CN214100973U - Power distribution system based on Internet of things - Google Patents
Power distribution system based on Internet of things Download PDFInfo
- Publication number
- CN214100973U CN214100973U CN202022510035.3U CN202022510035U CN214100973U CN 214100973 U CN214100973 U CN 214100973U CN 202022510035 U CN202022510035 U CN 202022510035U CN 214100973 U CN214100973 U CN 214100973U
- Authority
- CN
- China
- Prior art keywords
- power distribution
- main controller
- distribution system
- alarm
- internet
- 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.)
- Active
Links
- 238000009826 distribution Methods 0.000 title claims abstract description 104
- 238000012544 monitoring process Methods 0.000 claims abstract description 47
- 238000012806 monitoring device Methods 0.000 claims abstract description 29
- 230000005611 electricity Effects 0.000 claims abstract description 20
- 230000006855 networking Effects 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 9
- 239000000779 smoke Substances 0.000 claims description 8
- 230000000007 visual effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 238000013480 data collection Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 230000002159 abnormal effect Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model discloses a distribution system and control method based on thing networking, it belongs to the distribution system field, and it includes a plurality of electricity distribution rooms, still includes: the main controller is used for receiving signals and sending task instructions; the data acquisition device is arranged in the power distribution rooms and is used for acquiring operation data information in each power distribution room and sending the operation data information to the main controller; the video monitoring device is arranged in the power distribution rooms and is used for acquiring video and image information in each power distribution room; the alarm device is used for receiving the task instruction of the main controller and acting; a power supply for providing electrical energy to a power distribution system. The utility model greatly improves the monitoring efficiency; when a fault occurs, operation and maintenance personnel can timely receive information and give an alarm through a telephone, the fault reason can be quickly found out, the problems of shutdown and production stoppage of enterprises caused by power failure due to the fault are reduced, and the operation and maintenance efficiency is effectively improved.
Description
Technical Field
The utility model relates to a power distribution system, concretely relates to power distribution system based on thing networking and control method thereof.
Background
The distribution room is used as an infrastructure in an electric power system, and has important significance for efficient and stable operation of a distribution network. At present, in most enterprises, the informatization and automation degree of the security monitoring work of the power distribution room is low, and the modes of manual on-site inspection or local configuration monitoring and the like are still mainly relied on. Manual on-site inspection has high error rate and low real-time performance, historical data cannot be analyzed and checked after problems occur, the phenomena of equipment theft, transformer and component overheating and burning in a distribution room are rare, and the safe operation of the distribution room cannot be guaranteed;
local configuration control sets up the computer promptly in each electricity distribution room, through collection equipment's data, data display and historical inquiry on computer configuration software, and the trouble is reported to the police in time, though avoided artifical defect of patrolling, but also has certain limitation:
(1) each power distribution room is required to be provided with a set of monitoring system and corresponding monitoring personnel, so that the labor cost is increased;
(2) the system has no back-up power supply, once the power is cut off, the power distribution room cannot be continuously monitored, and the monitoring efficiency is greatly reduced;
(3) related data can only be checked on a local monitoring system computer, and cannot be checked at any time and any place, so that the maintenance efficiency is reduced.
In order to effectively solve the problem, the utility model provides a distribution system based on thing networking and control method thereof.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a distribution system based on thing networking and control method thereof.
The technical solution of the utility model is as follows:
the utility model provides a power distribution system based on thing networking, includes a plurality of electricity distribution rooms, still includes:
the main controller is used for receiving signals and sending task instructions;
the data acquisition device is arranged in the power distribution rooms and is used for acquiring operation data information in each power distribution room and sending the operation data information to the main controller;
the video monitoring device is arranged in the power distribution rooms and is used for acquiring video and image information in each power distribution room;
the alarm device is used for receiving the task instruction of the main controller and acting;
a power supply for providing electrical energy to a power distribution system.
Further, still include the cloud monitoring platform, it is connected with main control unit and video monitoring device through thing networking gateway and network switch in proper order, the cloud monitoring platform is used for showing and storing data and video image information that main control unit and video monitoring device sent.
Furthermore, the cloud monitoring platform is in communication connection with a mobile terminal and/or a computer terminal.
Furthermore, the video monitoring device can trigger acousto-optic alarm according to the acquired face snapshot information and the area intrusion detection information; and/or;
the video monitoring device can also output an alarm switching value signal to the main controller, and the main controller sends an instruction to the alarm device to trigger the alarm device to give an alarm.
Furthermore, the data acquisition device is connected with the main controller through a communication module.
Furthermore, the data acquisition device comprises an intelligent instrument which is arranged on the power distribution loop of each power distribution room and used for reading the power utilization data of the load on each power distribution loop in real time.
Further, the electricity data includes current, voltage, electricity consumption, power and the like.
Further, the data acquisition device further comprises an environment sensor device for acquiring the temperature and/or humidity and/or smoke concentration in each distribution room and/or the internal pressure and temperature of the transformer in the distribution room.
The utility model also discloses a control method of the power distribution system based on the Internet of things, which comprises the following steps;
the data acquisition device acquires operation data information of each power distribution room and sends the operation data information to the main controller, the main controller receives the operation data information and judges whether the operation data information reaches each set threshold value, if the operation data information reaches or exceeds the threshold value, the main controller sends an alarm instruction to the alarm device, and the alarm device gives an alarm;
meanwhile, the main controller sends the operation data information of each power distribution room to the cloud monitoring platform, the cloud monitoring platform judges whether the operation data information reaches each set threshold value, if the operation data information reaches or exceeds the threshold value, alarm information is generated on the cloud monitoring platform, and meanwhile WeChat and telephone alarm are sent to the mobile terminal;
meanwhile, the video monitoring device collects video and image information of each power distribution room and sends the video and image information to the cloud monitoring platform, and when abnormal information exists in the image information, the video monitoring device responds to the abnormal information for allocation;
and simultaneously, the main controller stores all received running data information and collected video and image information in the cloud monitoring platform by the video monitoring device.
Preferably, when the electrical distribution room is powered down, the power supply is activated to continue to supply power to the electrical distribution system.
The utility model discloses one of following beneficial effect has at least: the utility model discloses a distribution system based on thing networking, through setting up data information collection system and video monitoring device in each electricity distribution room, with the relevant information feedback to main control unit who gathers, main control unit receives and judges this information to send the instruction to alarm device, the data information and the video image information of gathering simultaneously are unified to be transmitted to cloud monitoring platform centralized monitoring, can realize can looking over the real-time/historical data and the video of each electricity distribution room in any time and place, the artifical maintenance cost has effectively been reduced; the system is provided with the backup power supply device, so that the system can be continuously powered after power failure, data and videos transmitted to the cloud platform are not affected by power failure of an enterprise, and monitoring efficiency is greatly improved; when a fault occurs, operation and maintenance personnel can timely receive information and give an alarm through a telephone, the fault reason can be quickly found out, the problems of shutdown and production stoppage of enterprises caused by power failure due to the fault are reduced, and the operation and maintenance efficiency is effectively improved.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the framework of the preferred embodiment of the invention;
in the figure, 100-electricity distribution room one, 200-electricity distribution room five, 1-cloud monitoring platform, 2-computer terminal, 3-mobile terminal, 4-main controller, 5-communication module, 6-temperature and humidity sensor, 7-smoke sensor, 8-internet of things gateway, 9-power supply, 10-network switch, 11-video monitoring device, 12-alarm device and 13-intelligent instrument.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
With reference to fig. 1 and 2, a preferred embodiment of the present invention:
an internet-of-things-based power distribution system comprises a plurality of power distribution rooms, specifically, 5 power distribution rooms can be provided, such as, but not limited to, power distribution room one 100 to power distribution room five 200, and further comprises:
the main controller 4 is used for receiving signals and sending task instructions, and specifically, the main controller communicates with the internet of things module through a network switch;
the data acquisition device is arranged in the power distribution rooms and is used for acquiring operation data information in each power distribution room and sending the operation data information to the main controller 4;
the video monitoring device 11 is internally provided with a video storage module and is arranged in the power distribution room, and the video monitoring device 11 is used for acquiring video and image information in each power distribution room;
and the alarm device 12 is used for receiving the task instruction of the main controller 4 and acting, and specifically, the alarm device 12 can be an alarm, such as a buzzer, or other types of alarms.
And the power supply 9 is used for supplying electric energy to the power distribution system, can continuously supply power to the system when the external power fails, and ensures the continuity of the power supply of the system by uninterrupted switching.
According to the embodiment, the data information acquisition devices and the video monitoring devices are arranged in the distribution rooms, the acquired related information is fed back to the main controller, the main controller receives and judges the information and sends instructions to the alarm devices, and meanwhile, the acquired data information and the acquired video image information are uniformly transmitted to the cloud monitoring platform for centralized monitoring, so that real-time/historical data and videos of the distribution rooms can be checked at any time and any place, and the manual maintenance cost is effectively reduced; the system is provided with the backup power supply device, so that the system can be continuously powered after power failure, data and videos transmitted to the cloud platform are not affected by power failure of an enterprise, and monitoring efficiency is greatly improved; when a fault occurs, operation and maintenance personnel can timely receive information and give an alarm through a telephone, the fault reason can be quickly found out, the problems of shutdown and production stoppage of enterprises caused by power failure due to the fault are reduced, and the operation and maintenance efficiency is effectively improved
As a preferred embodiment of the present invention, it may also have the following additional technical features:
the intelligent monitoring system is characterized by further comprising a cloud monitoring platform 1, wherein the cloud monitoring platform 1 is connected with the main controller 4 and the video monitoring device 11 sequentially through the internet of things gateway 8 and the network switch 10, and the cloud monitoring platform 1 is used for displaying and storing information received and collected by the main controller 4 and the video monitoring device 11. The network switch 10 is used for converting network connection among the main controller 4, the video monitoring device 11 and the internet of things gateway 8; the internet of things gateway 8 is used for converting the data of the different industrial protocols of the above-mentioned collection, and on data and video conveying after will converting through the internet of things sent cloud monitoring platform 1, cloud monitoring platform 1 can carry out centralized monitoring with the indoor outer data of distribution room and video, can look over the data and the video of distribution room in real time through the network in any place, also can look over historical data and video.
The cloud monitoring platform 1 is in communication connection with a mobile terminal 3 and/or a computer terminal 2, and the mobile terminal 3 can be a mobile phone or a tablet, and can also be other communication equipment capable of receiving information.
The video monitoring device can carry out face snapshot and regional invasion and detect and according to face snapshot information and regional invasion and detect information self triggering audible and visual alarm, and in concrete application, when video monitoring device detected that there was people or thing to break into the work area that the electricity distribution room was demarcated, its self produced the warning, and the warning video can be uploaded to cloud monitoring platform automatically, and the suggestion fortune dimension personnel look over.
Meanwhile, the video monitoring device can also output a switching value signal to the main controller, and the main controller sends an alarm instruction to the alarm device to trigger local alarm.
The data acquisition device is connected with the main controller 4 through the communication module 5.
The data acquisition device comprises an intelligent instrument 13 which is arranged on a power distribution loop of each power distribution room and used for reading the power utilization data of the load on each power distribution loop in real time.
The electricity consumption data comprise parameters such as current, voltage, electricity consumption and power.
The data acquisition device further comprises an environment sensor device, wherein the environment sensor device is used for acquiring the temperature and/or the humidity and/or the smoke concentration in each distribution room and/or the internal pressure and the temperature of a transformer in each distribution room, and specifically, the environment sensor device comprises a temperature and humidity sensor 6 and a smoke sensor 7.
In another embodiment, a method for controlling a power distribution system based on the internet of things includes the following steps;
the data acquisition device acquires the operation data information of each power distribution room and sends the operation data information to the main controller 4, the main controller 4 receives the operation data information and judges whether the operation data information reaches each set threshold value, if the operation data information reaches or exceeds the set threshold value, the main controller 4 sends an alarm instruction to the alarm device 12, and the alarm device 12 gives a local alarm;
meanwhile, the main controller 4 transmits the operation data information of each power distribution room to the internet of things gateway 8 through the network switch 10, and then transmits the operation data information to the cloud monitoring platform 1, the cloud monitoring platform 1 judges whether the operation data information reaches each set threshold value, if the operation data information reaches or exceeds the set threshold value, the cloud monitoring platform generates alarm information, and meanwhile, information and telephone alarm are transmitted to operation and maintenance personnel;
meanwhile, the video monitoring device 11 collects video and image information of each power distribution room, transmits the video and image information to the internet of things gateway 8 through the network switch 10, then directly uploads the video and image information to the cloud monitoring platform 1, and when abnormal information exists in the video and image information, allocation is carried out in response to the abnormal information; specifically, the alarm prompt appears in the cloud monitoring platform 1, and operation and maintenance personnel can log in the cloud monitoring platform to check and then timely maintain the site; the video monitoring device 11 can also send out an audible and visual alarm to remind operation and maintenance personnel to maintain in time; the cloud monitoring platform 1 can also send the acquired alarm information to a personal computer terminal or a mobile terminal for reminding, so that operation and maintenance personnel can maintain the site more conveniently.
Meanwhile, the main controller 4 stores all the received operation data information and the video and image information collected by the video monitoring device 11 in the cloud monitoring platform 1.
When the electricity distribution room is powered off, the power supply 9 is started to continuously supply power to the power distribution system.
When the steel beam manufacturing and processing device is applied specifically, a high-voltage distribution room and four low-voltage distribution rooms are arranged in a certain steel beam manufacturing and processing enterprise, the distribution rooms are distributed in different areas of the enterprise, and each distribution room is provided with a plurality of loops to supply power to different production workshops and office areas. The rated voltage of a high-voltage distribution system is 10KV, the rated current of a circuit breaker of an incoming line cabinet is 1600A, and the rated current of a circuit breaker of an outgoing line cabinet is 630A; the rated voltage of a low-voltage distribution system is 400V, the rated current of a main breaker of an incoming line cabinet is 2000A, the rated current of a branch breaker of an outgoing line cabinet is 400A, and the requirement of the power factor of the whole system is not lower than 0.9.
Five sets of the intelligent power distribution systems are adopted to carry out centralized monitoring management on five power distribution rooms, and the intelligent monitoring system is shown in figure 1. Each electricity distribution room is provided with a plurality of intelligent instruments 13 according to the number of loops, electricity utilization data of each load, including parameters such as current, voltage, electricity consumption and power factor of each loop, the read data are transmitted to the programmable controller through the communication module 5, meanwhile, the temperature and humidity sensors 6 and the smoke sensors 7 acquire indoor temperature, humidity and smoke concentration in real time and transmit the indoor temperature, humidity and smoke concentration to the programmable controller, and when a system fault or data are abnormal, the alarm device 12 in the electricity distribution room is started to send out audible and visual alarm prompts. Install 4 way intelligent network cameras in every distribution room suitable position outside and inside, respectively to indoor switch board, real time monitoring is carried out to transformer and outdoor surrounding environment, the video of control is preserved in SD RAM card or the digital video recorder in the camera, can look over at any time, the real-time video of while control and the data of above-mentioned collection transmit to thing networking gateway 8 together through network switch 10, the data of different agreements are unified to be converted in the gateway, the UPS power is as reserve power 9, continue to supply power for this system when the distribution room has a power failure. Data and video of five electricity distribution rooms are transmitted to the cloud monitoring platform 1 through the thing networking is unified and are monitored concentratedly, and managers can look over data and video of five electricity distribution rooms at any time through computer end 2 or removal end 3, and when data or video image abnormal conditions appear in the system, fortune dimension personnel can receive the information and the telephone alarm that cloud monitoring platform sent, in time handle the fault area, reduce the trouble and have a power failure and give the loss that the enterprise brought. Specifically, the alarm threshold values set for each meter and device are shown in table 1, but not limited thereto, and the number of alarm data, the alarm range value, and the delay time may be set according to the requirements of different enterprises.
TABLE 1 alarm range setting table for system data abnormity
The above additional technical features can be freely combined and used in superposition by those skilled in the art without conflict.
The above is only the preferred embodiment of the present invention, as long as the technical solution of the purpose of the present invention is realized by the substantially same means, all belong to the protection scope of the present invention.
Claims (8)
1. The utility model provides a power distribution system based on thing networking, includes a plurality of electricity distribution rooms, its characterized in that still includes:
a main controller (4) for receiving signals and sending task instructions;
the data acquisition device is arranged in the power distribution rooms and is used for acquiring operation data information in each power distribution room and sending the operation data information to the main controller (4);
the video monitoring device (11) is arranged in the power distribution room, and the video monitoring device (11) is used for acquiring video and image information in each power distribution room;
the alarm device (12) is used for receiving a task instruction of the main controller (4) and acting;
a power supply (9) for providing electrical energy to the power distribution system.
2. The power distribution system based on the internet of things as claimed in claim 1, further comprising a cloud monitoring platform (1) which is in signal connection with the main controller (4) and the video monitoring device (11) through the internet of things gateway (8) and the network switch (10) in sequence, wherein the cloud monitoring platform (1) is used for displaying and storing all data and video image information sent by the main controller (4) and the video monitoring device (11).
3. The power distribution system based on the internet of things as claimed in claim 2, wherein the cloud monitoring platform (1) is in communication connection with a mobile terminal (3) and/or a computer terminal (2).
4. The power distribution system based on the internet of things as claimed in claim 1, wherein the video monitoring device (11) can trigger an audible and visual alarm according to the acquired face snapshot information and the area intrusion detection information; and/or;
the video monitoring device (11) can also output an alarm switching value signal to the main controller (4), the main controller (4) sends an alarm instruction to the alarm device (12), and the alarm device (12) gives an alarm.
5. The power distribution system based on the internet of things as claimed in claim 1, wherein the data acquisition device is connected with the main controller (4) through a communication module (5).
6. The distribution system based on the internet of things as claimed in claim 5, wherein the data acquisition device comprises a smart meter (13) installed on the distribution loop of each distribution room for reading the power consumption data of the load on each distribution loop in real time.
7. The internet of things-based power distribution system of claim 6, wherein the electricity consumption data comprises current, voltage, electricity usage, and power.
8. The internet of things-based power distribution system of claim 1, wherein the data collection device further comprises an environmental sensor device for collecting temperature and/or humidity and/or smoke concentration in each distribution room and/or transformer internal pressure and temperature in the distribution room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022510035.3U CN214100973U (en) | 2020-11-02 | 2020-11-02 | Power distribution system based on Internet of things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022510035.3U CN214100973U (en) | 2020-11-02 | 2020-11-02 | Power distribution system based on Internet of things |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214100973U true CN214100973U (en) | 2021-08-31 |
Family
ID=77447635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022510035.3U Active CN214100973U (en) | 2020-11-02 | 2020-11-02 | Power distribution system based on Internet of things |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214100973U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112217288A (en) * | 2020-11-02 | 2021-01-12 | 中铁九桥工程有限公司 | Power distribution system based on Internet of things and control method thereof |
| CN116319859A (en) * | 2023-02-07 | 2023-06-23 | 托付保(南京)电力技术有限公司 | An Internet of Things gateway device and an Internet of Things monitoring system |
-
2020
- 2020-11-02 CN CN202022510035.3U patent/CN214100973U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112217288A (en) * | 2020-11-02 | 2021-01-12 | 中铁九桥工程有限公司 | Power distribution system based on Internet of things and control method thereof |
| CN116319859A (en) * | 2023-02-07 | 2023-06-23 | 托付保(南京)电力技术有限公司 | An Internet of Things gateway device and an Internet of Things monitoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111007433B (en) | Intelligent electricity utilization safety supervision system based on Internet of things | |
| CN206601600U (en) | A kind of computer room comprehensive monitoring system | |
| CN107807593B (en) | Power distribution room master control device, master control system and detection control method | |
| CN212970114U (en) | Comprehensive intelligent monitoring system for electrical equipment | |
| CN205811662U (en) | A kind of power distribution network intelligent monitor system | |
| CN203803011U (en) | Fire-fighting device inspecting and managing internet of things system | |
| CN103599617A (en) | Internet of Things system for monitoring and managing fire-fighting equipment | |
| CN105449846B (en) | A kind of direct current on-line monitoring management system and management method | |
| KR102391960B1 (en) | Power monitoring system and method thereof | |
| CN105978158A (en) | Intelligent video monitoring system for transformer station | |
| CN214100973U (en) | Power distribution system based on Internet of things | |
| CN103207616A (en) | Environmental information monitoring method for transformer substation | |
| CN112217288A (en) | Power distribution system based on Internet of things and control method thereof | |
| CN111787057A (en) | A campus network computer room data center computer room automatic management system | |
| CN103236746A (en) | Environmental information monitoring system of transformer substation | |
| CN106569461A (en) | Distributed power control device | |
| CN204360200U (en) | A kind of real-time monitoring system | |
| CN105223891A (en) | A kind of intelligent cabinet being applied to data center machine room | |
| CN204360202U (en) | Resources and environment monitoring early-warning system under network environment | |
| CN107807583A (en) | The internal environment detection method of electric power cabinet | |
| CN219611423U (en) | Intelligent ring main unit | |
| CN214098647U (en) | Intelligent power distribution room comprehensive monitoring system | |
| CN215010511U (en) | Multifunctional wireless communication electric fire monitoring device | |
| CN109634195A (en) | Environment dynamic monitoring system application management platform | |
| CN212645787U (en) | Computer lab power environmental monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |