CN100483109C - Portable fruit sugar content non-destructive detection device capable of weighing - Google Patents
Portable fruit sugar content non-destructive detection device capable of weighing Download PDFInfo
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- CN100483109C CN100483109C CN 200710066689 CN200710066689A CN100483109C CN 100483109 C CN100483109 C CN 100483109C CN 200710066689 CN200710066689 CN 200710066689 CN 200710066689 A CN200710066689 A CN 200710066689A CN 100483109 C CN100483109 C CN 100483109C
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Abstract
This invention discloses one portable fruit sugar lossless test device with weight, wherein, the machine cover board is set with display, keyboard; the shell box is set with print machine; the microprocessor, spectrum device composed of amplifier, A/D converter and weight sensor system; the display, keyboard, print machine and spectrum device and A/D converter are separately connected to the micro processor; the shell is fixed with weight disc and fruit load disc with two inclined holes; the test head is put into fruit load disc inclined hole and spectrum device.
Description
Technical field
The present invention relates to the device of fruit quality Non-Destructive Testing, relate in particular to portable fruit pol the cannot-harm-detection device that a kind of band is weighed.
Background technology
Along with the continuous increase of fruits output and improving constantly of people's living standard, the consumer more and more values for inside quality such as mouthfeel, pol, acidity etc. when choosing fruit, and the pol of fruit is to estimate an important indicator of fruit maturity, fruit quality.And at present to the check of fruit internal quality often based on destructive chemical analysis, as pol anthrone colourimetry or saccharometer, acidity is measured with potential method (pH meter), vitamin content is with colourimetry and high chromatographic determination mutually etc., and these methods exist all that sample preparation is loaded down with trivial details, analysis time long, detect problems such as cost height and accuracy of detection are low.Therefore study portable quick nondestructive detect the fruit internal quality device be realize fruit produce in the scientific management (scientific basis as fruit picking time is the requirement whether fruit arrives the minimum sugar content of high-quality fruit) and the important process of fixing the price according to the quality postpartum and selling.That is that all right is ripe, improve and the less present situation of commercial applications based on the portable the cannot-harm-detection device of present fruit internal quality, the invention provides a kind of intersection based on multinomial technology such as spectral analysis technique, optical fiber sensing technology, stoichiometry learn a skill, most important index pol is developed a kind of portable fruit pol the cannot-harm-detection device with function of weighing as detecting evaluation index in the selection fruit internal quality.
Carried out at present abroad some fundamental researchs on the portable set of fruit internal quality Non-Destructive Testing, developed portable saccharometer based on visible near-infrared line as Japan, pol sensing range 5-30Brix% (pol), detection speed are 3 seconds.In addition, countries such as Germany, Israel and New Zealand have also successively carried out near-infrared spectrum analysis at aspects such as the pol of fruit, defective, degree of ripeness and have studied and developed corresponding portable checkout equipment, but drop into the few of production application, reason mainly be portable detection signal too a little less than, the not high and bad adaptability of the precision of detection.
In Jap.P. NO.09-089767, the mancarried device that utilizes the near infrared detection apple sugar content is described, this method and apparatus is that the fruit reflected light is divided into different wave length after beam splitting system (in the about spectroscope of concave diffraction grating is arranged) light is incided on the photoelectric conversion unit, by calculating absorbance, second differential processing, and set up forecast model with the spectral value at 912nm and 888nm place, think that can be used for the scene that the orchard tree goes up fruit quality detects.But in this structure, the beam split precision is subjected to extraneous factor influences such as (vibration, temperature) easily, thereby accuracy of detection is not high.
The patent NO.02808798.4 that people such as preceding Tian Hong apply for has at home described a kind of hand-held pick-up unit of using as the internal soundness of inspection object of checking by spectral analysis non-destructive ground.Different with above-mentioned technology is that the small-sized spectroscope that is combined into compactly with linear pattern continuous variable interference filter and linear pattern silicon array sensor in this technology has replaced diffraction grating, so more compact structure.Yet in this hand-held pol pick-up unit, the same with above-mentioned patent, adopt the catoptrical mode of detection fruit to detect fruit pol content, this mode can only detect thin skin fruit, owing to the degree of depth that light enters fruit internal is limited, can not correctly reflect fruit internal quality for pachydermia fruit.
Among the patent NO.200510056732.3, a kind of portable nondistructive detector for fruit inner quality has been described at home.In this technology, shine measured object (fruit), and detect, detect the near infrared light of transmission from fruit, and realize fruit quality (water core degree) is detected classification by setting up forecast model with the photoelectric detector that is located at top and bottom with a circle led light source.In this portable nondistructive detector for fruit inner quality, sample window has adopted closed, thereby is subjected to the influence of environment temperature when detecting easily.Though in design, be provided with a temperature sensor near described photoelectric detector and limit, lamp source, in detection model, considered Temperature Compensation, but still there is the low problem of accuracy of detection that causes thus, and improved the cost that installs, in addition because also there is the problem to the influence of fruit quality in the heat radiation difficulty.
In addition, fruit weight is the foundation of fruit metering, and also nobody proposes a kind of portable detector that can realize simultaneously that fruit weight and inside quality pol detect at present.
Summary of the invention
The invention provides portable fruit pol the cannot-harm-detection device that a kind of band is weighed, thereby satisfy the needs that merchandise sales are fixed the price according to the quality and measure simultaneously.
The technical solution used in the present invention is as follows:
Be provided with display, keyboard at main body cabinet one balustrade deching, be provided with printer in the main body cabinet, microprocessor, spectrometer, by the weighing system that amplifier, A/D converter and LOAD CELLS are formed, display, keyboard, printer, spectrometer and converter are connected with microprocessor respectively; The scale pan that is connected with LOAD CELLS is housed on the main body cabinet, the fruit carrier of tested fruit is housed on the scale pan, the fruit carrier has two oblique through holes that point to tested fruit center, two oblique through holes are at 45～and 90 °, the oblique through hole that detection head is put into the fruit carrier is connected with spectrometer, be equipped with on the light source shelf in another outside of main body cabinet can from directly over or side-irradiation to the near-infrared light source of tested fruit, perhaps near-infrared light source is installed in the main body cabinet, shines tested fruit by the luminous source optical fiber in another the oblique through hole that is installed in the fruit carrier.
Be equipped with on the described light source shelf can from directly over or side-irradiation to the near-infrared light source of tested fruit, on the flange in another outside of main body cabinet, the montant that can slide up and down is housed on flange, lever arm is equipped with in the montant end, one end and the lever arm of stiffener are hinged, the other end of stiffener and montant straight trough are hinged, and near-infrared light source is housed on the lever arm.
Described detection head is put into an oblique through hole of fruit carrier, and detection head becomes 25 °～45 ° with tested fruit center.
The structure of described fruit carrier is the concave cylindrical dish, material adopts the black rubber of shading, the plane can be crooked under tested fruit effect and closely contact with tested fruit surface on the fruit carrier, and the light of avoiding near-infrared light source to send directly enters detection head.
The useful effect that the present invention has is: its weight and inside quality pol index that can detect fruit again simultaneously simple in structure, be applied to the field sales of fruit, and can realize fixing the price according to the quality and metering sale simultaneously.
Description of drawings
Fig. 1 is the embodiments of the invention overall schematic;
Fig. 2 is the another embodiment of the present invention overall schematic;
Fig. 3 is another embodiment major part synoptic diagram of pol detection system of the present invention;
Fig. 4 is a major part cut-open view of the present invention;
Fig. 5 is control circuit figure of the present invention;
Fig. 6 is two kinds of working position structural representations of light source shelf of the present invention;
Fig. 7 is that pol detection model of the present invention is to navel orange pol prediction result.
Among the figure: 1, tested fruit; 2, light source shelf; 3, main body cabinet; 4, display; 5, keyboard; 6, base; 7, switch; 8, printer; 9, microcontroller; 10, weighing system; 11, amplifier; 12, A/D converter; 13, LOAD CELLS; 20, montant; 21, lever arm; 22, stiffener; 23, securing member; 24, flange; 25, the scale pan; 101, fruit carrier; 102, near-infrared light source; 103, detection fiber; 104, spectrometer; 105, snoot; 106, luminous source optical fiber; 107, detection head.
Embodiment
Further describe the present invention below in conjunction with the drawings and specific embodiments.
As Fig. 1, Fig. 2 and shown in Figure 5, portable fruit pol the cannot-harm-detection device that band is weighed, be provided with display 4, keyboard 5 at main body cabinet 3 one balustrade dechings, be provided with printer 8 in the main body cabinet 3, microprocessor 9, spectrometer 104 is (as portable optical-fiber type spectrometer INCE-9310MT, contain the CCD detecting device, 2048Pixels), by the weighing system 10 that amplifier 11, A/D converter 12 and LOAD CELLS 13 (as the SPM LOAD CELLS) are formed, display 4, keyboard 5, printer 8, spectrometer 104 and A/D converter 12 are connected with microprocessor 9 respectively; The scale pan 25 that is connected with LOAD CELLS 13 is housed on main body cabinet 3, the fruit carrier 101 of tested fruit 1 is housed on the scale pan 25, fruit carrier 101 has two oblique through holes that point to tested fruit 1 center, two oblique through holes are at 45～and 90 °, the oblique through hole that detection head 107 is put into fruit carrier 101 is connected with spectrometer 104, be equipped with on the light source shelf 2 in another outside of main body cabinet 3 can from directly over or side-irradiation to the near-infrared light source 102 of tested fruit 1, perhaps near-infrared light source 102 is installed in another oblique through hole of fruit carrier 101.Perhaps near-infrared light source 102 is installed in the main body cabinet 3, shines tested fruit 1 by the luminous source optical fiber 106 in another the oblique through hole that is installed in fruit carrier 101.
As Fig. 1, Fig. 2 and shown in Figure 6, be equipped with on the described light source shelf 2 can from directly over or side-irradiation to the near-infrared light source (as halogen tungsten lamp) 102 of tested fruit 1, on the flange 24 in main body cabinet 3 another outsides, the montant 20 that can slide up and down is housed on flange 24, lever arm 21 is equipped with in montant 20 ends, one end and the lever arm 21 of stiffener 22 are hinged, the other end of stiffener 22 and montant 20 straight troughs are hinged, and near-infrared light source 102 is housed on the lever arm 21.When near-infrared light source 102 from directly over shine tested fruit 1, as shown in Figure 1.When near-infrared light source 102 shines tested fruit 1 from the side, as shown in Figure 2.
As shown in Figure 3 and Figure 4, described detection head 107 is put into the oblique through hole that detection head 107 is put into fruit carrier 101, and detection head 107 becomes 25 °～45 degree with tested fruit 1 center.
As shown in Figure 3 and Figure 4, the structure of described fruit carrier 101 is the concave cylindrical dish, material adopts the black rubber of shading, the plane can be crooked under 1 effect of tested fruit and closely contact with tested fruit 1 surface on the fruit carrier 101, and the light that can avoid near-infrared light source 102 to send directly enters detection head 107 influences accuracy of detection.
As shown in Figure 1 and Figure 4, when near-infrared light source 102 from directly over shine tested fruit 1, spectrometer 104 is by detection head 107 and detection fiber 103 acquisition of transmission light.This detection mode is that total transmissivity detects, and the inside quality that is suitable for thin skin or the tested fruit 1 of small size detects.
As Fig. 2, Fig. 4 and shown in Figure 6, by adjusting light source shelf 2, remove stiffener 22 after, by securing member 23 lever arm 21 is installed on the montant 20, and according to the position of the height control near-infrared light source 102 of tested fruit 1.Near-infrared light source 102 shines tested fruit 1 from the side, and spectrometer 104 is by detection head 107 and detection fiber 103 acquisition of transmission light.This detection mode is that half transmitting detects, and the inside quality that is suitable for fruit such as apple, pears, watermelon, muskmelon detects.
As shown in Figure 3, near-infrared light source 102 is installed in the main body cabinet 3, shines tested fruit 1 by the luminous source optical fiber 106 in another the oblique through hole that is installed in fruit carrier 101, and spectrometer 104 is by detection head 107 and detection fiber 103 acquisition of transmission light.This detection mode is that half transmitting detects, and the inside quality that is suitable for fruit such as apple, pears, watermelon, muskmelon detects.
Introduce the course of work below in conjunction with figure:
When fruit 1 is packed fruit carrier 101 into, its weight deforms the LOAD CELLS 13 that is installed between the scale pan 25 and the base 6, and the electric signal that is directly proportional with weight of output, electric signal is after amplifier 11 amplifies, input a/d converter 12 is changed, and the frequency signal that converts to is directly sent into the weight that calculates tested fruit 1 in 8031 microprocessors 9; Open switch 7 simultaneously, near-infrared light source 102 shines on the tested fruit 1 under snoot 105 effects, the transmitted light that spectrometer 104 detects after tested fruit 1 transmission obtains a spectroscopic data, spectroscopic data is imported in 8031 microprocessors 9, microprocessor 9 extracts under the effective wavelength spectral information (as transmissivity) by program and is input in the pol detection model (formula 1), calculates the inside quality pol value of tested fruit 1.Microprocessor 9 shows numerical value to measured value input display 4 on the one hand, on the other hand measured value is imported printer 8, and measured value is printed on the label.
C＝a
0+a
1T(λ
1)+a
2T(λ
2)+a
3T(λ
3) (1)
C represents the fruit pol in the formula, and λ is a wavelength, T (λ
1) be wavelength X
1The transmissivity at=838nm place, T (λ
2) be wavelength X
2The transmissivity at=912nm place, T (λ
3) be wavelength X
3The transmissivity at=982nm place, coefficient a
0, a
1, a
2And a
3By to utilizing progressively linear regression method to try to achieve after the different fruit specimen tests.
C＝8.0246-0.0578T(838)-2.54T(912)+2.1837T(982) (2)
Claims (3)
1, is with the portable fruit pol the cannot-harm-detection device of weighing, it is characterized in that: be provided with display (4), keyboard (5) at main body cabinet (3) one balustrade dechings, be provided with printer (8) in the main body cabinet (3), microprocessor (9), spectrometer (104), by the weighing system (10) that amplifier (11), A/D converter (12) and LOAD CELLS (13) are formed, display (4), keyboard (5), printer (8), spectrometer (104) and A/D converter (12) are connected with microprocessor (9) respectively; The scale pan (25) that is connected with LOAD CELLS (13) is housed on main body cabinet (3), the fruit carrier (101) of tested fruit (1) is housed on the scale pan (25), fruit carrier (101) has two oblique through holes that point to tested fruit (1) center, two oblique through holes are at 45～and 90 °, the oblique through hole that detection head (107) is put into fruit carrier (101) is connected with spectrometer (104), be equipped with on the light source shelf (2) in another outside of main body cabinet (3) can from directly over or side-irradiation to the near-infrared light source (102) of tested fruit (1), perhaps near-infrared light source (102) is installed in the main body cabinet (3), shines tested fruit (1) by the luminous source optical fiber (106) in another the oblique through hole that is installed in fruit carrier (101).
2, portable fruit pol the cannot-harm-detection device that band according to claim 1 is weighed, it is characterized in that: be equipped with on the described light source shelf (2) can from directly over or side-irradiation to the near-infrared light source (102) of tested fruit (1), on the flange (24) in another outside of main body cabinet (3), the montant (20) that can slide up and down is housed on flange (24), lever arm (21) is equipped with in montant (20) end, one end of stiffener (22) and lever arm (21) are hinged, the other end of stiffener (22) and montant (20) straight trough are hinged, and near-infrared light source (102) is housed on the lever arm (21).
3, band according to claim 1 portable fruit pol the cannot-harm-detection device of weighing, it is characterized in that: the structure of described fruit carrier (101) is the concave cylindrical dish, material adopts the black rubber of shading, the last plane of fruit carrier (101) is understood crooked under tested fruit (1) effect and is closely contacted with tested fruit (1) surface, and the light of avoiding near-infrared light source (102) to send directly enters detection head (107).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200710066689 CN100483109C (en) | 2007-01-12 | 2007-01-12 | Portable fruit sugar content non-destructive detection device capable of weighing |
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|---|---|---|---|
| CN 200710066689 CN100483109C (en) | 2007-01-12 | 2007-01-12 | Portable fruit sugar content non-destructive detection device capable of weighing |
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| CN100483109C true CN100483109C (en) | 2009-04-29 |
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Cited By (1)
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| US11270245B2 (en) | 2018-08-07 | 2022-03-08 | Walmart Apollo, Llc | System and method for forecasting deliveries via blockchain smart contracts |
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| US7911597B2 (en) * | 2007-11-23 | 2011-03-22 | Taoyuan District Agricultural Research And Extension Station | Inspection apparatus to simultaneously measure the sugar content and weight of fruit |
| CN101769869B (en) * | 2009-01-07 | 2013-03-27 | 英华达(上海)电子有限公司 | Method and portable device for measuring pol of fruit |
| CN102778444B (en) * | 2012-08-13 | 2014-08-06 | 浙江大学 | Device and method capable of simultaneously measuring multiple index parameters of pear |
| CN103256952B (en) * | 2013-04-18 | 2015-06-03 | 中国农业大学 | Rotating and positioning device used for fruit detection |
| CN103281459A (en) * | 2013-06-06 | 2013-09-04 | 仝晓萌 | Mobile phone capable of measuring sweetness and PH value of fruit |
| CN103487396B (en) * | 2013-09-20 | 2016-04-20 | 华东交通大学 | Near infrared sugar degree the cannot-harm-detection device that a kind of illumination parameter is adjustable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11270245B2 (en) | 2018-08-07 | 2022-03-08 | Walmart Apollo, Llc | System and method for forecasting deliveries via blockchain smart contracts |
| US11816625B2 (en) | 2018-08-07 | 2023-11-14 | Walmart Apollo, Llc | System and method for forecasting deliveries via blockchain smart contracts using hyperspectral computer vision |
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