CN102163364A - Smoke detector sensitivity detecting device based on obscuration principle - Google Patents
Smoke detector sensitivity detecting device based on obscuration principle Download PDFInfo
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- CN102163364A CN102163364A CN 201110069882 CN201110069882A CN102163364A CN 102163364 A CN102163364 A CN 102163364A CN 201110069882 CN201110069882 CN 201110069882 CN 201110069882 A CN201110069882 A CN 201110069882A CN 102163364 A CN102163364 A CN 102163364A
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Abstract
The invention belongs to fire safety detecting equipment, relating to a smoke detector sensitivity detecting device based on the obscuration principle. The device provided by the invention is structurally characterized by comprising a testing loop, an aerosol generator, an air flow control fan and a processor, wherein the testing loop is composed of a testing barrel, a reflow tube, a testing room and a transparent smoke cup; and a smoke concentration detecting system based on the dimming principle is arranged in the testing room, and is composed of an alignment optical system, an absorption pool, a photoelectric detector and a galvanometer. When the device provided by the invention is used for detecting, aerosol smoke enters the absorption pool, the photoelectric detector receives the absorbed light intensity information after an incident light is absorbed and attenuated by the aerosol in the absorption pool, an obscuration coefficient can be obtained through the data processing, then the detected smoke concentration is obtained to be displayed on the liquid crystal display of the processor and compared with a standard concentration of a smoke detector alarm, the quantitative detection on the flexibility of the smoke detector can be realized depends on the alarming of an audible and visible alarm.
Description
Technical field
The novel smoke alarm sensitivity detector that provides a kind of based on the dim light principle of the present invention belongs to the security against fire checkout equipment.
Background technology
Along with the enhancing of people to the fire-fighting awareness of safety, automatic fire alarm system is used widely in each buildings at present, therefore, regularly detects and safeguard the sensitivity of smoke alarm in the fire alarm system, guarantees its operate as normal, is very important.Usually the method for check smoke alarm is to be the cigarette source with fragrant rod burning, utilizes air pump or fan through specific flue the sense smoke-box that flue gas imports to smoke alarm to be tested.But the shortcoming of this method mainly shows as: 1, in the quiescent interval of testing process, owing to there is not enough oxygen, fragrant rod is easy to extinguish, and brings difficulty to detection, and detection efficiency is low; 2, it is wayward to rise cigarette speed, and it is long to rise the cigarette time; 3, can only detect system sensitivity qualitatively, when smog no show warning concentration, whether the performance that can accurately not judge tested smoke alarm is intact; 4, tobacco tar is easily attached to flue inwall, not easy cleaning.
Summary of the invention
The purpose of this invention is to provide a kind of smoke alarm sensitivity detector based on the dim light principle, can solve existing problem in the above-mentioned smoke alarm sensitivity detector at the user demand of smoke alarm sensitivity detection in the automatic fire alarm system.
Technical scheme of the present invention is as follows:
A kind of smoke alarm sensitivity detector based on the dim light principle, its structure comprise test loop, aerosol generator, air-flow control fan and processor.Wherein, test loop is made up of test barrel, recirculatory pipe, test cabinet and transparent cigarette sense cup; Processor is made up of lock-in amplifier, data acquisition and A/D modular converter and audible and visible alarm.
The test barrel and the recirculatory pipe of parallel placement are housed below transparent cigarette sense cup, below test barrel and recirculatory pipe, test cabinet are arranged, the gentle current control fan of aerosol generator is housed below test cabinet, guarantee gas velocity by smoke detector.Also be provided with an interface in detection system, this interface is connected with processor, makes the detection of processor control smoke alarm sensitivity.
Described smoke alarm sensitivity detector based on the dim light principle is tested by the aerosol cloud that aerosol generator produces, and has solved the fragrant rod of common smoke alarm and has extinguished, rises problems such as cigarette time length easily.
Be provided with a smokescope detection system in the described test cabinet, this smokescope detection system is used for measuring the aerocolloidal concentration by test barrel.
Described smokescope detection system, be based on stable and accurately the dim light principle detect the concentration of smog, before its work, should calibrate and demarcate.The aerosol cloud that appears the aerosol generator generation for the first time is demarcated smokescope by demarcating a grain spectrometer; Again with the detection light path of aerosol cloud by the smokescope detection system, obtain based on the pairing electric current changing value of smokescope under the dim light principle by galvanometer, contrast again by demarcating a smokescope of spectrometer demarcation and detecting the current value that light path obtains, obtain the pairing current value of cigarette sense warning concentration, thereby the smokescope detection system is calibrated and demarcated.
Described smokescope detection system under the contaminated situation in surface, can be carried out self check and self-correcting, has solved the problem that common smoke alarm pick-up unit can only detect system sensitivity qualitatively.
Described smokescope detection system mainly is made up of light source, collimating optical system, absorption cell, photodetector and galvanometer.
Described absorption cell is provided with a plurality of catoptrons as detecting air chamber.After detecting light beam incident absorption cell, between the reflector group of absorption cell, repeatedly reflect, improve optical path length, thereby strengthened aerosol cloud to be measured absorption of incident light.
Gasoloid enters absorption cell, by after the gasoloid attenuation by absorption, the light intensity signal after being obtained to be absorbed by photodetector is converted to electric signal and gives processor incident light again in absorption cell, can obtain obscuration coefficient through data processing, thereby carry out the detection of smokescope.
Gasoloid is flowed through and is extracted out by air pump behind the whole air chamber, and is cleaned by cleaning nitrogen, has solved in the common smoke alarm pick-up unit owing to use fragrant rod, and tobacco tar adheres to the flue inwall, the problem that is difficult to clean.
Described light source adopts the monochromatic LED light emitting diode, has characteristics such as energy-saving and environmental protection, life-span are long, in light weight.
The light that collimating optical system sends the LED light emitting diode is proofreaied and correct and is directional light, thereby improves the utilization factor of luminous flux.
The present invention is based on the smoke alarm sensitivity detector of dim light principle, has following beneficial effect:
1, adopts aerosol generator, can solve in the common smoke alarm fragrant rod and extinguish, rise the cigarette time easily and problem such as grow, improved detection efficiency;
2, can use the nitrogen purge flue, avoid that tobacco tar adheres to the flue inwall in the common smoke alarm, the problem that is difficult to clean;
3, adopt the dim light principle to detect smokescope, can realize detection by quantitative smoke alarm sensitivity.
Description of drawings
Fig. 1 is based on the structural representation of the smoke alarm sensitivity detector of dim light principle (also as Figure of abstract);
Fig. 2 is the schematic diagram based on smokescope detection system in the smoke alarm sensitivity detector test barrel of dim light principle.
Among the figure: 1, transparent cigarette sense cup, 2, test barrel, 3, test cabinet, 4, smokescope detection system, 5, air-flow control fan, 6, interface, 7, processor, 8, wiring, 9, aerosol generator, 10, recirculatory pipe, 11, light source, 12, collimating optical system, 13, absorption cell, 14, reflector group, 15, photodetector, 16, galvanometer.
Embodiment
As shown in Figure 1, smoke alarm sensitivity detector based on the dim light principle, below transparent cigarette sense cup 1, test barrel 2 and recirculatory pipe 10 are housed, test barrel 2 and recirculatory pipe 10 parallel placements, there is test cabinet 3 below of test barrel 2 and recirculatory pipe 10, aerosol generator 9 gentle current control fans 5 are housed below test cabinet 3, the gas velocity that air-flow control fan 5 guarantees by smoke detector, interface 6 is connected with processor 7 by wiring 8, by the switch of processor 7, can open or close the detection of smoke alarm sensitivity.
As shown in Figure 2, based on smokescope detection system in the smoke alarm sensitivity detector test barrel of dim light principle, the light that led light source 11 sends through inciding absorption cell 13 abreast behind the collimating optical system 12, repeatedly reflects in 14 of the reflector group of absorption cell 13.Aerosol cloud enters absorption cell 13, incident light in absorption cell 13 by after the gasoloid attenuation by absorption, light intensity signal after obtaining to be absorbed by photodetector 15, be converted to electric signal again and give galvanometer 16, thereby obtain the intensity signal that photodetector receives, can obtain obscuration coefficient through data processing, obtain tested smokescope, on the liquid crystal display of processor, show smokescope.Galvanometer obtain based on the pairing electric current changing value of smokescope under the dim light principle, the pairing current value of cigarette sense warning concentration of correlation calibration.If reach warning concentration, do not send audible and visible alarm, there is fault in tested cigarette sense; Send audible and visible alarm, tested cigarette sense is in good condition.
Claims (2)
1. based on the smoke alarm sensitivity detector of dim light principle, its structure comprises test loop, aerosol generator 9, air-flow control fan 5 and processor 7.Wherein, test loop is made up of test barrel 2, recirculatory pipe 10, test cabinet 3 and transparent cigarette sense cup 1.
2. the smoke alarm sensitivity detector based on the dim light principle according to claim 1, it is characterized in that: the light that led light source 11 sends, through inciding absorption cell 13 abreast behind the collimating optical system 12, repeatedly reflect in 14 of the reflector group of absorption cell 13.Aerosol cloud enters absorption cell 13, incident light in absorption cell 13 by after the gasoloid attenuation by absorption, light intensity signal after obtaining to be absorbed by photodetector 15, be converted to electric signal again and give galvanometer 16, thereby obtain the intensity signal that photodetector receives, can obtain obscuration coefficient through data processing, obtain tested smokescope, on the liquid crystal display of processor, show smokescope.Galvanometer 16 obtain based on the pairing electric current changing value of smokescope under the dim light principle, the pairing current value of smoke alarm warning concentration of correlation calibration.If reach warning concentration, do not send audible and visible alarm, there is fault in tested smoke alarm; Send audible and visible alarm, tested smoke alarm is in good condition.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110069882 CN102163364A (en) | 2011-03-23 | 2011-03-23 | Smoke detector sensitivity detecting device based on obscuration principle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110069882 CN102163364A (en) | 2011-03-23 | 2011-03-23 | Smoke detector sensitivity detecting device based on obscuration principle |
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| CN 201110069882 Pending CN102163364A (en) | 2011-03-23 | 2011-03-23 | Smoke detector sensitivity detecting device based on obscuration principle |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680038A (en) * | 2012-09-19 | 2014-03-26 | 成都科盛石油科技有限公司 | Smoke box improved structure for detecting smoke detector |
| CN103994986A (en) * | 2014-01-17 | 2014-08-20 | 徐继承 | Portable type device for detecting response threshold of smoke fire detector |
| CN104637234A (en) * | 2015-02-11 | 2015-05-20 | 中煤科工集团重庆研究院有限公司 | Smoke detector certification device and calibration method based on laser light scattering measurement principle |
| CN104849241A (en) * | 2015-05-14 | 2015-08-19 | 西安近代化学研究所 | Calibration method of system for testing light shielding capability of smoke of propellants |
| CN105788200A (en) * | 2016-05-18 | 2016-07-20 | 宁波科赛迪电子科技有限公司 | Smoke alarm sensitivity detection device |
| CN107744963A (en) * | 2017-11-15 | 2018-03-02 | 南京冠鼎光电科技有限公司 | Photoelectric mist alarm automatic detection device |
| JP2018185640A (en) * | 2017-04-26 | 2018-11-22 | ホーチキ株式会社 | Smoke sensor test device |
| CN110111482A (en) * | 2018-07-20 | 2019-08-09 | 深圳怡化电脑股份有限公司 | A kind of method, apparatus of equipment self-inspection, ATM and storage medium |
| CN110780043A (en) * | 2019-11-21 | 2020-02-11 | 深圳市泛海三江电子股份有限公司 | Method for obtaining high-precision detector orientation test result |
| CN113048891A (en) * | 2021-03-26 | 2021-06-29 | 佛山翰创检测仪器有限公司 | Effective length measuring device of transmission-type smoke meter light channel |
| CN113920705A (en) * | 2021-09-17 | 2022-01-11 | 深圳市领航卫士安全技术有限公司 | Photoelectric smoke sensing test method and device, photoelectric smoke sensing equipment and storage medium |
| CN114078312A (en) * | 2020-08-19 | 2022-02-22 | 霍尼韦尔国际公司 | Self-calibrating fire sensing device |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680038A (en) * | 2012-09-19 | 2014-03-26 | 成都科盛石油科技有限公司 | Smoke box improved structure for detecting smoke detector |
| CN103994986A (en) * | 2014-01-17 | 2014-08-20 | 徐继承 | Portable type device for detecting response threshold of smoke fire detector |
| CN103994986B (en) * | 2014-01-17 | 2017-01-18 | 徐继承 | Portable type device for detecting response threshold of smoke fire detector |
| CN104637234A (en) * | 2015-02-11 | 2015-05-20 | 中煤科工集团重庆研究院有限公司 | Smoke detector certification device and calibration method based on laser light scattering measurement principle |
| CN104637234B (en) * | 2015-02-11 | 2017-01-11 | 中煤科工集团重庆研究院有限公司 | Smoke detector certification device and calibration method based on laser light scattering measurement principle |
| CN104849241A (en) * | 2015-05-14 | 2015-08-19 | 西安近代化学研究所 | Calibration method of system for testing light shielding capability of smoke of propellants |
| CN104849241B (en) * | 2015-05-14 | 2017-12-22 | 西安近代化学研究所 | The calibration method of propellant smog light screening capacity test system |
| CN105788200A (en) * | 2016-05-18 | 2016-07-20 | 宁波科赛迪电子科技有限公司 | Smoke alarm sensitivity detection device |
| JP2018185640A (en) * | 2017-04-26 | 2018-11-22 | ホーチキ株式会社 | Smoke sensor test device |
| CN107744963A (en) * | 2017-11-15 | 2018-03-02 | 南京冠鼎光电科技有限公司 | Photoelectric mist alarm automatic detection device |
| CN107744963B (en) * | 2017-11-15 | 2024-05-03 | 上海顺帮智能科技有限公司 | Automatic detection device for photoelectric smoke alarm |
| CN110111482A (en) * | 2018-07-20 | 2019-08-09 | 深圳怡化电脑股份有限公司 | A kind of method, apparatus of equipment self-inspection, ATM and storage medium |
| CN110111482B (en) * | 2018-07-20 | 2022-05-10 | 深圳怡化电脑股份有限公司 | Equipment self-checking method and device, ATM (automatic Teller machine) and storage medium |
| CN110780043A (en) * | 2019-11-21 | 2020-02-11 | 深圳市泛海三江电子股份有限公司 | Method for obtaining high-precision detector orientation test result |
| CN110780043B (en) * | 2019-11-21 | 2022-01-04 | 深圳市泛海三江电子股份有限公司 | Method for obtaining high-precision detector orientation test result |
| CN114078312A (en) * | 2020-08-19 | 2022-02-22 | 霍尼韦尔国际公司 | Self-calibrating fire sensing device |
| CN113048891A (en) * | 2021-03-26 | 2021-06-29 | 佛山翰创检测仪器有限公司 | Effective length measuring device of transmission-type smoke meter light channel |
| CN113920705A (en) * | 2021-09-17 | 2022-01-11 | 深圳市领航卫士安全技术有限公司 | Photoelectric smoke sensing test method and device, photoelectric smoke sensing equipment and storage medium |
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Application publication date: 20110824 |