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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Abstract
The invention relates to an active inspiration type point type photoelectric smoke detector which comprises a photoelectric smoke detecting part, a fan, a detecting cavity, a filtering screen with an optical maze, a signal processing unit, an outer shell, an alarming horn and an indicating lamp. The photoelectric smoke detecting part, the filtering screen with the optical maze and the signal processing unit are arranged in the detecting cavity, the whole detecting cavity is sealed by the outer shell, and the fan C is installed on the top portion of the outer shell G of the detector. The photoelectric smoke detecting part is composed of infrared luminescent tubes, an included angle theta is formed between each two infrared luminescent tubes and is from 140 degrees to 150 degrees, and the center wavelength is 553nm. Smoke density signals collected by the photoelectric smoke detecting part are received by the active inspiration type point type photoelectric smoke detector, when a plurality of groups of data are obtained at present, then the data are saved, and the data are combined with the pre-collected data, and a conclusion is obtained after comprehensive analysis, then the photoelectric smoke detector judges whether a fire happens, if the fire does not happen, the photoelectric smoke detector continues to collect data, and if the fire happens, the photoelectric smoke detector calls a sound-light alarm system to alarm so as to enable the alarming horn and the indicating lamp to work. The active inspiration type point type photoelectric smoke detector is fast in response speed and good in 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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| 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 |