CN87103772A - Security fence matching optical fibre alarm system - Google Patents
Security fence matching optical fibre alarm system Download PDFInfo
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- CN87103772A CN87103772A CN87103772.6A CN87103772A CN87103772A CN 87103772 A CN87103772 A CN 87103772A CN 87103772 A CN87103772 A CN 87103772A CN 87103772 A CN87103772 A CN 87103772A
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Abstract
A kind of security fence matching optical fibre alarm system comprises many rigid rod members of arranging with a kind of fence structure.At least in the rigid rod member comprises in order at least one specified rate bending of response rigid rod member provides a kind of optical fiber predefined curved device.
Description
In general, the present invention relates to security fence matching optical fibre alarm system, and more particularly relate to have security fence matching optical fibre alarm system into rushing the sensing ability.
Known to various types of security fence matching optical fibre alarm systems have in patent documentation, and can on market, buy.These comprise that use is installed in the taut wire fence system of the stretching wire on the movable sensor, thereby make attempt cut off or extend the alarm indication that this steel wire incident can produce the approximate location of going into to rush about attempt.
Also known have various security fence matching optical fibre alarm system that utilizes a kind of fiber optic sensitive device.A kind of security fence matching optical fibre alarm system structure that comprises the grid of being made up of the hollow tubular parts that passed by fiber optic cable has been described in the early stage disclosed patented claim of Britain for the 2nd, 098, No. 770.A kind of attempt that breaks through fence is broken or is out of shape owing to undue stretch-draw fiber makes fiber, thereby causes the phenomenon of the decay that the light signal generating by the optical cable transmission can go out by sensing.
The early stage disclosed patented claim the 2nd, 038,060 of Britain; 2,046,971 and 2,062, No. 321 and United States Patent (USP) the 4th, 292,628 and 4,399 are all pointed out the purposes of ensuring public security No. 430, wherein utilize fibre-optic fracture and an alarm indication is provided.The early stage publication application of Britain is pointed out a kind of security personnel's purposes 2,077, No. 471, wherein disposes a kind of pressure-sensitive fiber composite optical cable.
The present invention seeks to provide a kind of reliable safety fence by the parallel bar pattern, and this fence comprises and a kind ofly has into the optical fiber of rushing detectability.
Therefore a kind of security fence matching optical fibre alarm system that provides according to the preferred embodiment of the present invention, this fence comprises many rigid rod members of arranging with fence structure, and at least one comprises the predefined curved equipment that optical fiber is provided in order to the bending of at least one specified rate of response rigid rod member in the rigid rod member.
For the purpose of present patent application, " bending " comprises micro bending.
In addition, according to one embodiment of present invention, this security fence matching optical fibre alarm system comprises the fiber device that is configured in a plurality of rigid rod members, in order to equipment, reach device in order in fiber device, bend by detected decay in transmitting optical signal, phase change, signal reflex, polarization, wavelength variations or above-mentioned any combine detection existence and position by this fiber plant transmitting optical signal.
In addition, according to a preferred embodiment of the present invention, become to provide the micro bending of optical fiber in order to the device work that predetermined bending is provided.
And according to a preferred embodiment of the present invention, device in order to bending comprises at least the first and second fiber orientation elements that are installed in the rigid rod, these fiber orientation arrangements of elements become to make can not respond rigid rod in a set-point scope bending and these elements are moved.At least one fiber orientation element placed in the middle is configured in the centre of at least the first and second fiber orientation elements, and be arranged to respond the bending of rigid rod and move, thereby the bending of rigid rod makes at least one fiber orientation element placed in the middle move with respect at least the first and second fiber orientation elements, but produces the bending of the optical fiber that sensing goes out.
Will understand more fully and assess the present invention from the detailed description of doing below in conjunction with accompanying drawing, wherein:
Fig. 1 builds and the illustrating of the security fence matching optical fibre alarm system system of working according to a preferred embodiment of the present invention;
Fig. 2 is the explanation that a part of inner fiber of Fig. 1 security fence matching optical fibre alarm system is arranged; And
Fig. 3 A and 3B are respectively a pair of rigid rod and the explanation of amplifier section under nothing bending and crooked situation thereof.
With reference now to Fig. 1 and Fig. 2,, their explanations are built according to the preferred embodiment of the present invention and a kind of security fence matching optical fibre alarm system system of work.This security fence matching optical fibre alarm system generally comprises a kind of conventional version barrier layer, and the fence 10 of for example illustrated a kind of parallel bar pattern, barrier layer comprise the upright bar 12 at many common intervals.
According to a preferred embodiment of the present invention, bar 12 is to make with suitable thick steel, plastics or any other material, and these materials have needed xsect and all are hollow.The embodiment that illustrates with reference to the accompanying drawings in series passes many adjacent bars 12 up and down with an optical fiber 14 as shown in Figure 2.Select as another kind, can use any other ideal structure of optical fiber 14.
A kind of signal wireless electricity transceiver 18, for example a kind of TEK fiber optics TDR cable tester of being made by the Tektronix factory of Oregon, America Portland (TEK fiber optic TDR Cable tester) hereinafter is called " OTDR ", received an end of optical fiber 14, in order to providing, and receive signal from this fiber reflection by one of this optical fiber suitable light signal.Select as another kind, replace OTDR, can use a kind of frequency spectrum analyser with dress wireless set in, for example portable frequency spectrum analyser 490 series of TEK also provide from Tektronix factory.That kind equipment can be in order to provide about fibre-optical bending existence and approximate location and overall attenuation, phase change and signal reflex or above-mentioned any or multiple output indication.
The output signal of wireless set 18 can offer threshold value and signal processing circuit 20, in order to according to predetermined threshold value or other index, has automatically determined whether an alarm indication.Select as another kind, in order to realize an alarm indication, operating personnel can control wireless set 18.The output signal of wireless set and treatment circuit 20 can send alarm indicating circuit 22 to, and circuit 22 provides one about attempting to go into to rush the existence of incident and the suitable alarm output indication of approximate location.
Referring now to Fig. 3 A and 3B, the bending of a response bar 12 of they explanations is in order to provide crooked device to the light signal by optical fiber 14.Bar 12 most or all its inside dispose a kind of rigid support rod 24 with the relation of common parallel spaced apart, be arranged such that rod 24 can not respond bar 12 bending less than the bending of for example scheduled volumes of 25 degree.
Dispose a plurality of fiber orientation elements 26 that separate on the support stick 24 regularly, retaining element 26 is porose 28, hole 28 receiving optical fibers 14 and quite little lateral clearance is arranged.In general, setting element 26 separates along the length direction of the optical fiber spacing with a centimetre, and extends on the part or most of length of bar 12.
Each intermediate configurations to setting element 26 has an element 30 placed in the middle, and element 30 is configured to and is arranged to engage circumferentially with the inside surface of bar 12, so that bar 12 is by bending the time, element 30 is moved.Element 30 placed in the middle is made has an optic fibre patchhole 32, normally, promptly when bar 12 not by bending the time, the 28 pairs of normal incidences layouts in hole 32 and hole so that optical fiber 14 with a common linearity extend through wherein, as shown in Fig. 3 A.
Element 30 placed in the middle also disposes a macropore 34, and the loop backhaul of support stick 24 and optical fiber 14 partly extends through macropore 34.Hole 34 is arranged to like this, makes that promptly bar 12 is subjected under the crooked situation in needs go into to rush the preset range of detection, and support bar 24 does not contact element 30 placed in the middle, thereby does not limit moving of support bar.
Referring now to Fig. 3 B, when bar 12 by bending the time, element placed in the middle laterally moves with respect to the axis of optical fiber 14 as can be seen, and be installed on the support stick 24 setting element 26 not by bending, hole 28 and 32 no longer aligns and causes light transmitting fiber 14 bendings as a result.
Because the bending of the optical fiber 14 that bending apparatus produced, Fig. 3 A and 3B have illustrated one of them example, and this bending is by receiver 18, and frequency spectrum analyser 20 and circuit for alarming 22 detect so that the alarm indication with approximate location of existing about the bending that measures to be provided.
According to a preferred embodiment of the present invention, optical fiber 14 is directly coupled to wireless set 18.Thereby, be appreciated that into the effectiveness that the existing detection of single fiber has connection again.
Those skilled in the art can realize the present invention and be not limited to above the content of the special exhibition of addressing.For example, the device shown in Fig. 3 A and the 3B can be replaced by any other suitable crooked sensor.Scope of the present invention is just limited by subsequently claim.
Claims (15)
1, a kind of security fence matching optical fibre alarm system is characterized in that comprising:
A plurality of rigid rod members with a kind of fence structure layout;
With the relevant a kind of optical fiber of some described rigid rod member at least; And
In order to the response bending of at least one specified rate of some described rigid rod member at least, provide predefined curved device to described optical fiber.
2, equipment according to claim 1 is characterized in that also comprising:
In order to a kind of optical signal transmission is passed through the device of described optical fiber; And
In order to the variation of the light signal that goes out by sensing the device with approximate location of existing with the detection fiber bending.
3, any one the described equipment that requires according to aforesaid right is characterized in that: wherein in order to provide predefined curved device that the micro bending of optical fiber is provided effectively.
4, any one the described equipment that requires according to aforesaid right is characterized in that, wherein in order to provide predefined curved described device to comprise:
The above-mentioned optical fiber of at least the first and second fiber orientation member supports also is positioned in the described rigid rod, described setting element be arranged to can not to respond described rigid rod in a specified rate scope bending and be moved;
At least one fiber orientation arrangements of components placed in the middle and is arranged to respond the bending of rigid rod and moves in the middle of at least the first and second fiber orientation elements; Thereby the bending of rigid rod makes at least one setting element placed in the middle move with respect at least the first and second setting elements, but produces the fibre-optical bending that sensing goes out.
5, equipment according to claim 4, it is characterized in that: comprise a kind of support stick that supports described fiber orientation element in order to predefined curved device to be provided, described support stick be configured to can not to respond rigid rod in a specified rate scope bending and be moved.
6, any one described equipment that requires according to aforesaid right is characterized in that: wherein said in order to transmission and in OTDR equipment, implement in order to the device that detects.
7, any one described equipment that requires according to aforesaid right is characterized in that wherein saidly implementing at frequency spectrum analyser equipment in order to the device of transmission and the device that is used for detecting.
8, any one described equipment that requires according to aforesaid right is characterized in that wherein said device in order to detection comprises the decay pick-up unit.
9, any one described equipment that requires according to aforesaid right is characterized in that wherein said device in order to detection comprises the phase change pick-up unit.
10, any one described equipment that requires according to aforesaid right is characterized in that wherein said device in order to detection comprises the signal reflex pick-up unit.
11, any one described equipment that requires according to aforesaid right is characterized in that wherein said device in order to detection comprises the wavelength variations pick-up unit.
12, any one described equipment that requires according to aforesaid right is characterized in that wherein said device in order to detection comprises device for testing polarization.
13, any one the described equipment that requires according to aforesaid right is characterized in that wherein said optical fiber is directly coupled to above-mentioned wireless set.
14, any one described equipment that requires according to aforesaid right is characterized in that wherein saidly providing about the existence of going into to rush incident and the output indication of approximate location in order to the effective land used of device that detects.
15, any one described equipment that requires according to aforesaid right is characterized in that wherein saidly comprising in order to according to the variation of the simulation bending parameters of the unit interval that is gone out by pick-up unit institute sensing and with the device of alarm indication classification in order to the device that detects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87103772 CN1016098B (en) | 1987-05-20 | 1987-05-20 | Security fence matching optical fibre alarm system with optical fiber warning system adapted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87103772 CN1016098B (en) | 1987-05-20 | 1987-05-20 | Security fence matching optical fibre alarm system with optical fiber warning system adapted |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87103772A true CN87103772A (en) | 1988-12-07 |
| CN1016098B CN1016098B (en) | 1992-04-01 |
Family
ID=4814576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87103772 Expired CN1016098B (en) | 1987-05-20 | 1987-05-20 | Security fence matching optical fibre alarm system with optical fiber warning system adapted |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016098B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101577028A (en) * | 2008-05-05 | 2009-11-11 | 德瑞克斯集团公司 | Intrusion attempt detection system and intrusion attempt detection device |
| CN101839085A (en) * | 2009-03-19 | 2010-09-22 | 安全防御保护公司 | The fence of band cutting-off detection function |
| CN102345410A (en) * | 2010-08-03 | 2012-02-08 | 上海安瑞达建筑围栏系统有限公司 | Electronic safety alarming fence |
| CN103261550A (en) * | 2010-10-08 | 2013-08-21 | 盖拉格尔集团有限公司 | Improvements to fencing |
| CN109584489A (en) * | 2018-02-11 | 2019-04-05 | 乌鲁木齐智源易通智能科技有限公司 | Optic cable vibration detects prior-warning device and application method |
-
1987
- 1987-05-20 CN CN 87103772 patent/CN1016098B/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101577028A (en) * | 2008-05-05 | 2009-11-11 | 德瑞克斯集团公司 | Intrusion attempt detection system and intrusion attempt detection device |
| CN101839085A (en) * | 2009-03-19 | 2010-09-22 | 安全防御保护公司 | The fence of band cutting-off detection function |
| CN102345410A (en) * | 2010-08-03 | 2012-02-08 | 上海安瑞达建筑围栏系统有限公司 | Electronic safety alarming fence |
| CN103261550A (en) * | 2010-10-08 | 2013-08-21 | 盖拉格尔集团有限公司 | Improvements to fencing |
| CN109584489A (en) * | 2018-02-11 | 2019-04-05 | 乌鲁木齐智源易通智能科技有限公司 | Optic cable vibration detects prior-warning device and application method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1016098B (en) | 1992-04-01 |
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