CN103056111B - Prawns quality detecting and classifying device based on machine vision technology - Google Patents
Prawns quality detecting and classifying device based on machine vision technology Download PDFInfo
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- 239000007921 spray Substances 0.000 abstract 3
- 238000012360 testing method Methods 0.000 description 4
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Abstract
The invention discloses a prawns quality detecting and classifying device based on a machine vision technology. The prawns quality detecting and classifying device based on the machine vision technology include a laying-off system, an image acquisition system, a classifying mechanism, a conveyor belt, a computer system and a controller system. A camera is fixed at the top end of a lighting box which is fixed above the conveyor belt, and a white unsmooth coating is painted on inner walls of the lighting box. Light source is light-emitting diode (LED) soft strip type light source belts which are distributed on four inner walls of the lighting box. Light source illuminates upwards, and reflects to the surface of the prawn through the white coating of the inner walls. After processing the collected image in a real time, the computer obtains corresponding information of the quality characteristic of the prawns and classifies that, and then controls a spray valve through a controller. Passing through a corresponding spray valve, the prawns with a different quality classification are blown into a corresponding collecting groove, while the prawns not blown by the spray valve directly drop into the collecting groove arranged at the ends of the conveyor belt. The prawns quality detecting and classifying device based on the machine vision technology can detects and classifies the prawns with different quality classifications by quickly and accurately detecting the morphology and color characteristic of the prawns.
Description
Technical field
The present invention relates to a kind of grading plant that detects, especially relate to a kind of prawn quality detection and classification device based on machine vision technique.
Background technology
China is aquatic products big country of the world, and product water outlet occupies considerable status in agricultural products in China outlet and foreign export, but in the aquatic products industry of China, also has many problems at present, and product total quality is not high.Prawn, as a large main force in aquatic products, detects to its quality the outlet benefit that classification is conducive to improve prawn, has positive realistic meaning.In current productive life trade both sides mainly according to the external sort of prawn as the indexs such as size, shape, color and luster, integrality judge its grade, therefore carry out classification according to the external sort of prawn and be necessary.Automation sorting/classifying equipoment is all to design according to relevant theory of mechanics mostly in the market, mainly carries out classification by thickness, the length of prawn.Domestic a lot of scholar has done relevant research in this respect.
Sun Ping (Chinese patent 87200587) etc. has invented a kind of prawn number of elements separator, is applicable to the sorting of prawn specification.Han Junming (Chinese patent 91202265.5) etc. is contained in paired roller on pedestal, forms the slideway differing in size, thereby prawn is carried out to classification according to individual size between every pair of roller.Zhang Jiaheng (Chinese patent 03202675.7) has invented a kind of Shrimp sorting machine, by regulating two gaps between roller bearing, reaches the effect of classification.Yang Yixiang (Chinese patent 201020502942.7) etc. invent a kind of drum-type lobster classifying screen, and every layer of grid finedraw that rolls cage cylinder designs according to lobster grade scale.Peng Dequan (Chinese patent 200520054017.1) has invented a set of shrimp auto-manual digital control sorting machine, utilizes the preset computer of numerical control automatically to control adjustment roller gap, makes the specification capable of regulating of classification, is divided into from top to bottom 7 grades and dwindles successively.
Traditional mechanical type hierarchical approaches, maximum shortcoming is that detection index is single.Machine vision technique is as the advanced mainstream technology in one of current Non-Destructive Testing aspect, not only can detect many indexes such as size, shape, color and luster, integralities simultaneously, and the degree of accuracy is high, the detection and the classification aspect that are applied to prawn not only can overcome above problem, and more meet the growth requirement of current techniques.The domestic prawn classifying equipoment based on machine vision yet there are no at present.
Summary of the invention
For the deficiency of existing prawn classifying equipoment, the object of the present invention is to provide a kind of prawn quality detection and classification device based on machine vision technique, its integrated use plant equipment and computer software prawn is carried out to outward appearance detection, it has overcome the inadequate defect of single, the intelligent detection level of traditional detection index, makes testing result more accurately with reliable.
The technical solution used in the present invention is:
The present invention includes blanking system, image capturing system, classification mechanism, transport tape, the department of computer science controller system of unifying; Wherein:
1) blanking system: comprise prawn feed hopper, two vibration feed appliances, two infrared sensors, the single-row draw-in groove of individual layer, guide groove and attitude adjusters; The first vibration feed appliance (is connected with stairstepping with transport tape with the second vibration feed appliance, guide groove downwards successively, the first vibration feed appliance top is provided with prawn feed hopper, the feed end of the second vibration feed appliance is provided with the first infrared sensor, and the discharge end of the second vibration feed appliance is provided with the single-row draw-in groove of individual layer; The feed end top of transport tape is provided with attitude adjuster, and transport tape side is provided with the second infrared sensor;
2) image capturing system: comprise lighting box, camera and light source; Camera is fixed on the top of lighting box, the lighting box that inwall is coated with adularescent reflectance coating is fixed on transport tape top, and be positioned at outside the second infrared sensor, the light source of the soft stripe shape light belt of LED is arranged on four inwalls of lighting box, the lamppost of light source irradiates upward, by the reflection of inwall white coating, light is mapped to prawn surface;
3) hierarchy system: comprise that three snifting valves and four connect thing groove; One side of the transport tape in lighting box outside is respectively equipped with the first snifting valve, the second snifting valve and the 3rd snifting valve, the opposite side of the transport tape in lighting box outside is respectively equipped with first and connects thing groove, second and connect thing groove and the 3rd and connect thing groove, it is corresponding one by one that three snifting valves and three connect thing groove, and the 4th connects thing groove is positioned at transport tape discharge end;
4) department of computer science unifies Lu Yuxiang mechatronics, and another road via controller system of computer system is electrically connected with the first snifting valve, the second snifting valve and the 3rd snifting valve respectively.
Described camera is the ace series acA640-100gc area array cameras that German Basler company produces, and camera lens is that the model that Japanese Xinghe (KOWA) company produces is LM16JC camera lens.
Described light source is Shenzhen YJ-LSF1210W72 of Yi Jia Photoelectric Co., Ltd. adopting surface mounted LED soft light bar.
What its inwall of described lighting box used is general industry white high temperature film; Described transport tape is food grade white PVC belt; Described controller system is PLC.
Compared with background prior art, the beneficial effect that the present invention has is:
In the present invention, the discharging opening of prawn feed hopper is rectangle, prevents that moment blanking is too many.Vibration feed appliance has certain gradient, every grade of vibration feed appliance hunting speed promotes step by step, thereby reduce step by step the quantity of prawn, can be according to concrete blanking-quantity, the number of suitable increase vibration feed appliance, in order to prevent that in subordinate's feed appliance, prawn is piled up, starts to be provided with infrared sensor in every grade of feed appliance from the second level, to control the vibrate hunting speed of feed appliance of higher level, finally ensure to only have in afterbody vibration feed appliance the prawn of minority.On afterbody vibration feed appliance, have the single-row draw-in groove of individual layer, lower end is connected to guide groove, has more effectively ensured to fall into transport tape and has only had single prawn.Attitude adjuster is placed in transport tape surface, but does not contact with transport tape.Image process grading software can to the color of prawn, profile detect simultaneously and according to its image feature information by its classification.Classification mechanism can be divided into prawn different quality level Four, adopts the mode of air-blowing, prevents prawn to damage.This cover system combines machinery with image technique, without manual operation, not only accuracy of detection is high.The operation of classification part non-contact type, does not cause damage to prawn itself, easy to operate.If testing requirement changes, only need carry out corresponding modify to the software of image processing section, adjustable is strong.Detection index is various, the intellectuality of testing process process, and testing result more accurately and reliably.
Brief description of the drawings
Fig. 1 is system architecture schematic diagram of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the side view of Fig. 1.
In figure: 1, prawn feed hopper, 2, the first vibration feed appliance, 3, the first infrared sensor, 4, the second vibration feed appliance, 5, the single-row draw-in groove of individual layer, 6, guide groove, 7, attitude adjuster, 8, the second infrared sensor, 9, lighting box, 10, camera, 11, light source, 12, the first snifting valve, 13, the second snifting valve, 14, the 3rd snifting valve, 15, first connect thing groove, 16, second connect thing groove, 17, the 3rd connect thing groove, 18, the 4th connect thing groove, and 19, transport tape, 20, computer system, 21, controller system.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be further described.
As shown in Figure 1, Figure 2, Figure 3 shows, the present invention includes blanking system, image capturing system, classification mechanism, transport tape, the department of computer science controller system of unifying; Wherein:
1) blanking system: comprise prawn feed hopper 1, two vibration feed appliances 2,4, two infrared sensors 3,8, the single-row draw-in groove 5 of individual layer, guide groove 6 and attitude adjusters 7; The first vibration feed appliance 2 is connected with stairstepping with transport tape 19 with the second vibration feed appliance 4, guide groove 6 downwards successively, the first vibration feed appliance 2 tops are provided with prawn feed hopper 1, the discharge end that the feed end of the second vibration feed appliance 4 is provided with the first infrared sensor 3, the second vibration feed appliances 4 is provided with the single-row draw-in groove 5 of individual layer; The feed end top of transport tape 19 is provided with attitude adjuster 7, and transport tape 19 sides are provided with the second infrared sensor 3;
2) image capturing system: comprise lighting box 9, camera 10 and light source 11; Camera 10 is fixed on the top of lighting box 9, the lighting box 9 that inwall is coated with adularescent reflectance coating is fixed on transport tape top, and be positioned at the second infrared sensor 8 outsides, the light source 11 of the soft stripe shape light belt of LED is arranged on 9 four inwalls of lighting box, the lamppost of light source 11 irradiates upward, by the reflection of inwall white coating, light is mapped to prawn surface;
3) hierarchy system: comprise that three snifting valves 12,13,14 and four connect thing groove 15,16,17,18; One side of the transport tape 19 in lighting box 9 outsides is respectively equipped with the first snifting valve 12, the second snifting valve 13 and the 3rd snifting valve 14, the opposite side of the transport tape 19 in lighting box 9 outsides is respectively equipped with first and connects thing groove 15, second and connect thing groove 16 and the 3rd and connect thing groove 17, it is corresponding one by one that three snifting valves and three connect thing groove, and the 4th connects thing groove 18 is positioned at transport tape 19 discharge ends;
4) computer system 20Yi road is electrically connected with camera 10, and computer system 20 another road via controller systems 21 are electrically connected with the first snifting valve 12, the second snifting valve 13 and the 3rd snifting valve 14 respectively.
The ace series acA640-100gc area array cameras that the camera using in embodiment is produced for German Basler company.Camera lens is that the model that Japanese Xinghe (KOWA) company produces is LM16JC camera lens.Light source is Shenzhen YJ-LSF1210W72 of Yi Jia Photoelectric Co., Ltd. adopting surface mounted LED soft light bar.What lighting box inwall used is general industry white high temperature film.Transport tape is food grade white PVC belt.Controller system is PLC.
Prawn in batches enters into the first vibration feed appliance 2 from prawn feed hopper 1; Due to equipment vibration, prawn drops down onto the second vibration feed appliance 4, the second vibration feed appliances 4 from the first vibration feed appliance 2 and accelerates vibration compared with the first vibration feed appliance, and prawn drops down onto guide groove 6 from the second vibration feed appliance 4 through the single-row draw-in groove 5 of individual layer.The single-row draw-in groove 5 of individual layer utilizes the method for restricted passage height, guarantees by the prawn of a shrimp height, to utilize the method for the width that restricts export simultaneously, makes to only have a prawn can pass through its outlet; Two vibration feed appliances all have the inclination of certain angle; The side of the second vibration feed appliance 4 is provided with the first infrared sensor 3, its hunting speed of vibrating feed appliance 2 according to the prawn quantity control first on current feed appliance regulates the blanking velocity of higher level's feed appliance, the charging rate that prevents current feed appliance is too fast, causes prawn in subordinate's feed appliance to be piled up.When the prawn quantity of 4 li of the second vibration feed appliances too many, shrimp body occurs when stacking, will trigger the first infrared sensor 3, make it send the vibrate motor of feed appliance 2 of signal controlling first, make the temporary transient failure of oscillations of the first vibration feed appliance 2, until prawn quantity reduces, after stacks as high reduces, first sensor 3 can rework the first vibration feed appliance 2 by control engine again.Because two vibration feed appliances 2,4 accelerate vibration, and the single-row draw-in groove 5 of individual layer, greatly reduce in the prawn quantity of the second vibration feed appliance 4 ends.Vibration feed appliance quantity can increase according to actual blanking-quantity, and optimum state is that the end of afterbody oscillator only has a prawn.For the situation that prevents non-single prawn occurs, be connected on the second vibration feed appliance 4 below be a guide groove 6 that can only have a prawn to pass through.By guide groove 6, only have single prawn to enter on transport tape 19.Attitude adjuster 7 adjustable-angles, utilize shrimp body and its collision friction, and shrimp body is adjusted the stance adjustment of prawn is basically identical to cephlad-caudal and transport tape 19 traffic directions.
Prawn sends signal to camera 10 through the second infrared sensor 8, and in the time that prawn reaches camera 10 below, camera 10 is just captured the image of prawn.By image transmitting to computer system 20, process in real time by the inner image processing software arranging of computer system 20, obtain corresponding prawn qualitative characteristics information and judge the affiliated rank of current prawn, computer system 20 again by communication to controller system 21, and then control in three snifting valves 12,13,14, in the time that prawn arrives this snifting valve front, this snifting valve is blown into prawn to connect accordingly in thing groove 15 with regard to jet,, 16,17, the prawn that is not subject to air-blowing is directly fallen into connecing in thing groove 18 of transport tape end.Altogether prawn can be divided into level Four.
Claims (4)
1. the prawn quality detection and classification device based on machine vision technique, comprises blanking system, image capturing system, classification mechanism, transport tape, the department of computer science controller system of unifying;
Image capturing system: comprise lighting box (9), camera (10) and light source (11); Camera (10) is fixed on the top of lighting box (9), the lighting box (9) that inwall is coated with adularescent reflectance coating is fixed on transport tape top, and be positioned at outside the second infrared sensor (8), the light source (11) of the soft stripe shape light belt of LED is arranged on (9) four inwalls of lighting box, the lamppost of light source (11) irradiates upward, by the reflection of inwall white coating, light is mapped to prawn surface;
Hierarchy system: comprise that three snifting valves (12,13,14) and four connect thing groove (15,16,17,18); One side of the transport tape (19) in lighting box (9) outside is respectively equipped with the first snifting valve (12), the second snifting valve (13) and the 3rd snifting valve (14), the opposite side of the transport tape (19) in lighting box (9) outside is respectively equipped with first and connects thing groove (15), second and connect thing groove (16) and the 3rd and connect thing groove (17), it is corresponding one by one that three snifting valves and three connect thing groove, and the 4th connects thing groove (18) is positioned at transport tape (19) discharge end;
Computer system (20) one tunnels are electrically connected with camera (10), and another road via controller system (21) of computer system (20) is electrically connected with the first snifting valve (12), the second snifting valve (13) and the 3rd snifting valve (14) respectively;
It is characterized in that:
Blanking system: comprise prawn feed hopper (1), two vibration feed appliances (2,4), two infrared sensors (3,8), the single-row draw-in groove of individual layer (5), guide groove (6) and attitude adjuster (7); The first vibration feed appliance (2) is connected with stairstepping with transport tape (19) with the second vibration feed appliance (4), guide groove (6) downwards successively, the first vibration feed appliance (2) top is provided with prawn feed hopper (1), the feed end of the second vibration feed appliance (4) is provided with the first infrared sensor (3), and the discharge end of the second vibration feed appliance (4) is provided with the single-row draw-in groove of individual layer (5); The feed end top of transport tape (19) is provided with attitude adjuster (7), and transport tape (19) side is provided with the second infrared sensor (8).
2. a kind of prawn quality detection and classification device based on machine vision technique according to claim 1, it is characterized in that: the ace series acA640-100gc area array cameras that described camera (10) is produced for German Basler company, camera lens is that the model that Japanese Xinghe KOWA company produces is LM16JC camera lens.
3. a kind of prawn quality detection and classification device based on machine vision technique according to claim 1, is characterized in that: described light source (11) is Shenzhen YJ-LSF1210W72 of Yi Jia Photoelectric Co., Ltd. adopting surface mounted LED soft light bar.
4. a kind of prawn quality detection and classification device based on machine vision technique according to claim 1, is characterized in that: what its inwall of described lighting box (9) used is general industry white high temperature film; Described transport tape (19) is food grade white PVC belt, and controller system (21) is PLC.
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