CN220542752U - Detection probe for collecting spectral information of fruits and vegetables with different fruit diameters - Google Patents
Detection probe for collecting spectral information of fruits and vegetables with different fruit diameters Download PDFInfo
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- CN220542752U CN220542752U CN202321374517.8U CN202321374517U CN220542752U CN 220542752 U CN220542752 U CN 220542752U CN 202321374517 U CN202321374517 U CN 202321374517U CN 220542752 U CN220542752 U CN 220542752U
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- 235000012055 fruits and vegetables Nutrition 0.000 title claims abstract description 67
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Abstract
The utility model belongs to the technical direction of nondestructive detection of agricultural and livestock products in the field of modern agriculture, and particularly relates to a detection probe for collecting spectral information of fruits and vegetables with different fruit diameters, which comprises a characteristic spectrum sensing module, a light source module, a shading module and a shell; the top of the detection probe is an arc-shaped surface; the characteristic spectrum sensing module comprises a sensing port (7) and a collimating lens (2) and is used for being connected with optical-electric signal conversion devices such as a micro multispectral sensor or a micro spectrometer; the light source module comprises a lamp bead (3) and a spotlight cup (1); the shading module comprises a rubber gasket (4) and an arc-shaped gasket (6); the rubber gasket (4) is arranged on the outer ring of the sensing port (7); the arc gaskets (6) are arranged at two sides of the light source module; the top of casing is the arc, and length is moderate, and both ends adopt the chamfer to adapt to the different sizes of fruit vegetables better.
Description
Technical Field
The utility model belongs to the technical direction of nondestructive testing of agricultural and livestock products in the field of modern agriculture, and particularly relates to a detection probe for collecting spectral information of fruits and vegetables with different fruit diameters.
Background
In recent years, people have become more and more concerned about food quality and safety issues. Aiming at the quality detection requirement of fruits and vegetables, a spectrum detection technology becomes a common and reliable detection means. However, the existing fruit and vegetable spectrum detection technology generally has contradiction between accuracy and practicability, mainly because fruits and vegetables with different fruit diameters have huge differences in optical properties, and the traditional spectrum detection probes are difficult to cover detection requirements of all fruit diameters, so that deviation exists in detection results, and evaluation of fruit and vegetable quality is affected.
The main internal quality indexes of the fruits and vegetables at the present stage comprise soluble solid content, acidity, flavone content, vitamin content, pectin content and the like. The SCC index of the fruits and vegetables can be obtained by analyzing the fruit juice by adopting a refraction method; the acidity of the fruit and vegetable can be obtained by measuring the fruit juice by a pH meter and a chemical titration method, the flavone and vitamin content can be measured by analyzing the fruit juice by a high performance liquid chromatography method, and the reducing sugar content can be measured by a Filin reagent method. However, the methods are used for carrying out destructive tests on fruits and vegetables, and the detected samples cannot be sold for the second time and cannot be subjected to rapid nondestructive detection. Therefore, it is necessary to develop an intelligent detection and evaluation device which has wide application, small volume, strong pertinence, good stability, fast detection speed, convenient use and low price.
In recent years, near infrared spectrum technology has been successful in detecting the internal quality of fruits and vegetables, and portable detection equipment for the internal quality of fruits and vegetables based on a near infrared spectrometer has been developed, but the spectrometer belongs to a precise instrument, has high requirements on working environment and is expensive, and when fruits and vegetables with different fruit diameters are detected by using the same detection instrument, the stability and the robustness of near infrared spectrum signals received by the spectrometer are extremely poor due to the influence of ambient light and the difference of fruit and vegetable skins.
Disclosure of Invention
Aiming at the requirements of markets on the internal quality of fruits and vegetables, the utility model provides the detection probe for collecting the spectral information of fruits and vegetables with different fruit diameters, the spectral signal collection is carried out on the fruits and vegetables based on the multispectral sensor which can work under different environments, the traditional detection equipment is replaced, the cost is reduced, meanwhile, the speed of detection and analysis is improved by adopting a mode that one equipment carries multiple detection gears, in-situ non-contact detection is directly carried out on the fruits and vegetables, the pertinence is stronger, and the detection precision is higher.
Aiming at fruits and vegetables with different fruit diameters, the incidence angle and the light source wattage of the probe light source are often different, the same light source is used for detection, and the collected spectral stability, robustness and accuracy are affected. Aiming at the problem, the utility model designs and develops a multi-gear spectrum acquisition probe aiming at different fruit diameters, and improves the sensitivity, stability and repeatability of detection. Compared with the prior art, the detection device and the detection system have the advantages of wider application scene, higher intellectualization and integration degree, better stability, high detection speed, small volume and low price.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the detection probe for collecting the spectrum information of fruits and vegetables with different fruit diameters comprises a characteristic spectrum sensing module, a light source module, a shading module and a shell;
the top of the detection probe is an arc-shaped surface;
the characteristic spectrum sensing module comprises a sensing port 7 and a collimating lens 2, and is used for being connected with optical-electric signal conversion devices such as a micro multispectral sensor or a micro spectrometer;
the sensing port 7 is arranged at the center of the top of the detection probe, the collimating lens 2 is arranged at the lower part of the sensing port 7, and an optical-electric signal conversion device such as a micro spectrometer is arranged below the collimating lens 2;
the light source module comprises a lamp bead 3 and a spotlight cup 1;
the number of the lamp beads 3 is four, namely a first lamp bead, a second lamp bead, a third lamp bead and a fourth lamp bead from left to right; the first lamp beads and the fourth lamp beads are symmetrically arranged at two sides of the sensing port 7 at an angle of 45 degrees with the vertical plane, and the second lamp beads and the third lamp beads are symmetrically arranged at two sides of the sensing port 7 at an angle of 30 degrees with the vertical plane;
each lamp bead 3 is fixed on the spotlight cup 1;
the four lamp beads 3 are divided into two groups, wherein 2 lamp beads are respectively used for generating light beams for two gears; the first lamp beads and the fourth lamp beads are a group, correspond to the first gear and provide light beams for fruits and vegetables with large fruit diameters; the second lamp beads and the third lamp beads are a group, correspond to the second gear and provide light beams for fruits and vegetables with small fruit diameters;
the shading module comprises a rubber gasket 4 and an arc-shaped gasket 6; the rubber gasket 4 is arranged on the outer ring of the sensing port 7; the arc gaskets 6 are arranged on two sides of the light source module;
the top of casing is the arc, and length is moderate, and both ends adopt the chamfer to adapt to the different sizes of fruit vegetables better.
The fruit diameter of the fruits and vegetables with large fruit diameter is 50-90mm, and the fruit diameter of the fruits and vegetables with small fruit diameter is 25-50mm; the diameter of the arc at the top of the detection probe is 90mm.
The optical-electrical signal conversion device is a miniature spectrum sensor or a miniature spectrometer.
The lamp bead 3 is a halogen lamp for full-band spectrum analysis, has good light source stability and is used for generating detection light.
The spotlight cup 1 is treated by electroplating aluminum, so that the reflectivity of the reflecting surface is improved, and the spotlight cup is used for collimating detection light generated by the lamp beads 3.
The length of the spotlight cup 1 is 12mm, the diameter of the reflecting surface is 10mm, and the middle part is provided with an embedded hole of the lamp bead 3; and after the lamp beads 3 are embedded, the bottom is encapsulated, and the whole is encapsulated into the light source module.
Two fixed eyes 5 are arranged on the outer side of the shell, and two ends of the fixed eyes 5 are sealed by chamfering.
Compared with the prior art, the utility model has the beneficial effects that:
the nondestructive testing device probe is designed according to different integral time and different light source searchlighting angles required by collecting spectral information of fruits and vegetables with different fruit diameters and combines the influence of the peel thickness of the fruits and vegetables with different fruit diameters, so that the defects of larger influence of ambient light, poorer spectral stability, low modeling precision and larger variation coefficient of the traditional testing equipment when the fruits and vegetables with different fruit diameters are tested are effectively overcome. The two groups of light source modules are respectively arranged at an angle of 30 degrees and 45 degrees with the vertical plane, so that the epidermis of the fruits and vegetables with small fruit diameter and large fruit diameter can be effectively penetrated, and in-situ non-contact detection is carried out on the fruits and vegetables to be detected. The rubber gasket and the arc-shaped gasket are arranged at the receiving opening of the spectrometer, so that the influence of ambient stray light is obviously reduced, and the supporting effect on the fruit and vegetable sample to be detected is achieved.
According to the external characteristics of different fruit diameters of fruits and vegetables, the integration time and the power of the light source are adjusted, so that the absorption and scattering characteristics of the fruits and vegetables tissues through which rays pass can be detected by optical-electric signal conversion devices such as a sensing port, a micro spectrometer and the like. The design method can improve the detection precision, the rapidity and the accuracy.
By measuring the received ray data and combining a data processing algorithm, the internal quality detection model of the fruits and vegetables under different fruit diameters can be obtained. The corresponding data processing algorithm can be designed and optimized according to actual conditions so as to better adapt to the requirements of different varieties and specifications of fruits and vegetables.
In conclusion, the probe has a simple structure and is easy to manufacture; meanwhile, the light source gear can be selected according to specific requirements, the light source gear can be better adapted to fruits and vegetables of different varieties and specifications, and the near infrared spectrum signals of fruits and vegetables of different fruit diameters can be rapidly and accurately collected.
Drawings
FIG. 1 is a schematic diagram of a detection probe for collecting spectral information of fruits and vegetables with different fruit diameters;
FIG. 2 is a cross-sectional view of a detection probe for collecting spectral information of fruits and vegetables with different fruit diameters according to the present utility model;
fig. 3 is a top view of a detection probe for collecting spectral information of fruits and vegetables with different fruit diameters.
Wherein the reference numerals are as follows:
1. spotlight cup 2, collimating lens
3. Lamp bead 4 and rubber gasket
5. Fixed hook eye 6 and arc-shaped gasket
7. Sensing mouth
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings.
As shown in fig. 1-3, a detection probe for collecting spectrum information of fruits and vegetables with different fruit diameters comprises a characteristic spectrum sensing module, a light source module, a shading module and a shell.
The top of the detection probe is an arc-shaped surface, and the two sides of the detection probe are subjected to chamfering treatment. Preferably, the diameter of the arc of the top of the detection probe is 90mm.
The characteristic spectrum sensing module comprises a sensing port 7 and a collimating lens 2, and is used for being connected with optical-electric signal conversion devices such as a miniature multispectral sensor or a miniature spectrometer.
The sensing port 7 is arranged at the top center of the detection probe, the collimating lens 2 is arranged at the lower part of the sensing port 7, an optical-electric signal conversion device such as a micro spectrometer is arranged below the collimating lens 2, and light received by the sensing port 7 is focused and collimated according to the convex lens imaging principle.
The sensing port 7 is used for receiving light transmitted through the fruit and vegetable sample, and transmitting the light to the optical-electric signal conversion device through the collimating lens 2 for data processing. Preferably, the optical-electrical signal conversion device is a micro-spectral sensor or a micro-spectrometer.
The light source module comprises a lamp bead 3 and a spotlight cup 1.
The number of the lamp beads 3 is four, namely a first lamp bead, a second lamp bead, a third lamp bead and a fourth lamp bead from left to right. Wherein, first lamp pearl and fourth lamp pearl are 45 symmetrical arrangement in the both sides of perception mouth 7 with vertical plane, and second lamp pearl and third lamp pearl are 30 symmetrical arrangement in the both sides of perception mouth 7 with vertical plane.
Each lamp bead 3 is fixed on the spotlight cup 1. The lamp bead 3 is a halogen lamp for full-band spectrum analysis, has good light source stability and is used for generating detection light.
The four beads 3 are divided into two groups, wherein 2 of the four beads are respectively used for generating light beams for two gears. The first lamp beads and the fourth lamp beads are a group, correspond to the first gear and provide light beams for fruits and vegetables with large fruit diameters; the second lamp beads and the third lamp beads are a group, correspond to the second gear and provide light beams for fruits and vegetables with small fruit diameters. The arrangement mode can fully penetrate the fruit and vegetable epidermis with different fruit diameters, and a stable fruit and vegetable spectrum pattern with good robustness is obtained. Preferably, the fruit diameter of the fruits and vegetables with large fruit diameter is 50-90mm. Preferably, the fruit diameter of the small-diameter fruits and vegetables is 25-50mm.
The spotlight cup 1 is treated by electroplating aluminum, so that the reflectivity of the reflecting surface is improved, and the spotlight cup is used for collimating detection light generated by the lamp beads 3. Under specific lighting requirements, a combined lighting scheme is adopted to improve the lighting effect and quality. Preferably, the spotlight cup 1 is 12mm long, the diameter of the reflecting surface is 10mm, and the embedded hole of the lamp bead 3 is reserved in the middle. And after the lamp beads 3 are embedded, the bottom is encapsulated, and the whole is encapsulated into the light source module.
The shading module comprises a rubber gasket 4 and an arc-shaped gasket 6.
The rubber gasket 4 is arranged on the outer ring of the sensing port 7 and is used for reducing the influence of stray light of the surrounding environment.
The arc gaskets 6 are arranged on two sides of the light source module and used for reducing the influence of stray light of the surrounding environment.
The lamp beads 3 are used as light emitters of the probes to generate a continuous ray bundle; the sensing port 7 is used for receiving the radiation signal which is diffusely transmitted after passing through fruits and vegetables, and the arc-shaped gasket 6 and the rubber gasket 4 are arranged around the sensing port, so that the negative influence of stray light of the external environment on the spectrums of the fruits and vegetables can be eliminated by the design mechanism.
The top of casing is the arc, and length is moderate, and both ends adopt the chamfer to adapt to the different sizes of fruit vegetables better. Two fixed eyes 5 are arranged on the outer side of the shell, and two ends of the fixed eyes 5 are sealed by chamfering, so that the fixed installation is convenient, and the use in actual operation is convenient.
The working process of the utility model is as follows:
before collection, the instrument is turned on and preheated for 30min, so that the light source module is in a stable state, and the heating power and the illumination power of the lamp beads 3 and the spotlight cup 1 tend to be stable. Before use, fruit diameter gears of the fruit and vegetable samples to be detected are selected and divided into two gears: 25-50mm fruit diameter and 50-90mm fruit diameter, and correcting and self-checking the instrument. After correction is completed, the detection probe is aligned to the smooth surface of the equatorial position of the fruit and vegetable to collect spectral information, the fruit and vegetable is attached to the arc-shaped gasket 6, and interference of external light is isolated through the arc-shaped gasket 6. The equatorial region is in close contact with the rubber gasket 4. The lamp beads 3 emit light, the light enters the fruit and vegetable sample after being collimated and reflected by the spotlight cup 1, and the light enters the collimating lens 2 through the sensing port 7 after being diffusely reflected and diffusely transmitted inside the fruit and vegetable. The entered light transmits signals to a subsequent scheduling calculation module through a spectrometer to analyze and predict the spectrum information.
Claims (8)
1. A detect probe for gathering different fruit footpath fruit vegetables spectral information, its characterized in that: the detection probe comprises a characteristic spectrum sensing module, a light source module, a shading module and a shell;
the top of the detection probe is an arc-shaped surface;
the characteristic spectrum sensing module comprises a sensing port (7) and a collimating lens (2) and is used for being connected with an optical-electric signal conversion device;
the sensing port (7) is arranged at the center of the top of the detection probe, the collimating lens (2) is arranged at the lower part of the sensing port (7), and optical-electric signal conversion devices such as a micro spectrometer are arranged below the collimating lens (2);
the light source module comprises a lamp bead (3) and a spotlight cup (1);
the number of the lamp beads (3) is four, namely a first lamp bead, a second lamp bead, a third lamp bead and a fourth lamp bead from left to right; the first lamp beads and the fourth lamp beads are symmetrically arranged at two sides of the sensing opening (7) at an angle of 45 degrees with the vertical plane, and the second lamp beads and the third lamp beads are symmetrically arranged at two sides of the sensing opening (7) at an angle of 30 degrees with the vertical plane;
each lamp bead (3) is fixed on the spotlight cup (1);
the four lamp beads (3) are divided into two groups, wherein 2 lamp beads are respectively used for generating light beams for two gears; the first lamp beads and the fourth lamp beads are a group, correspond to the first gear and provide light beams for fruits and vegetables with large fruit diameters; the second lamp beads and the third lamp beads are a group, correspond to the second gear and provide light beams for fruits and vegetables with small fruit diameters;
the shading module comprises a rubber gasket (4) and an arc-shaped gasket (6); the rubber gasket (4) is arranged on the outer ring of the sensing port (7); the arc gaskets (6) are arranged at two sides of the light source module;
the top of casing is the arc, and length is moderate, and both ends adopt the chamfer to adapt to the different sizes of fruit vegetables better.
2. The detection probe for collecting spectral information of fruits and vegetables with different fruit diameters according to claim 1, wherein: the fruit diameter of the fruits and vegetables with large fruit diameter is 50-90mm, and the fruit diameter of the fruits and vegetables with small fruit diameter is 25-50mm; the diameter of the arc at the top of the detection probe is 90mm.
3. The detection probe for collecting spectral information of fruits and vegetables with different fruit diameters according to claim 1, wherein: the optical-electrical signal conversion device is a miniature spectrum sensor or a miniature spectrometer.
4. The detection probe for collecting spectral information of fruits and vegetables with different fruit diameters according to claim 1, wherein: the lamp bead (3) is a halogen lamp for full-band spectrum analysis, has good light source stability and is used for generating detection light.
5. The detection probe for collecting spectral information of fruits and vegetables with different fruit diameters according to claim 1, wherein: the spotlight cup (1) improves the reflectivity of the reflecting surface through electrolytic aluminum plating treatment and is used for collimating detection light generated by the lamp beads (3).
6. The detection probe for collecting spectral information of fruits and vegetables with different fruit diameters according to claim 1, wherein: the length of the spotlight cup (1) is 12mm, the diameter of the reflecting surface is 10mm, and the middle part is provided with an embedded hole of the lamp bead (3); and after the lamp beads (3) are embedded, the bottom is encapsulated, and the whole light source module is encapsulated.
7. The detection probe for collecting spectral information of fruits and vegetables with different fruit diameters according to claim 1, wherein: two fixed eyes (5) are arranged on the outer side of the shell, and two ends of the fixed eyes (5) are sealed by chamfering.
8. The detection probe for collecting spectral information of fruits and vegetables with different fruit diameters according to claim 1, wherein: the optical-electrical signal conversion device is a miniature multispectral sensor or a miniature spectrometer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321374517.8U CN220542752U (en) | 2023-06-01 | 2023-06-01 | Detection probe for collecting spectral information of fruits and vegetables with different fruit diameters |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321374517.8U CN220542752U (en) | 2023-06-01 | 2023-06-01 | Detection probe for collecting spectral information of fruits and vegetables with different fruit diameters |
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| Publication Number | Publication Date |
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| CN220542752U true CN220542752U (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321374517.8U Active CN220542752U (en) | 2023-06-01 | 2023-06-01 | Detection probe for collecting spectral information of fruits and vegetables with different fruit diameters |
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| Country | Link |
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| CN (1) | CN220542752U (en) |
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2023
- 2023-06-01 CN CN202321374517.8U patent/CN220542752U/en active Active
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