CN112986275A - Germ rice germ integrity on-line measuring system - Google Patents
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- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 174
- 235000009566 rice Nutrition 0.000 title claims abstract description 174
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- 241000209094 Oryza Species 0.000 claims abstract description 173
- 238000012545 processing Methods 0.000 claims abstract description 52
- 238000001514 detection method Methods 0.000 claims abstract description 42
- 235000013339 cereals Nutrition 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 238000004891 communication Methods 0.000 claims abstract description 4
- 210000001161 mammalian embryo Anatomy 0.000 claims description 33
- 238000005096 rolling process Methods 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 4
- 239000013589 supplement Substances 0.000 claims description 4
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- 238000013527 convolutional neural network Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000011868 grain product Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention provides an on-line germ rice germ integrity detection system which comprises a germ rice transportation execution mechanism, a germ rice processing controller, an image acquisition device and an industrial control computer, wherein the industrial control computer sends an instruction to the germ rice processing controller in a data communication mode, the germ rice processing controller controls the germ rice transportation execution mechanism to transport germ rice grains to an object stage, an industrial camera of the image acquisition device transmits the image to the industrial control computer for processing after acquiring the image, the instruction is sent again to the germ rice processing controller to control the execution mechanism to recycle the rice grains, and germ rice integrity detection software is arranged in the industrial control computer. The method can automatically update the germ rice detection sample without human intervention, complete the cyclic and reciprocating germ rice image acquisition and realize detection.
Description
Technical Field
The invention relates to an on-line detection system for the germ integrity of germ rice, and belongs to the field of mechanical structures.
Background
At present, the problem of excessive processing of germ rice exists in China, a grain processing mode with high rice loss and low rice yield is adopted for pursuing processing precision, the aim of improving the nutritional value and the sanitary quality of grains is not taken, the appearance and the taste of a grain product are simply improved by using a multi-procedure processing method, and the processing behavior of nutrition and health is not considered. Therefore, the national standard of 2019 provides proper processing, and the corresponding indexes are reached in the processing process according to the requirements of germ retention degree, bark retention degree and whiteness. At present, in the process of processing and producing the germ rice, the detection of the processing of the germ rice is still observed by human eyes and is influenced by factors such as fatigue, subjective consciousness decision and the like, so that the problems of non-uniform quality standard, poor stability, poor instantaneity and the like of the germ rice occur. In order to solve the problems, the machine vision technology is adopted to detect and analyze the processing of the milled rice with embryo, the moderate processing quality of the milled rice with embryo can be judged quickly and accurately, and compared with the traditional human eye observation and detection, the machine vision technology has the advantages of strong objectivity, stable work, reliable result, rapid detection, long-time work and the like, and the defects of manual detection are fully overcome. Therefore, the machine vision technology is of great significance in the online detection of the moderate processing production of the germ rice. Under the research background, the project aims to research the method for detecting the germ degree of the rice properly processed on line, and designs a set of germ rice integrity on-line detection system which can be applied to processing production. The automation degree of the proper processing of the germ rice is improved, the production quality of the proper processing of the germ rice is improved, and meanwhile, an effective method reference is provided for detecting the germ integrity of the germ rice.
Disclosure of Invention
The invention aims to provide an on-line detection system for the germ integrity of germinated rice.
The purpose of the invention is realized as follows: including embryo rice transportation actuating mechanism, embryo rice processing controller, image acquisition device, industrial control computer sends the instruction through data communication mode and gives embryo rice processing controller, embryo rice processing controller control embryo rice transportation actuating mechanism transports the objective table with embryo rice grain, gather the image at image acquisition device's industrial camera and transmit the image for industrial control computer and handle, send the instruction again and give embryo rice processing controller control actuating mechanism and carry out recovery processing to the rice, there is embryo rice completeness detection software in the industrial control computer.
The invention also includes such structural features:
1. the germ rice transportation actuating mechanism comprises two stepping motors arranged on the lower side of the case, two contact switches, a rolling brush and a fan-shaped tray which are respectively provided with two motor output ends, and a strip-shaped seam arranged on the wall of the case, wherein the two contact switches are respectively arranged below the two stepping motors, and the fan-shaped tray can extend out of the strip-shaped seam under the driving of the stepping motors; the image acquisition device comprises a camera arranged in a case above the fan-shaped tray and a light supplement lamp arranged on the camera.
2. When the germ rice is treated by the upper-layer equipment and then is transported, the fan-shaped tray is positioned outside the box body and is in a rice grain collection link; during the rice grain collection time, the germ rice can form a stack on the tray along with the time, and a shape similar to a cone is formed; when the rice grain collecting time is over, the second stepping motor is driven to rotate by a control program sent by the industrial control computer to drive the fan-shaped tray to rotate, and when the fan-shaped tray passes through the strip-shaped seam, only one layer of germ rice is left due to the limitation of the height of the strip-shaped seam, and the germ rice is randomly distributed on the tray; when the fan-shaped tray touches the second contact switch, the second stepping motor stops rotating, and the fan-shaped tray is just under the camera; entering an image acquisition link; after the camera shoots, the stepping motor II starts to rotate again and stops when touching the contact switch again; the stepping motor starts to rotate to drive the rolling brush to rotate, and meanwhile, the tray horizontally swings around the shaft to the direction of the rolling brush to clean the germ rice on the fan-shaped tray; after cleaning, the fan-shaped tray continues to rotate to the outside of the box body, and the next round of rice grain collection link is started.
Compared with the prior art, the invention has the beneficial effects that: the method can automatically update the germ rice detection sample without human intervention, and complete the cyclic and reciprocating germ rice image acquisition. Germ rice germ integrity on-line measuring platform installs the rice outlet position at germ rice processing equipment, and in the germ rice course of working, germ rice transportation actuating mechanism leads to rotatory fan-shaped year thing dish to rice outlet for the sample can fall into and carry the thing dish, and the rotation enters into testing platform through detecting the feed inlet, and the quantity of carrying the thing dish and mainly accomplishing at rice outlet dwell time through controlling. After the plumule rice landing to carrying the thing dish, rotatory carrying thing dish rotates under the camera, carries thing dish vibrator and can start for the plumule rice is carrying the thing dish and is fully spread the expansion through vibrations from top to bottom, avoids the direct landing of plumule rice to get off and forms the condition of piling up, because if piling up each other between the grain of rice, the plumule rice image of formation will appear that top layer grain of rice directly covers on the grain of lower floor, is unfavorable for the processing that the image was cut apart. Then, the camera will carry out image acquisition to shaking the completion plumule rice that tiles, will gather the image input and handle to the computer. Finally, the germ rice still stops on carrying the thing dish, and the system still need gather newly-processed germ rice image, just at this moment just need execute the cleaning device in the structure and clear up the germ rice that gathers completion on the objective table through the control rolling brush, and the germ rice then can fall into the germ rice collection box from the fretwork bottom surface of platform. When the clearance carries the thing dish, cleaning device also can clean the camera lens, because grind in the air and leave the bran powder and can adhere to the camera lens gradually on, directly influenced the quality of gathering the image, so also need clear up the camera lens when the clearance carries the thing dish. The collection of the embryo rice sample image is completed once after the cleaning is completed, and the next embryo rice collection only needs to be completed by repeating the operations. Therefore, the functions of on-line sampling of the germ rice, germ rice transportation, germ rice image acquisition, germ rice recovery and the like are realized through the germ rice germ integrity on-line detection platform. .
Drawings
FIG. 1 is a general structure diagram of an on-line detecting system for the integrity of germ and rice germ of the invention;
FIG. 2 is a view showing the structure of the inner case of the present invention;
FIG. 3 is a view showing the structure of the outer case of the present invention;
FIG. 4 is a flow chart of a filtering process of the milled rice detection software according to the present invention;
FIG. 5 is a block diagram of an image segmentation process;
fig. 6 is a block diagram of an appearance quality recognition process.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The invention aims to provide a novel full-automatic detection mechanism for the integrity of germ and rice germ. With reference to fig. 1, the germ and rice germ integrity detection mechanism mainly comprises: fan 1, industrial computer 2, camera 3, light filling lamp 4, fan-shaped tray 5, rolling brush 6, step motor 7, contact switch 8, contact switch two 9, step motor two 10, strip seam 11. The industrial personal computer 2 is positioned on the upper side inside the case. The rest parts are positioned at the lower side of the interior of the case. Wherein the camera 3 and the light filling lamp 4 of detection part link to each other with the base, fix in quick-witted case downside. Fan-shaped tray 5 is located camera 3 below, and strip parallel gap 11 is in the coplanar with camera 3, and strip seam 11 width is slightly greater than fan-shaped tray 5 thickness. A second stepping motor 10 and a second contact switch 9 are sequentially arranged below the fan-shaped tray 5. The rolling brush 6 is positioned on the right side of the fan-shaped tray 5, and a first stepping motor 7 and a contact switch 18 are sequentially arranged below the rolling brush 6. A first stepping motor 7 is arranged below the rolling brush 6, and a first contact switch 8 is arranged below the first stepping motor 7; the other second stepping motor 10 is arranged below the fan-shaped tray 5, and a second contact switch 9 is also arranged below the second stepping motor 10; the strip line slot 11 is located above the sector tray 5. The image detection part comprises a camera 3 arranged on a fan-shaped tray 5 at the lower side of the case and a light supplement lamp 4 arranged on the camera 3; the industrial personal computer 2 is arranged on the upper side of the case, and one side of the industrial personal computer 2 is provided with a fan 1; and a display screen 12 mounted on the case body surface side.
The on-line detection platform for the integrity of the germ and the rice germ is the basis of the whole detection system, and a hardware structure platform of the on-line detection platform comprises an image acquisition device and an execution mechanism. The image acquisition device mainly comprises a camera, a light supplement lamp and a carrying disc, and the work task is image acquisition. The execution mechanism mainly comprises a transportation execution mechanism and a cleaning execution mechanism, and the work task is to control the whole transportation process of the germ rice.
This plumule rice germ completeness detects actuating mechanism because light filling lamp 4 is the cyclic annular light filling lamp 4 of cover 3 on the camera, can not cause the reflection of light.
The germ rice germ integrity detection actuating mechanism can realize full-automatic germ rice germ integrity detection. The rice with germ in the collected image is not stacked, so that the image processing becomes easy.
The operating process of the germ and rice germ integrity detection executing mechanism is as follows: when the germ rice is transported after being processed by the upper-layer equipment, the fan-shaped tray 5 is positioned outside the box body and is in the rice grain collection link. During the time of rice grain collection, the germ rice will form a stack on the tray, forming a shape similar to a cone, as time goes on. After the time for collecting rice grains is over, the second stepping motor 10 is rotated by the control program sent by the industrial personal computer 2 to drive the tray 5 to rotate. When the tray 5 passes through the strip-shaped slits 11, the germ rice is left with only one layer because of the height limitation of the strip-shaped slits 11, and is randomly distributed on the tray. When the tray 5 touches the second contact switch 9, the stepping motor 10 stops rotating, and the tray 5 is just below the camera 3. Then, the image acquisition process is started. After the camera 3 shoots, the second stepping motor 10 starts to rotate again and stops when touching the first contact switch 8 again. At this time, the first stepping motor 7 positioned below the rolling brush 6 starts to rotate to drive the rolling brush 6 to rotate, and meanwhile, the tray horizontally swings towards the direction of the rolling brush 6 around the shaft, so that the germ rice on the fan-shaped tray 5 is cleaned. After cleaning, the fan-shaped tray 5 continues to rotate to the outside of the box body, and the next round of rice grain collection link is started. The operation is repeated in a circulating way. The main power switch 15, the belt start switch 16, the vents 14, 13 and the display 12 are arranged on the chassis shell.
The working process of the germ rice integrity detection software is as follows: and obtaining a germ rice image after the camera 3 shoots and transmitting the germ rice image to a detection system. Then, the image is filtered and divided into three parts: the first step is Gaussian filtering, the second step is median filtering, and the third step is morphological filtering, so that the noise reduction quality of the picture reaches the standard. When the image quality processing reaches the standard, single image extraction is carried out on the image germ rice, and the main segmentation program comprises the following steps: threshold segmentation, area segmentation and adherent rice segmentation. And finally, identifying the appearance quality of the germ rice: the appearance quality of the germ rice mainly identifies two indexes, namely the processing precision of the germ rice and the integrity of the germ, wherein the processing precision of the germ adopts a classification method based on SVM.
Acquiring an image of the germinated rice: the analysis object of the detection system is a milled rice picture, so the first step is to collect milled rice images. The quality of the image should be at least clear, and the result deviation obtained by the fuzzy image is very large, so that the working stability of the camera is ensured; image preprocessing: firstly, the image needs to be subjected to gray processing, and then in order to reduce interference on feature extraction, the image needs to be subjected to filtering processing. The method comprises the steps of Gaussian filtering, median filtering and morphological filtering, and after the three steps, the quality of the picture can meet the requirements of people, so that a foundation is laid for the subsequent embryo rice image segmentation and then single-grain rice image extraction. Image segmentation: the purpose of embryo rice image segmentation is to extract a single-grain rice image and prepare for the identification of the appearance quality of the subsequent image. Image segmentation: the image segmentation procedure mainly comprises three steps, namely, firstly, threshold segmentation is carried out, and the germ rice image is binarized; and secondly, performing region segmentation, identifying regions of non-sticky rice and sticky rice grains, and extracting the non-sticky rice grains for storage. The region segmentation is divided into three steps, and a morphological method is adopted to mark, describe and segment; and finally, segmenting the adhered rice grains, and storing the segmented images. And extracting the framework from the adhered rice grains to obtain a framework endpoint, namely a segmentation endpoint calculation process. And finally, obtaining a pair of well matched segmentation end points and segmenting the image according to various different skeleton end points by end point matching. Identifying the appearance quality of the germ rice: the appearance quality of the germ rice mainly identifies two indexes, one is the processing precision of the germ rice, and the other is the integrity of the germ. The embryo processing precision recognition adopts a classification method based on an SVM, on the basis of texture characteristic parameters, the SVM is used for training according to the relation between the texture characteristic parameters and the processing precision, and finally, the processing precision grade is obtained; the embryo integrity recognition adopts a method based on a convolutional neural network, in order to accurately recognize the embryo integrity, the embryo direction is normalized firstly, the embryo position is recognized, and then the embryo direction and the embryo position are uniformly adjusted to one direction. And finally, identifying the integrity of the embryo. Feedback parameter acquisition: the purpose of detecting the appearance quality of the germ rice is to control the appearance quality of the germ rice by controlling the grinding degree. Feedback parameters are obtained by analyzing the processing precision of the milled rice with the embryo and the integrity data of the milled rice with the embryo and combining the control experience of rice mill workers on the rice mill and adopting a fuzzy control method.
Namely, the on-line detection system for the germ integrity of the germinated rice comprises a rice grain transportation part and an image detection part. The control of the germ integrity online detection platform of the germ rice is mainly completed by matching a germ rice transportation executing mechanism, a germ rice processing controller (PLC), an image acquisition device, an industrial control computer (industrial personal computer) and some auxiliary mechanical equipment. The control flow is that the industrial computer gives the instruction to the PLC controller through the data communication mode, and controller control actuating mechanism transports the plumule rice grain to the objective table, gathers the image after the industry camera and gives the industrial computer with the image transmission and handle, gives the instruction again and gives plumule rice processing controller control actuating mechanism to carry out recovery processing to the grain of rice. The whole control process mainly aims at realizing the on-line collection of the images of the germ rice in the on-line processing process of the germ rice and lays a foundation for on-line detection and analysis. When the camera shoots the detection image, rice grains on the fan-shaped tray are not stacked. The fan-shaped tray is separated by the baffle after moving, the reserved germ rice is randomly distributed on the tray, stacking cannot be formed, and image processing becomes easy. The position of the light filling lamp sleeved on the camera just can not cause the problem of uneven illumination. The collected image is subjected to filtering processing and is divided into three parts: the first step is gaussian filtering, the second step is median filtering, and the third step is morphological filtering. After the image quality is improved, single image extraction is carried out on the image germ rice, and the main segmentation program comprises the following steps: threshold segmentation, area segmentation and adherent rice segmentation. Identifying the appearance quality of the germ rice: the appearance quality of the germ rice mainly identifies two indexes, namely the processing precision of the germ rice and the integrity of the germ, wherein the processing precision of the germ adopts a classification method based on SVM.
In summary, the invention discloses a germ integrity detection executing mechanism for germ rice, and the control of an online detection platform is mainly completed by matching a germ rice transportation executing mechanism, a germ rice processing controller (PLC), an image acquisition device, an industrial control computer (industrial personal computer) and some auxiliary mechanical equipment. The germ rice germ integrity online detection system is designed, wherein the germ rice germ integrity online detection system comprises a hardware detection platform and a detection system software design, and for the hardware detection platform, a platform structure scheme, a germ rice transportation control flow and a control method are designed. The software part designs a graphical human-computer interaction interface and an identification algorithm, and provides a software framework system and software functions. The germ rice germ detection index is subjected to test analysis, the result shows that the germ index detection accuracy of the system is consistent with the manual identification accuracy, the adaptability is strong, and the method can be applied to the on-line detection of the germ rice germ integrity in the germ rice processing process.
Claims (3)
1. The utility model provides a germ rice embryo integrity on-line measuring system which characterized in that: including embryo rice transportation actuating mechanism, embryo rice processing controller, image acquisition device, industrial control computer sends the instruction through data communication mode and gives embryo rice processing controller, embryo rice processing controller control embryo rice transportation actuating mechanism transports the objective table with embryo rice grain, gather the image at image acquisition device's industrial camera and transmit the image for industrial control computer and handle, send the instruction again and give embryo rice processing controller control actuating mechanism and carry out recovery processing to the rice, there is embryo rice completeness detection software in the industrial control computer.
2. The system for on-line detection of the germ integrity of germinated rice according to claim 1, wherein: the germ rice transportation actuating mechanism comprises two stepping motors arranged on the lower side of the case, two contact switches, a rolling brush and a fan-shaped tray which are respectively provided with two motor output ends, and a strip-shaped seam arranged on the wall of the case, wherein the two contact switches are respectively arranged below the two stepping motors, and the fan-shaped tray can extend out of the strip-shaped seam under the driving of the stepping motors; the image acquisition device comprises a camera arranged in a case above the fan-shaped tray and a light supplement lamp arranged on the camera.
3. The on-line germ integrity detection system of germinated rice according to claim 1 or 2, wherein: when the germ rice is treated by the upper-layer equipment and then is transported, the fan-shaped tray is positioned outside the box body and is in a rice grain collection link; during the rice grain collection time, the germ rice can form a stack on the tray along with the time, and a shape similar to a cone is formed; when the rice grain collecting time is over, the second stepping motor is driven to rotate by a control program sent by the industrial control computer to drive the fan-shaped tray to rotate, and when the fan-shaped tray passes through the strip-shaped seam, only one layer of germ rice is left due to the limitation of the height of the strip-shaped seam, and the germ rice is randomly distributed on the tray; when the fan-shaped tray touches the second contact switch, the second stepping motor stops rotating, and the fan-shaped tray is just under the camera; entering an image acquisition link; after the camera shoots, the stepping motor II starts to rotate again and stops when touching the contact switch again; the stepping motor starts to rotate to drive the rolling brush to rotate, and meanwhile, the tray horizontally swings around the shaft to the direction of the rolling brush to clean the germ rice on the fan-shaped tray; after cleaning, the fan-shaped tray continues to rotate to the outside of the box body, and the next round of rice grain collection link is started.
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| CN116893127A (en) * | 2023-09-11 | 2023-10-17 | 中储粮成都储藏研究院有限公司 | Grain appearance quality index detector |
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Application publication date: 20210618 |