CN203084869U - Long-distance high-sensitivity linear temperature-sensitive fire detector - Google Patents
Long-distance high-sensitivity linear temperature-sensitive fire detector Download PDFInfo
- Publication number
- CN203084869U CN203084869U CN 201220727013 CN201220727013U CN203084869U CN 203084869 U CN203084869 U CN 203084869U CN 201220727013 CN201220727013 CN 201220727013 CN 201220727013 U CN201220727013 U CN 201220727013U CN 203084869 U CN203084869 U CN 203084869U
- Authority
- CN
- China
- Prior art keywords
- responsive
- temperature
- light
- signal processing
- treatment channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to a long-distance high-sensitivity linear temperature-sensitive fire detector which comprises a temperature sensitive unit, a signal processing unit and a terminal, wherein the signal processing unit is composed of an electric signal processing channel and an optical signal processing channel, one ends of two metal conductors in the temperature sensitive unit are connected in parallel with a resistor in the terminal, the other ends of the two metal conductors are connected with the electric signal processing channel of the signal processing unit, the tail end of a fiber core of an optical fiber in the temperature sensitive unit is exposed in air, and a head end of the fiber core is connected with the optical signal processing channel through an optical fiber connector, thus implementing temperature abnormality alarm or fire alarm. With the long-distance high-sensitivity linear temperature-sensitive fire detector adopted, flame fire with size smaller than 10cm can be responded, and 10-km long-distance regional temperature monitoring and protection can be realized.
Description
Technical field
The utility model belongs to safety engineering subject moderate heat calamity detection alarm technical field, and it is big and long apart from the high sensitivity line-type heat detector to relate to a kind of protection zone scope.
Background technology
The linear optical fiber heat fire detector that grew up in recent years, carry out information sensing and transmission with optical cable as sensitive element with communication, so can realize long apart from detection, survey length farthest and can reach 10Km at present, but because Stimulated Light device, the restriction of optical sensor device and high-speed signal acquisition device technology index, the minimum probe unit length of linear optical fiber heat fire detector is between 0.8m～3m, for the small size flame fire about the 10cm that is far smaller than probe unit length, basic not response, cause failing to report such fire, the engineering that has increased the linear optical fiber heat fire detector is used risk.
Owing to the existence of the problems referred to above, limited the range of application of linear optical fiber heat fire detector greatly, influenced the incipient fire responding ability of linear optical fiber heat fire detector.
The utility model content
At above-mentioned linear optical fiber heat fire detector small size flame fire is measured restricted problem, the objective of the invention is to overcome above-mentioned weak point, provide a kind of length of 10cm small size flame warning that can realize apart from the high sensitivity line-type heat detector.
For realizing purpose of the present invention, take following technical scheme:
A kind of length is characterized in that apart from the high sensitivity line-type heat detector: comprise responsive to temperature unit, signal processing unit and terminal, signal processing unit is made up of electric signal treatment channel and light signal treatment channel; Wherein, the interior resistance of an end of two metallic conductors and terminal is connected in parallel in the responsive to temperature unit, and the other end is connected with the electric signal treatment channel of signal processing unit; The fibre core end of responsive to temperature unit inner fiber connects sky, and the head end fibre core is connected with the light signal treatment channel of signal processing unit by fibre-optical splice, realizes temperature anomaly warning or fire alarm.
Described light signal treatment channel is made up of synchronization control circuit, pulsed laser, optical fiber bidirectional coupler, optical splitter, two-way APD receiver and two paths of signals amplifier; Described electric signal treatment channel is made up of front end circuit, filtering circuit and amplifying circuit; The electric signal of the electric signal of light signal treatment channel output and the output of electric signal treatment channel connects the add up input end of card of data acquisition simultaneously, and electricity/light signal connects computing machine and controlled by it after data acquisition adds up card, the collection and the pre-service of two kinds of signals of realization.
The responsive to temperature unit is made of linear sensor, it comprises on fiber core, two metallic conductors, the conductor and applies barrier layer (3) and outer field insulating sheath (4), described barrier layer (3) adopts NTC or ptc characteristics material, the NTC characteristic is a negative temperature coefficient feature, and ptc characteristics is a ptc characteristics.
The length of described linear sensor setting is protection zone length, can reach 10km and can respond size less than 10cm flame.
The fiber core of responsive to temperature unit is provided with insulating sheath outward and constitutes a light cable separately; The parallel placement of certain spacing of being separated by of two metallic conductors, between two metallic conductors, barrier layer is set, insulating sheath is set outside it constitutes the independent electric wire cable of another root, two light/electricity cable separately adopt equidistant stranded mode to be provided with or the parallel mode of being close to is provided with.
The fiber core of responsive to temperature unit is provided with insulating sheath outward and constitutes a light cable separately; Two metallic conductors are provided with the barrier layer of NTC or ptc characteristics material outward in the electric wire cable, and two plain conductors adopt one to twine another and be provided with or adopt the stranded mode of equidistant spiral to twine setting, and its peripheral hardware insulating sheath constitutes another wire cable separately again.
The fiber core of responsive to temperature unit and two metallic conductors be the parallel placements of certain spacing at interval all, and the barrier layer of NTC or ptc characteristics material is set between fiber core and two metallic conductors, insulating sheath is set constitutes a light/wire type cable outward again.
Fiber core outer ring in the responsive to temperature unit is provided with the metallic conductor of tubulose, metallic conductor is also established the barrier layer of one deck NTC or ptc characteristics material outward, one deck tubular metal conductor is set again in the barrier layer outer ring, and outermost insulating sheath (4) constitutes a light/wire type cable.
Terminal is made up of terminal resistance.
Basis is novel compared with prior art to have the following advantages:
(1) adopt the binary channels measuring technique, apply NTC or PTC temperature-sensitive material in the responsive to temperature unit between two conductors, highly sensitive, can respond 10cm small size flame fire.
(2) adopt the laser sensing technology, detection range is long, and protection zone length can reach 10km, and has the real time temperature Presentation Function.
(3) responsive to temperature unit processing technology is simple, has improved the cost performance of detector, has enlarged the engineering range of application of line-type heat detector.
Description of drawings
Fig. 1 is this novel line-type heat detector one-piece construction block diagram;
Fig. 2 is that this novel line-type heat detector photo-signal channel constitutes block diagram;
Fig. 3 is that this novel line-type heat detector electrical signal paths constitutes block diagram;
Fig. 4 is the vertical sectional structure chart of Fig. 1 embodiment 1 line type temperature sensing unit;
Fig. 5 is the vertical sectional structure charts of Fig. 1 embodiment 2 line type temperature sensing units;
Fig. 6 is the vertical sectional structure charts of Fig. 1 embodiment 3 line type temperature sensing units;
Fig. 7 is the vertical sectional structure charts of Fig. 1 embodiment 4 line type temperature sensing units.
Embodiment
The utility model will be further described below in conjunction with drawings and Examples:
Embodiment 1:
As shown in Figure 1, be a kind of length apart from the high sensitivity line-type heat detector, it comprises responsive to temperature unit, signal processing unit and terminal, signal processing unit is made up of electric signal treatment channel and light signal treatment channel; Wherein, an end of two metallic conductors also connects with the interior resistance of terminal in the responsive to temperature unit, and the other end is connected with the electric signal treatment channel of signal processing unit; The fibre core end of responsive to temperature unit inner fiber connects sky, and the head end fibre core is connected with the light signal treatment channel of signal processing unit by fibre-optical splice, implements temperature anomaly and reports to the police or fire alarm; Described terminal is made up of terminal resistance.
Described light signal treatment channel is made up of synchronization control circuit, pulsed laser, optical fiber bidirectional coupler, optical splitter, two-way APD receiver and two paths of signals amplifier; Described electric signal treatment channel is made up of front end circuit, filtering circuit and amplifying circuit; The electric signal of the electric signal of light signal treatment channel output and the output of electric signal treatment channel connects the add up input end of card of data acquisition simultaneously, and electricity/light signal connects computing machine and controlled by it after data acquisition adds up card, the collection and the pre-service of two kinds of signals of realization.
As shown in Figure 2, above-mentioned light signal treatment channel is further specified: pulsed laser sends the laser pulse of certain width, laser pulse enters optical fiber bidirectional coupler, the light signal one tunnel of bidirectional coupler output enters in the optical fiber in the responsive to temperature unit, and stokes light is told and anti-Stokes draws light through optical splitter in another road; Two ways of optical signals inputs to two-way APD photelectric receiver respectively and is converted to electric signal, electric signal exports the two paths of signals amplifier to, the signal amplifier output end signal is delivered to the data acquisition card that adds up, the computer control signal collection adds up card to the electric signal progressive mean after amplifying, and is stored in the database then.Data processing and software for display are then handled the data that collect, and obtain the space distribution of temperature at last and can realize real-time graph or the form demonstration.
The responsive to temperature unit is made of linear sensor, it comprises coating barrier layer 3 on fiber core 1, two metallic conductors 2, the conductor, this barrier layer 3 adopts NTC or ptc characteristics material, and the NTC characteristic is that negative temperature coefficient feature or ptc characteristics are ptc characteristics and outer field insulating sheath 4.
The length of described linear sensor setting is protection zone length, can reach 10km and can respond size less than 10cm flame.
As shown in Figure 3, two metallic conductors that are coated with NTC or ptc characteristics material are terminal in parallel with terminal resistance, the front end of responsive to temperature unit connects front end circuit, front end circuit is converted into voltage signal with the impedance variation between two metallic conductors, signal through front end circuit and filtering circuit output is delivered to signal amplification circuit, the signal amplification circuit output signal inputs to the add up input end of card of data acquisition again, the computer control data acquisition adds up and sticks into capable signals collecting and pre-service, through by specific algorithm, judge whether to take place small size burning things which may cause a fire disaster fire and implement alarm indication on computers then.
The concrete principle of work of linear optical fiber heat fire detector:
The laser that pulsed laser sends is by transmitting in the optical fiber, because the Ramam effect of optical fiber, produce temperature-resistant Si Tuosike light and thermally sensitive anti-Si Tuosike light, through bidirectional coupler and optical splitter, deliver to two-way APD photelectric receiver respectively, behind signal amplification circuit, input to the data acquisition card that adds up, carry out data acquisition and pre-service by computing machine, by specific data processing algorithm, obtain each section of 10Km optical fiber temperature information, the computer temperature information storage utilizes software for display that temperature information is carried out real-time update and demonstration in database, indication abnormal temperature position.When 10cm small size flame fire takes place when, the output signal of light signal treatment channel does not change substantially, but be coated with the impedance meeting generation acute variation between two metallic conductors of NTC or ptc characteristics material, the impedance that changes is after front end circuit carries out signal extraction, inputs to filtering circuit and amplifying circuit, add up by the computer control data acquisition and to stick into capable signals collecting and pre-service, through by specific algorithm, judge whether to take place small size burning things which may cause a fire disaster fire and implement alarm indication on computers then.
Shown in Fig. 4～7, this novel responsive to temperature unit is suitable for the linear sensor of different types of structure, and every kind of linear sensor includes barrier layer 3 and the water-proof jacket 4 that applies NTC or ptc characteristics material between fiber core 1, two metallic conductors 2 and two conductors.The structure of linear sensor comprises as follows:
The responsive to temperature unit is made of linear sensor in embodiment 1, and it forms a light cable separately by the fiber core 1 outer insulating sheath 4 that is provided with; Electric signal electric wire cable also is set, its internal layer establish two metallic conductors 2 and between the be separated by parallel placement of certain spacing, two metallic conductor 2 outer barrier layer 3, outermost layers that are provided with NTC or ptc characteristics material be that 4, two independent cables of insulating sheath adopt equidistant stranded mode to be provided with or the parallel mode of being close to is provided with as shown in Figure 4 (for the vertical structure cut-open view of embodiment 1 responsive to temperature unit).
Embodiment 2: the responsive to temperature unit is made of linear sensor, it forms a light cable separately by the fiber core 1 outer insulating sheath 4 that is provided with, the electric signal cable is set on it, adopt another mode of winding to be provided with in 3, two plain conductors 2 of barrier layer of its interior two metallic conductors, 2 external application NTC or ptc characteristics material or adopt the stranded mode of equidistant spiral to twine the outer light cable of insulating sheath 4 compositions that is provided with in back is set.Two independent electricity/light cables can adopt equidistant stranded mode to be provided with or the parallel mode of being close to is provided with as shown in Figure 5 (for the partial sectional view of the vertical structure of embodiment 2 responsive to temperature unit).
Embodiment 3: the responsive to temperature unit is made of linear sensor, and it is by fiber core 1 and two metallic conductors 2 all are separated by the parallel placement of certain spacing, outer insulating sheath 4 backs that are provided with, barrier layer 3 back that NTC or ptc characteristics material be set between fiber core 1 and two metallic conductors 2 form a light/wire type cables (being the partial sectional view of the vertical structure of embodiment 3 responsive to temperature unit) as shown in Figure 6 up and down
Embodiment 4: the responsive to temperature unit is made of linear sensor, and tubular metal conductor 2, its outer ring that it is provided with by fiber core 1, its outer ring is provided with one deck tubular metal conductor 2 and outermost insulating sheath 4 again and forms a light/wire type cable (being the partial sectional view and the transversary cut-open view of the vertical structure of embodiment 4 responsive to temperature unit) as shown in Figure 7 by the barrier layer 3 of NTC or ptc characteristics material, in the outer ring of barrier layer 3.
Claims (8)
1. one kind long apart from the high sensitivity line-type heat detector, and it is characterized in that: comprise responsive to temperature unit, signal processing unit and terminal, signal processing unit is made up of electric signal treatment channel and light signal treatment channel; Wherein, the interior resistance of an end of two metallic conductors and terminal is connected in parallel in the responsive to temperature unit, and the other end is connected with the electric signal treatment channel of signal processing unit; The fibre core end of responsive to temperature unit inner fiber connects sky, and the head end fibre core is connected with the light signal treatment channel of signal processing unit by fibre-optical splice, realizes temperature anomaly warning or fire alarm.
2. press the described a kind of length of claim 1 apart from the high sensitivity line-type heat detector, it is characterized in that: described light signal treatment channel is made up of synchronization control circuit, pulsed laser, optical fiber bidirectional coupler, optical splitter, two-way APD receiver and two paths of signals amplifier; Described electric signal treatment channel is made up of front end circuit, filtering circuit and amplifying circuit; The electric signal of the electric signal of light signal treatment channel output and the output of electric signal treatment channel connects the add up input end of card of data acquisition simultaneously, and electricity/light signal connects computing machine and controlled by it after data acquisition adds up card, the collection and the pre-service of two kinds of signals of realization.
3. press the described a kind of length of claim 1 apart from the high sensitivity line-type heat detector, it is characterized in that: the responsive to temperature unit is made of linear sensor, it comprises and applies barrier layer (3) and outer field insulating sheath (4) on fiber core (1), two metallic conductors (2), the conductor, described barrier layer (3) adopts NTC or ptc characteristics material, the NTC characteristic is a negative temperature coefficient feature, and ptc characteristics is a ptc characteristics.
According to claim 1 or 3 described a kind of length apart from the high sensitivity line-type heat detector, it is characterized in that: the length of described linear sensor setting is protection zone length, can reach 10km and can respond size less than 10cm flame.
According to claim 1 or 3 described a kind of length apart from the high sensitivity line-type heat detector, it is characterized in that: the fiber core of responsive to temperature unit (1) is outer to be provided with insulating sheath (4) and to constitute a light cable separately; Two metallic conductors (2) parallel placement of certain spacing of being separated by, between two metallic conductors, barrier layer is set, insulating sheath (4) is set outside it constitutes the independent electric wire cable of another root, two light/electricity cable separately adopt equidistant stranded mode to be provided with or the parallel mode of being close to is provided with.
According to claim 1 or 3 described a kind of length apart from the high sensitivity line-type heat detector, it is characterized in that: the fiber core of responsive to temperature unit (1) is outer to be provided with insulating sheath (4) and to constitute a light cable separately; The outer barrier layer (3) that NTC or ptc characteristics material are set of two metallic conductors (2) in the electric wire cable, and two plain conductors (2) adopt one to twine another and be provided with or adopt the stranded mode of equidistant spiral to twine to be provided with and peripheral hardware insulating sheath (4) constitutes another wire cable.
According to claim 1 or 3 described a kind of length apart from the high sensitivity line-type heat detector, it is characterized in that: the fiber core of responsive to temperature unit (1) and two metallic conductors (2) are the parallel placement of certain spacing at interval all, the barrier layer (3) of NTC or ptc characteristics material is set between fiber core and two metallic conductors, and its outer insulating sheath (4) that is provided with constitutes a light/wire type cable again.
According to claim 1 or 3 described a kind of length apart from the high sensitivity line-type heat detector, it is characterized in that: the fiber core in the responsive to temperature unit (1) outer ring is provided with the metallic conductor (2) of tubulose, metallic conductor is also established the barrier layer (3) of one deck NTC or ptc characteristics material outward, in barrier layer (3) outer ring one deck tubular metal conductor (2) is set again, and outermost insulating sheath (4) constitutes a light/wire type cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220727013 CN203084869U (en) | 2012-12-26 | 2012-12-26 | Long-distance high-sensitivity linear temperature-sensitive fire detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220727013 CN203084869U (en) | 2012-12-26 | 2012-12-26 | Long-distance high-sensitivity linear temperature-sensitive fire detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203084869U true CN203084869U (en) | 2013-07-24 |
Family
ID=48830688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220727013 Expired - Lifetime CN203084869U (en) | 2012-12-26 | 2012-12-26 | Long-distance high-sensitivity linear temperature-sensitive fire detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203084869U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564230A (en) * | 2016-06-30 | 2018-01-09 | 沈阳壹智动智能网络科技有限公司 | High-rise fire detection device |
| CN111029008A (en) * | 2019-12-13 | 2020-04-17 | 南京华信藤仓光通信有限公司 | Fire early warning temperature sensing photoelectric composite cable |
-
2012
- 2012-12-26 CN CN 201220727013 patent/CN203084869U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564230A (en) * | 2016-06-30 | 2018-01-09 | 沈阳壹智动智能网络科技有限公司 | High-rise fire detection device |
| CN111029008A (en) * | 2019-12-13 | 2020-04-17 | 南京华信藤仓光通信有限公司 | Fire early warning temperature sensing photoelectric composite cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104101447B (en) | Distributed optical fiber temperature sensor and method for removing nonlinear error of same | |
| CN202221693U (en) | Fiber temperature measurement transformer | |
| CN103616091B (en) | A kind of distributed fiber optic temperature and stress sensing device | |
| CN102103173A (en) | Method and system for monitoring current-carrying capacity of cable based on distributed optical fiber temperature measuring method | |
| CN104142186B (en) | Remote fiber cable temperature detection alarm system | |
| CN203605976U (en) | Distributed type optical fiber temperature and stress sensing device | |
| CN205333222U (en) | Optic fibre wireless temperature on -line monitoring device for high tension switchgear | |
| CN104454007A (en) | Mine safety early warning system based on multi-fiber-core optical fibers | |
| CN106768475A (en) | The temperature-measuring control device and its method of novel battery and assembled battery | |
| CN104376678A (en) | Positioning type linear temperature sensing fire detector and alarm method thereof | |
| CN104376677A (en) | High-sensitivity composite linear heat fire detector and alarming method thereof | |
| CN203084869U (en) | Long-distance high-sensitivity linear temperature-sensitive fire detector | |
| CN205670054U (en) | A kind of optical fiber distributed type temperature measuring device for high-voltage cable | |
| CN201955411U (en) | Cable current carrying capacity monitoring system based on distributed optical fiber temperature measuring method | |
| CN202511922U (en) | Oppc optical cable stress and carrying capacity measuring and calculating system | |
| CN104614641A (en) | Quasi-distributed FBG conductor fault positioning system and method | |
| CN204331969U (en) | A kind of locate mode line-type heat detector | |
| CN103630266A (en) | Optical fiber temperature measurement host, optical fiber temperature measurement system and optical fiber temperature measurement method | |
| CN201036088Y (en) | High voltage cable with optical fiber | |
| CN203811294U (en) | Fiber-Raman cable-temperature monitoring and alarm system with attenuation self-compensating function | |
| CN206361806U (en) | A kind of multi-point temperature measurement control device | |
| CN105044561A (en) | On-line monitoring system of all-fiber high voltage cable | |
| CN201262774Y (en) | Linetype heat detector for multi-loop sectional monitoring temperature-sensing electrical signal | |
| CN202614411U (en) | Distributed-type optical fiber temperature measurement system | |
| CN204831356U (en) | Transmission line and shaft tower state monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 214028, No. four, No. 19-1, Wuxi New District, Jiangsu Patentee after: WUXI SHENGMIN SENSING TECHNOLOGY Co.,Ltd. Address before: 41-401 room 214028, Xinzhou garden, New District, Jiangsu, Wuxi Patentee before: Wuxi Shengmin Sensing Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |
|
| CX01 | Expiry of patent term |