CN1016098B - Security fence matching optical fibre alarm system with optical fiber warning system adapted - Google Patents
Security fence matching optical fibre alarm system with optical fiber warning system adaptedInfo
- Publication number
- CN1016098B CN1016098B CN 87103772 CN87103772A CN1016098B CN 1016098 B CN1016098 B CN 1016098B CN 87103772 CN87103772 CN 87103772 CN 87103772 A CN87103772 A CN 87103772A CN 1016098 B CN1016098 B CN 1016098B
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- Prior art keywords
- alarm system
- optical fibre
- security fence
- order
- optical fiber
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Abstract
A kind of security fence matching optical fibre alarm system of and optical fiber warning system adapted, comprise device by-optical signal transmission fiber, according to the change in optical signal that senses detect in this optical fiber, whether bend and the device of crooked place approximate location, with a kind of fence structure a plurality of rigid rod members that arrange and that be associated with described optical fiber and in order to response at least some described rigid rod member at least-bending of specified rate and provide predefined curved device to described optical fiber.
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 sensing function.
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 be sensed goes out.
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 articles for use 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 security fence matching optical fibre alarm system 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, has at least one to comprise in order to the bending of at least one specified rate of response rigid rod member and provide predefined curved device to optical fiber 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 the device by this fiber device transmitting optical signal, and detect according to the decay that in transmitting optical signal, is sensed, phase change, signal reflex, polarization, wavelength variations or above-mentioned any combination and in fiber device, whether to bend and the device of crooked position.
In addition, according to a preferred embodiment of the present invention, when being provided, predefined curved device work provides the micro bending of optical fiber.
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 Cheng Buhui response rigid rod in a specified rate scope bending and be 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 setting element placed in the middle move with respect at least the first and second setting elements, but produces the bending of the optical fiber of sensing.
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 the security fence matching optical fibre alarm system of Fig. 1 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.
Referring 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 barrier layer of conventional version, 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 by description of drawings as shown in Figure 2 in series passes many adjacent bars 12 up and down with an optical fiber 14.Select as another kind, can use any other ideal structure of optical fiber 14.
A kind of signal transmitting and receiving news machine 18, for example a kind of TEK fiber optics TDR optical 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 machine for receiving and emitting message in, for example portable frequency spectrum analyser 490 series of TEK are also provided by Tektronix factory.Whether that kind equipment can exist and approximate location and overall attenuation, phase change and signal reflex or above-mentioned any or multiple output indication in order to provide about fibre-optical bending.
The output signal of machine for receiving and emitting message 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 machine for receiving and emitting message 18.The output signal of machine for receiving and emitting message 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, they illustrate the bending of a response bar 12 and 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, porose 28 on the retaining element 26, 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 the inside surface circumferential abutment with 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, and usually, when bar 12 not by bending the time, the 28 pairs of normal incidences in hole 32 and hole arrange, so that optical fiber 14 is usually by the extension of linearity ground and pass wherein, as shown in Fig. 3 A.
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.
Bending (Fig. 3 A and 3B have illustrated one of them example) by the optical fiber 14 that bending apparatus produced, sense by receiver 18, frequency spectrum analyser 20 and circuit for alarming 22, thereby provide about the existence of the bending that measures and an alarm indication of approximate location.
According to a preferred embodiment of the present invention, optical fiber 14 is directly coupled on the machine for receiving and emitting message 18.Thereby be appreciated that the existing detection of single fiber has the effectiveness of 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 (14)
1, a kind of security fence matching optical fibre alarm system of and optical fiber warning system adapted, this warning system comprises optical fiber, the device by this optical signal transmission fiber and detects according to the change in optical signal that is sensed whether bend and the device of crooked place approximate location in described optical fiber, it is characterized in that described security fence matching optical fibre alarm system also comprises:
With a kind of fence structure a plurality of rigid rod members that arrange and that be associated with described optical fiber; And
In order to the response at least at least one specified rate of some described rigid rod member bending and provide predefined curved device to described optical fiber.
2, security fence matching optical fibre alarm system according to claim 1 is characterized in that: the micro bending that optical fiber wherein is provided when predefined curved device work to be provided.
3, security fence matching optical fibre alarm system according to claim 1 is characterized in that, wherein in order to provide predefined curved described device to comprise:
At least the first and second fiber orientation elements support above-mentioned optical fiber and are positioned in the described rigid rod member, described setting element be arranged to can not to respond described rigid rod member in a specified rate scope bending and be moved;
At least one fiber orientation element placed in the middle, be configured in the centre of at least the first and second fiber orientation elements, and be arranged to respond the bending of described rigid rod member and move, thereby the bending of described rigid rod member makes at least one setting element placed in the middle move with respect at least the first and second setting elements, but produces the bending of the optical fiber of sensing.
4, security fence matching optical fibre alarm system according to claim 3, 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 described rigid rod member in a specified rate scope bending and be moved.
5, security fence matching optical fibre alarm system according to claim 1 is characterized in that: wherein said in order to transmission and can in OTDR equipment, implement in order to the device that detects.
6, security personnel's security fence matching optical fibre alarm system according to claim 1 is characterized in that, wherein said in order to the transmission device and the device that is used for detecting can implement at frequency spectrum analyser equipment.
7, security fence matching optical fibre alarm system according to claim 1 is characterized in that, wherein said device in order to detection comprises the decay pick-up unit.
8, security fence matching optical fibre alarm system according to claim 1 is characterized in that, wherein said device in order to detection comprises the phase change pick-up unit.
9, security fence matching optical fibre alarm system according to claim 1 is characterized in that, wherein said device in order to detection comprises the signal reflex pick-up unit.
10, security fence matching optical fibre alarm system according to claim 1 is characterized in that, wherein said device in order to detection comprises the wavelength variations pick-up unit.
11, security fence matching optical fibre alarm system according to claim 1 is characterized in that, wherein said device in order to detection comprises device for testing polarization.
12, security fence matching optical fibre alarm system according to claim 1 is characterized in that, wherein said optical fiber is directly coupled on the machine for receiving and emitting message.
13, security fence matching optical fibre alarm system according to claim 1 is characterized in that, wherein said device in order to detection provides the output indication about the existence of going into to rush incident and approximate location effectively.
14, security fence matching optical fibre alarm system according to claim 1 is characterized in that, the wherein said device of by the variation of the simulation bending parameters of the unit interval that pick-up unit sensed the alarm indication being classified in order to basis that comprises 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 CN87103772A (en) | 1988-12-07 |
| CN1016098B true 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) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2930843A1 (en) * | 2008-05-05 | 2009-11-06 | Dirickx Groupe Sa | Attempt of intrusion detecting system for detecting presence of unauthorized person near perimeter of fence at site, has transmission units transmitting data from detection units to remote station, where detection units are carried by posts |
| FR2943446B1 (en) * | 2009-03-19 | 2016-07-01 | Prosede | GRID WITH DETECTION OF THE SECTION |
| 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 |
| WO2012047117A1 (en) * | 2010-10-08 | 2012-04-12 | Gallagher Group Limited | 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
Also Published As
| Publication number | Publication date |
|---|---|
| CN87103772A (en) | 1988-12-07 |
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