CN110518700B - Intelligent grounding wire hook based on ubiquitous Internet of things - Google Patents
Intelligent grounding wire hook based on ubiquitous Internet of things Download PDFInfo
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- CN110518700B CN110518700B CN201910808661.XA CN201910808661A CN110518700B CN 110518700 B CN110518700 B CN 110518700B CN 201910808661 A CN201910808661 A CN 201910808661A CN 110518700 B CN110518700 B CN 110518700B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
- H01R11/12—End pieces terminating in an eye, hook, or fork
- H01R11/14—End pieces terminating in an eye, hook, or fork the hook being adapted for hanging on overhead or other suspended lines, e.g. hot line clamp
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
Abstract
The intelligent grounding wire hook based on the ubiquitous Internet of things comprises an induction module, a positioning module, an RFID tag, an Internet of things module, a power supply module and a wireless charging module receiving end, wherein the induction module, the positioning module, the RFID tag, the Internet of things module, the power supply module and the wireless charging module receiving end are arranged on a pull rod; these modules are assembled on the MCU motherboard. The sensing module is used for sensing whether the working state of the hook is closed or opened; the positioning module is used for positioning the position of the hook; the RFID tags are used for numbering each hook, and two-dimensional code tags are arranged outside the hooks; and the Internet of things module is used for transmitting the data information of each module to the concentrator or directly carrying out communication connection with a ubiquitous Internet of things system. The wireless charging module receiving end is used for wirelessly charging the power module, and the MCU processor monitors the standby or working state of the wireless charging module receiving end and charges the power module at a proper time. The hook also comprises a storage cabinet matched with the hook. The invention effectively solves the illegal use condition of the ground wire hook, reduces human errors and avoids power failure accidents.
Description
Technical Field
The invention relates to the technical field of grounding hooks of power systems, in particular to an intelligent grounding wire hook based on the ubiquitous Internet of things.
Background
In the field of power equipment, a grounding wire hook is a commonly used auxiliary device for grounding high-voltage and low-voltage power transmission lines, and is hung on a power transmission line through the hook, and the power transmission line is connected with the ground through a conducting wire. The ground wire hook in the prior art is a pure mechanical device, and currently, various types of technical improvements are mostly improved based on the inherent mechanical structure of the hook. However, from statistics of accident conditions occurring in the use of the ground wire hook, most of the accidents are caused by artificially using the ground wire hook in an illegal way, and particularly, the large-area power failure accident is easily caused by using the ground wire hook and forgetting to recover the ground wire hook.
Disclosure of Invention
In order to solve the technical problems, the invention provides an intelligent ground wire hook based on a ubiquitous Internet of things, which comprises a hook body and a storage device, wherein the hook body and the storage device are in interactive connection through the Internet of things, so that the illegal use condition of the ground wire hook is effectively solved, human errors are reduced, and the power failure accident is avoided.
The technical scheme adopted by the invention is as follows:
intelligent earth connection couple based on ubiquitous thing networking includes:
the induction module, the positioning module, the RFID tag, the Internet of things module, the power supply module and the wireless charging module receiving end are arranged on the pull rod; the sensing module, the positioning module, the RFID tag, the Internet of things module, the power supply module and the wireless charging module receiving end are assembled on the MCU mainboard;
the sensing module is used for sensing whether the working state of the hook is closed or opened;
the positioning module comprises an indoor positioning module and an outdoor positioning module and is used for positioning the position of the hook;
the RFID tags are used for numbering each hook, and two-dimensional code tags are arranged outside the hooks;
the Internet of things module is used for transmitting data information of each module to the concentrator or directly carrying out communication connection with a ubiquitous Internet of things system;
the power supply module is used for providing power supply for each module;
the wireless charging module receiving end is used for wirelessly charging the power module, the wireless charging module receiving end and the power module are both connected with the MCU processor of the MCU mainboard, and the MCU processor monitors the standby state or the working state of the wireless charging module receiving end and charges the power module at a proper time.
The intelligent grounding wire hook also comprises a storage cabinet matched with the intelligent grounding wire hook;
the storage cabinet is provided with an RFID card reader, a concentrator, a wireless charging module transmitting terminal, an alarm signal lamp and a liquid crystal display module;
the RFID card reader is used for reading RFID label data in the hook and can uniquely identify the hook;
the concentrator is used for summarizing data transmitted by the Internet of things module in each hook and communicating with a ubiquitous Internet of things system;
the wireless charging module transmitting end is wirelessly connected with the wireless charging module receiving end and is used for charging each power module of the hook;
the liquid crystal display module is used for displaying the using condition and the corresponding number of the hooks; simultaneously displaying the battery condition of the power module;
the alarm signal lamp is used for giving a prompt and giving an alarm when the number of the hooks is not in accordance with the requirement.
The invention discloses an intelligent grounding wire hook based on a ubiquitous Internet of things, which has the following technical effects:
1) Through the wireless charging module, when the hook is not suitable for being stored in the tool cabinet, the rechargeable module is charged and maintained; when in use, the rechargeable module provides power for other functional modules.
2) Through orientation module, RFID label, can carry out the fine management to the couple, avoid the couple to use various ann rule risks such as confusion.
3) Through the Internet of things module, the hook service condition is directly accessed into the ubiquitous Internet of things system, and intelligent management of the power equipment is realized.
4) Through setting up the storing compartment, effectively solve the violation of rules and regulations in service condition of earth connection couple, reduce artificial error, avoid appearing the power failure accident.
Drawings
The invention is further illustrated with reference to the following figures and examples:
fig. 1 is a schematic view of the assembly of the various functional modules of the hanger of the present invention.
Fig. 2 is a hardware connection block diagram of each functional module of the hook according to the present invention.
Fig. 3 is a schematic structural view of the storage cabinet of the present invention.
Fig. 4 is a hardware connection block diagram of each functional module of the storage cabinet of the present invention.
FIG. 5 is a first diagram illustrating a hook structure according to the present invention;
fig. 6 is a schematic view of a hook structure of the present invention.
Fig. 7 is a third schematic view of the hook structure of the present invention.
Detailed Description
As shown in fig. 1 and 2, the intelligent ground wire hook based on the ubiquitous internet of things includes:
the system comprises an induction module 2, a positioning module, an RFID tag 4, an Internet of things module 5, a power supply module 6 and a wireless charging module receiving end 7 which are arranged on a pull rod 1; the sensing module 2, the positioning module, the RFID tag 4, the Internet of things module 5, the power module 6 and the wireless charging module receiving end 7 are assembled on the MCU mainboard 8.
The sensing module 2 is connected with the MCU processor of the MCU mainboard 8 and used for sensing whether the working state of the hook is closed or opened. The sensing module 2 adopts a D2SW-01L2HS travel switch.
The orientation module includes indoor orientation module 3.1, outdoor orientation module 3.2, because the condition of transformer substation is more complicated, and the condition such as electromagnetic interference is serious, need adopt two sets of orientation modules, and indoor orientation module 3.1 adopts the UWB technique, and the module adopts DWM1000 module, and outdoor orientation module 3.2 adopts GPS system or beidou system for confirm the position that the couple is in at present, make things convenient for operating personnel to look for the couple.
And the RFID tag 4 is used for numbering each hook, and a two-dimensional code tag is arranged outside each hook. Therefore, the RFID card reader 11 can uniquely identify the hook, and the condition that the number is inconsistent and the like is avoided. And after the RFID label 4 and the two-dimensional code label are adopted, human errors can be reduced.
The internet of things module 5 is used for transmitting data information of each module to the concentrator 9 in a uniform data format or directly carrying out communication connection with a ubiquitous internet of things system. The internet of things module 5 adopts a LoRa module series WH-L100-L7 wireless data transmission module. The concentrator 9 adopts a USR-LG220-LLoRa wireless gateway.
And the power supply module 6 is used for supplying power to each module. The MCU mainboard 8 monitors the standby or working state of the receiving end 7 of the wireless charging module and charges the power module 6 at a proper time. After the power module 6 is fully charged, indirect work can be ensured for at least 72 hours, and when the electric quantity is insufficient, an alarm signal can also be generated.
The wireless charging module receiving end 7 adopts a BQ51013B highly integrated wireless receiver.
The power module 6 employs an NCR18650 lithium battery.
The wireless charging module receiving end 7 is used for wirelessly charging the power module 6, the wireless charging module receiving end 7 and the power module 6 are both connected with the MCU processor of the MCU mainboard 8, the MCU processor monitors the standby state or the working state of the wireless charging module receiving end 7, and the power module 6 is charged at a proper time. The MCU processor adopts STM32F103VET6.
As shown in fig. 3 and 4, the intelligent ground wire hook further comprises a storage cabinet 10 matched with the intelligent ground wire hook.
The storage cabinet 10 is provided with an RFID card reader 11, a concentrator 9, a wireless charging module transmitting terminal 12, an alarm signal lamp 13, a liquid crystal display module 14, a processor module 15 and a power supply part.
The processor module 15 is respectively in contact with the RFID card reader 11, the concentrator 9, the wireless charging module transmitting terminal 12, the alarm signal lamp 13 and the liquid crystal display module 14.
The processor module 15 is also connected to the indoor positioning module 3.1. Indoor orientation module 3.1 of installation on the storing compartment 10 is two parts of a set of module with the outdoor orientation module 3.2 of installation on the couple, and the responsible for on the couple sends the signal, and the responsible for received signal of storing compartment 10 becomes the location data to convey to processor module 15. The processor module 15 employs an STM32F767IGT6 processor.
The RFID card reader 11 is used for reading data of the RFID label 4 in the hook and can uniquely identify the hook. After the storage cabinet 10 is placed with the multiple groups of hooks, the corresponding number of the hooks can be displayed through the external liquid crystal display module 14, if the number of the hooks is not consistent, a corresponding prompt is given, and the alarm signal lamp 13 is on.
The RFID card reader 11 adopts an ultrahigh frequency RFID module R2000 reader module.
And the concentrator 9 is used for summarizing data transmitted by the Internet of things module 5 in each hook and communicating with a ubiquitous Internet of things system. The use condition of the hooks is displayed on the liquid crystal display module 14 in real time, and each group of hooks is ensured to be in a controllable state.
With the perfect construction of the ubiquitous Internet of things of the power grid, all the Internet of things modules 5 can also be directly connected with the ubiquitous Internet of things system of the transformer substation.
The wireless charging module transmitting end 12 is wirelessly connected with the wireless charging module receiving end 7 and is used for charging the power supply module 6 of each group of hooks. Meanwhile, the situation of the power supply module 6 is detected, and the problem is also displayed on the liquid crystal display module 14 to provide relevant information for operators.
The liquid crystal display module 14 is used for displaying the use condition and the corresponding number of the hooks; while displaying the battery condition of the power module 6.
The wireless charging module transmitting terminal 12 adopts ST company STEVAL-ISB045V1.
The LCD module 14 is ATK-1018.1 inch IPS capacitive touch screen module. The advantages are that:
(1) 10.1 inch large screen, which is suitable for various high-end control equipment; (2) the IPS screen can clearly see the real content in all directions, and is comparable to the ordinary liquid crystal; (3) 1280 × 800 resolution, and exquisite reality effect; (4) supporting RGB & LVDS dual interfaces and being suitable for different use scenes; (5) 1600W color display is supported, and the color reduction effect is better; (6) using a capacitive touch screen, maximally supporting 10 points of simultaneous touch;
and the alarm signal lamp 13 is used for giving a prompt and giving an alarm when the number of the hooks is not in accordance with the requirement. And when the condition that the safety regulation is not allowed occurs, an alarm signal is sent out. When the device is in a normal working state in daily life, a prompt signal is also sent out. The alarm signal lamp 13 adopts an ST45L multilayer alarm lamp with a buzzer and has three-color indications of red, yellow and blue.
The entire storage case 10 may be custom-made, or the previous storage case 10 may be modified to add corresponding modules.
As shown in fig. 5 to 7, the mechanical part of the intelligent ground wire hook comprises a hollow pull rod 1, a hook sleeve rod 16 is slidably arranged in the pull rod 1, the hook sleeve rod 16 is also of a hollow sleeve structure, hooks 17 are welded on the top end of the hook sleeve rod 16 in a bilateral symmetry manner, and the hooks 17 are arc-shaped and are convenient to adapt to wires with wire diameters. An L-shaped limiting groove 18 is formed in the hook sleeve rod 16 between the two hooks 17, the vertical part of the L-shaped limiting groove 18 is located between the two hooks 17, and the horizontal part of the L-shaped limiting groove 18 is located below one hook. A fixing block 19 is installed in the pull rod 1 through a bolt, and the fixing block 19 is fixedly connected with a tightening rod 20. The tightening rod 20 is an L-shaped rod, the vertical part of the tightening rod 20 is positioned in the hook sleeve rod 16, and the horizontal part of the tightening rod 20 extends out of the L-shaped limiting groove 18 and is longer than the width of the hook 17. A gasket 21 is sleeved on the vertical part of the tightening rod 20 and close to the horizontal part, and a compression spring 23 is sleeved on the tightening rod between the gasket 21 and the fixed block 19, wherein the compression spring 23 is in a compression state under any condition. The top end of the hook loop bar 16 is in threaded connection with a plug 22, and the plug 22 plays a limiting role on one hand and can prevent rainwater from directly entering from the upper end of the hook loop bar 16 on the other hand. The pull rod 1 is formed by connecting a plurality of sections of supporting sleeve rods in a threaded manner. Thereby the length can be adjusted according to the actual requirement. And a ground wire connecting screw 24 is arranged on the hook sleeve rod 16 at the back of the hook 17, so that the ground wire hook is conveniently connected with a ground wire.
The mechanical part adopts novel structural design, has added the anti-drop function, and the installation only needs to accomplish drop-down-rotatory pull rod 1 can start the anti-drop function, and is simple swift to it is more firm with the wire contact, the condition that can not appear sliding along the wire and even drop. When the pull rod is detached, the pull rod 1 is rotated reversely to remove the anti-falling function, and then the pull rod can be taken down by pushing up, so that the workload is not increased.
Adopt the conical surface design with earth connection contact bayonet socket, the suitability is strong, can satisfy different earth connection line footpaths demands, under different footpaths, all can guarantee that the installation is firm.
The existing grounding wire is easy to slide and fall off due to the fact that the vertical wire and the inclined wire cannot be firmly installed, the problem can be effectively solved, and the situation that people install the grounding wire insecurely when the grounding wire is installed on the vertical wire or the inclined wire on the ground is avoided.
The implementation steps are as follows:
1. the condition that the hooks are not used at ordinary times, a plurality of groups of hooks are placed in the storage cabinet 10 according to unique numbers, the liquid crystal display module 14 is externally connected to display the numbers of each group, the wireless charging module detects the condition of the power supply module 6 and charges appropriately, the alarm signal lamp 13 sends a normal prompt signal, the concentrator 9 is in interactive communication with the ubiquitous Internet of things system of the transformer substation, and other modules are in a standby state.
2. When the hook works, a worker takes out the hook, the RFID card reader 11 cannot read the RFID tag 4 of the hook, the corresponding hook is judged to be taken out, the working mode of the hook is started, and all the modules are in working states.
3. Under the working state, each group of hooks transmits the use condition, the positioning information, the battery power and the like to the concentrator 9 and the ubiquitous Internet of things system of the transformer substation through the Internet of things, the liquid crystal display module 14 and the alarm signal lamp 13 of the storage cabinet 10 display corresponding prompt signals, and the ubiquitous Internet of things system carries out real-time inspection on the compliance use of the hooks.
4. And (4) recovering hooks, wherein after each group of hooks are recovered and placed in the storage cabinet 10, the RFID card reader 11 reads the information of the corresponding hook, the working mode is changed into a standby mode, and the information is displayed on the liquid crystal display module 14. If the unrecycled hook is found, the alarm signal lamp 13 correspondingly gives an alarm prompt and uploads the data to a ubiquitous Internet of things system of the transformer substation, and the system gives a prompt for next operation according to the current situation or strictly forbids the next operation.
Claims (2)
1. The intelligent ground wire hook based on the ubiquitous Internet of things comprises an induction module (2), a positioning module, an RFID (radio frequency identification) tag (4), an Internet of things module (5), a power supply module (6) and a wireless charging module receiving end (7) which are arranged on a pull rod (1); the sensing module (2), the positioning module, the RFID tag (4), the Internet of things module (5), the power supply module (6) and the wireless charging module receiving end (7) are assembled on the MCU mainboard (8);
the sensing module (2) is used for sensing whether the working state of the hook is closed or opened;
the positioning module comprises an indoor positioning module (3.1) and an outdoor positioning module (3.2) and is used for positioning the position of the hook;
the RFID tag (4) is used for numbering each hook, and a two-dimensional code tag is arranged outside each hook;
the Internet of things module (5) is used for transmitting data information of each module to the concentrator (9) or directly carrying out communication connection with a ubiquitous Internet of things system;
the power supply module (6) is used for supplying power to each module;
the wireless charging module receiving end (7) is used for wirelessly charging the power module (6), the wireless charging module receiving end (7) and the power module (6) are both connected with the MCU processor of the MCU mainboard (8), the MCU processor monitors the standby state or the working state of the wireless charging module receiving end (7), and the power module (6) is charged at a proper time.
2. The intelligent earth connection couple based on ubiquitous thing networking of claim 1 characterized in that: the intelligent grounding wire hook also comprises a storage cabinet (10) matched with the intelligent grounding wire hook;
the storage cabinet (10) is provided with an RFID card reader (11), a concentrator (9), a wireless charging module transmitting terminal (12), an alarm signal lamp (13) and a liquid crystal display module (14);
the RFID card reader (11) is used for reading data of the RFID tag (4) in the hook and can uniquely identify the hook;
the concentrator (9) is used for summarizing data transmitted by the Internet of things module (5) in each hook and communicating with a ubiquitous Internet of things system;
the wireless charging module transmitting end (12) is wirelessly connected with the wireless charging module receiving end (7) and is used for charging each power module (6) of the hook;
the liquid crystal display module (14) is used for displaying the use condition and the corresponding number of the hooks; simultaneously displaying the battery condition of the power module (6);
alarm signal lamp (13) for when couple quantity nonconforming requirement, give the suggestion and report to the police.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910808661.XA CN110518700B (en) | 2019-08-29 | 2019-08-29 | Intelligent grounding wire hook based on ubiquitous Internet of things |
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| CN201910808661.XA CN110518700B (en) | 2019-08-29 | 2019-08-29 | Intelligent grounding wire hook based on ubiquitous Internet of things |
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| CN110518700B true CN110518700B (en) | 2022-10-21 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113011547A (en) * | 2021-01-22 | 2021-06-22 | 重庆涪陵电力实业股份有限公司 | Intelligent sensing tag for grounding wire clamp of power system |
| CN112994249A (en) * | 2021-04-15 | 2021-06-18 | 国网上海市电力公司 | Transformer substation articulates ground wire management device based on thing networking |
| CN113759282A (en) * | 2021-09-09 | 2021-12-07 | 四川省东宇信息技术有限责任公司 | Grounding wire monitoring system based on Beidou differential positioning |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203774866U (en) * | 2013-04-24 | 2014-08-13 | 刘立星 | Intelligent ground wire apparatus and ground wire operation safety monitoring and error-preventing system |
| CN105107100A (en) * | 2015-08-07 | 2015-12-02 | 东莞市天楠光电科技有限公司 | Intelligent rescuing high-altitude pothook device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203774866U (en) * | 2013-04-24 | 2014-08-13 | 刘立星 | Intelligent ground wire apparatus and ground wire operation safety monitoring and error-preventing system |
| CN105107100A (en) * | 2015-08-07 | 2015-12-02 | 东莞市天楠光电科技有限公司 | Intelligent rescuing high-altitude pothook device |
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