CN203025892U - Active aspiration point type photoelectric smoke sensing detector - Google Patents
Active aspiration point type photoelectric smoke sensing detector Download PDFInfo
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- CN203025892U CN203025892U CN 201320008690 CN201320008690U CN203025892U CN 203025892 U CN203025892 U CN 203025892U CN 201320008690 CN201320008690 CN 201320008690 CN 201320008690 U CN201320008690 U CN 201320008690U CN 203025892 U CN203025892 U CN 203025892U
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Abstract
The utility model relates to an active aspiration point type photoelectric smoke sensing detector. The active aspiration point type photoelectric smoke sensing detector comprises a photoelectric smoke sensing part, a fan, a detection cavity, a filter screen with an optical maze, a signal processing unit, a housing, an alarm siren and an indicating lamp, wherein the photoelectric smoke sensing part, the filter screen with the optical maze and the signal processing unit are positioned in the detection cavity, the whole detection cavity is sealed by the housing, and the fan C is mounted at the top of the housing G of the detector; the photoelectric smoke sensing part comprises infrared luminescent tubes, the included angle theta between the two infrared luminescent tubes is 140-150 degrees, and the central wavelength is 553nm; and smoke concentration signals collected by the photoelectric smoke sensing part are received, multiple groups of current data are obtained, then saved and further integrated with the data which is collected before, comprehensive analysis is performed to reach a conclusion, whether a fire disaster occurs or not is judged, if the fire disaster does not occur, the data is continuously collected, and if the fire disaster occurs, a sound and light alarm program is called to alarm so as to enable the alarm siren and the indicating lamp to work. The active aspiration point type photoelectric smoke sensing detector disclosed by the utility model has high response speed and good real-time property.
Description
Technical field
The utility model relates to the detection field, relates 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.
The utility model content
The purpose of this utility model is to solve the outside Fire Smoke turnover of existing Point type optical smoke detector to 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 utility model 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 utility model advantage compared with prior art is:
(1) the utility model 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 utility model has been accelerated the exchange rate of inside cavity air-flow with the external world, and real-time, the accuracy of detector greatly improve.The utility model has wide application prospect in the detection field.
(3) two infrared receiving tubes of the present utility model 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 utility model;
Fig. 2 is active inspiration formula Point type optical smoke detector structural top sectional view of the present utility model;
Fig. 3 is active inspiration formula Point type optical smoke detector hardware block diagram of the present utility model;
Fig. 4 is active inspiration formula Point type optical smoke detector software flow pattern of the present utility model.
Embodiment
As shown in Figure 1, 2, the utility model 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.The high 10mm of the wide 30mm of the long 30mm of fan C size, power 0.35W.
As shown in Figure 3, the utility model active inspiration formula Point type optical smoke detector, 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 the utility model active inspiration formula Point type optical smoke detector 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 utility model 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 utility model does not elaborate part and 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 the utility model spirit, all should drop in protection domain of the present utility model.
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 detection chamber (D) with screen pack (E) and the signal processing unit (F) in optics labyrinth; Surveying chamber (D) is sealed by shell (G); Fan (C) is arranged on the top of probe body (G); Screen pack (E) with the optics labyrinth is distributed in air intake opening and the gas outlet of surveying chamber (D); Photoelectric smoke partly comprises infraluminescence pipe (A) and infrared receiving tube (B), 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) is launched, when having smoke particle to enter, infraluminescence pipe (A) sends ir scattering light, infrared receiving tube (B) receives described scattered light, be 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 the work of alarming horn (H) and pilot lamp (I).
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320008690 CN203025892U (en) | 2013-01-08 | 2013-01-08 | Active aspiration point type photoelectric smoke sensing detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320008690 CN203025892U (en) | 2013-01-08 | 2013-01-08 | Active aspiration point type photoelectric smoke sensing detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203025892U true CN203025892U (en) | 2013-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320008690 Expired - Fee Related CN203025892U (en) | 2013-01-08 | 2013-01-08 | Active aspiration point type photoelectric smoke sensing detector |
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| CN (1) | CN203025892U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103093574A (en) * | 2013-01-08 | 2013-05-08 | 中国科学技术大学 | Active inspiration type point type photoelectric smoke detector |
| WO2016116024A1 (en) * | 2015-01-20 | 2016-07-28 | 西安博康电子有限公司 | Point-type active smoke detector with or without gas sampling tube and air sampling system |
| CN115240358A (en) * | 2022-05-25 | 2022-10-25 | 中国船舶重工集团公司第七0三研究所 | A formula of breathing in smoke is felt and is surveyed structure for smog concentration detection |
| US11783688B2 (en) | 2018-03-13 | 2023-10-10 | Carrier Corporation | Aspirating detector system |
-
2013
- 2013-01-08 CN CN 201320008690 patent/CN203025892U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103093574A (en) * | 2013-01-08 | 2013-05-08 | 中国科学技术大学 | Active inspiration type point type photoelectric smoke detector |
| WO2016116024A1 (en) * | 2015-01-20 | 2016-07-28 | 西安博康电子有限公司 | Point-type active smoke detector with or without gas sampling tube and air sampling system |
| US11783688B2 (en) | 2018-03-13 | 2023-10-10 | Carrier Corporation | Aspirating detector system |
| CN115240358A (en) * | 2022-05-25 | 2022-10-25 | 中国船舶重工集团公司第七0三研究所 | A formula of breathing in smoke is felt and is surveyed structure for smog concentration detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20160108 |