CN114824694A - Waveguide channel switching device - Google Patents
Waveguide channel switching device Download PDFInfo
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- CN114824694A CN114824694A CN202210448287.9A CN202210448287A CN114824694A CN 114824694 A CN114824694 A CN 114824694A CN 202210448287 A CN202210448287 A CN 202210448287A CN 114824694 A CN114824694 A CN 114824694A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000013011 mating Effects 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/06—Movable joints, e.g. rotating joints
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- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
The invention relates to the technical field of waveguide channel switching, and discloses a waveguide channel switching device which comprises a bottom plate and screws, wherein the switching device comprises a base, a limiting block, a through groove, a cylindrical groove and a switching assembly, the upper side of the bottom plate is fixedly connected with the base through the screws, the limiting block is fixedly connected to the inner side of the base, the through grooves are formed in four sides of the base, and the cylindrical groove is formed in the base. This waveguide pipe channel switching device, through switching the piece, including a motor, an end cap, a controller, and a cover plate, the third gear, the second gear, the mating reaction between first gear and the base, and then realized that the signal of first waveguide pipe input is exported by the second waveguide pipe, and the signal of third waveguide pipe input is exported by the fourth waveguide pipe, thereby reached and carried out the effect of fast switch over to the signal, thereby solved traditional waveguide pipe channel switching device and mainly realized the transformation to the signal through rotating the antenna, thereby caused the not convenient problem of switching signal.
Description
Technical Field
The invention relates to the technical field of waveguide tube channel switching, in particular to a waveguide tube channel switching device.
Background
The waveguide is used for transmitting ultrahigh frequency electromagnetic waves, pulse signals can be transmitted to a destination with extremely small loss, and the size of the inner diameter of the waveguide is different according to the wavelength of the transmitted signals; the waveguide tube channel switching device is mainly used in the radio fields of centimeter-wave and millimeter-wave radio communication, radar, navigation, hot backup and the like, and the waveguide tube propagation signals are switched through the waveguide tube channel switching device.
The existing waveguide channel switching device mainly has the following technical defects: firstly, when the hot backup operation is carried out, signals in the waveguide tube need to be switched, and when the channel is changed, the traditional waveguide tube channel switching device mainly realizes the conversion of the signals by rotating an antenna, and the operation of rotating the antenna is complex, so that the problem of inconvenient signal switching is caused; secondly, the traditional antenna device for switching signals needs a plurality of components, so that the structure of the antenna device is complex, and meanwhile, the number of parts is large, so that the manufacturing cost and the maintenance cost are high, and the problem of high equipment cost is caused.
Disclosure of Invention
The present invention is directed to a waveguide channel switching device to solve the problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a waveguide tube channel switching device comprises a bottom plate and screws, wherein a conversion device is fixedly mounted on the upper side of the bottom plate through the screws, a protection device is fixedly mounted on the upper side of the conversion device through the screws, a pipeline device is fixedly mounted on the outer sides of the conversion device and the protection device through the screws, and a power device is arranged on the upper side of the protection device;
the conversion device comprises a base, limiting blocks, through grooves, cylindrical grooves and a switching assembly, wherein the base is fixedly connected to the upper side of the bottom plate through screws, the limiting blocks are fixedly connected to the inner side of the base, the through grooves are formed in four sides of the base, the cylindrical grooves are formed in the base, and the switching assembly is rotatably connected to the upper side of the base.
Further, the structure of switching subassembly includes switches the piece, switches passageway, cylinder piece, arc restriction groove and triangle air discharge duct, the upside of base rotates and is connected with the switching piece, the downside fixedly connected with cylinder piece of switching piece, arc restriction groove and triangle air discharge duct have been seted up to the lower lateral wall of switching piece, the switching passageway has been seted up to the upper lateral wall of switching piece.
The electromagnetic wave signal of being input by the third waveguide lets in second waveguide pipe department through another switching channel of seting up on the switching piece, then the second waveguide pipe will distinguish and transmit another external signal receiver with the electromagnetic wave signal of first waveguide pipe input, when needs switch the equipment passageway, the starter motor, make the motor drive the third gear and rotate, then third gear engagement drives the second gear and rotates, make second gear engagement drive first gear, make the switching piece along clockwise rotation 90 degrees, because be provided with the arc restriction groove corresponding with the restriction piece on limiting piece and the switching channel on the base, make the turned angle of switching piece can restrict 90 degrees.
Further, the pipe device comprises a first waveguide pipe, a second waveguide pipe, a third waveguide pipe, a fourth waveguide pipe and a fifth waveguide pipe, the front side of the base is connected with the first waveguide pipe through a screw fixedly, the left side of the base is connected with the second waveguide pipe through a screw fixedly, the lower side of the base is connected with the third waveguide pipe through a screw fixedly, the right side of the base is connected with the fourth waveguide pipe through a screw fixedly, and the right side of the fourth waveguide pipe is connected with the fifth waveguide pipe fixedly.
Through external electromagnetic wave emitter from first waveguide, the electromagnetic wave signal of third waveguide with the difference is inputed respectively, the switching channel that the electromagnetic wave signal of input passes through to set up on the switching block lets in fourth waveguide department in the first waveguide, because the right side fixedly connected with fifth waveguide of fourth waveguide, the upside of fourth waveguide of while is provided with the screw hole, make its upside can other waveguide of fixedly connected with, and then realized the electromagnetic wave signal that will be inputed by first waveguide department can be inputed the purpose in the external signal receiving device through fifth waveguide and another waveguide, thereby reached and to realize the purpose of binary channels transmission signal, make position equipment passageway signal more stable.
Further, the protection device comprises a first cover plate, a second cover plate and a circular groove, the upper side of the switching block is fixedly connected with the first cover plate through a screw, the upper side of the first cover plate is rotatably connected with the second cover plate, the second cover plate is fixedly connected with the base through a screw, and the first cover plate is provided with a circular groove corresponding to the switching block.
Further, power device includes first gear, second gear, bearing rod, third gear and motor, the upside fixedly connected with motor of bottom plate, the upside transmission of motor is connected with the third gear, the left downside meshing of third gear has the second gear, the inboard rotation of second gear is connected with the bearing rod, the bearing rod is fixed connection with the bottom plate, the left downside meshing of second gear has first gear, first gear is fixed connection with first apron.
After the switching block rotates clockwise by 90 degrees, the positions of two switching channels formed in the switching block are converted, so that the first waveguide tube and the second waveguide tube are communicated through the switching block, the fourth waveguide tube and the third waveguide tube are communicated through another switching block, the signal input by the first waveguide tube is output by the second waveguide tube, the signal input by the third waveguide tube is output by the fourth waveguide tube, and the effect of rapidly switching the signal is achieved.
Furthermore, the first waveguide and the third waveguide are identical in size and shape, and inner walls of the first waveguide, the second waveguide, the third waveguide, the fourth waveguide and the fifth waveguide are rough surfaces.
Further, the switching channel corresponds to the first waveguide, the second waveguide, the third waveguide and the fourth waveguide, the cylindrical block is matched with the cylindrical groove, and the arc-shaped limiting groove corresponds to the limiting block.
Compared with the prior art, the invention provides a waveguide channel switching device, which has the following beneficial effects:
1. this waveguide pipe channel switching device, through the mating reaction between first waveguide pipe, switching block, fourth waveguide pipe and the fifth waveguide pipe, and then realized will be by the electromagnetic wave signal of first waveguide pipe department input can be through the purpose of fifth waveguide pipe and another waveguide pipe input to external receiving signal device in to reach the purpose that can realize the binary channels transmission signal, makeed position equipment channel signal more stable.
2. This waveguide pipe channel switching device, through switching the piece, including a motor, an end cap, a controller, and a cover plate, the third gear, the second gear, the mating reaction between first gear and the base, and then realized that the signal of first waveguide pipe input is exported by the second waveguide pipe, and the signal of third waveguide pipe input is by the purpose of fourth waveguide pipe output, thereby reached and carried out the effect of fast switch over to the signal, thereby solved and need to switch over the signal in the waveguide pipe carrying out the hot backup operation, when changing the passageway, traditional waveguide pipe channel switching device mainly realizes the transformation to the signal through rotating the antenna, it is complicated to rotate the antenna operation, thereby cause the not convenient problem of switching signal.
3. This waveguide pipe channel auto-change over device, because this device structure is less, the purpose that reaches the signal switching that simultaneously can be quick, and then solved the traditional antenna device who is used for switching over the signal, need a plurality of subassemblies to constitute for antenna device's structure is complicated, and the part is more simultaneously, leads to its manufacturing cost and cost of maintenance higher, thereby causes the higher problem of equipment cost.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic front perspective view of a first cover plate according to the present invention;
FIG. 3 is a schematic perspective view of a switching block and base assembly according to the present invention;
FIG. 4 is a schematic perspective view of a base plate according to the present invention;
FIG. 5 is a schematic perspective view of a bearing rod according to the present invention;
FIG. 6 is a perspective view of the protection device of the present invention;
FIG. 7 is a schematic perspective view of the front side of the switching block according to the present invention;
FIG. 8 is a schematic perspective view of the rear side of the switching block according to the present invention;
FIG. 9 is a schematic perspective view of the front side of the base of the present invention;
fig. 10 is a schematic perspective view of the back of the base of the present invention.
In the figure: 1. a base plate; 2. a conversion device; 21. a base; 22. a limiting block; 23. a through groove; 24. a cylindrical groove; 25. a switching component; 251. a switching block; 252. switching channels; 253. a cylindrical block; 254. an arc-shaped limiting groove; 255. a triangular exhaust groove; 3. a pipe arrangement; 31. a first waveguide; 32. a second waveguide; 33. a third waveguide; 34. a fourth waveguide; 35. a fifth waveguide; 4. a guard; 41. a first cover plate; 42. a second cover plate; 43. a circular groove; 5. a power plant; 51. a first gear; 52. a second gear; 53. a bearing rod; 54. a third gear; 55. an electric motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Examples
Referring to fig. 1 to 10, a waveguide channel switching device includes a bottom plate 1 and screws, a conversion device 2 is fixedly mounted on the upper side of the bottom plate 1 through the screws, a protection device 4 is fixedly mounted on the upper side of the conversion device 2 through the screws, a pipeline device 3 is fixedly mounted on the outer sides of the conversion device 2 and the protection device 4 through the screws, and a power device 5 is disposed on the upper side of the protection device 4;
Further, the structure of the switching assembly 25 includes a switching block 251, a switching channel 252, a cylindrical block 253, an arc-shaped limiting groove 254 and a triangular exhaust groove 255, the upper side of the base 21 is rotatably connected with the switching block 251, the lower side of the switching block 251 is fixedly connected with the cylindrical block 253, the arc-shaped limiting groove 254 and the triangular exhaust groove 255 are formed in the lower side wall of the switching block 251, and the switching channel 252 is formed in the upper side wall of the switching block 251.
The electromagnetic wave signal input by the third waveguide 33 is introduced to the second waveguide 32 through another switching channel 252 opened on the switching block 251, then the second waveguide 32 transmits the electromagnetic wave signal input by the first waveguide 31 to another external signal receiving device, when the equipment channel needs to be switched, the motor 55 is started, so that the motor 55 drives the third gear 54 to rotate, then the third gear 54 is meshed to drive the second gear 52 to rotate, so that the second gear 52 is meshed to drive the first gear 51, then the switching block 251 rotates 90 degrees clockwise, because the limiting block 22 is arranged on the base 21 and the arc-shaped limiting groove 254 corresponding to the limiting block 22 is opened on the switching channel 252, the rotation angle of the switching block 251 can be limited to 90 degrees.
Further, the duct device 3 includes a first waveguide 31, a second waveguide 32, a third waveguide 33, a fourth waveguide 34, and a fifth waveguide 35, the first waveguide 31 is fixedly connected to the front side of the base 21 by screws, the second waveguide 32 is fixedly connected to the left side of the base 21 by screws, the third waveguide 33 is fixedly connected to the lower side of the base 21 by screws, the fourth waveguide 34 is fixedly connected to the right side of the base 21 by screws, and the fifth waveguide 35 is fixedly connected to the right side of the fourth waveguide 34.
Different electromagnetic wave signals are respectively input from the first waveguide tube 31 and the third waveguide tube 33 through the external electromagnetic wave transmitting device, the electromagnetic wave signals input into the first waveguide tube 31 are introduced into the fourth waveguide tube 34 through the switching channel 252 formed in the switching block 251, the fifth waveguide tube 35 is fixedly connected to the right side of the fourth waveguide tube 34, a threaded hole is formed in the upper side of the fourth waveguide tube 34, other waveguide tubes can be fixedly connected to the upper side of the fourth waveguide tube, the purpose that the electromagnetic wave signals input from the first waveguide tube 31 can be input into the external signal receiving device through the fifth waveguide tube 35 and the other waveguide tube is achieved, the purpose of dual-channel signal transmission is achieved, and the channel signals of the position equipment are more stable.
Further, the protection device 4 includes a first cover plate 41, a second cover plate 42 and a circular groove 43, the upper side of the switching block 251 is fixedly connected with the first cover plate 41 through a screw, the upper side of the first cover plate 41 is rotatably connected with the second cover plate 42, the second cover plate 42 is fixedly connected with the base 21 through a screw, and the circular groove 43 corresponding to the switching block 251 is formed in the first cover plate 41.
Further, the power device 5 includes a first gear 51, a second gear 52, a bearing rod 53, a third gear 54 and a motor 55, the motor 55 is fixedly connected to the upper side of the bottom plate 1, the third gear 54 is connected to the upper side of the motor 55 in a transmission manner, the second gear 52 is meshed with the left lower side of the third gear 54, the bearing rod 53 is rotatably connected to the inner side of the second gear 52, the bearing rod 53 is fixedly connected to the bottom plate 1, the first gear 51 is meshed with the left lower side of the second gear 52, and the first gear 51 is fixedly connected to the first cover plate 41.
After the switching block 251 rotates clockwise by 90 degrees, the positions of the two switching channels 252 formed in the switching block 251 are converted, so that the first waveguide 31 and the second waveguide 32 are communicated through the switching block 251, the fourth waveguide 34 and the third waveguide 33 are communicated through the other switching block 251, and further, the signal input by the first waveguide 31 is output by the second waveguide 32, and the signal input by the third waveguide 33 is output by the fourth waveguide 34, so that the effect of rapidly switching the signal is achieved.
Further, the first waveguide 31 and the third waveguide 33 have the same size and the same shape, and the inner walls of the first waveguide 31, the second waveguide 32, the third waveguide 33, the fourth waveguide 34, and the fifth waveguide 35 are rough surfaces.
Further, the switching path 252 corresponds to the first waveguide 31, the second waveguide 32, the third waveguide 33, and the fourth waveguide 34, the cylindrical block 253 is fitted to the cylindrical groove 24, and the arc-shaped restriction groove 254 corresponds to the restriction block 22.
The specific use mode and function of the embodiment are as follows:
during the use, at first, different electromagnetic wave signals are respectively input from the first waveguide 31 and the third waveguide 33 through the external electromagnetic wave transmitting device, the electromagnetic wave signal input in the first waveguide 31 is introduced into the fourth waveguide 34 through the switching channel 252 formed in the switching block 251, because the right side of the fourth waveguide 34 is fixedly connected with the fifth waveguide 35, and the upper side of the fourth waveguide 34 is provided with a threaded hole, other waveguides can be fixedly connected with the upper side of the fourth waveguide, and then the purpose that the electromagnetic wave signal input from the first waveguide 31 can be input into the external signal receiving device through the fifth waveguide 35 and the other waveguides is realized, thereby the purpose of realizing double-channel signal transmission is achieved, and the channel signal of the position equipment is more stable.
Further, the electromagnetic wave signal input by the third waveguide 33 is introduced to the second waveguide 32 through another switching channel 252 formed on the switching block 251, then the second waveguide 32 transmits the electromagnetic wave signal input by the first waveguide 31 to another external signal receiving device, when the device channel needs to be switched, the motor 55 is started, so that the motor 55 drives the third gear 54 to rotate, then the third gear 54 is meshed to drive the second gear 52 to rotate, so that the second gear 52 is meshed to drive the first gear 51, then the switching block 251 rotates 90 degrees clockwise, because the limiting block 22 is arranged on the base 21 and the switching channel 252 is formed with the arc-shaped limiting groove 254 corresponding to the limiting block 22, the rotation angle of the switching block 251 can be limited to 90 degrees.
Further, after the switching block 251 rotates clockwise by 90 degrees, the positions of the two switching channels 252 formed in the switching block 251 are converted, so that the first waveguide 31 and the second waveguide 32 are communicated through the switching block 251, the fourth waveguide 34 and the third waveguide 33 are communicated through the other switching block 251, and therefore, the signal input by the first waveguide 31 is output by the second waveguide 32, and the signal input by the third waveguide 33 is output by the fourth waveguide 34, thereby achieving the effect of rapidly switching the signal.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a waveguide pipe channel switching device, includes bottom plate (1), screw, its characterized in that: the upper side of the bottom plate (1) is fixedly provided with a conversion device (2) through screws, the upper side of the conversion device (2) is fixedly provided with a protection device (4) through screws, the outer sides of the conversion device (2) and the protection device (4) are fixedly provided with a pipeline device (3) through screws, and the upper side of the protection device (4) is provided with a power device (5);
the conversion device (2) comprises a base (21), limiting blocks (22), through grooves (23), cylindrical grooves (24) and a switching assembly (25), wherein the base (21) is fixedly connected to the upper side of the bottom plate (1) through screws, the limiting blocks (22) are fixedly connected to the inner side of the base (21), the through grooves (23) are formed in the four sides of the base (21), the cylindrical grooves (24) are formed in the base (21), and the switching assembly (25) is rotatably connected to the upper side of the base (21).
2. The waveguide channel switching apparatus according to claim 1, wherein: the structure of the switching assembly (25) comprises a switching block (251), a switching channel (252), a cylindrical block (253), an arc-shaped limiting groove (254) and a triangular exhaust groove (255), the upper side of the base (21) is rotatably connected with the switching block (251), the cylindrical block (253) is fixedly connected to the lower side of the switching block (251), the arc-shaped limiting groove (254) and the triangular exhaust groove (255) are formed in the lower side wall of the switching block (251), and the switching channel (252) is formed in the upper side wall of the switching block (251).
3. The waveguide channel switching apparatus according to claim 1, wherein: pipe device (3) include first waveguide (31), second waveguide (32), third waveguide (33), fourth waveguide (34) and fifth waveguide (35), there is first waveguide (31) screw fixedly connected with the front side of base (21), there is second waveguide (32) screw fixedly connected with the left side of base (21), there is third waveguide (33) screw fixedly connected with the downside of base (21), there is fourth waveguide (34) screw fixedly connected with the right side of base (21), there is fifth waveguide (35) right side fixedly connected with of fourth waveguide (34).
4. The waveguide channel switching apparatus according to claim 2, wherein: the protection device (4) comprises a first cover plate (41), a second cover plate (42) and a circular groove (43), the upper side of the switching block (251) is fixedly connected with the first cover plate (41) through a screw, the upper side of the first cover plate (41) is rotatably connected with the second cover plate (42), the second cover plate (42) is fixedly connected with the base (21) through a screw, and the circular groove (43) corresponding to the switching block (251) is formed in the first cover plate (41).
5. The waveguide channel switching apparatus according to claim 4, wherein: power device (5) include first gear (51), second gear (52), bearing rod (53), third gear (54) and motor (55), upside fixedly connected with motor (55) of bottom plate (1), the upside transmission of motor (55) is connected with third gear (54), the left downside meshing of third gear (54) has second gear (52), the inboard rotation of second gear (52) is connected with bearing rod (53), bearing rod (53) are fixed connection with bottom plate (1), the left downside meshing of second gear (52) has first gear (51), first gear (51) are fixed connection with first apron (41).
6. A waveguide channel switching apparatus according to claim 3, wherein: the first waveguide (31) and the third waveguide (33) are identical in size and shape, and inner walls of the first waveguide (31), the second waveguide (32), the third waveguide (33), the fourth waveguide (34) and the fifth waveguide (35) are rough surfaces.
7. A waveguide channel switching apparatus as claimed in claim 2 or 3, wherein: the switching channel (252) corresponds to the first waveguide tube (31), the second waveguide tube (32), the third waveguide tube (33) and the fourth waveguide tube (34), the cylindrical block (253) is matched with the cylindrical groove (24), and the arc-shaped limiting groove (254) corresponds to the limiting block (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210448287.9A CN114824694A (en) | 2022-04-27 | 2022-04-27 | Waveguide channel switching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210448287.9A CN114824694A (en) | 2022-04-27 | 2022-04-27 | Waveguide channel switching device |
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| CN114824694A true CN114824694A (en) | 2022-07-29 |
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| CN202210448287.9A Pending CN114824694A (en) | 2022-04-27 | 2022-04-27 | Waveguide channel switching device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115441142A (en) * | 2022-08-16 | 2022-12-06 | 安徽阖煦微波技术有限公司 | Microwave transmission device and use method thereof |
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| RU2456718C1 (en) * | 2011-04-04 | 2012-07-20 | Открытое акционерное общество "Корпорация "Фазотрон-научно-исследовательский институт радиостроения | Waveguide switch |
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| CN109728383A (en) * | 2018-11-28 | 2019-05-07 | 中国航天时代电子有限公司 | A kind of novel sequence switching waveguide switch |
| CN209357880U (en) * | 2019-03-11 | 2019-09-06 | 成都迅翼卫通科技有限公司 | A kind of waveguide tube signals switching device and waveguide tube signals R-T unit |
| CN112311427A (en) * | 2020-11-18 | 2021-02-02 | 成都迅翼卫通科技有限公司 | Satellite communication receiving and transmitting polarization switching control device |
| CN114335929A (en) * | 2022-01-19 | 2022-04-12 | 中国电子科技集团公司第十研究所 | Waveguide switch with novel structure |
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2022
- 2022-04-27 CN CN202210448287.9A patent/CN114824694A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4617538A (en) * | 1983-02-07 | 1986-10-14 | Nelson Victor H | Microwave waveguide switch assembly |
| RU2456718C1 (en) * | 2011-04-04 | 2012-07-20 | Открытое акционерное общество "Корпорация "Фазотрон-научно-исследовательский институт радиостроения | Waveguide switch |
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| CN112311427A (en) * | 2020-11-18 | 2021-02-02 | 成都迅翼卫通科技有限公司 | Satellite communication receiving and transmitting polarization switching control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115441142A (en) * | 2022-08-16 | 2022-12-06 | 安徽阖煦微波技术有限公司 | Microwave transmission device and use method thereof |
| CN115441142B (en) * | 2022-08-16 | 2023-05-26 | 安徽阖煦微波技术有限公司 | Microwave transmission device and application method thereof |
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