CN100449301C - Method and apparatus for non-destructive testing of fruit internal quality based on optical properties - Google Patents
Method and apparatus for non-destructive testing of fruit internal quality based on optical properties Download PDFInfo
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Abstract
The present invention discloses a method and a device for the on-line non-destructive test of the interior quality of fruits based on the light characteristics of the fruits. The device of the present invention comprises a conveying unit, an analysis processing unit, a signal control unit, an illuminating system, a test system, fruit grading outlets, a fruit inlet, a dimension testing device and an encoder, wherein the illuminating system provides irradiating light with stable and optimum light intensity; the test system can ensure that the transmitted spectrum information of the effective characteristics of the interior quality of a fruit is obtained; the fruit position information and the dimension information, which are obtained by a sensor, are transmitted to the test system by the signal control unit; the on-line spectrum test of the fruit is implemented by the test system, the fruit spectral information is transmitted to the analysis processing unit through a data acquisition system, a predictive model for the interior quality of the fruit based on the near-infrared spectrum, which is arranged in the analysis processing unit, is used for carrying out the interior quality evaluation of the fruit. The present invention considers the optimization of the size dimension of the fruit to be test and illumination match, and increases the speed and the precision of the on-line dynamic test of the fruit.
Description
Technical field
The present invention relates to online lossless detection method of a kind of inside quality and device based on the fruit light characteristic.
Background technology
The inside quality of fruit detects and classification is one of most crucial steps in the processing of farm products always, because suitable quality classification not only can prolong the shelf-life and the transportation range of fruit, the more important thing is the economic worth and the selling price that can increase fruit.Along with the continuous increase of fruits output and improving constantly of people's living standard, the consumer more and more very values for inside quality such as mouthfeel, pol, acidity and inner nutritional quality such as vitamin content etc. when choosing fruit.And at present to the check of fruit internal quality often based on destructive chemical analysis, as pol anthrone colourimetry or saccharometer, acidity is measured with potential method (pH meter), vitamin content is with colourimetry and high-performance liquid chromatogram determination etc., and these methods exist all that sample preparation is loaded down with trivial details, analysis time long, detect problems such as cost height and accuracy of detection are low.Therefore the method and apparatus of studying quick nondestructive check fruit internal quality is to realize that fruit processing in postpartum is handled and an important process of quality robotization classification.
Online Non-Destructive Testing has been subjected to more and more people's attention based on the inside quality of fruit light characteristic, because its not damaged, detection speed is fast, can satisfy the requirement that batch production fruit is handled classification postpartum well, becomes the online inside quality of fruit and detects one of important method of classification.At present that is that all right is ripe and exist more problem for the online the cannot-harm-detection device of fruit internal quality: have much room for improvement as accuracy of detection and detection speed.For the solution of these problems, many is stability and adaptability by improving the on-line prediction model, is that the environmental factor of considering online detection proposes corresponding model compensation algorithm in addition.And for an on-line measuring device, good model can improve the accuracy of online detection, still more effectively obtains the spectral information of fruit by certain detection method and device, to improve the validity of light signal, improves online accuracy of detection.
United States Patent (USP) NO.4883953, NO.5089701, NO.5324945 introduces respectively for different detected objects (liquid, "Hami" melon, oranges and tangerines with NO.5708271, apple etc.) with the different spectral band (900-1450 of utilization, 800-1050,760-1000,860-960,950-2500,800-860 etc.) carried out accordingly exploitation based on the pick-up unit of fruit internal quality light characteristic.The collection of effective spectrum when online the cannot-harm-detection device does not take into full account fruit and detects, for example the assurance of spectral detection integral time also has light source and fruit size matching optimization.Use a kind of effective detection method and device, singularity in conjunction with the online detection of fruit, the spectral detection detection system and the illumination system that adapts to the fruit different size of integral time are considered in design, to improving the precision of online detection, realize that the accuracy of the online detection of fruit internal quality is very important.
At present, utilize fruit light feature detection fruit internal quality method can be divided into reflectometry and transmission beam method basically.
Reflectometry: detect light by pick-up unit to detecting the fruit emission during detection, pick-up unit obtains fruit internal quality information at homonymy detection of reflected light by analysis.There is certain problem in present detection method: the height and the detection probe of this class device irradiates light are fixed, if the inhomogeneous meeting of the size of tested fruit causes being not quite similar for the detection position of each fruit, the detection position of fruit is not the same when detection position when therefore different fruit detect and modeling, thereby causes bigger detection error.
Diffuse transmission or transmission beam method: by pick-up unit surface launching irradiation light on detection fruit, pick-up unit detects transmitted ray in fruit bottom or opposite side, obtains fruit internal quality information by analysis during detection.Because optical signal transmissive is very weak, if detection probe is fixed, distance between the surface of detection probe and fruit is subjected to the fruit size impact so when the detection, detect light signal strength also changes thereupon, influence accuracy of detection, and change the accuracy of detection change that causes for the fruit detection position that the change in size because of fruit causes, in transmission beam method, still exist.
In sum, when utilizing the fruit light characteristic to carry out the online Non-Destructive Testing of fruit internal quality, since the fruit change in size, the variation of the effective transmitted spectrum of fruit that can cause, and then cause that accuracy of detection changes; And after also should considering the fruit change in size for transmission beam method, illumination condition also should change along with adjusting, make that its transmission signal is more effective to be obtained, thereby guarantee that the transmitted spectrum signal is in stable strength level and spectral detection instrument coupling substantially, improve the stability of detecting instrument greatly, thereby improve precision and stability that fruit internal quality detects.
Domestic research reports that domestic use near infrared spectrum mainly concentrates on the check that diminishes of grain quality and part fruits and vegetables inside quality aspect the quality of agricultural product analysis.And report do not arranged to the not damaged pick-up unit of fruit internal quality index (pol, acidity, hardness and VC content etc.) is domestic.
In a word, when utilizing the fruit light characteristic to carry out the online Non-Destructive Testing of fruit internal quality, should consider that the coupling of light source irradiation intensity and fruit size and spectral effective collect the influence to the precision that detects.
Summary of the invention
The object of the present invention is to provide online lossless detection method of a kind of inside quality and device based on the fruit light characteristic, can realize fruit so that position and attitude are presented in the spectral detection case accurately, make the luminous energy of spectral detection unit effectively shine fruit surface, fibre-optical probe can obtain the transmitted spectrum information from detected object inside accurately, in real time, effectively, the process Computer Processing is finished the detection of the fruit pol index of quality, realizes the online Non-Destructive Testing of fruit internal quality (pol, acidity, hardness and Vit C contents etc.).
The technical solution used in the present invention is as follows:
One, based on the online lossless detection method of the inside quality of fruit light characteristic, comprises the following steps:
1) fruit relies on supply unit to carry, and moves to the detection position with steady state (SS);
2) scrambler that is arranged on the supply unit obtains the positional information of fruit and is transferred to signaling control unit; Simultaneously, fruit is during through the size detecting device on the supply unit, and size detecting device obtains the dimension information of fruit and is transferred to signaling control unit;
3) signaling control unit carries out analyzing and processing to positional information and the dimension information of receiving fruit, is converted into the controller that control signal is issued detection system and illumination system;
4) controller of detection system and illumination system drives effective collection of finishing illumination and optimized dimensions coupling and fruit spectrum according to control signal;
5) analysis and processing unit provides testing result by transmitting the spectral information that comes to pol, acidity, hardness and the Vit C contents of fruit internal quality, and combining position information instructs the classification of fruit outlet grading plant then.
Two, based on the online the cannot-harm-detection device of the inside quality of fruit light characteristic:
Comprise the induction system of forming by four conveying belt and driving mechanism separately, analysis and processing unit, signaling control unit, illumination system, detection system, fruit grading outlet, fruit inlet, size detecting device, scrambler; Wherein:
1) wherein the first, second, third and the 4th conveying belt and driving mechanism separately comprise respectively: conveying belt, pallet, drive sprocket, chain, buncher, engaged wheel sprocket wheel, support and connection frame; Chain ring has the support and connection frame to connect and compose the skeleton structure of conveying belt between two chains on drive sprocket and engaged wheel sprocket wheel, and conveying belt and support and connection frame are fixed together, and pallet is embedded on the conveying belt; Its tray bottom and conveying belt bottom surface coplane, the optical alignment element is equipped with in the tray bottom, and buncher is connected with drive sprocket; The first, second, third and the 4th conveying belt and driving mechanism separately join end to end and constitute a belt induction system;
2) analysis and processing unit comprises: the group analysis forecast model that the inside quality that is used to use the baseline correction algorithm to carry out the pre-service of spectroscopic data and fruit pol, acidity, hardness and Vit C contents detects is used for the program with the signaling control unit exchange message;
3) signaling control unit comprises input, output, the processing of control signal and the program of integration that is used to realize pick-up unit everything, function; Wherein stored one group of value of presetting before detecting in advance; Signaling control unit is connected with the light source power regulator with each driving governor of scrambler, size detection controller, detection controller, detection system respectively;
4) illumination system comprises: lighting box is provided with in the lighting box: two groups of halogen tungsten bulbs, two arc illumination reflecting plates, fan and light source power regulators; Two arc illumination reflecting plate symmetries are installed on the lighting box, and two groups of halogen tungsten bulbs are installed in respectively on the arc illumination reflecting plate, and light source power regulator one end links to each other with halogen tungsten bulb, and an end of light source power regulator is connected with signaling control unit;
5) detection case in the detection system is contained in the below of lighting box;
6) fruit grading outlet and fruit inlet are contained on the 4th conveying belt and the driving mechanism, and size detecting device is contained in the 4th conveying belt and the driving mechanism both sides of fruit inlet end outlet, and scrambler is installed in the axle center of the 4th conveying belt and drive mechanism sprocket wheel.The output signal of scrambler is connected with signaling control unit with the size detection controller by electric wire respectively.
Described detection system comprises: dividing plate, and the optical alignment element detects controller, optical fiber, detection probe, concave mirror, detection case, fiber spectrometer; The optical alignment element is contained in the tray bottom, and dividing plate is contained between lighting box and the detection case; Detection probe is contained in the focal point F position of concave mirror, and detection probe is connected with fiber spectrometer by optical fiber; Fiber spectrometer is connected with the detection controller; Concave mirror is fixed on the detection case.
Described detection system comprises: dividing plate, and the optical alignment element detects controller, optical fiber, detection probe, detection case, fiber spectrometer, plane mirror, the plane mirror conveying belt, plane mirror conveying belt driving wheel, plane mirror conveying belt engaged wheel, plane mirror conveying belt drive wheel motor, plane mirror conveying belt drive motor controller; The optical alignment element is contained in the tray bottom, and dividing plate is contained between lighting box and the detection case; Detection probe is fixedly mounted on the detection case, and detection probe is connected with fiber spectrometer by optical fiber; Fiber spectrometer is connected with the detection controller; Plane mirror is fixedly mounted on the plane mirror conveying belt, and the plane mirror conveying belt is looped around on plane mirror conveying belt driving wheel and the plane mirror conveying belt engaged wheel; Plane mirror conveying belt driving wheel is connected with plane mirror conveying belt drive motor, and plane mirror conveying belt drive motor is connected with plane mirror conveying belt drive motor controller.
Described detection system comprises: dividing plate, and the optical alignment element detects controller, optical fiber, detection probe, detection case, fiber spectrometer, rotatable plane mirror, minute surface rotating driving device, minute surface rotating driving device controller; The optical alignment element is contained in the tray bottom, and dividing plate is contained between lighting box and the detection case; Detection probe is fixedly mounted on the detection case, and detection probe is connected with fiber spectrometer by optical fiber; Fiber spectrometer is connected with the detection controller; A rotatable plane mirror is installed on the minute surface rotating driving device, and the minute surface rotating driving device is installed in the detection case and is connected with minute surface rotating driving device controller.
The beneficial effect that the present invention has is: can extract effective spectral information to the fruit of online motion, and carry out spectrum pre-service and baseline correction etc., the inside quality of fast and effeciently finishing batch fruit on the production line (pol, acidity, hardness and Vit C contents etc.) detects, and owing to considered the optimization of tested fruit size and illumination coupling, the optimization of the integral time that pick-up unit is collected spectrum is to the influence of accuracy of detection, thereby improved the precision of the online detection of fruit.
Description of drawings
Fig. 1 is the pick-up unit overall schematic;
Fig. 2 is conveying belt and driving mechanism cut-open view;
Fig. 3 is first kind of detection system structural representation;
Fig. 4 is second kind of detection system structural representation;
Fig. 5 is the third detection system structural representation;
Fig. 6 is the illumination system structural representation;
Fig. 7 is the support holder structure synoptic diagram;
Fig. 8 is the conveyer belt structure synoptic diagram;
Fig. 9 is the size detecting device structural representation.
Among the figure: 1, first conveying belt and driving mechanism; 2, second conveying belt and driving mechanism; 3, analysis and processing unit; 4, signaling control unit; 5, illumination system; 6, detection system; 7, conveying belt; 8, pallet; 9, tested fruit; 10, the 3rd conveying belt and driving mechanism; 11, the 4th conveying belt and driving mechanism; 12, fruit grading outlet; 13, fruit inlet; 14, size detecting device; 15, scrambler; 101, drive sprocket; 102, chain; 103, buncher; 104, support and connection frame; 105, driven movable sprocket; 501, lighting box; 502, halogen tungsten bulb; 503, illumination reflecting plate; 504, fan; 505, light source power regulator; 601, dividing plate; 602, optical alignment element; 603, detect controller; 604, optical fiber; 605, detection probe; 606, concave mirror; 607, detection case; 608, fiber spectrometer; 609, plane mirror; 610, plane mirror conveying belt; 611, plane mirror conveying belt driving wheel; 612, plane mirror conveying belt engaged wheel; 613, plane mirror conveying belt drive wheel motor; 614, plane mirror conveying belt drive motor controller; 615, rotatable plane mirror; 616, minute surface rotating driving device; 617, minute surface rotating driving device controller; 1401, optical transmitting set; 1402, detect light beam; 1403, photodetector; 1404, size detection controller.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Shown in Fig. 1,2,8, the induction system that the present invention is made up of four conveying belt and driving mechanism, analysis and processing unit 3, signaling control unit 4, illumination system 5, detection system 6, fruit grading outlet 12, fruit inlet 13, size detecting device 14, scrambler 15; Wherein:
1) wherein the first, second, third and the 4th conveying belt and driving mechanism 1,2,10,11 comprise respectively: conveying belt 7, pallet 8, drive sprocket 101, chain 102, buncher 103, engaged wheel sprocket wheel 105, support and connection frame; Chain 102 is looped around on drive sprocket 101 and the engaged wheel sprocket wheel 105, has support and connection frame 104 to connect and compose the skeleton structure of conveying belt between two chains 102, and conveying belt 7 is fixed together with support and connection frame 104, and pallet 8 is embedded on the conveying belt 7; Its pallet 8 bottoms and conveying belt 8 bottom surface coplanes, optical alignment element 602 is equipped with in pallet 8 bottoms, and buncher 103 is connected with drive sprocket 101; The first, second, third and the 4th conveying belt and driving mechanism 1,2,10,11 join end to end and constitute a belt induction system;
2) analysis and processing unit 3 comprises: be used for the group analysis forecast model that the inside quality of the pre-service of spectroscopic data and baseline correction algorithm and fruit pol, acidity, hardness and Vit C contents detects, be used for the program with the signaling control unit exchange message;
3) signaling control unit 4 comprises the input that is used to realize pick-up unit everything, function, the processing of output control signal and the program of integration; Wherein stored one group of value of presetting before detecting in advance; Signaling control unit 4 is connected with illumination system controller 505 with each driving governor of scrambler 15, size detection controller 1404, detection controller 603, detection system respectively;
4) illumination system 5 comprises: 502, two arc illumination of 501, two groups of halogen tungsten bulbs of lighting box reflecting plate 503, fan 504, light source power regulator 505; Above element is included in the lighting box 501, two arc illumination reflecting plate 503 symmetries are installed on the lighting box 501, two groups of halogen tungsten bulb groups 502 are installed in respectively on the arc illumination reflecting plate 503, light source power regulator 505 1 ends link to each other with halogen tungsten bulb group 502, one end of power governor 505 is connected with signaling control unit 4, as Fig. 6 (a) (b) shown in;
5) detection case 607 in the detection system 6 is contained in the below of lighting box 501;
6) fruit grading outlet 12 and fruit inlet are contained on the 4th conveying belt and the driving mechanism 11, size detecting device 14 is contained in the 4th conveying belt and driving mechanism 11 both sides that fruit inlet 13 brings out mouth, and scrambler 15 is installed in the axle center of the 4th conveying belt and driving mechanism 11 drive sprockets 101.The output signal of scrambler 15 is connected with signaling control unit 4 with size detection controller 1404 by electric wire respectively.
As shown in Figure 3, described detection system 6 comprises: dividing plate 601, and optical alignment element 602 detects controller 603, optical fiber 604, detection probe 605, concave mirror 606, detection case 607, fiber spectrometer 608; Optical alignment element 602 is contained in pallet 8 bottoms, and dividing plate 601 is contained between lighting box 501 and the detection case 607; Detection probe 605 is contained in the focal point F position of concave mirror 606, and detection probe 605 is connected with fiber spectrometer 608 by optical fiber 604; Fiber spectrometer 608 is connected with detection controller 603; Concave mirror 606 affixed with detection case 607 on.
As shown in Figure 4, described detection system 6 comprises: dividing plate 601, optical alignment element 602, detect controller 603, optical fiber 604, detection probe 605, detection case 607, fiber spectrometer 608, plane mirror 609, plane mirror conveying belt 610, plane mirror conveying belt driving wheel 611, plane mirror conveying belt engaged wheel 612, plane mirror conveying belt drive wheel motor 613, plane mirror conveying belt drive motor controller 614; Optical alignment element 602 is contained in pallet 8 bottoms, and dividing plate is contained between lighting box 501 and the detection case 607; Detection probe 605 is fixedly mounted on the detection case 607, and detection probe 605 is connected with fiber spectrometer 608 by optical fiber 604; Fiber spectrometer 608 is connected with detection controller 603; Plane mirror 609 is fixedly mounted on the plane mirror conveying belt 610, and plane mirror conveying belt 610 is looped around on plane mirror conveying belt driving wheel 611 and the plane mirror conveying belt engaged wheel 612; Plane mirror conveying belt driving wheel 611 is connected with plane mirror conveying belt drive motor 613, and plane mirror conveying belt drive motor 613 is connected with plane mirror conveying belt drive motor controller 614.
As shown in Figure 5, described detection system 6 comprises: dividing plate 601, and optical alignment element 602 detects controller 603, optical fiber 604, detection probe 605, detection case 607, fiber spectrometer 608, rotatable plane mirror 615, minute surface rotating driving device 616, minute surface rotating driving device controller 617; Optical alignment element 602 is contained in pallet 8 bottoms, and dividing plate 601 is contained between lighting box 501 and the detection case 607; Probing 605 is fixedly mounted on the detection case 607, and detection probe 605 is connected with fiber spectrometer 608 by optical fiber 604; Fiber spectrometer 608 is connected with the detection controller; A rotatable plane mirror 615 is installed on the minute surface rotating driving device 616, and minute surface rotating driving device 616 is installed in the detection case 607 and is connected with minute surface rotating driving device controller 617.
As shown in Figure 9, when tested fruit arrives the detection position, fruit is between optical transmitting set 1401 and photodetector 1403, part has stopped the detection light path, size detection controller 1404 detects the signal of photodetector 1403 from bottom to top, the light that finds article one not stopped by fruit, these photodetector 1403 numberings are tabled look-up and can be determined the size of fruit.
Introduce the course of work below in conjunction with Fig. 1-9:
1. fruit inlet 13 is the mechanisms of placement fruit on pallet 8 automatically, and shown in Fig. 7 (a) and (b), it mainly finishes the placement of pallet fruit, and this link can also can be artificial realization for the automatic realization of machine;
2. fruit 4 moves to the detection position along throughput direction from fruit inlet 13, and this moment, fruit 4 presented to detect optimum attitude on pallet 8, and the movement velocity of fruit is regulated by the speed regulator 103 of conveying belt 7 on the pallet;
3. size detecting device 14 is in outlet one side of fruit inlet 13, when first fruit sample process size detection position, size detecting device obtains the dimension information of this fruit, and this information is sent to signaling control unit 4, is controlled the rayed intensity of illumination system 5 by signaling control unit;
4. are the positional informations that are used for writing down fruit through scrambler 15, when first fruit sample detects size through size detecting device 14, also write down first fruit sample and arrive the positional information that detection system 6 detects, and this positional information and dimension information sent to signaling control unit 4 simultaneously, control the rayed intensity of illumination system 5 by whistle control system;
5. before first fruit sample arrives the detection position, processing according to 4 pairs of these fruit relevant informations of signaling control unit is integrated, signaling control unit output control signal corresponding is given light source power regulator 505, and the light source power regulator is according to the corresponding optimum rayed strength condition of the size match of this fruit;
6. when first fruit sample arrives detection position, detect the controller 603 signal enabling fiber spectrometer 608 of giving an order and begin to gather the spectral information of tested fruit;
The spectra collection of 7. tested fruit 9 needs certain integral time and guarantee that spectrometer obtains the most effective spectral information and data, below three kinds of detection schemes can realize detecting and require:
Detection scheme 1: detect beginning, the tested fruit sample 9 of light source irradiation, the irradiates light of light-source system 5 passes the fruit internal transmission and goes out, the optical alignment element 602 that the tested fruit sample transmitted light that comes out is installed through the tray bottom, the slit that passes dividing plate 601 is radiated on the concave mirror 606 in the detection case 607, transmitted light by the concave reflection mirror reflection after directive be positioned at the detection probe 605 of concave mirror focal point F position; Because the motion of pallet 8, transmitted light moves on concave mirror, but the transmitted light after the reflection all can directive concave mirror focal position detection probe, finishes and detect required integral time when pallet moves to B point from A point, and the integration of spectrum all is continuous with collection in whole process; Pass to detection probe by optical fiber 604, and the transmitted light of collecting is transported to fiber spectrometer 608 handles, the transmitted light of handling well enters analysis and processing unit 3 with certain signal form as input;
Detection scheme 2: detect beginning, the tested fruit sample 9 of light source irradiation, light passes the fruit internal transmission and goes out, the optical alignment element 602 that the transmitted light that comes out is installed through pallet 8 bottoms, the slit that passes dividing plate 601 is radiated on the plane mirror 609 on the catoptron conveying belt 612 in the detection case 607, plane mirror and horizontal plane angle are 45 degree, transmitted light by the plane reflection mirror reflection after the detection probe 605 of the fixing axis horizontal of directive; Because the motion of pallet 8, transmitted light is also moving, drive motor 614 according to the movement velocity mirror surface conveying belt 612 of pallet moves with plane mirror and the pallet synchronous same-speed that corresponding speed drives above it, plane mirror is all the time with transmitted light reflection back directive detection probe, finish and detect required integral time when pallet moves to the B point from the A point, and in whole process spectrum integration and to gather all be continuous; By optical fiber 604 conduction detection probe the transmitted light of collecting is transported to fiber spectrometer 608 and handles, the transmitted light of handling well enters analysis and processing unit 3 with certain signal form as input;
Detection scheme 3: detect beginning, the tested fruit sample 9 of light source irradiation, light passes the fruit internal transmission and goes out, the optical alignment element 602 that the transmitted light that comes out is installed through pallet 8 bottoms, the slit that passes dividing plate 601 is radiated on the rotatable level crossing 615 in the detection case 607, transmitted light by the plane reflection mirror reflection after the detection probe 605 of the fixing axis horizontal of directive; Because the motion of pallet, transmitted light is subjected to displacement on horizontal level, after reflection all can the directive detection probe for the transmitted light after displacement is changed, and require plane mirror to satisfy the detection requirement around the rotation of O point; The rotation of plane mirror realizes by minute surface rotating driving device 616, finish and detect required integral time when pallet moves to B point from A point, and the integration of spectrum all is continuous with collection in whole process; By optical fiber 604 conduction detection probe the transmitted light of collecting is transported to fiber spectrometer 608 and handles, the transmitted light of handling well enters analysis and processing unit 3 with certain signal form as input;
8. the spectroscopic data that collects of fiber spectrometer 608 enters analysis and processing unit 3 by USB interface transmission or data collecting card collection, the spectroscopic data of the fruit 9 that obtains calculates the inside quality information (pol, acidity, hardness and Vit C contents etc.) of this fruit very soon according to the fruit internal quality detection model based near infrared spectrum that analysis and processing unit 3 has existed;
9. according to the inside quality information and the positional information of fruit 9, analysis and processing unit 3 is carried out integration processing and is outputed signal to signaling control unit 4, and signaling control unit 4 requires the output control signal to give fruit classification outlet 12 according to detecting classification;
10. fruit grading outlet 12 is mated classification according to the control signal of input to this fruit, allows this fruit in different grade classification mouth output by certain mechanical hook-up, finishes classification.
The present invention can summarize with other the concrete form without prejudice to spirit of the present invention and principal character.Therefore, no matter from which point, above-mentioned embodiment of the present invention all can only be thought can not limit the present invention to explanation of the present invention, claims have been pointed out scope of the present invention, and scope of the present invention is not pointed out in above-mentioned explanation, therefore, in implication suitable and any change in the scope, all should think to be included in the scope of claims with claims of the present invention.
Claims (5)
1. based on the online lossless detection method of the inside quality of fruit light characteristic, comprise the following steps:
Fruit relies on supply unit to carry, and moves to the detection position with steady state (SS);
The scrambler that is arranged on the supply unit obtains the positional information of fruit and is transferred to signaling control unit; Simultaneously, fruit is during through the size detecting device on the supply unit, and size detecting device obtains the dimension information of fruit and is transferred to signaling control unit;
Signaling control unit carries out analyzing and processing to positional information and the dimension information of receiving fruit, is converted into the controller that control signal is issued detection system and illumination system; It is characterized in that:
1) controller of detection system and illumination system drives effective collection of finishing illumination and optimized dimensions coupling and fruit spectrum according to control signal; Illumination and optimized dimensions matching process are to give the light source power regulator by signaling control unit output control signal corresponding, and the light source power regulator is according to the corresponding optimum rayed intensity of fruit size match; Effective acquisition method of fruit spectrum is to guarantee that by plane mirror or the rotatable level crossing in the detection case that is installed in concave mirror in the detection case or the detection case on the conveying belt fruit detects required integral time in motion process, finish the continuous acquisition and the integration of spectrum;
2) analysis and processing unit provides testing result by transmitting the spectral information that comes to pol, acidity, hardness and the Vit C contents of fruit internal quality, and combining position information instructs the classification of fruit outlet grading plant then.
2. based on the online the cannot-harm-detection device of the inside quality of fruit light characteristic, it is characterized in that, comprise the induction system of forming by four conveying belt and driving mechanism separately, analysis and processing unit (3), signaling control unit (4), illumination system (5), detection system (6), fruit grading outlet (12), fruit inlet (13), size detecting device (14), scrambler (15); Wherein:
1) wherein the first, second, third and the 4th conveying belt and driving mechanism (1,2,10,11) separately comprise respectively: conveying belt (7), pallet (8), drive sprocket (101), chain (102), buncher (103), engaged wheel sprocket wheel (105), support and connection frame; Chain (102) is looped around on drive sprocket (101) and the engaged wheel sprocket wheel (105), there is support and connection frame (104) to connect and compose the skeleton structure of conveying belt between two chains (102), conveying belt (7) is fixed together with support and connection frame (104), and pallet (8) is embedded on the conveying belt (7); Its pallet (8) bottom and conveying belt (7) bottom surface coplane, optical alignment element (602) is equipped with in pallet (8) bottom, and buncher (103) is connected with drive sprocket (101); The first, second, third and the 4th conveying belt driving mechanism (1,2,10,11) separately joins end to end and constitutes a belt induction system;
2) analysis and processing unit (3) comprising: the group analysis forecast model that the inside quality that is used to use the baseline correction algorithm to carry out the pre-service of spectroscopic data and fruit pol, acidity, hardness and Vit C contents detects is used for the program with the signaling control unit exchange message;
3) signaling control unit (4) comprises input, output, the processing of control signal and the program of integration that is used to realize pick-up unit everything, function; Wherein stored one group of value of presetting before detecting in advance; Signaling control unit (4) is connected with light source power regulator (505) with each driving governor of scrambler (15), size detection controller (1404), detection controller (603), detection system respectively;
4) illumination system (5) comprising: lighting box (501), and lighting box is provided with in (501): two groups of halogen tungsten bulbs (502), two arc illumination reflecting plates (503), fan (504) and light source power regulator (505); Two arc illumination reflecting plates (503) symmetry is installed on the lighting box (501), two groups of halogen tungsten bulbs (502) are installed in respectively on the arc illumination reflecting plate (503), light source power regulator (505) one ends link to each other with halogen tungsten bulb (502), and an end of light source power regulator (505) is connected with signaling control unit (4);
5) detection case (607) in the detection system (6) is contained in the below of lighting box (501);
6) fruit grading outlet (12) and fruit inlet is contained on the 4th conveying belt and the driving mechanism (11), size detecting device (14) is contained in the 4th conveying belt and driving mechanism (11) both sides that fruit inlet (13) brings out mouth, scrambler (15) is installed in the axle center of the 4th conveying belt and driving mechanism (11) drive sprocket (101), and the output signal of scrambler (15) is connected with signaling control unit (4) with size detection controller (1404) by electric wire respectively.
3. the online the cannot-harm-detection device of a kind of inside quality according to claim 2 based on the fruit light characteristic, it is characterized in that described detection system (6) comprising: dividing plate (601), optical alignment element (602), detect controller (603), optical fiber (604), detection probe (605), concave mirror (606), detection case (607), fiber spectrometer (608); Optical alignment element (602) is contained in pallet (8) bottom, and dividing plate (601) is contained between lighting box (501) and the detection case (607); Detection probe (605) is contained in the focal point F position of concave mirror (606), and detection probe (605) is connected with fiber spectrometer (608) by optical fiber (604); Fiber spectrometer (608) is connected with detection controller (603); Concave mirror (606) is fixed on the detection case (607).
4. the online the cannot-harm-detection device of a kind of inside quality according to claim 2 based on the fruit light characteristic, it is characterized in that described detection system (6) comprising: dividing plate (601), optical alignment element (602), detect controller (603), optical fiber (604), detection probe (605), detection case (607), fiber spectrometer (608), plane mirror (609), plane mirror conveying belt (610), plane mirror conveying belt driving wheel (611), plane mirror conveying belt engaged wheel (612), plane mirror conveying belt drive wheel motor (613), plane mirror conveying belt drive motor controller (614); Optical alignment element (602) is contained in pallet (8) bottom, and dividing plate is contained between lighting box (501) and the detection case (607); Detection probe (605) is fixedly mounted on the detection case (607), and detection probe (605) is connected with fiber spectrometer (608) by optical fiber (604); Fiber spectrometer (608) is connected with detection controller (603); Plane mirror (609) is fixedly mounted on the plane mirror conveying belt (610), and plane mirror conveying belt (610) is looped around on plane mirror conveying belt driving wheel (611) and the plane mirror conveying belt engaged wheel (612); Plane mirror conveying belt driving wheel (611) is connected with plane mirror conveying belt drive motor (613), and plane mirror conveying belt drive motor (613) is connected with plane mirror conveying belt drive motor controller (614).
5. the online the cannot-harm-detection device of a kind of inside quality according to claim 2 based on the fruit light characteristic, it is characterized in that described detection system (6) comprising: dividing plate (601), optical alignment element (602) detects controller (603), optical fiber (604), detection probe (605), detection case (607), fiber spectrometer (608), rotatable plane mirror (615), minute surface rotating driving device (616), minute surface rotating driving device controller (617); Optical alignment element (602) is contained in pallet (8) bottom, and dividing plate (601) is contained between lighting box (501) and the detection case (607); Detection probe (605) is fixedly mounted on the detection case (607), and detection probe (605) is connected with fiber spectrometer (608) by optical fiber (604); Fiber spectrometer (608) is connected with the detection controller; A rotatable plane mirror (615) is installed on the minute surface rotating driving device (616), and minute surface rotating driving device (616) is installed in the detection case (607) and is connected with minute surface rotating driving device controller (617).
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