CN116559930A - Plastic flash detector for camera - Google Patents
Plastic flash detector for camera Download PDFInfo
- Publication number
- CN116559930A CN116559930A CN202310710272.XA CN202310710272A CN116559930A CN 116559930 A CN116559930 A CN 116559930A CN 202310710272 A CN202310710272 A CN 202310710272A CN 116559930 A CN116559930 A CN 116559930A
- Authority
- CN
- China
- Prior art keywords
- camera
- flash detector
- worm
- protective shell
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 22
- 230000001681 protective effect Effects 0.000 claims abstract description 55
- 239000013078 crystal Substances 0.000 claims abstract description 14
- 230000007306 turnover Effects 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 23
- 238000003384 imaging method Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 7
- 239000000428 dust Substances 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005251 gamma ray Effects 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 210000001835 viscera Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229940121896 radiopharmaceutical Drugs 0.000 description 1
- 239000012217 radiopharmaceutical Substances 0.000 description 1
- 230000002799 radiopharmaceutical effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/161—Applications in the field of nuclear medicine, e.g. in vivo counting
- G01T1/164—Scintigraphy
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/203—Measuring radiation intensity with scintillation detectors the detector being made of plastics
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Molecular Biology (AREA)
- High Energy & Nuclear Physics (AREA)
- General Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Optics & Photonics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine (AREA)
Abstract
The invention discloses a plastic flash detector for a camera, which comprises a mounting frame and a turnover unit, wherein the mounting frame is provided with a plurality of mounting holes; and (3) mounting frame: the upper surface of the shell is provided with threaded holes which are uniformly distributed; and a turnover unit: the camera comprises a supporting shaft and a middle frame, wherein the supporting shaft is respectively connected to the lower end of a mounting frame through a bearing in a rotating manner, the middle frame is arranged between the two supporting shafts, the front end and the rear end of the middle frame are respectively connected with rotating shafts in a rotating manner, a protective shell is arranged between the two rotating shafts, a collimator, a scintillation crystal and a light guide are sequentially arranged inside the protective shell from bottom to top, the upper end of the protective shell is provided with uniformly distributed photomultiplier tubes through a supporting frame, the output end of each photomultiplier tube is electrically connected with the input end of a camera controller, the plastic flash detector for the camera can perform vertical and longitudinal detection, the angle of detection can be adjusted simultaneously, the positioning accuracy is good, the application range is wide, and the imaging quality of the camera is improved.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a plastic flash detector for a camera.
Background
Along with the development of society and scientific technology, the kind of medical instrument is also more and more complete, its gamma camera is one kind among the medical instrument, the radionuclide distribution in human viscera ware can be imaged once to the gamma camera, simultaneously can dynamic observation, show, record the metabolism condition of radiopharmaceutical in human viscera ware, the gamma camera generally needs to use the plastic flash detector to detect gamma ray, current plastic flash detector comprises collimator, scintillation crystal, light guide and photomultiplier pipeline etc. gamma ray that sends from the source through collimating aperture is projected to imaging record system corresponding interval, the ray is absorbed by scintillation crystal in this interval, and change the fluorescent photon number that is proportional with energy deposition, the photon propagates on the scintillator, finally throw to the photomultiplier and produce the signal of telecommunication, then transmit to camera system, simple structure stability in use is good, but the detection component in the plastic flash detector generally is fixed setting, the detection angle is generally unable to be adjusted, and then the detection direction is certain, the range of use of influence, simultaneously the quality of imaging of the camera is unfavorable for the detection angle of the multiple influence.
Disclosure of Invention
The invention aims to overcome the existing defects, provides the plastic flash detector for the camera, can perform vertical and longitudinal detection, can adjust the detection angle, has good positioning accuracy and wide application range, improves the imaging quality of the camera, and can effectively solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: a plastic flash detector for a camera comprises a mounting frame and a turnover unit;
and (3) mounting frame: the upper surface of the shell is provided with threaded holes which are uniformly distributed;
and a turnover unit: the camera comprises a supporting shaft and a middle frame, wherein the supporting shaft is respectively connected to the lower end of a mounting frame through a bearing in a rotating manner, the middle frame is arranged between the two supporting shafts, the front end and the rear end of the middle frame are respectively connected with rotating shafts in a rotating manner, a protecting shell is arranged between the two rotating shafts, a collimator, a scintillation crystal and a light guide are sequentially arranged inside the protecting shell from bottom to top, the upper end of the protecting shell is provided with a photomultiplier which is uniformly distributed through a supporting frame, the output end of the photomultiplier is electrically connected with the input end of a camera controller, vertical and longitudinal detection can be performed, the detected angle can be adjusted simultaneously, the positioning accuracy is good, the application range is wide, and the imaging quality of a camera is improved.
Further, the overturning unit comprises a worm wheel and a worm, the worm is rotationally connected to the left end of the mounting frame through a bearing, the worm wheel is arranged at the left end of the left supporting shaft, the worm is meshed with the worm wheel and is connected, and the rotation and self-locking of the supporting shaft are conveniently controlled.
Further, the turnover unit further comprises a motor, the motor is arranged at the left end of the mounting frame, an input shaft of the motor is fixedly connected with the upper end of the worm, and the input end of the motor is electrically connected with the output end of the camera controller, so that the worm can be conveniently driven to rotate.
Further, the left end of mounting bracket is equipped with the safety cover, and worm wheel and worm all are located the inside of safety cover, protect inside spare part.
Further, the right-hand member of well frame upper surface is equipped with round pin axle one, and the extrados rotation of round pin axle one is connected with electric putter, and the top of protecting crust front end is equipped with round pin axle two, and electric putter's the hole of changeing of flexible end is connected with round pin axle two rotations, and electric putter's input electricity is connected the output of camera controller, makes things convenient for the regulation of protecting crust angle.
Further, a third pin roll is arranged above the front end of the middle frame, a tension spring is arranged between the third pin roll and the second pin roll, tension is provided for the protective shell, and free shaking of the protective shell is avoided.
Further, the left end and the right end of the protective shell are respectively provided with an arc block, the arc blocks are respectively in sliding connection with the arc grooves on the inner cambered surface of the middle frame, the axis of the circle where the outer cambered surface of the arc blocks is located coincides with the axis of the rotating shaft, and the stability of the protective shell is enhanced.
Further, the upper side wall of the protective shell is provided with an inclination sensor, and the output end of the inclination sensor is electrically connected with the input end of the camera controller, so that the detection of the inclination of the protective shell is facilitated.
Furthermore, the lower extreme of protecting crust is equipped with the dust guard, avoids the dust to enter into the inside of collimator.
Compared with the prior art, the invention has the beneficial effects that: the plastic flash detector for the camera has the following advantages:
1. when the vertical detection is needed, the camera controller controls the motor to operate, the output shaft of the motor drives the worm to rotate, the worm drives the left support shaft to rotate through the worm wheel, the support shaft drives the middle frame to rotate, the middle frame drives the protective shell to rotate around the axis of the support shaft through the rotating shaft, the protective shell drives the internal parts to synchronously rotate, meanwhile, the inclination angle of the protective shell is detected by the inclination angle sensor, the inclination angle of the protective shell is converted into an electric signal to be transmitted to the camera controller, after the protective shell rotates ninety degrees around the axis of the support shaft, the camera controller controls the motor to stop rotating, and then the collimator, the scintillation crystal, the light guide and the photomultiplier are longitudinally detected.
2. The angle about the protective housing can be adjusted to the in-process of surveying, and then can carry out the detection of multiple angles, camera controller control electric putter operation during the regulation, electric putter's flexible end stretches out or contracts, and then can drive round pin axle two and remove, round pin axle two drives the protective housing and revolute the axle center of rotating shaft and rotate, the protective housing can drive inside spare part and carry out synchronous rotation, at the in-process of surveying, can adjust the angle of protective housing and inside detecting element, the fine setting of convenient detection in-process has promoted the imaging quality of detection effect and camera.
3. The third pin shaft provides an installation position for the tension spring, the tension spring provides downward tension for the second pin shaft, the second pin shaft provides downward acting force for the protective shell, free shaking of the protective shell caused by a gap between the second pin shaft and the joint of the first pin shaft and the electric push rod can be avoided, the arc block provides sliding support for the protective shell, positioning accuracy of the protective shell is guaranteed, convenience and accuracy in adjustment are guaranteed, and detection accuracy is guaranteed.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the inversion unit of the present invention;
FIG. 3 is a schematic cross-sectional view of a protective shell according to the present invention;
fig. 4 is a schematic structural view of the frame in the present invention.
In the figure: 1 mounting frame, 2 screw holes, 3 overturning units, 31 supporting shafts, 32 middle frames, 33 worm wheels, 34 worm screws, 35 motors, 4 rotating shafts, 5 protective shells, 6 collimators, 7 scintillation crystals, 8 light guides, 9 photomultiplier tubes, 10 protective covers, 11 pin shafts I, 12 pin shafts II, 13 electric push rods, 14 pin shafts III, 15 tension springs, 16 inclination angle sensors, 17 dust shields and 18 arc blocks.
Description of the embodiments
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present embodiment provides a technical solution: a plastic flash detector for a camera comprises a mounting frame 1 and a turnover unit 3;
mounting bracket 1: the upper surface of the camera frame is provided with threaded holes 2 which are uniformly distributed, and bolts penetrate through mounting holes of the camera frame before use to be in threaded connection with the threaded holes 2 on the mounting frame 1, so that the mounting frame 1 is fixed;
and a turnover unit 3: the device comprises a supporting shaft 31 and a middle frame 32, wherein the supporting shaft 31 is respectively connected to the lower end of a mounting frame 1 in a rotating way through bearings, the middle frame 32 is arranged between the two supporting shafts 31, the front end and the rear end of the middle frame 32 are respectively connected with rotating shafts 4 in a rotating way, a protecting shell 5 is arranged between the two rotating shafts 4, a collimator 6, a scintillation crystal 7 and a light guide 8 are sequentially arranged in the protecting shell 5 from bottom to top, photomultiplier tubes 9 which are uniformly distributed are arranged at the upper end in the protecting shell 5 through a supporting frame, the output end of the photomultiplier tubes 9 are electrically connected with the input end of a camera controller, when in use, a radioactive source is horizontally placed below the collimator 6, gamma rays emitted from the source are projected onto the scintillation crystal 7 through a collimation hole of the collimator 6, the rays are absorbed by the scintillation crystal and converted into fluorescent photon numbers which are proportional to energy deposition, and the photons propagate on the light guide 8, finally, the object is projected onto the photomultiplier tubes 9, the photomultiplier tubes 9 generate electric signals, then the output of each photomultiplier tube 9 transmits the electric signals to the input end of a camera controller through a preamplifier, the camera controller calculates the distribution of the ray emission interval of the object and then images, the turnover unit 3 comprises a worm wheel 33 and a worm 34, the worm 34 is rotatably connected to the left end of the mounting frame 1 through a bearing, the worm wheel 33 is arranged at the left end of a left supporting shaft 31, the worm 34 is meshed with the worm wheel 33, the turnover unit 3 further comprises a motor 35, the motor 35 is arranged at the left end of the mounting frame 1, the input shaft of the motor 35 is fixedly connected with the upper end of the worm 34, the input end of the motor 35 is electrically connected with the output end of the camera controller, when longitudinal detection is needed, the camera controller controls the motor 35 to operate, the output shaft of the motor 35 drives the worm 34 to rotate, the worm 34 drives the left support shaft 31 to rotate through the worm wheel 33, the support shaft 31 drives the middle frame 32 to rotate, the middle frame 32 drives the protective shell 5 to rotate around the axis of the support shaft 31 through the rotating shaft 4, the protective shell 5 drives internal parts to synchronously rotate, meanwhile, the inclination angle of the protective shell 5 is detected by the inclination sensor 16, the inclination angle of the protective shell 5 is converted into an electric signal and transmitted to the camera controller, when the protective shell 5 rotates ninety degrees around the axis of the support shaft 31, the camera controller controls the motor 35 to stop rotating, the collimator 6, the scintillation crystal 7, the light guide 8 and the photomultiplier 9 are further longitudinally detected, the left end of the mounting frame 1 is provided with the protective cover 10, the worm wheel 33 and the worm 34 are both positioned in the protective cover 10, the protective cover 10 protects internal parts, the upper side wall of the protective shell 5 is provided with the inclination sensor 16, the output end of the inclination sensor 16 is electrically connected with the input end of the camera controller, the lower end of the protective shell 5 is provided with the dust-proof plate 17, the dust-proof plate 17 is a polycarbonate plate, and dust is prevented from entering the interior of the collimator 6;
wherein: the right end of the upper surface of the middle frame 32 is provided with a first pin shaft 11, the outer cambered surface of the first pin shaft 11 is rotationally connected with an electric push rod 13, the first pin shaft 11 provides rotary support for the electric push rod 13, a second pin shaft 12 is arranged above the front end of the protective shell 5, a rotary hole of the telescopic end of the electric push rod 13 is rotationally connected with the second pin shaft 12, the input end of the electric push rod 13 is electrically connected with the output end of a camera controller, the left and right angles of the protective shell 5 can be adjusted in the detection process, the camera controller controls the electric push rod 13 to rotate during adjustment, the telescopic end of the electric push rod 13 stretches out or contracts, the second pin shaft 12 is driven to move, the second pin shaft 12 drives the protective shell 5 to rotate around the axis of the rotary shaft 4, the protective shell 5 can drive internal parts to synchronously rotate, the detection of multiple angles is carried out, a third pin shaft 14 is arranged above the front end of the middle frame 32, a tension spring 15 is arranged between the third pin 14 and the second pin shaft 12, the third pin 14 provides a mounting position for the tension spring 15, the second pin 12 is further provided with multiple angles of detection, the second pin 5 is further provided with a sliding block 18, and the two ends of the two arc-shaped protective shells are further provided with the two arc-shaped protective shells 18, the arc-shaped 18 are respectively, and the arc-shaped protective shell 18 is further provided with the arc-shaped 18 and the arc-shaped protective shell 5 is connected with the two arc-shaped protective shell 5.
The working principle of the plastic flash detector for the camera provided by the invention is as follows: before use, bolts are used to penetrate through mounting holes of a camera frame and are in threaded connection with threaded holes 2 on the mounting frame 1, and then fixing of the mounting frame 1 is completed, during use, a radioactive source is horizontally placed below a collimator 6, gamma rays emitted from the source pass through a dust-proof plate 17 and then are projected onto a scintillation crystal 7 through the collimating holes of the collimator 6, the rays are absorbed by the scintillation crystal and converted into fluorescent photons in proportion to energy deposition, the photons propagate on a light guide 8 and finally are projected onto a photomultiplier tube 9, the photomultiplier tube 9 generates an electric signal, then the output of each photomultiplier tube 9 transmits the electric signal to the input end of a camera controller through a preamplifier, the camera controller calculates the distribution of the ray emission interval of an object and then images, when longitudinal detection is needed, the camera controller controls the operation of a motor 35, the output shaft of the motor 35 drives the worm 34 to rotate, the worm 34 drives the left support shaft 31 to rotate through the worm wheel 33, the support shaft 31 drives the middle frame 32 to rotate, the middle frame 32 drives the protective shell 5 to rotate around the axis of the support shaft 31 through the rotating shaft 4, the protective shell 5 drives the internal parts to synchronously rotate, meanwhile, the inclination angle of the protective shell 5 is detected by the inclination angle sensor 16, the inclination angle of the protective shell 5 is converted into an electric signal to be transmitted to the camera controller, when the protective shell 5 rotates ninety degrees around the axis of the support shaft 31, the camera controller controls the motor 35 to stop rotating, the collimator 6, the scintillation crystal 7, the light guide 8 and the photomultiplier 9 are longitudinally detected, the angle of the protective shell 5 can be adjusted in the detecting process, the multi-angle detection can be further carried out, the camera controller controls the electric push rod 13 to operate during the adjusting, the telescopic end of the electric push rod 13 stretches out or contracts, and then the pin shaft II 12 is driven to move, the pin shaft II 12 drives the protective shell 5 to rotate around the axis of the rotating shaft 4, the protective shell 5 can drive internal parts to synchronously rotate, multi-angle detection can be further carried out, and the detection effect is improved.
It should be noted that, the motor 35, the photomultiplier tube 9, the electric push rod 13 and the tilt sensor 16 disclosed in the above embodiment may be freely configured according to practical application scenarios, the tilt sensor 16 is a tilt sensor with a model of tilfix, and the camera controller controls the motor 35, the photomultiplier tube 9, the electric push rod 13 and the tilt sensor 16 to work by a method commonly used in the prior art.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (9)
1. A plastic flash detector for a camera is characterized in that: comprises a mounting frame (1) and a turnover unit (3);
mounting bracket (1): the upper surface of the shell is provided with threaded holes (2) which are uniformly distributed;
overturning unit (3): the novel light source comprises supporting shafts (31) and a middle frame (32), wherein the supporting shafts (31) are respectively connected to the lower end of a mounting frame (1) through bearings in a rotating mode, the middle frame (32) is arranged between the two supporting shafts (31), the rotating shafts (4) are respectively connected to the front end and the rear end of the middle frame (32) in a rotating mode, a protecting shell (5) is arranged between the two rotating shafts (4), a collimator (6), a scintillation crystal (7) and a light guide (8) are sequentially arranged inside the protecting shell (5) from bottom to top, the upper end inside the protecting shell (5) is provided with photomultiplier tubes (9) which are evenly distributed through supporting frames, and the output end of each photomultiplier tube (9) is electrically connected with the input end of a camera controller.
2. A plastic flash detector for a camera as in claim 1, wherein: the overturning unit (3) comprises a worm wheel (33) and a worm (34), the worm (34) is rotatably connected to the left end of the installation frame (1) through a bearing, the worm wheel (33) is arranged at the left end of the left supporting shaft (31), and the worm (34) is meshed with the worm wheel (33).
3. A plastic flash detector for a camera as in claim 2, wherein: the turnover unit (3) further comprises a motor (35), the motor (35) is arranged at the left end of the mounting frame (1), an input shaft of the motor (35) is fixedly connected with the upper end of the worm (34), and the input end of the motor (35) is electrically connected with the output end of the camera controller.
4. A plastic flash detector for a camera as in claim 2, wherein: the left end of mounting bracket (1) is equipped with safety cover (10), and worm wheel (33) and worm (34) are located the inside of safety cover (10).
5. A plastic flash detector for a camera as in claim 1, wherein: the right-hand member of well frame (32) upper surface is equipped with round pin axle one (11), and the extrados rotation of round pin axle one (11) is connected with electric putter (13), and the top of protecting crust (5) front end is equipped with round pin axle two (12), and the rotation hole of electric putter (13) flexible end is connected with round pin axle two (12) rotation, and the output of camera controller is connected to the input electricity of electric putter (13).
6. A plastic flash detector for a camera as in claim 5, wherein: and a third pin shaft (14) is arranged above the front end of the middle frame (32), and a tension spring (15) is arranged between the third pin shaft (14) and the second pin shaft (12).
7. A plastic flash detector for a camera as in claim 1, wherein: arc blocks (18) are arranged at the left end and the right end of the protective shell (5), the arc blocks (18) are respectively connected with arc grooves on the inner cambered surface of the middle frame (32) in a sliding mode, and the axis of a circle where the outer cambered surface of the arc blocks (18) is located coincides with the axis of the rotating shaft (4).
8. A plastic flash detector for a camera as in claim 1, wherein: the upper side wall of the protective shell (5) is provided with an inclination sensor (16), and the output end of the inclination sensor (16) is electrically connected with the input end of the camera controller.
9. A plastic flash detector for a camera as in claim 1, wherein: the lower end of the protective shell (5) is provided with a dust-proof plate (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310710272.XA CN116559930A (en) | 2023-06-15 | 2023-06-15 | Plastic flash detector for camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310710272.XA CN116559930A (en) | 2023-06-15 | 2023-06-15 | Plastic flash detector for camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116559930A true CN116559930A (en) | 2023-08-08 |
Family
ID=87493104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310710272.XA Pending CN116559930A (en) | 2023-06-15 | 2023-06-15 | Plastic flash detector for camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116559930A (en) |
-
2023
- 2023-06-15 CN CN202310710272.XA patent/CN116559930A/en active Pending
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