CN107818663A - A kind of indoor intelligent safety protection method, system and medium based on WiFi networkings - Google Patents
A kind of indoor intelligent safety protection method, system and medium based on WiFi networkings Download PDFInfo
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- CN107818663A CN107818663A CN201710840742.9A CN201710840742A CN107818663A CN 107818663 A CN107818663 A CN 107818663A CN 201710840742 A CN201710840742 A CN 201710840742A CN 107818663 A CN107818663 A CN 107818663A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention provides a kind of indoor intelligent safety protection method, system and medium based on WiFi networkings, the indoor intelligent safety protection method, comprise the following steps:Step A, the WiFi signal of end generation is produced for reception signal;Step B, the WiFi signal received is analyzed and processed, and determine whether that anomalous event occurs and calculates corresponding alert levels, step C is performed when having detected anomalous event;Step C, alarm is sent according to alert levels.The beneficial effects of the invention are as follows:Compared with prior art, structure setting of the present invention is reasonable by the present invention, fixed reliable using simple, can not only realize to safety monitoring of the interior without dead angle, can more realize network interworking, improve efficiency, practicality is good.
Description
Technical field
The present invention relates to technical field of security and protection, more particularly to a kind of indoor intelligent safety protection method based on WiFi networkings, it is
System and medium.
Background technology
Gradually popularized with continuous progressive and innovation, the remote monitoring system of technology.Traditional indoor monitoring method
Mainly it is sent to alarm host machine using the method for camera or infrared ray, gathered data and goes to handle.But the limitation of this technology
Property it is very big, such as camera is easy to produce dead angle, leaks the privacy concern under camera cruelly, and the detection range of infrared ray has
There is certain angle.
The content of the invention
The invention provides a kind of indoor intelligent safety protection method based on WiFi networkings, comprise the following steps:
Step A, the WiFi signal of end generation is produced for reception signal;
Step B, the WiFi signal received is analyzed and processed, and determine whether that anomalous event occurs and calculated corresponding
Alert levels, step C is performed when having detected anomalous event;
Step C, alarm is sent according to alert levels.
As a further improvement on the present invention, the step B includes:
Step 1, CSI initial data is extracted from the WiFi signal received;
Step 2, traveling time length is T rectangular window, and the step-length of each window movement is t;
Step 3, part CSI data are intercepted out with actual time window;
Step 4, the range value and phase value in CSI data are extracted, processing, Ran Houji are filtered to CSI range values
The JS divergences of CSI range values are calculated, CSI phase informations are corrected, then to CSI phase information application random forests algorithms;
Step 5, weights are assigned to the JS divergences in step 4 and the result of random forests algorithm, calculates voting results, produced
Different alert levels;
Step 6, voting results are determined whether with anomalous event, no anomalous event then jumps to step 2, otherwise held
Row step C.
As a further improvement on the present invention, in the step C, alarm sends sound of blowing a whistle, short message including indoor equipment
User, Advise By Wire user, wechat is notified to notify user, nail nail to notify user and APP to notify user.
The invention provides a kind of WiFi security devices, including:
Signal receiving end, the WiFi signal of end generation is produced for reception signal;
Processing module, for the WiFi signal received to be analyzed and processed, and determine whether that anomalous event occurs and counted
Alert levels corresponding to calculation, start alarm modules when having detected anomalous event;
Alarm modules, for sending alarm according to alert levels.
As a further improvement on the present invention, the processing module includes memory, processor and storage on a memory
And following steps can be realized in the computer program of processor operation, the computing device described program:
Step 1, CSI initial data is extracted from the WiFi signal received;
Step 2, traveling time length is T rectangular window, and the step-length of each window movement is t;
Step 3, part CSI data are intercepted out with actual time window;
Step 4, the range value and phase value in CSI data are extracted, processing, Ran Houji are filtered to CSI range values
The JS divergences of CSI range values are calculated, CSI phase informations are corrected, then to CSI phase information application random forests algorithms;
Step 5, weights are assigned to the JS divergences in step 4 and the result of random forests algorithm, calculates voting results, produced
Different alert levels;
Step 6, voting results are determined whether with anomalous event, no anomalous event then jumps to step 2, otherwise held
Row step C.
As a further improvement on the present invention, in the alarm modules, alarm sends sound of blowing a whistle, short including indoor equipment
Letter notifies user, Advise By Wire user, wechat to notify user, nail nail to notify user and APP to notify user.
The invention provides a kind of computer-readable recording medium, computer program is stored thereon with, it is characterised in that should
The step of any one of claims 1 to 3 methods described is realized when program is executed by processor.
The invention provides a kind of indoor intelligent safety-protection system based on WiFi networkings, including any one of claim 4 to 6
The WiFi security devices, and:
Signal produces end, for producing WiFi signal;
Trunk module, the WiFi signal sent for reception signal generation end are simultaneously sent to the WiFi security devices, with
Realize the network interworking between multiple equipment.
As a further improvement on the present invention, including Cloud Server and smart machine, the WiFi security devices are multiple,
The WiFi security devices are connected by Internet network with the Cloud Server, and the Cloud Server passes through Internet
Network is connected with smart machine.
As a further improvement on the present invention, it is wireless router that the signal, which produces end,.
The beneficial effects of the invention are as follows:Compared with prior art, structure setting of the present invention is reasonable by the present invention, using simple,
It is fixed reliable, it can not only realize to safety monitoring of the interior without dead angle, can more realize network interworking, improve efficiency, it is practical
Property is good.
Brief description of the drawings
Fig. 1 is the WiFi signal operating process schematic diagram of the present invention.
Fig. 2 is the indoor intelligent safety-protection system structural representation of the present invention.
Fig. 3 is the structural representation of the wide area net type of the present invention.
Embodiment
As shown in figure 1, the invention discloses a kind of indoor intelligent safety protection method based on WiFi networkings, including following step
Suddenly:
Step A, the WiFi signal of end generation is produced for reception signal;
Step B, the WiFi signal received is analyzed and processed, and determine whether that anomalous event occurs and calculated corresponding
Alert levels, step C is performed when having detected anomalous event;
Step C, alarm is sent according to alert levels.
The step B includes:
Step 1, CSI initial data is extracted from the WiFi signal received;
Step 2, traveling time length is T rectangular window, and the step-length of each window movement is t;
Step 3, part CSI data are intercepted out with actual time window;
Step 4, the range value and phase value in CSI data are extracted, processing, Ran Houji are filtered to CSI range values
The JS divergences of CSI range values are calculated, CSI phase informations are corrected, then to CSI phase information application random forests algorithms;
Step 5, weights are assigned to the JS divergences in step 4 and the result of random forests algorithm, calculates voting results, produced
Different alert levels;
Step 6, voting results are determined whether with anomalous event, no anomalous event then jumps to step 2, otherwise held
Row step C.
In the step C, alarm sends sound of blowing a whistle, SMS notification user, Advise By Wire user, micro- including indoor equipment
Letter notifies user, nail nail to notify user and APP to notify user.
In stepb, after having indoor anomalous event to be detected, the grade for judging anomalous event is set according to user
Whether alert levels have been reached, for example indoor article falls, whether pet activity etc. will send alarm;If for example, reach alarm
Rank, the sound (sound of blowing a whistle etc.) of higher loudness is promptly sent indoors;If for example, reaching Alert Level, promptly use
Various ways notify user, including SMS notification user, Advise By Wire user, and APP notifies user etc..
The invention also discloses a kind of WiFi security devices, including:
Signal receiving end, the WiFi signal of end generation is produced for reception signal;
Processing module, for the WiFi signal received to be analyzed and processed, and determine whether that anomalous event occurs and counted
Alert levels corresponding to calculation, start alarm modules when having detected anomalous event;
Alarm modules, for sending alarm according to alert levels.
WiFi signal in signal receiving end receiving chamber, including directly transmit what is come from AP, also send out signal including AP
Arriving signal receiving terminal after being reflected afterwards by indoor multipath.
In processing module, judge to whether there is indoor invasion in wireless signal that signal receiving end receives for handling
Abnormal signal caused by behavior, so as to be inferred to interior, whether there occurs intrusion behavior.
The computer that the processing module includes memory, processor and storage on a memory and can run in processor
Program, following steps are realized during the computing device described program:
Step 1, CSI initial data is extracted from the WiFi signal received;
Step 2, traveling time length is T rectangular window, and the step-length of each window movement is t;
Step 3, part CSI data are intercepted out with actual time window;
Step 4, the range value and phase value in CSI data are extracted, processing, Ran Houji are filtered to CSI range values
The JS divergences of CSI range values are calculated, CSI phase informations are corrected, then to CSI phase information application random forests algorithms;
Step 5, weights are assigned to the JS divergences in step 4 and the result of random forests algorithm, calculates voting results, produced
Different alert levels;
Step 6, voting results are determined whether with anomalous event, no anomalous event then jumps to step 2, otherwise held
Row step C.
In the alarm modules, alarm sends sound of blowing a whistle, SMS notification user, Advise By Wire user including indoor equipment
User is notified with APP.
The invention also discloses a kind of computer-readable recording medium, computer program is stored thereon with, the program is located
The step of reason device realizes the method for the invention when performing.
As shown in Fig. 2 the invention also discloses a kind of indoor intelligent safety-protection system based on WiFi networkings, including it is described
WiFi security devices, and:
Signal produces end, for producing WiFi signal;
Trunk module, when room is open needs multiple equipment, then produce the WiFi signal that sends of end for reception signal
And the WiFi security devices are sent to, to realize the network interworking between multiple equipment, while trunk module also has reinforcement
The function of WiFi signal.
WiFi signal is collected by the signal receiving end of the WiFi security devices as caused by wireless access point (AP), then by
Processing module is analyzed signal, to judge whether indoor generation abnormal behaviour occurs, if the exception more than limit value
Behavior occurs, then gives alarm modules processing, and alarm modules are sent out according to the alert methods that user is set by webpage or APP
Go out corresponding alert methods, such as equipment sounds the alarm, SMS notification user, Advise By Wire user, wechat notifies user, nail
Nail notifies user and APP to notify user.User can also make personal settings to alert content.
By trunking come tandem signal, if signal produces the hypertelorism at end and signal receiving end or had multiple
In the presence of WiFi security devices, WiFi signal first receives via trunking caused by wireless access point (AP),
It is transmitted further to remote WiFi security devices.
As shown in figure 3, the indoor intelligent safety-protection system also includes Cloud Server and smart machine, the WiFi security devices
To be multiple, the WiFi security devices are connected by Internet network with the Cloud Server, and the Cloud Server passes through
Internet network is connected with smart machine.
It is wireless router that the signal, which produces end, that is, wireless access points (AP).
Smart machine can set warning mode, and smart machine gives WiFi security devices by WiFi information transfer,
WiFi security devices complete the setting to warning mode according to obtained information.Pass through this setting, of the user to warning mode
Property setting operation it is simple, use is more convenient.
Trunk module can receive WiFi signal, provide signal source for multiple equipment node, WiFi security devices need not
Wireless router is directly connected to, turns the transmission by trunk module process signal.By this setting, WiFi signal is enhanced, is realized
The networkings of more equipment, saves the time.
Smart machine is smart mobile phone or tablet personal computer, is the product commonly used in life.By this setting, product is more
It is close to the users, use is more convenient.
Real-time abnormal information is transferred to Cloud Server by WiFi security devices by Internet network, and Cloud Server passes through
The warning mode of the setting of user realizes corresponding alarm, and by this setting, range of choice is wider, and use is more convenient.
In sufficiently large application environment, there are a variety of building forms, mainly relay point mode and be combined with direct-connected mode,
The WiFi security devices are collected into the WiFi signal of AP points or relay point, via processing module conversion process, detect abnormal row
Then to give alarm modules processing, Cloud Server is transferred to by Internet network, is sent to by Cloud Server in wide area
User equipment in net, timely receives warning message.User can set alert methods and alert content, pass through Cloud Server
Logon web page or APP find the WiFi security devices for needing to set, and corresponding configuration information is transmitted, and complete personalization and set
Put.
The present invention monitors the intrusion behavior more convenient and efficient of interior using WiFi signal technology, is connect by accessing wirelessly
WiFi signal that access point (AP) issues analyzes the change of the WiFi signal caused by indoor intrusion behavior, so as to reality
When determine whether the generation of indoor intrusion behavior, area coverage is wider compared with conventional method, and light influences smaller, and privacy
Misgivings are reduced, and can equally be used in private space.And by the network interworking between each equipment, it can control and monitor enough
More and big rooms.Abnormal information is uploaded onto the server in real time by WiFi, and then notifies user.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (10)
1. a kind of indoor intelligent safety protection method based on WiFi networkings, it is characterised in that comprise the following steps:
Step A, the WiFi signal of end generation is produced for reception signal;
Step B, the WiFi signal received is analyzed and processed, and determine whether that anomalous event occurs and calculates corresponding alarm
Rank, step C is performed when having detected anomalous event;
Step C, alarm is sent according to alert levels.
2. indoor intelligent safety protection method according to claim 1, it is characterised in that the step B includes:
Step 1, CSI initial data is extracted from the WiFi signal received;
Step 2, traveling time length is T rectangular window, and the step-length of each window movement is t;
Step 3, part CSI data are intercepted out with actual time window;
Step 4, the range value and phase value in CSI data are extracted, processing is filtered to CSI range values, then calculates CSI
The JS divergences of range value, are corrected to CSI phase informations, then to CSI phase information application random forests algorithms;
Step 5, weights are assigned to the JS divergences in step 4 and the result of random forests algorithm, calculates voting results, produced different
Alert levels;
Step 6, voting results are determined whether with anomalous event, no anomalous event then jumps to step 2, otherwise performs step
Rapid C.
3. indoor intelligent safety protection method according to claim 1, it is characterised in that in the step C, alarm includes room
Interior equipment sends sound of blowing a whistle, SMS notification user, Advise By Wire user, wechat notify user, nail nail to notify user and APP to notify
User.
A kind of 4. WiFi security devices, it is characterised in that including:
Signal receiving end, the WiFi signal of end generation is produced for reception signal;
Processing module, for the WiFi signal received to be analyzed and processed, and determine whether that anomalous event occurs and calculated pair
The alert levels answered, start alarm modules when having detected anomalous event;
Alarm modules, for sending alarm according to alert levels.
5. WiFi security devices according to claim 4, it is characterised in that the processing module includes memory, processing
Device and storage on a memory and the computer program that can be run in processor, during the computing device described program realization with
Lower step:
Step 1, CSI initial data is extracted from the WiFi signal received;
Step 2, traveling time length is T rectangular window, and the step-length of each window movement is t;
Step 3, part CSI data are intercepted out with actual time window;
Step 4, the range value and phase value in CSI data are extracted, processing is filtered to CSI range values, then calculates CSI
The JS divergences of range value, are corrected to CSI phase informations, then to CSI phase information application random forests algorithms;
Step 5, weights are assigned to the JS divergences in step 4 and the result of random forests algorithm, calculates voting results, produced different
Alert levels;
Step 6, voting results are determined whether with anomalous event, no anomalous event then jumps to step 2, otherwise performs step
Rapid C.
6. indoor intelligent safety protection method according to claim 4, it is characterised in that in the alarm modules, alarm bag
Include that indoor equipment sends sound of blowing a whistle, SMS notification user, Advise By Wire user, wechat notify user, nail nail to notify user and APP
Notify user.
7. a kind of computer-readable recording medium, is stored thereon with computer program, it is characterised in that the program is held by processor
The step of any one of claims 1 to 3 methods described is realized during row.
8. a kind of indoor intelligent safety-protection system based on WiFi networkings, it is characterised in that including any one of claim 4 to 6 institute
WiFi security devices are stated, and:
Signal produces end, for producing WiFi signal;
Trunk module, the WiFi signal sent for reception signal generation end is simultaneously sent to the WiFi security devices, to realize
Network interworking between multiple equipment.
9. indoor intelligent safety-protection system according to claim 8, it is characterised in that:Including Cloud Server and smart machine,
The WiFi security devices are multiple, and the WiFi security devices are connected by Internet network with the Cloud Server, institute
Cloud Server is stated by Internet network with smart machine to be connected.
10. indoor intelligent safety-protection system according to claim 8 or claim 9, it is characterised in that:It is wireless that the signal, which produces end,
Router.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019184584A1 (en) * | 2018-03-26 | 2019-10-03 | 深圳大学 | Novel intelligent router capable of performing security monitoring, and alarm method |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101436336A (en) * | 2007-11-15 | 2009-05-20 | 中国科学院自动化研究所 | Intrusion detection system and method |
CN103401691A (en) * | 2013-07-18 | 2013-11-20 | 山东省计算中心 | Portable WiFi equipment invasion precautionary method |
WO2014042892A1 (en) * | 2012-09-13 | 2014-03-20 | Qualcomm Incorporated | Dynamic sounding control in wifi |
CN104821070A (en) * | 2015-03-24 | 2015-08-05 | 北京科技大学 | Security protection supervision method and system based on multiprotocol heterogeneous network |
CN105303743A (en) * | 2015-09-15 | 2016-02-03 | 北京腾客科技有限公司 | WiFi-based indoor intrusion detection method and device |
CN105405260A (en) * | 2015-12-15 | 2016-03-16 | 刘向阳 | Antitheft system and antitheft method based on wireless signals |
CN105451235A (en) * | 2015-11-13 | 2016-03-30 | 大连理工大学 | Wireless sensor network intrusion detection method based on background updating |
CN105809110A (en) * | 2016-02-24 | 2016-07-27 | 南京大学 | Behavior identification system and method based on wireless signal identity |
CN105894703A (en) * | 2016-05-11 | 2016-08-24 | 大博(武汉)科技有限公司 | Intelligent monitoring method, device and system based on WiFi |
CN106411433A (en) * | 2016-09-08 | 2017-02-15 | 哈尔滨工程大学 | WLAN-based fine-grained indoor passive intrusion detection method |
-
2017
- 2017-09-18 CN CN201710840742.9A patent/CN107818663B/en active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101436336A (en) * | 2007-11-15 | 2009-05-20 | 中国科学院自动化研究所 | Intrusion detection system and method |
WO2014042892A1 (en) * | 2012-09-13 | 2014-03-20 | Qualcomm Incorporated | Dynamic sounding control in wifi |
CN103401691A (en) * | 2013-07-18 | 2013-11-20 | 山东省计算中心 | Portable WiFi equipment invasion precautionary method |
CN104821070A (en) * | 2015-03-24 | 2015-08-05 | 北京科技大学 | Security protection supervision method and system based on multiprotocol heterogeneous network |
CN105303743A (en) * | 2015-09-15 | 2016-02-03 | 北京腾客科技有限公司 | WiFi-based indoor intrusion detection method and device |
CN105451235A (en) * | 2015-11-13 | 2016-03-30 | 大连理工大学 | Wireless sensor network intrusion detection method based on background updating |
CN105405260A (en) * | 2015-12-15 | 2016-03-16 | 刘向阳 | Antitheft system and antitheft method based on wireless signals |
CN105809110A (en) * | 2016-02-24 | 2016-07-27 | 南京大学 | Behavior identification system and method based on wireless signal identity |
CN105894703A (en) * | 2016-05-11 | 2016-08-24 | 大博(武汉)科技有限公司 | Intelligent monitoring method, device and system based on WiFi |
CN106411433A (en) * | 2016-09-08 | 2017-02-15 | 哈尔滨工程大学 | WLAN-based fine-grained indoor passive intrusion detection method |
Non-Patent Citations (2)
Title |
---|
朱海等: "基于信道状态的wifi环境感知技术", 《南京邮电大学学报(自然科学版)》 * |
石泽森: "基于Wi-Fi信号强度的设备无关被动室内定位与活动识别研究", 《第七届中国卫星导航学术年会论文集——S10 多源融合导航技术》 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019184584A1 (en) * | 2018-03-26 | 2019-10-03 | 深圳大学 | Novel intelligent router capable of performing security monitoring, and alarm method |
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