CN201270076Y - Ultra-violet and infrared composite flame detecting alarm having optical self-checking function - Google Patents
Ultra-violet and infrared composite flame detecting alarm having optical self-checking function Download PDFInfo
- Publication number
- CN201270076Y CN201270076Y CNU2008202186467U CN200820218646U CN201270076Y CN 201270076 Y CN201270076 Y CN 201270076Y CN U2008202186467 U CNU2008202186467 U CN U2008202186467U CN 200820218646 U CN200820218646 U CN 200820218646U CN 201270076 Y CN201270076 Y CN 201270076Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- detector
- ultraviolet
- infrared
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 20
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000000605 extraction Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 9
- 238000005070 sampling Methods 0.000 claims abstract description 8
- 230000004224 protection Effects 0.000 claims description 14
- 230000006750 UV protection Effects 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 9
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000001629 suppression Effects 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 8
- 239000000523 sample Substances 0.000 description 21
- 238000000825 ultraviolet detection Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 3
- 244000249914 Hemigraphis reptans Species 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 101100190529 Arabidopsis thaliana PIN7 gene Proteins 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 102000005591 NIMA-Interacting Peptidylprolyl Isomerase Human genes 0.000 description 1
- 108010059419 NIMA-Interacting Peptidylprolyl Isomerase Proteins 0.000 description 1
- 101150087393 PIN3 gene Proteins 0.000 description 1
- 102000007315 Telomeric Repeat Binding Protein 1 Human genes 0.000 description 1
- 108010033711 Telomeric Repeat Binding Protein 1 Proteins 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 229940074869 marquis Drugs 0.000 description 1
- VBUNOIXRZNJNAD-UHFFFAOYSA-N ponazuril Chemical compound CC1=CC(N2C(N(C)C(=O)NC2=O)=O)=CC=C1OC1=CC=C(S(=O)(=O)C(F)(F)F)C=C1 VBUNOIXRZNJNAD-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
Images
Landscapes
- Fire-Detection Mechanisms (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
本实用新型涉及带有光学自检功能的紫外红外复合火焰探测报警器，特点是红外发光管与带通放大电路相连；紫外发光管和紫外光电探测管与智能紫外驱动及信号采样电路相连；在探测器电源转换电路输出端连接一个紫外提取及转换电路，在智能紫外驱动及信号采样电路输出端连接探测器数据主处理电路；在探测器外部信号输入检测及自检红外LED驱动电路和探测器数据主处理电路输出端连接带通放大电路；在探测器数据主处理电路和探测器电源转换电路输出端连接探测器隔离电源485通讯电路、探测器4－20mA信号输出电路和探测器继电器输出电路。本实用新型优点是通过紫外红外混合判断火焰信号，降低误报率并提高探测器对使用环境的适应性达到较高智能程度。
The utility model relates to an ultraviolet-infrared composite flame detection alarm with optical self-checking function, which is characterized in that an infrared light-emitting tube is connected with a band-pass amplifier circuit; an ultraviolet light-emitting tube and an ultraviolet photoelectric detection tube are connected with an intelligent ultraviolet driving and signal sampling circuit; The output end of the detector power conversion circuit is connected to an ultraviolet extraction and conversion circuit, and the output end of the intelligent ultraviolet drive and signal sampling circuit is connected to the detector data main processing circuit; The output end of the data main processing circuit is connected to the band-pass amplifier circuit; the output end of the detector data main processing circuit and the detector power conversion circuit is connected to the detector isolated power supply 485 communication circuit, the detector 4-20mA signal output circuit and the detector relay output circuit . The utility model has the advantages of judging the flame signal through the combination of ultraviolet and infrared, reducing the false alarm rate and improving the adaptability of the detector to the use environment to achieve a higher degree of intelligence.
Description
Technical field
The utility model belongs to the automatic fire detection-alarm field, particularly a kind of optical self-checking function ultra-violet and infrared composite flame detecting alarm that has.
Background technology
In early days; use plain type ultraviolet or single band infrared flame detector means in the world as protection large space and hypogee security against fire; but because it is subjected to the restriction of technical merit and technological level, relatively poor to the resistivity of environmental interference in actual applications, easily produce false alarm.In recent years, somebody's research and utilization CCD imaging combustion technology was surveyed flame both at home and abroad, because the fundamental research that corresponding incipient fire image is surveyed is still insufficient, had limited the development of fire image technology to a certain extent.Therefore, countries such as Japan, Switzerland successively develop and successfully use bi wave band infra red flame detector to be used for the security against fire protection of large space and hypogee in recent years.It can further suppress the interference of environmental interference signal, improves the reliability of detector, becomes to protect last word underground and the volumed space building security against fire.
Develop rapidly along with China's economic construction, the quantity of volumed space building and hypogee constantly increases, as large-scale place of public amusement, bulk storage plant, large-scale country fair, hangar, garage, oil depot, waiting hall and marquis's machine hall, subterranean tunnel, subway station road, underground large parking lot and subterranean commercial area etc.Because this type of building interior often height of a house height, span is big, it is bigger that the cigarette diffusion of fire initial stage is influenced by air-conditioning that building interior installs and ventilating system etc., the place personnel that have are intensive, and inflammable thing are many, and disaster hidden-trouble is many, and this type of building fire spreads rapidly, the generation flue gas toxity is big, and evacuating personnel is taken refuge and reinforced the difficulty of putting out a fire to save life and property, in case breaking out of fire often causes very big economic loss and abominable social influence, therefore, underground and volumed space building has become one of key object of fire-fighting defendance.
The singularity of underground and volumed space building, common some type sense cigarette, temperature-sensing fire detecting warning system can't be gathered the cigarette temperature change information that fire sends rapidly, thereby are difficult to the requirement satisfying early detection and forecast this type of building fire.Use plain type ultraviolet, single band infrared flame detector as the means of protecting volumed space building in the world in early days, but because it is subjected to the restriction of technical merit and technological level, relatively poor to the inhibition ability of environmental interference in actual applications, be easy to generate false alarm.
The utility model content
Problem at the prior art existence, the utility model provides a kind of ultra-violet and infrared composite flame detecting alarm that has optical self-checking function, comprehensively adopts two information sensing technology of flame ultraviolet and infrared spectrum model, two kinds of wave band optimisation techniques and comprehensive fire identification software algorithm.
The ultra-violet and infrared composite flame detecting alarm that has optical self-checking function of the present utility model comprises ultraviolet protection eyeglass, infrared protection eyeglass, the logical amplifying circuit of band, data owner treatment circuit, intelligent UV driven and signal sample circuit, controller power source change-over circuit, controller relay output circuit, controller 4-20mA signal output apparatus, ultraviolet extraction and change-over circuit, ultra-violet light-emitting pipe, infraluminescence pipe, ultraviolet photoelectric detection pipe, controller insulating power supply 485 communicating circuits, outer reflector and structure stationary installation; 0 back installation reflector at ultraviolet protection eyeglass and infrared protection eyeglass; The infraluminescence pipe links to each other with the logical amplifying circuit of band; The ultra-violet light-emitting pipe links to each other with intelligent UV driven and signal sample circuit with the ultraviolet photoelectric detection pipe; Connect a ultraviolet at detector power-switching circuit output terminal and extract and change-over circuit, at the output terminal connection detector data master treatment circuit of intelligent UV driven and signal sample circuit; The logical amplifying circuit of output terminal connecting band at detector external signal input detection and detector self check infrared LED driving circuit and detector data master treatment circuit; Output terminal at detector data master treatment circuit and detector power-switching circuit is connected detector insulating power supply 485 communicating circuits, detector 4-20mA signal output apparatus and detector relay output circuit.
Detector self check flow process of the present utility model: pass through timer internal, cumulative time reaches when preestablishing the time, detector detects the Ultraviolet sensor signal and whether has flare up fire, if no flare up fire then starts the ultra-violet light-emitting pipe, whether and it is normal to detect Ultraviolet sensor, normally enter the detection infrared sensor, the undesired ultraviolet detector fault of promptly reporting; Whether the infrared sensor of detector detection simultaneously signal exists flare up fire, and whether if no flare up fire then starts the infraluminescence pipe, and it is normal to detect infrared sensor, normally then enters fire alarm and judges flow process, the undesired infrared eye fault of promptly reporting.
Shell of the present utility model comprises bonnet, protecgulum, housing, front panel, reflector, ultraviolet protection eyeglass, ultraviolet detection plate, infrared acquisition plate and infrared protection eyeglass; infrared acquisition plate, system and ultraviolet detection plate are fixed on the front panel; detector output interface plate is fixed on the back cover portion of housing, and front panel is connected by signal wire with back cover portion.
Intelligent UV driven of the present utility model and signal sample circuit are by adopting 8 single-chip microcomputer U12 as UV driven, import double output booster transformer T1 by the list that PIN7 control triode N1 drives, obtain the required high pressure of ultraviolet light fulgurite by fast recovery diode and resistance capacitance coupling, adopt pulsed drive; Carry out communication by PIN4-63 pin and U8 primary processor, the UV driven mode different according to the different signal controlling of primary processor.Ultraviolet photoelectric detection pipe and ultra-violet light-emitting pipe adopt the step-up transformer power supply.
Band of the present invention leads to amplifying circuit, mainly is divided into infrared signal extraction, infrared sensor amplification, gain adjustment, threshold voltage adjustment and signaling conversion circuit.It is that power supply passes through R1 ground connection again by the PIN3 that infrared sensor U1 is connected to U5 that infrared signal is extracted circuit, the PIN1 of U5 and PIN2 short circuit, and adopt dynamic threshold technology; U5B, U6A, U6C constitute the infrared sensor amplifying circuit, and adopt the digital zooming technology; 1 road of U6C and two-way digital regulation resistance U7 constitutes gain adjustment circuit; 0 road of U6B and two-way digital regulation resistance U7 constitutes threshold voltage and adjusts circuit; Form signaling conversion circuit by D3, R6, D4, R38, R14, C45, E6.
Detector relay output circuit of the present utility model adopts the output of passive relay signal; Detector 4-20mA signal output apparatus is by the pulse-width signal output of single-chip microcomputer; Undesired signal when detector insulating power supply 485 communicating circuits adopt optocoupler, power isolation module, 485 communication chips and 3 moments to suppress diode inhibition external communication on the signal wire.
The utility model effect
1. adopt the ultraviolet light fulgurite of intelligence to drive, adopt 8 single-chip microcomputers to carry out independent pulsed drive, can require to carry out the driving of different configuration modes according to different detection times, having simplified original ultraviolet light fulgurite needs a plurality of chips to coordinate to drive pulsewidth, adopts the working method that exchanges continued power then to greatly reduce power consumption relatively.Designed step-up transformer, realized adopting a transformer that the power supply of ultraviolet photoelectric detection pipe and ultra-violet light-emitting pipe is provided, by cooperating the multiple metering of primary processor, sample circuit in conjunction with multichannel unlike signal grade, can count the signal of different electric pressures, changing in the past, ultraviolet detection just carries out pulse signal number statistics, the not present situation of distinguishing at level of signal.
2. adopt the flame frequency of digital zooming technology and dynamic threshold to extract circuit, detector is with logical the amplification at infrared sensor, and, be adjusted into detector by gain amplifier and carry out existing in the detection process flare up fire detection of closely big fire that solution is provided by adopting digital regulation resistance to carry out the gain amplifier adjustment; Detector has adopted digital regulation resistance to carry out the flame frequency signal in conjunction with amplifier and extracted, and has guaranteed detector under varying environment, and is during background drift, effective all the time to the extraction of flare up fire.
3. adopt ultra-violet light-emitting pipe and infraluminescence pipe; in conjunction with reflector through special processing; constituted the detector optical perfection; guaranteed that detector is when possessing the flame of detection function; the function that has possessed detector internal sensor failure detection has again also realized simultaneously the pollution detection at detector protection eyeglass.
4. adopt the output of passive relay signal, RS485 industrial communication interface, 3 kinds of communication modes of 4-20MA signal output, the basic most on the market controller of compatibility has good compatible performance, adopts the flame-proof type structure, is applicable to various industrial sites.
Description of drawings
Fig. 1 is the ultra-violet and infrared composite flame detecting alarm complete machine structure synoptic diagram that has optical self-checking function;
Fig. 2 is the ultra-violet and infrared composite flame detecting alarm system architecture synoptic diagram that has optical self-checking function;
Fig. 3 is the ultra-violet and infrared composite flame detecting alarm design fundamentals block diagram that has optical self-checking function;
Fig. 4 is the system flowchart that has the ultra-violet and infrared composite flame detecting alarm of optical self-checking function;
Fig. 5 is the infrared acquisition flow chart of data processing figure of band by the ultra-violet and infrared composite flame detecting alarm of optical self-checking function;
Fig. 6 is a circuit diagram fixing on the infrared acquisition plate, wherein,
(a) be the logical amplification circuit diagram of detector band;
(b) detect and self check infrared LED driving circuit figure for the input of detector external signal;
(c) be detector dual-colored LED driving circuit figure;
Fig. 7 is a circuit diagram fixing on system and the ultraviolet detection plate, wherein,
(a) be the detector power-switching circuit;
(b) be detector data master treatment circuit;
(c) be intelligent UV driven and signal sample circuit;
(d) be Ultraviolet sensor self check driving circuit;
(e) extract and change-over circuit for UV signal;
Fig. 8 is a circuit diagram fixing on the detector output interface plate, wherein,
(a) be detector electric power polarity change-over circuit and power supply anti-clutter circuit;
(b) be detector 4-20MA signal output apparatus;
(c) be detector insulating power supply circuit;
(d) be controller insulating power supply 485 communicating circuits;
(e) be detector relay output circuit;
1 is bonnet among the figure, and 2 is housing, and 3 is protecgulum, and 4 is front panel, and 5 is the ultraviolet protection eyeglass, and 6 is the ultraviolet detection plate, and 7 is the infrared acquisition plate, and 8 is infrared protection eyeglass, 9 reflectors, 10 shells, 11 supports, 12 detector output interface plates.
Embodiment
As shown in Figure 1; shell comprises bonnet, protecgulum, housing, front panel, ultraviolet protection eyeglass, ultraviolet detection plate, reflector, infrared acquisition plate and infrared protection eyeglass; infrared acquisition plate, system and ultraviolet detection plate are fixed on the front panel; detector output interface plate is fixed on the back cover portion of housing, and front panel is connected by signal wire with back cover portion.Wherein infrared protection eyeglass requires to adopt the transmitance to the infrared light of 1-14 μ m to be higher than 85% material, and that environmental suitability requires is corrosion-resistant, wiping, damp and hot and high low temperature.The ultraviolet protection eyeglass require to adopt the transmitance to the ultraviolet light of 200-1000nm to be higher than 85% material, and that environmental suitability requires is corrosion-resistant, wiping, damp and hot and high low temperature.
As shown in Figures 2 and 3, the detector power-switching circuit obtains different circuit module required voltages by power source conversion, UV signal extract and change-over circuit+the 12v input end links to each other with detector power-switching circuit+12v output terminal, the 3.3v output terminal of UV signal extraction and change-over circuit and intelligent UV driven and signal sample circuit+the 3.3v input end links to each other; The output terminal of intelligence UV driven and signal sample circuit links to each other with the input end of detector data master treatment circuit; The input end of detector dual-colored LED driving circuit links to each other with the 24v output terminal of detector power-switching circuit, and detector dual-colored LED driving circuit output terminal detects with the input of detector external signal respectively and the input end of self check infrared LED driving circuit and Ultraviolet sensor self check driving circuit links to each other; The input of detector external signal detects and the output terminal of self check infrared LED driving circuit links to each other with the input end of the logical amplifying circuit of band; The output terminal of the logical amplifying circuit of band links to each other with the input end of detector data master treatment circuit, and the input end of detector electric power polarity change-over circuit and power supply anti-clutter circuit links to each other with detector power-switching circuit+24v output terminal; The output terminal of detector data master treatment circuit links to each other with controller 4-20mA signal output apparatus, controller 4-20mA signal output apparatus links to each other with detector power-switching circuit+24v output terminal, the input end of detector relay output circuit links to each other with detector power-switching circuit+12v output terminal with the output terminal of detector data master treatment circuit respectively, and physical circuit connects shown in Fig. 6,7,8.
Logical amplifying circuit output infra red flame spoke value signal of band and infrared frequency signal are to detector data master treatment circuit; The input of detector external signal detects and self check infrared LED driving circuit, detect outside self-test signal and output to detector data master treatment circuit, the infrared self check drive signal of receiving system plate drives self check infrared LED driving circuit simultaneously, detector dual-colored LED driving circuit, the dual-colored LED control signal on the receiving system plate drives the dual-colored LED driving circuit.UV driven and signal sample circuit, by separate processor output boostering transformer drive signal, the adjustment signal of pick-up probe data owner treatment circuit and according to the different drive signal of this signal output; UV signal is extracted and change-over circuit, handles driving the ultraviolet light fulgurite by voltage transformation, and outputs to detector data master treatment circuit by signal extraction and conversion acquisition ultraviolet flame signal; Ultraviolet sensor self check driving circuit, the self check control signal of pick-up probe data owner treatment circuit drives the ultra-violet light-emitting pipe; Detector data master treatment circuit is gathered infrared spoke value signal, infrared frequency signal, ultraviolet data and other input signals, and the line data of going forward side by side is handled.Detector electric power polarity change-over circuit and power supply anti-clutter circuit provide non-polar direct supply interface; The pwm signal of controller 4-20mA signal output apparatus pick-up probe data owner treatment circuit output, and convert the 4-20mA output circuit of standard to; Detector relay output circuit, the drive signal that the output of pick-up probe data owner treatment circuit is different, and the corresponding relay signal of output.
Infrared sensor, infraluminescence pipe, the logical amplifying circuit of band, detector external signal input detection and self check infrared LED driving circuit and detector dual-colored LED driving circuit are fixed on the infrared detection plate; UV driven and signal sample circuit, data owner treatment circuit, detector power-switching circuit, UV signal extract circuit and Ultraviolet sensor self check driving circuit all is fixed on system and the ultraviolet detection plate; Detector electric power polarity change-over circuit and power supply anti-clutter circuit, detector insulating power supply 485 communicating circuits, detector 4-20mA signal output apparatus and detector relay output circuit are all on detector signal output interface plate.The infrared acquisition plate is connected by contact pin with the signal transmission of system and ultraviolet detection plate, adopt between plate and be bolted on the front panel, system and ultraviolet detection plate are connected by flexible cord with the signal transmission of signal output interface plate, and detector signal output interface plate is fixed on the back cover portion of detector.Wherein detector is by being fixed on detector signal output interface plate wiring on the bonnet, and receives in the control system by explosion suppression interface.
Ultraviolet sensor self check driving circuit drives self check ultra-violet light-emitting pipe and sends ultraviolet light, by getting to back reflection on the reflector behind the ultraviolet protection eyeglass, enter Ultraviolet sensor by the ultraviolet protection eyeglass once more, by gathering the ultra-violet light-emitting pipe modulating frequency that the contrast of current probe value sets in advance and the initial probe parameter of sensor, judge whether sensor is in normal operating conditions, and can infer whether needs clean or change the ultraviolet protection eyeglass according to the frequency change amplitude of detectable signal; Detector external signal input simultaneously detects and self check infrared LED driving circuit driving self check infrared LED sends infrared light; by getting to back reflection on the reflector behind the infrared protection eyeglass; enter infrared sensor by infrared protection eyeglass once more; by gathering the infrared LED modulating frequency that the contrast of current probe value sets in advance and the initial probe parameter of sensor; judge whether sensor is in normal operating conditions, and can infer whether needs clean or change infrared protection eyeglass according to the amplitude of variation of probe value.
Detector self check flow process: pass through timer internal, cumulative time reaches when preestablishing the time, detector detects the Ultraviolet sensor signal and whether has flare up fire, if no flare up fire then starts the ultra-violet light-emitting pipe, whether and it is normal to detect Ultraviolet sensor, normally then enter the detection infrared sensor, the undesired ultraviolet detector fault of promptly reporting; Whether the infrared sensor of detector detection simultaneously signal exists flare up fire, and whether if no flare up fire then starts the infraluminescence pipe, and it is normal to detect infrared sensor, normally then enters fire alarm and judges flow process, the undesired infrared eye fault of promptly reporting.
1. adopt alarm as shown in Figure 1, detect, carry out infrared detection according to following steps according to flow implementation shown in Figure 4:
Suppose that the infrared response fixed value is Cb, passage of flame fixedly base value is Ca, and passage of flame compensation base value is Ca
1, the current infrared AD sample magnitude of passage of flame is A
1, the infrared amplitude of passage of flame is with respect to fixing base value added value Δ A
0=A
1-Cb, the infrared amplitude of passage of flame is with respect to compensation base value added value Δ A
1=A
1-Cb, the infrared sample frequency data of passage of flame are followed successively by Fa
0(current), Fa
1, Fa
2, Fa
3(3 times) current 4 the infrared frequency data mean values of passage of flame are Fap, and N is a natural number, and size of data is set according to the signal ratio of sensor.
Work as A
i-Ca〉Cb, satisfy this condition 4 times and judge directly that then infrared amplitude satisfies the fire alarm condition continuously.And skip based on the compensation base value determining program line flicker frequency of going forward side by side and judge; Work as A
i-Ca＜Cb then directly carries out judging based on the compensation base value.
Work as Al-Ca
1Cb and satisfy this condition 4 times and judge directly that then infrared amplitude satisfies the fire alarm condition continuously.
The step 4 flicker frequency is judged
4≤Fap≤20, and Fa
0(current), Fa
1, Fa
2, Fa
3(3 times) wherein have at least 2 to satisfy 4≤Fa (i)≤20 i=0,1,2,3 judgements are satisfied frequency and are satisfied the fire alarm condition.Otherwise, then do not satisfy the fire alarm condition.
2. as shown in Figure 4, carrying out ultraviolet according to following steps judges:
Suppose that the high value of ultraviolet responsive stationary is X
0, passage of flame fixedly low value is Y
0, the high value of the current ultraviolet frequencies sampling of passage of flame is Z
1, the current ultraviolet frequencies sampling of passage of flame low value is K
1,
Work as Z1-X0〉0, satisfy this condition for 4 times and judge directly that then the high value of ultraviolet satisfies the fire alarm condition, carries out next judgement continuously; Work as K1-Y0〉0, and satisfy this condition 4 times and judge directly that then the ultraviolet low value satisfies the fire alarm condition continuously, otherwise then do not report to the police.
3. the infrared compound judgement of ultraviolet
When meeting fire alarm, export infrared fire alarm, when infrared when ultraviolet meets fire alarm, output ultraviolet fire alarm, when two kinds of signals have a kind of when meeting fire alarm, when another kind is in the fire alarm alert status, match according to the reduced parameter that sets in advance, then report a fire if meet alarm condition.
4. signal output
By detector 4-20mA signal output apparatus or detector relay output circuit alerting signal being exported, is then end of run of alerting signal, is not that alerting signal then enters the detector self check.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202186467U CN201270076Y (en) | 2008-10-23 | 2008-10-23 | Ultra-violet and infrared composite flame detecting alarm having optical self-checking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202186467U CN201270076Y (en) | 2008-10-23 | 2008-10-23 | Ultra-violet and infrared composite flame detecting alarm having optical self-checking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201270076Y true CN201270076Y (en) | 2009-07-08 |
Family
ID=40842683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202186467U Expired - Lifetime CN201270076Y (en) | 2008-10-23 | 2008-10-23 | Ultra-violet and infrared composite flame detecting alarm having optical self-checking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201270076Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383075B (en) * | 2008-10-23 | 2011-03-23 | 公安部沈阳消防研究所 | Ultra-violet and infrared composite flame detecting alarm having optical self-checking function and method thereof |
| CN108028004A (en) * | 2015-09-10 | 2018-05-11 | 通用显示器公司 | Flame detector and test method |
| CN110530522A (en) * | 2019-10-16 | 2019-12-03 | 山东智邦环境工程有限公司 | A kind of dust mutually examines self-cleaning type novel spark survey meter |
| CN116386298A (en) * | 2023-03-16 | 2023-07-04 | 浙江华消科技有限公司 | Self-checking method, device and system for infrared flame detector |
| CN117912185A (en) * | 2024-03-19 | 2024-04-19 | 西安博康电子有限公司 | Infrared flame detection system and far and near flame identification method |
-
2008
- 2008-10-23 CN CNU2008202186467U patent/CN201270076Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383075B (en) * | 2008-10-23 | 2011-03-23 | 公安部沈阳消防研究所 | Ultra-violet and infrared composite flame detecting alarm having optical self-checking function and method thereof |
| CN108028004A (en) * | 2015-09-10 | 2018-05-11 | 通用显示器公司 | Flame detector and test method |
| CN108028004B (en) * | 2015-09-10 | 2020-02-18 | 通用显示器公司 | Flame detectors and test methods |
| CN110530522A (en) * | 2019-10-16 | 2019-12-03 | 山东智邦环境工程有限公司 | A kind of dust mutually examines self-cleaning type novel spark survey meter |
| CN116386298A (en) * | 2023-03-16 | 2023-07-04 | 浙江华消科技有限公司 | Self-checking method, device and system for infrared flame detector |
| CN117912185A (en) * | 2024-03-19 | 2024-04-19 | 西安博康电子有限公司 | Infrared flame detection system and far and near flame identification method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101383075B (en) | Ultra-violet and infrared composite flame detecting alarm having optical self-checking function and method thereof | |
| CN102496236B (en) | Direct-injection type flame detector with self-checking light source and flame detection method | |
| CN201270076Y (en) | Ultra-violet and infrared composite flame detecting alarm having optical self-checking function | |
| CN2932336Y (en) | Infrared and ultraviolet composite flame detector | |
| CN201781657U (en) | Street lamp control system | |
| CN1916797A (en) | Wireless intelligence type monitoring and controlling alarm system for safety, environmental protection in room | |
| CN102622849A (en) | Energy-saving warehouse safety monitoring system | |
| CN102496235B (en) | Image fire detector possessing optical integrity and method thereof | |
| CN110512987A (en) | An environment-responsive smart window system | |
| CN201699455U (en) | Intelligent sun photovoltaic supplying device | |
| CN102821525A (en) | Multifunctional emergency lamp control system and control method thereof | |
| CN100590671C (en) | Dual-band infrared flame detector and its detection method | |
| CN104123819A (en) | Fireproof and thief-proof alarming system based on single-chip microcomputer | |
| CN207123923U (en) | Intelligent concentration suction-type cable fire pole early warning device | |
| CN202454031U (en) | Self-checking light source direct flame detector | |
| CN209028769U (en) | A kind of electronic box intelligent monitoring and controlling device | |
| CN201917998U (en) | Stand-alone anti-explosion alarm for inflammable gas | |
| CN201233635Y (en) | Infrared detection device | |
| CN205281729U (en) | Household intelligent safe -guard system | |
| CN2516966Y (en) | Fire detection control equipment with sunlight and blind light identification function | |
| CN205038466U (en) | Take garage monitored control system of warning function | |
| CN205946256U (en) | Data acquisition device based on LED sign light source intelligence control system | |
| CN201765662U (en) | Automatic fire alarm and linkage system | |
| CN102568160A (en) | Independent combustible gas explosion-proof alarm | |
| CN203054506U (en) | Control system of wireless fire engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090708 Effective date of abandoning: 20081023 |