CN102568134A - Pressure-sensitive type fiber sensing device for perimeter security protection - Google Patents
Pressure-sensitive type fiber sensing device for perimeter security protection Download PDFInfo
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- CN102568134A CN102568134A CN2010105746547A CN201010574654A CN102568134A CN 102568134 A CN102568134 A CN 102568134A CN 2010105746547 A CN2010105746547 A CN 2010105746547A CN 201010574654 A CN201010574654 A CN 201010574654A CN 102568134 A CN102568134 A CN 102568134A
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Abstract
The invention discloses a pressure-sensitive type fiber sensing device for perimeter security protection. The device comprises at least a fiber bending sensing element which is arranged under a pavement flat plate and is buried in a soil layer. Each fiber bending sensing element comprises a signal fiber. At least one end of an optical cable is connected with a test unit. The test unit is connected with a processing unit. The processing unit is connected with alarm equipment and a camera. The fiber bending sensing element comprises a guide rod and a housing which is in sliding fit with the guide rod. The guide rod is in contact connection with one end of a curved support. The other end of the curved support is fixed on an inner wall of the housing. When extraneous force generates displacement to the pavement flat plate, displacement of the pavement flat plate further enables bending curvature of the signal fiber to change, an optical signal transmitted in the signal fiber changes with the above change, the change of the optical signal can be monitored through the test unit and is transmitted to the processing unit, and the processing unit starts the alarm equipment and the camera. According to the device, an intrusion behavior of an intruder can be effectively monitored.
Description
Technical field
The present invention relates to a kind of sensing device, the pressure sensitive fibre-optical sensing device is used in particularly a kind of circumference security protection.
Background technology
Along with greatly developing of social security, various safety monitoring assembly equipment are also more and more.Outdoor perimeter intrusion detecting device is used for the monitoring of large tracts of land border, and a kind of coming into one's own is because this is that first road prevents the barrier of invading as a rule.
Circumference device for monitoring kind is more, but because problems affect such as price and use, maintenance cost, great majority are not popularized, and modal circumference monitoring is infrared correlation circumference monitoring system and video frequency monitoring system.The former price is low, cost performance is higher and it is widely-used to receive, but its shortcoming be to use the life-span short, receive that multiple environmental impact is big, wrong report is frequent; The latter has also obtained being widely used because of the function with field notes playback, but because the restriction of technical conditions can't be accomplished real-time monitoring, is main to review function afterwards, and effect and function that its prevention incident takes place have much room for improvement.That is to say that existing technology and equipment still can't satisfy actual security protection needs.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency of the prior art, provide a kind of circumference security protection to use the pressure sensitive fibre-optical sensing device.The present invention is simple in structure, reasonable in design, cost is low and use-pattern is flexible, highly sensitive, result of use is good, can effectively monitor effractor's the behavior of swarming into, and has wide market application prospect.
For realizing above-mentioned purpose; The technical scheme that the present invention adopts is: the pressure sensitive fibre-optical sensing device is used in the circumference security protection; It is characterized in that: comprise being arranged on below the pavement slab and imbedding at least one the fibre-optical bending sensitive element in the soil layer, include signal optical fibre in all fibre-optical bending sensitive elements, and when the fibre-optical bending sensitive element is two or more; Signal optical fibre in the fibre-optical bending sensitive element is cascaded through optical cable; At least one end of optical cable is connected with test cell, and said test cell is connected with processing unit, and said processing unit is connected with alarm and camera; Described fibre-optical bending sensitive element comprises a guide rod and the housing that is slidingly matched with guide rod; The bottom surface of guide rod one end and pavement slab is a contact matching; The guide rod other end stretches into enclosure interior and is connected with an end in contact of a curved bracket; The other end of curved bracket is fixed on the inwall of housing, is laid with a plurality of A sides distortion teeth and a plurality of B side distortion tooth in the inner relative both sides of described curved bracket, forms the shaped form passage that supplies one or more signal optical fibres to pass between interleaved laying and the head of the two between a plurality of A sides distortion teeth and a plurality of B side distortion tooth; A side distortion tooth and B side distortion tooth correspondence are laid in the signal optical fibre both sides; When extraneous power road pavement is dull and stereotyped when producing displacement, the displacement of said pavement slab further makes the signal optical fibre bending curvature change, and changes at the light signal of signal optical fibre internal transmission thereupon; Can monitor the variation of this light signal and pass to processing unit through test cell, said processing unit starts alarm and camera.
The pressure sensitive fibre-optical sensing device is used in above-mentioned circumference security protection, and described pavement slab is floor tile, plank, cement plate or slabstone.
The pressure sensitive fibre-optical sensing device is used in above-mentioned circumference security protection, and said curved bracket is the shaped form housing, and a plurality of A side distortion teeth and a plurality of B side distortion tooth correspondence are laid on the inwall of shaped form housing.
The pressure sensitive fibre-optical sensing device is used in above-mentioned circumference security protection, is provided with barrier film between described guide rod and the shaped form housing, and described barrier film is fixed on the inwall of housing.
The pressure sensitive fibre-optical sensing device is used in above-mentioned circumference security protection, and the input end that an end of said signal optical fibre is provided with light reflecting device and its other end and 1 * 2 optical branching device joins, and the output terminal of said 1 * 2 optical branching device and test cell join.
The pressure sensitive fibre-optical sensing device is used in above-mentioned circumference security protection, and said curved bracket is a spring, and A side distortion tooth and B side distortion tooth correspondence are laid in the spring between the adjacent two adjacent rings spring wire.
The pressure sensitive fibre-optical sensing device is used in above-mentioned circumference security protection, and said curved bracket is a corrugated tube, and A side distortion tooth and B side distortion tooth correspondence are laid on the two opposite side surfaces of interior recess on the tube wall of corrugated tube.
The pressure sensitive fibre-optical sensing device is used in above-mentioned circumference security protection, and said curved bracket is the serrate support, and the serrate support interlocks by two each and every one gullet plates and form, and the A side distortion tooth that is laid with interlaced correspondence on the opposite face of two gullet plates is out of shape tooth with the B side.
The present invention compared with prior art has the following advantages:
1, simple in structure, processing and fabricating is easy, input cost is low and use-pattern is flexible, highly sensitive.
2, test cell can adopt existing equipment such as light source-light power meter or optical time domain reflectometer just can come into operation, and adopts optical time domain reflectometer to accomplish distributed or quasi-distributed monitoring easily.
3, reach the raising measurement sensitivity and accomplish distributed or quasi-distributed monitoring through light reflecting device is installed on signal optical fibre and optical cable.
When 4, this device is set foot on flat board according to the invador; Its body weight is applied on the fibre-optical bending sensitive element as pressure detector on the dull and stereotyped bottom surface, thereby realizes the purpose of monitoring, alarming, and general adult's body weight is at least more than the 30-40 kilogram; This weight is applied to upward dull and stereotyped and other vibrations have tangible difference; Thereby make this method error little, antijamming capability is strong, is easy to practicality.
5, measuring accuracy is high, install lay convenient, and anti-electromagnetic interference (EMI), the purpose that can accomplish remote monitoring.
6, owing to the fibre-optical bending sensitive element is embedded in the dull and stereotyped following supporter; Accomplished hidden monitoring on the one hand; Prevent hiding of effractor, strengthened the security of fibre-optical bending sensitive element in addition and made fibre-optical bending sensitive element surrounding environment relatively stable, prolonged its serviceable life.
In sum, the present invention is simple in structure, reasonable in design, processing and fabricating is convenient, cost is low and use-pattern is flexible, highly sensitive, result of use good, practical value is high, can effectively monitor effractor's position, has wide market application prospect.
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1.
Fig. 2 is a fibre-optical bending sensitive element structure synoptic diagram in the embodiment of the invention 1.
Fig. 3 is the inner structure synoptic diagram of shaped form housing in the embodiment of the invention 1.
Fig. 4 is the structural representation of the embodiment of the invention 2.
Fig. 5 is the inner structure synoptic diagram of spring of the present invention.
Fig. 6 is the structural representation of the embodiment of the invention 3.
Fig. 7 is the local enlarged diagram at A place among Fig. 6.
Fig. 8 is the structural representation of the embodiment of the invention 4.
Description of reference numerals:
The 1-optical cable; The 2-soil layer; The 3-pavement slab;
4-1-A side distortion tooth; 4-2-B side distortion tooth; The 5-test cell;
The 7-processing unit; The 8-guide rod; The 9-housing;
The 10-barrier film; The 15-fixed support; 16-adjusts screw rod;
The 17-base plate; 19-shaped form housing; The 20-plain cushion;
The 21-auxiliary spring; The 22-alarm; The 23-camera;
The 33-signal optical fibre; 45-serrate support; The 38-spring;
The 40-corrugated tube; The 41-tube wall.
Embodiment
Use the pressure sensitive fibre-optical sensing device like Fig. 1, Fig. 2 and a kind of circumference security protection shown in Figure 3; Comprise and be arranged on below the pavement slab 3 and imbed at least one the fibre-optical bending sensitive element in the soil layer 2; Include signal optical fibre 33 in all fibre-optical bending sensitive elements; And when the fibre-optical bending sensitive element was two or more, the signal optical fibre 33 in the fibre-optical bending sensitive element was cascaded through optical cable 1, and at least one end of optical cable 1 is connected with test cell 5; Said test cell 5 is connected with processing unit 7, and said processing unit 7 is connected with alarm 22 and camera 23; Said fibre-optical bending sensitive element comprises a guide rod 8 and the housing 9 that is slidingly matched with guide rod 8; The bottom surface of guide rod 8 one ends and pavement slab 3 is contact matching; Guide rod 8 other ends stretch into housing 9 inside and are connected with an end in contact of a curved bracket; The other end of curved bracket is fixed on the inwall of housing 9; Be laid with a plurality of A side distortion tooth 4-1 and a plurality of B side distortion tooth 4-2 in the inner both sides relatively of described curved bracket; Form the shaped form passage that supplies one or more signal optical fibres 33 to pass between interleaved laying and the head of the two between a plurality of A side distortion tooth 4-1 and a plurality of B side distortion tooth 4-2, A side distortion tooth 4-1 and B side distortion tooth 4-2 correspondence are laid in signal optical fibre 33 both sides, when extraneous power road pavement flat board 3 produces displacements; The displacement of said pavement slab 3 further makes signal optical fibre 33 bending curvatures change; Light signal in signal optical fibre 33 internal transmission changes thereupon, can monitor the variation of this light signal and pass to processing unit 7 through test cell 5, and said processing unit 7 starts alarm 22 and camera 23.
In the present embodiment, said curved bracket is a shaped form housing 19, and a plurality of A side distortion tooth 4-1 and a plurality of B side distortion tooth 4-2 correspondence are laid on the inwall of shaped form housing 19.The fibre-optical bending sensitive element is imbedded in the soil layer 2, in the real work, steps in 3 last times of pavement slab as the effractor; Its body weight is applied on the pavement slab 3; Make dull and stereotyped 3 downward micro displacement to occur, cause the displacement of guide rod 8, the shaped form housing 19 two ends distance that is positioned at housing 9 is changed; Thereby the distance between shaped form housing 19 inner two row A side distortion tooth 4-1 and the B side distortion tooth 4-2 is changed; Cause the bending curvature of signal optical fibre 33 to change, change thereupon, can monitor the variation of this light signal and pass to processing unit 7 through test cell 5 and judge and provide alarm at the light signal of signal optical fibre 33 internal transmission.Because adult body weight is generally at least more than 40kg,, make this device have better anti-jamming capability so it imposes on the acting force that acting force of dull and stereotyped 3 can obviously be different from other vibrations.
Described dull and stereotyped 3 can be floor tile, plank, cement plate and slabstone.The soil layer 2 that said fibre-optical bending sensitive element is imbedded also can be in sand ground or the cement as required.
A kind of preferred way is that a barrier film 10 is arranged between described guide rod 8 and the shaped form housing 19, and described barrier film 10 is fixed on the inwall of housing 9, can prevent the erosion to housing 9 inner curve shaped shell 19 of dust and rainwater like this.Also can be preset with ripple on the described barrier film 10.
The input end that also can be provided with light reflecting device and its other end and 1 * 2 optical branching device at an end of said signal optical fibre 33 joins, and the output terminal of said 1 * 2 optical branching device joins in test processes unit 5.
Said signal optical fibre 33 is the outside optical fiber that is surrounded by multi-protective layer.
Said signal optical fibre 33 external packets are covered with one deck waterproof layer.
A kind of preferred way is: be provided with the fixed support 15 that supplies said shaped form housing 19 bottoms to install in the said fibre-optical bending sensitive element; With thread connecting mode adjustment screw rod 16 is installed on the fixed support 15 and adjustment is fixed with base plate 17 on the screw rod 16; Top, said shaped form housing 19 upper ends is laid with between plain cushion 20 and plain cushion 20 and the barrier film 10 and is laid with auxiliary spring 21; And said shaped form housing 19 is installed between plain cushion 20 and the base plate 17, can carry out manual adjustment to the state of shaped form housing 19 like this.
A kind of preferred way is that signal optical fibre 33 two ends that the said shaped form housing 19 in the said fibre-optical bending sensitive element comprises are mounted with light reflecting device.Or on described optical cable 1, be mounted with one or more light reflecting devices; Because light reflecting device has reflex to the light signal of transmission in optical cable 1 and the signal optical fibre 33; Through measuring catoptrical signal power variations; Can better confirm the position that incident takes place, and the situation of incident.Described light reflecting device can be light reflection mirror, fiber grating or the optical fiber that contains bubble.
Like Fig. 4, shown in Figure 5; In the present embodiment; Different with embodiment 1 is: said curved bracket is a spring 38, and A side distortion tooth 4-1 and B side distortion tooth 4-2 correspondence are laid in the spring 38 between the adjacent two adjacent rings spring wire, and A side distortion tooth 4-1 is out of shape the interlaced laying of tooth 4-2 with the B side.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
Like Fig. 6, shown in Figure 7; In the present embodiment; Different with embodiment 1 is: said curved bracket is a corrugated tube 40; In A side distortion tooth 4-1 and B side distortion tooth 4-2 correspondence are laid on the tube wall 41 of corrugated tube 40 on the two opposite side surfaces of recess, and A side distortion tooth 4-1 and B side are out of shape the interlaced laying of tooth 4-2.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
Embodiment 4
As shown in Figure 8; In the present embodiment; Different with embodiment 1 is: said curved bracket is a serrate support 45, and serrate support 45 interlocks by two gullet plates and form, and the A side distortion tooth 4-1 that is laid with interlaced correspondence on the opposite face of two gullet plates is out of shape tooth 4-2 with the B side.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any restriction, every technical spirit all still belongs in the protection domain of technical scheme of the present invention any simple modification, change and equivalent structure transformation that above embodiment did according to the present invention.
Claims (8)
1. the pressure sensitive fibre-optical sensing device is used in the circumference security protection; It is characterized in that: comprise being arranged on below the pavement slab (3) and imbedding at least one the fibre-optical bending sensitive element in the soil layer (2); Include signal optical fibre (33) in all fibre-optical bending sensitive elements; And when the fibre-optical bending sensitive element was two or more, the signal optical fibre (33) in the fibre-optical bending sensitive element was cascaded through optical cable (1), and at least one end of optical cable (1) is connected with test cell (5); Said test cell (5) is connected with processing unit (7), and said processing unit (7) is connected with alarm (22) and camera (23); Described fibre-optical bending sensitive element comprises a guide rod (8) and the housing (9) that is slidingly matched with guide rod (8); The bottom surface of guide rod (8) one ends and pavement slab (3) is a contact matching; Guide rod (8) other end stretches into housing (9) inside and is connected with an end in contact of a curved bracket; The other end of curved bracket is fixed on the inwall of housing (9); Be laid with a plurality of A side distortion teeth (4-1) and a plurality of B side distortion tooth (4-2) in the inner both sides relatively of described curved bracket; Form the shaped form passage that supplies one or more signal optical fibres (33) to pass between interleaved laying and the head of the two between a plurality of A side distortion teeth (4-1) and a plurality of B side distortion tooth (4-2), A side distortion tooth (4-1) and B side distortion tooth (4-2) correspondence are laid in signal optical fibre (33) both sides, when extraneous power road pavement flat board (3) produces displacement; The displacement of said pavement slab (3) further makes signal optical fibre (33) bending curvature change; Light signal in signal optical fibre (33) internal transmission changes thereupon, can monitor the variation of this light signal and pass to processing unit (7) through test cell (5), and said processing unit (7) starts alarm (22) and camera (23).
2. the pressure sensitive fibre-optical sensing device is used in circumference security protection according to claim 1, it is characterized in that: described pavement slab (3) is floor tile, plank, cement plate or slabstone.
3. the pressure sensitive fibre-optical sensing device is used in circumference security protection according to claim 1 and 2; It is characterized in that: said curved bracket is shaped form housing (19), and a plurality of A side distortion teeth (4-1) and a plurality of B side distortion tooth (4-2) correspondence are laid on the inwall of shaped form housing (19).
4. the pressure sensitive fibre-optical sensing device is used in circumference security protection according to claim 3, it is characterized in that: be provided with barrier film (10) between described guide rod (8) and the shaped form housing (19), described barrier film (10) is fixed on the inwall of housing (9).
5. the pressure sensitive fibre-optical sensing device is used in circumference security protection according to claim 1; It is characterized in that: the input end that an end of said signal optical fibre (33) is provided with light reflecting device and its other end and 1 * 2 optical branching device joins, and the output terminal of said 1 * 2 optical branching device and test cell (5) join.
6. the pressure sensitive fibre-optical sensing device is used in circumference security protection according to claim 1; It is characterized in that: said curved bracket is spring (38), and A side distortion tooth (4-1) and B side are out of shape tooth (4-2) correspondence and are laid in the spring (38) between the adjacent two adjacent rings spring wire.
7. the pressure sensitive fibre-optical sensing device is used in circumference security protection according to claim 1; It is characterized in that: said curved bracket is corrugated tube (40), and A side distortion tooth (4-1) and B side distortion tooth (4-2) correspondence are laid in the tube wall (41) of corrugated tube (40) and go up on the two opposite side surfaces of interior recess.
8. the pressure sensitive fibre-optical sensing device is used in circumference security protection according to claim 1; It is characterized in that: said curved bracket is serrate support (45); And serrate support (45) is interlocked by two each and every one gullet plates and forms, and is laid with the A side distortion tooth (4-1) and the B side distortion tooth (4-2) of interlaced correspondence on the opposite face of two gullet plates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105746547A CN102568134A (en) | 2011-01-03 | 2011-01-03 | Pressure-sensitive type fiber sensing device for perimeter security protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105746547A CN102568134A (en) | 2011-01-03 | 2011-01-03 | Pressure-sensitive type fiber sensing device for perimeter security protection |
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| CN102568134A true CN102568134A (en) | 2012-07-11 |
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| CN2010105746547A Pending CN102568134A (en) | 2011-01-03 | 2011-01-03 | Pressure-sensitive type fiber sensing device for perimeter security protection |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104234506A (en) * | 2014-09-18 | 2014-12-24 | 张家港固耐特围栏系统有限公司 | Limiting clip for pressure alarm device |
| CN105509778A (en) * | 2015-12-24 | 2016-04-20 | 浙江中电智能科技有限公司 | Remote optical fiber door cover switch monitoring system |
| CN104240421B (en) * | 2014-09-18 | 2017-03-15 | 张家港固耐特围栏系统有限公司 | A kind of trigger-type pressure warning unit |
| CN109688878A (en) * | 2016-08-03 | 2019-04-26 | 奥特冷机系统有限公司 | Refrigerate furniture |
| CN110829149A (en) * | 2019-10-25 | 2020-02-21 | 南京聚联输变电安装有限责任公司 | Improved coaxial cable joint live-line installation process |
| CN111060983A (en) * | 2019-12-02 | 2020-04-24 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Self-adaptive threshold value calculation method and system of vibration sensing system |
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2011
- 2011-01-03 CN CN2010105746547A patent/CN102568134A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234506A (en) * | 2014-09-18 | 2014-12-24 | 张家港固耐特围栏系统有限公司 | Limiting clip for pressure alarm device |
| CN104240421B (en) * | 2014-09-18 | 2017-03-15 | 张家港固耐特围栏系统有限公司 | A kind of trigger-type pressure warning unit |
| CN106781138A (en) * | 2014-09-18 | 2017-05-31 | 张家港固耐特围栏系统有限公司 | A kind of trigger-type pressure warning unit |
| CN106781138B (en) * | 2014-09-18 | 2019-09-27 | 张家港固耐特围栏系统有限公司 | A kind of trigger-type pressure warning unit |
| CN105509778A (en) * | 2015-12-24 | 2016-04-20 | 浙江中电智能科技有限公司 | Remote optical fiber door cover switch monitoring system |
| CN109688878A (en) * | 2016-08-03 | 2019-04-26 | 奥特冷机系统有限公司 | Refrigerate furniture |
| CN109688878B (en) * | 2016-08-03 | 2021-09-07 | 奥特冷机系统有限公司 | Refrigerated furniture |
| CN110829149A (en) * | 2019-10-25 | 2020-02-21 | 南京聚联输变电安装有限责任公司 | Improved coaxial cable joint live-line installation process |
| CN110829149B (en) * | 2019-10-25 | 2021-02-09 | 南京聚联输变电安装有限责任公司 | Improved coaxial cable joint live-line installation process |
| CN111060983A (en) * | 2019-12-02 | 2020-04-24 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Self-adaptive threshold value calculation method and system of vibration sensing system |
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Application publication date: 20120711 |