CN112072593A - But comprehensive equipment of automatic termination of remote control ground wire ice-melt - Google Patents
But comprehensive equipment of automatic termination of remote control ground wire ice-melt Download PDFInfo
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- CN112072593A CN112072593A CN202011052191.8A CN202011052191A CN112072593A CN 112072593 A CN112072593 A CN 112072593A CN 202011052191 A CN202011052191 A CN 202011052191A CN 112072593 A CN112072593 A CN 112072593A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Selective Calling Equipment (AREA)
Abstract
The invention discloses a comprehensive device capable of remotely controlling an automatic wiring device for ground wire ice melting, which comprises a main control module, an energy storage battery, an activation resistor, a heat dissipation fan, a switch, an encryption gateway, a camera and a meteorological sensor, wherein the main control module is respectively electrically connected with the energy storage battery, the activation resistor, the heat dissipation fan, the switch and the meteorological sensor, and the activation resistor is electrically connected with the heat dissipation fan. The convenience of equipment use is improved to a certain extent.
Description
Technical Field
The invention belongs to the technical field of ground wire ice melting automatic wiring equipment, and particularly relates to comprehensive equipment capable of remotely controlling a ground wire ice melting automatic wiring device.
Background
The existing operation mode of the ground wire ice-melting automatic wiring device is that after a manual control box and a power supply box are manually carried to the lower part of an iron tower, the ground wire ice-melting automatic wiring device on the iron tower is operated; because the iron tower of the power transmission line is generally far away from maintenance teams and groups, the time is consumed on the way, and the personal safety problem of rainy and snowy weather also exists; meanwhile, with the increasing installation of ground wire ice melting automatic wiring devices on more and more iron towers, the requirements on centralized management and remote control of the devices are more and more urgent.
However, in the existing practical application, no related equipment is used for remotely controlling the automatic wiring device for ground wire ice melting, a maintenance team is still required to be maintained to be operated below an iron tower, personal safety exists, and meanwhile, the device cannot be centrally managed.
Therefore, the comprehensive equipment capable of remotely controlling the automatic ground wire ice-melting wiring device is provided to solve the problem of remote control over the automatic ground wire ice-melting wiring device, so that the equipment can complete various control operations over the automatic ground wire ice-melting wiring device, collect various state parameters of the automatic ground wire ice-melting wiring device, realize communication with a transformer substation or a dispatching room through a 4G network, and improve the use convenience of the equipment to a certain extent.
Disclosure of Invention
The invention aims to provide comprehensive equipment capable of remotely controlling an automatic wiring device for ground wire ice melting, and aims to solve the problems that the prior art provided by the background art cannot realize the automatic wiring device for remotely controlling the ground wire ice melting, a team and a tower still need to be maintained for operation, personal safety exists, and the device cannot be centrally managed.
In order to achieve the purpose, the invention adopts the following technical scheme:
the integrated equipment of the automatic wiring device for remotely controlling ground wire ice melting comprises a main control module, an energy storage battery, an activation resistor, a cooling fan, a switch, an encryption gateway, a camera and a meteorological sensor, wherein the main control module is respectively electrically connected with the energy storage battery, the activation resistor, the cooling fan, the switch and the meteorological sensor, the switch is respectively connected with the encryption gateway and the camera through a network, and the activation resistor is electrically connected with the cooling fan;
the master control module comprises an MCU, an ice melting motor driver, a locking motor driver, a lora module, a power relay, a dial switch, a DC/DC switching power supply, a switching value input circuit, a TTL-to-Ethernet interface and an RS485 interface, wherein the MCU is electrically connected with the ice melting motor driver, the locking motor driver, the lora module, the power relay, the dial switch, the switching value input circuit, the TTL-to-Ethernet interface and the RS485 interface respectively, the activation resistor and the cooling fan are electrically connected with the power relay respectively, the TTL-to-Ethernet interface is electrically connected with the switch, and the DC/DC switching power supply is electrically connected with the energy storage battery.
Preferably, the RS485 interface is provided with two, one the RS485 interface with meteorological sensor electric connection, another the RS485 interface with energy storage battery electric connection for transmit BMS signal, the BMS data of energy storage battery and meteorological sensor's meteorological data collect in host system through the RS485 interface.
Preferably, the RS485 interface uses an isolation SR485 module, and a TVS diode, an air discharge tube, and a filter inductor device are arranged at an outlet of the RS485 interface, so as to improve the interference immunity of the communication line.
Preferably, the MCU completes execution of actions of all elements on the main control module, the ice melting motor driver is controlled by the MCU to enable a main motor of the automatic ground wire ice melting wiring device to rotate forward and backward, the locking motor driver is controlled by the MCU to complete locking or unlocking actions, the lora module is responsible for receiving a closing in-place signal transmitted by a 470MHz closing state sensor installed on an iron tower, the power relay is used for providing a large current to the activation resistor to discharge the energy storage battery, and the dial switch is used for subdividing the current precision of the motor driver.
Preferably, the DC/DC switching power supply is responsible for converting the 48V direct current into 12V direct current required by other components, the switching value input circuit is responsible for inputting peripheral sensor data, and the TTL-to-ethernet interface realizes the docking of the switch and the main control module.
Preferably, the MCU adopts an STM32 with an ARMCORTEX-M3 inner core, the crystal oscillator adopts an 8MHz passive crystal oscillator, and a chip analog power supply and an analog ground are connected with a 3.3V power supply through high-frequency magnetic beads; and meanwhile, a 0.1uF filter capacitor is arranged near each MCU power supply and used for filtering ripples on the power supply.
Preferably, the switching value input circuit uses an optical coupler to realize the isolated transmission of the switching value input signal, wherein DIO is the input signal, the voltage is 12V, a voltage stabilizing tube WI1 plays a role in stabilizing the voltage, a freewheeling diode VI1 can absorb the energy of the reverse electromotive force, and simultaneously a resistor and a capacitor form an RC filter circuit to filter the interference signal on the signal line, and at the output end of the optical coupler, the signal is converted into a 3.3V low-voltage signal which is pulled up by the resistor and then supplied to the MCU for processing.
Preferably, the inlet of the main control module is provided with a TVS diode, a piezoresistor, a common mode inductor and a filter capacitor device, so that the functions of static electricity prevention and surge prevention can be achieved, and the function of filtering power supply ripples can be achieved.
Compared with the prior art, the comprehensive equipment of the automatic wiring device capable of remotely controlling the ground wire ice melting has the following advantages that:
1. the invention mainly adopts a 4G communication mode to communicate with a platform, monitors the state of each device in real time through a camera and a sensor, after a transformer substation or a dispatching room sends a control instruction at a control host end, the control device at the side of a railway tower can drive the ground wire ice-melting automatic wiring device to instantly complete various instruction actions, collects various state parameters of the ground wire ice-melting automatic wiring device, realizes the communication with the transformer substation or the dispatching room through a 4G network, and improves the use convenience of the devices to a certain extent;
2. each device of the invention adopts a modular design, thereby saving the installation space;
3. the invention can collect the environment and equipment parameters near the iron tower during daily non-ice melting, report to a remote server through a 4G network, and remotely control the operation of the automatic wiring device for ground wire ice melting, thereby improving the ice melting efficiency;
4. the invention has automatic activation function, and can prolong the service life of the battery.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic circuit diagram of the switching value input module of the present invention;
FIG. 3 is a schematic diagram of the MCU and peripheral circuits of the present invention;
FIG. 4 is a circuit diagram of an RS485 interface and TTL-to-Ethernet interface according to the present invention;
FIG. 5 is a circuit diagram of the protection circuit at the power inlet of the present invention
In the figure: 1. a main control module; 2. an energy storage battery; 3. activating the resistor; 4. a heat radiation fan; 5. a switch; 6. encrypting the gateway; 7. a camera; 8. a meteorological sensor; 101. MCU; 102. a de-icing motor driver; 103. latching the motor drive; 104. a lora module; 105. a power relay; 106. a dial switch; 107. a DC/DC switching power supply; 108. a switching value input circuit; 109. TTL is converted into an Ethernet interface; 110. and an RS485 interface.
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. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. 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.
The invention provides a comprehensive device of an automatic wiring device capable of remotely controlling ground wire ice melting, which comprises a main control module 1, an energy storage battery 2, an activation resistor 3, a cooling fan 4, an exchanger 5, an encryption gateway 6, a camera 7 and a meteorological sensor 8, wherein the main control module 1 is respectively electrically connected with the energy storage battery 2, the activation resistor 3, the cooling fan 4, the exchanger 5 and the meteorological sensor 8, the exchanger 5 is respectively connected with the encryption gateway 6 and the camera 7 through a network, and the activation resistor 3 is electrically connected with the cooling fan 4;
the main control module 1 is used for completing control over actions of all equipment on the side of the iron tower and collection of parameters, the energy storage battery 2 uses a 48V lithium iron phosphate battery to provide energy for actions of all the equipment, the activation resistor 3 is used for performing discharge processing under the control of the main control module 1 when the energy storage battery 2 is in an overcharged state, the cooling fan 4 performs rapid cooling when the activation resistor 3 continuously generates heat through large current, the switch 5 is used for collecting image information and data uploaded by a camera and the main control module, the image information and the data are encrypted by the encryption gateway 6 and then communicated with a remote place through a 4G network, and each piece of equipment adopts a modular design, so that the installation space is saved;
the main control module 1 comprises an MCU101, an ice melting motor driver 102, a locking motor driver 103, a lora module 104, a power relay 105, a dial switch 106, a DC/DC switching power supply 107, a switching value input circuit 108, a TTL-to-Ethernet interface 109 and an RS485 interface 110, wherein the MCU101 is electrically connected with the ice melting motor driver 102, the locking motor driver 103, the lora module 104, the power relay 105, the dial switch 106, the switching value input circuit 108, the TTL-to-Ethernet interface 109 and the RS485 interface 110 respectively, an activation resistor 3 and a cooling fan 4 are electrically connected with the power relay 105 respectively, the TTL-to-Ethernet interface 109 is electrically connected with a switch 5, and the DC/DC switching power supply 107 is electrically connected with an energy storage battery 2;
the number of the RS485 interfaces 110 is two, one RS485 interface 110 is electrically connected with the meteorological sensor 8, the other RS485 interface 110 is electrically connected with the energy storage battery 2 and used for transmitting BMS signals, and BMS data of the energy storage battery 2 and meteorological data of the meteorological sensor 8 are collected in the main control module 1 through the RS485 interface 110;
the RS485 interface 110 uses an isolation SR485 module U18, and a TVS diode, an air discharge tube and a filter inductor device are arranged at an outlet of the RS485 interface to improve the anti-interference performance of a communication line;
the MCU101 completes execution of actions of all elements on the main control module 1, the ice melting motor driver 102 is controlled by the MCU to enable a main motor of the automatic ground wire ice melting wiring device to form positive and negative rotation, the locking motor driver 103 is controlled by the MCU to complete locking or unlocking actions, the lora module 104 is responsible for receiving a closing in-place signal transmitted by a 470MHz closing state sensor arranged on an iron tower, the power relay 105 is used for providing large current for an activation resistor to discharge an energy storage battery, and the dial switch 106 is used for subdividing the current precision of the motor driver;
the DC/DC switching power supply 107 is responsible for converting the 48V direct current into 12V direct current required by other components, the switching value input circuit 108 is responsible for inputting peripheral sensor data, and the TTL-to-ethernet interface 109 realizes the butt joint of the switch 5 and the main control module 1;
the MCU101 adopts an STM32 with an ARMCORTEX-M3 inner core, the crystal oscillator adopts an 8MHz passive crystal oscillator, and a chip analog power supply and an analog ground are connected with a 3.3V power supply through high-frequency magnetic beads; meanwhile, a 0.1uF filter capacitor is arranged near each MCU power supply and used for filtering ripples on the power supply;
the switching value input circuit 108 uses an optical coupler to realize isolated transmission of a switching value input signal, as shown in fig. 2, wherein DIO is an input signal and has a voltage of 12V, a voltage regulator tube WI1 plays a role in voltage stabilization, a freewheeling diode VI1 can absorb energy of reverse electromotive force, and resistors R53 and R54 and a capacitor C48 form an RC filter circuit to filter interference signals on a signal line, and at the output end of the optical coupler, the signal is converted into a 3.3V low-voltage signal which is pulled by a resistor R55 and then supplied to the MCU101 for processing;
the TVS diode, the piezoresistor, the common-mode inductor and the filter capacitor are arranged at the inlet of the main control module 1, so that the functions of static electricity prevention and surge prevention can be achieved, the function of filtering power supply ripples can be achieved, the electromagnetic compatibility of a power supply inlet is improved, the equipment has an automatic activation function, and the service life of a battery can be prolonged.
The working principle is as follows: the main control module 1, the energy storage battery 2, the activation resistor 3, the cooling fan 4, the switch 5 and the encryption gateway 6 are intensively arranged at a position near an iron tower, after a control instruction is sent by a control host end of a transformer substation or a dispatching room, control equipment at the iron tower side can drive the ground wire ice-melting automatic wiring device to instantly complete various instruction actions, various state parameters of the ground wire ice-melting automatic wiring device are collected, communication with the transformer substation or the dispatching room is realized through a 4G network, the purpose of realizing communication with the transformer substation or the dispatching room through the 4G network is achieved, and the use convenience of the equipment is improved to a certain extent;
the main control module 1 can also collect the environment and equipment parameters near the iron tower during daily non-ice melting, and report the parameters to a remote server through a 4G network, so that the operation of the automatic wiring device for ground wire ice melting is conveniently controlled remotely, and the ice melting efficiency is improved to a certain extent.
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 modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a but automatic termination of remote control ground wire ice-melt synthesizes equipment, includes host system (1), energy storage battery (2), activation resistance (3), radiator fan (4), switch (5), encryption gateway (6), camera (7) and meteorological sensor (8), its characterized in that: the main control module (1) is electrically connected with the energy storage battery (2), the activation resistor (3), the cooling fan (4), the switch (5) and the meteorological sensor (8) respectively, the switch (5) is connected with the encryption gateway (6) and the camera (7) through a network respectively, and the activation resistor (3) is electrically connected with the cooling fan (4);
the main control module (1) comprises an MCU (101), an ice melting motor driver (102), a locking motor driver (103), a lora module (104), a power relay (105), a dial switch (106), a DC/DC switching power supply (107), a switching value input circuit (108), a TTL-to-Ethernet interface (109) and an RS485 interface (110), wherein the MCU (101) is electrically connected with the ice melting motor driver (102), the locking motor driver (103), the lora module (104), the power relay (105), the dial switch (106), the switching value input circuit (108), the TTL-to-Ethernet interface (109) and the RS485 interface (110) respectively, the activation resistor (3) and the cooling fan (4) are electrically connected with the power relay (105) respectively, and the TTL-to-Ethernet interface (109) is electrically connected with the switch (5), the DC/DC switching power supply (107) is electrically connected with the energy storage battery (2).
2. The integrated equipment of the automatic wiring device for ground wire deicing capable of being remotely controlled according to claim 1, characterized in that: RS485 interface (110) are provided with two, one RS485 interface (110) with meteorological sensor (8) electric connection, another RS485 interface (110) with energy storage battery (2) electric connection for transmit BMS signal, the BMS data of energy storage battery (2) and meteorological sensor (8) gather in host control module (1) through RS485 interface (110).
3. The integrated equipment of the automatic wiring device for ground wire deicing capable of being remotely controlled according to claim 1, characterized in that: the RS485 interface (110) uses an isolation SR485 module, and a TVS diode, an air discharge tube and a filter inductance device are arranged at an outlet of the RS485 interface to improve the anti-interference performance of the communication line.
4. The integrated equipment of the automatic wiring device for ground wire deicing capable of being remotely controlled according to claim 1, characterized in that: the device comprises a main control module (1), an MCU (101), an ice melting motor driver (102), a locking motor driver (103), a lora module (104), a power relay (105) and a dial switch (106), wherein the MCU (101) executes actions of all elements on the main control module (1), the ice melting motor driver (102) is controlled by the MCU to enable a main motor of the automatic ground wire ice melting wiring device to rotate forward and backward, the locking motor driver (103) is controlled by the MCU to complete locking or unlocking actions, the lora module is responsible for receiving a closing in-place signal transmitted by a 470MHz closing state sensor installed on an iron tower, the power relay (105) is used for providing large current for an activation resistor to discharge an.
5. The integrated equipment of the automatic wiring device for ground wire deicing capable of being remotely controlled according to claim 1, characterized in that: the DC/DC switching power supply (107) is responsible for converting 48V direct current into 12V direct current required by other components, the switching value input circuit (108) is responsible for inputting peripheral sensor data, and the TTL-to-Ethernet interface (109) is used for realizing the butt joint of the switch (5) and the main control module (1).
6. The integrated equipment of the automatic wiring device for ground wire deicing capable of being remotely controlled according to claim 1, characterized in that: the MCU (101) adopts an STM32 with an ARM CORTEX-M3 inner core, the crystal oscillator adopts an 8MHz passive crystal oscillator, and a chip analog power supply and an analog ground are connected with a 3.3V power supply through high-frequency magnetic beads; and meanwhile, a 0.1uF filter capacitor is arranged near each MCU power supply and used for filtering ripples on the power supply.
7. The integrated equipment of the automatic wiring device for ground wire deicing capable of being remotely controlled according to claim 1, characterized in that: the switching value input circuit (108) uses an optical coupler to realize the isolated transmission of the switching value input signal, wherein DIO is the input signal and the voltage is 12V, a voltage stabilizing tube WI1 plays a role in stabilizing the voltage, a fly-wheel diode VI1 can absorb the energy of reverse electromotive force, simultaneously a resistor and a capacitor form an RC filter circuit to filter interference signals on a signal wire, the signal is converted into a 3.3V low-voltage signal at the output end of the optical coupler, and the signal is pulled up by the resistor and then supplied to the MCU (101) for processing.
8. The integrated equipment of the automatic wiring device for ground wire deicing capable of being remotely controlled according to claim 1, characterized in that: the TVS diode, the piezoresistor, the common mode inductor and the filter capacitor are arranged at the inlet of the main control module (1), so that the functions of static electricity prevention and surge prevention can be achieved, and the function of filtering power supply ripples can be achieved.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011052191.8A CN112072593A (en) | 2020-09-29 | 2020-09-29 | But comprehensive equipment of automatic termination of remote control ground wire ice-melt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011052191.8A CN112072593A (en) | 2020-09-29 | 2020-09-29 | But comprehensive equipment of automatic termination of remote control ground wire ice-melt |
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| CN112072593A true CN112072593A (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011052191.8A Pending CN112072593A (en) | 2020-09-29 | 2020-09-29 | But comprehensive equipment of automatic termination of remote control ground wire ice-melt |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114039817A (en) * | 2021-11-05 | 2022-02-11 | 山东云则信息技术有限公司 | Intelligent edge computing 4G and 5G compatible data gateway based on Internet of things |
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| JPH02142314A (en) * | 1988-11-22 | 1990-05-31 | Toshiba Corp | Snow remover for transmission line and distribution line |
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| CN109038446A (en) * | 2018-08-24 | 2018-12-18 | 国网湖南省电力有限公司 | Intensive DC de-icing device and supervisory control of substation background information interaction platform |
| CN209709639U (en) * | 2019-05-30 | 2019-11-29 | 常州中能电力科技有限公司 | A kind of multiterminal confirmation ground wire deicing remote power feeding system |
| CN211014974U (en) * | 2019-08-12 | 2020-07-14 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Icing diagnostic device for overhead transmission line |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02142314A (en) * | 1988-11-22 | 1990-05-31 | Toshiba Corp | Snow remover for transmission line and distribution line |
| CN206410743U (en) * | 2017-02-13 | 2017-08-15 | 重庆广仁铁塔制造有限公司 | Based on internet+Intelligent Iron Tower monitoring system |
| CN109038446A (en) * | 2018-08-24 | 2018-12-18 | 国网湖南省电力有限公司 | Intensive DC de-icing device and supervisory control of substation background information interaction platform |
| CN209709639U (en) * | 2019-05-30 | 2019-11-29 | 常州中能电力科技有限公司 | A kind of multiterminal confirmation ground wire deicing remote power feeding system |
| CN211014974U (en) * | 2019-08-12 | 2020-07-14 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Icing diagnostic device for overhead transmission line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114039817A (en) * | 2021-11-05 | 2022-02-11 | 山东云则信息技术有限公司 | Intelligent edge computing 4G and 5G compatible data gateway based on Internet of things |
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Application publication date: 20201211 |
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