CN109782052A - A kind of lightning counting device - Google Patents
A kind of lightning counting device Download PDFInfo
- Publication number
- CN109782052A CN109782052A CN201910202013.XA CN201910202013A CN109782052A CN 109782052 A CN109782052 A CN 109782052A CN 201910202013 A CN201910202013 A CN 201910202013A CN 109782052 A CN109782052 A CN 109782052A
- Authority
- CN
- China
- Prior art keywords
- controller
- lightning
- power supply
- counting
- measurement circuit
- 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.)
- Granted
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The present invention provides a kind of lightning counting device, electric current on arrester ground line is detected using opening current transformer, when lightning stroke, opening current transformer can sense that electric current passes through and generates induced current and be transferred to the first controller, add one by the number of lightning strokes of the first controller control the first display screen display, realize counting thunder function, due to using opening current transformer, it dismounts more convenient, and it is additionally provided with measurement circuit, lightning stroke situation can be simulated by being passed through electric energy to measurement circuit, judge whether lightning counting device can work normally with this, guarantee the normal operation of electric system, foundation is provided for power system fault analysis.
Description
Technical field
The present invention relates to distribution line anti-thunder technical field, in particular to a kind of lightning counting device.
Background technique
Arrester is the important device for protecting power equipment, and when being struck by lightning, lightning current can be introduced into the earth,
Electric system is prevented to be damaged, and in order to carry out certain grasp to lightning stroke to guarantee the normal operation of electric system, it designs
Lightning stroke counter, for being counted to the number of lightning stroke.
Existing lightning stroke counter is typically all to be fixed on the ground line of arrester, for acquiring whether ground line has electricity
Stream passes through to determine whether be struck by lightning, and when lightning stroke counter breaks down, needs to disassemble and repairs, disassembly difficulty
It is larger, maintenance efficiency is reduced, and staff is often difficult to judge whether lightning stroke counter can work normally, Wu Fabao
Demonstrate,prove the normal work of electric system.
Summary of the invention
For mirror with this, the present invention proposes a kind of lightning counting device, by measurement circuit input power, to test counting function
Can whether normal, and the current detecting to arrester ground line is realized using opening current transformer, if counting thunder fills
Failure is set, can be relatively easy to disassemble, improves maintenance efficiency.
The technical scheme of the present invention is realized as follows:
A kind of lightning counting device, including for being set on arrester ground line opening current transformer, for pair
Opening current transformer acquisition signal handled the first controller, the first display screen for showing number of lightning strokes, use
In the power supply and measurement circuit for carrying out self-test that provide power supply, first controller is mutual with opening electric current respectively
Sensor, the first display screen, power supply and measurement circuit electrical connection, the measurement circuit are set in opening current transformer
On, the measurement circuit and power supply electrical connection；First controller control power supply transmits electric energy to measurement circuit,
The opening current transformer, which incudes and generates signal, is transferred to the first controller, and first controller is mutual according to opening electric current
Counting on the first display screen of signal update of sensor transmission is shown.
It preferably, further include amplifying circuit for being amplified to the power supply that power supply transmits, the amplifying circuit
It is electrically connected respectively with power supply, measurement circuit.
It preferably, further include mechanical button for issuing from self-test signal to the first controller, the mechanical button and the
The electrical connection of one controller, presses the mechanical button, and the first controller control power supply transmits power supply to measurement circuit.
It preferably, further include solar panel for converting solar energy into electric energy, the solar panel is
Power supply charging.
Preferably, further include monitoring device for remotely being monitored and for carrying out data transmission with monitoring device
The first radio receiving transmitting module, first controller is electrically connected with the first radio receiving transmitting module, and the monitoring device includes the
Two radio receiving transmitting modules and self-test button, first radio receiving transmitting module and the second radio receiving transmitting module data connection, are pressed
The monitoring device after the self-test button is pressed to pass through the second radio receiving transmitting module transmission self-test signal to the first controller.
Preferably, the monitoring device further includes second controller for carrying out data processing and for showing lightning stroke
The second display screen of number, the second controller are electrically connected with second display screen, the second radio receiving transmitting module respectively, and described
Two controllers send self-test signal to the first controller by the second radio receiving transmitting module.
It preferably, further include counting box, first controller, power supply and measurement circuit are arranged in counting box
Portion, the opening current transformer are arranged outside counting box and are fixedly connected with counting box, and the first display screen setting exists
Outside counting box.
It preferably, further include fixation bracket for being fixed on distribution shaft tower, the fixed bracket is arranged in counting box
Outside is simultaneously integrally formed with counting box.
It preferably, further include the on-off switch for transmitting electric energy to measurement circuit for controlling power supply, first control
The on-off of device control on-off switch processed.
Compared with prior art, the beneficial effects of the present invention are:
The present invention provides a kind of lightning counting devices, are realized using opening current transformer to arrester ground line
Detection, and realize the counting and display of lightning stroke, since using the current transformer that is open, the dismounting of device is relatively simple, if going out
Existing failure can be dismantled in time to be repaired, and improves maintenance efficiency, while being provided with measurement circuit, can be by measurement circuit
Power supply is passed through to simulate lightning stroke situation, is worked with this to trigger lightning counting device, can be used for judging thunder in usual weather
Hit whether counting device can work normally, lightning counting device breaks down if judging, can repair in time more
It changes, guarantees the stable operation of electric system.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only the preferred embodiment of the present invention, for
For those of ordinary skill in the art, without any creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is that a kind of one embodiment of lightning counting device of the invention is applied to the schematic diagram in distribution shaft tower；
Fig. 2 is a kind of structural schematic diagram of one embodiment of lightning counting device of the invention；
Fig. 3 is a kind of structural representation of the opening current transformer of one embodiment of lightning counting device of the invention
Figure；
Fig. 4 is a kind of self-checking function schematic diagram of one embodiment of lightning counting device of the invention；
Fig. 5 is a kind of schematic diagram of one embodiment of lightning counting device of the invention；
In figure, 1 is opening current transformer, and 2 be the first controller, and 3 be the first display screen, and 4 be power supply, and 5 be to survey
Route is tried, 6 be amplifying circuit, and 7 be mechanical button, and 8 be solar panel, and 9 be the first radio receiving transmitting module, and 10 be the second nothing
Line transceiver module, 11 be self-test button, and 12 be second controller, and 13 be second display screen, and 14 be counting box, and 15 be fixed branch
Frame, 16 be on-off switch.
Specific embodiment
In order to be best understood from the technology of the present invention content, a specific embodiment is provided below, and do to the present invention in conjunction with attached drawing
Further instruction.
Referring to Fig. 1 to Fig. 5, a kind of lightning counting device provided by the invention, including for being set in arrester ground line
On opening current transformer 1, for opening current transformer 1 acquire signal handled the first controller 2, be used for
Show the first display screen 3, the power supply 4 for providing power supply and the measurement circuit 5 for carrying out self-test of number of lightning strokes,
First controller 2 is electrically connected with opening current transformer 1, the first display screen 3, power supply 4 and measurement circuit 5 respectively
It connects, the measurement circuit 5 is set on opening current transformer 1, and the measurement circuit 5 and power supply 4 are electrically connected；Described
One controller 2 controls power supply 4 and transmits electric energy to measurement circuit 5, and the opening current transformer 1 incudes and generates signal biography
The first controller 2 is defeated by, on the first display screen of signal update 3 that first controller 2 is transmitted according to opening current transformer 1
Counting show.
Acquisition unit in the present embodiment, using opening current transformer 1 as thunder-strike current, it is only necessary to by the electric current that is open
Mutual inductor 1 open, and make the ground line of arrester across opening current transformer 1, when being struck by lightning, thunder-strike current from
Arrester is introduced into ground line, and the current transformer 1 that is open at this time has sensed that electric current passes through and generate corresponding current signal, opens
The current signal of generation is transferred to the first controller 2 by mouthful current transformer 1, and the first controller 2, which receives, controls the after signal
Number on one display screen 3 adds one, i.e. expression number of lightning strokes adds one, realizes the statistics to lightning stroke quantity, due to using opening
Mouth current transformer 1, dismounting is all more convenient, if lightning counting device breaks down, can conveniently disassemble, real
It now replaces or repairs, guarantee the stable operation of electric system.
In order to guarantee the normal use of lightning counting device, the present embodiment is provided with measurement circuit 5, and measurement circuit 5 is arranged
On opening current transformer 1, the first controller 2 can control power supply 4 and transmit on electric energy to measurement circuit 5, thus mould
Quasi- lightning stroke, if lightning counting device function is normal, the current transformer 1 that is open can incude to obtain current signal and be transferred to first
Controller 2, the first controller 2 can then control the number of lightning strokes added up on the first display screen 3 and add one, judge counting thunder with this
The function of device is normal, guarantees normally count lightning stroke in thunderstorm weather, is the stable operation of electric system
It provides safeguard.
Lightning counting device of the invention further includes counting box 14, the first controller 2, power supply 4, measurement circuit 5 etc.
It is arranged in counting box 14, the outside of counting box 14 is then arranged in opening current transformer 1, and fixes and connect with counting box 14
It connects, when installing lightning counting device, it is only necessary to counting box 14 is fixed on distribution shaft tower, and wear the ground line of arrester
Crossing opening current transformer 1 can be completed installation, and device integral disassembly, assembly is more convenient.
And the installation of counting box 14 for convenience is provided with fixed bracket 15, fixed bracket in the outside of counting box 14
15 are integrally formed with counting box 14, during installation, directly fixed bracket 15 can be fixed on distribution shaft tower, realized solid
It is fixed.
It preferably, further include amplifying circuit 6 that the power supply for transmitting to power supply 4 amplifies, the amplification electricity
Road 6 is electrically connected with power supply 4, measurement circuit 5 respectively.
Since power supply 4 is used to what all parts were powered in itself, the electric energy of transmission may be not enough to allow
The current transformer 1 that is open incudes, so being transferred to the electricity of measurement circuit 5 to power supply 4 by adding an amplifying circuit 6
It can be carried out amplification, to guarantee the case where measurement circuit 5 can be struck by lightning with analogue ground line.
Lightning counting device itself does not need more power supply, so the power supply 4 in the present invention can be adopted
It is realized with chargeable storage.
Preferably, further include mechanical button 7 for issuing from self-test signal to the first controller 2, the mechanical button 7 with
The electrical connection of first controller 2, presses the mechanical button 7, and first controller 2 controls power supply 4 and transmits power supply to survey
Try route 5.
On lightning counting device, it is additionally provided with mechanical button 7, mechanical button 7 is arranged in the outside of counting box 14, passes through
Mechanical button 7 is pressed, self-test signal can be transmitted to the first controller 2, so that the first controller 2 can control power supply 4
Electric energy is transmitted into measurement circuit 5, simulation lightning stroke situation.
It preferably, further include solar panel 8 for converting solar energy into electric energy, the solar panel 8
For the charging of power supply 4.
For guarantee lightning counting device can be steady in a long-term operation, be additionally provided with solar energy in the outer surface of counting box 14
Solar panel 8 for received solar energy on daytime to be converted into electric energy, and charges for power supply 4, guarantees lightning counting device electricity
Source is sufficient.
Preferably, further include monitoring device for remotely being monitored and for carrying out data transmission with monitoring device
The first radio receiving transmitting module 9, first controller 2 is electrically connected with the first radio receiving transmitting module 9, and the monitoring device includes
Second radio receiving transmitting module 10, self-test button 11, second controller 12 and second display screen 13, the first wireless receiving and dispatching mould
10 data connection of block 9 and the second radio receiving transmitting module, the monitoring device is wireless by second after pressing the self-test button 11
Transceiver module 10 sends self-test signal to the first controller 2.
The invention also includes the monitoring device for remotely being monitored, monitoring device be can be set in monitoring room,
Including second controller 12, the second radio receiving transmitting module 10, second display screen 13 and self-test button 11, and inside counting box 14
It is additionally provided with the first radio receiving transmitting module 9, the first controller 2 and second controller 12 can pass through the first radio receiving transmitting module 9
Data interaction is carried out with the second radio receiving transmitting module 10, when being struck by lightning, 2 one side of the first controller is by counting thunder information
It is sent on the first display screen 3 and shows, on the other hand can be sent counting thunder information to by the first radio receiving transmitting module 9
Second controller 12, second controller 12 show number of lightning strokes information on second display screen 13, realize long-range monitoring.
First controller 2 and second controller 12 can realize the processing to data-signal using single-chip microcontroller, specifically
Can be using STM32 model single-chip microcontroller (such as STM32F101R8) on sale on the market, and the first radio receiving transmitting module 9 and the
Two radio receiving transmitting modules 10 can then be realized using Zigbee radio receiving transmitting module.
And the first radio receiving transmitting module 9 can not only send number of lightning strokes information, can also receive the biography of second controller 12
Defeated information, when monitoring personnel need it is long-range check whether counting thunder function normal when, by pressing self-test button 11, second
After controller 12 receives self-test signal, self-test information is sent to by the first controller 2 by the second radio receiving transmitting module 10, the
One controller 2 controls power supply 4 and transmits electric energy to measurement circuit 5, for simulating lightning stroke situation, to judge counting thunder function
Can whether normal.
It preferably, further include the on-off switch 16 for transmitting electric energy to measurement circuit 5 for controlling power supply 4, described the
The on-off of one controller 2 control on-off switch 16.
The present embodiment is provided with on-off switch 16 to realize the control for being transferred to measurement circuit 5 to power supply 4, only when
When first controller 2 receives self-test signal, the conducting of on-off switch 16 can be just controlled, so that power supply 4 can pass electric energy
It is defeated into measurement circuit 5, realize simulation test, on-off switch 16 can then realize using thyristor.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of lightning counting device, which is characterized in that including the opening Current Mutual Inductance for being set on arrester ground line
Device, the first controller for being handled the signal of opening current transformer acquisition, first for showing number of lightning strokes
Display screen, the power supply for providing power supply and the measurement circuit for carrying out self-test, first controller respectively with
Be open current transformer, the first display screen, power supply and measurement circuit electrical connection, and the measurement circuit is set in opening electricity
On current transformer, the measurement circuit and power supply electrical connection；The first controller control power supply transmission electric energy arrives
Measurement circuit, the opening current transformer, which incudes and generates signal, is transferred to the first controller, first controller according to
Counting on the first display screen of signal update of opening current transformer transmission is shown.
2. a kind of lightning counting device according to claim 1, which is characterized in that further include for being transmitted to power supply
The amplifying circuit that amplifies of power supply, the amplifying circuit is electrically connected with power supply, measurement circuit respectively.
3. a kind of lightning counting device according to claim 1, which is characterized in that further include for being sent out to the first controller
The mechanical button of self-test signal out, the mechanical button are electrically connected with the first controller, press the mechanical button, and described first
Controller controls power supply and transmits power supply to measurement circuit.
4. a kind of lightning counting device according to claim 1, which is characterized in that further include for converting solar energy into
The solar panel of electric energy, the solar panel are power supply charging.
5. a kind of lightning counting device according to claim 1, which is characterized in that further include for remotely being monitored
Monitoring device and the first radio receiving transmitting module for carrying out data transmission with monitoring device, first controller and first
Radio receiving transmitting module electrical connection, the monitoring device include the second radio receiving transmitting module and self-test button, and described first is wireless
Transceiver module and the second radio receiving transmitting module data connection, the monitoring device is wireless by second after pressing the self-test button
Transceiver module sends self-test signal to the first controller.
6. a kind of lightning counting device according to claim 5, which is characterized in that the monitoring device further include for into
The second controller of row data processing and second display screen for showing number of lightning strokes, the second controller is respectively with
Two display screens, the electrical connection of the second radio receiving transmitting module, the second controller send self-test letter by the second radio receiving transmitting module
Number to the first controller.
7. a kind of lightning counting device according to claim 1, which is characterized in that it further include counting box, first control
Device, power supply and measurement circuit processed are arranged inside counting box, and the opening current transformer is arranged outside counting box
And be fixedly connected with counting box, first display screen is arranged outside counting box.
8. a kind of lightning counting device according to claim 7, which is characterized in that further include for being fixed on distribution shaft tower
On fixation bracket, the fixed bracket is arranged outside counting box and is integrally formed with counting box.
9. a kind of lightning counting device according to claim 1, which is characterized in that further include being passed for controlling power supply
Transmission of electricity can arrive the on-off switch of measurement circuit, the on-off of the first controller control on-off switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910202013.XA CN109782052B (en) | 2019-03-18 | 2019-03-18 | Lightning stroke counting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910202013.XA CN109782052B (en) | 2019-03-18 | 2019-03-18 | Lightning stroke counting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109782052A true CN109782052A (en) | 2019-05-21 |
| CN109782052B CN109782052B (en) | 2020-01-07 |
Family
ID=66489633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910202013.XA Active CN109782052B (en) | 2019-03-18 | 2019-03-18 | Lightning stroke counting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109782052B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111929550A (en) * | 2020-09-15 | 2020-11-13 | 海南电网有限责任公司电力科学研究院 | Partial discharge judgment device for power equipment |
| CN112051437A (en) * | 2020-09-15 | 2020-12-08 | 海南电网有限责任公司电力科学研究院 | Transmission line thunderbolt detection device |
| CN112197810A (en) * | 2020-10-15 | 2021-01-08 | 海南电网有限责任公司 | Electric pole type selection recommendation system |
| CN117269587A (en) * | 2023-11-21 | 2023-12-22 | 国网辽宁省电力有限公司 | Lightning stroke detection device and method for high-voltage transmission line |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202870180U (en) * | 2012-10-24 | 2013-04-10 | 中国人民解放军理工大学气象学院 | Integrated device for monitoring thunder and ground electric field |
| CN203069702U (en) * | 2013-01-20 | 2013-07-17 | 四川省奥凌通信工程有限责任公司 | Lightning protection equipment intelligence monitoring system |
| CN106771819A (en) * | 2017-01-05 | 2017-05-31 | 国网福建省电力有限公司泉州供电公司 | A kind of Portable arrester resistive leakage current detection means |
| CN107064709A (en) * | 2016-12-28 | 2017-08-18 | 上海欧忆能源科技有限公司 | Outdoor arrester |
| CN107817380A (en) * | 2017-09-14 | 2018-03-20 | 国网新疆电力公司经济技术研究院 | Transmission line of electricity Zinc-Oxide Arrester on-Line Monitor Device based on wireless telecommunications |
| CN207516435U (en) * | 2017-11-28 | 2018-06-19 | 江西省气象灾害防御技术中心 | A kind of counting device for being used to count number of lightning strokes |
| CN208076607U (en) * | 2018-03-21 | 2018-11-09 | 国家电网公司 | Counting thunder remote detection device |
| CN109063850A (en) * | 2018-07-26 | 2018-12-21 | 海南电网有限责任公司电力科学研究院 | A kind of lightning strike positioning system and method |
-
2019
- 2019-03-18 CN CN201910202013.XA patent/CN109782052B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202870180U (en) * | 2012-10-24 | 2013-04-10 | 中国人民解放军理工大学气象学院 | Integrated device for monitoring thunder and ground electric field |
| CN203069702U (en) * | 2013-01-20 | 2013-07-17 | 四川省奥凌通信工程有限责任公司 | Lightning protection equipment intelligence monitoring system |
| CN107064709A (en) * | 2016-12-28 | 2017-08-18 | 上海欧忆能源科技有限公司 | Outdoor arrester |
| CN106771819A (en) * | 2017-01-05 | 2017-05-31 | 国网福建省电力有限公司泉州供电公司 | A kind of Portable arrester resistive leakage current detection means |
| CN107817380A (en) * | 2017-09-14 | 2018-03-20 | 国网新疆电力公司经济技术研究院 | Transmission line of electricity Zinc-Oxide Arrester on-Line Monitor Device based on wireless telecommunications |
| CN207516435U (en) * | 2017-11-28 | 2018-06-19 | 江西省气象灾害防御技术中心 | A kind of counting device for being used to count number of lightning strokes |
| CN208076607U (en) * | 2018-03-21 | 2018-11-09 | 国家电网公司 | Counting thunder remote detection device |
| CN109063850A (en) * | 2018-07-26 | 2018-12-21 | 海南电网有限责任公司电力科学研究院 | A kind of lightning strike positioning system and method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111929550A (en) * | 2020-09-15 | 2020-11-13 | 海南电网有限责任公司电力科学研究院 | Partial discharge judgment device for power equipment |
| CN112051437A (en) * | 2020-09-15 | 2020-12-08 | 海南电网有限责任公司电力科学研究院 | Transmission line thunderbolt detection device |
| CN111929550B (en) * | 2020-09-15 | 2023-08-22 | 海南电网有限责任公司电力科学研究院 | Power equipment partial discharge judging device |
| CN112197810A (en) * | 2020-10-15 | 2021-01-08 | 海南电网有限责任公司 | Electric pole type selection recommendation system |
| CN112197810B (en) * | 2020-10-15 | 2022-10-04 | 海南电网有限责任公司 | Electric pole type selection recommendation system |
| CN117269587A (en) * | 2023-11-21 | 2023-12-22 | 国网辽宁省电力有限公司 | Lightning stroke detection device and method for high-voltage transmission line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109782052B (en) | 2020-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109782052A (en) | A kind of lightning counting device | |
| CN201173846Y (en) | Multifunctional bridge safe monitoring system | |
| CN101535820A (en) | An AC current sensor for measuring electric AC current in a conductor and an indicator system comprising such a sensor | |
| CN104882809B (en) | Multifunctional insulation operation rod | |
| CN205743270U (en) | Electric power overhaul alarm security fence | |
| CN104460614A (en) | Hotel energy-consumption intelligent remote monitoring and managing system | |
| CN103326468A (en) | Electrical equipment long-distance intelligent environmental monitoring warning device | |
| CN112051470A (en) | Transformer substation switch cabinet state on-line monitoring system based on big data | |
| KR101104320B1 (en) | Wireless current transformer for monitoring electric power line | |
| CN203350329U (en) | Online monitoring device of lighting current state of lighting arrester | |
| CN202443641U (en) | Electronic barrel and examination site assessment system for special operation examinations | |
| CN100588036C (en) | Earth lead suspension dismounting management system | |
| CN103513166A (en) | High-voltage grid ultraviolet ray online monitoring system | |
| CN207718635U (en) | A kind of traffic signals facility staff realtime monitoring system | |
| CN207148585U (en) | Remote comprehensive, which links, divides the intelligent bird driving device of whole body structure | |
| CN109946503A (en) | Unmanned plane high voltage testing device | |
| CN205489816U (en) | Automatic information debugging auxiliary assembly of transformer substation | |
| CN203191540U (en) | Pairing adjusting device for negative control terminal and ammeter | |
| CN209525391U (en) | A kind of contactless portable circuit resistance tester | |
| CN206074044U (en) | A kind of ring main unit data acquisition unit | |
| CN102121947A (en) | Streetlight terminal voltage collecting system | |
| CN209197839U (en) | A kind of water tower level measuring device | |
| CN109116144A (en) | A kind of prefix type terminal detection platform of distribution | |
| CN203433333U (en) | Tower mast remote on-line detection integrated system | |
| CN109782715A (en) | A kind of municipal works management and monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |