CN103996264A - Mobile intelligent security system based on wireless local area network (WLAN) communication - Google Patents
Mobile intelligent security system based on wireless local area network (WLAN) communication Download PDFInfo
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- CN103996264A CN103996264A CN201410192779.1A CN201410192779A CN103996264A CN 103996264 A CN103996264 A CN 103996264A CN 201410192779 A CN201410192779 A CN 201410192779A CN 103996264 A CN103996264 A CN 103996264A
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- security
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a mobile intelligent security system based on WLAN communication. The security system is composed of an infrared temperature sensor array, a sound acquisition array, an analysis device, a background processing system and a security vehicle, wherein the infrared temperature sensor array, the sound acquisition array and the analysis device make reaction to an accident, the background processing system analyses and determines an accident site, and the security vehicle carries out search onsite and transmits states of the accident in front. The background processing system locates the accident site in a certain intelligent algorithm, and intelligently instructs the security vehicle about reaching the accident site in the shortest time according to the accident states. On the basis that three sub systems, namely a sensor system, the security car and a wireless power supply, are communicated with the background processing system via the wireless communication system, the security system protects the security of a certain region.
Description
Technical field
The present invention relates to a kind of intelligent movable security system based on WLAN communication.
Background technology
The security work at night in the places such as present most of markets office building and warehouse mainly relies on manpower, and this has improved cost greatly, and human resources have security poor effect in limited time.Although comparatively novel dollying head security system has reduced cost to a certain extent, but shortage selectivity, by all videos monitor data upload server in the working time, cause the inessential information of a large amount of storage in server, cause the waste of storage space.
Summary of the invention
The present invention is in order to address the above problem; a kind of intelligent movable security system based on WLAN communication has been proposed; this system by the infrared temperature sensor array in protected space and sound collection array and analytical equipment to the monitoring abnormal state in this space; when occurring, accident, by background processing system, accident point is carried out to analyzing and positioning; and security car is sent to instruction; go to spot to check; improve on the basis of security system automaticity and security, reduce the use of unnecessary electric power and server storage space.
To achieve these goals, the present invention adopts following technical scheme:
An intelligent movable security system based on WLAN communication, comprises sensing system, background processing system, security car, wireless communication module and wireless power supply, wherein:
Described sensing system, comprise sound collection array and analytical equipment and infrared temperature sensor array, described sound collection array and analytical equipment are for analyzing the voice signal of the protected field of noise reduction microphone collection, and the microphone group of utilizing array to arrange accurately measures the relative angle of accident point and installation of sensors point;
Described infrared temperature sensor array, exercises supervision for the temperature conditions to protected space, and with a judgment means cooperating, for fire and personnel, illegally enter two kinds of accidents and protect;
Described judgment means is that a kind of basis presets the device that threshold value judges signal, for the collected signal of real-time judge, whether reach accident level, take local mounted mode, be installed in sensor side, by data line, directly transmit data, thereby guarantee the ageing of data;
Described background processing system, the data that gather for mathematical computations sensing system, pass to security car by result of calculation by wireless communication module;
Described security car, for accepting the control information of background processing system, completes control command;
Described wireless power supply, for providing electric weight and judgement dump energy to security car.
Described security car, comprise wireless remote control receiver module, controller, communication system, motor and battery management system, wherein, controller connects motor drive module, motor drive module connects motor, battery management system and controller two-way communication, battery management system is connected with accumulator and wireless charging module, controller and communication system two-way communication.
Described controller is connected with camera and audio collecting device, and described communication system comprises WiFi module.
Implementation method based on above-mentioned intelligent movable security system, specifically comprises the following steps:
(1) security car gathers the voice signal in protected field by noise reduction microphone, and transfer data in acoustic wave analysis device and analyze, analytical equipment is analyzed sound wave by FastICA algorithm, when non-ambient composition magnitudes of acoustic waves is greater than set threshold value, and the duration is greater than the maximum duration of acceptable disturbance, and analytical equipment judgement accident occurs;
(2) according to sound wave, reach the mistiming of the sensor of sound collection array, the angle of sound collection array apparatus relative to sound source, calculates the distance of sound source range sensor;
(3) infrared temperature sensor array is experienced the texts and pictures that human body or fire send, and judges, and the relative angle of accident point and installation of sensors point is accurately measured according to predefined standard;
(4) background processing system is accepted the analysis result of infrared temperature sensor array and acoustic wave analysis device, by induction apart from discrete time, determine accident point, security car coordinate, calculate and select shortest path, security car is sent to steering order, send the instruction of travelling along this path;
(5) when the battery management system on security car is found the too low deficiency of security car electric weight, background processing system will be according to other security car dump energy arrangement scheduling, coordinate the execution scene of the accident to check task, when security car is got back to and awaited orders, the battery management system on car judges whether to start wireless charging device according to dump energy.
In described step (2), the method for arranging of the sensor of described sound collection array is: at least arrange three sound collection sensors, according to place situation difference in size, adjust installation of sensors quantity, when protected field is not a cubic space, but one group of standalone sensor need to be installed in the region being combined by a plurality of cubes in each cube; Because the sensitiveest angular range of array-type sensor is limited; so can produce large measuring error taking measurement of an angle when too small; therefore when the height of a certain shielded cubic space and the ratio of bottom surface catercorner length are less than the sensitive angle of minimum of sensor array; need to increase the quantity of installation of sensors point; make its cooperating, thereby reduce the responsible region of each sensor.
In described step (2), if there is mounting article in space, in advance by its coordinate and size input background processing system.
In described step (3), when having personnel illegally to enter, infrared temperature sensor array will be experienced the heat radiation that human body gives out, and these data are passed in judgment means, and judgment means makes according to predefined standard the judgement that personnel illegally enter accident.
In described step (3), when having fire to occur, infrared temperature sensor array is experienced the temperature of flame in the very first time, and data are passed in judgment means.
In described step (5), in security car driving process, sensing system continues accident to monitor, if on the way accident disappears, security car is sent and returns to the instruction of awaiting orders a little.
In described step (5), WiFi module, camera and audio collecting device on security car is open mode, field data is transferred on server and is stored by WiFi, if guarantee that security car receives damage when execution accident point is checked task, the data of the scene of the accident is also retained.
Beneficial effect of the present invention is:
1. by using sensor to coordinate with security car, can reduce the human resources required to the security of a larger space, and this security system can free of discontinuities work, the security flaw of having avoided the intermittence of manual patrol to cause;
2. improved the dirigibility of route selection, while having barrier on patrol route, security car can get around and move on, and hunting robot can only wait for that obstacle disappears and this will increase operator on duty's at night workload, has reduced automaticity.；
3. reduced the cost that camera quantity and line related laying are installed, use wireless network to carry out Audio and Video data transmission, greatly saved the cost that transformation and maintenance nursing are installed, and improved to have reduced the unnecessary of place taken, can enhance productivity from the side;
4. by calculating, accurately judge place where the accident occurred point, facilitated operator on duty to take measures, improved security effect.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present invention;
Fig. 2 is schematic flow sheet of the present invention;
Fig. 3 is accident point localization method schematic diagram of the present invention;
Fig. 4 is distance-finding method schematic diagram of the present invention;
Fig. 5 is security bassinet structure schematic diagram of the present invention.
Embodiment:
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As Figure 1-Figure 4, a kind of intelligent movable security system based on WLAN communication, comprising:
1, sensing system:
1.1 sound collection array and analytical equipments
This device comprises sound collection array and acoustic wave analysis two parts.By noise reduction microphone, the voice signal in protected field is gathered, and transfer data in acoustic wave analysis device and analyze.Because the working time is night, so voice signal is very weak when accident free occurs, but can there is sound of the wind or other disturbances in short-term.The microphone group that array is arranged in addition can accurately measure the relative angle of accident point and installation of sensors point.Analytical equipment is analyzed sound wave by FastICA algorithm, when non-ambient composition magnitudes of acoustic waves is greater than set threshold value, and the duration be greater than the maximum duration of acceptable disturbance, analytical equipment judgement accident occurs.3 sound collection sensors are now set, and it is poor according to sound wave, to reach three sensor times, the angle θ s1 of sound collection array apparatus relative to source of students, θ s2, θ s3 can calculate the distance D s1 of three sensors of sound source distance, Ds2, Ds3.
Computing formula is as follows:
D
s2＝D
s1+Δ
t12×v
s (2)
D
s3＝D
s1+Δt
13×v
s (3)
1.2 infrared temperature sensor arrays
This device is for exercising supervision to the temperature conditions in protected space, and with a judgment means cooperating, for fire and personnel, illegally enter two kinds of accidents and protect.When having personnel illegally to enter, infrared temperature sensor array will be experienced the heat radiation that human body gives out, and these data are passed in judgment means, and judgment means makes according to predefined standard the judgement that personnel illegally enter accident.When having fire to occur, infrared temperature sensor array can be experienced in the very first time temperature of flame, and data are passed in judgment means.Judgment means is made the judgement of fire failure according to predefined standard.Because the thermal radiation temperature difference of the heat radiation of human body and flame is obvious, the accuracy of judgment means is very high.The infrared temperature sensor group that array is arranged in addition can accurately measure the relative angle of accident point and installation of sensors point.When above-mentioned two kinds of accidents occur, the mistiming that can survey according to three sensors and the thermal source recording and infrared temperature sensor array relative angle θ t1, θ t2, θ t3 can calculate the distance D T1 of three sensors of thermal source distance, DT2, DT3, Computing Principle is the same with sound collection array and analytical equipment.
Computing formula is as follows:
D
t2＝D
t1+Δt
12×v
l (5)
D
t3＝D
t1+Δt
13×v
l (6)
2, background processing system:
The analytical calculation of accident origination point is as follows:
When A point has an accident, sound collection array on 1,2,3 three angles and analytical equipment and infrared temperature sensor array can sense respectively the distance (time) apart from accident point, in the situation that the length in space (L) wide (W) high (H) is definite, can calculate A point
Coordinate (X
a, Y
a, Z
a)
In like manner, three sensors in the sensor on security car and corner interact, and the coordinate of security car also can be determined.Background processing system just can be sent instruction to security car, makes it approach accident point.
If there is mounting article in space, as desk sales counter etc., can be in advance by its coordinate and size input system, thus facilitate processor to determine that security car approaches the route of target.
For different places, space structure is different, and above-mentioned algorithm is only applicable in a cylinder space, so often need to suit measures to local conditions in actual security system design.For example bulk storage plant space structure is simpler, therefore the design of its security system can be substantially according to above-mentioned algorithm, and market or office space are often by a plurality of less spatial composings, need in principle sensor installation array respectively.Can bring higher cost like this.For this deficiency, the measure that we take is that acoustic control and temperature control sensor unit are used to but not sensor array in less space.Because if can determine that accident point is in a certain room, as long as security car enters room and just can scout accident, so there is no need to use sensor array to determine the particular location of accident.And array-type sensor is also lower to the Distance Judgment accuracy of accident point in a less space.
2.1 pairs of security cars send steering order
In determining security car coordinate (generally awaiting orders a little for security car), accident point coordinate and space, after the coordinate and size of mounting article, shortest path can be calculated and select to background processing system, and the instruction of travelling along this path is issued to security car.And in security car driving process by its location is reached travel route is carried out to calibration result.
In security car driving process, sensing system continues accident to monitor, if on the way accident disappears, security car is sent and returns to the instruction of awaiting orders a little.
When a plurality of accidents occur simultaneously, background processing system is carried out rational management according to await orders distance a little and the security car dump energy at a different place that await orders of accident point and several security cars to security car, realizes the fastest processing speed to accident.
3, security car:
The reception of 3.1 control signals and execution
On security car, be loaded with microwave wireless remote control reception module, can receive the steering order of being sent by background processing system.Signal receiving module is transferred to the signal receiving in the processor of security car, and this processor sends corresponding control signal according to the control signal of background processing system to motor drive module, thereby completes the instruction that will carry out.
The transmission of 3.2 Audio and Video data
Camera and microphone are installed on security car and are used for gathering Audio and Video data.WiFi module is also installed, the WiFi being used in connection space on security car.Camera and microphone are transferred to data on server and are stored by WiFi.Even if security car receives damage when execution accident point is checked task like this, the data of the scene of the accident also can be retained.
3.3 battery management system
The supporting battery management system of battery on security car, electric weight is monitored, and in real time dump energy information is sent to background processing system, if the too low task of checking that has been not enough to of a certain security car electric weight, background processing system will, according to other security car dump energy arrangement scheduling, coordinate the execution scene of the accident to check task.
4, security car is awaited orders a little:
4.1 wireless charging device
Security car relies on motor as driving force, and camera and wireless communication module etc. all needs Power supply, so security car needs in time battery to be charged.Finish the work, security car will be got back to and await orders a little at every turn.So we have installed wireless charging device awaiting orders.An embedded underground WiTri charge coil of awaiting orders, WiTri receiving coil is installed in security car bottom.When security car, get back to while awaiting orders, the battery management system on car judges whether to start wireless charging device according to dump energy.Wireless charging carries out the plug of attaching plug to security car without professional, therefore saved human resources, improved the automaticity of system.
5, wireless communication system (WiFi):
The LAN (Local Area Network) of use based on IEEE802.11 serial protocols builds a WLAN in this security system working range, realizes the communication between subsystems.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (10)
1. an intelligent movable security system of communicating by letter based on WLAN, is characterized in that: comprise sensing system, background processing system, security car, wireless communication module and wireless power supply, wherein:
Described sensing system, comprise sound collection array and analytical equipment and infrared temperature sensor array, described sound collection array and analytical equipment are for analyzing the voice signal of the protected field of noise reduction microphone collection, and the microphone group of utilizing array to arrange accurately measures the relative angle of accident point and installation of sensors point;
Described infrared temperature sensor array, exercises supervision for the temperature conditions to protected space, and with a judgment means cooperating, for fire and personnel, illegally enter two kinds of accidents and protect;
Described judgment means is that a kind of basis presets the device that threshold value judges signal, for the collected signal of real-time judge, whether reach accident level, take local mounted mode, be installed in sensor side, by data line, directly transmit data, thereby guarantee the ageing of data;
Described background processing system, the data that gather for mathematical computations sensing system, pass to security car by result of calculation by wireless communication module;
Described security car, for accepting the control information of background processing system, completes control command;
Described wireless power supply, for providing electric weight and judgement dump energy to security car.
2. a kind of intelligent movable security system based on WLAN communication as claimed in claim 1, it is characterized in that: described security car, comprise wireless remote control receiver module, controller, communication system, motor and battery management system, wherein, controller connects motor drive module, and motor drive module connects motor, battery management system and controller two-way communication, battery management system is connected with accumulator and wireless charging module, controller and communication system two-way communication.
3. a kind of intelligent movable security system based on WLAN communication as claimed in claim 2, is characterized in that: described controller is connected with camera and audio collecting device, and described communication system comprises WiFi module.
4. the implementation method of the intelligent movable security system based on described in any one in claim 1-3, is characterized in that: specifically comprise the following steps:
(1) security car gathers the voice signal in protected field by noise reduction microphone, and transfer data in acoustic wave analysis device and analyze, analytical equipment is analyzed sound wave by FastICA algorithm, when non-ambient composition magnitudes of acoustic waves is greater than set threshold value, and the duration is greater than the maximum duration of acceptable disturbance, and analytical equipment judgement accident occurs;
(2) according to sound wave, reach the mistiming of the sensor of sound collection array, the angle of sound collection array apparatus relative to sound source, calculates the distance of sound source range sensor;
(3) infrared temperature sensor array is experienced the texts and pictures that human body or fire send, and judges, and the relative angle of accident point and installation of sensors point is accurately measured according to predefined standard;
(4) background processing system is accepted the analysis result of infrared temperature sensor array and acoustic wave analysis device, by induction apart from discrete time, determine accident point, security car coordinate, calculate and select shortest path, security car is sent to steering order, send the instruction of travelling along this path;
(5) when the battery management system on security car is found the too low deficiency of security car electric weight, background processing system will be according to other security car dump energy arrangement scheduling, coordinate the execution scene of the accident to check task, when security car is got back to and awaited orders, the battery management system on car judges whether to start wireless charging device according to dump energy.
5. implementation method as claimed in claim 4, it is characterized in that: in described step (2), the method for arranging of the sensor of described sound collection array is: at least arrange three sound collection sensors, according to place situation difference in size, adjust installation of sensors quantity, when protected field is not a cubic space, but one group of standalone sensor need to be installed in the region being combined by a plurality of cubes in each cube; Because the sensitiveest angular range of array-type sensor is limited; so can produce large measuring error taking measurement of an angle when too small; therefore when the height of a certain shielded cubic space and the ratio of bottom surface catercorner length are less than the sensitive angle of minimum of sensor array; need to increase the quantity of installation of sensors point; make its cooperating, thereby reduce the responsible region of each sensor.
6. implementation method as claimed in claim 5, is characterized in that: in described step (2), if there is mounting article in space, in advance by its coordinate and size input background processing system.
7. implementation method as claimed in claim 4, it is characterized in that: in described step (3), when having personnel illegally to enter, infrared temperature sensor array will be experienced the heat radiation that human body gives out, and these data are passed in judgment means, judgment means makes according to predefined standard the judgement that personnel illegally enter accident.
8. implementation method as claimed in claim 4, is characterized in that: in described step (3), when having fire to occur, infrared temperature sensor array is experienced the temperature of flame in the very first time, and data are passed in judgment means.
9. implementation method as claimed in claim 4, is characterized in that: in described step (5), in security car driving process, sensing system continues accident to monitor, if on the way accident disappears, security car is sent and returns to the instruction of awaiting orders a little.
10. implementation method as claimed in claim 9, it is characterized in that: in described step (5), WiFi module, camera and audio collecting device on security car is open mode, field data is transferred on server and is stored by WiFi, if guarantee that security car receives damage when execution accident point is checked task, the data of the scene of the accident is also retained.
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| CN201410192779.1A CN103996264B (en) | 2014-05-08 | 2014-05-08 | A kind of intelligent movable security system based on WLAN communication |
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| CN106056820A (en) * | 2016-07-15 | 2016-10-26 | 珠海格力电器股份有限公司 | Home security device and control method thereof, home security system and air conditioner |
| CN108877141A (en) * | 2017-05-09 | 2018-11-23 | 同方威视科技江苏有限公司 | Safety zone monitoring system and method |
| CN109035679A (en) * | 2018-08-15 | 2018-12-18 | 成都理工大学 | Ad hoc network dynamic security direction board system based on technology of Internet of things |
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| CN109035679A (en) * | 2018-08-15 | 2018-12-18 | 成都理工大学 | Ad hoc network dynamic security direction board system based on technology of Internet of things |
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| Publication number | Publication date |
|---|---|
| CN103996264B (en) | 2016-04-20 |
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