CN220983118U - Plant leaf nitrogen content detection device - Google Patents
Plant leaf nitrogen content detection device Download PDFInfo
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- CN220983118U CN220983118U CN202321933751.XU CN202321933751U CN220983118U CN 220983118 U CN220983118 U CN 220983118U CN 202321933751 U CN202321933751 U CN 202321933751U CN 220983118 U CN220983118 U CN 220983118U
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 238000001514 detection method Methods 0.000 title claims abstract description 54
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 38
- 239000000523 sample Substances 0.000 claims abstract description 36
- 238000012545 processing Methods 0.000 claims abstract description 28
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 16
- 239000000428 dust Substances 0.000 claims abstract description 7
- 230000003287 optical effect Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 5
- 238000000411 transmission spectrum Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000007779 soft material Substances 0.000 claims description 3
- 238000001228 spectrum Methods 0.000 abstract description 2
- 238000012258 culturing Methods 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 40
- 238000000034 method Methods 0.000 description 5
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002329 infrared spectrum Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 150000001413 amino acids Chemical class 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model relates to a plant leaf nitrogen content detection device, and belongs to the field of spectrum nondestructive detection. The technical problem that solves provides a low-cost, simple structure compactness, detects the good plant leaf nitrogen content detection device of stability. The device comprises a light shield, a pressing probe, a probe connecting device, a control processing module, a display screen, function keys, a shell, a Bluetooth module, a lithium battery, a power switch, a dust board and a light source module. After the measuring key in the function key is pressed, the light source module sends out light with a specific angle to penetrate through the plant leaf, the light signal is converted into an electric signal by the sensor module, the electric signal is processed and calculated by the control processing module to obtain the nitrogen content of the plant leaf, the result is displayed on the display screen, and the nitrogen content can be sent to the mobile phone through the Bluetooth module and stored locally. The utility model has important significance for planting, culturing and diagnosing plants.
Description
Technical Field
The utility model belongs to the field of spectrum nondestructive detection, and particularly relates to a plant leaf nitrogen content detection device.
Background
Nitrogen is the element which is most easy to influence the nutrition conversion of plants, and the content of nitrogen element in plants is properly increased, so that the protein and amino acid content of plants can be increased, and the yield can be steadily increased. The national standard detection method of the plant leaf nitrogen content is a destructive detection method, which is time-consuming and labor-consuming, and also uses harmful chemical agents, so that a plant leaf nitrogen content detection device is urgently needed to realize the rapid, nondestructive and accurate detection of the plant leaf nitrogen content.
The invention discloses a method and a system for detecting nitrogen content of plant leaves, wherein the method and the system are used for collecting near infrared spectrums of dried and crushed plant leaf powder, and predicting the nitrogen content of the plant leaves based on the near infrared spectrums of the plant leaf powder, so that the system cannot realize nondestructive and rapid detection of the nitrogen content of the plant leaves.
Chinese patent publication No. CN110097535B, publication No. 2021, 5, 7, the invention is entitled "method, apparatus, computer device and storage medium for detecting nitrogen content in plant leaves", which discloses "method, apparatus, computer device and storage medium for detecting nitrogen content in plant leaves". The device converts the RGB color space model of the image of the plant leaf and the RGB color space model of the image of each color chart into a CIELAB color space model, and confirms the color grade of the color chart through the color difference values of the RGB color space model and the color space model of the image of each color chart, so that the nitrogen content of the plant leaf is determined. The device relies on the computational power of computer, and the colour difference value receives ambient light to influence greatly, is difficult to use in the field.
In summary, the existing instrument has the problems of inconvenient carrying, complex structural design and limited detection objects.
Disclosure of utility model
The utility model aims to provide a plant leaf nitrogen content detection device which is convenient to carry and capable of realizing nondestructive rapid detection of plant leaf nitrogen content.
The technical scheme adopted by the utility model is as follows: the plant leaf nitrogen content detection device comprises a light shield, a pressing probe, a probe connecting device, a control processing module, a display screen, function keys, a shell, a Bluetooth module, a lithium battery, a power switch, a dust board and a light source module; the microprocessor adopted by the control processing module has more application interfaces, is small in size and high in running speed, and ensures the efficiency of data processing; the Bluetooth module adopts a dual-mode chip, the communication distance is 75m, the communication speed can reach 10KB/s, and the stability of data in high-speed transmission can be ensured;
The pressing probe comprises a photoelectric sensor, a shading groove, an optical lens and a sensor baffle; the photoelectric sensor adopts a digital photoelectric sensor sensitive to visible light and near infrared light, has wider detection range and higher sensitivity, and can automatically correct errors caused by increased infrared components; the probe connecting device comprises a connecting shaft and a torsion spring; the function keys comprise a sending key and a page turning key; the light source module comprises an objective table, four light emitting diodes and a detection key, wherein the objective table is provided with a light through hole, and the wavelength and the number of the light emitting diodes are respectively set according to the characteristic wavelength and the number of the characteristic wavelength required by the plant leaf transmission spectrum measurement; and the light hole between the probe and the light source module is pressed, so that the light emitted by the light emitting diode is received by the photoelectric sensor through the light hole.
As a further scheme of the utility model: the four light sources of the detection device are arranged in a 5050 package at equal intervals.
As a further scheme of the utility model: an optical lens is arranged at the light-transmitting hole and the shading groove in the pressing probe, the four light-emitting diodes are arranged right below the light-transmitting hole, and a limiting groove for fixing a light source is arranged in the shell.
As a further scheme of the utility model: the power supply of the detection system is a rechargeable lithium battery, and the detection system is arranged in a battery groove in the shell, so that the detection system is convenient to detach.
As a further scheme of the utility model: the power switch is arranged on the side face of the shell, the detection key is arranged at the light source module, and the page turning key and the sending key are arranged on the upper portion of the shell.
As a further scheme of the utility model: the display screen is arranged at the top of the shell, and the shell is made of resin.
As a further scheme of the utility model: the outer dimensions of the housing were 161mm in length, 39mm in width and 29mm in height, and the dimensions of the detection portion were 40mm in length, 24mm in width and 29mm in height.
As a further scheme of the utility model: the pressing probe comprises a photoelectric sensor, a shading groove, an optical lens and a sensor baffle; the photoelectric sensor adopts a digital photoelectric sensor sensitive to visible light and near infrared light, has wider detection range and higher sensitivity, and can automatically correct errors caused by increased infrared components; the probe connecting device comprises a connecting shaft and a torsion spring; the function keys comprise a sending key and a page turning key; the light source module comprises an objective table, four light emitting diodes and a detection key, wherein the objective table is provided with light holes, the wavelength and the number of the light emitting diodes are respectively set according to the characteristic wavelength and the characteristic wavelength number required by the transmission spectrum measurement of the plant leaves, and the four light source wavelengths are respectively 440-480nm blue LED light sources, 640-680nm and 710-730nm red LED light sources and 960-990nm near-infrared LED light sources; the light shield is installed and fixed in the light shield groove; the probe connecting device is used for fixing the shell and pressing the probe; the display screen and the function keys are fixed at the upper end of the shell; the control processing module and the Bluetooth module are arranged above the lithium battery; the lithium battery is fixed at the bottom of the shell; the dust plate is arranged on the right side of the probe connecting device.
As a further scheme of the utility model: the photoelectric sensor, the display screen, the function keys, the Bluetooth module and the light source module are used for carrying out data transmission in the form of electric signals through the lead and the control processing module and are controlled by the control processing module; the light emitting diodes 12-2 in the light source module 12 are sequentially lightened under the control of the control processing module 4, meanwhile, the photoelectric sensor converts the received optical signals into electric signals for operation, the electric signals are sent to the control processing module and displayed on a display screen, and data are sent to mobile phone software through the Bluetooth module; the lithium battery provides voltage and working current for the photoelectric sensor, the display screen, the function keys, the Bluetooth module and the light source module through the control processing module.
As a further scheme of the utility model: the light shield is made of black silica gel, the opening is circular, the blades cannot be clamped by soft materials, the light shielding performance is good, and the stability of the light source is guaranteed.
Compared with the prior art, the utility model has the advantages that:
1 the utility model has simple light path design, small structure, convenient carrying and better accords with the ergonomic design;
In the utility model, the transmission method is adopted, the LED light sources under four wave bands are selected and integrated in the 5050 package, so that the volume of the detection light source is greatly reduced, and the detection method is suitable for detecting the nitrogen content of more plant leaves;
In the whole, the utility model is convenient to carry and can realize nondestructive rapid detection of the nitrogen content of the plant leaves.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is an external schematic view of a plant leaf nitrogen content detecting device of the present utility model.
FIG. 2 is a schematic diagram showing the inside of a plant leaf nitrogen content detecting device according to the present utility model.
Fig. 3 is a schematic perspective view of a light source unit of a plant leaf nitrogen content detecting device according to the present utility model.
FIG. 4 is a top view of a light source unit of a plant leaf nitrogen content detection apparatus according to the present utility model.
In the accompanying drawings:
1. a light shield; 2. pressing the probe; 3. a probe connection device; 4. a control processing module; 5. a display screen; 6. a function key; 7. a housing; 8. a Bluetooth module; 9. a lithium battery; 10. a power switch; 11. a dust-blocking plate; 12. a light source module; 2-1, a photoelectric sensor; 12-2-1, 960-990nm near infrared LED light source; 12-2-2, 710-730nm red LED light source; 12-2-3, 640-680nm red LED light source; 12-2-4, 440-480nm blue LED light source
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-4, the present utility model provides a technical solution:
FIGS. 1 to 4 show an embodiment of a nitrogen content detecting apparatus for plant leaves according to the present utility model. FIG. 1 is an external schematic view of a plant leaf nitrogen content detection apparatus of the present utility model; FIG. 2 is a schematic diagram of the inside of the plant leaf nitrogen content detection device of the present utility model; FIG. 3 is a schematic perspective view of a light source unit according to the present utility model; fig. 4 is a top view of the light source unit of the present utility model.
As shown in fig. 1 and 2, the utility model provides a plant leaf nitrogen content detection device, which comprises a light shield 1, a pressing probe 2, a probe connecting device 3, a control processing module 4, a display screen 5, a function key 6, a shell 7, a bluetooth module 8, a lithium battery 9, a power switch 10, a dust board 11 and a light source module 12; the pressing probe comprises a photoelectric sensor 2-1, a shading groove 2-2, an optical lens 2-3 and a sensor baffle plate 2-4; the photoelectric sensor 2-1 adopts a digital photoelectric sensor sensitive to visible light and near infrared; the probe connecting device 3 comprises a connecting shaft 3-1 and a torsion spring 3-2; the function keys 6 comprise a send key 6-1 and a page turning key 6-2; the light source module 12 comprises an objective table 12-1, four light emitting diodes 12-2 and a detection key 12-3, wherein the objective table 12-1 is provided with a light through hole 12-1, and the wavelength and the number of the light emitting diodes are respectively set according to the characteristic wavelength and the number of the characteristic wavelength required by the plant leaf transmission spectrum measurement; the light passing hole between the probe 2 and the light source module 12 is pressed, so that the light emitted by the light emitting diode is received by the photoelectric sensor through the light passing hole. Further, the four light sources of the detection device are arranged in an equidistant manner in the package of 5050.
Preferably, the pressing probe 2 comprises a photoelectric sensor 2-1, a shading groove 2-2, an optical lens 2-3 and a sensor baffle 2-4; the photoelectric sensor 2-1 adopts a digital photoelectric sensor sensitive to visible light and near infrared light, has wider detection range and higher sensitivity, and can automatically correct errors caused by increased infrared components; the probe connecting device 3 comprises a connecting shaft 3-1 and a torsion spring 3-2; the function keys 6 comprise a send key 6-1 and a page turning key 6-2; the light source module 12 comprises an objective table 12-1, four light emitting diodes 12-2 and a detection key 12-3, wherein the objective table 12-1 is provided with a light through hole 12-1, the wavelength and the number of the light emitting diodes 12-2 are respectively set according to the characteristic wavelength and the number of the characteristic wavelength required by the transmission spectrum measurement of the plant leaves, and the four light source wavelengths are respectively 440-480nm blue LED light sources, 640-680nm and 710-730nm two red LED light sources and 960-990nm near-infrared LED light sources; the light shield 1 is fixedly arranged in the light shield groove 2-2; the probe connecting device 3 is used for fixing the shell 7 and pressing the probe 2; the display 5 and the function keys 6 are fixed at the upper end of the shell 7; the control processing module 4 and the Bluetooth module 8 are arranged above the lithium battery 9; the lithium battery 9 is fixed at the bottom of the shell 7; the dust plate 11 is placed on the right side of the probe connection device 3.
Preferably, the photoelectric sensor 2-1, the display 5, the function keys 6, the Bluetooth module 8 and the light source module 12 perform data transmission with the control processing module 4 in the form of electric signals through wires and are controlled by the control processing module 4; the light emitting diodes 12-2 in the light source module 12 are sequentially lightened under the control of the control processing module 4, meanwhile, the photoelectric sensor 2-1 converts the received optical signals into electric signals for operation, the electric signals are sent to the control processing module 4 and displayed on the display screen 5, and data are sent to mobile phone software through the Bluetooth module 8; the lithium battery 9 supplies voltage and working current to the photoelectric sensor 2-1, the display 5, the function keys 6, the Bluetooth module 8 and the light source module 12 through the control processing module 4.
Preferably, the light shield 1 is made of black silica gel, the opening is circular, the blades cannot be clamped by soft materials, the light shielding performance is good, and the stability of the light source is guaranteed.
Preferably, the four light sources have wavelengths of 960-990nm near infrared LED light sources 12-2-1 respectively; 12-2-2 of 710-730nm red LED light source; 12-2-3 of 640-680nm red LED light source; 440-480nm blue LED light source 12-2-4 as shown in fig. 4.
Preferably, an optical lens 2-3 is placed at the light-passing hole 12-1-1 and the light-shielding groove 2-2 in the pressing probe 2, four light-emitting diodes 12-2 are placed right below the light-passing hole, and a limit groove for fixing a light source is formed in the housing, as shown in fig. 3.
Preferably, the power supply of the detection system is a rechargeable lithium battery 9, and the detection system is arranged in a battery groove in the shell, so that the detection system is convenient to detach. In this example, the battery compartment is disposed within the cavity of the hand grip of the housing 7, as shown in FIG. 2.
Preferably, the power switch 10 is installed at the side of the housing 7, the detection key 12-3 is installed at the light source module 12, and the page turning key 6-1 and the transmission key 6-2 are provided at the upper portion of the housing, as shown in fig. 1.
Preferably, the display 5 is disposed on top of the housing 7, and the housing is made of resin.
Preferably, the housing has an external dimension of 161mm×39mm×29mm in length×width×height, wherein the detecting portion has dimensions of 40mm×24mm×29mm in length×width×height, and is small in size and portable.
Calibration is carried out before detection: the photoelectric sensor 2-1 acquires original light intensity data of incident light with four wavelengths;
The intensity of light transmitted through the leaves of the plant was then detected: the photoelectric sensor 2-1 acquires light intensity data of incident light with four wavelengths transmitted through plant leaves;
Calculating and displaying: the chip of the detection device calculates the light intensity data according to a mathematical model of light intensity change and plant leaf nitrogen content, so as to obtain corresponding values and display the values, wherein the unit of the nitrogen content is mg/g.
Specifically, when calibration is performed, the power switch 10 of the detection device is turned on, and the detection key 12-3 of the detection device is pressed according to the subtitle prompt of pressing to calibrate on the display screen 5, so that four wavelengths of parallel incident light sequentially pass through the light passing hole 12-1-1 and the optical lens 2-3 in sequence and are received by the photoelectric sensor 2-1, and original light intensity data of the four wavelengths of incident light are obtained.
Specifically, when detecting the light intensity transmitted through the plant leaf, the plant leaf to be detected is placed at the light-transmitting hole 12-1-1 of the objective table 12-1, and the detection key 12-3 is triggered when the pressing probe 2 is pressed down, so that four wavelengths of parallel incident light sequentially pass through the light-transmitting hole 12-1-1, and the optical glass 2-3 in the plant leaf to be detected and the light shielding groove reach the photoelectric sensor.
The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.
Claims (5)
1. Plant leaf nitrogen content detection device, its characterized in that: the multifunctional portable electronic device comprises a light shield (1), a pressing probe (2), a probe connecting device (3), a control processing module (4), a display screen (5), function keys (6), a shell (7), a Bluetooth module (8), a lithium battery (9), a power switch (10), a dust board (11) and a light source module (12); the microprocessor adopted by the control processing module (4) has more application interfaces, is small in size and high in running speed, and ensures the efficiency of data processing; the Bluetooth module (8) adopts a dual-mode chip, the communication distance is 75m, the communication speed can reach 10KB/s, and the stability of data in high-speed transmission can be ensured.
2. The plant leaf nitrogen content detection apparatus according to claim 1, wherein: the pressing probe (2) comprises a photoelectric sensor (2-1), a shading groove (2-2), an optical lens (2-3) and a sensor baffle (2-4); the photoelectric sensor (2-1) adopts a digital photoelectric sensor which is sensitive to visible light and near infrared light, has wider detection range and higher sensitivity, and can automatically correct errors caused by increased infrared components; the probe connecting device (3) comprises a connecting shaft (3-1) and a torsion spring (3-2); the function keys (6) comprise a sending key (6-1) and a page turning key (6-2);
The light source module (12) comprises an objective table (12-1), four light emitting diodes (12-2) and a detection key (12-3), wherein the objective table (12-1) is provided with a light passing hole (12-1-1), the wavelength and the number of the light emitting diodes (12-2) are respectively set according to the characteristic wavelength and the characteristic wavelength number required by plant leaf transmission spectrum measurement, and the four light source wavelengths are respectively 440-480nm blue LED light sources, 640-680nm and 710-730nm two red LED light sources and 960-990nm near infrared LED light sources;
The light shield (1) is fixedly arranged in the light shield groove (2-2); the probe connecting device (3) is used for fixing the shell (7) and the pressing probe (2); the display screen (5) and the function keys (6) are fixed at the upper end of the shell (7);
The control processing module (4) and the Bluetooth module (8) are arranged above the lithium battery (9); the lithium battery (9) is fixed at the bottom of the shell (7); the dust plate (11) is arranged on the right side of the probe connecting device (3).
3. The plant leaf nitrogen content detection apparatus according to claim 2, wherein: the photoelectric sensor (2-1), the display screen (5), the function keys (6), the Bluetooth module (8) and the light source module (12) are used for carrying out data transmission in the form of electric signals with the control processing module (4) through leads and are controlled by the control processing module (4); the light emitting diodes (12-2) in the light source module (12) are sequentially lightened under the control of the control processing module (4), meanwhile, the photoelectric sensor (2-1) converts received optical signals into electric signals to operate, the electric signals are sent to the control processing module (4) and displayed on the display screen (5), and data are sent to mobile phone software through the Bluetooth module (8); the lithium battery (9) provides voltage and working current for the photoelectric sensor (2-1), the display screen (5), the function keys (6), the Bluetooth module (8) and the light source module (12) through the control processing module (4).
4. The plant leaf nitrogen content detection apparatus according to claim 2, wherein: the light shield (1) is made of black silica gel, the opening is circular, the blades cannot be clamped by soft materials, the light shielding performance is good, and the stability of the light source is guaranteed.
5. The plant leaf nitrogen content detection apparatus according to claim 2, wherein: when the pressing probe (2) is pressed down, the pressing probe (2) can be reset through the torsion spring (3-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321933751.XU CN220983118U (en) | 2023-07-21 | 2023-07-21 | Plant leaf nitrogen content detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321933751.XU CN220983118U (en) | 2023-07-21 | 2023-07-21 | Plant leaf nitrogen content detection device |
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| Publication Number | Publication Date |
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| CN220983118U true CN220983118U (en) | 2024-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321933751.XU Active CN220983118U (en) | 2023-07-21 | 2023-07-21 | Plant leaf nitrogen content detection device |
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| Country | Link |
|---|---|
| CN (1) | CN220983118U (en) |
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2023
- 2023-07-21 CN CN202321933751.XU patent/CN220983118U/en active Active
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