CN101118217B - Vieri experiment indicator paper colors identification device - Google Patents
Vieri experiment indicator paper colors identification device Download PDFInfo
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- CN101118217B CN101118217B CN200710018619A CN200710018619A CN101118217B CN 101118217 B CN101118217 B CN 101118217B CN 200710018619 A CN200710018619 A CN 200710018619A CN 200710018619 A CN200710018619 A CN 200710018619A CN 101118217 B CN101118217 B CN 101118217B
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Abstract
The present invention discloses a test paper color identification device in a Christian Vieri experiment, and comprises a sample cup position synchronous coder, a lighting assembly, a 3CCD color videocamera and an industrial control machine which is programmed with an image processing and color distinguish software bag. The sample cup position synchronous coder is used to offer being location signal that the sample cup is just opposite to the observing window of a Christian Vieri experiment calorstat. A still image of the sample cup test paper which is just opposite to the observing window can be captured by the image processing and color distinguish software bag from the video output of the 3CCD color video camera, and the image is intercepted, calculated and identified. The color markerof the test paper in the sample cup at the current hour is finally obtained. The present invention has the main advantages that the influence which is generated by the brightness of illumination to the color identification is effectively eliminated. The precision is high, the speed is fast and the repeatability is good in the color identification. So the uncertainty of the fixed value in the Christian Vieri experiment is effectively reduced. The invention founds a base for the automatization of the operation of the Christian Vieri experiment and the quantitative transmission of the identifiedstandard of the test paper color.
Description
Technical field
The invention belongs to the machine vision technique field, relate generally to a kind of based on video image measurement mechanism that handle, that be applied to the automatic identification of gunpowder Vieri experiment indicator paper colors.
Technical background
Vieri experiment claims litmus paper test again, be a kind of be the basic skills of the gunpowder soundness test of base with the nitrate.Its principle is: with a certain amount of gunpowder sample put into have litmus paper dimension also in the sample cup seal, and the sample cup is put into 106.5 ± 0.5 ℃ thermostat heating, observation sample decomposes the NO that discharges
2Make time of test paper color change with the litmus paper effect, judge gunpowder or nitrocellulosic stability.The major advantage of this test method is that the result is stable, reliability is high, has used last 100 years, remains many countries so far and judges one of main method of gunpowder stability.
When carrying out Vieri experiment according to national military standard GJB 770A-97, adopt a kind of Vieri experiment thermostats of special use, the sample cup (general each 10-15) that gunpowder sample and litmus paper are housed is placed on the support of a rotation in the thermostat, and support rotates with the speed that per minute 5～8 changes.When sample heats in thermostat, litmus paper becomes redness by initial blueness gradually, according to the test standard requirement, divide six class to differentiate the test paper color: " L-blueness ", " Lz-bluish violet ", " Z-purple ", " Zm-purple rugose rose (Rosa rugosa var look ", " M-is rose-colored ", " Ho-redness ".Be placed in the sample cup because litmus paper is a volume, so the both sides of litmus paper have certain overlappingly, and in process of the test, the lap change color of litmus paper lags behind not lap; Simultaneously, because there is reticulate pattern in test paper, change in color also is inconsistent.Operating personnel distinguished the color of test paper lap in each sample cup in per 30 minutes by the watch window of thermostat, write down each according to six above-mentioned color class and observe the color mark of test paper lap constantly, become redness or the sample brown cigarette of emerging up to the color of full seven hours or test paper by initial blueness, can take out sample cup ventilation cooling, carry out the test of next round again.Process of the test to one group of sample generally needs to continue tens hours.
For a long time, China continues to use thermostat and the artificial test method that the former Soviet Union introduces always, and the differentiation of test paper color depends on operating personnel's naked eyes and distinguishes.Because artificial unaided eye discrimination is difficult to the unified color references of strict regulations, lack effective magnitude transferring method, though adopted standard medicine, standard test paper and regularly hold operating personnel and unify measures such as operation meeting, still exist measuring accuracy low, big this essential defective of personal error; Simultaneously, because the longer duration of test, operating personnel need changing shifts, and the different operating personnel's that caused by illumination difference, personnel's visual fatigue and break tour color is differentiated error, has more increased the measuring error of this method.Under the at present artificial unaided eye discrimination mode, to gunpowder standard substance and standard test paper, the uncertainty of Vieri experiment definite value can only reach 10%～15%.
Summary of the invention
The technical problem to be solved in the present invention is: the essential defective at now distinguish the test paper color with artificial naked eyes in the Vieri experiment provides a kind of Vieri experiment indicator paper colors identification device that adopts computer digit color recognition technology.This device can quantitative identification test paper change color, reduces the uncertainty of Vieri experiment definite value, thereby lays the first stone for the quantitative transmission of Vieri experiment operation automation and test paper color discrimination standard.
For solving the problems of the technologies described above, the present invention includes the sample cup position synchronous scrambler that contains code-wheel and two photoelectric commutators, the light fixture that contains illuminating lamp and lighting lamp power, the 3CCD colour TV camera, the switching value input card is housed, on-off output card, the Industrial Control Computer of RGB three primary colours video frequency collection card and Flame Image Process and color discrimination software package, the rotating shaft of sample cup support is connected in described code-wheel and the Vieri experiment thermostats, have on it and sample cup hole number identical and position corresponding codes groove and a notch on the sample cup support, described two photoelectric commutators constitute by luminotron that is positioned at described code-wheel top and the photoelectric conversion tube that is positioned at described code-wheel below, when any one sample cup forwards watch window over against Vieri experiment thermostats to sample cup support, the luminotron of first photoelectric commutator and photoelectric conversion tube just in time with the corresponding codes groove over against, first photoelectric commutator provides high level signal to described switching value input card, when the sample cup bracket holes of placing the thermometric platinum resistance forwards described watch window to, the luminotron of first photoelectric commutator and photoelectric conversion tube just in time with the corresponding codes groove over against, and the luminotron of second photoelectric commutator and photoelectric conversion tube just in time with described notch over against, first, second photoelectric commutator provides high level signal to described switching value input card simultaneously; Described light fixture and 3CCD colour TV camera are placed over against the watch window of Vieri experiment thermostats, lighting lamp power is connected with first solid-state relay on the described on-off output card, and camera power supply is connected with second solid-state relay on the described on-off output card; Described Flame Image Process and color discrimination software package contain color mark database, test result data storehouse, parameter module, energy supply control module, display module, sample cup synchronizing signal processing module, image capture module, color-identifying module are set: described color mark database has six pairing redness of color class and blue ratio of tens kinds of sample Types of Medicine; Each test paper color data and identification result of gathering are constantly preserved in described test result data storehouse; Described parameter is provided with the Types of Medicine parameter that module is used for being provided with each sample sample that cup is put when testing; Described first, second solid-state relay of corresponding control is switched on or switched off lighting lamp power, camera power supply to described energy supply control module in the beginning of a test period or when finishing; Described display module is gathered the video output of described 3CCD colour TV camera by the three primary colours video frequency collection card, all the time show the on-the-spot dynamic image of test paper in the sample cup in a test period by display screen, test period finishes the color mark that the back shows test paper in each sample cup; The function of described sample cup synchronizing signal processing module is, when having the switching value signal, calls described switching value input card described image capture module when inquiring, simultaneously judge according to the way of switching value signal whether current be the sample cup that test paper is housed over against described watch window, if be judged as is then to call described color-identifying module; Described image capture module is caught the rest image of test paper in the frame sample cup by RGB three primary colours video frequency collection card and it is deposited in the frame buffer zone; The function of described color-identifying module is, choose and work as the former frame rest image in the frame buffer zone and intercept the fixedly rectangular area that has test paper lap image, to this fixedly in the rectangular area all pixels ask for RGB three primary colours mean value separately, obtain the ratio of red mean value and blue average values again, the reference data of six class of corresponding test agent test paper color in this ratio and the described color mark database is made comparisons, determine the color mark of test paper in current sample cup this moment and result of determination is deposited in the described test result data storehouse with tabular form.
According to the present invention, the on-the-spot dynamic image size of test paper is 192 * 144 pixels in the described sample cup; Described fixedly rectangular area is 44 * 64 pixels.
Beneficial effect of the present invention is embodied in the following aspects.
(1) adopts and to ask for RGB three primary colours mean value separately corresponding to all pixels in the fixedly rectangular area of test paper lap in institute's capturing still image, as the basic data of test paper color, eliminated the change color inconsistency that exists reticulate pattern to cause because of test paper effectively.
(2) foundation of the ratio of red mean value and blue average values as the differentiation of test paper color obtained in employing, meets litmus paper and become red objective law by initial blueness gradually in process of the test, has bigger color identifying scope.Simultaneously, the numerical value that adopts ratio rather than some color can be eliminated the influence of brightness of illumination to tristimulus value effectively as the foundation of differentiating.
(3) the present invention adopts 3CCD colour TV camera, RGB three primary colours video frequency collection card, and three primary colours have separately independently light path, signal conditioner, transmission line and A/D transducer, can guarantee the digitized degree of accuracy of chrominance signal; Adopt the present invention that the Standard Colors piece of different colours is carried out repeated acquisition and processing, reduced the uncertainty of Vieri experiment definite value.
(4) the present invention can be used as the core apparatus of complete Vieri experiment automatic measuring and controlling system, changes the mode of operation that the artificial naked eyes of continuing to use for a long time of dependence are distinguished test paper, eliminates this essential defective of personal error; For quantitative transmission and the operation automation that realizes the Vieri experiment value lays the first stone.
(5) the present invention also portable be applied to other chemical field, have than application prospects.
Description of drawings
Fig. 1 is the composition synoptic diagram of Vieri experiment indicator paper colors identification device of the present invention.
Fig. 2 is the composition synoptic diagram of the sample cup position synchronous scrambler shown in Fig. 1.
Fig. 3 is the composition synoptic diagram of the lamp assembly shown in Fig. 1.
Fig. 4 is a test paper RGB three primary colours video signal collective schematic diagram.
Fig. 5 is the main program flow chart of Flame Image Process of the present invention and color discrimination software package.
Fig. 6 is certain test result constantly that the preferred embodiment of the present invention shows on screen.
Fig. 7 is the process flow diagram of the module of color-identifying shown in Fig. 5.
Fig. 8 is the test paper color three primary colours mean variation curve that the preferred embodiment of the present invention is tested certain gunpowder sample.
Embodiment
As shown in Figure 1, the preferred embodiments of the present invention comprise sample cup position synchronous scrambler, light fixture, 3CCD colour TV camera, Industrial Control Computer.Sample cup position synchronous scrambler is installed in the bottom of Vieri experiment thermostats, light fixture and 3CCD colour TV camera are over against the watch window of Vieri experiment thermostats, Industrial Control Computer is according to the output signal of sample cup position synchronous scrambler, finishes operations such as the image capturing that has litmus paper sample cup on the relevant position in the Vieri experiment thermostats, signal Processing, color-identifyings.
According to shown in Figure 2, sample cup position synchronous scrambler contains code-wheel 1, first photoelectric commutator 2, second photoelectric commutator 3.Code-wheel 1 is the rosette that has axis hole, and it is connected in the rotating shaft of Vieri experiment thermostats and can rotates synchronously with sample cup support; Disk is provided with several codings groove 1-1 and a notch 1-2, and several coding grooves 1-1 are distributed on the outer rim of disk, and the quantity of the sample cup putting hole on the concrete quantity of coding groove 1-1 and the sample cup support is identical and the position is corresponding one by one; Notch 1-2 be positioned on the radial line of one of them coding groove 1-1 of the axis hole outside and the position to the skew of axis hole direction, so that stagger with adjacent coding groove 1-1.At present, what the Vieri experiment thermostats in the laboratory adopted is 11-holes sample cup support, wherein the sample cup that is inserted with the thermometric platinum resistance is placed in No. 0 hole, No. 1 to No. 10 hole placement is equipped with the sample cup of test paper (when placing the sample cup, it is placed in the middle that requirement can see that sample cup one side of test paper lap is positioned at cylindrical side Monday and the test paper lap of sample cup support), therefore the code-wheel 1 of this preferred embodiment is provided with 11 coding groove 1-1, during installation, have the coding groove 1-1 of notch 1-2 and No. 0 hole slot on the sample cup support on the radial line and put and align.First photoelectric commutator 2 is installed on the body of Vieri experiment thermostats watch window one side, its luminotron and photoelectric conversion tube lay respectively at the upper and lower end of code-wheel 1 and radial position is corresponding with coding groove 1-1, second photoelectric commutator 3 and first photoelectric commutator 2 are separated by 180 ° and are installed on the body of Vieri experiment thermostats, and it is corresponding with notch 1-2 that its luminotron and photoelectric conversion tube lay respectively at the upper and lower end and the radial position of code-wheel 1.When the driven by motor sample cup support in the Vieri experiment thermostats forwards one of them sample cup over against the position of 3CCD colour TV camera to, the photoelectric conversion tube of first photoelectric commutator 2 receives the light that luminotron sends by coding groove 1-1, send into information acquisition and control system through being converted into high level signal, sample cup support revolution moves a week, and first photoelectric commutator 2 will produce 11 pulse signals.When No. 0 hole of sample cup support forwards to over against 3CCD colour TV camera position, the photoelectric conversion tube of second photoelectric commutator 3 receives the light that luminotron sends by notch 1-2, send into information acquisition and control system through being converted into high level signal, sample cup support revolution moves a week, and 3 of second photoelectric commutators produce a pulse signal.Be high level when Industrial Control Computer receives two paths of signals simultaneously, what just can confirm current 3CCD colour TV camera shooting is the image that has thermometric platinum resistance sample cup.When Industrial Control Computer receives only first via signal is high level, and what just confirm current 3CCD colour TV camera shooting is the image (and the image of test paper lap is positioned at the middle position of this width of cloth image) of test paper in the sample cup.
According to shown in Figure 3, light fixture contains lighting lamp power and wave filter, metal halogen bulb, snoot, collector lens, and its function is to provide stable lighting source for camera acquisition test paper image.In this preferred embodiment, lighting lamp power adopts the 5V switching power supply, and output terminal adds the π wave filter.Lighting bulb is selected the metal halogen bulb for use, and this bulb has the characteristics of high-level efficiency, high color rendering, the gentle short arc distance of high luminance relay, is applicable to the intermittent illumination of low-voltage instrument under the laboratory environment.Snoot and collector lens are converged to a branch of approximate directional light with light, and vertical irradiation is to the watch window of Vieri experiment thermostats, and this window is the double glazing that is coated with optical thin film.This bundle directional light sees through behind the watch window at top glass, sample cup cradle wall and the thermostat inwall generation multipath reflection of sample cup, forms diffused light and illuminates the bottom of sample cup, thereby avoid extraneous light to produce reflected light at test paper image position effectively.Except that this houselights, whole watch window and video camera are muffled with gobo, to eliminate the influence that outside other light is differentiated the test paper color.
According to shown in Figure 4, the 3CCD colour TV camera that this preferred embodiment is selected for use is made power supply with 12V switching power supply and π wave filter, and its key technical indexes is: CCD chip 3X1/3 ", 752X582 pixel; horizontal resolution 570 TV lines, signal to noise ratio (S/N ratio)＞54db; Its principle of work is that target image converges to colour splitting prism by lens, be separated into separately independently RGB three coloured light through colour splitting prism again, shine corresponding area array CCD respectively, this three tunnel color separations vision signal is through independently outputing to information acquisition and control system with synchronizing signal after the circuit board modulation separately.
In the present embodiment, be inserted with switching value input card, on-off output card, RGB three primary colours video frequency collection card in the Industrial Control Computer, and be built-in with and comprise that color mark database, test result data storehouse, sample cup synchronizing signal processing module, energy supply control module, image capture module, color-identifying module, display module, parameter are provided with the Flame Image Process and the color discrimination software package of module.The switching value input card can convert the high level signal of first, second photoelectric commutator output to double switch amount signal and send into sample cup synchronizing signal processing module, its the key technical indexes is: input voltage 5～24V, the maximum 60mA of input current isolates input, input impedance 1.2kQ.On-off output card has the double switch output channel, wherein: the instruction that the first switch output channel is sent according to control module, control first solid-state relay, be switched on or switched off lighting lamp power thus; The instruction that the second switch output channel is sent according to control module, control second solid-state relay, be switched on or switched off the stabilized voltage supply of 3CCD colour TV camera thus, the key technical indexes of on-off output card is: relay classification 8 SPST, contact rated voltage 24VDC, electric current 1A.RGB three primary colours video frequency collection card has three tunnel independently prime amplifier, A/D transducer and accessory circuits separately, its the key technical indexes is: 6 optional A/D ALT-CH alternate channels of software are supported the two-way rgb video signal, 1 road independent sync channel signal, RGB 8:8:8 output pixel form, the 4MB video buffer memory; Be converted to the vision signal of three 8 bit digital through RGB three primary colours video frequency collection card by three tunnel color separation vision signals of 3CCD colour TV camera output.Six the pairing redness of color class and the blue ratio that have tens kinds of sample Types of Medicine in the color mark database, these data are can and carry out statistical study to experimental result by a large amount of experimental implementation to draw, or obtain via upper level Vieri experiment measuring apparatus transmission of quantity value.
Fig. 5 shows the main flow of information acquisition and control system software program.When adopting the present invention to carry out Vieri experiment, because the Vieri experiment indicator paper colors discrimination standard of different Types of Medicine is different, so before test, keyboard that be by Industrial Control Computer is input to parameter with the Types of Medicine parameter in each sample cup on the sample mount in current batch module is set.On-test, at first start timekeeping system and on the display screen of Industrial Control Computer, show the current time.The test paper color that reaches regulation when timing is differentiated preceding 1 minute of time, first, second solid-state relay is connected the power supply of illuminating lamp and 3CCD colour TV camera respectively on the energy supply control module gauge tap amount output card, so that before images acquired, make the luminance brightness of illuminating lamp and the circuit performance of video camera inside reach steady state (SS); Meanwhile, for the current time color is differentiated ready, promptly remove the set of number image that preceding color differentiation is retained in the frame buffer zone, once differentiate the related data in the temporary color identification processing procedure of flow process before removing in the internal memory, remove preceding color data and the color mark of once differentiating test paper in each sample cup of flow process that shows in the display screen.Immediately, display module receives the digital video signal of RGB three primary colours video frequency collection card output, and intercepts this width of cloth picture centre position (192 X, 144 pixels) and show dynamic image scene by display screen.The test paper color that reaches regulation when timing is differentiated the time, and sample cup synchronizing signal processing module starts, and constantly inquires about the switching value input card whether look-at-me is arranged.In case the switching value input card is sent look-at-me here, the synchronizing signal processing module according to the electrical level discrimination of double switch amount signal this moment over against watch window be to place the sample cup (being No. 0 hole site of support) that is inserted with the thermometric platinum resistance, still some sample cups that is placed with sample and test paper.If No. 0 hole site of support, with the current sample cup variable zero clearing in the internal memory; If having only the signal of first photoelectric commutator 2 is high level, promptly a hole among No. 10 hole, support No. 1 hole～is over against watch window, and with the current sample cup variable increment in the internal memory, the vision signal in this moment is the test paper image of current sample cup number.If the test paper color is not differentiated as yet in this sample cup, just call image capture module and from the output of RGB three primary colours video frequency collection card, catch the rest image that a frame is divided into red, blue, green three width of cloth monochrome images, and intercept 192 X, 144 pixels from middle position and deposit in the frame buffer zone; Call the color identification module immediately and finish the color discrimination of test paper image.Whether then program continues inquiry switching value input card look-at-me, and the test paper color of image has all been differentiated in all sample cups.If the whole differentiations of test paper color of image finish in all sample cups, program shows (referring to Fig. 6) with three primary colours numerical value, the color mark of test paper in each sample cup of current time at display screen, also with tabular form above-mentioned test result is deposited in the test result data storehouse simultaneously.So far, program has been finished a test period, energy supply control module starts, close lighting lamp power and camera power supply by first, second solid-state relay on the on-off output card, program can begin the above-mentioned test period of circulating repeatedly from the timing step subsequently, until reaching seven hours or off-test.
Fig. 7 shows color discrimination subroutine flow chart of the present invention.Judge the current image of catching when being the test paper image when main flow, the color-identifying module starts.The rectangle frame of 64 pixels of intercepting 44 X in the red, green, blue view data that this module is at first preserved from frame buffer zone, the image of this rectangle frame is the image of test paper overlapping part; Adopt following formula that all pixels in the monochromatic rest image rectangle frame of three width of cloth are asked for its primary colours mean value respectively, that is:
In the formula,
Represent respectively to m capable * redness, green, blue average values that n row pixel is obtained, r
Ij, g
Ij, b
IjRepresent redness, green, blue valve on the capable j pixel of i respectively, and obtain the ratio of red mean value and blue average values according to following formula.
The color-identifying module is provided with the Types of Medicine parameter that module is provided with according to parameter, from the color mark cdr database, access the test paper color references data of corresponding Types of Medicine, promptly six pairing redness of color class compare with the ratio of blueness and the δ value of this module calculating, determine that this moment, the test paper color belonged to that color segment, thereby judge its color mark.
Vieri experiment uses litmus paper, when litmus paper and gunpowder sample heat in the sample cup of sealing, and the NO that decomposed sample discharges
2With the litmus paper effect, the test paper color is changed to red partially by initial inclined to one side blueness.Because other adjuvant and the ratio difference thereof that contain in the dissimilar gunpowder, the change color of test paper is incomplete same, and still, it is that person's character by litmus paper is determined that the color of litmus paper gradually becomes red partially this objective law by inclined to one side indigo plant.The test paper color three primary colours mean variation curve that Fig. 8 surveys in a Vieri experiment for a certain gunpowder sample, the number of times that horizontal ordinate is differentiated for the test paper color, each half an hour at interval, ordinate is a primary color values.As can be seen, after the three primary colours separation, the green component of litmus paper changes seldom in process of the test in 7 hours, and redness is progressively rising, and is blue on a declining curve.In this example, the test paper color becomes rose-colored (M) by bluish violet (Lz), red mean value becomes 109.02 by 91.27, change 19.45%, green mean value becomes 86.08 by 80.75, changes 6.6%, blue average values becomes 79.55 by 87.37, change-8.95%, therefore, the test paper color of feeling of human eye is changed into redness from blueness gradually.Simultaneously, the colour temperature of external light source and illumination have a significant impact the value of three primary colours, and the illumination change of light makes the brightness of whole test paper image change the corresponding lifting of tristimulus value.Through the test of different disposal method, the present invention has adopted the distinguishing rule of the ratio of red mean value and blue average values as the sign of differentiating the test paper color, can eliminate the influence of brightness of illumination to tristimulus value effectively.Simultaneously, it is big that the ratio of red mean value and blue average values changes amplitude, can more effectively differentiate the litmus paper change in color.In this example, the ratio of red mean value and blue average values becomes 1.37 by 1.045, and variable quantity reaches 31.1%.
The technical indicator that this preferred embodiment reached is:
Measuring repeatability standard deviation＜3%,
To the Measuring Time of test paper in the sample cup 0.5 second.
The measuring repeatability standard deviation is meant the statistic bias of the Standard Colors piece being carried out the ratio of red mean value that duplicate measurements obtains and blue average values.
Claims (2)
1. Vieri experiment indicator paper colors identification device, it is characterized in that: comprise and contain code-wheel [1] and two photoelectric commutators [2,3] sample cup position synchronous scrambler, the light fixture that contains illuminating lamp and lighting lamp power, the 3CCD colour TV camera, switching value input card [4] is housed, on-off output card, the Industrial Control Computer of RGB three primary colours video frequency collection card and Flame Image Process and color discrimination software package, the rotating shaft of sample cup support is connected in described code-wheel [1] and the Vieri experiment thermostats, have on it and sample cup hole number identical and a position corresponding codes groove [1-1] and a notch [1-2] on the sample cup support, described two photoelectric commutators [2,3] constitute by luminotron that is positioned at described code-wheel [1] top and the photoelectric conversion tube that is positioned at described code-wheel [1] below, when any one sample cup forwards watch window over against Vieri experiment thermostats to sample cup support, the luminotron of first photoelectric commutator [2] and photoelectric conversion tube just in time with corresponding codes groove [1-1] over against, first photoelectric commutator [2] provides high level signal to described switching value input card [4], when the sample cup bracket holes of placing the thermometric platinum resistance forwards described watch window to, the luminotron of first photoelectric commutator [2] and photoelectric conversion tube just in time with corresponding codes groove [1-1] over against, and the luminotron of second photoelectric commutator [3] and photoelectric conversion tube just in time with described notch [1-2] over against, first, second photoelectric commutator [2,3] provide high level signal to described switching value input card [4] simultaneously; Described light fixture and 3CCD colour TV camera are placed over against the watch window of Vieri experiment thermostats, lighting lamp power is connected with first solid-state relay on the described on-off output card, and camera power supply is connected with second solid-state relay on the described on-off output card; Described Flame Image Process and color discrimination software package contain color mark database, test result data storehouse, parameter module, energy supply control module, display module, sample cup synchronizing signal processing module, image capture module, color-identifying module are set: described color mark database has six pairing redness of color class and blue ratio of tens kinds of various sample Types of Medicine; Each test paper color data and identification result of gathering are constantly preserved in described test result data storehouse; Described parameter is provided with the Types of Medicine parameter that module is used for being provided with each sample sample that cup is put when testing; Described first, second solid-state relay of corresponding control is switched on or switched off lighting lamp power, camera power supply to described energy supply control module in the beginning of a test period or when finishing; Described display module is gathered the video output of described 3CCD colour TV camera by the three primary colours video frequency collection card, all the time show the on-the-spot dynamic image of test paper in the sample cup in a test period by display screen, test period finishes the color mark that the back shows test paper in each sample cup; The function of described sample cup synchronizing signal processing module is, when having the switching value signal, calls described switching value input card [4] described image capture module when inquiring, simultaneously judge according to the way of switching value signal whether current be the sample cup that test paper is housed over against described watch window, if be judged as is then to call described color-identifying module; Described image capture module is caught the rest image of cup test paper in the frame sample by RGB three primary colours video frequency collection card and it is deposited in the frame buffer zone; The function of described color-identifying module is, choose and work as the former frame rest image in the frame buffer zone and intercept the fixedly rectangular area that has test paper lap image, to this fixedly in the rectangular area all pixels ask for RGB three primary colours mean value separately, obtain the ratio of red mean value and blue average values again, the reference data of six class of corresponding test agent test paper color in this ratio and the described color mark database is made comparisons, determine the color mark of test paper in current sample cup this moment and result of determination is deposited in the described test result data storehouse with tabular form.
2. Vieri experiment indicator paper colors identification device according to claim 1 is characterized in that: on-the-spot dynamic image size 192 * 144 pixels of test paper in the described sample cup; Described fixedly rectangular area is 44 * 64 pixels.
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| CN110988016A (en) * | 2019-12-31 | 2020-04-10 | 江苏省产品质量监督检验研究院 | Automatic testing device for thermal stability of cable material and control method |
| CN111190004B (en) * | 2020-01-10 | 2023-11-10 | 上海泰辉生物科技有限公司 | Instant detection system of immunochromatography test strip |
| CN113358637B (en) * | 2021-05-11 | 2024-02-20 | 棒糖科技(杭州)股份有限公司 | Method for realizing interpretation of semi-quantitative test paper result through stable time |
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| US5642189A (en) * | 1995-06-12 | 1997-06-24 | Measurex Corporation | Color sensor simulating standard source illuminant |
| WO2002086430A2 (en) * | 2001-04-24 | 2002-10-31 | Color Quest Limited | Color comparison method and apparatus |
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| CN1811358A (en) * | 2005-01-28 | 2006-08-02 | 北京机械工业学院 | Control method for measuring colour difference |
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| US5642189A (en) * | 1995-06-12 | 1997-06-24 | Measurex Corporation | Color sensor simulating standard source illuminant |
| WO2002086430A2 (en) * | 2001-04-24 | 2002-10-31 | Color Quest Limited | Color comparison method and apparatus |
| CN1610822A (en) * | 2001-11-20 | 2005-04-27 | 奎德尔股份有限公司 | Optical measuring device for test strips |
| CN1811358A (en) * | 2005-01-28 | 2006-08-02 | 北京机械工业学院 | Control method for measuring colour difference |
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