CN216771523U - Fresh meat chemical additive screening device - Google Patents
Fresh meat chemical additive screening device Download PDFInfo
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- CN216771523U CN216771523U CN202123270200.3U CN202123270200U CN216771523U CN 216771523 U CN216771523 U CN 216771523U CN 202123270200 U CN202123270200 U CN 202123270200U CN 216771523 U CN216771523 U CN 216771523U
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Abstract
The utility model relates to the technical field of agricultural product quality detection, and provides a fresh meat chemical additive screening device, which comprises: a spectrum receiving device having a signal receiving end; a spectral excitation device having a signal excitation end; the object stage is used for placing a sample to be detected, and the signal excitation end and the signal receiving end face the object stage; and the terminal is respectively connected with the spectrum receiving device and the spectrum excitation device. The screening device for the chemical additives of the fresh meat can realize nondestructive testing, can better reflect the internal information of a sample to be tested by utilizing the Raman space scattering characteristics of the sample to be tested, and has higher detection precision.
Description
Technical Field
The utility model relates to the technical field of agricultural product quality detection, in particular to a fresh meat chemical additive screening device.
Background
Agricultural products refer to plants, animals and their products obtained in agriculture, which can be used as food sources. Some agricultural products are added with hormones in the process of cultivation or feeding, the hormones can generate toxic and side effects after being eaten by people and seriously affect the health of the animals, for example, in order to promote the synthesis of lean meat in the process of growth and development of the animals, illegal merchants often use salbutamol to feed the animals, and the salbutamolShort-term beta of amino alcohol2Adrenergic receptor agonists, most of which are deposited in the tissues and organs of animals such as the liver and muscles if the animals are fed large amounts of salbutamol.
At present, the hormone-bearing agricultural products are difficult to be perceived by consumers and only can be checked by a supervision agency, so that the agricultural products are prevented from flowing into the market. In the prior art, during inspection, a chemical method is mainly adopted for detection, according to components to be detected, a sample is firstly crushed according to steps, then a solution is extracted for detection, and finally data are obtained.
Obviously, the existing detection method needs to destroy the sample during detection, and has the disadvantages of complicated steps, time and labor waste and high cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides a fresh meat chemical additive screening device, which is used for overcoming the defects of complex steps, time and labor waste and high cost caused by the need of damaging a sample in detection in the prior art and realizing nondestructive detection.
The utility model provides a fresh meat chemical additive screening device, which comprises:
a spectrum receiving device having a signal receiving end;
a spectral excitation device having a signal excitation end;
the object stage is used for placing a sample to be detected, and the signal excitation end and the signal receiving end face the object stage;
and the terminal is respectively connected with the spectrum receiving device and the spectrum excitation device.
According to the screening device for the chemical additives of the fresh meat, provided by the utility model, the spectrum receiving device comprises a Raman imaging spectrometer and a CCD camera, the receiving end of the CCD camera is connected with the output end of the Raman forming spectrometer, the receiving end of the Raman forming spectrometer is provided with a signal receiving lens, the signal receiving lens is the signal receiving end, and the CCD camera is connected with the terminal.
According to the fresh meat chemical additive screening device provided by the utility model, the end part of the signal receiving lens, which is far away from the Raman imaging spectrometer, is provided with the filter plate.
According to the screening device for the chemical additives in the fresh meat, the filter is a 725nm wavelength filter, the spectral excitation device is a laser with a wavelength of 725nm, or the filter is a 1064nm wavelength filter, and the spectral excitation device is a laser with a wavelength of 1064 nm.
According to the screening device for the chemical additives of the fresh meat provided by the utility model, the screening device for the chemical additives of the fresh meat further comprises a carrying driving mechanism, the carrying driving mechanism comprises a horizontal moving device, the horizontal moving device is provided with a horizontal moving block capable of moving horizontally, and the carrying platform is connected with the horizontal moving block.
According to the screening device for the chemical additives of the fresh meat, provided by the utility model, the number of the spectrum excitation devices is multiple, and the spectrum excitation devices are arranged at intervals along the moving direction perpendicular to the horizontal moving block.
According to the screening device for the chemical additives of the fresh meat, provided by the utility model, the carrying driving mechanism further comprises a lifting device, the lifting device is arranged on the horizontal moving block, and the lifting end of the lifting device is connected with the carrying platform.
According to the screening device for the chemical additives of the raw fresh meat provided by the utility model, the screening device for the chemical additives of the raw fresh meat further comprises a distance measuring sensor, the detection end of the distance measuring sensor faces the objective table, and the distance measuring sensor is connected with the terminal so as to detect the distance between a sample to be detected on the objective table and the signal receiving end.
According to the screening device for the chemical additives of the raw fresh meat provided by the utility model, the screening device for the chemical additives of the raw fresh meat further comprises a fixed support, a first supporting block is arranged on the fixed support, a spherical fixed seat is arranged on the first supporting block, and a universal ball head of the spherical fixed seat is connected to the spectrum receiving device.
According to the screening device for the chemical additives of the raw and fresh meat provided by the utility model, the screening device for the chemical additives of the raw and fresh meat further comprises a dark box, and the spectrum receiving device, the spectrum exciting device and the objective table are all arranged in the dark box.
According to the fresh meat chemical additive screening device provided by the utility model, the spectrum excitation device can irradiate a sample to be detected on the objective table and excite the Raman excitation light, the spectrum receiving device can receive the Raman excitation light through the signal receiving end, then the spectrum receiving device transmits the received Raman excitation light signal to the terminal, and the terminal can analyze and judge the components of the sample to be detected according to the signal. Compared with the detection method in the prior art, the fresh meat chemical additive screening device provided by the utility model can realize nondestructive detection, can better reflect the internal information of the sample to be detected by utilizing the Raman space scattering characteristics of the sample to be detected, and has higher detection precision. And the steps are simple, time and labor are saved, and the cost is lower.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a fresh meat chemical additive screening device provided by the present invention;
reference numerals:
10: a spectrum receiving device; 11: a CCD camera; 12: a Raman imaging spectrometer;
121: a signal receiving lens; 122: a filter plate; 20: a spectral excitation device;
30: an object stage; 40: a loading drive mechanism; 41: a horizontal moving device;
42: a lifting device; 50: a ranging sensor; 60: a dark box;
70: a fixed bracket; 71: a spherical fixed seat; 80: and (4) a terminal.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The fresh meat chemical additive screening device provided by the utility model detects the components of the agricultural products through the spectral signals, and in the embodiment, the device can be used for detecting salbutamol in fresh meat. Of course, the device can also be used for detecting the content of other agricultural products according to the needs, and the utility model is not limited.
The fresh meat chemical additive screening device of the present invention will be described with reference to fig. 1.
Referring to fig. 1, in an embodiment of the present invention, a fresh meat chemical additive screening device includes:
a spectrum receiving device 10, wherein the spectrum receiving device 10 is provided with a signal receiving end;
a spectral excitation device 20, said spectral excitation device 20 having a signal excitation end;
the object stage 30, the object stage 30 is used for placing a sample to be measured, and the signal excitation end and the signal receiving end face the object stage 30;
and the terminal 80, wherein the terminal 80 is respectively connected with the spectrum receiving device 10 and the spectrum excitation device 20.
The signal receiving end of the spectrum receiving device 10 can receive the raman excitation light, the spectrum excitation device 20 is located at the signal receiving end and outside the sample to be measured on the stage 30, and the signal excitation end of the spectrum excitation device 20 can emit an excitation signal to excite the raman excitation light of the sample to be measured.
The stage 30 is used for placing a sample to be tested, and in the present embodiment, raw meat can be placed, so the top surface of the stage 30 can be a rectangular table surface, and an edge is protruded on the periphery of the rectangular table surface, so as to stably place the sample to be tested. Of course, the top of the stage 30 can be set in different modes according to the specific sample to be detected, which is not described herein.
The terminal 80 is preferably a computer terminal, and may also be an intelligent terminal such as a mobile phone, etc. as required, in this embodiment, the terminal 80 is connected with the spectrum receiving device 10 and the spectrum excitation device 20 in a wired or wireless manner, so as to control the spectrum excitation device 20 to emit the excitation signal and receive the raman excitation signal received by the spectrum receiving device 10.
In this embodiment, spectrum excitation device 20 can shine and arouse the raman excitation light to the sample that awaits measuring on objective table 30, and spectrum receiving device 10 then accessible signal reception end receives the raman excitation light, and subsequently, spectrum receiving device 10 transmits the raman excitation light signal that receives to terminal 80, and terminal 80 can carry out analysis and judgement to the composition of the sample that awaits measuring according to this signal. Compared with the detection method in the prior art, the fresh meat chemical additive screening device provided by the utility model can realize nondestructive detection, can better reflect the internal information of the sample to be detected by utilizing the Raman space scattering characteristics of the sample to be detected, and has higher detection precision. And the steps are simple, time and labor are saved, and the cost is lower.
Referring to fig. 1, in an embodiment of the present invention, the spectrum receiving apparatus 10 includes a raman imaging spectrometer 12 and a CCD camera 11, a receiving end of the CCD camera 11 is connected to an output end of the raman shaping spectrometer, a signal receiving lens 121 is disposed at the receiving end of the raman shaping spectrometer, the signal receiving lens 121 is the signal receiving end, and the CCD camera 11 is connected to the terminal 80.
The CCD camera 11, i.e., a charge coupled device, is capable of changing light into electric charges and storing and transferring the electric charges. The raman imaging spectrometer 12 receives the scattered light from the sample and disperses the light to different wavelengths, and then projects the dispersed light onto a sensor inside the CCD camera 11, and the CCD camera 11 converts the light signal into an electrical signal, which can then be transmitted to the terminal 80. The receiving of the raman excitation light and the conversion of the signal are achieved for analysis by the terminal 80. In this embodiment, the signal receiving end of the spectrum receiving device 10 faces downward vertically to receive the raman excitation light, so that the raman imaging spectrometer 12 is fixed right below the CCD camera 11, and the signal receiving lens 121 is located at the bottom of the raman imaging spectrometer 12.
In connection with the above structure, a filter 122 is disposed at an end of the signal receiving lens 121 far away from the raman imaging spectrometer 12.
The raman excitation light from the sample can be filtered by the filter 122, so that the signal receiving lens 121 can focus the raman scattered light of the sample after filtering into the raman imaging spectrometer 12.
In this embodiment, the filter 122 is a 725nm wavelength filter 122, and the spectrum excitation device 20 is a laser with a wavelength of 725nm, or the filter 122 is a 1064nm wavelength filter 122, and the spectrum excitation device 20 is a laser with a wavelength of 1064 nm.
Referring to fig. 1, in addition, in an embodiment of the present invention, the fresh meat chemical additive screening device further includes a loading driving mechanism 40, the loading driving mechanism 40 includes a horizontal moving device 41, the horizontal moving device 41 has a horizontal moving block capable of moving horizontally, and the loading platform 30 is connected to the horizontal moving block.
The lifting device 42 and the object stage 30 can be driven to move horizontally by the horizontal moving block, so that the sample to be detected is driven to move, and thus, the Raman spectrum signals of different parts of the sample can be ensured to be acquired. Specifically, the horizontal movement device 41 includes a horizontal driving motor, a screw, a guide rod and a horizontal movement block, the screw and the guide rod are arranged in parallel, the horizontal driving motor is connected with the screw, the screw is in threaded connection with the horizontal movement block, the guide rod penetrates through the horizontal movement block, and the horizontal movement block can be driven to move horizontally through rotation of the screw. Of course, in other embodiments, the horizontal moving block can also be driven to move by the horizontal driving air cylinder.
Further, the number of the spectral excitation devices 20 is plural, and the plural spectral excitation devices 20 are arranged at intervals along a moving direction perpendicular to the horizontal moving block.
Therefore, the detection of a plurality of samples or the detection of different parts of a larger sample can be carried out simultaneously, and the detection efficiency is improved. In this embodiment, it is preferable that the signal excitation ends of the plurality of spectrum excitation devices 20 are arranged in parallel and at intervals. In yet another embodiment, the horizontal moving device 41 is not provided, and the excitation signals emitted by the plurality of spectrum excitation devices 20 are distributed on the sample to realize the detection.
Referring to fig. 1, in addition, the object driving mechanism 40 further includes a lifting device 42, the lifting device 42 is disposed on the horizontal moving block, and a lifting end of the lifting device 42 is connected to the object stage 30.
The distance between the object stage 30 and the signal receiving end can be adjusted through the lifting device 42, so that the distance between the surface of the sample to be detected with different thicknesses and the signal receiving end is equal, and the detection accuracy and the model applicability are improved. In this embodiment, the lifting device 42 may be a lifting cylinder disposed on the horizontal moving block.
The horizontal moving device 41 and the lifting device 42 are connected with the terminal 80 in a wired or wireless mode, so that the terminal 80 can automatically control the horizontal moving device 41 and the lifting device 42.
In combination with the above-mentioned lifting device 42, the fresh meat chemical additive screening device further includes a distance measuring sensor 50, a detection end of the distance measuring sensor 50 faces the object stage 30, and the distance measuring sensor 50 is connected to the terminal 80 to detect a distance between a sample to be detected on the object stage 30 and the signal receiving end.
The distance measuring sensor 50 may be a laser displacement sensor with a detection accuracy of 0.1 mm. The distance measuring sensor 50 is located at the outer side of the sample to be measured on the signal receiving end and the object stage 30, the distance between the distance measuring sensor 50 and the spectrum receiving device 10 is kept consistent, laser is emitted to the sample to be measured of the object stage 30, the laser signal is received, the distance between the sample to be measured and the spectrum receiving device 10 can be analyzed by transmitting the signal to the terminal 80, and then the distance adjustment can be realized by combining the lifting device 42 given above.
Referring to fig. 1, in an embodiment of the present invention, the fresh meat chemical additive screening device further includes a fixing bracket 70, a first supporting block is disposed on the fixing bracket 70, a spherical fixing seat 71 is disposed on the first supporting block, and a universal ball of the spherical fixing seat 71 is connected to the spectrum receiving device 10.
The fixed support 70 is used to support the spectrum detection device to ensure that it is located above the sample to be detected. The spherical fixing seat 71 comprises a fixing seat arranged on the first supporting block and a universal ball head movably arranged in the fixing seat, and the position of the spectrum detection device can be adjusted through the spherical fixing seat 71 so as to ensure that the spectrum detection device is vertically downward and the signal receiving end faces the objective table 30. In this embodiment, the fixing bracket 70 is rod-shaped to avoid affecting the detection.
In addition, the fixed support 70 is further provided with a second support block and a third support block, the end of the second support block is connected with the spectrum excitation device 20, and the spectrum excitation device 20 is inclined at an angle of 15 degrees so as to ensure that the spectrum excitation device can emit a laser signal with a fixed wavelength to irradiate the surface of the sample; the end of the third support block is connected to a distance measuring sensor 50 to measure the distance of the sample to be measured.
Referring to fig. 1, in addition, the fresh meat chemical additive screening device further includes a dark box 60, and the spectrum receiving device 10, the spectrum excitation device 20 and the object stage 30 are all disposed in the dark box 60.
Therefore, the influence of dust and external stray light can be avoided, and the detection accuracy is ensured. Similarly, the fixed support 70, the range sensor 50, and the carrier drive mechanism 40 are also located within the dark box 60, and the terminal 80 is located outside the dark box 60 for ease of operation and control of the analysis.
Referring to fig. 1, the following steps are shown in the detection and analysis of salbutamol in raw meat based on the apparatus of the previous embodiment:
acquiring the distance between the sample to be measured and the signal receiving lens 121 through the ranging sensor 50;
comparing whether the distance between the obtained sample to be detected and the signal receiving lens 121 is equal to a set value or not, if not, calculating the difference value between the two, controlling the lifting device 42, and adjusting the height of the object stage 30 until the two are equal;
the spectrum excitation device 20 is opened to irradiate the sample, the raman scattering light from the sample to be measured is acquired by the raman imaging spectrometer 12 through the filter 122 and the signal receiving lens 121, and the CCD camera converts the optical signal into an electrical signal and transmits the electrical signal to the terminal 80;
at the moment, Raman space scattering characteristic data of one point of a sample to be detected is obtained;
driving the sample to be detected to move through the horizontal moving device 41, and scanning the next data point;
finally, acquiring Raman space scattering characteristic data of the whole sample to be detected;
and (4) bringing the model into a sample to be detected, and judging and calculating whether the sample to be detected contains salbutamol and the content of the salbutamol.
In this embodiment, the specific steps of bringing the model of the sample to be tested into the test, and determining whether the sample to be tested contains albuterol and its content are as follows:
acquiring a Raman space scattering spectrum image of a sample to be detected;
extracting Raman spectrums of different offset positions of the image;
and (4) bringing the extracted spectral data into a database to analyze whether the fresh meat contains salbutamol.
If the salbutamol is contained, the content is substituted into a model to calculate the content.
Compared with the existing Raman space line scanning equipment, the spectrum excitation device 20 of the device is a laser, directly irradiates a sample through the laser, avoids the loss of light in transmission, and has more concentrated laser energy and larger detection depth; compared with the existing common Raman point detection equipment which can only obtain the peak value information of the sample, the device can obtain the spatial emission spectrum image of the sample to be detected, and has more information in the spatial scattering profile of any Raman wave number, such as parameters of a peak value, a half wave width, a progressive value, a slope of a curve at the peak value 1/2 and the like, so that the detection information is richer, the modeling is more accurate, and the precision is higher.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A fresh meat chemical additive screening device, comprising:
a spectrum receiving device having a signal receiving end;
a spectral excitation device having a signal excitation end;
the object stage is used for placing a sample to be detected, and the signal excitation end and the signal receiving end face the object stage;
and the terminal is respectively connected with the spectrum receiving device and the spectrum excitation device.
2. The fresh meat chemical additive screening device as claimed in claim 1, wherein the spectrum receiving device comprises a raman imaging spectrometer and a CCD camera, a receiving end of the CCD camera is connected to an output end of the raman imaging spectrometer, a signal receiving lens is arranged at the receiving end of the raman imaging spectrometer, the signal receiving lens is the signal receiving end, and the CCD camera is connected to the terminal.
3. The fresh meat chemical additive screening device of claim 2, wherein a filter is disposed at an end of the signal receiving lens away from the Raman imaging spectrometer.
4. The fresh meat chemical additive screening device of claim 3, wherein the filter is a 725nm wavelength filter, and the spectral excitation device is a laser with a wavelength of 725nm, or the filter is a 1064nm wavelength filter and the spectral excitation device is a laser with a wavelength of 1064 nm.
5. The fresh meat chemical additive screening device of any one of claims 1 to 4, wherein the fresh meat chemical additive screening device further comprises a loading driving mechanism, the loading driving mechanism comprises a horizontal moving device, the horizontal moving device is provided with a horizontal moving block capable of moving horizontally, and the loading table is connected with the horizontal moving block.
6. The fresh meat chemical additive screening device of claim 5, wherein the number of the spectrum excitation devices is multiple, and the spectrum excitation devices are arranged at intervals along a moving direction perpendicular to the horizontal moving block.
7. The fresh meat chemical additive screening device of claim 5, wherein the carrying driving mechanism further comprises a lifting device, the lifting device is arranged on the horizontal moving block, and a lifting end of the lifting device is connected with the carrying platform.
8. The fresh meat chemical additive screening device of claim 7, further comprising a distance measuring sensor, wherein a detection end of the distance measuring sensor faces the object stage, and the distance measuring sensor is connected with the terminal to detect a distance between a sample to be detected on the object stage and the signal receiving end.
9. The fresh meat chemical additive screening device of any one of claims 1 to 4, wherein the fresh meat chemical additive screening device further comprises a fixing bracket, a first supporting block is arranged on the fixing bracket, a spherical fixing seat is arranged on the first supporting block, and a universal ball head of the spherical fixing seat is connected to the spectrum receiving device.
10. The fresh meat chemical additive screening device of any one of claims 1 to 4, wherein the fresh meat chemical additive screening device further comprises a dark box, and the spectrum receiving device, the spectrum excitation device and the object stage are all arranged in the dark box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123270200.3U CN216771523U (en) | 2021-12-23 | 2021-12-23 | Fresh meat chemical additive screening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123270200.3U CN216771523U (en) | 2021-12-23 | 2021-12-23 | Fresh meat chemical additive screening device |
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| Publication Number | Publication Date |
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| CN216771523U true CN216771523U (en) | 2022-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123270200.3U Active CN216771523U (en) | 2021-12-23 | 2021-12-23 | Fresh meat chemical additive screening device |
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| CN (1) | CN216771523U (en) |
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2021
- 2021-12-23 CN CN202123270200.3U patent/CN216771523U/en active Active
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