CN109326070A - A kind of perimeter security system and circumference security monitor method - Google Patents
A kind of perimeter security system and circumference security monitor method Download PDFInfo
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- CN109326070A CN109326070A CN201811397423.6A CN201811397423A CN109326070A CN 109326070 A CN109326070 A CN 109326070A CN 201811397423 A CN201811397423 A CN 201811397423A CN 109326070 A CN109326070 A CN 109326070A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
- G08B13/122—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a perimeter fence
- G08B13/124—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a perimeter fence with the breaking or disturbance being optically detected, e.g. optical fibers in the perimeter fence
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Abstract
The invention discloses a kind of perimeter security system and circumference security monitor methods.The system includes column, and the protection cable laterally laid on column, setting is further connected with vibration device with the conduction device for protecting cable to be connected, conduction device on column, vibration device connects vibration induction optical cable, and vibration induction optical cable is connected to distribution type fiber-optic detector.After stating protection cable by external force invasion generation deformation, the deformation effect for protecting cable is conducted to vibration device by conduction device and generates dither effect, vibration induction optical cable induction vibration effect is detected by distribution type fiber-optic detector and determines that external force invades and harasses information.The system can effectively solve the problem that the problems such as high, the detection inaccuracy of maintenance cost are built in circumference security protection to the detection of vibration induction by the conversion and optical fiber of stress effect and dither effect, and this system belongs to passive monitoring system, has anti-electromagnetic interference capability.
Description
Technical field
The present invention relates to field of security technology more particularly to a kind of perimeter security system and circumference security monitor methods.
Background technique
In existing circumference safety-security area, there are many monitoring technology means, including pulse electronic fence, infrared emission, laser
The technologies such as radar.The wherein technology that pulse electronic fence technology mainly protects fence area using high-voltage fence, it is infrared
To penetrating and laser radar technique mainly passes through optical scanning way and is monitored to the behavior for passing through particular optical region.
The deficiency that these fences in the prior art are primarily present has: first is that protection is segmented, due to fence
Used in detection sensor detection range it is limited, it usually needs fence is divided into multiple shield segments by distance, it is each
A shield segment is not only apart from limited, it is also necessary to a set of corresponding detection sensor be arranged, these detectors are then carried out group again
Net convergence, therefore the equipment of fence forms more, high construction cost；Second is that after fence is built up, when needing to carry out long
Between be uninterruptedly powered on work, big energy-consuming of powering, the recruitment demand of maintenance and repair is big, and the operation cost of fence is also very high；Three
Be monitoring accuracy it is inadequate, usually will appear false, fail to report problem, it is difficult to accurately identify various intrusion models.
For this reason, it is necessary to provide the perimeter security system to solve the above problems and circumference security monitor method.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of perimeter security systems, solve circumference security protection in monitoring model
Enclose, cost, precision etc. the technical issues of.
In order to solve the above technical problems, wrapping one technical scheme adopted by the invention is that provide a kind of perimeter security system
It includes in the spaced column of circumference, and the protection cable laterally laid on the column, is arranged on the column and anti-
The connected conduction device of cable is protected, the conduction device is further connected with vibration device, the vibration device connection vibration
Incude optical cable, the vibration induction optical cable is connected to distribution type fiber-optic detector；It is invaded and harassed and produces by external force when the protection cable
After raw deformation, the deformation effect of the protection cable is conducted to by the conduction device on the column that closes on described
Vibration device and generate dither effect, the vibration induction optical cable incudes the dither effect of the vibration device, and by described
The detection of distribution type fiber-optic detector determines the information that the protection cable is invaded and harassed by external force.
In another embodiment of perimeter security system of the present invention, the conduction device includes connect the protection cable the
One limit pull ring, and with the conduction cable that connect of the first limit pull ring, described in the other end of the conduction cable connects
Vibration device.
In another embodiment of perimeter security system of the present invention, the conduction cable is built in spool.
In another embodiment of perimeter security system of the present invention, the vibration device includes shell and is built in the shell
Internal deformation spring, one end of the deformation spring are provided with the second limit pull ring, and described second limits described in pull ring connection
Cable is conducted, is provided with moveable collision bead on the deformation spring；The shell of the vibration induction optical cable and the vibration device
Body is in close contact；Cause the deformation spring that shape occurs by the second limit pull ring when the conduction cable telescopic variation
Become, and then the inner wall for driving the collision bead to generate displacement and hitting the shell generates the dither effect, and by the vibration
Incude optical cable induction.
In another embodiment of perimeter security system of the present invention, only transmission divides from described in the vibration induction optical cable
The laser that cloth fiber-optical probe generates, the distribution type fiber-optic detector also receive the rear orientation light of the laser, and according to
This calculates the position of the vibration induction optical cable induction vibration.
In another embodiment of perimeter security system of the present invention, the distribution type fiber-optic detector includes narrow spaces laser
Device, the laser that the narrow spaces laser issues are input in the vibration induction optical cable by the second port of circulator, and
Photodetection then is output to from the third port of the circulator from the reflected back-scattering light of vibration induction optical cable
Device carries out photoelectric conversion by the photodetector, outputs electrical signals in signal acquisition process device and calculated.
In another embodiment of perimeter security system of the present invention, the outer layer covers of the vibration induction optical cable have metal skin
Layer.
The present invention also provides a kind of circumference security monitor embodiments of the method, are based on perimeter security system above-mentioned, including
Step: external force and conduction set up column in circumference, and on column laterally lay protection cable, when protection cable by
Strain is generated after to applied external force, then the strain effect is conducted to by vibration device by conduction device；Vibration conversion and
The strain effect is converted to dither effect by induction, the vibration device, then incudes the vibration by vibration induction optical cable
Effect, then the dither effect is transferred to by distribution type fiber-optic detector by the optical signal in optical cable；Monitoring identification, it is distributed
Fiber-optical probe tests and analyzes received optical signal, establishes inductive mode, and identify determine the protection cable by
The information that external force is invaded and harassed.
In another embodiment of circumference security monitor method of the present invention, in the external force and conduction step, including
Setting conduction cable, regulates and controls protection cable and the rate of tension for conducting cable, thus adjusts to outside on conduction device
The sensitivity of active force induction.
In another embodiment of circumference security monitor method of the present invention, in vibration conversion and sensing step, including
Distortion spring is set in the vibration device, the applied external force is further applied on distortion spring and generates deformation,
And collision bead is driven to be applied to the dither effect on the shell of the vibration device and generating single-frequency.
The beneficial effects of the present invention are: the invention discloses a kind of perimeter security system and security-protecting and monitoring methods.The system
Including column, and the protection cable laterally laid on column, the conduction device that setting is connected with protection cable on column, biography
It leads device to be further connected with vibration device, vibration device connects vibration induction optical cable, and vibration induction optical cable is connected to distribution
Formula fiber-optical probe.After stating protection cable by external force invasion generation deformation, the deformation of cable will be protected by conduction device
Effect is conducted to vibration device and generates dither effect, and vibration induction optical cable induction vibration effect is detected by distribution type fiber-optic
Device, which detects, determines that external force invades and harasses information.The system is by the conversion and optical fiber of stress effect and dither effect to vibration induction
Detection can effectively solve the problem that the problems such as high, the detection inaccuracy of circumference security protection construction maintenance cost, and this system belong to it is passive
Monitoring system, has anti-electromagnetic interference capability.
Detailed description of the invention
Fig. 1 is the composition schematic diagram of one embodiment of perimeter security system according to the present invention；
Fig. 2 is the composition schematic diagram of the conduction device in one embodiment of perimeter security system according to the present invention；
Fig. 3 is the composition schematic diagram of the vibration device in one embodiment of perimeter security system according to the present invention；
Fig. 4 is the classification composition figure of the inductive mode in one embodiment of perimeter security system according to the present invention；
Fig. 5 is the distribution type fiber-optic detector composition block diagram in one embodiment of perimeter security system according to the present invention；
Fig. 6 is the schematic cross-section of the vibration induction optical cable in one embodiment of perimeter security system according to the present invention；
Fig. 7 is the flow chart in one embodiment of circumference security monitor method according to the present invention.
Specific embodiment
To facilitate the understanding of the present invention, in the following with reference to the drawings and specific embodiments, the present invention will be described in more detail.
A better embodiment of the invention is given in the attached drawing.But the invention can be realized in many different forms, and unlimited
In this specification described embodiment.On the contrary, purpose of providing these embodiments is makes to the disclosure
Understand more thorough and comprehensive.
It should be noted that unless otherwise defined, all technical and scientific terms used in this specification with belong to
The normally understood meaning of those skilled in the art of the invention is identical.Used term in the description of the invention
It is the purpose in order to describe specific embodiment, is not intended to the limitation present invention.Term "and/or" packet used in this specification
Include any and all combinations of one or more related listed items.
Fig. 1 shows one preferred embodiment of perimeter security system of the present invention, is included in the spaced column 1 of circumference, with
And the protection cable 2 laterally laid on the column, setting and the conduction device 3 for protecting cable 2 to be connected on the column 1,
The conduction device 3 is further connected with vibration device 4, and the vibration device 4 connects vibration induction optical cable 5, the vibration
Induction optical cable 5 is connected to distribution type fiber-optic detector 6.After the protection cable 2 is invaded and harassed by external force generates deformation, by facing
The conduction device 3 on the close column 1 deformation effect of the protection cable 2 is conducted to the vibration device 4 and
Dither effect is generated, the vibration induction optical cable 5 incudes the dither effect of the vibration device 4, and passes through the distributed light
The fine detection of detector 6 determines the information that the protection cable 2 is invaded and harassed by external force.
Here protection cable 3 is usually the cables with preferable toughness such as adjustable rope, the wirerope of rate of tension,
And its deformation quantity is related to outside invasion power and the protection rate of tension of cable.The effect of conduction device 3 will protect cable 3
Deformation effect carries out being transmitted to vibration device, so that the vibration device 4 is corresponding to generate dither effect.And vibration induction optical cable 5 is then
It is that the dither effect can be incuded, it is vibrated is mainly based upon the optical signal transmitted the optical fiber in vibration induction optical cable 5 Nei
It is dynamic to influence its optical transmission characteristics, and optical transmission characteristics in vibration induction optical cable 5 are acquired by distribution type fiber-optic detector
And processing, so as to accurately obtain the information invaded and harassed by external force of protection cable 3, the information include external force invasion intensity,
Occur in contents such as the positions of protection cable.
Pass through embodiment illustrated in fig. 1, it can be seen that wherein it is only necessary to the propagating optical signals in vibration induction optical cable 5
Realize the detection invaded and harassed protection cable, and optical cable propagating optical signal have the characteristics that loss it is small, apart from remote, therefore this implementation tool
Have and saves cost, safeguards advantage easy to use and big detection range.
Preferably, as shown in Fig. 2, the conduction device 3 is L-shaped, top bending, lower vertical simultaneously passes through the column 1
It is mutually fixed with the pedestal, the conduction device 3 includes the first limit pull ring 31 for connecting the protection cable, the call wire
The other end of cable 32 connects the vibration device.Preferably, the conduction cable 32 is built in spool 33.Here the first limit
The displacement of pull ring 31 is limited, mainly plays the role of protection protection cable 2 and conduction cable 32, prevents both cable quilts
External force and there is excessive deformation to lose due toughness.Conduction cable 32 is conducted to the deformation effect of protection cable,
Mainly conduction cable 32 is stretched effect, which is also possible to the adjustable rope of rate of tension, wirerope etc.
Cable with preferable toughness.The outer spool 33 for adding one to play protective action on conduction cable 32 prevents conduction cable 32
Receiving other active forces influences and generates misinformation and lead, and in addition can also play the purpose of specification conduction cable wiring path, also can
Prevent multiple conduction cables from having an effect between each other power.
It is further preferred that as shown in figure 3, the vibration device 4 includes shell 41 and is built in inside the shell 41
Deformation spring 42, one end of the deformation spring 42 is provided with the second limit pull ring 43, and the second limit pull ring 43 connects
The conduction cable 32 is provided with moveable collision bead 44 on the deformation spring 42；The vibration induction optical cable 5 and the vibration
The shell 41 of dynamic device 4 is in close contact.Caused when conduction 32 telescopic variation of cable by the second limit pull ring 43
Deformation occurs for the deformation spring 42, and then drives the collision bead 44 to generate displacement and hit other collision beads, and then in the shell
The inner wall of body 41 generates dither effect, and incudes its dither effect by the vibration induction optical cable 5.
The conduction cable 32 limits the connection integrated with the vibration device 4 of pull ring 43 by the spool 33, second.
The connection type of this kind reinforces the conduction device 3 with 4 globality of vibration device, allows conduction by applying prestressing force
Cable 32 is in tight state so that vibration signal linking more naturally, transmitting it is more steady.
Vibration device can will be conducted to by conduction device by the active force of protection cable by the vibration device, and be somebody's turn to do
Vibration device is further through the effect of distortion spring so that collision bead hits shell, which is usually metal shell, this shock meeting
Since the impact force of different role to the shell of spring deformation is different, so that the dither effect of different frequency can be generated.In turn, quilt
Vibration induction optical cable incudes, its transmission characteristic under the action of different vibration frequencies of the light in the optical cable is different, therefore distributed
Fiber-optical probe can obtain the difference of the active force of protection cable thus according to the frequency characteristic detected, and then to protection
Invasion situation on cable carries out judgement identification.
Fig. 3 also shows that conduction device has two groups, and each group is correspondingly connected with a protection cable, and protects cable in column
On more can be arranged with parallel transverse.Also, further, the corresponding vibration device of each conduction device, for every
A piece protection cable is because external action generates deformation and then generates vibration.And each vibration device connects an independent vibration
Incude optical cable, while dither effect is passed to same root vibration induction by its corresponding vibration device by the same protection cable
Optical cable, and same root vibration induction optical cable is connected on a distribution type fiber-optic detector.
For this purpose, the distribution type fiber-optic detector can first establish inductive mode, then according to the frequency characteristic of actual measurement and
Different inductive modes is corresponded to, thus to improve accuracy in detection.
As shown in Figure 4, it is preferred that the inductive mode G1 includes closing on strong vibration mode G11, mainly ought nearby there is weight
Type vehicle passes through, big machinery is constructed etc., and the active force duration that protection cable can be made to sense is longer, protects cable sense
The distance answered is longer, and distribution type fiber-optic detector can detect vibration from the corresponding vibration device of multiple columns in this case
Innervation answers optical cable to sense the dither effect of upper frequency, and the duration is longer, also relatively more equal in the distribution of multiple columns
It is even, it is possible thereby to judge that belonging to the influence for closing on Construction Vibration generation avoids the strong vibration closed on it is possible thereby to which the scene of progress is checked
Dynamic interference.
Preferably, by having to the identification for closing on strong vibration mode including parameter: sense the column of vibration quantity and
Frequency, the duration of the vibration of the corresponding induction of each column of the vibration of the corresponding induction of spatial distribution, each column.It is excellent
Choosing, column (referred to as center stand column) corresponding to the maximum vibration frequency incuded in the column is to close on strong vibration
Position, close on the generation position of strong vibration it is possible thereby to determine.And what the column in the two sides of the center stand column was incuded
Vibration frequency is in the trend distribution for extending to two sides and being gradually reduced, it is possible thereby to which a vibration frequency threshold is arranged, works as detection
When the vibration frequency of the corresponding induction of the column arrived is greater than or equal to the vibration frequency threshold, it is believed that it is to vibrate in influence area,
When the vibration frequency of the corresponding induction of the column detected is less than the vibration frequency threshold, it is believed that be not in vibration influence area
It is interior, it is possible thereby to determine vibration influence area according to the corresponding detection frequency values of these columns.Preferably, these columns are corresponding
Vibration time it is identical, with lasting consistency of good time, but vibrating the opportunity occurred and center has one
Fixed randomness.
Preferably, the inductive mode G1 further includes wind and rain perturbation mode G12, and wind and rain weather occurs in mainly nature
It influences, the distance that the active force duration for protecting cable to sense is longer, cable is protected to incude can be made longer, such case
It is single that lower distribution type fiber-optic detector can detect that vibration induction optical cable senses from the corresponding vibration device of multiple columns
The dither effect of frequency, which is different from above-mentioned strong vibration bring upper frequency, and the duration is longer, multiple
The distribution of column is also relatively uniform, and can be combined with weather forecast situation, it can be determined that belong to the influence of nature wind and rain,
It is declared generally for such case it is noted that reducing false-alarm.
Preferably, have by the identification to wind and rain perturbation mode including parameter: sensing the quantity and sky of the column of vibration
Between distribution, the frequency of the vibration of the corresponding induction of each column, the corresponding induction of each column vibration duration.It is preferred that
, column corresponding to the vibration frequency incuded in the column is evenly distributed, and is exactly the vibration frequency tool of these columns induction
There is good consistency, without apparent center, and the duration is longer, it is steady to change, and is not in increase at any time
Add and obviously jumps the phenomenon that changing vibration frequency.
Preferably, the inductive mode G1 further includes birds perturbation mode G13, and mainly birds are parked at protection cable
When, the applied external force for protecting cable to sense can be made.In this case distribution type fiber-optic detector can be from a column
Or detect that vibration induction optical cable senses the dither effect of single-frequency on the corresponding vibration device of multiple adjacent columnss.It is preferred that
, when setting up more protection cables in parallel on column, disturbance parked to birds is generally only to act on one therein to prevent
Cable is protected, therefore when detecting to the corresponding vibration induction of a column, pays attention to distinguishing the vibration for carrying out single protection cable tie
Difference between effect detection and the dither effect detection come to how single protection cable tie, detection identification birds more advantageous in this way
Disturbance.Can with it is further preferred that adjustment it is described protection cable and conduct cable rate of tension, when rate of tension is larger, and
The weight of bird have it is smaller, then it is just very small by protection cable and the deformation that can generate of conduction cable, it is possible thereby to directly filter
Issuable false-alarm is resident to this bird.
Preferably, have to the identification of birds perturbation mode including parameter: sensing the column spatial distribution of vibration, this is stood
Column corresponds to the frequency of the vibration of more protection cable inductions, each duration for protecting cable to correspond to the vibration incuded.It is excellent
Choosing, the spatial distribution of the column has randomness and independence, usually only one or two tool in more protection cables
There is apparent dither effect to incude, and the duration is shorter, the vibration frequency value at the beginning and end of having is larger, and intermediate
Vibration frequency it is then smaller or do not have, this be corresponding birds just drop into protection cable and fly away from the active force of protection cable compared with
Greatly, the lesser reason of rolling power then generated after protection cable is fallen on.
Preferably, the inductive mode G1 further includes dangerous intrusion model G14, to protection when primarily directed to malicious intrusions
The destruction of cable and active force influence.In this case distribution type fiber-optic detector can be from a column or multiple corresponding
It detects that vibration induction optical cable senses the dither effect of upper frequency on vibration device, and the duration is shorter, or even goes out
Obviously there is the case where suddenly disappearing again in existing dither effect.
Preferably, have by the identification to dangerous intrusion model including parameter: sense the column of vibration spatial distribution,
The frequency of the vibration of the corresponding more protection cable induction of column, every protection cable correspond to the duration of the vibration of induction.
Preferably, for more protection cables are passed through the case where, the vibration frequency of more protection cable induction corresponding to same column
And duration is acquired, and obtains corresponding vibration frequency value and duration value, and then judges that identification is passed through protection cable and entered
It invades.Preferably, for the case where protecting cable and invading is cut, cause to conduct cable to since protection cable is cut suddenly
On tension loosen and apparent dither effect generated to vibration device, but the dither effect can weaken and disappear quickly, in turn
Judgement identification is cut protection cable and is invaded.
Preferably, the laser generated from the distribution type fiber-optic detector is only transmitted in the vibration induction optical cable,
The distribution type fiber-optic detector also receives the rear orientation light of the laser, and calculates the vibration induction optical cable induction accordingly
The position vibrated.This is because dither effect can be conducted to vibration induction optical cable by vibration device, thus cause in it
The transport properties of portion's laser, and identification is received by the distribution type fiber-optic detector and is determined to carry out position.It can be seen that at this
The only optical signal of vibration induction optical cable transmission in invention, without electric signal, and the transmission loss of laser in a fiber is extremely low,
Therefore the present invention has the clear superiority for saving power consumption, does not also have the high voltage that general fence generates, has better
Safety.
Preferably, as shown in figure 5, the inside composition of the distribution type fiber-optic detector includes narrow spaces laser 101, this swashs
The laser that light device 101 issues is input in vibration induction optical cable 105 by the second port of circulator 102, and from vibration induction
The reflected back-scattering light of optical cable 105 is then output to photodetector 103 from the third port of circulator 102, by photoelectricity
Detector 103 carries out photoelectric conversion, outputs electrical signals in signal acquisition process device 104 and is calculated.When vibration induction optical cable
Protection cable as circumference fence is disturbed or after cutting, it will leads to the Brillouin scattering light center frequency in back-scattering light
Rate is substantially change, and the variable quantity of the centre frequency is directly proportional to stress variation.
It is further preferred that distribution type fiber-optic detector is based on when vibration by the detection of external force position to protection cable
When innervation answers optical cable to sense dither effect, due to elasto-optical effect, the Brillouin scattering optical power of optical fiber corresponding position and center
Frequency will change, and Brillouin scattering optical power and frequency displacement and measured temperature and strain linear, such as following public affairs
Shown in formula:
Wherein, z is along the position of vibration induction optical cable, PB(T, ε) is distributed Brillouin scattering optical power, νB(T, ε) is point
Cloth Brillouin scattering optical frequency shift, wherein T indicates temperature, and ε indicates dependent variable, PB(T0,ε0) it is by testing in z0It is marked at position
Fixed reference Brillouin scattering optical power, νB(T0,ε0) it is by testing in z0The reference Brillouin scattering optical frequency demarcated at position
It moves.CP,T、CP,ε、Cν,TAnd Cν,εLinear coefficient to be come out by experimental calibration passes through reality for the pump wavelength of 1550nm
The empirical data tested is as shown in table 1:
The linear coefficient relationship of table 1 Brillouin scattering luminous intensity and frequency displacement and temperature and strain
Obtain these linear coefficients CP,T、CP,ε、Cν,TAnd Cν,ε, above-mentioned formula (1) is solved, available temperature and
Strain sensing amount is as follows:
Wherein, Δ T is temperature variation, and Δ ε is strain variation amount.
Based on above-mentioned analysis, it is seen that vibration induction optical cable can not only be quickly recognized by the distribution type fiber-optic detector
The opportunity vibrated, additionally it is possible to further calculate out corresponding position.
Preferably, a distribution type fiber-optic detector connects a vibration induction optical cable, feels to realize to a vibration
It answers the disturbance situation of optical cable to be detected, be also possible to a distribution type fiber-optic detector while connecting more vibration induction light
Cable, that is, distribution type fiber-optic detector described in separate unit at least connect two vibration induction optical cables, the vibration induction optical cable
Unidirectional setting or two-way setting detect the disturbance situation of more vibration induction optical cables to realize.
Preferably, the length for the vibration induction optical cable that a distribution type fiber-optic detector can monitor is 40 kms, when one
It, can be by this two vibration induction optical cable difference when platform distribution type fiber-optic detector can detecte two vibration induction optical cables simultaneously
The left and right sides of the distribution type fiber-optic detector is set, i.e., a distribution type fiber-optic detection may be implemented in two-way setting in this way
Device can detect 80 kilometers long of vibration induction cable length, greatly strengthen the investigative range of the distribution type fiber-optic detector.
In addition, what is propagated in vibration induction optical cable is optical signal, loss of signal is small, therefore for the whole energy of the embodiment of the present invention
Characteristic is its clear superiority.
It is preferred, therefore, that the distribution type fiber-optic detector at least accesses two adjacent vibration induction optical cables simultaneously, and can
To synchronize analysis to adjacent vibration induction optical cable and compare.
It is further preferred that the distribution type fiber-optic detector includes two ports of up and down direction, therefore two can be accessed
The vibration induction optical cable in direction so that the monitoring distance of separate unit distribution type fiber-optic detector 3 expands twice, such as maximum can be visited
Ranging is from being 80 kilometers.
It is visited as can be seen that single distribution type fiber-optic may be implemented in the perimeter security system embodiment used through the invention
Surveying device can be carried out the protecting, monitoring of long term distance, substantially prolong the effective monitoring distance of single monitoring device, and light
What is transmitted in fibre is optical signal, and signal transmission consumption is few, and the energy consumption of distribution type fiber-optic detector itself is also very low, thus significantly
Reduce the cost of system.
Preferably, the distance of adjacent columns is 20m, and the parallel interval of protection cable in-between on the same column is
20cm。
Preferably, the application scenarios as perimeter security system of the present invention, in railway, subway, highway, the south water to north
The system can be set up on the long ranges guardrail such as river alongshore, land and sea border defense, and can be improved according to the demand of detection range
The composition of distribution type fiber-optic detector, and the structure of vibration induction optical cable is improved, so that single distribution type fiber-optic detector prison
The distance for controlling detection is longer.
Preferably, since the outer layer covers of vibration induction optical cable have metal skin, the metal skin can also be used as confession
Electric body or optical cable are mixed with wire rope, if Fig. 6 is a kind of sectional view of preferred vibration induction cable configuration,
Wherein internal layer is optical cable 52, and outer layer is aluminium alloy wire 51.When the vibration induction optical cable of this structure detects disturbance and proposes to report
After police, then high voltage low current is provided to the metal skin of the vibration induction optical cable and is powered, can pass through vibration device, conduction
Device is transmitted on protection cable, to protect invasion.The disturbance that vibration induction optical cable had both been utilized in this mode is visited
Alarm is surveyed, while also can use the vibration induction optical cable and carrying out intrusion prevention, and also there is power saving effect, because only that
It just powers to the metal skin of vibration induction optical cable when the effective disturbance of vibration induction optical cable detection.
Based on same design, the present invention also provides a kind of security monitor embodiment of the method, this method embodiment is based on upper
State perimeter security system.As shown in Figure 7 comprising steps of
Step S101: external force and conduction set up column in circumference, and protection cable is laterally laid on column,
Strain is generated after protecting cable by applied external force, then the strain effect is conducted to by vibration dress by conduction device
It sets；
Step S102: the strain effect is converted to dither effect by vibration conversion and induction, the vibration device, then
The dither effect is incuded by vibration induction optical cable, then the dither effect is transferred to by distribution by the optical signal in optical cable
Fiber-optical probe；
Step S103: monitoring identification, distribution type fiber-optic detector test and analyze received optical signal, establish induction
Mode, and identify the information for determining that the protection cable is invaded and harassed by external force.
It preferably, include the setting conduction cable on conduction device in above-mentioned steps S101, to protection cable and conduction
The rate of tension of cable is regulated and controled, and the sensitivity to applied external force induction is thus adjusted.
Preferably, it is included in the vibration device in above-mentioned steps S102 and distortion spring is set, the external action
Power is further applied on distortion spring and generates deformation, and collision bead is driven to be applied on the shell of the vibration device and generate
The dither effect of single-frequency.
Preferably, the inductive mode described in above-mentioned steps S103 includes closing on strong vibration mode, wind and rain perturbation mode, bird
Class perturbation mode and dangerous intrusion model.
It is further preferred that further including metal conduction line in the vibration induction optical cable, know when by the step S103
When being clipped to dangerous invasion, high voltage low current signal can be applied by the vibration induction optical cable, which can pass through
The protection cable that conduction device reversely applies, to carry out protection against electric shock.
Due to being same design with perimeter security system above-mentioned, security monitor embodiment of the method provided by the invention may be used also
With with further reference to perimeter security system related content above-mentioned, which is not described herein again.
It can be seen that the invention discloses a kind of perimeter security system and security-protecting and monitoring methods.The system includes column, with
And the protection cable laterally laid on column, the conduction device that setting is connected with protection cable on column, conduction device and into
One step is connected with vibration device, and vibration device connects vibration induction optical cable, and vibration induction optical cable is connected to distribution type fiber-optic detection
Device.After stating protection cable by external force invasion generation deformation, the deformation effect of cable will be protected to be conducted to by conduction device
Vibration device and generate dither effect, vibration induction optical cable induction vibration effect, pass through distribution type fiber-optic detector detection determine
External force invades and harasses information.The system can to the detection of vibration induction by the conversion and optical fiber of stress effect and dither effect
The problems such as high, the detection inaccuracy of circumference security protection construction maintenance cost are effectively solved, and this system belongs to passive monitoring system, tool
Standby anti-electromagnetic interference capability.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure transformation made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant technical fields,
Similarly it is included within the scope of the present invention.
Claims (10)
1. a kind of perimeter security system is included in the spaced column of circumference, and laterally lays on the column anti-
Protect cable, which is characterized in that the conduction device being connected with protection cable is set on the column, and the conduction device is further
It is connected with vibration device, the vibration device connects vibration induction optical cable, and the vibration induction optical cable is connected to distribution type fiber-optic
Detector；
It, will by the conduction device on the column that closes on after the protection cable is invaded and harassed by external force generates deformation
The deformation effect of the protection cable is conducted to the vibration device and generates dither effect, and the vibration induction optical cable incudes institute
The dither effect of vibration device is stated, and determines that the protection cable is invaded by external force by distribution type fiber-optic detector detection
The information disturbed.
2. perimeter security system according to claim 1, which is characterized in that the conduction device includes connecting the protection
First limit pull ring of cable, and the conduction cable being connect with the first limit pull ring, the other end of the conduction cable
Connect the vibration device.
3. perimeter security system according to claim 2, which is characterized in that the conduction cable is built in spool.
4. perimeter security system according to claim 2 or 3, which is characterized in that the vibration device includes shell and interior
It is placed in the deformation spring of the enclosure interior, one end of the deformation spring is provided with the second limit pull ring, second limit
Pull ring connects the conduction cable, is provided with moveable collision bead on the deformation spring；The vibration induction optical cable with it is described
The shell of vibration device is in close contact；
Cause the deformation spring by the second limit pull ring when the conduction cable telescopic variation deformation occurs, in turn
The inner wall for driving the collision bead to generate displacement and hitting the shell generates the dither effect, and by the vibration induction optical cable
Induction.
5. perimeter security system according to claim 4, which is characterized in that only transmission comes in the vibration induction optical cable
The laser generated from the distribution type fiber-optic detector, the distribution type fiber-optic detector also receive the back scattering of the laser
Light, and the position of the vibration induction optical cable induction vibration is calculated accordingly.
6. perimeter security system according to claim 5, which is characterized in that the distribution type fiber-optic detector includes narrow arteries and veins
Wide laser, the laser that the narrow spaces laser issues are input to the vibration induction optical cable by the second port of circulator
In, and photoelectricity then is output to from the third port of the circulator from the reflected back-scattering light of vibration induction optical cable
Detector carries out photoelectric conversion by the photodetector, outputs electrical signals in signal acquisition process device and calculated.
7. perimeter security system according to claim 6, which is characterized in that the outer layer covers of the vibration induction optical cable have
Metal skin.
8. a kind of circumference security monitor method is based on perimeter security system described in claim 1, which is characterized in that including step
It is rapid:
External force and conduction set up column in circumference, and on column laterally lay protection cable, when protection cable by
Strain is generated after applied external force, then the strain effect is conducted to by vibration device by conduction device；
Vibration conversion and induction, the strain effect is converted to dither effect by the vibration device, then by vibration induction light
Cable incudes the dither effect, then the dither effect is transferred to distribution type fiber-optic detector by the optical signal in optical cable；
Monitoring identification, distribution type fiber-optic detector test and analyze received optical signal, establish inductive mode, and identify true
The information that the fixed protection cable is invaded and harassed by external force.
9. circumference security monitor method according to claim 8, which is characterized in that in the external force and conduction step,
Including the setting conduction cable on conduction device, protection cable and the rate of tension for conducting cable are regulated and controled, thus adjustment pair
The sensitivity of applied external force induction.
10. according to circumference security monitor method described in right 9, which is characterized in that in vibration conversion and sensing step,
It is included in the vibration device and distortion spring is set, the applied external force is further applied on distortion spring and generates shape
Become, and collision bead is driven to be applied to the dither effect on the shell of the vibration device and generating single-frequency.
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| CN110084986A (en) * | 2019-04-29 | 2019-08-02 | 西人马（厦门）科技有限公司 | A kind of circumference safety protection method and device |
| CN110989026A (en) * | 2019-11-16 | 2020-04-10 | 南京派光智慧感知信息技术有限公司 | Safety monitoring method for cross-railway bridge |
| CN112595446A (en) * | 2021-03-02 | 2021-04-02 | 南京派光智慧感知信息技术有限公司 | Stress detection protective fence |
| CN112785815A (en) * | 2021-01-27 | 2021-05-11 | 哈尔滨工业大学 | Surge monitoring device and method based on distributed optical fiber sensing technology |
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