CN107786535A - A kind of guard method of smart machine lightweight and wireless router based on wireless router - Google Patents
A kind of guard method of smart machine lightweight and wireless router based on wireless router Download PDFInfo
- Publication number
- CN107786535A CN107786535A CN201710795646.7A CN201710795646A CN107786535A CN 107786535 A CN107786535 A CN 107786535A CN 201710795646 A CN201710795646 A CN 201710795646A CN 107786535 A CN107786535 A CN 107786535A
- Authority
- CN
- China
- Prior art keywords
- smart machine
- wireless router
- lightweight
- security
- protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
- H04L63/1408—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic by monitoring network traffic
- H04L63/1416—Event detection, e.g. attack signature detection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
- H04L63/1441—Countermeasures against malicious traffic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
- H04L63/1441—Countermeasures against malicious traffic
- H04L63/1466—Active attacks involving interception, injection, modification, spoofing of data unit addresses, e.g. hijacking, packet injection or TCP sequence number attacks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
- H04L63/1441—Countermeasures against malicious traffic
- H04L63/1475—Passive attacks, e.g. eavesdropping or listening without modification of the traffic monitored
Abstract
The present invention proposes a kind of guard method of smart machine lightweight and wireless router based on wireless router.By way of disposing guard system in common home router, on the premise of not disposing hardware safety equipment additionally and not changing by protection smart machine, the security protection to accessed smart machine is completed.The present invention need not additionally purchase external hardware protection equipment, no additional hardware cost input, be easy to promote to domestic consumer；To protected smart machine without the requirement such as type, system, it is not necessary to change smart machine system, scheme universality is high；The reparation of known safe risk supervision is completed by active detecting and Passive Defence and unknown suspicious traffic intercepts the security protection of two aspects, and detection safeguard function can be extended by plug-in system, protection covering is comprehensive；By inserting warning information in the webpage that is browsed in user, the security response time can be reduced.The present invention can solve the safety problem that current smart machine faces to a certain extent.
Description
Technical field
The present invention relates to computer network security field, more particularly to a kind of smart machine lightweight protection scheme, more
Body, it is a kind of smart machine lightweight guard method based on wireless router and a kind of wireless router.
Background technology
As all things on earth interconnects the rise of (Internet of Everything) concept, Internet of Things (Internet of in addition
Things) the high speed development of technology, substantial amounts of smart machine are begun to appear among our life, are become in people's life
An indispensable part.However, these smart machines have also been introduced substantial amounts of peace while being offered convenience to our lives
Full problem, one layer of shade is coverd with to our Intelligent life.These smart machines had both included transformed next from traditional home appliance
Smart home, also include the smart machines of a large amount of new industry forms.Manufacturer lifts the market share, height to quickly dominate the market
Degree payes attention to the issue speed of new product rather than the safety problem of equipment, therefore a large amount of potential safety hazards are also with the height of smart machine
Speed develops and is introduced at the same time among equipment.Further, since smart machine belongs to the production of infrastructure class mostly in the market
Product (such as smart jack, router), the operative scenarios of these equipment often main flow sight away from people, with interacting for user
It is relatively fewer, almost have lost focus, therefore even if there is safety problem, user also is difficult to find and handled in time.And
Because a large amount of smart machines are, these conventional white household electrical appliances originally safe and reliable impression transformed next from conventional white household electrical appliances
Also allow user to respond with same view to the smart machine being converted, reduce user and the security risk of smart machine is realized,
This has just brought challenge to the security protection of smart machine.
The equipment such as traditional PC often use two class protection schemes when facing security risk.The first kind is external hardware protection
Scheme.Hardware safety equipment is disposed in device externals such as PC, such as hardware firewall, intruding detection system (IDS), intrusion prevention system
United (IPS) etc., and PC and extraneous network communication condition are monitored by these hardware devices, it is found that it is pre- safety problem timely responds to
It is alert, the safety of the equipment such as protection PC.Second class is in house software protection scheme, installs securing software in device interiors such as PC, such as
Software firewall, anti-virus software etc., the working condition of monitoring device by way of software, note abnormalities timely disposal.This
Two class schemes can protect the safe operation of the equipment such as traditional PC to a certain extent, however for current smart machine and
Speech, both schemes have its limitation, can not replicate and be generalized in the protection of smart machine.For external hardware protection scheme
For, user needs to buy deployment hardware safety equipment, and these equipment are mostly towards corporate client, often expensive, and one
As all the main use groups domestic consumer of smart machine can be allowed to be difficult to receive, shortage can more than the price of a smart machine
Row, it is larger to promote difficulty.And in house software protection scheme, it is also tired to install securing software inside smart machine
Difficult heavy, smart machine in the market is often embedded device, and being difficult under the support without manufacturer will be third-party anti-
Software installation is protected into firmware, that is, allows to that additional software is installed, due to the limitation of performance and resource, these softwares also would become hard to
The same high intensity security exception is monitored in PC environment.Further, since embedded environment also results in the type of smart machine
Various, the difference such as the equipment cpu instruction collection of different manufacturers different model, operating system, protection capacity of safety protection software manufacturer opens
Feel like jelly part without the image of Buddha two kinds of mainstream operation systems of Windows and Linux in the case where traditional the same of PC environment need to be adapted to x86 instruction set
Most user can be covered, it is necessary to develop the version of adaptation different model for a variety of instruction set several operation systems,
It is high to develop testing cost, the wish that software vendor develops this class method is not high.
In summary, the high speed development of current smart machine brings a large amount of safety problems, simultaneously because smart machine
The reason such as operative scenario and user security sense of risk, smart machine safety problem is caused to find that disposal is difficult, smart machine is anxious
Being essential a kind of will be directed to their mode of operations, different from the protection scheme of conventional method.
The content of the invention
The present invention proposes a kind of smart machine lightweight protection scheme based on wireless router.The program need not be used
Family extra purchase deployment exterior protection hardware, while pacify also without on the smart machine of system relative closure and resource-constrained
Securing software is filled, but lightweight guard system is disposed on the wireless router that smart machine can all connect, using without circuit
The smart machine of access is protected by the control ability of device advantage on the topology and network traffics.
The technical solution adopted by the present invention is as follows：
A kind of smart machine lightweight guard method based on wireless router, comprises the following steps：
1) lightweight guard system is disposed on wireless router；
2) active detecting and/or Passive Defence are carried out by the lightweight guard system, achieve a butt joint into intelligence set
Standby security protection.
Further, lightweight guard system initiation message early warning mechanism after safety problem is found.
Further, the active detecting is the safety of the smart machine using scanning plug-in unit periodic scanning and detection access
Situation, find and repair existing known security problem；The Passive Defence is the network that real-time analysis flows through wireless router
Flow, find out wherein in the presence of abnormal network connection and block in time, with the safety of the smart machine of protection access
Further, the scanning plug-in unit is provided by the scanning plug-in unit warehouse for being capable of online updating, for user according to intelligence
Unit type downloads required scanning plug-in unit on demand.
Further, the message early warning mechanism, it is to add warning information in the webpage that user will browse, makes user
The safety problem of smart machine can be known the very first time.
Further, the Web page flow of wireless router is flowed through using go-between's technology modification, realizing will in user
Warning information is added in the webpage browsed.
A kind of wireless router, disposes lightweight guard system thereon, and the lightweight guard system passes through active detecting
And/or Passive Defence, security protection is carried out to the smart machine of access.
Further, lightweight guard system initiation message early warning mechanism after safety problem is found.
Further, the lightweight guard system includes network traffics layer, security response layer, control and user mutual
Layer, the network traffics layer are mainly responsible for analyzing and processing the network data that flows through wireless router, to Passive Defence and
Message early warning mechanism provides support；The security response layer is mainly responsible for the business support work of active detecting, Passive Defence；Institute
The support in terms of control is mainly responsible for user mutual with user mutual layer is stated to work.
Further, the security response layer includes being used for the plug-in unit engine, detection plug-in unit and control for carrying out active detecting
Module, and for carrying out networking rule setup module, the network connection management module of Passive Defence；The control is handed over user
Alternating layers include web administration module, warning module.
Compared with traditional software or hardware safety scheme, the present invention has some following advantage：
1. external hardware protection equipment need not be purchased additionally, can be completed to institute using common household radio router
The security protection of smart machine is accessed, no additional hardware cost input, is easy to promote to domestic consumer.
2. pair protected smart machine is without the requirement such as type, system, it is not necessary to changes smart machine system, scheme is pervasive
Property it is high.
3. start with by active detecting and the aspect of Passive Defence two, known safe risk supervision reparation and unknown is completed
Suspicious traffic intercepts the security protection of two aspects, and detection safeguard function can be extended by plug-in system, and protection covering is comprehensive.
4. by inserting warning information in the webpage that is browsed in user, user's very first time can be allowed to obtain security risk,
Reduce the security response time.
Brief description of the drawings
Fig. 1 is the overall structure and lightweight guard system configuration diagram of the present invention program.
Fig. 2 is lightweight guard system protection mode operating diagram.
Fig. 3 is lightweight guard system active detecting pattern workflow diagram.
Fig. 4 is lightweight guard system Passive Defence pattern workflow diagram.
Fig. 5 is lightweight guard system warning module workflow diagram.
Embodiment
In order that those skilled in the art will better understand the technical solution of the present invention, and the purpose of the present invention, spy are made
Advantage of seeking peace can be more obvious understandable, technological core in the present invention is made with reference to the accompanying drawings and examples further details of
Explanation.
The core content of the present invention mainly includes：
1. active detecting pattern.Active detecting pattern is two kinds of protections that lightweight guard system provides on wireless router
One of pattern.In active detecting pattern, guard system will use the smart machine of scanning plug-in unit periodic scanning detection access
Security situation, trial go to find and repair existing known security problem.
2. Passive Defence pattern.Passive Defence pattern is another guarantor that lightweight guard system provides on wireless router
Shield pattern.In Passive Defence pattern, guard system will analyze the network traffics for flowing through router in real time, and trial goes to find out it
It is middle abnormal network connection to be present and block in time, the safety of protection access smart machine.
3. Risk-warning mechanism.With the mode such as mail, short message used by conventional securing software early warning is carried out to user not
Together, the guard system in this programme will use new message early warning mechanism.After guard system finds safety problem, it will make
The Web page flow of router is flowed through with go-between (Man-in-the-Middle, MITM) technology modification, i.e. will be clear in user
Warning information is added on the webpage look at so that user can know the safety problem of smart machine the very first time.
In the present invention, a set of smart machine lightweight based on wireless router is devised based on this programme and protects system
System, the smart machine safety of fragility can be protected, is described as follows：
The overall structure and guard system framework of whole embodiment are as shown in Figure 1.Only need to pacify on wireless router
Dress deployment lightweight guard system can complete mapping out the work for scheme, and smart machine is normal still according to original mode of operation
Work, without any parameter of configuration modification, the lightweight guard system disposed on wireless router is for protected intelligence
It is transparent for equipment.The system architecture of wherein lightweight guard system is broadly divided into network traffics layer, security response layer, control
Three layers of system and user mutual layer, wherein network traffics layer are mainly responsible for carrying out at analysis the network data for flowing through wireless router
Reason, support, including flow forwarding module, flow analysis module and flow editor's mould are provided to Passive Defence pattern and early warning mechanism
Block, wherein flow editor module are substantially carried out abnormal flow and judge and handle, and flow count update, refer to hereinafter to Fig. 4
Description；Security response layer is mainly responsible for the business support work of two protection modes, including the plug-in unit of active detecting pattern draws
Hold up, detect plug-in unit and control module, the management and disposal of networking rule setting, the network connection of Passive Defence pattern etc.；Control
Support in terms of being mainly responsible for user mutual layer with user mutual works, including provides the web administration page, Risk-warning module
Deng.
The protection mode operating diagram of above-mentioned lightweight guard system is as shown in Fig. 2 including Passive Defence pattern and master
Dynamic detection pattern.Passive Defence pattern is mainly the control energy in network topology structure and network traffics using wireless router
Power, research and application is carried out to the network traffics for flowing through wireless router, it is found that wherein abnormal connection blocks in time.Active detecting mould
Formula is mainly the smart machine accessed using renewable safety problem scanning plug-in unit periodic scanning, attempts to find wherein exist
Known security problem and reparation, can not repair then in time to user's early warning, wherein, scanning plug-in unit can online updating by one
Scan plug-in unit warehouse to provide, user can download required scanning plug-in unit on demand according to smart machine model.
For active detecting pattern workflow diagram as shown in figure 3, Y represents "Yes" in figure, N represents "No" (Y, N in Fig. 4, Fig. 5
Implication it is identical with this).The protection will be started execution by system at regular intervals, be broadly divided into following three steps：
1) plug-in unit extracts.System extracts the plug-in unit required for present scan from vulnerability scanning plugin library, and it is accurate to complete scanning
Standby work.
2) plug-in unit detects.System calls the scanning plug-in unit extracted successively, is loaded among scanning engine and runs, preservation is swept
Retouch testing result.
3) result responds.System is attempted to repair wherein according to scanning detecting result to the smart machine of safety problem be present
Safety problem, if it can not repair to warning module send message, notify user's security risk therein, allow user to locate as early as possible
Put.
Passive Defence pattern operating diagram is as shown in Figure 4.The protection will be performed in real time by system, be broadly divided into following four
Individual step：
1) network traffics forward.The network traffics for flowing through wireless router are forwarded to flow analysis processing module and worked as by system
In, subsequently to carry out the analyzing and processing work of flow.
2) network traffic analysis.System will analyze the network traffics forwarded, analyze its source address, destination address, source
The information such as port numbers, destination slogan, protocol type, flow content, judge to provide support for the abnormal flow of next step.
3) abnormal flow judges.System will be according to previous step flow analysis result, with reference to associated smart machine situation
Judge that the flow whether there is abnormal conditions, while judge whether the recent network traffics of the smart machine already exceed reasonable model
Enclose, if finding, network traffics have exception or already exceed limitation, and system will block this network connection automatically, and notify pre-
Alert abnormal behavior information of the module to user report smart machine, reminds user's timely processing.
4) flow count update.System will count the smart machine network traffics service condition each accessed, each
Secondary abnormal flow judge to upgrade in time after the operation network traffics of relevant device count.
The operating diagram of warning module is as shown in figure 5, be broadly divided into following four step：
1) packet positioning intercepts.Warning module will flow through the net of wireless router first after pre-alert notification is received
Attempt to find the HTTP packets for including web page contents in network data flow, intercept these packets subsequently to add early warning letter
Breath.
2) packet unpacks.Warning module will be analyzed the HTTP packets intercepted, and obtains protocol header therein
The contents such as information, code used mode, compress mode, then the load extraction in packet, solution are extruded according to these information
Come.
3) packet is changed.Load that warning module extracts to previous step carries out signature analysis, judge its whether be
Web page content.After confirmation is web page contents, warning module will be added using various ways in web page contents reminds user
The warning information of security risk.In order to prevent that other are impacted using the network communication of http protocol, warning module only has
Just load is modified after the load in confirming packet is Web page content.
4) packet reduces.Warning module complete warning information addition after, by amended load with new load
Form, new packet is Resealed according to the original packaged type of packet (coded system, compress mode etc.), is then sent
To destination address, the addition operation of warning information is completed.
It should be noted last that above case study on implementation is merely illustrative of the technical solution of the present invention and unrestricted, although
The present invention is described in detail using example, it will be understood by those within the art that, can be to the technology of the present invention
Scheme is modified or equivalencing, and without departing from the spirit and scope of technical solution of the present invention, it all should cover in this hair
Among bright right.
Claims (10)
1. a kind of smart machine lightweight guard method based on wireless router, it is characterised in that comprise the following steps：
1) lightweight guard system is disposed on wireless router；
2) active detecting and/or Passive Defence are carried out by the lightweight guard system, achieve a butt joint into smart machine
Security protection.
2. the method as described in claim 1, it is characterised in that the lightweight guard system starts after safety problem is found
Message early warning mechanism.
3. method as claimed in claim 1 or 2, it is characterised in that the active detecting is using scanning plug-in unit periodic scanning
With the security situation of the smart machine of detection access, find and repair existing known security problem；The Passive Defence is real
When analysis flow through the network traffics of wireless router, find out wherein in the presence of abnormal network connection and block in time, connect with protection
The safety of the smart machine entered.
4. method as claimed in claim 3, it is characterised in that the scanning plug-in unit is by being capable of the scanning plug-in unit storehouse of online updating
Storehouse is provided, and required scanning plug-in unit is downloaded on demand according to smart machine model for user.
5. method as claimed in claim 2, it is characterised in that the message early warning mechanism, be the net that will be browsed in user
Warning information is added in page, allows users to the safety problem that the very first time knows smart machine.
6. method as claimed in claim 5, it is characterised in that the Web of wireless router is flowed through using go-between's technology modification
Webpage flow, realize and add warning information in the webpage that user will browse.
7. a kind of wireless router, it is characterised in that lightweight guard system, the lightweight are disposed on the wireless router
Guard system carries out security protection by active detecting and/or Passive Defence to the smart machine of access.
8. wireless router as claimed in claim 7, it is characterised in that the lightweight guard system is finding safety problem
Initiation message early warning mechanism afterwards.
9. wireless router as claimed in claim 7 or 8, it is characterised in that the lightweight guard system includes network flow
Amount layer, security response layer, control and user mutual layer, the network traffics layer are mainly responsible for the network to flowing through wireless router
Data are analyzed and processed, and support is provided to Passive Defence and message early warning mechanism；The security response layer is mainly responsible for actively
Detection, the business support of Passive Defence work；The support controlled in terms of being mainly responsible for user mutual layer with user mutual
Work.
10. wireless router as claimed in claim 9, it is characterised in that the network traffics layer include flow forwarding module,
Flow analysis module and flow editor module；The security response layer includes being used for plug-in unit engine, the detection for carrying out active detecting
Plug-in unit and control module, and for carrying out networking rule setup module, the network connection management module of Passive Defence；The control
System includes web administration module, warning module with user mutual layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710795646.7A CN107786535A (en) | 2017-09-06 | 2017-09-06 | A kind of guard method of smart machine lightweight and wireless router based on wireless router |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710795646.7A CN107786535A (en) | 2017-09-06 | 2017-09-06 | A kind of guard method of smart machine lightweight and wireless router based on wireless router |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107786535A true CN107786535A (en) | 2018-03-09 |
Family
ID=61437888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710795646.7A Pending CN107786535A (en) | 2017-09-06 | 2017-09-06 | A kind of guard method of smart machine lightweight and wireless router based on wireless router |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107786535A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108809950A (en) * | 2018-05-21 | 2018-11-13 | 中国科学院信息工程研究所 | A kind of wireless router guard method and system based on high in the clouds PowerShadow |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030188189A1 (en) * | 2002-03-27 | 2003-10-02 | Desai Anish P. | Multi-level and multi-platform intrusion detection and response system |
| CN103916451A (en) * | 2013-12-25 | 2014-07-09 | 武汉安天信息技术有限责任公司 | Security center system for intelligent terminal devices on basis of internet of things |
| CN105187395A (en) * | 2015-08-10 | 2015-12-23 | 济南大学 | Method and system for performing malicious software network behavior detection based on access router |
| CN106899579A (en) * | 2017-02-08 | 2017-06-27 | 北京网康科技有限公司 | The detection method and device of a kind of man-in-the-middle attack |
-
2017
- 2017-09-06 CN CN201710795646.7A patent/CN107786535A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030188189A1 (en) * | 2002-03-27 | 2003-10-02 | Desai Anish P. | Multi-level and multi-platform intrusion detection and response system |
| CN103916451A (en) * | 2013-12-25 | 2014-07-09 | 武汉安天信息技术有限责任公司 | Security center system for intelligent terminal devices on basis of internet of things |
| CN105187395A (en) * | 2015-08-10 | 2015-12-23 | 济南大学 | Method and system for performing malicious software network behavior detection based on access router |
| CN106899579A (en) * | 2017-02-08 | 2017-06-27 | 北京网康科技有限公司 | The detection method and device of a kind of man-in-the-middle attack |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108809950A (en) * | 2018-05-21 | 2018-11-13 | 中国科学院信息工程研究所 | A kind of wireless router guard method and system based on high in the clouds PowerShadow |
| CN108809950B (en) * | 2018-05-21 | 2020-10-16 | 中国科学院信息工程研究所 | Wireless router protection method and system based on cloud shadow system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yadav et al. | Architecture and security of SCADA systems: A review | |
| KR101679578B1 (en) | Apparatus and method for providing controlling service for iot security | |
| CN103051602B (en) | For safeguarding portable secure device and the method for checking information | |
| CN101667230B (en) | Method and device for monitoring script execution | |
| US20170289191A1 (en) | Infiltration Detection and Network Rerouting | |
| KR101788495B1 (en) | Security gateway for a regional/home network | |
| CN102438026A (en) | Industrial control network security protection method and system | |
| CN111935061B (en) | Industrial control host and network security protection implementation method thereof | |
| Al-Hawawreh et al. | Developing a security testbed for industrial internet of things | |
| CN104244281A (en) | Base station detection method and base station detection device | |
| WO2007124206A2 (en) | System and method for securing information in a virtual computing environment | |
| Pal et al. | IoT technical challenges and solutions | |
| Coppolino et al. | My smart home is under attack | |
| CN111177706A (en) | Process white list updating method based on trusted software library | |
| CN106789486A (en) | The detection method and device of shared access | |
| CN104038488A (en) | System network safety protection method and device | |
| CN107644165A (en) | Security protection platform and safety protecting method and device | |
| CN107786535A (en) | A kind of guard method of smart machine lightweight and wireless router based on wireless router | |
| Bytes et al. | Towards semantic sensitive feature profiling of IoT devices | |
| WO2010117155A2 (en) | System-on-chip malicious code detection apparatus for a mobile device | |
| KR100464567B1 (en) | A Method for Handling Intrusion Packet of Active Network using Sensor | |
| CN109218315B (en) | Safety management method and safety management device | |
| CN111314131A (en) | Task issuing method and device, storage medium and electronic device | |
| Aubet et al. | Graph-based anomaly detection for iot microservices | |
| CN105791271A (en) | Safety protection control method for power grid |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180309 |
|
| WD01 | Invention patent application deemed withdrawn after publication |