CN101807336A - Infrared flame detector based on optical fiber conduction and control method - Google Patents
Infrared flame detector based on optical fiber conduction and control method Download PDFInfo
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- CN101807336A CN101807336A CN 201010122661 CN201010122661A CN101807336A CN 101807336 A CN101807336 A CN 101807336A CN 201010122661 CN201010122661 CN 201010122661 CN 201010122661 A CN201010122661 A CN 201010122661A CN 101807336 A CN101807336 A CN 101807336A
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Abstract
The invention relates to an infrared flame detector based on optical fiber conduction and a control method, belonging to the technical field of fire detection. The detector comprises an optical detection unit, an optical fiber transmission unit and a detection terminal, wherein the optical detection unit is sequentially connected with the optical fiber transmission unit and the detection terminal; the optical detection unit is installed in the field of a protective area, and strong electromagnetic interference and high temperature environment in the field have no influence on collection and processing of electromagnetic waves in the detection waveband; and the detection terminal is installed in an equipment room or a control room with better natural environment and electromagnetic environment. The design mode of separation of the collection link of electromagnetic radiation of flame in the field, the photoelectric conversion and the data processing link ensures that the infrared flame detector based on optical fiber conduction has stronger environmental suitability as comparison with the traditional flame detector. Because the optical detection unit and the optical fiber transmission unit which are installed in the field have no electrical connection, the infrared flame detector is more suitable for fire detection in inflammable and explosive places.
Description
Technical field
The invention belongs to the fire detection technology field, particularly a kind of based on fiber optic conduction infrared flame detector and control method.
Background technology
Fire is a kind of disastrous combustion phenomena; from fire ignition moment; just produce various fire characteristics around; general fire process mainly contains the gas variation characteristic; the smog release characteristic; the heat energy release characteristic; several typical fire characteristics such as luminous energy release characteristic; by real-time monitoring; the environmental parameter situation of change of analysis protection zone corresponding " fire characteristic " just can realize the detection alarm to the particular place fire; because the starting material of petrochemical complex and smelter; secondary product; factors such as final products and special producing technological process have determined the incipient fire in the big place of a lot of fire risks to be characterized as the naked light burning, and therefore discharging based on the luminous energy in the response substance combustion process is that the flame detector of electromagnetic radiation is generally adopted.
The flame detector that uses mainly contains ultraviolet, single band infrared flame detector, bi wave band infra red flame detector and ultraviolet/infrared flame detector at present, the advantage of these flame detectors is: can make response fast to the naked light burning that the protection zone occurs, and on fire to the initial stage of finding early and the protection zone of putting out a fire to save life and property occurs, prevent that spreading of the intensity of a fire has crucial effects; The shortcoming of its existence is: the wrong report phenomenon of detector happens occasionally; Protection zone circumstance complication, inflammable and explosive, high temperature, strong electromagnetic and many dirt, a lot of detectors failure phenomenon just occurs in very short time after putting into operation, can't realize the early fire detection of protection zone, bring hidden danger to management of fire safety.
Summary of the invention
For solving the deficiency of above panel detector structure, purpose of the present invention proposes a kind ofly to utilize in the flame detector optical detection unit and survey infrared flame detector and the control method based on fiber optic conduction that terminal is separated, to reach quick, sensitive, to adapt to the purpose of extreme natural environment more.
Technical scheme of the present invention is achieved in that based on its structure of fiber optic conduction infrared flame detector and comprises optical detection unit, Optical Fiber Transmission unit and survey terminal that the optical detection unit connects the Optical Fiber Transmission unit successively and surveys terminal;
Described optical detection unit comprises optical detection unit housings A, len B, optical filter C, optics collecting system D and optical fiber interface E1, this optical detection unit housings A is half elliptic, its interior end is equipped with len B, is the input end of optical detection unit; Its other end is equipped with optical fiber interface E1, is the output terminal of optical detection unit; Optical filter C and optics collecting system D are installed in the middle of len B and the optical fiber interface E1;
Described Optical Fiber Transmission unit comprises the optical cable that has sheath, and its input end connects the output terminal of optical detection unit, and its output terminal connects the input end of surveying terminal;
Described detection terminal comprises optical fiber interface E2, infrared sensor F, signal processor G, operation processing unit H, output control unit M, the output terminal of optical fiber interface E2 connects the input end of infrared sensor F, signal processor G, operation processing unit H and output control unit I successively, and the output terminal of output control unit I connects fire alarm indicating member J and indicating fault unit K respectively; Sensitivity is provided with unit L concatenation operation processing unit.
The course of work that the present invention is based on the fiber optic conduction infrared flame detector is as follows:
Based on the fiber optic conduction infrared flame detector is a kind of flame detector that utilizes collecting fiber and conduct the protection zone electromagnetic radiation.
Infrared flame detector is used for the electromagnetic wave of the specific band of flame detecting by the optical detection unit collection that is installed in the scene, protection zone, electromagnetic wave is carried out after the convergence processing by the Optical Fiber Transmission unit the electromagnetic transmission of detecting band to the detection terminal that is installed in equipment room or pulpit, to the electromagnetic signal Processing of the detecting band that reflects on-the-spot Fire Radiation Strength Changes, whether the scene naked light burning occurred make promptly and accurately judgement, realize detection specific protection zone;
The optical detection unit housings A of detector and len B are used for the protection to inner optical system, have resistance to corrosion, and degree of protection reaches IP65; Optical filter C is used for being used for from the electromagnetic wave of the electromagnetic radiation screening specific band of flame the detection of flame; Optics collecting system D converges and improves the electromagnetic energy of initial end collecting the detecting band electromagnetic wave in " the detection visual field ", then by optical fiber interface E1 with electromagnetic wave to surveying terminal transmission;
Control method based on the fiber optic conduction infrared flame detector is as follows:
Step 1: the detecting band electromagnetic wave by Optical Fiber Transmission unit transmission is transferred to infrared sensing device F through optical fiber interface E2 and carries out opto-electronic conversion;
Step 2: the voltage signal after infrared sensor F conversion is transferred to signal processor G and carries out the processing of filtering amplifying signal;
Step 3: the voltage signal that the on-the-spot detecting band electromagnetic wave of the reflection after signal processor G handles changes is transferred to operation processing unit H, finish A/D conversion, signals collecting and the calculation process process of voltage signal by operation processing unit H, judged whether that anomalous event takes place, if there is abnormal time to take place, operation processing unit H then controls output control unit I, drive fire alarm indicating member J or indicating fault unit K, output fire alarm or failure indication information;
Step 4: by artificial modification sensitivity the configuration information of unit L is set, operation processing unit H can regulate the warning sensitivity of detector automatically.
Advantage of the present invention: optical detection of the present invention unit is installed in the scene, protection zone and connects without any electrical equipment; survey terminal and be installed in physical environment and electromagnetic environment equipment room or pulpit preferably; guarantee that apparatus of the present invention are not influenced by abominable high humidity, dirty environment, safer, stable, sensitive.
Description of drawings
Fig. 1 is for the present invention is based on fiber optic conduction infrared flame detector optical detection cellular construction figure;
Fig. 2 surveys terminal connection block diagram for the present invention is based on the fiber optic conduction infrared flame detector.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.
Accompanying drawing 1 provides the concrete structure of optical detection unit, comprise optical detection unit housings A, len B, optical filter C, optics collecting system D and optical fiber interface E1, this optical detection unit housings A is half elliptic, its interior end is equipped with len B, is the input end of optical detection unit; Its other end is equipped with optical fiber interface E1, is the output terminal of optical detection unit; Optical filter C and optics collecting system D are installed in the middle of len B and the optical fiber interface E1;
Accompanying drawing 2 provides the concrete structure of surveying terminal, comprise optical fiber interface E2, infrared sensor F, signal processor G, operation processing unit H, output control unit I, the output terminal of optical fiber interface E2 connects the input end of infrared sensor F, signal processor G, operation processing unit H and output control unit I successively, and the output terminal of output control unit I connects fire alarm indicating member J and indicating fault unit K respectively; Sensitivity is provided with unit L concatenation operation processing unit H;
The Optical Fiber Transmission unit comprises the optical cable that has sheath, and its input end connects the output terminal of optical detection unit, and its output terminal connects the input end of surveying terminal.
Claims (2)
1. one kind based on the fiber optic conduction infrared flame detector, it is characterized in that: its structure of this controller comprises optical detection unit, Optical Fiber Transmission unit and surveys terminal that the optical detection unit connects the Optical Fiber Transmission unit successively and surveys terminal;
Described optical detection unit comprises optical detection unit housings A, len B, optical filter C, optics collecting system D and optical fiber interface E1, this optical detection unit housings A is half elliptic, its interior end is equipped with len B, is the input end of optical detection unit; Its other end is equipped with optical fiber interface E1, is the output terminal of optical detection unit; Optical filter C and optics collecting system D are installed in the middle of len B and the optical fiber interface E1;
Described Optical Fiber Transmission unit comprises the optical cable that has sheath, and its input end connects the output terminal of optical detection unit, and its output terminal connects the input end of surveying terminal;
Described detection terminal comprises optical fiber interface E2, infrared sensor F, signal processor G, operation processing unit H, output control unit I, the output terminal of optical fiber interface E2 connects the input end of infrared sensor F, signal processor G, operation processing unit H and output control unit I successively, and the output terminal of output control unit I connects fire alarm indicating member J and indicating fault unit K respectively; Sensitivity is provided with unit L concatenation operation processing unit.
2. control method based on the fiber optic conduction infrared flame detector, it is characterized in that: this control method step is as follows:
Step 1: the detecting band electromagnetic wave by Optical Fiber Transmission unit transmission is transferred to infrared sensing device F through optical fiber interface E1 and carries out opto-electronic conversion;
Step 2: the voltage signal after the conversion of infrared sensing device is transferred to signal processor unit G and carries out the processing of filtering amplifying signal;
Step 3: the voltage signal that the on-the-spot detecting band electromagnetic wave of the reflection after signal processor unit G handles changes is transferred to operation processing unit H, finish A/D conversion, signals collecting and the calculation process process of voltage signal by operation processing unit H, judged whether that anomalous event takes place, if there is abnormal time to take place, operation processing unit H then controls output control unit I, drive fire alarm indicating member J or indicating fault unit K, output fire alarm or failure indication information;
Step 4: by artificial modification sensitivity the configuration information of unit L is set, operation processing unit H can regulate the warning sensitivity of detector automatically.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010122661 CN101807336A (en) | 2010-03-12 | 2010-03-12 | Infrared flame detector based on optical fiber conduction and control method |
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| CN 201010122661 CN101807336A (en) | 2010-03-12 | 2010-03-12 | Infrared flame detector based on optical fiber conduction and control method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471712A (en) * | 2012-06-05 | 2013-12-25 | 通用电气公司 | Ultra-violet flame detector with high temperature remote sensing element |
| CN106969839A (en) * | 2017-03-29 | 2017-07-21 | 国网山东省电力公司菏泽供电公司 | For the infrared detector system being scanned to infrared conduction fiber outlet array of terminals |
| US9773584B2 (en) | 2014-11-24 | 2017-09-26 | General Electric Company | Triaxial mineral insulated cable in flame sensing applications |
| CN109916518A (en) * | 2019-03-18 | 2019-06-21 | 杜峰斌 | A kind of smoking detection device, system and method |
| US10392959B2 (en) | 2012-06-05 | 2019-08-27 | General Electric Company | High temperature flame sensor |
| CN113834586A (en) * | 2021-09-26 | 2021-12-24 | 中国兵器装备集团上海电控研究所 | Flame detector with mirror surface anti-dewing function |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992010705A1 (en) * | 1990-12-13 | 1992-06-25 | Allied-Signal Inc. | Flame detector |
| CN1719481A (en) * | 2005-07-22 | 2006-01-11 | 公安部沈阳消防研究所 | Bi wave band infra red flame detector and its detecting method |
-
2010
- 2010-03-12 CN CN 201010122661 patent/CN101807336A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992010705A1 (en) * | 1990-12-13 | 1992-06-25 | Allied-Signal Inc. | Flame detector |
| CN1719481A (en) * | 2005-07-22 | 2006-01-11 | 公安部沈阳消防研究所 | Bi wave band infra red flame detector and its detecting method |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471712A (en) * | 2012-06-05 | 2013-12-25 | 通用电气公司 | Ultra-violet flame detector with high temperature remote sensing element |
| US9435690B2 (en) | 2012-06-05 | 2016-09-06 | General Electric Company | Ultra-violet flame detector with high temperature remote sensing element |
| CN110057445A (en) * | 2012-06-05 | 2019-07-26 | 通用电气公司 | Ultraviolet flame detector with high temperature remote sense element |
| US10392959B2 (en) | 2012-06-05 | 2019-08-27 | General Electric Company | High temperature flame sensor |
| CN110057445B (en) * | 2012-06-05 | 2022-04-08 | 通用电气公司 | Ultraviolet flame detector with high temperature remote sensing element |
| US9773584B2 (en) | 2014-11-24 | 2017-09-26 | General Electric Company | Triaxial mineral insulated cable in flame sensing applications |
| US10361013B2 (en) | 2014-11-24 | 2019-07-23 | General Electric Company | Triaxial mineral insulated cable in flame sensing applications |
| CN106969839A (en) * | 2017-03-29 | 2017-07-21 | 国网山东省电力公司菏泽供电公司 | For the infrared detector system being scanned to infrared conduction fiber outlet array of terminals |
| CN109916518A (en) * | 2019-03-18 | 2019-06-21 | 杜峰斌 | A kind of smoking detection device, system and method |
| CN113834586A (en) * | 2021-09-26 | 2021-12-24 | 中国兵器装备集团上海电控研究所 | Flame detector with mirror surface anti-dewing function |
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Open date: 20100818 |