CN101188036A - Optical fiber surrounding guarding and laser night vision online monitoring system - Google Patents
Optical fiber surrounding guarding and laser night vision online monitoring system Download PDFInfo
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- CN101188036A CN101188036A CNA2007100519530A CN200710051953A CN101188036A CN 101188036 A CN101188036 A CN 101188036A CN A2007100519530 A CNA2007100519530 A CN A2007100519530A CN 200710051953 A CN200710051953 A CN 200710051953A CN 101188036 A CN101188036 A CN 101188036A
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Abstract
The invention provides an optical fiber peripheral warning and laser night viewing interlocking monitoring system, which comprises a surrounding alarm part, an internal tracing part and a network remote controlling part, wherein, an LD light source is connected to one end of an optical fiber enclosure, the other end of the optical fiber enclosure is accessed into a user PC computer through a data collecting card, a serial port of the user PC computer is connected with a tripod-head decoder through a signal analysis module, the image signal controlling port of the tripod-head decoder is connected with a camera, the camera is arranged inside a camera box that is connected with the tripod head, and a direction signal controlling port of the tripod-head decoder is connected to a tripod head; the two terminals of a network switcher are respectively connected with a main controlling PC computer and the user PC computer; the third terminal of the network switcher is connected to the net opening of a streaming media server that is arranged inside a host box, and the serial port of the streaming media server is connected with the tripod-head decoder; a lighting source arranged inside the host box is directly connected with a collimator and extender device that is arranged inside the camera box. The invention realizes the blind area free monitoring and the instant video monitoring, thereby having complete function, stable performance, sensitive reaction, long monitoring distance and clear and direct video.
Description
Technical field
The present invention relates to the monitoring field, particularly relate to a kind of supervisory system of utilizing optical fiber and laser night vision equipment.
Background technology
The watch-dog of complete function, stable performance is a focus of monitoring area research in recent years.Present supervisory system mainly is divided into following a few class:
1) utilizes the watch-dog of infrared eye, survey the infrared ray that object sends, be converted to video information and show in terminal by the heat seeking infrared eye.It can not influenced by light at night monitoring.
2) utilize microwave movement of objects detector, utilize the Doppler effect of microwave equipment, can detect people's invasion mobile object (containing the people) emission and reflection frequency difference.
3) ultrasound wave movement of objects detector: similar with the microwave mobile detector, but wavelength has difference, and ultrasonic frequency is more than 20KHz.
4) detect light formula mobile detector: its principle is to utilize two photoelectric cells to form the differential detection device, and the trace that can detect ambient light changes.
5) close-circuit television,closed-circuft televishon: monitor by the camera acquisition vision signal.
But their shortcoming is that detection is discontinuous, has the monitoring blind area; Device is subjected to external condition (as weather, other external heat source etc.) influence easily in addition, the rate of false alarm height, and investigative range is little, and security is low, suffers artificial destruction easily, also is subjected to electromagnetic interference (EMI) easily and makes systemic breakdown.Its system complex in addition, cost is higher and be difficult to extensive popularization and application.
At home, Fibre Optical Sensor has a wide range of applications in the monitoring field, is mainly used in temperature field, stress field, displacement field, the seepage field of dam and reservoir, and the security of dam monitoring is strengthened in the isoparametric monitoring in crack.Aspect Fibre Optical Sensor research, distributed fiberoptic sensor owing to have contains much information, simple in structure, reliability is high, the focus of easy to use, advantage becomes domestic and international research such as the ratio of performance to price is good, be subjected to extensive favor, Study of location wherein becomes very crucial core difficult point.
At present the distributing optical fiber sensing technology of report mainly contain multiplexing (as time division multiplex, wavelength-division multiplex, frequency division multiplexing etc.) technology quasi-distributed optical fiber sensor based on a plurality of discrete Fibre Optical Sensors, based on the distributed optical fiber temperature sensor of temperature and Raman effect relation and based on the distributed strain gauge of stress and Brillouin shift relation.Wherein quasi-distributed optical fiber sensing system complex structure and cost are higher.Current, the first two is planted the research of form and uses morely, and a kind of form in back is a sophisticated technology of just developing in recent years in the world, can be used to measuring optical fiber Strain Distribution along the line, and domestic research is just at the early-stage.In the brillouin distributed optical fiber sensing device, location technology mainly adopts optical time domain reflection (OTDR) technology, when being used for stress or vibrating sensing, it is very difficult will accurately measuring small Brillouin shift, therefore detection sensitivity is restricted, the location technology of pulse daley simultaneously requires to adopt short-pulse light source, also has influence on the feasibility of practical application.It is low that these distributing optical fiber sensing technology ubiquities sensitivity at present, and spatial resolution is poor, and it is short to detect distance, and the high difficulty of system cost can not satisfy requirement of actual application such as boundary defence.
And night vision technology all possesses crucial status in many monitoring fields such as frontier defense, public security, oil field, mines, especially under the situation of zero illumination, to the immediately monitoring of a target focus of Recent study especially.Abroad, the night vision device exploitation of band laser floor light is morning, and all there are similar products in Russia, Korea S, Japan and the U.S..The domestic relevant report that this series products is also arranged in recent years.On the report content, the product that is possessed on the domestic and international market possesses following characteristics at present:
1) carries the infrared laser lighting source, effectively increased surveillance distance; Laser illuminator is the invisible infrared lasers of naked eyes, and monitoring concealment is strong.
2) the integrated camera performance that is used for video acquisition has had great improvement, and the monitored picture quality has increased significantly.
This shows that the infrared laser night vision device has had significant progress for traditional low-light level night vision device on performance.But also there is following defective in the existing equipment on the market:
1) adopt the integrated structure design mostly, bulky, complex structure is not supported scan function, and monitoring range is little.
2) monitor video directly by display screen output, does not possess the network remote control function, does not support that the multi-user operates simultaneously yet.
3) equipment price costliness, cost performance is low, and upgrading space is little.
And traditional watch-dog adopts watch-dog directly to connect the way of output of display screen more, can't effectively control monitored picture.
Summary of the invention
Technical matters to be solved by this invention is: a kind of optical fiber surrounding warning and laser night vision cooperative monitoring system are provided, and there is not the monitoring blind area in this system, and is simple in structure, and the monitoring distance has clear and intuitive monitor video.
The technical solution adopted in the present invention is: this optical fiber surrounding warning and laser night vision cooperative monitoring system, its LD light source is connected to fiber fence one end, the fiber fence other end inserts user's PC by data collecting card, the serial ports of user's PC is connected to the The Cloud Terrace demoder by signal analyse block, the picture signal control mouth of The Cloud Terrace demoder is connected to video camera, video camera is installed in the shooting box that links to each other with The Cloud Terrace, and the bearing signal of The Cloud Terrace demoder control mouth then is connected to The Cloud Terrace; The master control PC is connected to a port of the network switch, another port of the network switch then is connected to user's PC, the 3rd port of the network switch then is connected to the network interface of the streaming media server in the mainframe box, and the serial ports of streaming media server then is connected to the The Cloud Terrace demoder; Lighting source in the mainframe box then is connected to collimator and extender device in the shooting box by three optical fiber, and the video port of streaming media server then links to each other with the video output of video camera by video line.
Adopt energy optical fiber to connect between described illumination LD and the collimator and extender device.
This system adopts and interferes method for sensing and time sequential pulse light-seeking method to determine alarm region.
Native system organically combines Fibre Optical Sensor alarm technique and laser night vision technology, has successfully realized non-blind area monitoring and instant video monitoring, complete function, stable performance.The system location accurately responds sensitivity, and instantaneity is strong; The monitoring distance, video is clear and intuitive, and rate of false alarm is low.
Description of drawings
Fig. 1 is the entire system structural drawing.
Fig. 2 is peripheral warning part-structure figure.
Work synoptic diagram when Fig. 3 is the optical fiber pressurized.
Fig. 4 interferes synoptic diagram for light signal.
Embodiment
As shown in Figure 1, native system can be divided into three parts on the whole:
A. peripheral alert device: constitute by fiber fence, semiconductor laser LD light source module, data collecting card and user's PC that alerting signal analysis software LABVIEW is housed.
B. internal trace equipment: this equipment is by streaming media server (IPC module), The Cloud Terrace demoder and user's PC of having the The Cloud Terrace of the box of making a video recording and video-see software RVU being housed, and auxiliary device is that lighting source and laser alignment beam-expanding system are formed.
C. network remote control: constitute by the master control PC that the main control software CCU that is used for distributing user PC rights of using is housed, the user's PC and the network switch that video-see software RVU are housed and handle peripheral alerting signal software LABVIEW.
The outermost of system is peripheral alert device, promptly be layered on the optical fiber under the guarded region outland, intrude into this zone as the people, optical fiber is oppressed, the fiber-optic signal that is sent on user's PC LABVIEW software will occur unusually, after LABVIEW software is done signal analysis, the particular location of being invaded is determined, so the signal analyse block to inner tracker is sent alarm command, signal analyse block is given the The Cloud Terrace demoder message transport of alarm region again, the The Cloud Terrace that control has picture pick-up device turns to alarm region, video camera begins to obtain image information, and by streaming media server (IPC module) through switch with image information display on the RVU video-see software on user's PC, the setting by main control software CCU of RVU software has obtained the control to The Cloud Terrace and demoder, and the staff just can rely on RVU software control picture pick-up device monitoring objective is followed the tracks of and to be recorded a video.
Lighting source in the internal system tracking equipment can adopt the Infrared High-Power semiconductor laser.At zero illumination environment, the night of promptly not having the ambient light source lighting, Infrared High-Power semiconductor laser in the internal system tracking equipment starts, and its emitted laser is sent in the shooting box by energy optical fiber, forms the illumination hot spot at guarded region after collimating and beam expanding system is handled.
The concrete principle of work of each several part:
1) peripheral alert device
This periphery alert device has mainly adopted distributing optical fiber sensing technology, Mach-Ze De phase demodulating technology and time sequential pulse light-seeking technology etc.
As shown in Figure 2, the pulse signal that is produced by the low temperature voltage source that combines temperature control device drives semiconductor laser LD and sends light signal.Light signal enters each road distributed sensing fiber respectively after coupling mechanism 1 beam split becomes multiple signals, because each road sensor fibre has echelon to change on length, therefore after each road light signal is coupled into an optical fiber once more by coupling mechanism 2, signal will produce delay inequality, thereby will be in different positions on time shaft, this has just realized utilizing time sequential pulse light-seeking technology to determine which road optical fiber has produced the light intensity variation.In addition, when propagating in any therein sensor fibre of light wave, as the i root, by coupling mechanism A
i(i=1,2,3,4....) can be divided into two paths of signals, the arbitrary road in two paths of signals is subjected to external influence will make the light signal phase place change, and carries the outgoing light wave of heat transfer agent thereby produce.And the phase change of light can not directly be measured, so after must being coupled once more through coupling mechanism Bi phase change being converted into light intensity changes--Here it is, and Mach-Ze Deccan relates to demodulation, and this multichannel exists the light signal of delay inequality to be coupled into one road light signal through coupling mechanism 2, convert light signal to electric signal by photoelectric conversion device and deliver to PC through the A/D data collecting card and carry out data processing at receiving end, send warning message at last.
As shown in Figure 3, optical fiber sensing technology is to utilize optical fiber not only to can be used as the propagation medium of light wave, and the light wave characteristic parameter (amplitude, phase place, polarization state, wavelength etc.) that characterizes light wave in optical fiber when propagating changes indirectly or directly because of the effect of extraneous factor (as temperature, pressure, strain, magnetic field, electric field, displacement, rotation etc.), thereby optical fiber can be surveyed various physical quantitys as sensing element.Exactly sensor fibre is placed environment to be measured in the native system, when being subjected to vibrating, sensor fibre is subjected to the vibration signal effect to cause fiber lengths, diameter and refractive index to change and produces phase of light wave to change.
Yet present photo-detector can only be surveyed the light intensity signal, and therefore phase signal that can not direct detection light takes certain mode to convert optical phase signal to corresponding light intensity signal always, realizes the demodulation of light phase.Modal light phase demodulation method is an interferometric method.The interference technique that is used for the light phase demodulation then has Mach-Ze De fiber optic interferometric method, michelson interferometry or the like.The michelson interferometry principle is simple, but owing to will adopt fine terminal reflector, back light has interference to light source, influences measuring accuracy.Therefore, in native system, we have adopted Mach-Ze De (M-Z) interference technique simple in structure, function admirable to carry out phase demodulating, and as shown in Figure 4, concrete grammar is as follows: light signal is by three-dB coupler C
1Enter after the beam split in the different sensor fibre of two-way, and this two paths of signals is by another three-dB coupler C
2Will interfere after the coupling, and as long as wherein one the tunnel phase change is arranged, the light intensity of interference light will change, thereby realize that phase change with light signal is converted into light intensity and changes.
As described in preface, when these light signals that have a delay inequality enter user's PC in the system by data collecting card after opto-electronic conversion, the alerting signal analysis software LABVIEW that installs on user's PC just can effectively analyze these signals, when signal occurs when unusual, then determine that in the position of time shaft which road sensor fibre has been subjected to extraneous infringement by signal, thereby determine the warning orientation, send warning message to signal analyse block then.
2) internal trace equipment groundwork principle
The video capture device that is adopted in the design is an alternation of day and night type integrated camera, adopts natural lighting daytime, is coloured image.At nightfall, under zero illumination situation, the infrared semiconductor laser that use equipment carries is black white image as lighting source.
Equipment adopts the Infrared High-Power semiconductor laser as lighting source, and the mode of taking energy optical fiber to export, output laser at the energy optical fiber tail end behind collimator and extender device (for example GRIN Lens) collimator and extender, over 300m, form the infrared illumination hot spot that a diameter is about 3m, illumination hot spot naked eyes are invisible, but its reflected light can be received by the CCD of video camera, thereby the image information of obtaining.
The view data that video camera is obtained is sent to streaming media server (IPC module) in the mainframe box through video line, and IPC is equivalent to a small-sized PC, and it is handled the back with view data and reaches user's PC by the network switch.In addition, the IPC module also links to each other with the The Cloud Terrace demoder, can be the direct supply that video camera provides 12V, and combines the software control of the functions such as rotation, convergent-divergent and focusing that realize video camera with user's PC.
3) principle of grid Long-distance Control
The control system core of equipment is the master control PC that main control software CCU is housed.The master control PC connects the IPC module by the network switch, and is that user's PC that video-see software RVU is housed is provided with subscriber channel and distributing user permission.User's PC also is connected with the network switch, utilize RVU software to land the CCU of master control PC after, can rely on CCU is the image that the subscriber channel direct viewing IPC module of its setting is gathered.Use manually control video camera rotary scanning of RVU software, and target is focused on and convergent-divergent, realize the instant following function of target, RVU software also provides the recording function of monitor video simultaneously.
After tested, the entire system response time is less than 2s, and rate of false alarm is less than 5%, can be under-40 ℃～+ 80 ℃ environment operate as normal, mission life was above 10 years.The laying length of peripheral alert device fiber fence be 300 meters to 10 kms, bearing accuracy then can reach ± 40m, detectable minimum pressure intensity reaches the 10-6Pa magnitude, response frequency is then between 100hz～5khz.And internal trace equipment adopts the general supply of 220V Alternating Current Power Supply, and the centre wavelength of the Infrared High-Power semiconductor laser in the mainframe box is 808nm, and shoot laser is exported by three energy optical fibers, and its single output power is 1.8W.The effective monitoring distance is 300m under zero illumination, and can increase the effective monitoring distance by the output power that improves the Infrared High-Power semiconductor laser.The illumination light spot diameter at 300m place is 3m, and can adjust the size of illumination hot spot by debugging collimator and extender device.The pal mode composite video is adopted in its video output.Adopt natural lighting daytime, be coloured image clearly; When utilizing the semiconductor laser illumination under zero illumination, be black white image clearly.
Claims (6)
1. an optical fiber surrounding is guarded against and the laser night vision cooperative monitoring system, it is characterized in that comprising peripheral alert device, internal trace equipment and network remote control section, the LD light source is connected to fiber fence one end, the fiber fence other end inserts user's PC by data collecting card, the serial ports of user's PC is connected to the The Cloud Terrace demoder by signal analyse block, the picture signal control mouth of The Cloud Terrace demoder is connected to video camera, video camera is installed in the shooting box that links to each other with The Cloud Terrace, and the bearing signal of The Cloud Terrace demoder control mouth then is connected to The Cloud Terrace; The master control PC is connected to a port of the network switch, another port of the network switch then is connected to user's PC, the 3rd port of the network switch then is connected to the network interface of the streaming media server in the mainframe box, and the serial ports of streaming media server then is connected to the The Cloud Terrace demoder; Lighting source in the mainframe box then is connected to collimator and extender device in the shooting box by three optical fiber, and the video port of streaming media server then links to each other with the video output of video camera by video line.
2. optical fiber surrounding warning as claimed in claim 1 and laser night vision cooperative monitoring system is characterized in that: be equipped with alerting signal analysis software and video-see software on described user's PC.
3. optical fiber surrounding warning as claimed in claim 1 and laser night vision cooperative monitoring system is characterized in that: be equipped with the main control software that is used for distributing user PC rights of using on the described master control PC.
4. optical fiber surrounding warning as claimed in claim 1 and laser night vision cooperative monitoring system is characterized in that: adopt energy optical fiber to connect between described lighting source and the collimator and extender device.
5. optical fiber surrounding warning as claimed in claim 1 and laser night vision cooperative monitoring system, it is characterized in that: the lighting source in the described mainframe box adopts the Infrared High-Power semiconductor laser.
6. optical fiber surrounding warning as claimed in claim 1 and laser night vision cooperative monitoring system is characterized in that: it adopts interferes method for sensing and time sequential pulse light-seeking method to determine alarm region.
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| CN101916492A (en) * | 2010-08-10 | 2010-12-15 | 卢军翔 | Optical fiber intelligent sensor used in security system |
| CN101937602A (en) * | 2009-07-02 | 2011-01-05 | 上海华魏光纤传感技术有限公司 | Multi-site optical fiber vibration invasion monitoring device |
| CN102055962A (en) * | 2011-01-12 | 2011-05-11 | 深圳市朗驰欣创科技有限公司 | Video monitoring system and method based on concentrated coder and decoder as well as concentrated coder and decoder |
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| CN102542707A (en) * | 2010-12-09 | 2012-07-04 | 北京航天长峰科技工业集团有限公司 | Land electronic fence monitoring system |
| CN101901530B (en) * | 2009-05-31 | 2012-08-15 | 中国石油天然气管道局 | Fiber interferometer-based region anti-intrusion light path system |
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| CN105551163A (en) * | 2016-02-29 | 2016-05-04 | 刘海 | Intelligent optical fiber antitheft device |
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| CN108099959A (en) * | 2018-01-26 | 2018-06-01 | 山西省自动化研究所 | Foreign body intrusion intellectual monitoring alarm system |
| CN110969793A (en) * | 2019-12-25 | 2020-04-07 | 珠海大横琴科技发展有限公司 | Method, system and storage medium for preventing ship intrusion at periphery of roundabout electronic purse net |
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| CN101901530B (en) * | 2009-05-31 | 2012-08-15 | 中国石油天然气管道局 | Fiber interferometer-based region anti-intrusion light path system |
| CN101937602A (en) * | 2009-07-02 | 2011-01-05 | 上海华魏光纤传感技术有限公司 | Multi-site optical fiber vibration invasion monitoring device |
| CN101916492A (en) * | 2010-08-10 | 2010-12-15 | 卢军翔 | Optical fiber intelligent sensor used in security system |
| CN102542707A (en) * | 2010-12-09 | 2012-07-04 | 北京航天长峰科技工业集团有限公司 | Land electronic fence monitoring system |
| CN102055962A (en) * | 2011-01-12 | 2011-05-11 | 深圳市朗驰欣创科技有限公司 | Video monitoring system and method based on concentrated coder and decoder as well as concentrated coder and decoder |
| CN102291451A (en) * | 2011-08-09 | 2011-12-21 | 上海交通大学 | Interactive digital media information service electronic label network system |
| CN102291451B (en) * | 2011-08-09 | 2013-09-25 | 上海交通大学 | Interactive digital media information service electronic label network system |
| CN102737462A (en) * | 2012-06-29 | 2012-10-17 | 天津大学 | Optical fiber distributed disturbance and video linkage long-distance circumference security monitoring system |
| CN102779384A (en) * | 2012-07-13 | 2012-11-14 | 北京铁龙恒通车辆装备有限公司 | Perimeter protection alarm system and method applying same |
| CN102779384B (en) * | 2012-07-13 | 2015-02-18 | 北京铁龙恒通车辆装备有限公司 | Perimeter protection alarm system and method applying same |
| CN103679988A (en) * | 2012-09-14 | 2014-03-26 | 成都扬帆电力制造有限公司 | Regional intruder alarm system |
| CN103473868A (en) * | 2013-08-30 | 2013-12-25 | 国网河南省电力公司漯河供电公司 | Safety rail for intelligent power maintenance site |
| CN103473868B (en) * | 2013-08-30 | 2016-05-11 | 国网河南省电力公司漯河供电公司 | A kind of intelligent electric power maintenance sites safe fence |
| CN104200592A (en) * | 2014-09-25 | 2014-12-10 | 北京世纪之星应用技术研究中心 | Perimeter protection alarm system utilizing linear displacement to detect invasion and linear displacement detector |
| CN105551163A (en) * | 2016-02-29 | 2016-05-04 | 刘海 | Intelligent optical fiber antitheft device |
| CN106680885A (en) * | 2016-12-30 | 2017-05-17 | 杭州后博科技有限公司 | Non-maintenance personnel on-tower two-stage detection method and system |
| CN107067609A (en) * | 2017-06-22 | 2017-08-18 | 云南电网有限责任公司昭通供电局 | Transformer station's optical fiber perimeter security protection monitoring system |
| CN108099959A (en) * | 2018-01-26 | 2018-06-01 | 山西省自动化研究所 | Foreign body intrusion intellectual monitoring alarm system |
| CN110969793A (en) * | 2019-12-25 | 2020-04-07 | 珠海大横琴科技发展有限公司 | Method, system and storage medium for preventing ship intrusion at periphery of roundabout electronic purse net |
| CN115035667A (en) * | 2022-05-13 | 2022-09-09 | 南京邮电大学 | Photon fence system for optical fiber mode division multiplexing real-time video transmission |
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