can simply and intuitively monitor the state of the mechanical equipment.
Wherein, zeroing and adjusting one comprises the following operations:
1) Turning on a microscope transmission light source, presetting the voltage of the light source to about 4V, observing spectrum piece abrasive particles by using a 10X objective lens, focusing, and then converting into 40X objective lens to observe the spectrum piece abrasive particles and focusing;
2) Moving the view field to a clean place without abrasive particles on a spectrum slice, then pulling out a microscope optical path control rod to enable light to enter a measuring head, clicking a zero setting button on an operation panel of an optical density measurement analysis system to enable the number on a digital display screen to be 0.000;
3) Pushing the control rod in to make light not enter the measuring head, clicking a key of 'one adjustment' on an operation panel of the optical density measurement and analysis system to make the number on the digital display screen be 1.000;
4) Covering a black-and-white filter with a shading rate of 50% on a light-emitting hole of a transmission light of a microscope base, and adjusting a voltage adjusting knob of a transmission light source to enable the number on a digital display screen to be 0.500;
5) Taking out the black-and-white filter, if the number on the digital display screen is not 0.000, continuously clicking a zero setting button on the operation panel to enable the number on the digital display screen to be 0.000;
6) Repeating the steps 4) and 5) to enable the optical density measurement analysis system to simultaneously meet the requirements of the steps 3) and 4), and completing the system calibration.
Wherein, the percentage of the coverage area of the abrasive particles refers to the percentage of the coverage area of the abrasive particles in the whole field of view observed by a microscope.
If only the data acquisition time is considered, the traditional optical density measuring instrument at least needs 12 minutes to finish the measurement of the percentage of the coverage areas of the abrasive particles of 24 fields, but the optical density measuring and analyzing system of the spectrum sheet of the rotary iron spectrometer disclosed by the invention is used for finishing the measurement of the percentage of the coverage areas of the abrasive particles of 8 field displacement paths for less than 4 minutes, so that the data acquisition time of nearly 70% is saved, and meanwhile, the problem of visual fatigue of operators due to long-time observation is solved. In addition, after the data measurement is completed, the traditional optical density measuring instrument also needs an operator to calculate other quantitative parameters according to the percentage of the coverage area of the abrasive particles, and the optical density measuring and analyzing system of the spectrum piece of the rotary iron spectrum instrument automatically calculates other quantitative parameters in the process of data acquisition. Meanwhile, after data acquisition and analysis are completed, the invention inputs the sample name and sampling time to store quantitative parameters; and for all samples with the same name, extracting the same quantitative parameter to make a trend graph of the change of the same quantitative parameter along with the sampling time, and monitoring the state of the mechanical equipment by a three-wire value method, so that the method is simple and visual.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereto, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the present invention.
Claims (4)
1. An analysis method based on a rotary ferrograph spectrum piece optical density measurement analysis system comprises a three-eye microscope, an electric objective table with a limit switch, a motor driver, a photoelectric sensor, a transimpedance amplifier, a multifunctional board card and an upper computer; the three-eye microscope comprises a light source and an objective lens, and an electric objective table with a limit switch is arranged between the light source and the objective lens; the third eye of the three-eye microscope is connected with the photoelectric sensor, the illumination receiving surface of the photoelectric sensor is perpendicular to the third eye light path, and the center of the illumination receiving surface of the photoelectric sensor is positioned on the third eye light path; the photoelectric sensor is connected with the multifunctional board card through the transimpedance amplifier, the multifunctional board card is also connected with the upper computer and the motor driver respectively, the motor driver is connected with the electric objective table with the limit switch, the electric objective table with the limit switch is provided with a square groove for fixing the spectrum piece of the rotary ferrograph, and one side of the square groove is provided with a groove gap; the analysis method is characterized by comprising the following steps:
step 1, performing zero adjustment and one adjustment calibration operation on a spectral slice optical density measurement analysis system of a rotary ferrograph; the method comprises the following specific steps:
11 Turning on a light source, presetting the voltage of the light source to about 4V, observing spectrum piece abrasive particles by using a 10X objective lens and focusing, and then converting into 40X objective lens to observe the spectrum piece abrasive particles and focusing;
12 Moving the field of view of the three-eye microscope to a clean place without abrasive particles on a spectrum slice, adjusting a microscope light path to enable light to enter the third eye, and adjusting the number displayed on a system upper computer to be 0.000;
13 Adjusting the microscope light path to prevent light from entering the third order, and adjusting the number displayed on the upper computer of the system to 1.000;
14 Covering a black-and-white filter with a shading rate of 50% on the light emergent hole, and adjusting the voltage of the light source to enable the number displayed on the upper computer of the system to be 0.500;
15 If the number displayed on the upper computer of the system is not 0.000, continuing to adjust the number displayed on the upper computer of the system to 0.000;
16 Repeating 14), 15) to enable the optical density measurement and analysis system to simultaneously meet the requirements of 13) and 14), and completing the calibration of the optical density measurement and analysis system;
step 2, placing a rotary ferrograph spectrum slice to be measured in a square groove, controlling an electric objective table to move along a visual field displacement path of a three-eye microscope through an upper computer, and simultaneously recording and storing the percentage of the coverage area of grinding particles in the visual field of the three-eye microscope and the center distance of the visual field from the center of the spectrum slice; the method comprises the following specific steps:
21 The blank rotary type iron spectrum sheet with two crossed diagonal lines is horizontally placed in the groove, the diagonal line crossing points, namely the center of the spectrum sheet, are observed through an ocular, the objective table is horizontally moved to enable the crossing points to be located at the center of a view field, and the position of the electric objective table is determined to be a zero point at the moment;
22 Taking the center of the spectrum piece as the displacement origin of the microscope field when the electric object stage is positioned at the zero point, and distributing 8 linear displacement paths of the microscope field at intervals of 45 degrees, wherein each displacement path starts from the origin and ends at a position 3mm outside the outer ring of the spectrum piece;
23 The method comprises the steps of) selecting any path from an origin to a destination for automatic resetting, and simultaneously recording and storing the percentage of the coverage area of abrasive particles in the field of view of the three-eye microscope and the distance between the center of the field of view and the center of a spectrum slice, wherein the percentage of the coverage area of abrasive particles in the field of view is not calculated during resetting;
24 The same action is carried out on the next path with the interval angle of 45 degrees in the clockwise direction, and after the movement on 8 different paths is completed, the electric object stage is automatically reset and stopped;
step 3, obtaining an index value for optical density measurement and analysis according to the percentage of the coverage area of the abrasive particles, drawing a trend graph of the index changing along with the sampling time, and judging the mechanical abrasion condition by a three-line value method; the method comprises the following specific steps:
31 Extracting abrasive grain coverage area percentage maxima in three intervals of 4.5mm-6.5mm, 8.5mm-10.5mm and 13.5mm-15.5mm of the center distance spectrum piece center distance of the field of view from data of the abrasive grain coverage area percentage in the field of view of the three-eye microscope and the center distance spectrum piece center distance of the field of view, and taking the 3 maxima as the inner ring abrasive grain coverage area percentage, the middle ring abrasive grain coverage area percentage and the outer ring abrasive grain coverage area percentage of the spectrum piece respectively;
32 After completing the movement of 8 visual field displacement paths, calculating and storing a spectrum slice inner ring abrasive particle coverage area percentage average value A L Average percentage of coverage area of ring abrasive particles in spectrum sliceValue A M Average value A of percentage coverage area of abrasive particles of outer ring of spectrum slice S Concentration of abrasive grains A L +A M +A S Wear intensity index [ A L +(A M +A S )][A L -(A M +A S )]；
33 Drawing a trend graph of the abrasive particle concentration and the abrasion intensity index of the oil sample at the same mechanical part along with the change of sampling time, setting 3 critical lines of attention, warning and fault according to a three-line value method, and judging the abrasion condition of the machine.
2. The method of claim 1, wherein the light source is a light emitting diode.
3. The method of claim 1, wherein the photosensor is a silicon photocell.
4. The method of claim 1, wherein the motorized stage with limit switch is driven by a motor, which is a stepper motor or a servo motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610842608.8A CN106248539B (en) | 2016-09-22 | 2016-09-22 | Optical density measurement and analysis system and method for spectrum sheet of rotary ferrograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610842608.8A CN106248539B (en) | 2016-09-22 | 2016-09-22 | Optical density measurement and analysis system and method for spectrum sheet of rotary ferrograph |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106248539A CN106248539A (en) | 2016-12-21 |
| CN106248539B true CN106248539B (en) | 2023-07-18 |
Family
ID=57600164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610842608.8A Active CN106248539B (en) | 2016-09-22 | 2016-09-22 | Optical density measurement and analysis system and method for spectrum sheet of rotary ferrograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106248539B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489838A (en) * | 2018-03-22 | 2018-09-04 | 合肥工业大学 | Contact surface in-situ observation frictional wear experiment platform |
| CN108414409B (en) * | 2018-05-11 | 2024-04-30 | 中国矿业大学 | System and method for collecting spectrum sheet image of rotary ferrograph |
| CN110595963B (en) * | 2019-10-14 | 2024-03-22 | 中国矿业大学 | Online rotary ferrograph and equipment oil online monitoring method |
| CN111282713B (en) * | 2020-02-14 | 2021-11-12 | 山东大学 | Electromagnetic device and method for ordered deposition of wear particles |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2057755U (en) * | 1989-10-24 | 1990-05-30 | 杭州轴承试验研究中心 | Iron spectrum slice optical density admeasuring apparatus |
| CN200982945Y (en) * | 2006-12-18 | 2007-11-28 | 中国石油天然气集团公司 | Ironic spectrum analyzer |
| CN202869652U (en) * | 2012-09-18 | 2013-04-10 | 华东师范大学 | Microscopic hyper-spectral imaging system |
| CN103439229B (en) * | 2013-08-06 | 2016-01-20 | 西安交通大学 | A kind of quick method for analyzing iron spectrum based on digital video |
| CN103695305B (en) * | 2013-12-18 | 2016-06-22 | 麦克奥迪实业集团有限公司 | A kind of gray scale photographic head for micrometron and cell comprehensive analysis device |
| CN103983543B (en) * | 2014-05-15 | 2017-01-04 | 西安交通大学 | A kind of online image visual ferrum spectrum imaging system |
| CN105424189B (en) * | 2015-12-04 | 2017-11-07 | 江南大学 | A kind of multi-functional microspectrum imaging system of scan-type |
| CN206057140U (en) * | 2016-09-22 | 2017-03-29 | 中国矿业大学 | A kind of rotary-ferrograph spectral slice photo densitometry analysis system |
-
2016
- 2016-09-22 CN CN201610842608.8A patent/CN106248539B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106248539A (en) | 2016-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106248539B (en) | Optical density measurement and analysis system and method for spectrum sheet of rotary ferrograph | |
| US10229310B2 (en) | High throughput partial wave spectroscopic microscopy and associated systems and methods | |
| CN107463789B (en) | Integrated automatic calibration device and calibration method for medical display | |
| US6518554B1 (en) | Reverse focusing methods and systems | |
| CN103792686B (en) | A kind of contact lens comprehensive detector | |
| US7817287B2 (en) | Optical three-dimensional measurement device and filter process method | |
| US20130010281A1 (en) | Inspection method and inspection device | |
| JP6224583B2 (en) | Hematology analyzer calibration and evaluation | |
| US9471984B2 (en) | Method for self-calibration of a microscope apparatus | |
| CN109839369B (en) | Method for determining graphite order degree based on laser Raman Mapping | |
| US7394545B2 (en) | Apparatus for characterizing and measuring the concentration of opaque particles within a fluid sample | |
| CN105937877B (en) | Include the chromatography distance measuring sensor of high-sensitivity measurement pattern | |
| CN108414409B (en) | System and method for collecting spectrum sheet image of rotary ferrograph | |
| EP4107515A1 (en) | Imaging assisted scanning spectroscopy for gem identification | |
| CN206057140U (en) | A kind of rotary-ferrograph spectral slice photo densitometry analysis system | |
| CN102927933A (en) | Method of measuring surface roughness by using confocal laser scanning microscope | |
| CN110095262B (en) | Device for detecting optical crosstalk transmittance between optical fibers in optical fiber image transmission element | |
| CN200982945Y (en) | Ironic spectrum analyzer | |
| CA2149516A1 (en) | Method for checking the surface condition of one side of a solid, and device therefor | |
| WO2004040234B1 (en) | Arrangement for measuring the geometry or structure of an object | |
| CN113758939B (en) | Method for representing metal surface cleanliness by using metal surface reflection and scattering spectrum | |
| DE102019101734B4 (en) | Illumination device for an imaging optical device and a method for optical analysis of an object | |
| CN103868940A (en) | Fluorescence analyser optical closed-loop control method adopting computer vision technology | |
| CN110095263B (en) | Characterization method for optical crosstalk performance between optical fibers in optical fiber image transmission element | |
| Shalygin et al. | Physical features of control of the surface relief of precision products |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |