Pocket type detection equipment for on-site detection of meat quality

Abstract

The utility model discloses pocket type detection equipment for on-site detection of meat quality. The pocket type detection equipment comprises a sample placing area; an annular light source module including a light emitting module for emitting a plurality of detection light of different wavelengths; the condensing convex lens is used for condensing the detection light to the sample placing area; the detection module comprises a spectrum detection module and a camera module, the spectrum detection module is used for receiving a sample fluorescence spectrum from the sample placement area and generating a malondialdehyde detection result, the camera module comprises a camera and an image processing module, the camera is used for collecting a sample image of the sample placement area, and the image processing module is used for processing the sample image; the image processing module is used for receiving the sample image and generating RGB (Red, Green and Blue) three-primary-color data according to the sample image to generate a detection result of volatile basic nitrogen; and a display module electrically connected to the detection module. According to the device disclosed by the utility model, malonaldehyde and volatile basic nitrogen contained in livestock and poultry meat can be rapidly and nondestructively detected in real time.

Description

Technical Field

[0001] The utility model relates to the technical field of rapid non-destructive detection of meat quality, in particular to a pocket-type detection device for on-site detection of meat quality. Background Art

[0002] Livestock and poultry meat is prone to spoilage during processing, storage, and logistics, leading to waste and even food safety incidents. Therefore, quality monitoring is crucial. Classic physical and chemical methods for meat quality testing, such as Kjeldahl nitrogen determination and liquid chromatography, are accurate and widely used, but suffer from delayed results and inability to perform online, making them inadequate for the increasingly urgent technological transformation and upgrading needs of the meat industry. Fluorescence sensing and recognition, characterized by excellent stability, high sensitivity, and extremely low detection limits, has been applied by researchers to food quality sensing, bioimaging, and drug tracking. Meat quality detection technology based on fluorescent recognition materials shows great potential. Currently reported fluorescent sensing devices are mostly capable of detecting only a single sample or a single indicator, and their performance needs to be improved. Furthermore, they are complex, bulky, and lack integration. Therefore, the integrated development of miniature, pocket-sized fluorescent sensing devices is crucial for rapid, non-destructive, and real-time monitoring of meat freshness in diverse application scenarios. Summary of the Invention

[0003] An object of the present invention is to solve at least the above problems and / or disadvantages and to provide at least the advantages to be described hereinafter.

[0004] One purpose of the utility model is to provide a pocket-type detection device for on-site detection of meat quality, which can detect malondialdehyde and volatile basic nitrogen contained in livestock and poultry meat in real time, quickly and non-destructively, expand the detection range of the equipment, and enable users to obtain test results in real time through the display module, and promptly understand the freshness of the sample.

[0005] In order to achieve these purposes and other advantages according to the present invention, a pocket-type detection device for on-site detection of meat quality is provided, comprising:

[0006] Sample placement area;

[0007] an annular light source module, which is arranged above the sample placement area, and includes a light emitting module for emitting detection lights of multiple different wavelengths;

[0008] a focusing convex lens, which is arranged between the annular light source module and the sample placement area and is used to focus the detection light onto the sample placement area;

[0009] a detection module disposed below the sample placement area, the detection module comprising a spectrum detection module and a camera module, the spectrum detection module being configured to receive a sample fluorescence spectrum from the sample placement area and generate a malondialdehyde detection result, the camera module comprising a camera and an image processing module, the camera being configured to capture a sample image of the sample placement area, the image processing module being electrically connected to the camera and configured to receive the sample image and generate RGB primary color data based on the sample image to generate a volatile basic nitrogen detection result; and

[0010] A display module is electrically connected to the detection module and is used to display the detection result of the malondialdehyde, the detection result of the volatile basic nitrogen and the sample image.

[0011] Preferably, in the pocket-type detection device for on-site detection of meat quality, the annular light source module also includes an annular circuit board, and the multiple light-emitting modules include a number of LED lamp beads, which are lamp beads that emit detection light of multiple different wavelengths. The multiple LED lamp beads are electrically connected to the annular circuit board, and the annular circuit board is used to control the lamp beads among the multiple lamp beads that emit detection light of selected wavelengths to emit light while other lamp beads are extinguished.

[0012] Preferably, in the pocket-type detection device for on-site detection of meat quality, the plurality of LED lamp beads include multiple pairs of lamp beads, and the multiple pairs of lamp beads include lamp beads for emitting detection light of 280nm, 365nm, 470nm and 760nm, each pair of lamp beads are symmetrically distributed on the annular circuit board, and the plurality of LED lamp beads are evenly distributed on the annular circuit board.

[0013] Preferably, in the pocket-type detection device for on-site meat quality detection, the size of the lamp bead is 3.5 mm×3.5 mm.

[0014] Preferably, in the pocket-type detection device for on-site meat quality detection, the image processing module includes a CMOS image sensor.

[0015] Preferably, in the pocket-type detection device for on-site meat quality detection, the display module is an OLED display module.

[0016] Preferably, the pocket-type detection device for on-site detection of meat quality further includes a device housing, which is cylindrical, and the display module is arranged at the top of the device housing, and the annular light source module, the focusing convex lens, the sample placement area and the detection module are arranged in sequence from top to bottom inside the device housing.

[0017] The utility model has at least the following beneficial effects:

[0018] An embodiment of the present utility model provides a pocket-type detection device for on-site detection of meat quality, comprising: a sample placement area; an annular light source module, which is arranged above the sample placement area, the annular light source module comprising a light-emitting module for emitting detection light of multiple different wavelengths; a focusing convex lens, which is arranged between the annular light source module and the sample placement area, for converging the detection light to the sample placement area; a detection module, which is arranged below the sample placement area, the detection module comprising a spectral detection module and a camera module, the spectral detection module being used to receive the sample fluorescence spectrum from the sample placement area and generate a detection result of malondialdehyde, the camera module comprising a camera and an image processing module, the camera being used to capture a sample image of the sample placement area, the image processing module being electrically connected to the camera, for receiving the sample image and for generating RGB primary color data based on the sample image to generate a detection result of volatile basic nitrogen; and a display module, which is electrically connected to the detection module, for displaying the detection result of malondialdehyde, the detection result of volatile basic nitrogen and the sample image. The pocket-type detection device provided by the utility model for on-site detection of meat quality can detect the malondialdehyde and volatile basic nitrogen contained in livestock and poultry meat in real time, quickly and non-destructively, expanding the detection range of the equipment. Through the display module, the user can obtain the test results in real time and promptly understand the freshness of the sample.

[0019] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of a pocket-type detection device for on-site meat quality detection in an embodiment of the present invention.

[0021] Figure 2 It is a structural diagram of the display module in an embodiment of the present utility model.

[0022] Figure 3 It is a top view of the display module in the embodiment of the present utility model.

[0023] Figure 4 Schematic diagram of the structure of the annular light source module in the embodiment of the present invention.

[0024] Figure 5 It is a top view of the annular light source module in an embodiment of the present utility model.

[0025] Figure 6 It is a structural schematic diagram of the focusing convex lens in an embodiment of the utility model.

[0026] Figure 7 This is a schematic structural diagram of the sample placement area in an embodiment of the present utility model.

[0027] Figure 8 Schematic diagram of the structure of the detection module in the embodiment of the present utility model.

[0028] Figure 9 It is a top view of the detection module in the embodiment of the present utility model. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0030] like Figures 1 to 9 As shown, the embodiment of the present invention provides a pocket-type detection device for on-site detection of meat quality, comprising: a sample placement area 5; an annular light source module 2, which is arranged above the sample placement area 5, and the annular light source module 2 includes a light-emitting module for emitting a plurality of detection lights of different wavelengths; a focusing convex lens 4, which is arranged between the annular light source module 2 and the sample placement area 5, and is used to converge the detection light to the sample placement area 5; a detection module 6, which is arranged below the sample placement area 5, and the detection module 6 includes a spectrum detection module 6 and a camera module, and the spectrum detection module 6 includes a spectrum detection module 6 and a camera module. The detection module 6 is used to receive the sample fluorescence spectrum from the sample placement area 5 and generate the detection result of malondialdehyde. The camera module includes a camera 9 and an image processing module. The camera 9 is used to collect the sample image of the sample placement area 5. The image processing module is electrically connected to the camera 9 and is used to receive the sample image and generate RGB primary color data based on the sample image to generate the detection result of volatile basic nitrogen; and a display module 1 is electrically connected to the detection module 6 and is used to display the detection result of malondialdehyde, the detection result of volatile basic nitrogen and the sample image.

[0031] In a preferred embodiment, in the pocket-type detection device for on-site detection of meat quality, the annular light source module 2 also includes an annular circuit board, and the multiple light-emitting modules include a number of LED lamp beads 3, which are lamp beads that emit detection light of multiple different wavelengths. The multiple LED lamp beads 3 are electrically connected to the annular circuit board, and the annular circuit board is used to control the lamp beads among the multiple lamp beads that emit detection light of selected wavelengths to emit light while the other lamp beads are extinguished.

[0032] In a preferred embodiment, in the pocket-type detection device for on-site detection of meat quality, the plurality of LED lamp beads 3 include multiple pairs of lamp beads, and the multiple pairs of lamp beads include lamp beads for emitting detection light of 280nm, 365nm, 470nm and 760nm. Each pair of lamp beads is symmetrically distributed on the annular circuit board, and the plurality of LED lamp beads 3 are evenly distributed on the annular circuit board.

[0033] For example, multiple pairs of lamps can emit detection light at wavelengths of 280nm, 365nm, 470nm, and 760nm. Here, 280nm is the excitation wavelength for tyrosine (Tyr) detection, 365nm is the excitation wavelength for malondialdehyde (MDA) and the wavelength required for TVB-N detection, and 470nm and 760nm are the excitation wavelengths for hydrogen sulfide (H2S) detection.

[0034] The device provided by the utility model can emit light of multiple different wavelengths to meet the detection requirements of different fluorescent materials and expand the detection range of the device.

[0035] In a preferred embodiment, in the pocket-type detection device for on-site meat quality detection, the size of the lamp bead is 3.5 mm×3.5 mm.

[0036] In addition, the annular circuit board is a circular circuit board with an outer diameter of 50 mm and an inner diameter of 36 mm. The LED lamp beads 3 are connected to the annular circuit board by soldering.

[0037] In a preferred embodiment, in the pocket-type detection device for on-site meat quality detection, the image processing module includes a CMOS image sensor 10 .

[0038] The detection module 6 includes a spectral detection module 6 and a camera module. The camera module is a CMOS camera module, comprising a camera 9 and a CMOS image sensor 10. The CMOS image sensor 10 is positioned below the camera 9 and receives sample images captured by the camera 9. It processes the RGB primary color data in the sample images to generate volatile basic nitrogen (TVB-N) detection results. The spectral detection module 6 includes an input slit 11, a collimating optical element 12, a dispersion element 13, a focusing optical element 14, and a detector array 15. The input slit 11 is positioned to one side of the camera 9. The collimating optical element 12 is positioned below the input slit 11, the dispersion element 13 is positioned above the collimating optical element 12, the focusing optical element 14 is positioned below the dispersion element 13, and the detector array 15 is positioned above the focusing optical element 14. The fluorescence spectrum generated by the sample is processed by the incident slit 11, the collimating optical element 12, the dispersing element 13, and the focusing optical element 14, and finally enters the detector array 15 for detection. The spectrum detection module 6 can detect the fluorescence spectrum generated by the sample and generate the detection result of malondialdehyde.

[0039] In a preferred embodiment, in the pocket-type detection device for on-site meat quality detection, the display module 1 is an OLED display module.

[0040] The OLED display module includes an OLED display and screen-securing screws 8, which secure the OLED display to the top of the device housing. A detection module 6 is connected to the OLED display module 1 and transmits data on malondialdehyde and TVB-N levels to the OLED display module 1 for display. Users can use the display module 1 to instantly view the test results and the meat itself, assessing its freshness.

[0041] In a preferred embodiment, the pocket-type detection device for on-site detection of meat quality further includes a device housing 7, which is cylindrical. The display module 1 is arranged at the top of the device housing 7, and the annular light source module 2, the focusing convex lens 4, the sample placement area 5 and the detection module 6 are arranged in sequence inside the device housing 7 from top to bottom.

[0042] The device housing 7 is cylindrical, and the annular light source module 2, the focusing convex lens 4, the sample placement area 5, and the detection module 6 are all inside the device housing 7. Specifically, the annular light source module 2 is located at the top of the device housing 7 and is bonded to the inside of the device housing 7. The OLED display module 1 is located above the annular light source module 2 and is bonded to the outside of the device housing 7. The focusing convex lens 4 is located below the annular light source module 2 and is bonded to the device housing 7. The sample placement area 5 is located below the focusing convex lens 4 and is bonded to the device housing 7. The detection module 6 is located below the sample placement area 5 and is bonded to the device housing 7. The device housing is provided with a sample inlet above the sample placement area, and the sample inlet is provided with a door that can be opened and closed. When the door is opened, the sample can be sent into the sample placement area through the sample inlet. After the sample is placed in the sample placement area, the door is closed and the sample is tested.

[0043] The device provided by the utility model has a simple structure, a small volume, a high degree of integration, is easy to carry, and can realize rapid, non-destructive and real-time detection of the freshness of meat.

[0044] The working process of the device provided by the utility model is described below:

[0045] When performing malondialdehyde spectrum detection on poultry and livestock meat samples, the spectrum detection module 6 is used. The sample is placed in the sample placement area 5 and irradiated with light of a suitable wavelength. The outgoing light enters the spectrum detection module 6 through the incident slit 11, passes through the collimating optical element 12, the dispersion element 13 and the focusing optical element 14 in sequence, and finally reaches the detector array 15 to detect its spectrum data. The spectrum detection module 6 has a linear relationship model between fluorescence wavelength data and malondialdehyde, which can realize real-time detection of the malondialdehyde content of the test sample. The malondialdehyde content prediction model is y MDA =0.00389*x1+0.9966 (where y MDA is the fluorescence change rate, x1 is the malondialdehyde content).

[0046] When testing TVB-N in poultry and livestock meat samples, a CMOS camera module is used. The sample is placed in the sample placement area 5 and irradiated with light of a suitable wavelength. The camera 9 is activated to take a picture. The image data is transmitted to the CMOS image sensor 10 and the RGB primary color data is analyzed. The image processing module has a TVB-N content prediction model, which can realize real-time detection of the TVB-N content of the test sample. The TVB-N content prediction model is y TVB-N =118.02*x2-21.04(where y TVB-N is the predicted TVB-N content, and x2 is the average RGB color value of the sample).

[0047] In summary, the pocket-type detection equipment for on-site meat quality detection provided by the utility model can detect the malondialdehyde and volatile basic nitrogen contained in livestock and poultry meat in real time, quickly and non-destructively, expand the detection range of the equipment, and enable users to obtain test results in real time through the display module, and promptly understand the freshness of the sample.

[0048] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and exemplary embodiments. They can be applied to a variety of fields suitable for the present invention. Further modifications will be readily apparent to those skilled in the art. Therefore, the present invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims

1. A pocket-type detection device for on-site meat quality detection, characterized in that: include: Sample placement area; an annular light source module, which is arranged above the sample placement area, and includes a light emitting module for emitting detection lights of multiple different wavelengths; a focusing convex lens, which is arranged between the annular light source module and the sample placement area and is used to focus the detection light onto the sample placement area; a detection module disposed below the sample placement area, the detection module comprising a spectrum detection module and a camera module, the spectrum detection module being configured to receive a sample fluorescence spectrum from the sample placement area and generate a detection result of malondialdehyde, the camera module comprising a camera and an image processing module, the camera being configured to capture a sample image of the sample placement area, the image processing module being electrically connected to the camera and configured to receive the sample image and generate RGB primary color data based on the sample image to generate a detection result of volatile basic nitrogen; as well as A display module is electrically connected to the detection module and is used to display the detection result of the malondialdehyde, the detection result of the volatile basic nitrogen and the sample image.

2. The pocket-type detection device for on-site meat quality detection according to claim 1, characterized in that: The annular light source module also includes an annular circuit board, and the multiple light-emitting modules include a number of LED lamp beads, which are lamp beads that emit detection light of multiple different wavelengths. The multiple LED lamp beads are electrically connected to the annular circuit board, and the annular circuit board is used to control the lamp beads among the multiple lamp beads that emit detection light of selected wavelengths to emit light while other lamp beads are extinguished.

3. The pocket-type detection device for on-site meat quality detection according to claim 2, characterized in that: The plurality of LED lamp beads include multiple pairs of lamp beads, and the multiple pairs of lamp beads include lamp beads for emitting detection light of 280nm, 365nm, 470nm and 760nm. Each pair of lamp beads is symmetrically distributed on the annular circuit board, and the plurality of LED lamp beads are evenly distributed on the annular circuit board.

4. The pocket-type detection device for on-site meat quality detection according to claim 3, characterized in that: The size of the lamp bead is 3.5mm×3.5mm.

5. The pocket-type detection device for on-site meat quality detection according to claim 1, characterized in that: The image processing module includes a CMOS image sensor.

6. The pocket-type detection device for on-site meat quality detection according to claim 1, characterized in that: The display module is an OLED display module.

7. The pocket-type detection device for on-site meat quality detection according to claim 1, characterized in that: It also includes a device housing, which is cylindrical. The display module is arranged at the top of the device housing, and the annular light source module, the focusing convex lens, the sample placement area and the detection module are arranged in sequence inside the device housing from top to bottom.

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