CN100470240C - Fruit size compensation method and apparatus for light characteristic on-line detection of internal fruit quality - Google Patents
Fruit size compensation method and apparatus for light characteristic on-line detection of internal fruit quality Download PDFInfo
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- CN100470240C CN100470240C CNB2005100506940A CN200510050694A CN100470240C CN 100470240 C CN100470240 C CN 100470240C CN B2005100506940 A CNB2005100506940 A CN B2005100506940A CN 200510050694 A CN200510050694 A CN 200510050694A CN 100470240 C CN100470240 C CN 100470240C
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/02—Food
- G01N33/025—Fruits or vegetables
Abstract
The invention relates to a fruit size compensation method and apparatus of a fruit inner quality light peculiarity online detecting. The apparatus is formed by a transmitting unit, a size detecting unit, a size compensation unit, a control unit and a driving unit. The fruit moves in the transmitting unit by rotating stage; the size detecting unit obtains the size information of the fruit; the encoder obtains the location information of the fruit; the size information and the location information are transmitted into the control unit after analyzing and processing; the control information is transmitted into the driving unit; the driving size compensation unit dose size compensation.
Description
Technical field
The present invention relates to the fruit size compensation method and the device of the online detection of a kind of fruit internal quality light characteristic, refer in particular to spherical fruit or spherical agricultural product are carried out on-line detection method and device.
Background technology
Online Non-Destructive Testing based on the fruit internal quality light characteristic has been subjected to more and more people's attention, because its not damaged, detection speed is fast, can well satisfy the requirement that batch production fruit is handled classification postpartum, 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: as having much room for improvement of 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, but by certain compensation method and the accurate detection position of locating fruit of device, to improve the validity of light signal, improves online accuracy of detection.
U.S. Pat 6563579 B1 have introduced an adjustable infrared emission and receiving trap, but its complex structure, there is certain difficulty in concrete enforcement, only considered for the influence of the fruit detection position variation that causes owing to the fruit size, and compensating of the distance between detection probe and the fruit surface do not considered accuracy of detection.Other online the cannot-harm-detection device based on the fruit internal quality light characteristic does not consider to detect when fruit rolls the method for the size of fruit, does not just have to consider that the detection error that the fruit size is caused is compensated yet.Use a kind of effective detection size compensation method and device,, improve the precision of online detection, realize that the accuracy of the online detection of fruit internal quality is very important in conjunction with the distinctive face shaping feature of fruit.
For different fruit, its inside quality precision can change because of the difference of detection position, when requirement detects carry out inside quality with a kind of fruit like this, and the identical inside quality that just can accurately reflect it in the detection position of fruit.
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.
Transmission beam method: detect light by pick-up unit to detecting the fruit emission during detection, pick-up unit detects transmitted ray at opposite side, obtains fruit internal quality information by analysis.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 detection of fruit internal quality, because the fruit change in size, the fruit detection position that can cause changes, and then causes that accuracy of detection changes; And after also should considering the fruit change in size for transmission beam method, the optical signal transmission loss that the variable in distance between detection probe and the fruit surface causes and cause that accuracy of detection changes.
In a word, when utilizing the fruit light characteristic to carry out the online detection of fruit internal quality, should consider of the influence of fruit size to the precision of detection.
Summary of the invention
Problem at the prior art existence, the invention provides a kind of fruit size compensation method and device of serving the online detection of fruit internal quality light characteristic, by detecting the fruit size, and carry out suitable compensation, the detection position that the detection position of fruit and fruit internal quality detection model are set up when detecting with assurance is basic identical, thereby guarantees accuracy of detection.
The technical solution used in the present invention is as follows:
The fruit size compensation method of the online detection of a kind of fruit internal quality light characteristic comprises the following steps:
Fruit relies on supply unit to carry, and moves to the detection position with rolling condition;
The scrambler that is arranged on the supply unit obtains the positional information of rolling fruit and is transferred to control module;
Simultaneously, when fruit passed through two size detecting unit of successively arranging on the supply unit, two size detecting unit were obtained the dimension information of fruit respectively and are transferred to control module;
Control module carries out analyzing and processing to positional information and the dimension information of receiving, is converted into control signal and issues driver element;
Driver element drives the dimension compensation unit according to control signal the fruit that arrives the detection position is implemented dimension compensation.
Be used to realize the fruit dimension compensation device of said method, comprise supply unit, dimension compensation unit, size detecting unit, scrambler, control module and driver element; Scrambler, size detecting unit and dimension compensation unit are arranged on the supply unit successively; Scrambler is by lead size for connection detecting unit; Scrambler is connected control module respectively with size detecting unit, and control module connects driver element, driver element size for connection compensating unit.
Described supply unit comprises drive sprocket, friction band, chain, roller, little axle, friction band cylinder, stretching pulley and buncher, and chain ring has the support and connection frame to connect on two drive sprockets between two chains, constitute the skeleton structure of conveying belt; Roller is installed on the chain by little axle; The friction band is on friction band cylinder and stretching pulley, and roller is pressed in friction and is with, and buncher is connected with friction band cylinder.
Described dimension compensation unit comprises crane span structure, tooth bar one, irradiation unit, slide block one, support one, x axle driven wheel, slide block three, support three, tooth bar two, z axle driven wheel, slide block two, support two, detection probe, z axle drive stepping motor and x axle drive stepping motor; Support one is fixedlyed connected with support three, and support one and support two are affixed by the crane span structure three, and support two is affixed with slide block three, and support one, crane span structure, support two and support three constitute " mouth " word shape; Irradiation unit and slide block one are affixed, and detection probe and slide block two are affixed; Slide block one can move in the dovetail groove of support one, and slide block two can move in the dovetail groove of support two, and slide block three can move in the dovetail groove of support three; Tooth bar one is fixed in slide block one outside, and tooth bar two is fixed in slide block three downsides; One engagement of z axle driving gear wheel and rack, two engagements of x axle driving gear wheel and rack; Z axle driven wheel is connected with z axle drive stepping motor by axle, and x axle driven wheel is connected with x axle drive stepping motor by axle; Z axle drive stepping motor and x axle drive stepping motor are connected on the driver element by lead.
Described size detecting unit comprises optical transmitting set, photodetector and size detection controller; Optical transmitting set comprises one group of light emitting diode, and photodetector comprises one group of light sensor; Optical transmitting set is connected with the size detection controller by lead respectively with photodetector, and scrambler and control module detect controller by the lead size for connection respectively.
Described control module comprises and is used for x direction of principal axis fruit dimension compensation unit and z direction of principal axis fruit dimension compensation unit that control module is connected with the size detection controller of scrambler, size detecting unit respectively.
The invention has the beneficial effects as follows: the present invention has realized the irradiation unit and the detection probe of automatic adjustment dimension compensation unit, no matter the fruit dimensional variations allows irradiates light shine the equatorial positions of fruit all the time, allow detection probe be adjusted to automatically and surface, fruit equator between the optimum detection position, effective acquisition of transmission light.By guaranteeing the consistance of testing conditions, effectively extract the transmitted light of rapid movement fruit, improve the online accuracy of detection of fruit, improve based on the online Non-Destructive Testing automatization level of the inside quality of fruit light characteristic.
Description of drawings
Fig. 1 is an overall schematic;
Fig. 2 is the supply unit structural drawing;
Fig. 3 is that the B of Fig. 1 is to enlarged drawing;
The little axle construction synoptic diagram of Fig. 4;
Fig. 5 is the roller structure synoptic diagram;
Fig. 6 dimension compensation cellular construction synoptic diagram;
Fig. 7 is that the C of Fig. 6 is to figure;
Fig. 8 is a dimension compensation cell operation process flow diagram;
Fig. 9 is the size detecting unit schematic diagram.
Reference numeral:
1, supply unit; 2, dimension compensation unit; 3, size detecting unit; 4, fruit; 5, scrambler; 6, control module; 7, driver element; 8, detection position; 101, drive sprocket; 102, friction band; 103, chain; 104, roller; 105, friction band cylinder; 106, stretching pulley; 107, buncher; 108, little axle; 109, support and connection frame; 201, crane span structure; 202, tooth bar one; 203, irradiation unit; 204, slide block one; 205, support one; 206, z axle driven wheel; 207, z axle drive stepping motor; 208 slide blocks three; 209, support three; 2010, x axle driven wheel; 2011, x axle drive stepping motor; 2012, tooth bar two; 2013, slide block two; 2014, support two; 2015, detection probe; 301, optical transmitting set; 302, detect light beam; 303, photodetector; 304, size detection controller.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
The design of fruit dimension compensation device is described as Fig. 1 to Fig. 8 in the fruit on-line measuring device.
As shown in Figure 1, this dimension compensation device is by supply unit 1, dimension compensation unit 2, size detecting unit 3, scrambler 5, control module 6, driver element 7 compositions such as grade.
As Fig. 2, shown in Figure 3, supply unit comprises drive sprocket 101, and friction is with 102, chain 103, roller 104, friction band cylinder 105, stretching pulley 106, buncher 107, little axle 108 and support and connection frame 109.
Chain 103 is looped around on two drive sprockets 101, has support and connection frame 109 to connect and compose the skeleton structure of conveying belt between two chains; Roller 104 is installed on the chain 103 by little axle 108, and friction is with 102 to be looped around on friction band cylinder 105 and the stretching pulley 106, and roller 104 is pressed in friction and is with on 102, and buncher 107 is connected with friction band cylinder 105.
As shown in Figure 3, little axle 108 axis of passing roller 104 are connected with roller 104, and little axle two ends are connected with chain respectively, and little axle two ends are contained on the aperture of chain 103 correspondences, can rotate on chain 103;
As shown in Figure 4, little axle 108 structures are that two ends are circular shafts, and center section is a square shaft.
As shown in Figure 5, roller 104 axial location are square holes, and roller 104 is connected with little axle by square hole, and both are clearance fit.
As Fig. 6, shown in Figure 7, dimension compensation unit 2 is by crane span structure 201, tooth bar 1, irradiation unit 203, slide block 1, support 1, z axle driven wheel 206, z axle drive stepping motor 207, slide block 3 208, support 3 209, x axle driven wheel 2010, x axle drive stepping motor 2011, tooth bar 2 2012, slide block 2 2013, support 2 2014, detection probe 2015 compositions such as grade.
Support 1 is fixedlyed connected with support 3 209, and support 1 and support 2 2014 are affixed by crane span structure 201 threes, and support 2 2014 is affixed with slide block 3 208, and support 1, crane span structure 201, support 2 2014 and support 3 209 constitute " mouth " word shape; Irradiation unit 203 is affixed with slide block 1, and detection probe 2015 is affixed with slide block 2 2013; Slide block 1 can move along the z direction of principal axis in the dovetail groove of support 1, and slide block 2 2013 can move along the z direction of principal axis in the dovetail groove of support 2 2014, and slide block 3 208 can move along the x direction of principal axis in the dovetail groove of support 3 209; Tooth bar 1 is fixed in slide block one 204 outsides, and tooth bar 2 2012 is fixed in slide block 3 208 downsides; Z axle driven wheel 206 and tooth bar one 202 engagements, x axle driven wheel 2010 and tooth bar 2 2012 engagements; Z axle driven wheel 206 is connected with z axle drive stepping motor 207 by axle, and x axle driven wheel 2010 is connected with x axle drive stepping motor 2011 by axle; Z axle drive stepping motor 207 and x axle drive stepping motor 2011 are connected on the driver element 7 by lead.
As shown in Figure 9, size detecting unit 3 comprises optical transmitting set 301, photodetector 303 and size detection controller 304; Optical transmitting set 301 comprises one group of light emitting diode, and photodetector 303 is one group of light sensor.Optical transmitting set 301 is connected with size detection controller 304 by electric wire respectively with photodetector 303.Each photodetector 303 pairing fruit size is determined by test, and is deposited in size detection controller 304 with form.
Scrambler 5 is installed in the axle center of a drive sprocket 101.The output signal of scrambler 5 is connected with control module 6 with size detection controller 304 by electric wire respectively.
Introduce the course of work below in conjunction with Fig. 8:
1. before fruit 4 detects beginning along throughput direction, the position height value of default irradiation unit 203 and detection probe 2015, the distance value of default detection probe 2015 and inspection center position.
2. detect beginning, fruit 4 is transferred the unit and carries, and rotates with certain speed on the roller on the conveying belt 107 104, carries out size detection under rolling condition;
3. determine that through scrambler 5 fruit of positional information successively passes through first and second size detection position of size detecting unit 3, dimension information that obtains and positional information are input to control module 6, obtain fruit size value accurately;
4. the fruit dimension information that obtains of control module 6 is given driver element 7 in conjunction with the feedback information of default initial value and dimension compensation unit 2 through integrating and calculate the output control signal, and driver element 7 drives compensating unit 2 according to the control signal of input;
When 5. fruit arrives the detection position, dimension compensation unit 2 drives the z axle driven wheel 206 that be used to adjust irradiation unit 203 height according to control signal by z axle drive stepping motor 207 by driver element 7, the slide block 1 that is fixed together with the tooth bar 1 of z axle driven wheel 206 engagement and with tooth bar 1 is along with the rotation of z axle driven wheel 206 can be moved along the z direction of principal axis, be installed in irradiation unit 203 on the slide block 1 along with the position adjustment of doing on the z direction of principal axis, make irradiates light be radiated at the position, equator of tested fruit surface; Carry out z axial position adjustment synchronously by the detection probe 2015 that crane span structure 201 is fixed together, make detection probe 2015 collect the information that comes from fruit equatorial positions transmitted light all the time;
6. a cover is used for independently detection probe 2015 being carried out dimension compensation to the distance of fruit surface with the compensation system of top description same structure, when fruit arrives the detection position, driver element 7 drives the x axle driven wheel 2010 that is used to adjust detection probe 2015 and fruit surface distance according to control signal, the slide block 3 208 that is fixed together with the tooth bar 2 2012 of x axle driven wheel 2010 engagement and with tooth bar is along with the rotation of x axle driven wheel 2010 is moved along the x direction of principal axis, the support 2 2014 that is fixed on the slide block 3 208 drives detection probe 2015 along with doing the adjustment of corresponding position, make detection probe 2015 and fruit equator surface distance remain on the optimum position, thereby the transmitted light information of effective collection fruit internal is had great improvement.
As shown in Figure 9, the principle of fruit size detection is: when tested fruit arrives the sensor position, fruit is between optical transmitting set 301 and photodetector 303, part has stopped the detection light path, size detection controller 304 detects the signal of photodetector 303 from bottom to top, when finding the light of the photodetector 303 that article one do not stop by fruit to detect information, table look-up according to these photodetector 303 numberings and can determine the size of fruit.
The compensation principle of z direction of principal axis fruit dimension compensation unit is:
1. detect first fruit: z=d/2-l
z, as z〉0 the time to the positive dirction motion compensation of z, when z＜0 to the negative direction motion compensation of z;
2. detect n fruit (n〉1): z=(d
n-d
N-1)/2 are as z〉0 the time to the positive dirction motion compensation of z, when z＜0 to the negative direction motion compensation of z.
The compensation principle of x direction of principal axis fruit dimension compensation unit is:
1. detect first fruit: x=d/2-l
x, as x〉0 the time to the positive dirction motion compensation of x, when x＜0 to the negative direction motion compensation of x;
2. detect n fruit (n〉1): x=(d
n-d
N-1)/2 are as x〉0 the time to the positive dirction motion compensation of x, when x＜0 to the negative direction motion compensation of x.
Wherein, z is the compensate for displacement amount, l
zAnd l
xBe first value of establishing of irradiation unit and detection probe, d is the transverse diameter size of fruit.
For example, the size d that obtains under rolling condition of fruit is 58mm.If first fruit is detected, according to the height l of predefined irradiation unit
x=20mm (is benchmark with the travelling belt plane) calculates the axial compensation rate of z and is: z=58mm/2-20mm=9mm.If n fruit is detected, the axial compensation rate of z is: the size of known n-1 fruit is 58mm, and the size of n fruit is 75mm, then z=(75-58)/2mm=8.5mm.The compensation principle of detection probe and fruit surface distance is same as top method and does not give unnecessary details.
At last, it is also to be noted that what more than enumerate only is specific embodiments of the invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.
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 (6)
1, the fruit size compensation method of the online detection of a kind of fruit internal quality light characteristic comprises the following steps:
Fruit relies on supply unit to carry, and moves to the detection position with rolling condition;
The scrambler that is arranged on the supply unit obtains the positional information of rolling fruit and is transferred to control module;
Simultaneously, when fruit passed through two size detecting unit of successively arranging on the supply unit, two size detecting unit were obtained the dimension information of fruit respectively and are transferred to control module;
Control module carries out analyzing and processing to positional information and the dimension information of receiving, is converted into control signal and issues driver element;
Driver element drives the dimension compensation unit according to control signal the fruit that arrives the detection position is implemented dimension compensation.
2, a kind of fruit dimension compensation device that is used to realize the method for claim 1 comprises supply unit, dimension compensation unit, size detecting unit, scrambler, control module and driver element; Scrambler, size detecting unit and dimension compensation unit are arranged on the supply unit successively; Scrambler is by lead size for connection detecting unit; Scrambler is connected control module respectively with size detecting unit, and control module connects driver element, driver element size for connection compensating unit.
3, fruit dimension compensation device according to claim 2, it is characterized in that: described supply unit comprises drive sprocket, friction band, chain, roller, little axle, friction band cylinder, stretching pulley and buncher, chain ring is on two drive sprockets, there is the support and connection frame to connect between two chains, constitutes the skeleton structure of conveying belt; Roller is installed on the chain by little axle; The friction band is on friction band cylinder and stretching pulley, and roller is pressed in friction and is with, and buncher is connected with friction band cylinder.
4, fruit dimension compensation device according to claim 2, it is characterized in that: described dimension compensation unit comprises crane span structure, tooth bar one, irradiation unit, slide block one, support one, x axle driven wheel, slide block three, support three, tooth bar two, z axle driven wheel, slide block two, support two, detection probe, z axle drive stepping motor and x axle drive stepping motor; Support one is fixedlyed connected with support three, and support one and support two are affixed by the crane span structure three, and support two is affixed with slide block three, and support one, crane span structure, support two and support three constitute " mouth " word shape; Irradiation unit and slide block one are affixed, and detection probe and slide block two are affixed; Slide block one can move in the dovetail groove of support one, and slide block two can move in the dovetail groove of support two, and slide block three can move in the dovetail groove of support three; Tooth bar one is fixed in slide block one outside, and tooth bar two is fixed in slide block three downsides; One engagement of z axle driving gear wheel and rack, two engagements of x axle driving gear wheel and rack; Z axle driven wheel is connected with z axle drive stepping motor by axle, and x axle driven wheel is connected with x axle drive stepping motor by axle; Z axle drive stepping motor and x axle drive stepping motor are connected on the driver element by lead.
5, fruit dimension compensation device according to claim 2, it is characterized in that: described size detecting unit comprises optical transmitting set, photodetector and size detection controller; Optical transmitting set comprises one group of light emitting diode, and photodetector comprises one group of light sensor; Optical transmitting set is connected with the size detection controller by lead respectively with photodetector, and scrambler and control module detect controller by the lead size for connection respectively.
6, fruit dimension compensation device according to claim 2, it is characterized in that: described control module comprises and is used for x direction of principal axis fruit dimension compensation unit and z direction of principal axis fruit dimension compensation unit that control module is connected with the size detection controller of scrambler, size detecting unit respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100506940A CN100470240C (en) | 2005-07-13 | 2005-07-13 | Fruit size compensation method and apparatus for light characteristic on-line detection of internal fruit quality |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100506940A CN100470240C (en) | 2005-07-13 | 2005-07-13 | Fruit size compensation method and apparatus for light characteristic on-line detection of internal fruit quality |
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| CN1731160A CN1731160A (en) | 2006-02-08 |
| CN100470240C true CN100470240C (en) | 2009-03-18 |
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| CNB2005100506940A Expired - Fee Related CN100470240C (en) | 2005-07-13 | 2005-07-13 | Fruit size compensation method and apparatus for light characteristic on-line detection of internal fruit quality |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449301C (en) * | 2006-03-24 | 2009-01-07 | 浙江大学 | Method and apparatus for non-destructive testing of fruit internal quality based on optical properties |
| CN106672538A (en) * | 2017-03-04 | 2017-05-17 | 中国包装和食品机械有限公司 | Flexible lifting device for fruit |
| CN111351792A (en) * | 2020-03-23 | 2020-06-30 | 塔里木大学 | Optical detection device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6563579B1 (en) * | 1998-05-15 | 2003-05-13 | Mitsui Mining & Smelting Co., Ltd. | Measurement apparatus for measuring internal quality of object |
| CN1444731A (en) * | 2000-05-29 | 2003-09-24 | 食物制备系统有限公司 | Detection system for storting apparatus |
| CN2856988Y (en) * | 2005-07-13 | 2007-01-10 | 浙江大学 | Fruit size compensating system for on-line light characteristic of detecting inside quality of fruit |
-
2005
- 2005-07-13 CN CNB2005100506940A patent/CN100470240C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6563579B1 (en) * | 1998-05-15 | 2003-05-13 | Mitsui Mining & Smelting Co., Ltd. | Measurement apparatus for measuring internal quality of object |
| CN1444731A (en) * | 2000-05-29 | 2003-09-24 | 食物制备系统有限公司 | Detection system for storting apparatus |
| CN2856988Y (en) * | 2005-07-13 | 2007-01-10 | 浙江大学 | Fruit size compensating system for on-line light characteristic of detecting inside quality of fruit |
Non-Patent Citations (2)
| Title |
|---|
| 水果内部品质光特性无损检测研究及应用. 应义斌，刘燕德.浙江大学学报(农业与生命科学版)，第29卷第2期. 2003 |
| 水果内部品质光特性无损检测研究及应用. 应义斌，刘燕德.浙江大学学报(农业与生命科学版)，第29卷第2期. 2003 * |
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