CN106441121A - Three-basic-color based photoelectric pig carcass backfat detector - Google Patents
Three-basic-color based photoelectric pig carcass backfat detector Download PDFInfo
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- CN106441121A CN106441121A CN201610827972.7A CN201610827972A CN106441121A CN 106441121 A CN106441121 A CN 106441121A CN 201610827972 A CN201610827972 A CN 201610827972A CN 106441121 A CN106441121 A CN 106441121A
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- meat
- gray code
- blade
- fat
- hog
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
Abstract
The invention relates to a three-basic-color based photoelectric pig carcass backfat detector which comprises a three-basic-color sensor, an LED light source, a Gray code range finder, a synchronous data acquisition device and a single-chip microcomputer. The LED light source illuminates the cross section of the meat fat in the process that a blade is inserted into the pig carcass backfat. The three-basic-color sensor acquires the wavelength spectrum reflected from the cross section of the meat fat. The gray code ranger finder is used to obtain the moving distance information of the blade when the blade enters the pig carcass backfat. The synchronous data acquisition device is used to synchronously acquire the wavelength spectrum acquired by the three-basic-color sensor and the distance information obtained from the gray code ranger finder and converts them into a synchronous digital signal. The single-chip microcomputer is used to determine the synchronous digital signal according to the parameter indexes to obtain the comprehensive chromaticity scope corresponding to the variation scope of the wavelength spectrum and the corresponding meat areas and to obtain the distance information corresponding to the chromaticity scope so that the thicknesses of different meat can be obtained and that thicknesses of the meat fat can be obtained accurately. Therefore, red meat and white meat can be more accurately separated, raising the assessment level for pig carcass.
Description
Technical field
The present invention relates to detector technical field, more particularly to a kind of based on tricolor photoelectric hog on hook back fat detector.
Background technology
China is the cultivation big country of live pig and butchers big country, but the intensive level of the entirety of Chinese pig-breeding is also relatively
Low, the carcass grading technology under corresponding diversification aquiculture status and standard also fall behind very much, rely on substantially at present artificial according to
Ask the instruments such as simple ruler to carry out the evaluation of perception to trunk, exist that efficiency is low, accuracy is not high, does not support detection process
The problems such as backtracking.Manufacturing enterprise, raiser, consumer are intended to quickly to accurately measure and evaluate hog on hook grade, assessment
The value of hog on hook raw material, determines machine direction, enterprise economic benefit after judging and instruct raw material.
Domestic enterprise has three using fat thickness assay method at present：
1st, artificial steel ruler measurement
Artificial steel ruler measurement is to measure back-fat thickness with steel ruler on a production line using artificial, reads data and records fat thickness etc.
Then grade typing computer is classified by level, and this method wastes time and energy, and data cannot be reviewed.Due to artificial measurement number
According to there is very big personal error, different personnel have different execution standards, the loss for easily causing economically to both parties, draw
Play unnecessary dispute.
2nd, image fat thickness measurement method
Image-type fat thickness is determined has lossless quick measurement, but image-type measurement is built upon each pixel and represents
In the theoretical basiss that one full-length and plain boiled pork are fixed with red meat point of interface binaryzation threshold values, the two basic settings are not
It is suitable for butchering the needs of large-scale production.
Due to optical imaging concept, physical length that each pixel is represented be by photoreceptorss（COMS）With subject
The distance between（Focal length）With the decision of camera lens multiple, in actual production process, belt type splitting saw and disc type splitting saw are not
Can guarantee that the splitting surface of each all keeps 90 degree of angles, the pig thoracic vertebra that particularly commonly uses at home projects corresponding back fat position
End in half operation is split, splits inclined situation in splitting surface formation even more common.When there is splitting inclined situation, due to focal length
Change, it will cause the serious distortion of fat thickness data.
While during the detection of image-type fat thickness, it is necessary to which captured figure is white to distinguish through binary conversion treatment
Meat and red meat, but due in actual production process, due to the environment for cultivating, the kind of live pig, production scene real-time lighting bar
Part etc. changes, though it is very big to be all red meat actual pixel three primary colours parameter differences during camera imaging,（As Pietrain, PIC pig kind
Overall red meat colourity is relatively low）Using identical threshold values binary conversion treatment, red meat can be caused with plain boiled pork separation determination deviation, Jin Erzao
Amount fat is become to be forbidden.
3rd, average probe formula measurement
Average probe formula is measured, and is mainly measured by the way of reflection to red light and adjustable resistance range finding, with certain standard
True property, but as Pietrain in part kind, the pig such as PIC kind or when detecting to PSE live pig, as red meat is connect with plain boiled pork color
Near and form error, while adjustable resistance range finding is due to too little in small distance resistance variations and also need to be converted into electricity in measurement
Stream or voltage signal can just be processed, and have low precision, the low problem of frequency acquisition.Accuracy is not suitable for production to be made on a large scale
With.
Therefore, in prior art when fat thickness is determined, there is the not high technical problem of certainty of measurement, so as to hog on hook etc.
The evaluation of level is inaccurate.
Content of the invention
The embodiment of the present invention is a kind of based on tricolor photoelectric hog on hook back fat detector by providing, and solves prior art
In determine fat thickness when, there is the not high technical problem of certainty of measurement.
In order to solve above-mentioned technical problem, embodiments provide a kind of based on the tricolor photoelectric hog on hook back fat back of the body
Fat detector, including three primary colours sensor, LED light source, Gray code diastimeter, synchronous data collection device, single-chip microcomputer,；
LED light source irradiates meat fat section with blade during being inserted in hog on hook back fat；
Three primary colours sensor is used for gathering the wave spectrum of meat fat section reflection；
When Gray code diastimeter is used for entering in hog on hook back fat with blade, the range information of blade movement is obtained；
Synchronous data collection device be used for the wave spectrum of synchronous acquisition three primary colours sensor acquisition and Gray code diastimeter away from
From information and change into synchronous digital signal；
Single-chip microcomputer is used for being judged synchronous digital signal according to parameter index, the excursion for obtaining wave spectrum to be corresponding
Comprehensive chromaticity range, corresponding difference meat region, range information corresponding with comprehensive chromaticity range is obtained, so as to obtain different meat
The thickness of matter.
Further, the three primary colours sensor includes R, G, B tri- by optical detecting unit, anti-to meat fat section light respectively
Penetrating tri- light echo specific wavelength value of R, G, B carries out detection by quantitative.
Further, the Gray code diastimeter specifically includes measurement bar, push rod, Gray code encoder, drive, transmission
Wheel is connected by concentric shafts with Gray code encoder, and push rod end connects driver blade, and driver blade one end is fixed on drive, is surveyed
Gauge rod front end arranges blade, and push rod is be arranged in parallel with measurement bar, and drive is located at below push rod, is retreated in push rod relative measurement bar
When, the driver blade of push rod end pulls drive rotation, under the drive of concentric shafts, Gray code encoder recording distance information.
Further, synchronous data collection device is specifically included：
High-precise synchronization clock, the wave spectrum for synchronous acquisition three primary colours sensor acquisition and the range finding of Gray code diastimeter
Information；
High-speed data acquisition integrated circuit, for being converted into synchronous digital signal by the wave spectrum and ranging information.
Further, the single-chip microcomputer is used for being judged synchronous digital signal according to parameter index, is detecting ripple
When the excursion of long spectrum changes in the preset range, determine that the blade is located at the meat area of same comprehensive chromaticity range
Domain, if detect the variable quantity of wave spectrum more than variable quantity is preset, determines meat of the blade by previous comprehensive chromaticity range
Region enters the meat region of next comprehensive chromaticity range, and while calculates the meat area of previous comprehensive colourity according to range information
The thickness in domain and start to calculate the thickness in the meat region of next comprehensive colourity, so as to obtain the thickness of different meats.
Using one or more technical scheme in the present invention, have the advantages that：
1st, due at this based on being joined using three primary colours sensor and Gray code diastimeter in trichroism photoelectricity hog on hook back fat detector
The mode of detection is closed, meat fat thickness degree can be accurately obtained, accurately distinguishes red meat and plain boiled pork, Accurate Assessment hog on hook grade.
2nd, due to being based on using synchronous data collection device in the main trunk back fat detector of three coloured light at this, 1024 are reached
Position/the picking rate of 0.1 second, is tested by universal measurement distance 120mm, and precision can reach 0.1mm, and detection time was reached within 1 second
Requirement to industrialized production.
Description of the drawings
Fig. 1 is the module diagram in the embodiment of the present invention based on tricolor photoelectric hog on hook back fat detector.
Specific embodiment
The embodiment of the present invention is a kind of based on tricolor photoelectric hog on hook back fat detector by providing, and solves prior art
In determine fat thickness when, there is the not high technical problem of certainty of measurement.
In order to solve above-mentioned technical problem, below in conjunction with Figure of description and specific embodiment to the present invention's
Technical scheme is described in detail.
Embodiments provide a kind of based on tricolor photoelectric hog on hook back fat detector, as shown in figure 1, including three
Primary colours sensor 10, LED light source 20, Gray code diastimeter 30, synchronous data collection device 40, single-chip microcomputer 50.
The LED light source 20 is used for irradiating meat fat section, such three base with blade during being inserted in hog on hook back fat
Colour sensor 10 can collect the wave spectrum of meat fat section reflection, as on meat fat section, different meats has different face
Color, such as, it is white that lean meat is red, fat meat, and meat skin is pink colour, then, when LED light source is irradiated to the meat fat section, no
It is different with the wave spectrum of meat reflection.The three primary colours sensor 10 includes R, G, B tri- by optical detecting unit, difference
Detection by quantitative is carried out to meat fat section light reflection tri- light echo specific wavelength value of R, G, B.Detected by three primary colours wave spectrum
More accurate.
Meanwhile, the range information of blade movement when Gray code diastimeter is entered in hog on hook back fat, is obtained with blade, specifically
Ground, the Gray code diastimeter enters the distance of incarnation fat, changes into the counting of Gray code encoder according to blade, so as to obtain meat fat
Thickness.
Specifically, the Gray code diastimeter 30 includes measurement bar, push rod, Gray code encoder, drive, drive and lattice
Thunder code coder is connected by signal axis, and push rod end connects driver blade, and driver blade one end is fixed on drive, before measurement bar
End arranges blade, and push rod is be arranged in parallel with measurement bar, and drive is located at below push rod, when push rod relative measurement bar is retreated, is pushed away
The driver blade of bar end pulls drive rotation, and under the drive of concentric shafts, Gray code encoder recording distance information is so as to survey
Obtain meat fat thickness degree.
The synchronous data collection device 40 is capable of the wave spectrum of the collection of synchronous acquisition three primary colours sensor 10 and Gray code
The range information of the blade movement that diastimeter 30 is obtained simultaneously changes into synchronous digital signal, is then passed to single-chip microcomputer 40, specifically
, the synchronous data collection device 40 specifically includes high-precise synchronization clock 401 and high-speed data acquisition integrated circuit 401, its
In, the high-precise synchronization clock 401 is used for the wave spectrum of the collection of synchronous acquisition three primary colours sensor 10 and Gray code diastimeter
The range information of 30 acquisition, the high-speed data acquisition integrated circuit, for being converted into synchronization by wave spectrum and ranging information
Digital signal, is easy to single-chip microcomputer 50 to process.
The single-chip microcomputer 50 is used for being judged synchronous digital signal according to parameter index, specifically according to wave spectrum pair
The color reflective situation that answers, obtains the corresponding comprehensive chromaticity range of excursion of the wave spectrum, that is to say, that due to animal
The color of the problem of kind, lean meat or fat meat may have multiple aberration scopes, exist in the excursion for checking wave spectrum
In preset range during change, determine that the blade is located at the meat region of same comprehensive chromaticity range, such as, the reflectance spectrum of meat skin
Scope changes in the range of 1500nm or so, and the reflected spectral range of plain boiled pork changes in the range of 3000nm or so, red meat
Reflected spectral range change in the range of 200nm or so.Therefore, when detecting scope of the wave spectrum in 1500nm or so
When, determine that the comprehensive chromaticity range, for pink colour, is defined as meat skin, when scope of the wave spectrum in 3000nm or so is detected,
Determining, the comprehensive chromaticity range, for white, is defined as fat meat, when wave spectrum being detected in 200nm or so, determines the synthesis
Chromaticity range is redness, is defined as lean meat.
After the comprehensive chromaticity range for obtaining different meats, whether the variable quantity of Detection wavelength spectrum is more than default change
Amount, such as, when wavelength directly rises to 3000nm by 1500nm, the variable quantity of the wave spectrum is greater than presetting variable quantity, now,
Determine that blade is entered the meat region of next comprehensive chromaticity range by the meat region of previous comprehensive chromaticity range, that is, by meat
Skin enters plain boiled pork, now, calculates the thickness in the meat region of previous comprehensive chromaticity range according to range information and starts to calculate
The thickness in the meat region of next comprehensive chromaticity range, i.e., enter fat meat by skin and flesh, then, calculate the thickness of skin and flesh and start meter
Calculate the thickness of fat meat.It is, of course, also possible to the thickness of lean meat is obtained, so as to obtain the thickness of different meats.
Above-mentioned due to adopt synchronous data collection device gathered data, reach the picking rate of 1024/0.1 second, by general
All over the test of measurement distance 120mm, precision can reach 0.1mm, and detection time reached the requirement of industrialized production within 1 second.
And, the Gray code diastimeter of employing, recognize along lower edge 3-4 micron nominal optical distance using on Gray code, solution
Certainly image-type, resistance-type scheme are difficult to the problem of criterion and quantity apart from standard brick.
Using the three primary colours sensor acquisition meat skin, plain boiled pork, red meat, color in red, green, blue three is reflexed to, measurement process root
According to three primary colours reflected value curve, red plain boiled pork critical point is judged by the interaction of three value reflectivity curves, has effectively distinguished meat.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to include excellent
Select embodiment and fall into being had altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (5)
1. a kind of be based on tricolor photoelectric hog on hook back fat detector, it is characterised in that including three primary colours sensor, LED light source,
Gray code diastimeter, synchronous data collection device, single-chip microcomputer；
LED light source irradiates meat fat section with blade during being inserted in hog on hook back fat；
Three primary colours sensor is used for gathering the wave spectrum of meat fat section reflection；
When Gray code diastimeter is used for entering in hog on hook back fat with blade, the range information of blade movement is obtained；
Synchronous data collection device be used for the wave spectrum of synchronous acquisition three primary colours sensor acquisition and Gray code diastimeter away from
From information and change into synchronous digital signal；
Single-chip microcomputer is used for being judged synchronous digital signal according to parameter index, the excursion for obtaining wave spectrum to be corresponding
Comprehensive chromaticity range, corresponding difference meat region, range information corresponding with comprehensive chromaticity range is obtained, so as to obtain different meat
The thickness of matter.
2. according to claim 1 based on tricolor photoelectric hog on hook back fat detector, it is characterised in that the three primary colours
Sensor includes that R, G, B tri-, by optical detecting unit, enters to meat fat section light reflection tri- light echo specific wavelength value of R, G, B respectively
Row detection by quantitative.
3. according to claim 1 based on tricolor photoelectric hog on hook back fat detector, it is characterised in that the Gray code
Diastimeter specifically includes measurement bar, push rod, Gray code encoder, drive, and drive passes through concentric shafts with Gray code encoder
Connection, push rod end connects driver blade, and driver blade one end is fixed on drive, and measurement bar front end arranges blade, push rod and survey
Gauge rod be arranged in parallel, and drive is located at below push rod, when push rod relative measurement bar is retreated, and the driver blade of push rod end is pulled and passed
Wheel rotation, under the drive of concentric shafts, Gray code encoder recording distance information.
4. according to claim 1 based on tricolor photoelectric hog on hook back fat detector, it is characterised in that synchrodata is adopted
Acquisition means are specifically included：
High-precise synchronization clock, the wave spectrum for synchronous acquisition three primary colours sensor acquisition and the acquisition of Gray code diastimeter
Range information；
High-speed data acquisition integrated circuit, for being converted into synchronous digital signal by the wave spectrum and ranging information.
5. according to claim 1 based on tricolor photoelectric hog on hook back fat detector, it is characterised in that the single-chip microcomputer
For being judged synchronous digital signal according to parameter index, the excursion of wave spectrum is being detected in preset range
During change, determine that the blade is located at the meat region of same comprehensive chromaticity range, if the variable quantity for detecting wave spectrum is big
When default variable quantity, determine that blade is entered the meat of next comprehensive chromaticity range by the meat region of previous comprehensive chromaticity range
Region, and while calculated according to range information the thickness in the meat region of previous comprehensive chromaticity range and starting calculate next comprehensive
The thickness in the meat region of chromaticity range is closed, so as to obtain the thickness of different meats.
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| CN201610827972.7A CN106441121A (en) | 2016-09-18 | 2016-09-18 | Three-basic-color based photoelectric pig carcass backfat detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108208623A (en) * | 2018-03-13 | 2018-06-29 | 重庆市长寿区田哥食品有限公司 | Spiced beef injects salting apparatus |
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| CN1040436A (en) * | 1989-09-15 | 1990-03-14 | 王光辉 | Fatness measuring instrument of live pigs |
| CN2169841Y (en) * | 1993-09-30 | 1994-06-22 | 南京航空航天大学 | Measurer for pork fat and lean degree |
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