CN113329572A - Communication management equipment based on Internet of things - Google Patents

Communication management equipment based on Internet of things Download PDF

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Publication number
CN113329572A
CN113329572A CN202110567530.4A CN202110567530A CN113329572A CN 113329572 A CN113329572 A CN 113329572A CN 202110567530 A CN202110567530 A CN 202110567530A CN 113329572 A CN113329572 A CN 113329572A
Authority
CN
China
Prior art keywords
main body
communication management
things
internet
dust
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
Application number
CN202110567530.4A
Other languages
Chinese (zh)
Inventor
张小清
王艳营
陈丽娟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heilongjiang University of Science and Technology
Original Assignee
Heilongjiang University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Heilongjiang University of Science and Technology filed Critical Heilongjiang University of Science and Technology
Priority to CN202110567530.4A priority Critical patent/CN113329572A/en
Publication of CN113329572A publication Critical patent/CN113329572A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details
    • H05K5/0217Mechanical details of casings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46Bases; Cases
    • H01R13/52Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5213Covers
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details
    • H05K5/0213Venting apertures; Constructional details thereof
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details
    • H05K5/0247Electrical details of casings, e.g. terminals, passages for cables or wiring
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details
    • H05K5/03Covers
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136Forced ventilation, e.g. by fans
    • H05K7/20145Means for directing air flow, e.g. ducts, deflectors, plenum or guides
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136Forced ventilation, e.g. by fans
    • H05K7/20172Fan mounting or fan specifications

Abstract

The invention belongs to the technical field of communication management equipment, and particularly relates to communication management equipment based on the Internet of things. The supporting rod arranged at the upper end of the main body ensures that the signal antenna is reliably fixed in use and avoids adverse effects caused by loosening and falling; the guide piece arranged at the rear end of the main body and the heat dissipation plate arranged on one side of the main body enable the internal elements of the main body to be uniformly cooled, and the heat dissipation plate is simple, quick and convenient to assemble and disassemble and replace; through setting up the dust proof box in main part front end, make the kneck effectively avoid the dust to pile up when not having the circuit to connect, reduce the jam degree improvement finishment of interface.

Description

Communication management equipment based on Internet of things
Technical Field
The invention belongs to the technical field of communication management equipment, and particularly relates to communication management equipment based on the Internet of things.
Background
The communication manager is also called a DPU, and has a plurality of downlink communication interfaces and one or more uplink network interfaces, and is equivalent to a front-end processor, i.e., a monitoring computer, and is used for sorting and aggregating the communication data of all the intelligent monitoring/protection devices in one substation, and then uploading the collected data to an upper-level main station system (a monitoring center background machine and a DCS) in real time to complete remote signaling and remote sensing functions. On the other hand, the remote control system receives commands issued by a background machine or a DCS and forwards the commands to an intelligent series unit in a substation, completes remote control of opening and closing of each switching device in a station or parameter setting of the device, and realizes remote control and remote regulation functions.
The original communication management machine is using to make inside a large amount of steam that produces, if can not in time cool down and cause the component to damage easily and influence the use, the electric wire confusion twines easily and is difficult to the arrangement together, and the kneck is piled up the dust easily and is difficult to the clearance easily, piles up for a long time and can influence the result of use to and signal antenna can't fix easy not hard up influence result of use.
Disclosure of Invention
The invention aims to provide communication management equipment based on the Internet of things, and aims to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a communication management device based on the Internet of things comprises a main body, wherein a wire arrangement board used for arranging and placing electric wires is arranged at the upper end of the main body, two ends of the wire arrangement board are rotatably connected with a connecting frame used for driving the wire arrangement board to move, a placing groove used for placing the electric wires is formed in the upper end of the wire arrangement board, a motor used for cooling internal elements of the main body is fixedly connected with the rear end of the main body, a guide piece used for guiding wind is arranged at a position, close to the motor, inside the main body, close to the rear end, a heat dissipation plate used for ventilating is slidably connected to one side of the main body, a signal antenna used for receiving signals is arranged at the upper end of the main body, a semicircular groove used for placing the signal antenna is formed in the upper end of the main body, a support rod used for supporting and fixing the signal antenna is arranged inside the semicircular groove, and a dust-proof box used for preventing dust from entering the inside of an interface is fixedly connected with the front end of the main body, one side of the front end of the dust-proof box is rotatably connected with a box door used for closing the dust-proof box.
According to the preferable technical scheme of the communication management equipment based on the Internet of things, a rotating shaft for fixing the connecting frame penetrates through one end of the connecting frame, and an elastic clamp for protecting an electric wire is arranged inside the placing groove.
According to the preferable technical scheme of the communication management equipment based on the Internet of things, the radiating fins used for rotating are arranged at the front ends of the motors, and the guide fins are of structures inclining towards the inner side.
According to the communication management equipment optimization technical scheme based on the Internet of things, the two ends of the heat dissipation plate are fixedly connected with the clamping plates, the two ends of one side of the main body are provided with the sliding grooves used for the sliding connection of the clamping plates, and the positioning pins used for fixing the heat dissipation plate are arranged above the front end of the clamping plates.
According to the communication management equipment optimization technical scheme based on the Internet of things, the lower end of the supporting rod is fixedly connected with an arc-shaped plate used for driving the supporting rod to slide, the lower end of the semicircular groove is provided with a slide way used for the arc-shaped plate to slide, and two ends of the slide way are both downwards provided with grooves.
According to the communication management equipment optimization technical scheme based on the Internet of things, one end of the box door is fixedly connected with an elastic pin used for driving the box door to close the dust-proof box, and one side of the upper end of the dust-proof box is provided with a groove parallel to the elastic pin.
According to the communication management equipment optimization technical scheme based on the Internet of things, the placing grooves and the elastic clamps are symmetrically arranged at two ends of the upper end of the wire arranging plate.
Compared with the prior art, the invention has the beneficial effects that: the supporting rod arranged at the upper end of the main body ensures that the signal antenna is reliably fixed in use, and adverse effects caused by loosening and falling are avoided; the guide piece arranged at the rear end of the main body and the heat dissipation plate arranged on one side of the main body enable the internal elements of the main body to be uniformly cooled, and the heat dissipation plate is simple, quick and convenient to assemble and disassemble and replace; through setting up the dust proof box in main part front end, make the kneck effectively avoid the dust to pile up when not having the circuit to connect, reduce the jam degree improvement finishment of interface.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the external structure of the present invention;
FIG. 2 is a schematic view of the connection between the motor and the main body according to the present invention;
FIG. 3 is a schematic view of the connection portion of the heat sink and the main body according to the present invention;
FIG. 4 is an enlarged partial view of part A of the present invention;
FIG. 5 is a partial enlarged view of the part B of the present invention;
in the figure: 1. a main body; 2. a wire arranging plate; 3. a connecting frame; 4. a rotating shaft; 5. a placement groove; 6. an elastic clip; 7. a dust-proof box; 8. a box door; 9. a motor; 10. a heat dissipation plate; 11. a signal antenna; 12. a semicircular groove; 13. a strut; 14. a heat sink; 15. a guide piece; 16. clamping a plate; 17. a chute; 18. positioning pins; 19. an arc-shaped plate; 20. a slideway; 21. and an elastic pin.
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. 1-5, the present invention provides the following technical solutions: a communication management device based on the Internet of things comprises a main body 1, wherein a wire arrangement board 2 used for arranging and placing electric wires is arranged at the upper end of the main body 1, two ends of the wire arrangement board 2 are rotatably connected with a connecting frame 3 used for driving the wire arrangement board 2 to move, a placing groove 5 used for placing the electric wires is formed in the upper end of the wire arrangement board 2, a motor 9 used for cooling internal elements of the main body 1 is fixedly connected to the rear end of the main body 1, a guide sheet 15 used for guiding wind is arranged in the main body 1 and close to the motor 9, a heat dissipation plate 10 used for ventilating is slidably connected to one side of the main body 1 and close to the rear end, a signal antenna 11 used for receiving signals is arranged at the upper end of the main body 1, a semicircular groove 12 used for placing the signal antenna 11 is formed in the upper end of the main body 1, a support rod 13 used for supporting and fixing the signal antenna 11 is arranged in the semicircular groove 12, a dust prevention box 7 used for preventing dust from entering the interior of an interface is fixedly connected to the front end of the main body 1, the front end one side of dust proof box 7 rotates and is connected with and is used for the closed chamber door 8 of dust proof box 7, and the opening part of 12 upper ends of semicircular groove is slightly less than the diameter in this embodiment.
Specifically, one end of the connecting frame 3 is provided with a rotating shaft 4 for fixing the connecting frame 3, an elastic clamp 6 for protecting the electric wire is arranged inside the placing groove 5, and the elastic clamp 6 is made of rubber in the embodiment.
Specifically, the front end of the motor 9 is provided with a heat sink 14 for rotation, the guide piece 15 is an inward inclined structure, and the motor 9 drives the heat sink 14 to rotate to generate wind power in this embodiment.
Specifically, both ends fixedly connected with cardboard 16 of heating panel 10, the spout 17 that is used for cardboard 16 sliding connection is offered at one side both ends of main part 1, and the front end top of cardboard 16 is provided with and is used for the locating pin 18 fixed with heating panel 10, and locating pin 18 passes through spring coupling in this embodiment in the upper end of cardboard 16.
Specifically, the lower extreme fixedly connected with of branch 13 is used for driving the gliding arc 19 of branch 13, and the lower extreme of half slot 12 is offered and is used for the gliding slide 20 of arc 19, and the slide 20 both ends are all seted up flutedly downwards, and there is the bolt lower extreme of arc 19 in this embodiment through spring coupling.
Specifically, the one end fixedly connected with of chamber door 8 is used for driving chamber door 8 with the closed elastic pin 21 of dust proof box 7, and dust proof box 7's upper end one side is seted up the recess and is on a parallel with elastic pin 21, closes isolated dust with chamber door 8 after the electric wire is pulled out in this embodiment.
Specifically, standing groove 5 and elastic clamp 6 are the symmetry setting at the 2 upper end both ends of winding displacement board, and winding displacement board 2 both sides all can carry out the arrangement of electric wire in this embodiment and place.
The working principle and the using process of the invention are as follows: according to the invention, the connecting frames 3 are connected through the rotating shaft 4, the wire arrangement board 2 is fixed on the inner side of the connecting frames 3, and further, the elastic clamps 6 are arranged on the inner sides of the placing grooves 5 at the two ends of the wire arrangement board 2, so that the positions, close to interfaces, of wires can be fixed in the elastic clamps 6 to prevent disorder, and the wire arrangement board 2 can be rotationally placed at the front end of the main body 1 through the rotating shaft 4; the guide piece 15 is arranged in the main body 1, so that the air generated by the rotation of the radiating fins 14 driven by the motor 9 is guided to each position in the main body 1 through the guide piece 15 to complete uniform and large-range cooling, the clamping plates 16 at two ends of the radiating plate 10 are clamped and connected to the sliding grooves 17 and slide inwards, and the positioning pins 18 arranged at the upper end of the radiating plate 10 close to the front end position after reaching a preset position are downwards slidably connected in the grooves arranged at the front end of the sliding grooves 17 to complete the fixing of the radiating plate 10; when the signal antenna 11 is erected, the supporting rod 13 fixedly connected to one side of the signal antenna 11 is driven to enable the arc-shaped plate 19 arranged at the lower end of the supporting rod 13 to slide outwards, and after the signal antenna 11 reaches a preset position, the plug pin at the lower end of the supporting rod 13 is automatically clamped downwards through the internal spring and is connected to the inside of the groove at one end of the slideway 20, so that the signal antenna 11 is fixed; set up dust proof box 7 and connect chamber door 8 through the hinge in the kneck of main part 1 front end one side at dust proof box 7 front end, through inwards pressing chamber door 8 will set up the spring pin 21 block of 8 front ends of chamber doors and connect in the inside completion of recess of 7 front ends opposite sides of dust proof box and close with the dust isolated outside.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a communication management equipment based on thing networking which characterized in that: comprises a main body (1), the upper end of the main body (1) is provided with a wire arranging plate (2) for arranging and placing wires, the two ends of the wire arranging plate (2) are rotatably connected with a connecting frame (3) for driving the wire arranging plate (2) to move, the upper end of the wire arranging plate (2) is provided with a placing groove (5) for placing the wires, the rear end of the main body (1) is fixedly connected with a motor (9) for cooling the internal elements of the main body (1), the position of the inside of the main body (1) close to the motor (9) is provided with a guide sheet (15) for guiding wind, one side of the main body (1) close to the rear end is slidably connected with a heat radiation plate (10) for ventilation, the upper end of the main body (1) is provided with a signal antenna (11) for receiving signals, the upper end of the main body (1) is provided with a semicircular groove (12) for placing the signal antenna (11), the inside of semicircle groove (12) is provided with and is used for supporting signal antenna (11) and fixed branch (13), the front end fixedly connected with of main part (1) is used for preventing the dust to get into inside dust proof box (7) of interface, the rotation of front end one side of dust proof box (7) is connected with and is used for with closed chamber door (8) of dust proof box (7).
2. The internet of things-based communication management device according to claim 1, wherein: one end of the connecting frame (3) is provided with a rotating shaft (4) for fixing the connecting frame (3) in a penetrating mode, and an elastic clamp (6) for protecting the electric wire is arranged inside the placing groove (5).
3. The internet of things-based communication management device according to claim 1, wherein: the front end of the motor (9) is provided with a radiating fin (14) used for rotating, and the guide fin (15) is of an inward inclined structure.
4. The internet of things-based communication management device according to claim 1, wherein: the heat dissipation plate is characterized in that clamping plates (16) are fixedly connected to two ends of the heat dissipation plate (10), sliding grooves (17) used for sliding connection of the clamping plates (16) are formed in two ends of one side of the main body (1), and positioning pins (18) used for fixing the heat dissipation plate (10) are arranged above the front ends of the clamping plates (16).
5. The internet of things-based communication management device according to claim 1, wherein: the lower extreme fixedly connected with of branch (13) is used for driving gliding arc (19) of branch (13), the gliding slide (20) that are used for arc (19) are seted up to the lower extreme of half slot (12), slide (20) both ends are all seted up flutedly downwards.
6. The internet of things-based communication management device according to claim 1, wherein: one end of the box door (8) is fixedly connected with an elastic pin (21) which is used for driving the box door (8) to close the dust-proof box (7), and one side of the upper end of the dust-proof box (7) is provided with a groove which is parallel to the elastic pin (21).
7. The internet of things-based communication management device according to claim 1, wherein: the placing grooves (5) and the elastic clamps (6) are symmetrically arranged at two ends of the upper end of the wire arranging plate (2).
CN202110567530.4A 2021-05-24 2021-05-24 Communication management equipment based on Internet of things Pending CN113329572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110567530.4A CN113329572A (en) 2021-05-24 2021-05-24 Communication management equipment based on Internet of things

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110567530.4A CN113329572A (en) 2021-05-24 2021-05-24 Communication management equipment based on Internet of things

Publications (1)

Publication Number Publication Date
CN113329572A true CN113329572A (en) 2021-08-31

Family

ID=77416556

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110567530.4A Pending CN113329572A (en) 2021-05-24 2021-05-24 Communication management equipment based on Internet of things

Country Status (1)

Country Link
CN (1) CN113329572A (en)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110304972A1 (en) * 2010-06-15 2011-12-15 Apple Inc. Small form factor desk top computer
CN203327446U (en) * 2013-07-04 2013-12-04 泰科电子(上海)有限公司 Wire-distributing frame used for cable and optical cable
CN206350019U (en) * 2016-12-16 2017-07-21 金海� A kind of high security router
CN108963414A (en) * 2018-06-22 2018-12-07 湖北泰和电气有限公司 A kind of perpendicular device of efficient antenna
CN209572021U (en) * 2019-05-20 2019-11-01 广州市祥云网络科技有限公司 A kind of message switching equipment of suitable indoor wall installation
CN209572002U (en) * 2019-05-20 2019-11-01 广州市祥云网络科技有限公司 A kind of multi-media classroom wireless network transmitter
CN209647665U (en) * 2019-04-16 2019-11-19 李坚涛 A kind of electric hand drill with scrap collection function
CN111642094A (en) * 2020-06-29 2020-09-08 东莞市凯勒帝数控科技有限公司 5G dual-frequency router convenient to clean
CN211580123U (en) * 2020-04-30 2020-09-25 梁福桃 Protection mechanism for router interface for industrial internet
CN211630300U (en) * 2020-04-07 2020-10-02 广西松贤科技有限公司 Wireless connection management module based on Internet of things
CN211789529U (en) * 2020-04-01 2020-10-27 湖北阿桑奇汽车电子科技有限公司 Antenna assembly applied to T-BOX system
CN212086226U (en) * 2020-06-17 2020-12-04 金华市中智物联科技有限公司 Anti-interference gateway for Internet of things
CN112600754A (en) * 2020-12-31 2021-04-02 太平洋电信股份有限公司 SDN network route screening device based on artificial intelligence

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110304972A1 (en) * 2010-06-15 2011-12-15 Apple Inc. Small form factor desk top computer
CN203327446U (en) * 2013-07-04 2013-12-04 泰科电子(上海)有限公司 Wire-distributing frame used for cable and optical cable
CN206350019U (en) * 2016-12-16 2017-07-21 金海� A kind of high security router
CN108963414A (en) * 2018-06-22 2018-12-07 湖北泰和电气有限公司 A kind of perpendicular device of efficient antenna
CN209647665U (en) * 2019-04-16 2019-11-19 李坚涛 A kind of electric hand drill with scrap collection function
CN209572002U (en) * 2019-05-20 2019-11-01 广州市祥云网络科技有限公司 A kind of multi-media classroom wireless network transmitter
CN209572021U (en) * 2019-05-20 2019-11-01 广州市祥云网络科技有限公司 A kind of message switching equipment of suitable indoor wall installation
CN211789529U (en) * 2020-04-01 2020-10-27 湖北阿桑奇汽车电子科技有限公司 Antenna assembly applied to T-BOX system
CN211630300U (en) * 2020-04-07 2020-10-02 广西松贤科技有限公司 Wireless connection management module based on Internet of things
CN211580123U (en) * 2020-04-30 2020-09-25 梁福桃 Protection mechanism for router interface for industrial internet
CN212086226U (en) * 2020-06-17 2020-12-04 金华市中智物联科技有限公司 Anti-interference gateway for Internet of things
CN111642094A (en) * 2020-06-29 2020-09-08 东莞市凯勒帝数控科技有限公司 5G dual-frequency router convenient to clean
CN112600754A (en) * 2020-12-31 2021-04-02 太平洋电信股份有限公司 SDN network route screening device based on artificial intelligence

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Application publication date: 20210831

RJ01 Rejection of invention patent application after publication