CN110108650A - Fruit internal quality detects height adaptive and temperature correction device - Google Patents
Fruit internal quality detects height adaptive and temperature correction device Download PDFInfo
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- CN110108650A CN110108650A CN201910458412.2A CN201910458412A CN110108650A CN 110108650 A CN110108650 A CN 110108650A CN 201910458412 A CN201910458412 A CN 201910458412A CN 110108650 A CN110108650 A CN 110108650A
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- 235000013399 edible fruits Nutrition 0.000 title claims abstract description 80
- 238000012937 correction Methods 0.000 title claims abstract description 22
- 230000003044 adaptive effect Effects 0.000 title claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 51
- 238000005286 illumination Methods 0.000 claims abstract description 15
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 7
- 238000004364 calculation method Methods 0.000 claims description 23
- 230000003287 optical effect Effects 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 13
- 210000000352 storage cell Anatomy 0.000 claims description 12
- 238000009529 body temperature measurement Methods 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 229910052736 halogen Inorganic materials 0.000 claims description 7
- 150000002367 halogens Chemical class 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 6
- 230000003595 spectral effect Effects 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000007423 decrease Effects 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
- G01N21/274—Calibration, base line adjustment, drift correction
Abstract
The invention discloses a kind of fruit internal quality detection height adaptive and temperature correction devices.Including shell, illumination region, light reception element, fixed ring；Housing upper surface is equipped with liquid crystal display and input button；Illumination region is equipped with equipped with circular shape slot, housing upper surface among shell and positioned at circular shape slot two sides；It is evenly equipped with four hollow cylinders I in first order stepped groove slot, is respectively arranged with spring in each hollow cylinder I, groove center is equipped with light reception element and temperature sensor；Supporting table is installed right above light reception element, circumferentially face is evenly equipped with four hollow cylinders II for being nested in I upper end of hollow cylinder to supporting table；Second level stepped groove slot inner wall is embedded with fixed ring, and fixed ring inner wall is spacedly distributed the elastic piece for having muti-piece towards fixed ring center.Present invention decreases, because of error caused by height change and temperature change, improve the precision of detection when fruit detection, can quickly obtain fruit internal quality index.
Description
Technical field
The invention belongs to fruits and vegetables inside quality detection fields, certainly more particularly, to a kind of fruit internal quality detection height
Adaptation and temperature correction device.
Background technique
In recent years, with the raising of the development of agricultural science and technology and living standards of the people, domestic and international fruit variety is more and more,
People also have higher requirement the quality of fruit.In order to improve the processing quality and product grade of fruit, need to fruit
Carry out stringent quality testing and sorting.Complicated point is needed in agricultural food product production to the growing demand of quality assurance
Analysis method carries out line Quality Control.One of which is visible light near-infrared spectrum technique, with operating cost is low, does not need
Sample preparation, it is lossless, environmentally friendly, quick the advantages that.
In actually detected middle discovery, the size of similar fruit often has a larger range, and common detection device cannot be certainly
Dynamic to adjust fruit placing height, position height when different size fruit detects is different, this can cause a fixing to testing result
It rings.Further, since using light source when detecting is halogen lamp, halogen lamp, which generates higher heat while shining, to be caused to examine
Sample temperature changes, this can also have an impact testing result to a certain extent.
Summary of the invention
In order to solve the problems in background technique, the present invention provides a kind of fruit internal quality detection height adaptive and
Temperature correction device can not automatically adjust fruit height according to fruit size to solve existing detection device, and according to sample
The problem of temperature change is corrected can be realized the effect of precise measurement sample interior quality.
The technical solution adopted by the invention is as follows:
The present invention includes shell, illumination region, light reception element, fixed ring；Housing upper surface is equipped with liquid crystal display and input
Button；Illumination region is equipped with equipped with circular shape slot, housing upper surface among shell and positioned at circular shape slot two sides；Stepped groove
It is distributed along the circumference with four hollow cylinders I in first order stepped groove slot, upper end is respectively arranged in each hollow cylinder I and stretches out open circles
The spring of column I, first order stepped groove groove center are equipped with light reception element and temperature sensor；Branch is installed right above light reception element
Support platform, supporting table is intermediate for placing the column annular table of spherical fruit, supporting table circumferentially face be evenly equipped with four with it is hollow
The corresponding hollow cylinder II in I position of cylinder, hollow cylinder II are nested in I upper end of hollow cylinder, and the spring inside hollow cylinder I is logical
It crosses and resists II upper end of hollow cylinder support supporting table upwardly；The second level stepped groove slot inner wall of stepped groove is embedded with fixed ring,
Fixed ring inner wall is spacedly distributed the elastic piece for having muti-piece towards fixed ring center, and spherical fruit bottom passes through muti-piece elastic piece branch
Support.
The elastic piece is using the material preparation being readily bent under external force.
Luminous halogen lamp is equipped with inside the illumination region, halogen lamp carries out light irradiation from spherical fruit two sides；It receives
Light portion is located at the underface of spherical fruit placement position, is made of receiving transducer and transmission fiber, for receiving transmitted light；Temperature
Sensor is used to acquire the temperature of spherical fruit.
Further include the power input unit positioned at housing bottom, data transport storage cell, optical detecting unit, calculate control
Unit, temperature measurement unit and display input unit；Data transport storage cell, optical detecting unit, calculation control unit, temperature
Measuring unit, display input unit, illumination region, light reception element and temperature sensor are connected with power input unit, and power supply is defeated
Enter unit for whole device power supply；Optical detecting unit, temperature measurement unit, data transport storage cell and display input unit are equal
It is connected with calculation control unit；Collected temperature data is transmitted to calculating control by temperature measurement unit by temperature sensor
Unit；The transmitted light that light reception element receives is transmitted to optical detecting unit through transmission fiber, and optical detecting unit carries out transmitted light
Light splitting detects and the transfer spectral information that will acquire is to calculation control unit, and calculation control unit obtains spherical according to spectral information
Fruit quality detection value；Calculation control unit is according to temperature data to the quality after being corrected after quality measurements rectification building-out
Detected value, and the quality measurements after correction are exported to data transport storage cell and display input unit, data transmission is deposited
Storage unit stores data, and data are shown on liquid crystal display by display input unit.
The quality measurements of the spherical fruit are specially the Internal quality indexes such as pol value, acidity value.
The present invention provides a kind of temperature correction scheme, because of error caused by temperature change when reducing fruit detection, mention
The high precision of detection.
Temperature correction working principle:
The calculation control unit examines the quality after being corrected after quality measurements rectification building-out according to temperature data
The process of measured value specifically: the temperature data and Quality Detection value for obtaining sample fruit by experiment detection first, according to sample
The temperature and Quality Detection value of fruit establish the temperature fluctuation characteristic curve of sample fruit, are then obtained by least square method calculating
Obtain curve of approximation equation as follows:
Y0=α T+ β
Wherein, Y0For Quality Detection value, α is the slope of curve of approximation equation, and T is temperature data, and β is constant；
The temperature data that spherical fruit to be detected is obtained by temperature sensor is substituted into above-mentioned curve of approximation equation to obtain
To Quality Detection value Y0, 25 DEG C of setting are normal temperature, by Quality Detection value Y0Substitute into the Quality Detection value after following formula is corrected
Y:
Y=Y0-α(T-25)
Wherein, Y is the Quality Detection value after correction.
The sample fruit and the spherical fruit of detection are similar fruit.
The present invention provides a kind of height change correcting schemes, correct the level height of fruit automatically using spring, reduce
The deviation of two sides irradiation light optical axis.When supporting table is acted on by the downward pressure of different size of spherical fruit, due to bullet
The resilient support of spring acts on, so that the different size of spherical fruit center being placed in supporting table is close to optical axis；The light
Axis is the central junction line of two illumination regions.
Height correction working principle: take apple as an example, different apple diameters are different, vary in weight.Different weight is corresponding
Spring decrement it is different, its body-centered of the apple for keeping volume different is approximately kept at sustained height, therefore horizontal side light source irradiates
Point does not have excessive offset, can improve detection performance.
According to " National Standard of the People's Republic of China's fresh apple " (GB/T 10651-2008), by fruit diameter (maximum cross section
Diameter) apple is divided into large-scale fruit and middle-size and small-size fruit, large-scale fruit fruit diameter >=65mm (excellent, first-class fruit >=70mm, second-class fruit >=
65mm), middle-size and small-size fruit fruit diameter >=65mm (excellent, first-class fruit >=65mm, second-class fruit >=55mm).
The present invention is suitable for large-scale fruit and most middle-size and small-size fruits.
Apple density p=0.95g/cm3, apple volumeKnow apple weight m ≈ 0.497R3。
Determine spring rate: the corresponding each spring pressure of four springs of the apple of spring free length 35mm, 65mm fruit diameter
Contracting amount is 5mm, and the rigidity k ≈ 0.0669N/mm known to F=-kx, F are spring pressure, and x is amount of spring compression；Bullet
Spring decrement can increase as apple weight increases.Spring is chosen according to the spring rate being calculated.Final choice is suitable
Spring ensure its equilbrium position of various sizes of apple near sustained height, make the left and right sides incident light axis because of fruit size
Variation and the deviation that generates minimizes.
Beneficial effects of the present invention:
The present invention is directed to the detection height change of fruit of different sizes, gives a kind of auto-correction method；For detection
Rectification building-out has been done in influence of the Shi Wendu to measured value.
Because of error caused by height change and temperature change when the present invention reduces fruit detection, the precision of detection is improved,
Fruit internal quality index can be quickly obtained, and is operated easy to carry.
Detailed description of the invention
Fig. 1 is functional block diagram of the present invention
Fig. 2 is top view and sectional view of the invention, and (a) is schematic top plan view, (b) is diagrammatic cross-section.
Fig. 3 is optical detecting unit schematic diagram.
Fig. 4 is overall structure of the present invention.
Fig. 5 is shell fruit placement position structural schematic diagram in the present invention.
Fig. 6 is fruit support position placement position structural schematic diagram in the present invention.
Fig. 7 is the top view and isometric view at fruit support position of the present invention, and (a) is top view, (b) regards for isometric
Figure.
Fig. 8 is schematic diagram of internal structure of the present invention.
Fig. 9 is back schematic diagram of the present invention.
In figure: 1, spherical fruit, 2, optical axis, 10, shell, 20, illumination region, 30, light reception element, 31, detection probe, 32,
Transmission fiber, 33, entrance aperture, 34, collimating mirror, 35, grating, 36, focus lamp, 37, photoelectric sensor, 40, temperature sensor,
50, supporting table, 51, hollow cylinder II, 60, fixed ring, 70, switch button, 80, data transmission interface, 90, power interface,
101, power input unit, 102, data transmission storage element, 103, optical detecting unit, 104, calculation control unit, 105, temperature
Spend measuring unit, 106, display input unit, 107, hollow cylinder I, 108, spring, 109, liquid crystal display, 110, input press
Button.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
It is shown as shown in Figure 1 for the operating mode of whole equipment, power input unit 101 is powered to whole equipment, light inspection
It surveys unit 103 and light splitting detection, data and the collected temperature data one of temperature measurement unit 105 is carried out to collected transmitted light
Incoming calculation control unit 104 is played, the data re-transmission after 104 analysis correction of calculation control unit gives data transport storage cell
102 and display input unit 106.
As shown in Fig. 2, the present invention includes shell 10, illumination region 20, light reception element 30, fixed ring 60；10 upper surface of shell
Equipped with liquid crystal display 109 and input button 110；Equipped with circular shape slot, 10 upper surface of shell and positioned at circle among shell 10
Shape stepped groove two sides are equipped with illumination region 20.
As shown in figure 5, being distributed along the circumference with four hollow cylinders I 107, Mei Gekong in the first order stepped groove slot of stepped groove
The spring 108 that hollow cylinder I is stretched out in upper end is respectively arranged in heart cylinder I, first order stepped groove groove center is equipped with light reception element 30
With temperature sensor 40.
As shown in Figure 6 and Figure 7, supporting table 50 is installed, supporting table 50 is intermediate for placing right above light reception element 30
The column annular table of spherical fruit 1, supporting table 50 circumferentially face be evenly equipped with four it is corresponding with I 107 position of hollow cylinder hollow
Cylinder II 51, hollow cylinder II 51 are nested in I 107 upper end of hollow cylinder, and the spring 108 inside hollow cylinder I 107 is by resisting
II 51 upper end of hollow cylinder supports upwardly supporting table 50.
As shown in figure 4, the second level stepped groove slot inner wall of stepped groove is embedded with fixed ring 20, divide at equal intervals in fixed ring 20
It is furnished with elastic piece of the muti-piece towards 20 center of fixed ring, spherical 1 bottom of fruit is supported by muti-piece elastic piece.When spherical fruit 1
When being put into, elastic piece is close to spherical fruit 1 and guarantees that it is secured firmly in supporting table 50.
It is illustrated in figure 3 optical detecting unit structure of the invention, including entrance aperture 33, collimating mirror 34, grating 35, focus lamp
36 and photoelectric sensor 37；Entire optical detecting unit is located at device bottom and is connected by transmission fiber 32 with light reception element 30.Thoroughly
It penetrates light to reflect after the entrance of entrance aperture 33 by collimating mirror 34, reflected light passes through 36 optically focused of focus lamp after the light splitting of grating 35, most
The transfer spectral information that obtains is to calculation control unit 104 after being handled afterwards by photoelectric sensor 37.
Be illustrated in figure 8 portable device internal structure, further include positioned at 10 bottom of shell power input unit 101,
Data transport storage cell 102, optical detecting unit 103, calculation control unit 104, temperature measurement unit 105 and display input are single
Member 106；Power input unit 101 is whole device power supply；Optical detecting unit 103, temperature measurement unit 105, data transmission are deposited
Storage unit 102 and display input unit 106 are connected with calculation control unit 104.
It is illustrated in figure 9 back schematic diagram of the invention, is dispersed with switch button 70, data transmission interface in lower back
80 and power interface 90, switch button 70 is used to control the open and close of whole equipment；Data transmission interface 80 and data are transmitted
Data are transmitted to outside after the connection of storage unit 102；Power input unit 101 carries out equipment after being connected by power interface 90
Power supply.
Embodiment:
Apple is placed in 50 top of supporting table, apple side is close to by elastic piece and guarantees that it is secured firmly to supporting table 50
On, temperature sensor acquires the temperature data of apple, and temperature data is transmitted to calculating control by temperature measurement unit 105
Unit 104；Halogen lamp in illumination region 20 is irradiated from apple two sides, and transmitted light is received by light reception element 30, light reception element
30 transmitted lights received are transmitted to optical detecting unit 103 through detection probe 31 and transmission fiber 31, and optical detecting unit 103 is to saturating
It penetrates light and carries out light splitting detection and the transfer spectral information that will acquire to calculation control unit 104, calculation control unit 104 is according to light
Spectrum information obtains spherical 1 Quality Detection value of fruit；Calculation control unit 104 is according to temperature data to quality measurements rectification building-out
Quality Detection value after being corrected afterwards, and the quality measurements after correction are exported to data transport storage cell 102 and shown
Show that input unit 106, data transport storage cell 102 store data, data are shown in liquid by display input unit 106
On crystal display screen 109.
Claims (7)
1. a kind of fruit internal quality detection height adaptive and temperature correction device, it is characterised in that: including shell (10), hair
Light portion (20), light reception element (30), fixed ring (60)；Shell (10) upper surface is equipped with liquid crystal display (109) and input button
(110)；Illumination region is equipped with equipped with circular shape slot, shell (10) upper surface among shell (10) and positioned at circular shape slot two sides
(20)；It is distributed along the circumference with four hollow cylinders I (107) in the first order stepped groove slot of stepped groove, in each hollow cylinder I
The spring (108) of hollow cylinder I is stretched out equipped with upper end, first order stepped groove groove center is equipped with light reception element (30) and temperature passes
Sensor (40)；It is equipped with supporting table (50) right above light reception element (30), supporting table (50) is intermediate for placing spherical fruit
(1) column annular table, circumferentially face is evenly equipped with four open circles corresponding with hollow cylinder I (107) position to supporting table (50)
Column II (51), hollow cylinder II (51) are nested in hollow cylinder I (107) upper end, the internal spring (108) of hollow cylinder I (107)
Supporting table (50) are supported upwardly by resisting hollow cylinder II (51) upper end；The second level stepped groove slot inner wall of stepped groove is embedded in
Have fixed ring (20), fixed ring (20) inner wall is spacedly distributed the elastic piece for having muti-piece towards fixed ring (20) center, spherical water
Fruit (1) bottom is supported by muti-piece elastic piece.
2. a kind of fruit internal quality detection height adaptive according to claim 1 and temperature correction device, feature
It is: is equipped with luminous halogen lamp inside the illumination region (20), halogen lamp carries out light irradiation from spherical fruit (1) two sides；
Light reception element (30) is located at the underface of spherical fruit (1) placement position, is made of receiving transducer (31) and transmission fiber (31),
For receiving transmitted light；Temperature sensor (40) is used to acquire the temperature of spherical fruit (1).
3. a kind of fruit internal quality detection height adaptive according to claim 1 and temperature correction device, feature
It is: further includes the power input unit (101) for being located at shell (10) bottom, data transport storage cell (102), light detection list
First (103), calculation control unit (104), temperature measurement unit (105) and display input unit (106)；Data transmission storage is single
First (102), optical detecting unit (103), calculation control unit (104), temperature measurement unit (105), display input unit
(106), illumination region (20), light reception element (30) and temperature sensor (40) are connected with power input unit (101), and power supply is defeated
Enter unit (101) for whole device power supply；Optical detecting unit (103), temperature measurement unit (105), data transport storage cell
(102) it is connected with calculation control unit (104) with display input unit (106)；Temperature sensor is by collected temperature number
Calculation control unit (104) are transmitted to according to by temperature measurement unit (105)；The transmitted light that light reception element (30) receives is through passing
It loses fine (31) to be transmitted to optical detecting unit (103), optical detecting unit (103) to transmitted light carries out light splitting detection and will acquire
Transfer spectral information to calculation control unit (104), calculation control unit (104) obtains spherical fruit (1) according to spectral information
Quality Detection value；Calculation control unit (104) according to temperature data to being corrected after quality measurements rectification building-out after
Quality Detection value, and the quality measurements after correction are exported to data transport storage cell (102) and display input unit
(106), data transport storage cell (102) stores data, shows that data are shown in liquid crystal by input unit (106)
In display screen (109).
4. a kind of fruit internal quality detection height adaptive according to claim 3 and temperature correction device, feature
Be: the Quality Detection value of the spherical fruit (1) is pol value, acidity value.
5. a kind of fruit internal quality detection height adaptive according to claim 3 and temperature correction device, feature
Be: the calculation control unit (104) is according to temperature data to the quality after being corrected after quality measurements rectification building-out
The process of detected value specifically: the temperature data and Quality Detection value for obtaining sample fruit by experiment detection first, according to sample
The temperature and Quality Detection value of savoring fruit establish the temperature fluctuation characteristic curve of sample fruit, are then calculated by least square method
Obtain curve of approximation equation as follows:
Y0=α T+ β
Wherein, Y0For Quality Detection value, α is the slope of curve of approximation equation, and T is temperature data, and β is constant；
Spherical fruit (1) to be detected is substituted into above-mentioned curve of approximation equation by the temperature data that temperature sensor (40) obtain
Obtain Quality Detection value Y0, 25 DEG C of setting are normal temperature, by Quality Detection value Y0Substitute into the Quality Detection after following formula is corrected
Value Y:
Y=Y0-α(T-25)
Wherein, Y is the Quality Detection value after correction.
6. a kind of fruit internal quality detection height adaptive according to claim 1 and temperature correction device, feature
It is: when supporting table (50) is acted on by the downward pressure of different size of spherical fruit (1), due to spring (108)
Resilient support effect, so that different size of spherical fruit (1) center being placed on supporting table (50) is close to optical axis (2)；
The optical axis (2) is the central junction line of two illumination regions (20).
7. a kind of fruit internal quality detection height adaptive according to claim 1 and temperature correction device, feature
Be: the elastic piece is using the material preparation being readily bent under external force.
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| CN201910458412.2A CN110108650A (en) | 2019-05-29 | 2019-05-29 | Fruit internal quality detects height adaptive and temperature correction device |
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| CN201910458412.2A CN110108650A (en) | 2019-05-29 | 2019-05-29 | Fruit internal quality detects height adaptive and temperature correction device |
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| KR20110006143A (en) * | 2009-07-13 | 2011-01-20 | 한국산업기술대학교산학협력단 | Portable non-destructive apparatus for measuring internal quality and method thereof |
| CN102866117A (en) * | 2012-09-10 | 2013-01-09 | 江苏大学 | Portable fruit internal quality nondestructive detection device and method |
| CN102890057A (en) * | 2012-10-24 | 2013-01-23 | 华东交通大学 | Portable quality detection device for simultaneously detecting sugar degree and hardness of fruit |
| CN103487396A (en) * | 2013-09-20 | 2014-01-01 | 华东交通大学 | Near-infrared fruit sugar degree nondestructive detecting device with adjustable illumination parameters |
| CN109156855A (en) * | 2018-08-24 | 2019-01-08 | 杨建州 | Fruit surface fruit wax floating device after a kind of waxing of fruit shop |
| CN210720136U (en) * | 2019-05-29 | 2020-06-09 | 浙江理工大学 | Inside quality of fruit detects high self-adaptation and temperature correcting unit |
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