CN103093574A - Active inspiration type point type photoelectric smoke detector - Google Patents
Active inspiration type point type photoelectric smoke detector Download PDFInfo
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- CN103093574A CN103093574A CN2013100067863A CN201310006786A CN103093574A CN 103093574 A CN103093574 A CN 103093574A CN 2013100067863 A CN2013100067863 A CN 2013100067863A CN 201310006786 A CN201310006786 A CN 201310006786A CN 103093574 A CN103093574 A CN 103093574A
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- 239000000779 smoke Substances 0.000 title claims abstract description 63
- 230000003287 optical effect Effects 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 241001269238 Data Species 0.000 claims description 2
- 238000013461 design Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000001235 sensitizing effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
一种主动吸气式点型光电感烟探测器包括：光电感烟部分、风扇、探测腔室、带光学迷宫的过滤网、信号处理单元、外壳、报警喇叭及指示灯；光电感烟部分、带光学迷宫的过滤网、信号处理单元位于探测腔室内，整个探测腔室由外壳密封，风扇C安装在探测器外壳G的顶部；光电感烟部分包括红外发光管组成，两者之间的夹角θ为140～150度，中心波长553nm；接收光电感烟部分采集的烟浓度信号，得到当前多组数据后保存，并与之前采集到的数据整合，综合分析得出结论，判断是否发生火灾，如未发生火灾则继续采集数据，如发生火灾则调用声光报警程序进行报警，使报警喇叭及指示灯工作。本发明具有高的响应速度及好的实时性。
An active suction point-type photoelectric smoke detector includes: a photoelectric smoke part, a fan, a detection chamber, a filter screen with an optical labyrinth, a signal processing unit, a casing, an alarm horn and an indicator light; the photoelectric smoke part, The filter screen with optical labyrinth and the signal processing unit are located in the detection chamber, the entire detection chamber is sealed by the casing, and the fan C is installed on the top of the detector casing G; The angle θ is 140-150 degrees, and the central wavelength is 553nm; receive the smoke concentration signal collected by the photoelectric smoke part, save the current multi-set data, and integrate it with the previously collected data, comprehensively analyze and draw conclusions, and judge whether a fire has occurred If there is no fire, continue to collect data, if there is a fire, call the sound and light alarm program to make an alarm, so that the alarm horn and indicator light work. The invention has high response speed and good real-time performance.
Description
Technical field
The present invention relates to the detection field, relate in particular to a kind of Point type optical smoke detector with active inspiration function.
Background technology
Point type optical smoke detector is the most widely used fire detector in domestic and international urban architecture, and it can be reported to the police at the fire early period of origination, is of great significance for the timely discovery condition of a fire and the tool that control effectively.Point type optical smoke detector, its design concept is that smoke particle is to the scattering process of incident light, and it is inner at optical detector of fire smoke, smoke particle is to enter in the sensitizing range of detector sensing system by cover body, so, enter smoke particle direction, speed and concentration in sensing system, determined the sensitivity that sensing is reported to the police.And original optical detector of fire smoke is the convection current diffusion that relies on gas, and the smoke particle particle enters the problem that the inside cavity life period is long, delay is large, and smoke particle is long at the inner residence time of detector, sensitivity and real-time that impact is surveyed.So development is based on the novel photoelectric smoke detector of active inspiration function, be very necessary in order to improve the response speed surveyed, to reduce the response time.
Summary of the invention
The objective of the invention is to solve the outside Fire Smoke turnover of existing Point type optical smoke detector and survey the problems such as cavity speed is slow, detector response time is long, real-time is poor, a kind of active inspiration formula Point type optical smoke detector is provided, has high response speed and real-time high.
The present invention adopts following technical scheme: a kind of active inspiration formula Point type optical smoke detector comprises: photoelectric smoke part, fan C, detection chamber D, the screen pack E with the optics labyrinth, signal processing unit F, shell G, alarming horn H and pilot lamp I; Photoelectric smoke part, be positioned at the screen pack E in optics labyrinth and signal processing unit F and survey chamber D; Surveying chamber D is sealed by shell G; Fan C is arranged on the top of probe body G, makes the internal gas flow velocity accelerate by outside blowing; Screen pack E with the optics labyrinth is distributed in air intake opening and the gas outlet of surveying chamber D, the existence in optics labyrinth, make extraneous light be difficult to enter and survey in chamber D and then affect the light path normal operation, make again simultaneously smooth and easy must the turnover of ambient atmos survey chamber D, the effect of screen pack is mainly to stop entering of small worm and bulky grain thing to survey chamber D; Photoelectric smoke partly comprises infraluminescence pipe A and infrared receiving tube B, plays respectively the effect that transmits and receives infrared light, and infraluminescence pipe A and the angled θ of infrared receiving tube B are 140～150 degree, centre wavelength 553nm; When entering without smoke particle, infrared receiving tube B can't receive the infrared light that infraluminescence pipe A launches, when having smoke particle to enter, scattering process due to smoke particle, infraluminescence pipe A sends ir scattering light, and infrared receiving tube B receives described scattered light, i.e. the smoke density signal, according to described scattered light intensity, differentiate whether breaking out of fire; Signal processing unit F comprises power amplifier, AD conversion and processor, the scattered light intensity signal that infrared receiving tube B receives enters processor through power amplifier, AD after changing, processor connects the smoke density signal, obtain preserving after current many group smoke density signal datas, and integrate with the smoke density signal data that collects before, reach a conclusion, judge whether breaking out of fire, continue image data as breaking out of fire not, call the sound and light alarm program as breaking out of fire and report to the police, make alarming horn H and pilot lamp I work.
The high 10mm of the wide 30mm of long 30mm of described fan C, power 0.35W.
Described signal processing unit adopts the dsp chip of TMS320 series high-performance low-power consumption, power consumption 0.1W during normal operation.
The present invention's advantage compared with prior art is:
(1) the present invention is at probe chamber top provided with fan, adopt the mode of active inspiration to shorten the time that smoke particle enters detector cavity inside, make the response speed of detector improve at least 5 times, through test simulation, in the situation of equal flow field, the wind regime effect of 0.35W, the time that smoke particle enters inside cavity has relied on time shorten that gas diffuses into 46%, simultaneously, smoke particle also reduces to original 39% at the residence time of inside cavity.This shows, this invention is very helpful to the raising of explorer response speed and real-time.
(2) the present invention has accelerated the exchange rate of inside cavity air-flow with the external world, and real-time, the accuracy of detector greatly improve.The present invention has wide application prospect in the detection field.
(3) two infrared receiving tubes of the present invention are based on the experimental data of different burning things which may cause a fire disaster smoke particle scattering, angle theta is decided to be 140～150 degree, in this angular range, to different burning things which may cause a fire disaster smoke particles, scattered light intensity is all more responsive with the variation of smoke particle concentration, through lot of experiments, greatly improved reaction velocity and reaction time, make real-time and accuracy rate greatly improve.
Description of drawings
Fig. 1 is the left side sectional view of active inspiration formula Point type optical smoke detector structure of the present invention;
Fig. 2 is active inspiration formula Point type optical smoke detector structural top sectional view of the present invention;
Fig. 3 is active inspiration formula Point type optical smoke detector hardware block diagram of the present invention;
Fig. 4 is active inspiration formula Point type optical smoke detector software flow pattern of the present invention.
Embodiment
As shown in Figure 1, 2, active inspiration formula Point type optical smoke detector of the present invention comprises: photoelectric smoke part, fan C, detection chamber D, the screen pack E with the optics labyrinth, signal processing unit F, shell G, alarming horn H and pilot lamp I.
Photoelectric smoke part, be positioned at the screen pack E in optics labyrinth and signal processing unit F and survey chamber D; Surveying chamber D is sealed by shell G; Fan C is arranged on the top of probe body G, makes the internal gas flow velocity accelerate by outside blowing; Screen pack E with the optics labyrinth is distributed in air intake opening and the gas outlet of surveying chamber D, the existence in optics labyrinth, make extraneous light be difficult to enter and survey in chamber D and then affect the light path normal operation, make again simultaneously smooth and easy must the turnover of ambient atmos survey chamber D, the effect of screen pack is mainly to stop entering of small worm and bulky grain thing to survey chamber D.The high 10mm of the wide 30mm of the long 30mm of fan C size, power 0.35W.
As shown in Figure 3, active inspiration formula Point type optical smoke detector of the present invention, photoelectric smoke partly comprises infraluminescence pipe A and infrared receiving tube B, plays respectively the effect that transmits and receives infrared light, angle theta between the two is 140～150 degree, centre wavelength 553nm.
Signal processing unit adopts the dsp chip of TMS320 series high-performance low-power consumption, power consumption 0.1W during normal operation; The detector total power consumption is about 0.5W.Signal processing unit F comprises power supply, power amplifier, AD conversion and processor, and the scattered light that infrared receiving tube B receives enters processor through power amplifier, AD after changing.
As shown in Figure 4, at first active inspiration formula Point type optical smoke detector of the present invention carries out initialization to the driver of detector, then drives photoelectric smoke and partly gathers the smoke density signal, and after the collection multi-group data, the entering signal is processed.Processor can be preserved current data, and with the Data Integration that collects before, analysis-by-synthesis is reached a conclusion, and judges whether breaking out of fire.Continue image data as breaking out of fire not, call the sound and light alarm program as breaking out of fire and report to the police, until EOP (end of program).
In sum, owing to having adopted above design, the present invention is than prior art, and the response speed of detector improves 5 times at least, and the real-time of detection data also improves more than 5 times.
The non-elaborated part of the present invention belongs to techniques well known.
Above disclosed be only the preferred embodiment of invention, but be not to limit itself, any those of ordinary skill in the art, variation that can think of is in the situation that without prejudice to spirit of the present invention, all should drop in protection scope of the present invention.
Claims (3)
1. an active inspiration formula Point type optical smoke detector, is characterized in that comprising: photoelectric smoke part, fan C, detection chamber D, the screen pack E with the optics labyrinth, signal processing unit F, shell G, alarming horn H and pilot lamp I; Photoelectric smoke part, be positioned at the screen pack E in optics labyrinth and signal processing unit F and survey chamber D; Surveying chamber D is sealed by shell G; Fan C is arranged on the top of probe body G, makes the internal gas flow velocity accelerate by outside blowing; Screen pack E with the optics labyrinth is distributed in air intake opening and the gas outlet of surveying chamber D, the existence in optics labyrinth, make extraneous light be difficult to enter and survey in chamber D and then affect the light path normal operation, make again simultaneously smooth and easy must the turnover of ambient atmos survey chamber D, the effect of screen pack is mainly to stop entering of small worm and bulky grain thing to survey chamber D; Photoelectric smoke partly comprises infraluminescence pipe A and infrared receiving tube B, plays respectively the effect that transmits and receives infrared light, and infraluminescence pipe A and the angled θ of infrared receiving tube B are 140～150 degree, both centre wavelength 553nm; When entering without smoke particle, infrared receiving tube B can't receive the infrared light that infraluminescence pipe A launches, when having smoke particle to enter, scattering process due to smoke particle, infraluminescence pipe A sends ir scattering light, and infrared receiving tube B receives described scattered light, i.e. the smoke density signal, according to described scattered light intensity, differentiate whether breaking out of fire; Signal processing unit F comprises power amplifier, AD conversion and processor, the scattered light intensity signal that infrared receiving tube B receives enters processor through power amplifier, AD after changing, processor connects the smoke density signal, obtain preserving after current many group smoke density signal datas, and integrate with the smoke density signal data that collects before, reach a conclusion, judge whether breaking out of fire, continue image data as breaking out of fire not, call the sound and light alarm program as breaking out of fire and report to the police, make alarming horn H and pilot lamp I work.
2. a kind of active inspiration formula Point type optical smoke detector according to claim 1, is characterized in that: the high 10mm of the wide 30mm of long 30mm of described fan C, power 0.35W.
3. a kind of active inspiration formula Point type optical smoke detector according to claim 1, is characterized in that: the dsp chip of described signal processing unit employing TMS320 series high-performance low-power consumption, power consumption 0.1W during normal operation.
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| CN2013100067863A CN103093574A (en) | 2013-01-08 | 2013-01-08 | Active inspiration type point type photoelectric smoke detector |
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| CN2013100067863A CN103093574A (en) | 2013-01-08 | 2013-01-08 | Active inspiration type point type photoelectric smoke detector |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646490A (en) * | 2013-12-20 | 2014-03-19 | 中国科学技术大学 | Composite detection technology based aspirated aircraft cargo space fire detection device |
| CN104200606A (en) * | 2014-07-18 | 2014-12-10 | 中国科学技术大学 | Point-shaped light scattering type smoke detector without optical labyrinth, and signal processing method |
| CN106680171A (en) * | 2017-03-07 | 2017-05-17 | 济南诺方电子技术有限公司 | Rainproof cover of dust sensor |
| CN108447217A (en) * | 2018-02-06 | 2018-08-24 | 深圳市泛海三江电子股份有限公司 | A kind of compact sized optical darkroom |
| CN108765852A (en) * | 2018-06-15 | 2018-11-06 | 芜湖中淇节能科技有限公司 | A kind of security monitoring smoke inductor box device |
| CN110428574A (en) * | 2019-08-11 | 2019-11-08 | 南京中消安全技术有限公司 | A kind of smoke detector and its smoke detection method |
| CN111127811A (en) * | 2019-12-25 | 2020-05-08 | 上海船舶电子设备研究所(中国船舶重工集团公司第七二六研究所) | Fire early detection alarm system and method |
| CN112435435A (en) * | 2020-11-23 | 2021-03-02 | 嘉兴鼎尚信息科技有限公司 | Smoke alarm based on light energy rationalization utilization in smart city |
| CN113034838A (en) * | 2021-03-31 | 2021-06-25 | 郑州轻工业大学 | Fire smoke detector combining terahertz wave detection and detection method |
| CN113237804A (en) * | 2021-05-07 | 2021-08-10 | 吴倩倩 | Detection equipment for preventing fire-fighting hidden danger |
| CN114926953A (en) * | 2022-06-07 | 2022-08-19 | 浙江中辰城市应急服务管理有限公司 | Labyrinth passive power device with cyclone function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646490A (en) * | 2013-12-20 | 2014-03-19 | 中国科学技术大学 | Composite detection technology based aspirated aircraft cargo space fire detection device |
| CN103646490B (en) * | 2013-12-20 | 2016-03-30 | 中国科学技术大学 | A kind of air suction type aircraft hold fire detecting arrangement based on complex probe technology |
| CN104200606A (en) * | 2014-07-18 | 2014-12-10 | 中国科学技术大学 | Point-shaped light scattering type smoke detector without optical labyrinth, and signal processing method |
| CN104200606B (en) * | 2014-07-18 | 2017-02-15 | 中国科学技术大学 | Point-shaped light scattering type smoke detector without optical labyrinth, and signal processing method |
| CN106680171A (en) * | 2017-03-07 | 2017-05-17 | 济南诺方电子技术有限公司 | Rainproof cover of dust sensor |
| CN108447217A (en) * | 2018-02-06 | 2018-08-24 | 深圳市泛海三江电子股份有限公司 | A kind of compact sized optical darkroom |
| CN108765852A (en) * | 2018-06-15 | 2018-11-06 | 芜湖中淇节能科技有限公司 | A kind of security monitoring smoke inductor box device |
| CN110428574B (en) * | 2019-08-11 | 2021-12-31 | 南京中消安全技术有限公司 | Smoke detector and smoke detection method thereof |
| CN110428574A (en) * | 2019-08-11 | 2019-11-08 | 南京中消安全技术有限公司 | A kind of smoke detector and its smoke detection method |
| CN111127811A (en) * | 2019-12-25 | 2020-05-08 | 上海船舶电子设备研究所(中国船舶重工集团公司第七二六研究所) | Fire early detection alarm system and method |
| CN111127811B (en) * | 2019-12-25 | 2022-02-08 | 上海船舶电子设备研究所(中国船舶重工集团公司第七二六研究所) | Fire early detection alarm system and method |
| CN112435435A (en) * | 2020-11-23 | 2021-03-02 | 嘉兴鼎尚信息科技有限公司 | Smoke alarm based on light energy rationalization utilization in smart city |
| CN113034838A (en) * | 2021-03-31 | 2021-06-25 | 郑州轻工业大学 | Fire smoke detector combining terahertz wave detection and detection method |
| CN113237804A (en) * | 2021-05-07 | 2021-08-10 | 吴倩倩 | Detection equipment for preventing fire-fighting hidden danger |
| CN113237804B (en) * | 2021-05-07 | 2024-04-26 | 吴倩倩 | Detection equipment for preventing fire-fighting hidden trouble |
| CN114926953A (en) * | 2022-06-07 | 2022-08-19 | 浙江中辰城市应急服务管理有限公司 | Labyrinth passive power device with cyclone function |
| CN114926953B (en) * | 2022-06-07 | 2024-01-19 | 浙江中辰城市应急服务管理有限公司 | Labyrinth passive power device with cyclone function |
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Application publication date: 20130508 |