CN106169218B - Fire locating method based on infrared thermal imaging and visible images technology - Google Patents
Fire locating method based on infrared thermal imaging and visible images technology Download PDFInfo
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- CN106169218B CN106169218B CN201510570764.9A CN201510570764A CN106169218B CN 106169218 B CN106169218 B CN 106169218B CN 201510570764 A CN201510570764 A CN 201510570764A CN 106169218 B CN106169218 B CN 106169218B
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Abstract
The fire locating method based on infrared thermal imaging and visible images technology that the invention discloses a kind of, comprising the following steps: 1) receive pre-warning signal；2) starting motor carries out infrared thermal imaging and Vis scan, if going to step 3) without fire signal, if there is fire signal to go to step 4)；3) it resets, waits next pre-warning signal；4) driving motor compensates, so that infrared thermal imaging maximum temperature point is placed in the middle, realizes precise positioning.Compared with prior art, the present invention carries out fire locating to fire water monitor using infrared thermal imaging technique, since infrared thermal imaging technique is scanned in a manner of the battle array of face, its location efficiency is high, speed is fast, by the utilization of Visual image processing technology, can black-white-gray to maximum temperature point and its surrounding pixel point or three primary colors feature match, if matched with fire model, it is determined that it is fire source point.
Description
Technical field
The fire locating method based on infrared thermal imaging and visible images technology that the present invention relates to a kind of belongs to fire-fighting neck
Domain.
Background technique
Infrared thermal imaging uses the infrared ray specific band signal of photoelectric technology detection object heat radiation, which is converted
At the image and figure differentiated for human vision, and temperature value can be further calculated out.Infrared thermal imaging technique makes the mankind
Dysopia is surmounted, thus one can see that the temperature distribution state of body surface.
Infrared thermal imaging technique wide range of applications, and have in terms of detecting forest fire very high using valence
Value.Such as in the forest of large area, fire is often to be caused by unconspicuous hidden fire.This is the root of destructive forest fire,
With existing commonsense method, it is difficult to find this recessive fire symptom of a trend.However gone on patrol with aircraft, using infrared thermal imager, then
It can fast and effeciently find these hidden fire, fire is eliminated initial.Forestry in Canada institute begun to early in 1975 into
Row forest fire protection test, checks the not yet potential fire source in ignition ground from aircraft, and Canadian Forest research center utilizes helicopter
Using AGA750 Portable thermal imager, 15 hidden fire are found in a fire season.Spontaneous combustion often occurs for cereal silo
Phenomenon, often the time is long, the oncoming force is violent for this dieseling, loss is big.General using its silo of thermometer measure temperature at present
Variation is taken precautions against.Place and the range that these fire can be accurately determined using thermal imaging system are accomplished early to know early prevention, early be flutterred
It goes out.Convenient and simple using thermal imaging system, speed is fast, puts out in time.
But application of the infrared thermal imaging technique in fire water monitor fire locating has not been reported.
It is infrared Same Scene more comprehensively and accurately to be described with visual image fusion technology, utilize visible light figure
The characteristics of black-white-gray or three primary colors of picture shake fire source carries out establishing model, is then matched, can more it is accurate really
Determine whether maximum temperature point is fire source point.
It is combined currently, fire water monitor fire locating generallys use red single-point type, ultraviolet probe or the outer combined probe of purple
Narrow slit technology is positioned, and cost is relatively low for this technology infrared probe, but long, the low efficiency that is scanned the time to environment space,
Position error is big, for example, one kind disclosed in Chinese patent 201210094849 automatically tracks positioning jet stream extinguishing device, China is specially
A kind of infrared guidance fire water monitor disclosed in benefit 201310734137.5.Jin Wei invent a kind of fire monitor of CN101745193A and its
The quickly method of positioning fire source.White vase invention CN201210094849 automatically tracks positioning jet stream extinguishing device.
What Chinese patent 201010243423 was said is to carry out scanning between determining entirely using a single-point type pyroelectric sensor surveying
Temperature, the temperature for comparing the total space compare data and return to maximum temperature point, realize positioning.Its sensor used is released for single-point type heat
Electric transducer, it is different from the infrared thermal imaging sensor that the present invention uses, dynamic tracing can not achieve to maximum temperature point.
Summary of the invention
It is a kind of based on infrared thermal imaging and visible light figure the invention aims to provide for the problems of the prior art
As the fire locating method of technology.
In order to achieve the above object, the technical scheme is that a kind of be based on infrared thermal imaging and visible images skill
The fire locating method of art, comprising the following steps:
1) pre-warning signal is received；
2) starting motor carries out infrared thermal imaging and Vis scan, if going to step 3) without fire signal, if there is fire
Calamity signal goes to step 4)；
3) it resets, waits next pre-warning signal；
4) driving motor compensates, so that infrared thermal imaging maximum temperature point is placed in the middle, realizes precise positioning.
Further, scanning process in step 2 are as follows:
A) start motor vertical small change point, stop；
B) start and lift 1 ° ~ 50 ° on motor vertical, stop；
C) starting horizontal motor is rotated to limit, is stopped；
D) start and lift 50 ° ~ 90 ° on motor vertical, stop；
E) starting horizontal motor is reversely rotated to limit, is stopped；
Scanning is completed after above step 2 ~ 4 weeks rotate horizontally.
Further, using visible light to the black-white-gray or three primary colors of infrared thermal imaging maximum temperature point and its surrounding pixel point
Variation Features match with fire test model, then to there is fire signal, otherwise without fire signal.
Further, the pre-warning signal comes from itself ultraviolet early warning or fire automatic alarm system, image-type fire
The outer links signals such as smoke detector, line style light beam smoke detector and artificial Fire Alarm Button.
Compared with prior art, the present invention carries out fire locating to fire water monitor using infrared thermal imaging technique, due to red
Outer thermal imaging is scanned in a manner of the battle array of face, and location efficiency is high, and speed is fast, passes through Visual image processing technology
Utilization, can black-white-gray to maximum temperature point and its surrounding pixel point or three primary colors feature match, and if fire
Model matches, it is determined that it is fire source point.
Detailed description of the invention
Fig. 1 is logic diagram of the invention.
Specific embodiment
The present invention will be further described below in conjunction with the embodiments.
Embodiment 1
Receive fire alarm signal, carry out all standing scanning, starting motor vertical small change point (with it is most right under most be zero
Point), stop；Start and lift 1 ° ~ 50 ° on motor vertical, stops；Starting horizontal motor is turned right to limit, is stopped；Start motor vertical
Upper 50 ° ~ 90 ° of lift, stops；Starting horizontal motor turns left to limit, stops；When all standing scans, maximum temperature point meets fire
Condition, starting motor compensates, so that infrared thermal imaging maximum temperature point is placed in the middle, realizes positioning.
Embodiment 2
Receive fire alarm signal, carry out all standing scanning, starting motor vertical small change point (with it is most right under most be zero
Point), stop；Start and lift 1 ° ~ 50 ° on motor vertical, stops；Starting horizontal motor is turned right to limit, is stopped；Start motor vertical
Upper 50 ° ~ 90 ° of lift, stops；Starting horizontal motor turns left to limit, stops；When all standing scans, maximum temperature point is discontented with final firing
Calamity condition, starting motor are resetted.
Embodiment 3
Changed using black-white-gray or three primary colors of the visible light to infrared thermal imaging maximum temperature point and its surrounding pixel point special
Point matches with fire test model, then to there is fire signal, otherwise without fire signal.
All simple deformations made in the case where not departing from core of the present invention or modification each fall within protection of the invention
Range.
Claims (3)
1. a kind of fire locating method based on infrared thermal imaging and visible images technology, which is characterized in that including following step
It is rapid:
1) pre-warning signal is received；
2) starting motor carries out infrared thermal imaging and Vis scan, using visible light to infrared thermal imaging maximum temperature point and its
The black-white-gray or three primary colors Variation Features of surrounding pixel point, match with fire test model, then to there is fire signal, otherwise do not have
There is fire signal；If going to step 3) without fire signal, if there is fire signal to go to step 4);
3) it resets, waits next pre-warning signal；
4) driving motor compensates, so that infrared thermal imaging maximum temperature point is placed in the middle, realizes precise positioning；Scanning in step 2)
Process are as follows:
A) start motor vertical small change point, stop；
B) start and lift 1 ° 50 ° on motor vertical, stop；
C) starting horizontal motor is rotated to limit, is stopped；
D) start and lift 50 ° 90 ° on motor vertical, stop；
E) starting horizontal motor is reversely rotated to limit, is stopped；
Scanning is completed after above step 24 weeks rotate horizontally.
2. a kind of fire locating method based on infrared thermal imaging and visible images technology according to claim 1,
It is characterized in that, the pre-warning signal comes from itself ultraviolet early warning, image-type fire smoke detector, line style light beam smoke detector
And artificial Fire Alarm Button.
3. a kind of fire locating method based on infrared thermal imaging and visible images technology according to claim 2,
It is characterized in that, the pre-warning signal comes from fire automatic alarm system.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029736A (en) * | 2018-08-22 | 2018-12-18 | 王永福 | A kind of compound flame detector |
| CN110491066A (en) * | 2019-08-21 | 2019-11-22 | 深圳云感物联网科技有限公司 | Forest fire protection monitoring and warning system based on infrared thermal imaging |
| CN111739252B (en) * | 2020-07-03 | 2022-03-01 | 徐州鑫科机器人有限公司 | Fire monitoring and automatic fire extinguishing system and working method thereof |
| CN113345194B (en) * | 2021-04-29 | 2022-08-16 | 浙江大华技术股份有限公司 | Forest fire early warning method, system, electronic device and storage medium |
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