CN103280057B - A kind of distributed air sampling smoke detection system - Google Patents
A kind of distributed air sampling smoke detection system Download PDFInfo
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- CN103280057B CN103280057B CN201310163651.8A CN201310163651A CN103280057B CN 103280057 B CN103280057 B CN 103280057B CN 201310163651 A CN201310163651 A CN 201310163651A CN 103280057 B CN103280057 B CN 103280057B
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- 238000001514 detection method Methods 0.000 title claims abstract description 63
- 238000005070 sampling Methods 0.000 title claims abstract description 56
- 239000000779 smoke Substances 0.000 title claims abstract description 40
- 230000000712 assembly Effects 0.000 claims abstract description 14
- 238000000429 assembly Methods 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000555268 Dendroides Species 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
A kind of distributed air sampling smoke detection system.It includes at least one system fan, main pipeline and some set of samples；System fan is connected to one end of main pipeline；Each set of samples is made up of with sampling tube, blast connection and the laser detector of thieff hatch single channel；Laser detector includes filter assemblies, laser detection room, laser assembly and control device.The system of the present invention is to be separated from main frame by the asepwirator pump of prior art, the distributed frame that formation air-breathing part and analytical sampling part work alone, and i.e. on-the-spot distribution arranges laser detector and system totally arranges system fan mode.So; can be according to the size of protected area; different space structures; laser detector is the most arbitrarily set; the response speed of fire alarm can not only be improved; and compared with the prior art, native system, without arranging complete air sampling smoke detection system one by one, therefore can reduce equipment investment expense.Native system design is more flexible various.
Description
Technical field
The present invention relates to a kind of air sampling smoke detection system, particularly relate to a kind of distributed air sampling smoke detection system.
Background technology
Currently for the large space area of fire protection that detection sensitivity requirement is higher, main employing air sampling smoke detection system (also referred to as air sampling formula pole incipient fire warning system or air suction type smoke detector system) detects.Fig. 1 is the air sampling smoke detection system structural representation of a kind of prior art.Fig. 2 is that the air sampling smoke detection system shown in Fig. 1 constitutes block diagram.As shown in Figure 1 and Figure 2, the air sampling smoke detection system of this prior art include multichannel with the sampling tube 1 of thieff hatch and the main frame 18 that is connected with these sampling tubes 1 by multiple blast connections 2, wherein main frame 18 includes fan case 3, asepwirator pump 4, filter assemblies 5, laser detection room 6, laser assembly 7, multiple is in charge of electric device 8 and control device 9；Asepwirator pump 4 is arranged in fan case 3, and it is connected with multi-channel sampling pipe 1 simultaneously, and its air vent is connected with filter assemblies 5 by pipeline；Filter assemblies 5 is arranged at the air inlet of laser detection room 6；Laser assembly 7 is arranged on the inside of laser detection room 6, is made up of generating laser and receptor；Multiple electric devices 8 of being in charge of are separately mounted to the inside of multiple blast connection 2, for the sampling tube 1 that opening and closing is corresponding；Control device 9 to be then arranged on fan case 3, and electrically connect with being in charge of electric device 8, laser assembly 7 and asepwirator pump 4.The work process of this air sampling smoke detection system is as follows: under the control controlling device 9; asepwirator pump 4 is diverse location extraction air from protected area simultaneously by the multi-channel sampling pipe 1 be made up of PVC or steel, and sends into laser detection room 6 after filter assemblies 5 filters out dust granule as sample.The laser beam that in laser assembly 7, generating laser sends is utilized to irradiate air sample in laser detection room 6, if air sample contains smoke particle, scattering will be produced when light beam is irradiated on these smoke particles, this some scattered light will be received by the receiver, this receptor sends control device 9 again to after the optical signal received is converted into the signal of telecommunication, the signal received is carried out analog digital conversion and is converted to smokescope value after treatment by the microprocessor finally controlled in device 9, then this smokescope value is compared with alarm threshold value set in advance；If above-mentioned detected value exceedes alarm threshold value set in advance, control device 9 and send fire alarm signal immediately.But, there is following point in the air sampling smoke detection system of this prior art: after laser assembly 7 detects smoke particle, control device 9 and must first confirm that out that flue gas is by which sampling tube 1 to be come in, then could send corresponding fire alarm signal exactly.Owing in national standard " GB15631-2008 ", the response time of regulation special type fire detector not can exceed that 120S, but in the detection of large space area of fire protection is designed and constructed, limited by asepwirator pump 4 watt level in air sampling smoke detection system, the greatest length of sampling tube 1 is usually no more than 100 meters, thus reduce sampled air and arrive the time of main frame 18 from sampling tube 1 end, typically require distribution at the scene in this case and multiple host 18 is set, with what this shortened sampling tube 1, length is set, the structure of whole fire detecting system thus can be made to become complicated, investment cost increases.
Summary of the invention
In order to solve the problems referred to above, it is an object of the invention to provide a kind of simple in construction, arrange flexibly, the distributed air sampling smoke detection system that response time is short.
In order to achieve the above object, the distributed air sampling smoke detection system that the present invention provides includes at least one system fan, main pipeline and is arranged on some set of samples of protected area diverse location；System fan is connected to one end of main pipeline；Each set of samples is made up of with sampling tube, blast connection and the laser detector of thieff hatch single channel；Wherein laser detector includes filter assemblies, laser detection room, laser assembly and control device；Sampling tube is connected with filter assemblies by blast connection；Filter assemblies is arranged at the air inlet of laser detection room；Main pipeline is connected with the gas outlet, laser detection room in some set of samples simultaneously；Laser assembly is arranged on the inside of laser detection room, is made up of generating laser and receptor；Control in the cabinet that device is then arranged in side, laser detection room.
Described control device includes microprocessor, power module, Laser Driven module, laser signal processing module and display module；Wherein:
Microprocessor is mainly made up of analog-digital converter, data processing unit and performance element, laser detection signal for receiving carries out analog digital conversion, and compare with default respective threshold, judge, output after treatment is given corresponding control, is driven or display module, and export corresponding alarm signal when breaking out of fire, fault, and by input equipment, the parameters such as air-flow, alert levels, laser transmitter projects frequency can be set；
Power module, is connected with microprocessor, and utilizing the outside input power provided is above-mentioned each module for power supply；
Laser Driven module, is connected with the generating laser in microprocessor and laser assembly, is used for driving laser transmitter projects laser beam；
Laser signal processing module, is connected with microprocessor and laser assembly, samples for the signal sending laser assembly, amplifies, and the signal after processing and amplifying and reference signal are compared, analyzed, is then transferred to microprocessor；
Display module, is connected with microprocessor, is used for showing air-flow, branch, smokescope, alarm condition and out of Memory.
The model of described microprocessor is LPC2131；The model of Laser Driven module is IC-WJB；The model of laser signal processing module is INA326, LM358, LT1112 or MC78L05CP；The model of display module is ZLG7290, SM420254, MAX1487 or B505.
Described system fan uses radial fan.
The distributed air sampling smoke detection system that the present invention provides is to be separated from main frame by the asepwirator pump of prior art, the distributed frame that formation air-breathing part and analytical sampling part work alone, i.e. on-the-spot distribution arranges laser detector and system totally arranges system fan mode.So; can be according to the size of protected area; different space structures; laser detector is the most arbitrarily set; the response speed of fire alarm can not only be improved; and compared with the prior art, native system is without arranging complete air sampling smoke detection system one by one, therefore, it is possible to reduce the investment cost of equipment.Additionally, native system design is more flexible various.
Accompanying drawing explanation
Fig. 1 is the air sampling smoke detection system structural representation of a kind of prior art.
Fig. 2 is that the air sampling smoke detection system shown in Fig. 1 constitutes block diagram.
Laser detector one example structure schematic diagram in the distributed air sampling smoke detection system that Fig. 3 provides for the present invention.
Fig. 4 is that in the distributed air sampling smoke detection system shown in Fig. 3, laser detector constitutes block diagram.
The distributed air sampling smoke detection system that Fig. 5 provides for the present invention based on Fig. 3 and Fig. 4 constitutes schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings and the specific embodiment distributed air sampling smoke detection system that provides the present invention is described in detail.The parts identical with prior art use identical drawing reference numeral, and omit the detailed description carrying out it.
As shown in Fig. 3, Fig. 4, Fig. 5, the distributed air sampling smoke detection system that the present invention provides includes at least one system fan 4 ', main pipeline 21 and is arranged on some set of samples of protected area diverse location；System fan 4 ' is connected to one end of main pipeline 21；Each set of samples is made up of with sampling tube 1, blast connection 2 and the laser detector 18 ' of thieff hatch single channel；Wherein laser detector 18 ' includes filter assemblies 5, laser detection room 6, laser assembly 7 and controls device 19；Sampling tube 1 is connected with filter assemblies 5 by blast connection 2；Filter assemblies 5 is arranged at the air inlet of laser detection room 6；Main pipeline 3 is connected with the gas outlet, laser detection room 6 in some set of samples simultaneously；Laser assembly 7 is arranged on the inside of laser detection room 6, is made up of generating laser and receptor；Control in the cabinet that device 19 is then arranged in side, laser detection room 6.
Described control device 19 includes microprocessor 11, power module 12, Laser Driven module 13, laser signal processing module 16 and display module 17；Wherein:
Microprocessor 11 is mainly made up of analog-digital converter, data processing unit and performance element, laser detection signal for receiving carries out analog digital conversion, and compare with default respective threshold, judge, output after treatment is given corresponding control, is driven or display module, and export corresponding alarm signal when breaking out of fire, fault, and by input equipment, the parameters such as air-flow, alert levels, laser transmitter projects frequency can be set；
Power module 12, is connected with microprocessor 11, and utilizing the outside input power provided is above-mentioned each module for power supply；
Laser Driven module 13, is connected with the generating laser in microprocessor 11 and laser assembly 7, is used for driving laser transmitter projects laser beam；
Laser signal processing module 16, is connected with microprocessor 11 and laser assembly 7, samples for the signal sending laser assembly 7, amplifies, and the signal after processing and amplifying and reference signal are compared, analyzed, is then transferred to microprocessor 11；
Display module 17, is connected with microprocessor 11, is used for showing air-flow, branch, smokescope, alarm condition and out of Memory.
The model of described microprocessor 11 is LPC2131；The model of Laser Driven module 13 is IC-WJB；The model of laser signal processing module 16 is INA326, LM358, LT1112 or MC78L05CP；The model of display module 17 is ZLG7290, SM420254, MAX1487 or B505.
The distributed air sampling smoke detection system operation principle that the present invention provides is as follows: under the control controlling device 19; system fan 4 ' continually by main pipeline 21 using the air of protected area diverse location as in the sampling tube 1 that sample suction is made up of PVC or steel; it is then passed through blast connection 2 inflow filter assembly 5; to filter out dust granule, send into laser detection room 6 afterwards.The laser beam that in laser assembly 7, generating laser sends is utilized to irradiate air sample in laser detection room 6, if containing smoke particle in air sample, scattering will be produced when light beam is irradiated on these smoke particles, this some scattered light will be received by the receiver, after the optical signal received is converted into the signal of telecommunication by this receptor and through amplifying, sending microprocessor 11 more again to.This analogue signal is converted to digital signal and is converted to smokescope value after treatment by microprocessor 11, and this smokescope value is compared with alarm threshold value set in advance；If above-mentioned detected value exceedes alarm threshold value set in advance, control device 19 and send fire alarm immediately, and warning message is shown on display module 17.The sampled air of protected area can be detected by the most distributed laser detector 18 ' being arranged on each scene on the spot in real time; significantly shorten due to sampling tube 1 pipeline is oversize and that the cause long problem of response time; and then the region of breaking out of fire can be detected soon, therefore can improve the sensitivity of fire alarm.Additionally, owing to being not provided with asepwirator pump 4 and fan case 3 in laser detector 18 ', only remaining Smoke Detection part, therefore laser detector 18 ' meeting is small-sized or is miniaturized or point type, not only system flexible design, simple, and reduce the cost of investment of fire detecting system.
It addition, for enabling a system to reliability service, described system fan 4 ' can arrange two, a master one is standby；Or arranging three, two masters one are standby；Additionally, the power of system fan 4 ' can determine according to the quantity of the laser detector 18 ' of site setup, the greatest length of sampling tube 1, the length of main pipeline 21, the factor such as quantity of set of samples.Described system fan 4 ' uses radial fan.
The distributed air sampling smoke detection system that the present invention provides can be established one's own system, it is also possible to is connected with whole fire alarm system by communication bus or detection bus 20.
It addition, the alarm threshold value of described laser detector 18 ' is to be determined by test according to factors such as the kinds of the size of wind speed, the situation of protected area, combustible substance in laser detector 18 ' each in whole system.
Described distributed air smoke detection system can use sampling tube set-up mode flexibly on each laser detector 18 ', such as multitube or single tube, single or dendroid.
In described distributed air smoke detection system, main pipeline 21 can up-sample the aperture in hole and the size in space, protected area etc. because usually determining according to the quantity of spot sampling pipe 1, sampling tube 1.
Claims (4)
1. a distributed air sampling smoke detection system, it is characterised in that: described distributed air sampling smoke detection system includes at least one system fan (4 '), main pipeline (21) and is arranged on some set of samples of protected area diverse location；System fan (4 ') is connected to one end of main pipeline (21)；Each set of samples is made up of with sampling tube (1), blast connection (2) and the laser detector (18 ') of thieff hatch single channel；Wherein laser detector (18 ') includes filter assemblies (5), laser detection room (6), laser assembly (7) and controls device (19)；Sampling tube (1) is connected with filter assemblies (5) by blast connection (2)；Filter assemblies (5) is arranged at the air inlet of laser detection room (6)；Main pipeline (3) is connected with laser detection room (6) gas outlet in some set of samples simultaneously；Laser assembly (7) is arranged on the inside of laser detection room (6), is made up of generating laser and receptor；Control in the cabinet that device (19) is then arranged in laser detection room (6) side.
Distributed air sampling smoke detection system the most according to claim 1, it is characterised in that: described control device (19) includes microprocessor (11), power module (12), Laser Driven module (13), laser signal processing module (16) and display module (17)；Wherein:
Microprocessor (11) is mainly made up of analog-digital converter, data processing unit and performance element, laser detection signal for receiving carries out analog digital conversion, and compare with default respective threshold, judge, output after treatment is given corresponding control, is driven or display module, and export corresponding alarm signal when breaking out of fire, fault, and by input equipment, air-flow, alert levels, laser transmitter projects frequency can be set；
Power module (12), is connected with microprocessor (11), and utilizing the outside input power provided is above-mentioned each module for power supply；
Laser Driven module (13), is connected with the generating laser in microprocessor (11) and laser assembly (7), is used for driving laser transmitter projects laser beam；
Laser signal processing module (16), it is connected with microprocessor (11) and laser assembly (7), signal for sending laser assembly (7) is sampled, is amplified, and the signal after processing and amplifying and reference signal are compared, analyze, it is then transferred to microprocessor (11)；
Display module (17), is connected with microprocessor (11), is used for showing air-flow, branch, smokescope, alarm condition.
Distributed air sampling smoke detection system the most according to claim 2, it is characterised in that: the model of described microprocessor (11) is LPC2131；The model of Laser Driven module (13) is IC-WJB；The model of laser signal processing module (16) is INA326, LM358, LT1112 or MC78L05CP；The model of display module (17) is ZLG7290, SM420254, MAX1487 or B505.
Distributed air sampling smoke detection system the most according to claim 1, it is characterised in that: described system fan (4 ') uses radial fan.
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| CN104464166B (en) * | 2014-12-16 | 2016-08-31 | 公安部沈阳消防研究所 | A kind of air suction type fire detecting system based on open loop gas circuit and method |
| EP3483585B1 (en) | 2017-11-13 | 2022-06-29 | Carrier Corporation | Air particulate detection system |
| CN108760687B (en) * | 2018-04-08 | 2021-08-17 | 深圳市天得一环境科技有限公司 | Laser scattering oil fume monitor |
| CN109030295A (en) * | 2018-08-30 | 2018-12-18 | 安徽乐锦记食品有限公司 | A kind of bread processing anomaly alarming device smog extraction detection device |
| CN111257067A (en) * | 2018-11-30 | 2020-06-09 | 中国科学院大连化学物理研究所 | Modularization flue gas sampling appearance |
| CN110176123A (en) * | 2019-05-30 | 2019-08-27 | 北京迪恩康硕科技发展有限公司 | A kind of air suction type smoke fire detector |
| CN112525626A (en) * | 2020-12-01 | 2021-03-19 | 蓝菠万(山东)科技有限公司 | Accurate positioning system and method for pipeline air suction type air sampling abnormal position |
| CN114842609A (en) * | 2022-03-18 | 2022-08-02 | 浙江华消科技有限公司 | Smoke detection system and smoke positioning method |
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| JPH09147256A (en) * | 1995-11-22 | 1997-06-06 | Matsushita Electric Works Ltd | Disaster prevention system |
| AUPN965996A0 (en) * | 1996-05-03 | 1996-05-30 | Vision Products Pty Ltd | The detection of airborne pollutants |
| CN201408468Y (en) * | 2009-05-19 | 2010-02-17 | 深圳市金鹏源辐照技术有限公司 | Smoke alarm installation structure and irradiation system |
| CN101727727B (en) * | 2009-11-30 | 2011-06-15 | 西安博康电子有限公司 | Suction-type double detection smoke-sensing fire detection system and alarm method thereof |
| CN102750848A (en) * | 2012-06-08 | 2012-10-24 | 中国科学技术大学 | Subway station fire experiment simulation device |
| CN203250387U (en) * | 2013-05-06 | 2013-10-23 | 西安博康电子有限公司 | Distributed air sampling smoke detection system |
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