CN110174173A - Fire prevention method and system - Google Patents
Fire prevention method and system Download PDFInfo
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- CN110174173A CN110174173A CN201910441511.XA CN201910441511A CN110174173A CN 110174173 A CN110174173 A CN 110174173A CN 201910441511 A CN201910441511 A CN 201910441511A CN 110174173 A CN110174173 A CN 110174173A
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- 230000002265 prevention Effects 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000012360 testing method Methods 0.000 claims abstract description 115
- 238000001931 thermography Methods 0.000 claims abstract description 32
- 238000012806 monitoring device Methods 0.000 claims description 34
- 238000012544 monitoring process Methods 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 9
- 230000000630 rising effect Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 description 12
- 230000006870 function Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 230000006855 networking Effects 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 239000007789 gas Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/025—Interfacing a pyrometer to an external device or network; User interface
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/48—Thermography; Techniques using wholly visual means
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
- G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0092—Temperature by averaging, e.g. by scan
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- Spectroscopy & Molecular Physics (AREA)
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- Business, Economics & Management (AREA)
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- Fire-Detection Mechanisms (AREA)
Abstract
The embodiment of the invention discloses a kind of fire prevention method and systems, and the temperature value of each pixel in the test object thermal imaging of at least one thermal infrared imager acquisition is obtained with predetermined time interval；If the temperature value of any pixel point is greater than the normal temperature threshold value of the pixel in current time test object thermal imaging, using the pixel as test object extraordinary image vegetarian refreshments, and the pixel is recorded in the temperature value at current time；The temperature value of each pixel in the thermal imaging of subsequent time test object is obtained, if test object extraordinary image vegetarian refreshments is greater than the temperature value of last moment in the temperature value of subsequent time, records test object extraordinary image vegetarian refreshments in the temperature value of subsequent time；If each temperature value of the test object extraordinary image vegetarian refreshments of record ascendant trend occurs when test object fire prevention threshold value corresponding more than or equal to the pixel, alarm signal is issued.The present invention can prevent test object from reaching burning point to cause the generation of fire, and alarm is issued before there is open fire.
Description
Technical field
The present invention relates to fire prevention technical field more particularly to a kind of fire prevention methods and system.
Background technique
Currently, in fire detection prevention, it will usually use such as smoke detector, hygrosensor or image detector
Deng.However, after needing scene to have apparent smog, toxic gas or other specific gas using smoke detector, it could smoke
Fog detector, and temperature sensor needs live object to release a large amount of heat in combustion, ambient temperature is sharply
Rise, and pass to hygrosensor to form alarm, and is that figure is carried out to flue dust, the open fire etc. at scene using image detector
As automatic identification triggering alarm.In the conventional technology, most fire alarm prevents the second stage occurred in fire substantially,
There is the generation of a large amount of smog, and be close to or up to burning point with the rapid increase of mass temperature, remote hyperphysical is normal
In the case of temperature.To easily lead to serious loss of assets, the generation of the extreme cases such as the scene of fire Yi Yinfa explosion.
Summary of the invention
It is an object of the invention to be directed to the deficiency of traditional technology, a kind of fire prevention method and system are provided.
In one embodiment, fire prevention method of the invention is applied to disaster prevention system, and system includes shooting angle
Degree covering is tested at least one thermal infrared imager at scene；Method includes:
Each pixel in the test object thermal imaging of at least one thermal infrared imager acquisition is obtained with predetermined time interval
Temperature value；
If the temperature value of any pixel point is greater than the normal temperature threshold of the pixel in current time test object thermal imaging
When value, using the pixel as test object extraordinary image vegetarian refreshments, and the pixel is recorded in the temperature value at current time；
The temperature value for obtaining each pixel in the thermal imaging of subsequent time test object, if test object extraordinary image vegetarian refreshments is under
The temperature value at one moment is greater than the temperature value of last moment, then records test object extraordinary image vegetarian refreshments in the temperature of subsequent time
Value；
If there is ascendant trend until be greater than or equal to the pixel in each temperature value of the test object extraordinary image vegetarian refreshments of record
When the corresponding test object fire prevention threshold value of point, then alarm signal is issued.
It is interior over any time period to obtain detection pair in real time in one of the embodiments, under test object normal condition
As the temperature value of pixel each in thermal imaging, and by corresponding pixel points over any time period in average temperature value be set as the pixel
The normal temperature threshold value of point.
Test object is harmful influence in one of the embodiments,；
If " there is ascendant trend until being greater than or equal to the pixel in each temperature value of the harmful influence extraordinary image vegetarian refreshments of record
When corresponding test object fire prevention threshold value, then alarm signal is issued " include:
There is ascendant trend in each temperature value of the test object extraordinary image vegetarian refreshments of record, and reaches the positive room temperature of the pixel
It spends after threshold value, the temperature gap of adjacent moment is less than or equal to the first fiducial temperature, and the sum of each temperature gap is greater than or waits
When the first heating threshold value, then alarm signal is issued.
" temperature value of each pixel in the thermal imaging of subsequent time test object is obtained, if inspection in one of the embodiments,
The temperature value that object extraordinary image vegetarian refreshments is greater than last moment in the temperature value of subsequent time is surveyed, then records test object abnormal pixel
Include: after temperature value of the point in subsequent time "
If there is ascendant trend and reaches the normal temperature threshold of the pixel in the temperature of the harmful influence extraordinary image vegetarian refreshments of record
After value, the temperature gap risen in the first preset time period reaches the second heating threshold value or the corresponding environment fire of the pixel
When calamity prevents temperature threshold, then alarm signal is issued.
Test object is monitoring device in one of the embodiments,；
If " there is ascendant trend until being greater than or equal to the pixel in each temperature value of the test object extraordinary image vegetarian refreshments of record
When the corresponding fire prevention threshold value of point, then alarm signal is issued " include:
There is ascendant trend in each temperature value of the monitoring device extraordinary image vegetarian refreshments of record, and reaches the positive room temperature of the pixel
It spends threshold value to rise, the temperature gap of adjacent moment is less than or equal to the second fiducial temperature, and the sum of each temperature gap is greater than or equal to
When third heating threshold value, then alarm signal is issued.
In one of the embodiments, " if ascendant trend occurs in each temperature value of the test object extraordinary image vegetarian refreshments of record
Until then issuing alarm signal when test object fire prevention threshold value corresponding more than or equal to the pixel, including: later
If there is ascendant trend and reaches the normal temperature of the pixel in the temperature of the monitoring device extraordinary image vegetarian refreshments of record
Threshold value rises, and when the temperature gap risen in the second preset time period reaches the 4th temperature rise threshold value, then issues alarm signal.
Predetermined time interval is 1S-3S in one of the embodiments,.
In one embodiment, the present invention also provides a kind of disaster prevention systems of harmful influence, comprising: monitor terminal,
And it connects monitor terminal and shoots each thermal infrared imager that vision covering is tested scene；Monitor terminal is stored with computer journey
Sequence, monitor terminal implement fire prevention method when executing computer program.
It in one of the embodiments, further include each temperature sensing for connecting monitor terminal and being set to around tested scene
Device.
In one of the embodiments, the connection type of thermal infrared imager and monitor terminal be WIFI, bluetooth and
Any one of Zigbee or any number of combination.
A technical solution in above-mentioned technical proposal is had the following advantages and beneficial effects:
Fire prevention method of the invention and system, based on the test object thermal imaging that thermal infrared imager is got, energy
The temperature field for enough monitoring test object surface can find tested pair by the Current Temperatures of each pixel in figure in time
As each local abnormal conditions.When the temperature value of any pixel point can be then labeled as beyond the normal temperature threshold value of the pixel
Test object extraordinary image vegetarian refreshments, thereby, it is possible in following instant, record the ascendant trend of the test object extraordinary image vegetarian refreshments,
To find the local anomaly of test object to issue alarm signal in time.Various embodiments of the present invention can prevent test object from reaching
The generation that fire is caused to burning point triggers fire alarm in time before open fire to be occurred.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, letter will be made to attached drawing needed in the embodiment below
It singly introduces, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as to the present invention
The restriction of protection scope.In various figures, part is similarly comprised using similar number.
Fig. 1 shows the flow diagram of the fire prevention method of the embodiment of the present invention；
Fig. 2 shows the structural schematic diagrams of the disaster prevention system of the embodiment of the present invention.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
The component of embodiments of the present invention, which are generally described and illustrated herein in the accompanying drawings can be come with a variety of different configurations
Arrangement and design.Therefore, requirement is not intended to limit to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
The scope of the present invention of protection, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, this field skill
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Hereinafter, term " includes ", " having " and its cognate that can be used in various embodiments of the present invention are only
It is intended to mean that special characteristic, number, step, operation, the combination of element, component or aforementioned item, and is understood not to first
Exclude the combined presence or increase by one of one or more other features, number, step, operation, element, component or aforementioned item
A or more feature, number, step, operation, element, component or aforementioned item combination a possibility that.
In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, it is not understood to indicate or imply
Relative importance.
Unless otherwise defined, otherwise all terms (including technical terms and scientific terms) used herein have and this
The identical meaning of the various normally understood meanings of embodiment one skilled in the art of invention.The term (such as exists
The term limited in the dictionary generally used) it is to be interpreted as that there is contain identical with situational meaning in the related technical field
Justice and Utopian meaning or meaning too formal will be interpreted as having, unless in various embodiments of the present invention
It is clearly defined.
The first stage that fire occurs is that detected object temperature anomaly rises, and second stage is the generation of a large amount of flue dust,
And with the rapid increase of mass temperature, the phase III is the generation of open fire, and ambient temperature steeply rises.It is currently used
Fire detection mode starts to detect in second stage, and fire occurs inevitable at this time, and fire will lead to serious money
The life security for producing loss, field personnel and fire fighter injures.Such as live substance is the high-risk substance of harmful influence, will be drawn
The more extreme situations such as scene of fire explosion are sent out, so as to cause serious consequence.
Referring to Fig. 1 and Fig. 2, in one embodiment, the present invention provides a kind of fire prevention methods, and it is pre- to be applied to fire
Anti- system, system include at least one thermal infrared imager 220 at the tested scene 2 of shooting angle covering；Method includes:
Step S110: it is obtained with predetermined time interval each in the test object thermal imaging of at least one thermal infrared imager acquisition
The temperature value of pixel.
The fire prevention method of the embodiment of the present invention gets each pixel in test object thermal imaging by thermal infrared imager
The temperature value of point, thus, it is possible to monitor each local temperature change of test object, it is different before generation fire to find in time
Reason condition.
In a specific embodiment, predetermined time interval 1S-3S.
The fire prevention method of the embodiment of the present invention, can be in the temperature change for monitoring test object in time.
Step S120: if the temperature value of any pixel point is being greater than the pixel just in current time test object thermal imaging
When normal temperature threshold value, using the pixel as test object extraordinary image vegetarian refreshments, and the pixel is recorded in the temperature at current time
Value.
Test object includes harmful influence and the monitoring device etc. for monitoring harmful influence.If test object is harmful influence, the picture
The normal temperature threshold value of vegetarian refreshments is under harmful influence normal condition, that is, in the case where monitoring harmful influence no alarm sending, any
Temperature averages in the section time.If test object is monitoring device, the normal temperature threshold value of the pixel be monitoring device just
Under normal operating status, that is, in the case where monitoring monitoring device no alarm sending, the temperature averages in a period of time in office.
The fire prevention method of the embodiment of the present invention is somebody's turn to do when the temperature value of any pixel point in test object thermal imaging is greater than
When the normal temperature value threshold value of pixel, be then labeled as test object extraordinary image vegetarian refreshments, indicate the pixel there are abnormal conditions,
It, can be effectively to the check object meanwhile convenient for tracking the temperature change of the test object extraordinary image vegetarian refreshments at the moment backward
The abnormal position that extraordinary image vegetarian refreshments corresponds to test object takes corresponding precautionary measures.
Step S130: the temperature value of each pixel in the thermal imaging of subsequent time test object is obtained, if test object is abnormal
Pixel is greater than the temperature value of last moment in the temperature value of subsequent time, then records test object extraordinary image vegetarian refreshments in lower a period of time
The temperature value at quarter.
The fire prevention method of the embodiment of the present invention is influenced or other factors by the environment at tested scene, was being monitored
Cheng Zhong, test object extraordinary image vegetarian refreshments will appear the case where temperature rises or declines, and when test object extraordinary image vegetarian refreshments
It is then recorded, the temperature value for temperature decline occur can be rejected when temperature value rises.Thereby, it is possible to detect detection pair
As the temperature of each section ascendant trend of extraordinary image vegetarian refreshments, data redundancy is reduced, convenient for analysis.
Step S140: if each temperature value of the test object extraordinary image vegetarian refreshments of record ascendant trend occurs until being greater than or waiting
When the pixel corresponding test object fire prevention threshold value, then alarm signal is issued.
In monitoring process, test object extraordinary image vegetarian refreshments is it is possible that once or several times temperature value is in rising trend
The case where, when temperature value test object fire prevention threshold value corresponding more than or equal to the pixel, then issue alarm signal.
Wherein, the normal temperature threshold difference range example of test object fire prevention threshold value and corresponding pixel points in test object thermal imaging
Such as can be at 20 DEG C -30 DEG C, it specifically can be depending on practical specific test object.Wherein, if test object is harmful influence,
Test object fire prevention threshold value is the fire prevention threshold value of harmful influence；If test object is monitoring device, test object fire
Calamity prevents the fire prevention threshold value that threshold value is monitoring device.
The fire prevention method of the embodiment of the present invention can based on the test object thermal imaging that thermal infrared imager is got
The temperature field for monitoring test object surface can find measurand by the Current Temperatures of each pixel in figure in time
Each local abnormal conditions.When the temperature value of any pixel point then can be labeled as inspection beyond the normal temperature threshold value of the pixel
Object extraordinary image vegetarian refreshments is surveyed, thereby, it is possible in following instant, record the ascendant trend of the test object extraordinary image vegetarian refreshments, with
Just find the local anomaly of test object to issue alarm signal in time.The embodiment of the present invention can prevent test object from reaching combustion
The generation to cause fire is put, triggers fire alarm in time before open fire to be occurred.
In a specific embodiment, interior over any time period to obtain detection in real time under test object normal condition
The temperature value of each pixel in object thermal imaging, and by corresponding pixel points over any time period in average temperature value be set as the picture
The normal temperature threshold value of vegetarian refreshments.
During monitoring, test object state normal condition indicates that no alarm situation therefore can be over any time period
In the test object thermal imaging acquired by thermal infrared imager, the real-time temperature values of each pixel are obtained, and calculate each picture respectively
The average value of vegetarian refreshments during this period of time, thus as the corresponding normal temperature threshold value of each pixel.
The fire prevention method of the embodiment of the present invention, the normal temperature threshold based on each pixel under test object normal condition
Value can relatively accurately obtain the normal temperature of each local surfaces of test object, while can also be according to the actual situation triggering
Alarm provides relatively reliable foundation, improves the precision of fire prevention.
In a specific embodiment, test object is harmful influence；
If " there is ascendant trend until being greater than or equal to the pixel in each temperature value of the test object extraordinary image vegetarian refreshments of record
When the corresponding test object fire prevention threshold value of point, then alarm signal is issued " include:
There is ascendant trend in each temperature value of the harmful influence extraordinary image vegetarian refreshments of record, and reaches the normal temperature of the pixel
After threshold value, the temperature gap of adjacent moment is less than or equal to the first fiducial temperature, and the sum of each temperature gap is greater than or equal to
When the first heating threshold value, then alarm signal is issued.
The fire prevention method of the embodiment of the present invention, if when detection harmful influence, test object extraordinary image vegetarian refreshments is harmful influence
Extraordinary image vegetarian refreshments, test object fire prevention threshold value be the first temperature rise threshold value in harmful influence thermal imaging corresponding pixel points it is normal
The sum of temperature threshold.Within the entirely monitoring period, it may appear that harmful influence surface temperature is in the abnormal conditions that slowly rise, every time on
The temperature risen is smaller, but is not excluded for persistently rising to ignition point.Wherein, the temperature gap of adjacent moment is less than or equal to first
The pre- temperature difference, for example, 1 DEG C, 1.5 DEG C or 2 DEG C.From the normal temperature threshold value for reaching corresponding pixel points, what is persistently risen is each
When the sum of temperature gap is greater than or equal to the first temperature rise threshold value, then alarm signal is issued, wherein range example when the first temperature rise threshold value
It such as can be between 20 DEG C -30 DEG C.
The embodiment of the present invention can continue to monitor the variation tendency of the surface temperature of harmful influence, can be in the first rank of fire
When section is that harmful influence abnormal temperature rises, alarm signal is issued, in time to prevent temperature rise from persistently ascending into fire second stage.
Further, the embodiment of the present invention can be detected each local temperature change of harmful influence by harmful influence extraordinary image vegetarian refreshments and become
Gesture takes corresponding precautionary measures when temperature occurs and slowly rises in time.
It indicates
For Hi, the first temperature rise threshold value is expressed as Qi, then test object fire prevention threshold value is expressed as Hi+Qi.Further, it is with coal bunker
, cause its dump surface temperature to rise with it because the factors constant temperature such as environment rises due to reactor core in coal-fired stacking,
And under the initiation of many conditions such as air, it is easy to cause spontaneous combustion.Therefore, variation can be risen by carrying out constant temperature to the dump
Alarm, including temperature slowly rise variation the case where, as by thermal infrared imager acquisition dump thermal imaging in each picture
The temperature value of vegetarian refreshments, when there is coal surface point or the rising of a part constant temperature, even if in slowly rising, unlike fire
Such temperature occurs rapidly to increase, is not up to set temperature upper limit threshold immediately, but meets the characteristics of dump is intended to spontaneous combustion, system is accused
It warns and staff is notified to enter scene and carry out investigation processing.
Referring to fig. 2, in a specific embodiment, " each pixel in the thermal imaging of subsequent time test object is obtained
Temperature value records detection if test object extraordinary image vegetarian refreshments is greater than the temperature value of last moment in the temperature value of subsequent time
Include: after temperature value of the object extraordinary image vegetarian refreshments in subsequent time "
If there is ascendant trend and reaches the normal temperature threshold of the pixel in the temperature of the harmful influence extraordinary image vegetarian refreshments of record
After value, the temperature gap risen in the first preset time period reaches the second heating threshold value or the temperature value of rising reaches the picture
When the corresponding environment fire prevention temperature threshold of vegetarian refreshments, then alarm signal is issued.
Disaster prevention system may also include each temperature sensor 230 being set to around tested scene.Temperature sensor 230 can
Monitoring is tested the ambient temperature data at scene, for example, can obtain over any time period each in the case where tested scene is without exception
The collected ambient temperature data of temperature sensor 230, and the average value of each ambient temperature data in the period is set as ring
Border fire prevention temperature threshold.
For example, the first preset time period duration range is between -6 seconds 3 seconds, environment fire prevention temperature threshold is greater than or waits
The corresponding normal temperature threshold value of each pixel in harmful influence thermal imaging, the second temperature rise threshold range is between 8 DEG C -12 DEG C.
The fire prevention method of the embodiment of the present invention can rise to the positive room temperature of the pixel in harmful influence extraordinary image vegetarian refreshments
Spend threshold value rise, it is extremely short in the first preset time period such as the period, and rise temperature gap reach the second temperature rise threshold value or on
The temperature value risen reaches the corresponding environment fire prevention temperature threshold of the pixel, then issues alarm signal.The embodiment of the present invention
Can be during monitoring, when there is harmful influence surface, locally temperature rapid increase and triggering when exceeding certain temperature value for appearance
Alarm, so as to which lighting suddenly for such as open fire caused by being prevented in time because of certain factors, prevents the generation for causing fire, together
When avoid the further deterioration of situation.
The fire prevention method of the embodiment of the present invention, the normal temperature threshold based on each pixel under harmful influence normal condition
Value can relatively accurately obtain the normal temperature of each local surfaces of harmful influence, while can also accuse according to the actual situation for triggering
Police provides relatively reliable foundation, improves the precision of fire prevention.
In a specific embodiment, test object is monitoring device；
If " there is ascendant trend until being greater than or equal to the pixel in each temperature value of the test object extraordinary image vegetarian refreshments of record
When the corresponding fire prevention threshold value of point, then alarm signal is issued " include:
There is ascendant trend in each temperature value of the monitoring device extraordinary image vegetarian refreshments of record, and reaches the positive room temperature of the pixel
It spends threshold value to rise, the temperature value of adjacent moment is less than or equal to the second fiducial temperature, and the sum of each temperature gap is greater than or equal to the
When three heating threshold values, then alarm signal is issued.
The fire prevention method of the embodiment of the present invention, if detection monitoring device, test object fire prevention threshold value is the
Three temperature rise threshold values and monitoring device under normal operating conditions in monitoring device thermal imaging corresponding pixel points normal temperature value it
With.Within the entirely monitoring period, it may appear that monitoring device surface temperature is in the abnormal conditions slowly risen, the temperature risen every time
It is smaller, but be not excluded for persistently rising to ignition point.Wherein, the temperature gap of adjacent moment is less than or equal to the second default temperature
Difference, for example, 1 DEG C, 1.5 DEG C or 2 DEG C.When from the normal temperature for reaching corresponding pixel points under monitoring device normal operating condition
Threshold value rises, and when the sum of each temperature gap persistently risen is greater than or equal to third temperature rise threshold value, then issues alarm signal, wherein
Third temperature rise threshold range for example can be between 20 DEG C -30 DEG C.
The embodiment of the present invention can continue to monitor the variation tendency of the surface temperature of equipment, can be in the first stage of fire
When i.e. monitoring device abnormal temperature rises, alarm signal is issued, in time to prevent temperature rise from persistently ascending into fire second stage.
Further, the embodiment of the present invention can be detected each local temperature of monitoring device by monitoring device extraordinary image vegetarian refreshments and be become
Change trend takes corresponding precautionary measures when temperature occurs and slowly rises in time.
In a specific embodiment, " become if rising occurs in each temperature value of the test object extraordinary image vegetarian refreshments of record
Gesture then issues alarm signal, includes: later when test object fire prevention threshold value corresponding more than or equal to the pixel
If there is ascendant trend and reaches the normal temperature of the pixel in the temperature of the monitoring device extraordinary image vegetarian refreshments of record
Threshold value rises, and when the temperature gap risen in the second preset time period reaches the 4th temperature rise threshold value, then issues alarm signal.
For example, the second preset time period duration range be -6 seconds 3 seconds between, the 4th temperature rise threshold range be 8 DEG C -12 DEG C it
Between.
The fire prevention method of the embodiment of the present invention can rise to monitoring device in monitoring device extraordinary image vegetarian refreshments and normally transport
The normal temperature threshold value of the pixel rises under row state, and the temperature gap risen reaches the 4th temperature rise threshold value, then issues alarm
Signal.The embodiment of the present invention can during monitoring, when occur monitoring device surface locally occur temperature rapid increase and
Alarm is triggered when beyond certain temperature value, so as to such as open fire caused by being prevented in time because of certain factors is lighted suddenly,
It prevents from causing the generation of fire, while avoiding the further deterioration of situation.
Referring to fig. 2, the embodiment preferential as one, such as by under monitoring device normal operating condition, monitoring device heat at
The normal temperature threshold value of corresponding pixel points is expressed as G as in, and the 4th temperature rise threshold value is expressed as Pi, then test object fire prevention threshold
Value is expressed as G+Pi.
Further, for monitoring the equipment in inflammable chemicals warehouse, monitoring device may include dehumidifier, air-conditioning etc.
Equipment belongs to high-power electric appliance equipment, though such equipment has Explosion-proof Design and certification, at work, since electric current is excessive
Etc. reasons, it is abnormal that aging or short circuit sparking etc. occur in electric wire or plug, then will lead to the major hidden dangers such as fire.In route or connect
There is sparking situation in head, can cause the explosion-proof pipe surface of route or combination hub explosion-proof layer surface temperature exception rapid increase and decline
(short switch disconnection causes temperature to decline), when the rapid increase temperature difference reaches the 4th temperature rise threshold value to its temperature in a short time,
System trigger alarm.
As a preferred embodiment, under monitoring device off-position, the interior monitoring of acquisition in real time is set over any time period
The temperature value of each pixel in standby thermal imaging, and by corresponding pixel points over any time period in average temperature value be set as monitoring and set
The normal temperature threshold value of the standby pixel in the power-off state.During monitoring, if respective pixel in monitoring device thermal imaging
The temperature value of point, corresponding normal temperature threshold value is corresponding under monitoring device normal operating condition under monitoring device off-position
Normal temperature threshold value between, then do not issue alarm signal.
Fig. 2 is participated in, in one embodiment, the embodiment of the invention also provides a kind of disaster prevention systems, comprising: monitoring
Terminal 210 and connection monitor terminal 210 and each thermal infrared imager 220 for shooting the tested scene 2 of vision covering；Monitor terminal
210 are stored with computer program, and it is pre- that monitor terminal 210 implements fire described in the various embodiments described above when executing computer program
Anti- method.
It should be noted that the fire prevention method in the present embodiment and the fire prevention method in the various embodiments described above
Principle of Process is identical, and details are not described herein.
Disaster prevention system of the invention lays thermal infrared imager 220 in tested scene, passes through monitor terminal 210
The collected test object thermal imaging of thermal infrared imager 220 is obtained, so as to reduce interference of the external environment to monitoring.Together
When, based on the test object thermal imaging that thermal infrared imager 220 is got, it can monitor tested 260 surface of test object
Temperature field can find each local abnormal feelings of test object 260 by the Current Temperatures of each pixel in figure in time
Condition, wherein test object 260 includes monitoring device and harmful influence.When the temperature value of any pixel point is beyond the normal of the pixel
Temperature threshold can then be labeled as test object extraordinary image vegetarian refreshments, and thereby, it is possible in following instant, record test object exception
The ascendant trend of pixel, to find the local anomaly of test object 260 to issue alarm signal in time.The present invention can prevent
Only test object 260 reaches burning point to cause the generation of fire, triggers fire alarm in time before open fire to be occurred.
Referring to fig. 2, in a specific embodiment, further include connection monitoring whole 210 and be set to around tested scene
Each temperature sensor 230.
The disaster prevention system of the harmful influence of the embodiment of the present invention, temperature sensor 230 are used to detect the ring at the scene of being tested
Border temperature extends monitoring condition, facilitates the precision for further improving fire prevention so as to combining environmental temperature data.
In a specific embodiment, the connection type of thermal infrared imager and monitor terminal be WIFI, bluetooth and
Any one of Zigbee or any number of combination.
The connection type diversification of the disaster prevention system of the embodiment of the present invention, thermal infrared imager and monitor terminal, can
Different test environments is adapted to, the efficiency of transmission of data and the reliability of monitoring are helped to improve.
As a preferred embodiment, the disaster prevention system of the embodiment of the present invention further includes connection monitor terminal 210
Server 240, the networking gateway 250 for being separately connected thermal infrared imager 220 and temperature sensor 230；Server 240 and networking net
Close 250 connections.
It further include the server 240 and networking gateway 250 being connected between thermal infrared imager 220 and monitor terminal；Wherein,
Networking gateway 250 is connected between thermal infrared imager 220 and server 240.
The data that networking gateway 250 is used to send the thermal infrared imager 220 received and/or temperature sensor 230 are compiled
Server 240 is sent to after code, and will be sent to server 240 after data encoding that the monitor terminal 210 received is sent.
Server 240 is used to for the data after coding that the networking gateway 250 received is sent to be sent to monitor terminal 210, and will
Data after the coding that the monitor terminal 210 received is sent are sent to thermal infrared imager 220 and/or temperature sensor 230.
The disaster prevention system of the embodiment of the present invention, structure is more perfect, and intelligence degree is high.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through
Other modes are realized.The apparatus embodiments described above are merely exemplary, for example, flow chart and structure in attached drawing
Figure shows the system frame in the cards of the device of multiple embodiments according to the present invention, method and computer program product
Structure, function and operation.In this regard, each box in flowchart or block diagram can represent a module, section or code
A part, a part of the module, section or code includes one or more for implementing the specified logical function
Executable instruction.It should also be noted that function marked in the box can also be to be different from the implementation as replacement
The sequence marked in attached drawing occurs.For example, two continuous boxes can actually be basically executed in parallel, they are sometimes
It can execute in the opposite order, this depends on the function involved.It is also noted that in structure chart and/or flow chart
The combination of each box and the box in structure chart and/or flow chart, can function or movement as defined in executing it is dedicated
Hardware based system realize, or can realize using a combination of dedicated hardware and computer instructions.
In addition, each functional module or unit in each embodiment of the present invention can integrate one independence of formation together
Part, be also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be intelligence
Can mobile phone, personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned include: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory),
Random access memory (RAM, Random Access Memory), magnetic or disk etc. be various to can store program code
Medium.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.
Claims (10)
1. a kind of fire prevention method, which is characterized in that be applied to disaster prevention system, the system comprises shooting angle coverings
It is tested at least one thermal infrared imager at scene；The described method includes:
Each pixel in the test object thermal imaging of at least one thermal infrared imager acquisition is obtained with predetermined time interval
Temperature value；
If the temperature value of any pixel point is greater than the normal temperature threshold of the pixel in test object thermal imaging described in current time
When value, using the pixel as test object extraordinary image vegetarian refreshments, and the pixel is recorded in the temperature value at the current time；
The temperature value for obtaining each pixel in test object thermal imaging described in subsequent time, if the test object extraordinary image vegetarian refreshments
It is greater than the temperature value of last moment in the temperature value of the subsequent time, then records the test object extraordinary image vegetarian refreshments described
The temperature value of subsequent time；
If there is ascendant trend until be greater than or equal to the pixel in each temperature value of the test object extraordinary image vegetarian refreshments of record
When the corresponding test object fire prevention threshold value of point, then alarm signal is issued.
2. fire prevention method according to claim 1, which is characterized in that under the test object normal condition,
The temperature value of each pixel in the test object thermal imaging is obtained in any time period in real time, and by corresponding pixel points described
Average temperature value in any time period is set as the normal temperature threshold value of the pixel.
3. fire prevention method according to claim 1, which is characterized in that the test object is harmful influence；
It is described " to be somebody's turn to do if ascendant trend occurs in each temperature value of the test object extraordinary image vegetarian refreshments of record until being greater than or equal to
When the corresponding test object fire prevention threshold value of pixel, then alarm signal is issued " include:
There is ascendant trend in each temperature value of the harmful influence extraordinary image vegetarian refreshments of record, and reaches the normal temperature threshold value of the pixel
Later, the temperature gap of adjacent moment is less than or equal to the first fiducial temperature, and the sum of each temperature gap is greater than or equal to first
When the threshold value that heats up, then alarm signal is issued.
4. fire prevention method according to claim 3, which is characterized in that described " to obtain detection pair described in subsequent time
As the temperature value of pixel each in thermal imaging, if the test object extraordinary image vegetarian refreshments is greater than in the temperature value of the subsequent time
The temperature value of last moment then records the test object extraordinary image vegetarian refreshments in the temperature value of the subsequent time " include: later
If there is ascendant trend and reaches the normal temperature threshold of the pixel in the temperature of the harmful influence extraordinary image vegetarian refreshments of record
After value, the temperature gap risen in the first preset time period reaches the second heating threshold value or the temperature value of rising reaches the picture
When the corresponding environment fire prevention temperature threshold of vegetarian refreshments, then alarm signal is issued.
5. fire prevention method according to claim 1, which is characterized in that the test object is monitoring device；
It is described " to be somebody's turn to do if ascendant trend occurs in each temperature value of the test object extraordinary image vegetarian refreshments of record until being greater than or equal to
When the corresponding fire prevention threshold value of pixel, then alarm signal is issued " include:
There is ascendant trend in each temperature value of the monitoring device extraordinary image vegetarian refreshments of record, and reaches the normal temperature threshold of the pixel
It is worth, the temperature gap of adjacent moment is less than or equal to the second fiducial temperature, and the sum of each temperature gap is greater than or equal to third
When the threshold value that heats up, then alarm signal is issued.
6. fire prevention method according to claim 5, which is characterized in that described " if the test object of record is different
There is ascendant trend until being greater than or equal to the corresponding test object fire prevention threshold of the pixel in each temperature value of normal pixel
When value, then alarm signal is issued, includes: later
If there is ascendant trend and reaches the normal temperature of the pixel in the temperature of the monitoring device extraordinary image vegetarian refreshments of record
Threshold value rises, and when the temperature gap risen in the second preset time period reaches the 4th temperature rise threshold value, then issues alarm signal.
7. according to claim 1 to fire prevention method described in 6 any one, which is characterized in that the predetermined time interval
For 1S-3S.
8. a kind of disaster prevention system of harmful influence characterized by comprising monitor terminal and the connection monitor terminal
And shoot each thermal infrared imager that vision covering is tested scene；The monitor terminal is stored with computer program, and the monitoring is eventually
Implement fire prevention method described in claim 1 to 7 any one when executing the computer program in end.
9. the disaster prevention system of harmful influence according to claim 8, which is characterized in that further include connecting the monitoring eventually
End and each temperature sensor being set to around the tested scene.
10. the disaster prevention system of harmful influence according to claim 8, which is characterized in that the thermal infrared imager and institute
The connection type for stating monitor terminal is any one of WIFI, bluetooth and Zigbee or any number of combination.
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| CN201910441511.XA CN110174173A (en) | 2019-05-24 | 2019-05-24 | Fire prevention method and system |
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|---|---|---|---|
| CN201910441511.XA CN110174173A (en) | 2019-05-24 | 2019-05-24 | Fire prevention method and system |
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| CN111366245A (en) * | 2020-03-12 | 2020-07-03 | 深圳达温技术服务有限公司 | Method for improving detection capability of infrared temperature measurement on abnormal heating |
| CN111415487A (en) * | 2020-04-07 | 2020-07-14 | 珠海格力电器股份有限公司 | High-temperature early warning method and device and air conditioner |
| CN111680567A (en) * | 2020-05-12 | 2020-09-18 | 深圳数联天下智能科技有限公司 | Living body detection method, living body detection device, computer equipment and storage medium |
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| CN112048739A (en) * | 2020-08-31 | 2020-12-08 | 中国铝业股份有限公司 | Safety early warning method and safety early warning system for aluminum electrolysis cell |
| CN112785809A (en) * | 2020-12-31 | 2021-05-11 | 四川弘和通讯有限公司 | Fire re-ignition prediction method and system based on AI image recognition |
| CN114049353A (en) * | 2022-01-11 | 2022-02-15 | 合肥金星智控科技股份有限公司 | Furnace tube temperature monitoring method |
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| CN112048739B (en) * | 2020-08-31 | 2021-11-02 | 中国铝业股份有限公司 | Safety early warning method and safety early warning system for aluminum electrolysis cell |
| CN112048739A (en) * | 2020-08-31 | 2020-12-08 | 中国铝业股份有限公司 | Safety early warning method and safety early warning system for aluminum electrolysis cell |
| CN112785809A (en) * | 2020-12-31 | 2021-05-11 | 四川弘和通讯有限公司 | Fire re-ignition prediction method and system based on AI image recognition |
| CN114049353A (en) * | 2022-01-11 | 2022-02-15 | 合肥金星智控科技股份有限公司 | Furnace tube temperature monitoring method |
| CN115050154A (en) * | 2022-06-10 | 2022-09-13 | 中国建设科技集团股份有限公司 | Multifunctional indoor security monitoring and alarming system |
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