CN106770067A - Portable kiwi fruit sugar the cannot-harm-detection device - Google Patents
Portable kiwi fruit sugar the cannot-harm-detection device Download PDFInfo
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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
- G01N21/59—Transmissivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/061—Sources
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/08—Optical fibres; light guides
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Abstract
The invention discloses a kind of portable kiwi fruit sugar the cannot-harm-detection device, belong to agricultural product spectrum field of non destructive testing.The technical problem of solution is to provide a kind of pol the cannot-harm-detection device stablized suitable for Kiwi berry and testing result.The present invention includes shell, main control module, fan, light source module, thermal baffle, spectral detection module, probe module, measurement button, display screen, power switch, rechargeable battery, charging inlet.The light that light source module sends is injected inside Kiwi berry by probe module, and diffusing transmission occurs；Diffuse transmission light is conducted to spectral detection module by probe module, and master control module controls spectral detection module obtains Vis/NIR data；Main control module will obtain the kiwi sugar angle value and show on a display screen after data processing.The present invention can be used for the classification of Kiwi berry postpartum, it can also be used to which Growth of Kiwifruit Fruit is monitored, and be favorably improved kiwi fruit sugar detection efficiency, increase economic benefit.
Description
Technical field
The present invention relates to agricultural product spectrum field of non destructive testing, more particularly to a kind of kiwi fruit sugar the cannot-harm-detection device.
Background technology
Kiwifruit fruit exquisiteness succulence, it is nutritious, it is loved by people.China's Kiwi berry cultivated area the first in the world.
Pol is the important Internal quality index of Kiwi berry, is not only the important evidence that consumer selects Kiwi berry, or fruit growth
Monitoring and the Main Basiss of postpartum classification.Traditional kiwi fruit sugar measurement is measured using saccharometer, first by Kiwi berry during measurement
Sample is squeezed the juice, and is then instilled detection in saccharometer, and detection can damage Kiwi berry, therefore, it is possible to Non-Destructive Testing kiwi fruit sugar
Device turn into the urgent need to.
Using Vis/NIR prediction kiwi fruit sugar method have easily and fast, lossless, with low cost, ring
The characteristics of border is friendly.In maturation, organic molecule content can change Kiwi berry as maturity changes, pulp and pericarp
Color can also change with maturity, by scanning its visible spectrum, can obtain comprising Kiwi berry pulp and pericarp
The spectroscopic data of color characteristic information.The sum of fundamental frequencies of hydric group vibration and frequency multiplication at different levels near infrared spectrum and organic molecule
Uptake zone is consistent, and these hydric group absorption frequency characteristics are strong, influenceed small by molecule internal and external environment, in near-infrared spectra area ratio
The sample spectra characteristic of middle infrared range is more stable.By scanning near infrared spectrum, can obtain comprising kiwi fruit sugar feature
The spectroscopic data of information.Using the Vis/NIR data and pol data of Kiwi berry sample, calculated by mathematical modeling
Method, founding mathematical models, you can realize the prediction of kiwi fruit sugar.
" research of Kiwi berry near infrared spectrum Dynamic Non-Destruction Measurement "（Chen Xiangwei；Xibei Univ. of Agricultural ＆ Forest Science ＆ Technology doctoral candidate
Paper）One the article pointed out：" use 12000~4000cm-1Near infrared spectrum to different sources, various orchards, different storage
Phase, the detection of the soluble solid content of differing maturity Kiwi berry are feasible." in pol 85% or so composition be can
Dissolubility solid content, therefore often with soluble solid content reflection pol.This article is also indicated that：" 11991.6~
5446.2cm-1It is in significant linear correlation in spectral region, between near-infrared diffusing reflection spectrum and kiwi fruit sugar content ".Should
Article is well explained to utilize Kiwi berry near infrared spectrum data and pol data, sets up kiwi fruit sugar forecast model
Detailed process.PLS is based in text（PLS）The kiwi fruit sugar forecast model of foundation, coefficient of determination R2It is 93.65,
Forecast set root-mean-square error RMSEP is 0.656；Error back propagation learning algorithm is based in text（BP）The ANN of foundation
Network model, coefficient of determination R2It is 89.8273, forecast set root-mean-square error RMSEP is 0.3256.
" research of the kiwi fruit sugar lossless detection method based near infrared spectrum "（Song Sizhe；Northwest agriculture and forestry science and technology is big
Learn M Sc thesis）One the article pointed out：" equator pol is 0.972, carpopodium pol with the correlation R2 of the total pol of Kiwi berry
Pol correlation R2 total with Kiwi berry is 0.945, and fruit calyx pol is 0.958 with the correlation R2 of Kiwi berry overall brix, finally
It is the test position for carrying out near-infrared Non-Destructive Testing kiwi fruit sugar to choose equator." be described in detail using an inclined most young waiter in a wineshop or an inn in text
Multiplication（PLS）, SVMs（SVM）And least square method supporting vector machine（LSSVM）Three kinds of Mathematical Modeling Methods, coordinate
Savitzky-Golay smoothing methods（SG）With standard normal change of variable（SNV）Two kinds of preprocess methods and disappear without information variable
Division（UVE）With successive projection algorithm（SPA）Two kinds of characteristic wavelength extraction algorithms set up the detailed of kiwi fruit sugar forecast model
Process.
“Vis/NIR spectroscopy and chemometrics for the prediction of soluble
solids content and acidity (pH) of kiwifruit”（Ali Moghimi etc., Biosystems
Engineering）One the article pointed out：Using Vis/NIR prediction Kiwi berry inside quality parameter be it is feasible, for example
Soluble solid content and pH contents；Because Vis/NIR detection technique has, detection time is short, low cost spy
Point, is feasible using the technological development fruit internal quality feature non-destructive detecting device；Also indicated that in text：Using principal component point
Analysis method（PCA）And PLS（PLS）The coefficient correlation of the Kiwi berry soluble solid forecast model of foundation is 0.93,
Forecast set root-mean-square error RMSEP is 0.259.
Although Vis/NIR technology achieves many achievements in kiwi fruit sugar Non-Destructive Testing research,
The method is not applied to also the portable kiwi fruit sugar the cannot-harm-detection device in production practices.Traditional spectral detection dress
Put volume big, expensive, be suitable only for scientific research institutions, enterprise etc. and use.Meanwhile, the complicated structure of kiwifruit fruit increased out
Send out the difficulty of Kiwi berry the cannot-harm-detection device.There are tiny spot-like projections on Kiwi berry surface, and surface roughness is very big and has lint fine
Dimension covering, the length of fine animal fibre, thickness, soft or hard and quantity are relevant with Kiwifruit Cultivars；Kiwifruit fruit internal structure is answered
It is miscellaneous, have radially radially spaced light floccule between pulp, on fruit axis a large amount of seeds of life；Kiwi fruit
The pol content of real each several part there is also difference.Kiwi berry visible/near infrared is gathered using traditional standard diffusing reflection fibre-optical probe
Light time spectrum, the fibre-optical probe generally only has single measurement optical fiber and fibre diameter is thinner, easily receives Kiwi berry structure influence, spectrum number
Poor according to stability, repeatedly the result repeatability of measurement is relatively low near same measurement point；Meanwhile, use traditional diffusing reflection measuring method
During measurement, fibre-optical probe is at regular intervals with Kiwi berry, it is seen that though/near infrared spectrum can penetrate Kiwi berry pericarp and reach fruit
The spectroscopic data that pericarp directly reflects in inside, but the spectroscopic data for obtaining is in the great majority；If fibre-optical probe is close into Kiwi berry
During surface, influence of the Kiwi berry surface texture to spectroscopic data will increase, and spectroscopic data stability declines.
Chinese patent notification number CN 205643156U, October 12 2016 day for announcing, patent name is " a kind of portable
Formula grape pol near-infrared detection apparatus ", that application discloses " a kind of portable glucose degree near-infrared detection apparatus, including
Target is grape（0）；It is characterized in that：It is provided with shell（1）, Arm frameworks embedded main board（2）, touch display screen
（3）, LED switch（4）, power button（5）, start buttons（6）, supplying cell（7）With near-infrared sampling module（8）；Its position
Put is with annexation：In shell（1）The front upper right corner open up circular hole install near-infrared sampling module（8）, adopted in near-infrared
Egf block（8）Lower section is provided with LED switch（4）, power button（5）With start buttons（6）, in shell（1）Front keep left
Inlay touch display screen（3）, in shell（1）The embedded main board for being internally provided with Arm frameworks（2）And supplying cell（7）；Touch
Touch display screen（3）, LED switch（4）, power button（5）, start buttons（6）, supplying cell（7）With near-infrared sampling module
（8）Near-infrared light source（8.3）And detector（8.4）Respectively with the embedded main board of Arm frameworks（2）Electrical connection." but should
It is the special purpose device of grape pol detection design that device is, is suitable only for detecting grape pol, detects incompetent for kiwi fruit sugar
It is power；Described in the device specific embodiment：" detector 8.4 is a kind of spectral collection device, and critical piece is InGaAs/
LnAs photodiodes, convert optical signals into electric signal." detector critical piece is InGaAs/lnAs photodiodes, should
Class diode is easily influenceed by operating ambient temperature, and testing result stability is difficult to ensure that；The device is box-shaped device, is made hand-held
, it is necessary to keep the device level, stabilization, there is certain use inconvenience in the used time.
Chinese patent notification number CN 203732438U, the day for announcing 2014 year 07 month 23, patent name is a kind of portable
Near-infrared detection apparatus, that application discloses a kind of " portable near-infrared detection apparatus, it is characterised in that be by display
（1）, detection means（2）, near-infrared light source（3）And microcontroller（4）Composition；The present apparatus be in pistol shape, be additionally provided with device by
Key（5）；Near-infrared light source（3）By detection means（2）Sample is scanned, detection means（2）Scanning signal is input into micro-
Controller（4）In, microcontroller（4）Signal to receiving is analyzed and is displayed in display after processing（1）On." patent
The technical problem to be solved is：" the larger problem that should not be carried of conventional apparatus." by the background technology introduction of the patent：It is " near red
Outer detection device for food quality is according to food（Meat, edible oil, dairy products, cereal and fruits and vegetables etc.）In various representational have
Machine composition is in the optical absorption characteristic of near infrared spectrum region, the difference of the most strong absorbing wavelength of each composition, absorption intensity and grain
Proportional relation between food organic content, by the way that oneself knows chemical analysis content with the recurrence point of its near infrared ray result to sample
Analysis, it is established that calibration equation, you can the unknown sample component content to same similar type is estimated." learn, the patent
" conventional apparatus " in the technical problem to be solved refer to near-infrared detection device for food quality.But near-infrared food quality is examined
Survey device species is various, and measuring principle is not quite similar, and is not provided with the specific embodiment description of the patent a kind of complete
Implementation method, explicitly stated is not given to detection object and its Testing index, also measuring method and measuring principle are not given
Go out to clearly state, still suffer from many an open questions；Food variety is various simultaneously, its composition, shape, size, composition structure
It is not quite similar etc. characteristic, Testing index is various, detection method there is also larger difference, a kind of structure of detection means is difficult to adapt to
The measurement of numerous food, various measurement indexes；Therefore, technical scheme cannot solve the kiwi sugar in the present invention described in the patent
Degree Dynamic Non-Destruction Measurement problem.Secondly, the infrared detecting device compact conformation, near-infrared light source and microcontroller can be produced when working
Raw amount of heat, and the infrared detecting device includes photoelectric sensor, when the component works, is easily produced by external temperature influence
Signal drift, needs the operating temperature of particular range during measurement, the patent does not also provide solution to this problem；Display exists
Device right side, user can not observe directly display result, to using making troubles.
Chinese patent notification number CN 2779390Y, the day for announcing 2006 year 05 month 10, patent name is " near-infrared fruit
Diffusing reflection detection means is used in sugar and acid degree analysis ", that application discloses " analysis of near-infrared acidity of fruit confection is detected with diffusing reflection and filled
Put, it is characterised in that be made up of near infrared detection optical fiber, structure of fiber_optic, fruit tumbler and base, wherein near infrared detection
Optical fiber（2）Optical fiber received by light source input optical fibre and signal combine and constitute, it is a furcation area optical fiber, a jag of optical fiber,
Infrared light supply is connect respectively（1）And detector（12）, infrared light supply（1）And detector（12）Set mounted in a FT-IR spectral detection
It is standby（13）The inside；Other end is the fibre-optical probe of same shape shaft（9）, fibre-optical probe（9）Center be light source input optical fibre, week
Enclose for signal receives optical fiber, fruit tumbler is installed in base（3）On can control fruit rotate grip device." should
Apply for the structure without explanation near infrared detection fibre-optical probe part, cannot learn that the near infrared detection optical fiber is from this application
The no requirement for meeting the collection of Kiwi berry ir data；The device is only completed spectroscopic data detection work, in addition it is also necessary to by data
It is sent in computer data acquisition system and is further analyzed, it is impossible to immediately arrives at detection sample pol data, and tie
Structure is complicated, it is impossible to portable use.
In sum, the mesh of kiwi fruit sugar Non-Destructive Testing can be reached using Vis/NIR technology at this stage
, but the portable kiwi fruit sugar the cannot-harm-detection device during the method not to be applied to production practices；Simultaneously because Mi
Monkey peach complex structure, causes the measurement result stability of traditional standard diffusing reflection optical fiber poor, it is impossible to for Kiwi berry it is visible/it is near red
The collection of outer light data；Portable detector can not solve asking for kiwi fruit sugar Non-Destructive Testing described in presently relevant patent
Topic, and these devices do not account for sonde configuration to measuring the applicability of sample and the stability of measurement result, do not consider yet
Influence of the heat that the devices such as light source are produced to spectrum detection device, measurement result stability is difficult to ensure that.
The content of the invention
It is lossless that the technical problem to be solved in the present invention is to provide a kind of pol suitable for Kiwi berry and testing result stabilization
Detection means.
Technical scheme is as follows：
Portable kiwi fruit sugar the cannot-harm-detection device, including shell, main control module, light source module, spectral detection module, probe
Module, measurement button, display screen, power switch, rechargeable battery, charging inlet, above-mentioned main control module respectively with above-mentioned display screen,
Above-mentioned power switch, above-mentioned rechargeable battery, above-mentioned measurement button, above-mentioned light source module, above-mentioned spectral detection module are connected, above-mentioned
Charging inlet is connected with above-mentioned rechargeable battery, and above-mentioned probe module includes probe, detection optical fiber, lighting fiber, and above-mentioned probe leads to
Cross above-mentioned lighting fiber to be connected with above-mentioned light source module, above-mentioned probe is by above-mentioned detection optical fiber and above-mentioned spectral detection module phase
Even.
The spectrum that above-mentioned spectral detection module is obtained is Vis/NIR.Above-mentioned light source module is to send full light
Compose the halogen tungsten lamp of light.
Above-mentioned detection optical fiber is silica fibre, and the sound end outside of the detection optical fiber is surrounded by metal inner cylinder, the metal inner cylinder
In collector lens is fixed with by collector lens trim ring, the focus of the collector lens is located at the sound end end face of above-mentioned detection optical fiber
On, the other end of above-mentioned detection optical fiber is connected by detection optical fiber joint with above-mentioned spectral detection module.
Above-mentioned lighting fiber is made up of silica fibre boundling, and the sound end of the lighting fiber is arranged in a ring in above-mentioned metal
Inner cylinder outside and outer layer is surrounded by metal outer cylinder, above-mentioned metal inner cylinder end face is higher than above-mentioned metal outer cylinder end face, above-mentioned lighting fiber
Source ends close-packed arrays into column, outside is surrounded by metal shell, and it is saturating that the metal shell is fixed with coupling by coupled lens trim ring
Mirror, the center line of the coupled lens overlaps with the source ends center line of above-mentioned lighting fiber, and above-mentioned lighting fiber passes through above-mentioned gold
Category shell is connected with above-mentioned light source module.
Above-mentioned shell is provided with air vent, and thermal baffle is provided between above-mentioned light source module and above-mentioned spectral detection module,
Above-mentioned light source module rear end is provided with fan, and the fan is connected with above-mentioned main control module, in above-mentioned vent locations and above-mentioned shell
The said fans in portion are corresponding with the position of above-mentioned light source module, and the heat that said fans produce above-mentioned light source module is through above-mentioned
Air vent takes above-mentioned housing exterior to.Above-mentioned spectral detection module is located at the front end of above-mentioned enclosure, away from above-mentioned light source die
Block and above-mentioned main control module.
The similar handgun shape of the profile of above-mentioned shell.Above-mentioned probe module is in addition to the front end of above-mentioned probe is located at above-mentioned shell
Portion, other parts are respectively positioned on above-mentioned enclosure；Above-mentioned probe is located at above-mentioned enclosure foremost, the position class of the probe
It is similar to pistol gun barrel position.The lever of above-mentioned shell has streamlined contour, above-mentioned rechargeable battery is fixed with inside it, under lever
End be fixed with above-mentioned charging inlet, near staff grip above-mentioned lever when the joint of forefinger first be fixed with above-mentioned measurement by
Key, the position of the position of the measurement button similar to pistol trigger.Above-mentioned display location in above-mentioned outer casing back, the display location
The position similar to pistol hammer is put, it is located proximate to user, and region be directly facing user.Above-mentioned power switch is located at above-mentioned
Shell rearmost end, it is adjacent with above-mentioned display screen and positioned at above-mentioned display screen lower section.The inside at above-mentioned shell top position from a left side to
The right side be respectively fixed with above-mentioned power switch, above-mentioned display screen, above-mentioned main control module, said fans, above-mentioned light source module, it is above-mentioned every
Heat shield, above-mentioned spectral detection module, above-mentioned probe module.
During measurement, above-mentioned probe is adjacent to tested Kiwi berry, the light that above-mentioned light source module sends passes through above-mentioned lighting fiber
Injected inside Kiwi berry through Kiwi berry pericarp, light occurs diffusing transmission inside Kiwi berry, diffuse transmission light passes through Kiwi berry pericarp
Conducted to above-mentioned spectral detection module by above-mentioned detection optical fiber, the above-mentioned above-mentioned spectral detection module of master control module controls obtains spectrum
Data.
Above-mentioned main control module will obtain the kiwi sugar angle value and including on above-mentioned display screen after the data processing of acquisition.
The kiwi fruit sugar prediction for needing to use in data handling procedure after setting up in a computer and importeding into above-mentioned main control module
Model, the modeling method of the model is various, mainly there is PLS（PLS）, SVMs（SVM）, error reversely passes
Broadcast learning algorithm（BP）.
Compared with prior art, the advantage of the invention is that：
The above-mentioned spectral detection module above-mentioned light source module of cooperation and above-mentioned probe module can obtain Kiwi berry Vis/NIR Spectroscopy
Spectrum, information content related to kiwi fruit sugar in spectrum increases, and is conducive to improving the precision of prediction of kiwi fruit sugar forecast model；
Above-mentioned lighting fiber is fully injected inside Kiwi berry the light that above-mentioned light source module is produced, and is increased diffuse transmission light and is penetrated model
Enclose, the kiwi fruit sugar information that diffuse transmission light is included increases, spectroscopic data stability is not by Kiwi berry inside labyrinth shadow
Ring；
Above-mentioned probe is provided with above-mentioned collector lens, expands above-mentioned probe measurement scope, and spectroscopic data stability does not receive Kiwi berry table
Face labyrinth influence, increases, the Kiwi berry Vis/NIR number of acquisition into the diffuse transmission light in above-mentioned detection optical fiber
The kiwi fruit sugar information included in increases, and is conducive to improving the precision of prediction of kiwi fruit sugar forecast model；
Above-mentioned probe is close to tested Kiwi berry during due to measurement, and the light in above-mentioned lighting fiber can not be directly anti-by Kiwi berry pericarp
Enter above-mentioned detection optical fiber after penetrating, the diffuse transmission light of pericarp is reduced in the Kiwi berry Vis/NIR of acquisition, pulp it is unrestrained
Transmitted light increases, and pulp pol information content is improved in spectroscopic data, is conducive to improving kiwi fruit sugar forecast model
Precision of prediction；
Therefore, the technical program can improve Kiwi berry Vis/NIR measurement result stability, while improve macaque
The content of pulp pol information, improves pol accuracy of detection in peach Vis/NIR；The technical program is not damaged tested
Kiwi berry, meets kiwi fruit sugar Non-Destructive Testing demand.
Above-mentioned spectral detection module is located at the front end of above-mentioned enclosure, away from above-mentioned light source module and above-mentioned main control module
Deng heating original paper；Above-mentioned thermal baffle is located between above-mentioned light source module and above-mentioned spectral detection module, prevents heat to above-mentioned
Spectral detection module is conducted；The heat that said fans produce above-mentioned light source module is taken to outside above-mentioned shell by above-mentioned air vent
Portion, preventing heat from gathering causes above-mentioned enclosure constant temperature to rise；Therefore, the technical program can be above-mentioned spectral detection
Module provides suitable working environment, it is to avoid heat produces influence to above-mentioned spectral detection module, and measurement result stability is able to
Ensure.
The similar handgun shape of the profile of above-mentioned shell, and the lever with streamlined contour, are easy to user to grip；It is above-mentioned
Rationally, save traditional fiber probe needs the operation of individually fixed probe positions to the position distribution of each part, and above-mentioned in shell
Measurement button is located in people's forefinger scope of activities, and user is singlehanded can to complete measurement operation, and staff will not be hindered when gripping
State the normal work of light source module, said fans, above-mentioned air vent and above-mentioned spectral detection module, measurement result is directly from above-mentioned
Display screen reads.Therefore, the arrangement of each part meets base of principle of human engineering, convenient use person's operation in the present invention.
Built-in rechargeable battery of the present invention, easy to use, compact conformation, compact is easy to carry, and can take the present invention
Band is used in open airs such as field, factories.
Reference
1. shell；1-1. air vents；2. main control module；3. fan；4. light source module；5. thermal baffle；6. spectral detection module；
7. probe module；7-1. pops one's head in；7-1-1. metal outer cylinders；7-1-2. metal inner cylinders；7-1-3. collector lens trim rings；7-1-4. gathers
Optical lens；7-2. detection optical fibers；7-2-1. detection optical fiber joints；7-3. lighting fibers；7-3-1. metal shells；7-3-2. is coupled
Lens trim ring；7-3-3. coupled lens；8. button is measured；9. display screen；10. power switch；11. rechargeable batteries；12. chargings
Mouthful；13. Kiwi berrys.
Brief description of the drawings
Fig. 1 is portable kiwi fruit sugar the cannot-harm-detection device front view；
Fig. 2 is portable kiwi fruit sugar the cannot-harm-detection device left view；
Fig. 3 is portable kiwi fruit sugar the cannot-harm-detection device right view；
Fig. 4 is portable kiwi fruit sugar the cannot-harm-detection device cut-away view；
Fig. 5 is portable kiwi fruit sugar the cannot-harm-detection device probe module front view；
Fig. 6 is sonde configuration figure；
Fig. 7 is the source ends structure chart of lighting fiber；
Fig. 8 is probe fundamental diagram；
Fig. 9 is the circuit diagram of portable kiwi fruit sugar the cannot-harm-detection device；
Figure 10 is the Kiwi berry Vis/NIR figure that portable kiwi fruit sugar the cannot-harm-detection device is obtained.
Specific embodiment
With reference to a preferred embodiments and drawings, the invention will be further described：
As shown in figure 4, portable kiwi fruit sugar the cannot-harm-detection device includes：Shell 1, main control module 2, fan 3, light source module
4th, thermal baffle 5, spectral detection module 6, probe module 7, measurement button 8, display screen 9, power switch 10, rechargeable battery 11,
Charging inlet 12, above-mentioned main control module 2 respectively with above-mentioned power switch 10, above-mentioned display screen 9, above-mentioned rechargeable battery 11, above-mentioned
Measurement button 8, said fans 3, above-mentioned light source module 4, above-mentioned spectral detection module 6 be connected, above-mentioned charging inlet 12 with it is above-mentioned
Rechargeable battery 11 is connected.
Above-mentioned probe module 7 includes probe 7-1, detection optical fiber 7-2, lighting fiber 7-3, above-mentioned probe 7-1 by above-mentioned
Lighting fiber 7-3 is connected with above-mentioned light source module 4, and above-mentioned probe 7-1 is by above-mentioned detection optical fiber 7-2 and above-mentioned spectral detection mould
Block 6 is connected.The front view of above-mentioned probe module 7 is as shown in Figure 5.The structure chart of above-mentioned probe 7-1 is as shown in Figure 6.Above-mentioned illumination
The source ends structure chart of optical fiber 7-3 is as shown in Figure 7.
The circuit diagram of portable kiwi fruit sugar the cannot-harm-detection device is as shown in Figure 9.
Above-mentioned main control module 2 selects Raspberry Pi Zero development boards, and main control chip is the Botong of ARM11 frameworks
BCM2835 chips.The development board provides 40 GPIO interfaces, including two groups of SPI interfaces, two 5V power supply interfaces, one
3.3V power supply interfaces, 5 GND interfaces, 8 common GPIO interfaces.The development board reserves a Micro-USB data-interface.Should
Operating voltage needed for development board is 5V.The development board operating system is the Raspbian operating systems based on linux kernel, program
Development language is Python.
Said fans 3 select JMC 3010-5LS DC 5V minitype axial flow fans.
Above-mentioned light source module 4 selects miniature halogen tungsten bulb, and rated voltage 5V, rated current 1.2A can send full spectrum ripple
The light of scope long.The light source module 4 is connected by relay with above-mentioned main control module 2, and the break-make of the relay is by above-mentioned master control
Module 2 is controlled.
From the aerogel plate with good effect of heat insulation, thickness is 10mm to above-mentioned thermal baffle 5.
Above-mentioned spectral detection module 6 selects Ocean Optics STS modules, coordinates the above-mentioned light source die of full spectral band
Block 4 can obtain the spectroscopic data of 600-1100nm, and spectral detection scope is related to visible/near infrared wave band.Sampling number is 1024,
It is favorably improved accuracy of detection.The module operating temperature：0 ~ 50 DEG C, fibre-optical splice is SMA905 joints, data and power supply interface
It is Micro-USB interfaces, the module is connected by Micro-USB data wires with above-mentioned main control module 2.
Above-mentioned measurement button 8 selects touch-switch, is connected with above-mentioned main control module 2 with after a 0.1uF electric capacity parallel connection, real
Existing hardware eliminates key jitter.
Above-mentioned display screen 9 selects 1.3 inches of display screens of OLED 12864, and with compact, itself sends out the display screen 9
Light, the characteristics of display content is clear, can use under high light direct projection, can also be used in the case of night insufficient light.This shows
Display screen 9 is connected by the SPI interface in above-mentioned main control module 2 with above-mentioned main control module 2.
Above-mentioned power switch 10 selects self-lock switch.
Above-mentioned rechargeable battery 11 selects 18650 type Li-Ion rechargeable batteries.
Above-mentioned charging inlet 12 selects Micro-USB interfaces.
Above-mentioned detection optical fiber 7-2 is a silica fibre, and the sound end outside of detection optical fiber 7-2 is surrounded by metal inner cylinder 7-
1-2, collector lens 7-1-4, above-mentioned collector lens trim ring are fixed with metal inner cylinder 7-1-2 by collector lens trim ring 7-1-3
The focus of 7-1-3 inner circles a diameter of 3mm, above-mentioned collector lens 7-1-4 is located on the sound end end face of above-mentioned detection optical fiber 7-2,
The other end of above-mentioned detection optical fiber 7-2 is connected by detection optical fiber joint 7-2-1 with above-mentioned spectral detection module 6, the detection light
Fine joint 7-2-1 selects SMA905 fibre-optical splices, the joint with above-mentioned spectral detection module 6 to match.
Above-mentioned lighting fiber 7-3 is made up of silica fibre boundling, and the sound end of lighting fiber 7-3 is arranged in a ring in upper
State metal inner cylinder 7-1-2 outsides and outer layer is surrounded by metal outer cylinder 7-1-1, above-mentioned metal inner cylinder 7-1-2 end faces are higher than above-mentioned metal
The difference of the inside and outside circular diameter of the sound end annular of outer barrel 7-1-1 end faces 0.5mm, above-mentioned lighting fiber 7-3 is 4mm, above-mentioned illumination
The difference of circular diameter is 4mm in the interior circular diameter and above-mentioned collector lens trim ring 7-1-3 of the sound end annular of optical fiber 7-3.Above-mentioned photograph
Into column, outside is surrounded by metal shell 7-3-1 to the source ends close-packed arrays of Mingguang City fibre 7-3, and metal shell 7-3-1 is saturating by coupling
Mirror trim ring 7-3-2 is fixed with coupled lens 7-3-3, the light source of the center line of coupled lens 7-3-3 and above-mentioned lighting fiber 7-3
End center line is overlapped, and above-mentioned lighting fiber 7-3 is connected by metal shell 7-3-1 with above-mentioned light source module 4.
Above-mentioned shell 1 is provided with air vent 1-1, is provided with above-mentioned between above-mentioned light source module 4 and above-mentioned spectral detection module 6
Thermal baffle 5, the rear end of above-mentioned light source module 4 is provided with said fans 3, and the fan 3 is connected with above-mentioned main control module 2, above-mentioned ventilation
Hole 1-1 positions are corresponding with the said fans 3 inside above-mentioned shell 1 and the position of above-mentioned light source module 4, and said fans 3 will be upper
The heat for stating the generation of light source module 4 is taken to outside above-mentioned shell 1 through above-mentioned air vent 1-1.Above-mentioned spectral detection module 6 is located at upper
The front end inside shell 1 is stated, away from above-mentioned light source module 4 and above-mentioned main control module 2.
The similar handgun shape of the profile of above-mentioned shell 1.Above-mentioned probe module 7 is above-mentioned except the front end of above-mentioned probe 7-1 is located at
Outside shell 1, other parts are respectively positioned on inside above-mentioned shell 1；Above-mentioned probe 7-1 is located inside above-mentioned shell 1 foremost, should
The position of probe 7-1 is similar to pistol gun barrel position.Above-mentioned probe 7-1 front ends extension elongation is 1cm.The lever of above-mentioned shell 1
Above-mentioned rechargeable battery 11 is fixed with streamlined contour, inside it, lever lower end is fixed with above-mentioned charging inlet 12, be close to
The joint of forefinger first when staff grips above-mentioned lever is fixed with above-mentioned measurement button 8, the position of the measurement button 8 similar to
The position of pistol trigger.Above-mentioned display screen 9 is located at the rear end of above-mentioned shell 1, position of the position of display screen 9 similar to pistol hammer
Put, it is located proximate to user, and region be directly facing user.Above-mentioned power switch 10 is located at the rearmost end of above-mentioned shell 1, and above-mentioned
Display screen 9 is adjacent and positioned at above-mentioned display screen lower section.The inside at the top position of above-mentioned shell 1 is respectively fixed with above-mentioned from left to right
Power switch 10, above-mentioned display screen 9, above-mentioned main control module 2, said fans 3, above-mentioned light source module 4, above-mentioned thermal baffle 5, on
State spectral detection module 6, above-mentioned probe module 7.
During measurement, above-mentioned probe 7-1 is close to tested Kiwi berry, the light that above-mentioned light source module 4 sends is by above-mentioned illumination
Optical fiber 7-3 is injected inside Kiwi berry through Kiwi berry pericarp, and diffusing transmission occurs, and diffuse transmission light is through Kiwi berry pericarp by above-mentioned spy
Light-metering fibre 7-2 is conducted to above-mentioned spectral detection module 6, and above-mentioned main control module 2 controls above-mentioned spectral detection module 6 to obtain spectrum number
According to.Fig. 8 is the fundamental diagram of above-mentioned probe 7-1.Figure 10 is to be obtained using portable kiwi fruit sugar the cannot-harm-detection device
20 Vis/NIR figures of " Xu Xiang " Kiwi berry, can be seen that the Vis/NIR that the device is obtained from figure
Curve distribution is uniform, and variation tendency is similar, can complete Kiwi berry Vis/NIR data collection task.
Above-mentioned main control module 2 will obtain the kiwi sugar angle value and including in above-mentioned display screen 9 after the data processing of acquisition
On.
In order to complete the function of kiwi fruit sugar detection, in addition it is also necessary to set up the kiwi sugar based on Vis/NIR
Degree detection model, modeling method is more, is illustrated with one of which here：
1. modeling data is obtained：
Collection " Hua You ", " Xu Xiang ", " west choosing " three each 40 of Kiwi berry samples of kind, totally 120, each kind is each weekly
10 are chosen, totally 30, each Kiwi berry chooses two measurement points, measurement point position is scanned visible/near in Kiwi berry equator position
Infrared spectrum simultaneously measures pol, and 240 the Vis/NIR data and pol data of measurement point are obtained altogether.Pol is surveyed
Amount is measured using ATAGO PR-101 α saccharometers.Above-mentioned collecting method can increase pol data distribution scope, be conducive to
Improve forecast result of model.
2. glucose prediction model is set up：
In a computer, using MATLAB softwares, sample division methods use random sample division methods（RS）, according to 3:1
Modeling data is divided into training set and forecast set by ratio, uses PLS（PLS）Set up kiwi fruit sugar forecast model.
3. model is imported：
Using PLS（PLS）The glucose prediction model of acquisition can be expressed as：
y=Xβ+ε
Wherein：X is input data matrix, and β is coefficient matrix, and ε is residual matrix, and y is pol value.In a computer, utilize
Python programming languages realize above-mentioned formula and complete to import work by being embedded into above-mentioned main control module 2.Above-mentioned spectrum inspection
The spectroscopic data of the acquisition of module 6 is surveyed as input data matrix X, is entered into above-mentioned main control module 2, can obtained after computing
To y, i.e. kiwi sugar angle value, and it is displayed on above-mentioned display screen 9.
Application method：
1. power switch 10 is pressed；
2. probe 7-1 is close on tested Kiwi berry sample, the selection of measurement point position is Kiwi berry equator position；
3. measurement button 8 is pressed, and waits spectral measurement to complete, the stand-by period is about 2s；
4. the pol value of tested Kiwi berry sample is shown on display screen 9.
Above example be only to of the invention for example, do not constitute the limitation to protection scope of the present invention, it is all
It is that design same or analogous with the present invention is belonged within protection scope of the present invention.
Claims (5)
1. portable kiwi fruit sugar the cannot-harm-detection device, it is characterised in that：Including shell（1）, main control module（2）, light source die
Block（4）, spectral detection module（6）, probe module（7）, measurement button（8）, display screen（9）, power switch（10）, rechargeable battery
（11）, charging inlet（12）；
The main control module（2）Respectively with the power switch（10）, the display screen（9）, the rechargeable battery（11）, it is described
Measurement button（8）, the light source module（4）, the spectral detection module（6）It is connected, the charging inlet（12）Filled with described
Battery（11）It is connected；
The spectral detection module（6）The spectrum of acquisition is Vis/NIR；
The probe module（7）Including probe（7-1）, detection optical fiber（7-2）, lighting fiber（7-3）, the probe（7-1）It is logical
Cross the lighting fiber（7-3）With the light source module（4）It is connected, the probe（7-1）By the detection optical fiber（7-2）With
The spectral detection module（6）It is connected；
The detection optical fiber（7-2）It is silica fibre, the detection optical fiber（7-2）Sound end outside be surrounded by metal inner cylinder（7-
1-2）, the metal inner cylinder（7-1-2）In by collector lens trim ring（7-1-3）It is fixed with collector lens（7-1-4）, the optically focused
Lens（7-1-4）Focus be located at the detection optical fiber（7-2）Sound end end face on, the detection optical fiber（7-2）It is another
End passes through detection optical fiber joint（7-2-1）With the spectral detection module（6）Connection；
The lighting fiber（7-3）It is made up of silica fibre boundling, the lighting fiber（7-3）Sound end it is arranged in a ring in
The metal inner cylinder（7-1-2）Outside and outer layer is surrounded by metal outer cylinder（7-1-1）, the metal inner cylinder（7-1-2）End face is higher than
The metal outer cylinder（7-1-1）End face, the lighting fiber（7-3）Source ends close-packed arrays into column, outside is surrounded by metal
Shell（7-3-1）, the metal shell（7-3-1）In by coupled lens trim ring（7-3-2）It is fixed with coupled lens（7-3-3）,
The coupled lens（7-3-3）Center line and the lighting fiber（7-3）Source ends center line overlap, the lighting fiber
（7-3）By the metal shell（7-3-1）With the light source module（4）Connection；
The light source module（4）With the spectral detection module（6）Between be provided with thermal baffle（5）, the light source module（4）Afterwards
End is provided with fan（3）, the shell（1）It is provided with air vent（1-1）.
2. portable kiwi fruit sugar the cannot-harm-detection device according to claim 1, it is characterised in that：The shell（1）
The similar handgun shape of profile, the shell（1）Lever with streamlined contour, is fixed with the charging inside the lever
Battery（11）, the lever lower end is fixed with the charging inlet（12）, the forefinger the when the lever is gripped near staff
One joint is fixed with the measurement button（8）, the measurement button（8）Position similar to pistol trigger position, it is described
Display screen（9）Positioned at the shell（1）Rear end and user is region be directly facing, the display screen（9）Position hit similar to pistol
The position of hammer, the shell（1）The inside at top position is fixed with the power switch（10）, the display screen（9）, the master
Control module（2）, the fan（3）, the light source module（4）, the thermal baffle（5）, the spectral detection module（6）, institute
State probe module（7）.
3. portable kiwi fruit sugar the cannot-harm-detection device according to claim 1, it is characterised in that：The probe module
（7）In, except the probe（7-1）Front end be located at the shell（1）Outside, other parts are respectively positioned on the shell（1）Inside,
The probe（7-1）Positioned at the shell（1）It is internal foremost, the probe（7-1）Position similar to pistol gun barrel position
Put.
4. portable kiwi fruit sugar the cannot-harm-detection device according to claim 1, it is characterised in that：The spectral detection
Module（6）Positioned at the shell（1）Internal front end, away from the light source module（4）With the main control module（2）.
5. portable kiwi fruit sugar the cannot-harm-detection device according to claim 1, it is characterised in that：The fan（3）
With the main control module（2）Connected 2.
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| CN113109524A (en) * | 2020-01-13 | 2021-07-13 | 攀枝花市创客农业有限公司 | Finished product sweetness taste test equipment for deeply processing dried mangos |
| CN112097908A (en) * | 2020-08-11 | 2020-12-18 | 中国农业大学 | Fruit internal quality detection sensor matched with smart phone and method thereof |
| CN112525855A (en) * | 2020-11-20 | 2021-03-19 | 广东省农业科学院蔬菜研究所 | Detection method and device for quality parameters of pumpkin fruits and computer equipment |
| CN112525855B (en) * | 2020-11-20 | 2021-11-02 | 广东省农业科学院蔬菜研究所 | Detection method and device for quality parameters of pumpkin fruits and computer equipment |
| CN114902947A (en) * | 2022-07-18 | 2022-08-16 | 黑龙江大学 | Cabbage sugar degree on-line monitoring device and drip irrigation regulation and control system realized by adopting same |
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