CN100425959C - Infrared source heat image detecting method - Google Patents
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Abstract
The present invention discloses a method for detecting infrared source heat images, which comprises a dot matrix sensitizing imaging chip and a detector, wherein the detector is composed of filters with different wavelengths and detects a specific wavelength, and the filters are selected as required; the detector is formed by arranging an optical lens assembly in front of the dot matrix sensitizing imaging chip, and the output end of dot matrix sensitizing imaging chip is connected with a microprocessor; the microprocessor scans the infrared source heat images on the dot matrix sensitizing imaging chip and records sensitized bright spots, and different brightness levels correspond to different temperatures. The method for detecting the infrared source heat images and the obtained detector thereof can detect a heat source generated in a monitor area and can judge the magnitude and the plane position of the heat source. The method and the device makes a judgment to the moving trend and the development trend of the heat source according to detection results, judges the total power of the heat source, provides an accurate imaging graph of the heat source and provides a reference for accurately judging whether a fire disaster exists or not; moreover, the method and the device detects the existence conditions and the moving conditions of human beings or animals and positions intruding human beings or animals. The present invention can be extensively applied to the technical precaution field for intrusion alarming, periphery alarming, etc.
Description
Technical field
The present invention relates in a kind of environment that is mainly used in fire-fighting, technical precaution or similar requirement, to the method that the thermal source that is produced in the guarded region is surveyed and quantized, particularly a kind of hot showing resembles the method that detects to infrared radiation source.
Technical background
As everyone knows, dot matrix photosensitive imaging chip mainly be as the equipment such as video camera that use in the visible region as the image sensor devices, just rare for it in the application beyond the visible light wave range.In the environment of technical precaution or similar requirement.The sensor devices that such technology adopted normally adopts heat to release that device finishes, and is limited to technology and cost, adopts heat to release that device makes up at present.
The fire fighting detector (being commonly called as probe) that generally uses in the world mainly adopts the point type detector now, that is to say that detector only detects the environmental parameter of its mounting points, and the detection content of fire fighting detector mainly contains temperature and smog two big classes:
A, Smoke Detection mainly adopt: 1, shielding mode, a labyrinth-like transmitting mirror is set in detector, launches a branch of infrared light, receive this infrared light at the other end by an end, to stop infrared light after smog enters the labyrinth, receiving end judges whether to have smog according to this variation; 2, by a radiation source emission electron ion, the other end is provided with a receiving trap, and when when smog appears in this radiation area, with the electron ion of stop portions radiation source, the receiving trap of receiving end can be offered an explanation out above-mentioned variation, thereby identifies smog; Similar fashion detects carbon monoxide or the like method in addition.
B, temperature recognition method: technical characterictic is to adopt the differential temperature mode that the temperature variation of monitoring environment is detected, and the absolute temperature of employing detection mode is also arranged, and the absolute temperature or the temperature rise speed of detector mounting points detected.
Above-mentioned detection mode all is that data with the detector mounting points are as basis for estimation, it what can reflect is " having " or " not having ", though the fire fighting detector of analog quantity mode is arranged, but still be only the temperature of mounting points little space to be carried out analog quantity to detect, infer the overall situation in room, place, control point, because the space of detector mounting points is different, so the parameter that is reflected in the detector mounting points under same critical conditions is also different fully, so far domesticly as if still do not solve the rational setting problem at threshold limit value reference mark, thereby cause fire protection alarm system almost not reported by mistake.Simultaneously, be merely able to adopt the estimation mode, can not accurately limit for guarded region.
Summary of the invention
The objective of the invention is provides a kind of by the scanning guarded region in order to solve the deficiencies in the prior art, objectively respond the monitoring area and whether produce fire, specified wavelength infrared heat source to guarded region scans, and providing accurate thermal source to change by coordinate, hot showing resembles the method that detects to infrared radiation source accurately to judge whether to have fire trend a kind of.
In order to achieve the above object, hot showing resembles the method that detects to designed a kind of of the present invention to infrared radiation source, it comprise dot matrix photosensitive imaging chip and as required the filter of the different wave length of apolegamy form the detector that specific wavelength is detected, described detector is to make up at the preposition optical lens that adds of dot matrix photosensitive imaging chip, the output terminal of dot matrix photosensitive imaging chip is connected with microprocessor, microprocessor resembles the infrared radiation source hot showing on the photosensitive imaging chip and scans, the bright spot of sensitization is noted, and different brightness degrees are corresponding to the different temperatures height.Described optical lens combination comprises the combination of optical imagery camera lens and filter or has the optical imagery camera lens of filter effect concurrently.The filter of described different wave length can be 8.5～12 mum wavelength filters that are used for 0.78～8.5 mum wavelength filter of fire fighting detector or are used for the technical precaution detector.Described microprocessor can be the CPU of dsp processor or the control of other tape programs.
For basic parameters such as the position of accurately judging infrared heat source, size, development trends, described infrared radiation source hot showing resembles the measurement diameter and embedded coordinate is to adopt dynamical fashion to carry out coordinate to embed, base coordinate is set to be determined at interval, detector records its diameter from terminal point coordinate to starting point coordinate after the infrared radiation source hot showing resembles detecting, when finding that many places infrared radiation source hot showing resembles figure, infrared heat source is described at interval with the pairing coordinate of minimum infrared heat source diameter.When changing coordinate parameters, the coordinate interval data that transmission signals loads after the change automatically causes master controller.
By the microprocessor in the detector being preset or the scene is provided with environment infrared radiation source data, can make detector " remember " to be preset at the coordinate and the diameter of the normal infrared heat source that has existed in the zone of its monitoring, its method is: 1, position with infrared heat source in master controller marks out on coordinate, and download and give detector, when detector finds that site infrare source hot showing resembles, with the comparison memory database in the comparison internal memory, the infrared radiation source hot showing that is not inconsistent with internal memory in the database resembles figure and will be uploaded to master controller by transmission interface as dangerous information, will make respective handling (for example not responding) when the coordinate of hot external heat map figure and database mark and diameter conform to.2, when being in debug phase or " understanding " during the stage, site infrare thermal source and coordinates transmission are remembered internal memory by detector, detector memory above-mentioned parameter, and marking above-mentioned infrared radiation source hot showing, to resemble figure be the normal information source.
For diverse location in the guarded region and different time generation infrared heat source are distinguished, can delimit monitoring range by the mode that regional monitoring range is marked, and finish the different monitoring zone at different time period regulation detectors by the time window mode is set.Implementation is: 1, detector with master controller regularly during communication, will obtain real-time time, inquire about the database of corresponding different time according to the time, thereby know the managerial grid scope of different time.2, more permanent the coordinate section that will not manage is set, the infrared heat source that detector is found at above-mentioned coordinate section all can be not processed.
It is described in the invention that a kind of hot showing resembles the method that detects to infrared radiation source, its detector adopts the equivalent mode to describe infrared heat source power, its main implementation is: detector is calculated diameter and the area and the temperature of infrared heat source, the data of its gained that multiplies each other is just represented the equivalent of power of heat source.
It is described in the invention that a kind of hot showing resembles the method that detects to infrared radiation source, mainly solved the problem that A, fire fighting detector can carry out qualitative and detection by quantitative to the infrared heat source of monitored environment, after using the present invention, can the thermal source that be produced in the guarded region be detected, can judge size, the planimetric position of this thermal source.B, can move with development trend thermal source according to testing result and judge, can judge, can provide accurate thermal source map figure, for judging whether that accurately having fire provides foundation to the thermal source general power.C, change the existence and the situation of movement that can detect the human or animal after 9～10 μ m filters, can resemble map analysis and judgement is the human or animal from the infrared radiation source hot showing; Can be to the human or animal location of invasion.Can be applied to the intrusion alarm, perimeter alarm in technological prevention field etc.
Adopt that described in the invention a kind of hot showing resembles the method that detects to infrared radiation source, according to the different choice to required filter wavelength in the optical lens combination, can obtain two class detectors: a class can be applied to fire-fighting domain, as fire detector; Another kind of existence and the position of detecting the human or animal that be mainly used in.
A kind of hot showing resembles the resulting detector of the method that detects or supervising device when being applied to fire fighting detector, the advantage that has compared with the prior art to infrared radiation source by described in the invention:
1, existing detector mainly detects the detector mounting points and whether has detected material, and for example the Smoke Detection detector can only can be found during through detector at smog.New technology is by the scanning guarded region, detect and whether have infrared heat source, all can be detected as long as infrared heat source in the detector visual line of sight, occurs, because " sight line " mode of employing detects infrared heat source, its method simulated human is observed, and can objectively respond whole monitoring area and whether produce infrared heat source.Existing product can only detect the temperature of detector mounting points, can not provide detection to regional monitoring range.
2, detector provides basic parameters such as the position of infrared heat source, size, development trend by the diameter that detects infrared heat source, the coordinate of infrared heat source, above-mentioned parameter provides comparatively accurate basis for estimation to managerial personnel after by Computer Processing, can effectively reduce the wrong report phenomenon.Existing detector can only provide " having " or " not having ", and further data can't be provided.
3, on detector, temperature is directly proportional with detector " brightness ", by the infrared map brightness of detection infrared heat source and the diameter of infrared heat source, and above-mentioned parameter multiplied each other just can obtain " equivalent of power of heat source " parameter, this parameter can provide qualitative index to infrared heat source and hazard level.Existing detector can only provide " having " or " not having ", and further reference data can't be provided.
Adopt the detector of the technology of the present invention to adopt active mode to detect infrared heat source, its testing process uses " visual " mode to detect infrared origin, can realize remote the detection and isolation detection, can be easy to install and use in explosion-proof or other similar particular surroundingss.Prior art does not possess remote detectability, and explosion-proof difficulty.
By described in the invention a kind of to infrared radiation source hot showing resemble the resulting detector of the method that detects or supervising device when being applied to the safety technological guard field compared with the prior art its advantage be:
1, the detector filter is replaced with 9～10 mu m ranges, (CMOS is generally bad at this wavelength stability after cooperating CCD photosensitive imaging chip, so adopt CCD photosensitive imaging chip, the type chip can be in the effective sensitization of 9～10 μ m), can the infrared heat source that human body produces be detected, use same technology just can the object that produce 25～50 ℃ to be detected and locate, can detect the size and the infrared map figure in invasion source, the concrete coordinate of infrared heat source can be provided.The detecting device of available technology adopting CCD photosensitive imaging chip does not have, and uses heat to release pipe as sensing device at present, can only detect " having " or " not having ", and further information can not be provided.
2, the present invention can use software mode to divide the management area on detector map coordinate, and this technology is highly suitable for and delimit guarded region in the open space.Prior art can only be used in closed space, and it can not provide all information except that " having " or " not having " in the guarded region.Can not use in the zone of an opening.
Description of drawings
Fig. 1 is that detector detects the guarded region synoptic diagram;
Fig. 2 is a dsp processor handling procedure process flow diagram;
Fig. 3 is that detector detects and locate synoptic diagram to infrared heat source;
Fig. 4 is the infrared detector structure synoptic diagram;
Fig. 5 is embodiment 1 a detector installation site synoptic diagram;
Fig. 6 is embodiment 2 detector installation site synoptic diagram.
Embodiment
The invention will be further described in conjunction with the accompanying drawings below by embodiment.But present embodiment does not limit to content of the present invention.
Embodiment 1
Present embodiment is described, and a kind of hot showing resembles the method that detects to infrared radiation source, it comprises dot matrix photosensitive imaging chip and forms the detector that specific wavelength is detected according to the filter of the different wave length of the needs apolegamy of determining, as shown in Figure 4, described detector is to make up at the preposition optical lens that adds of dot matrix photosensitive imaging chip, the output terminal of dot matrix photosensitive imaging chip is connected with microprocessor, microprocessor at first resembles the infrared radiation source hot showing on the photosensitive imaging chip and scans, the bright spot of sensitization is noted, at this, can be by the brightness of 64 grades of Grey Scale Recording sensitivity specks, this gray shade scale is corresponding to the temperature height.The dot matrix photosensitive imaging chip here can adopt CMOS or CCD photosensitive imaging chip; Described optical lens combination comprises the combination of optical imagery camera lens and filter or has the optical imagery camera lens of filter effect concurrently.The filter of described different wave length can be 8.5～12 mum wavelength filters that are used for 0.78～8.5 mum wavelength filter of fire fighting detector or are used for the technical precaution detector.Described microprocessor can be the CPU of dsp processor or the control of other tape programs, and the programmed control flow process as shown in Figure 2.
For describing measurement diameter and embedded coordinate is to adopt dynamical fashion to carry out coordinate to embed, base coordinate is set to be determined at interval, in the present embodiment, base coordinate is set to 5 centimetres, detector records its diameter after detecting the infrared radiation source hot imaging, the diameter of infrared radiation source hot showing elephant adopts terminal point coordinate to deduct the starting point coordinate mode and calculates, whether detector resembles its diameter of back contrast greater than 5 centimetres detecting the infrared radiation source hot showing, if greater than 5 centimetres, then coordinate by 5 centimetres of intervals be adjusted to the infrared heat source diameter near but less than the coordinate of its diameter as coordinate in real time.When finding many places infrared radiation source hot showing image pattern, infrared heat source is described at interval with the pairing coordinate of minimum infrared heat source diameter.When changing coordinate parameters, transmission signals loads coordinate interval data after the change automatically to master controller.
According to fire a situation arises the statistics, near-infrared radiation and cigarette during the fire early period of origination will mainly produce, in order to reduce interference source as far as possible, in the described detector of present embodiment, we select to detect the infrared radiation source of 250 ℃～350 ℃ of scopes, wavelength is between 4.5～5.5 μ m, and selecting this light source mainly is to consider that the infrared radiation source that this spectrum shines upon is few in daily life, and is identified easily.As everyone knows, the groundwork wave band of CMOS or CCD photosensitive imaging chip is at visible light wave range, according to our near infrared source during the infrared radiation source that detects of needs belongs to as can be known of optical principle, because the spectral range that fire produced relates to infrared, visible light, ultraviolet band, and the radiated wave spectral limit that daily life is taken place with lighting source and household electricity device equipment is also in the scope that we detect, so our mentality of designing is to use filter with the whole filterings of the light source of visible light wave range, mainly be by filter will greater than with filter by filter less than the information of 4.5～5.5 mum wavelength scopes, on CMOS or CCD photosensitive imaging chip, have only the infrared heat source information of 4.5～5.5 mum wavelength scopes can arrive the photosensitive imaging chip like this, owing to adopt the filter of this particular range of wavelengths just visible light and our unwanted light source can be filtered out, if at this moment in the detector scanning scope infrared heat source of the monitored wave band of appearance just be equivalent to us and watch a luminophor equally clear in dark.Certainly, filter can not be with the whole filterings of whole interference sources, and still because filter has higher bandwidth selectivity, and for the information of its all band, the information of 4.5～5.5 mum wavelengths will be shown especially, we can discern it easily.
Infrared heat source and situation in the guarded region be can accurately measure for detector, need parameter setting and calibration be carried out detector:
A, the measured zone establishing method: the detector mounting points is calibrated apart from ground vertical range and detector monitors zone: because the present invention can be installed in any different space, when detected environment is different, for example the map figure that produced with 15 meters the time in 3 meters of range finders of the thermal source of 1 square metre of diameter is different, consistent in order to ensure the infrared map that on each physical location, is detected with reality, must calibrate and remember the installing space position of detector, its process is after the detector installation, manually import vertical height and guarded region, also can adopt beacon (a kind of infrared emittance that can launch 4.5～5.5 μ m infrared radiation sources) sign guarded region, detector will calculate the monitoring area according to vertical range and beacon distance, (as shown in Figure 3, the base of isosceles triangle is exactly a guarded region, also can use four angles of beacon mark as shown in Figure 1, will be exactly guarded region between the closed area of forming between four angles).Because detector has the ability that scans detection by coordinate, system just has the ability to download polygonal guarded region to detector from master controller, when requiring to use polygon to set up guarded region, mainly make up the polygon guarded region by describing coordinate points.Measuring the infrared radiation source hot showing resembles and detector vertical range and method and the formula of measuring the infrared heat source diameter: if detector is installed in the room center top, detector visual angle 140 degree (α=70 °), room height X=4 rice (see figure 3), then extension length of side Z=4tg70 ° * 2
1/2, infrared heat source that five equilibrium n part is then detected between detector central point and the detector image edge edge and the distance between the detector satisfy formula: [1+ (kG/nY)
2]
1/2X, this formula describe that the infrared radiation source hot showing resembles and detector between air line distance, hot showing resembles figure and carries out the parameter correction to infrared radiation source according to distance, correction formula is: { [1+ (kG/nY)
2]
1/2X-X}, wherein: the n five equilibrium of n-and center image-forming range G; The k five equilibrium (beginning) of k-and center image-forming range G from central point; G-and center image-forming range; The distance of Y-photosensitive imaging chip and optical lens group switching centre focus; X-becomes the vertical range of image focus to ground from the optical lens center.Describe the infrared heat source size and adopt integral way: press N1+N2+N3 ..., i.e. ∫
1 nN
iMode, wherein N
i=infrared heat source shared area=[total coordinate row-(infrared heat source terminal point coordinate-infrared heat source starting point coordinate)] in some coordinates row
*The area constant of single pixel correspondence.This mode has also been described the area of infrared heat source when describing the infrared heat source shape.Actual infrared heat source computing formula is: the infrared radiation source hot showing resembles the area * enlargement factor on pixel.The elemental area formula is: ordinate central point length * horizontal ordinate central point length.
B, detect the method behind the infrared heat source minimum diameter: thermal source minimum detection diameter is provided with and calibration.Because different monitoring environments is also different to the sensitivity of thermal source, this will monitor sensitivity to thermal source and produce different demands, by the setting to thermal source minimum detection diameter, can give threshold value of detector, when less than this threshold value, will ignore or only show and not report to the police.Describe the infrared heat source size and adopt integral way: press N1+N2+N3 ..., i.e. ∫
1 nN
iMode, wherein N
i=infrared heat source shared area=[total coordinate row-(infrared heat source terminal point coordinate-infrared heat source starting point coordinate)] in some coordinates row
*The area constant of single pixel correspondence.This mode has also been described the area of infrared heat source when describing the infrared heat source shape.Actual infrared heat source computing formula is: the infrared radiation source hot showing resembles the area * enlargement factor on pixel.The elemental area formula is: ordinate central point length * horizontal ordinate central point length.Progression is set is not less than 128 grades.This function can be classified to detected image, image less than the set-point is ignored, graphic reference data corresponding to minimum set-point are when using 140 degree optical lens, the pixel number of diameter 10cm image corresponding expression on the CMOS chip is minimum one-level during apart from 25 meters on camera lens, the every increase of aimed dia 10cm increases one-level, analogizes.
C, dynamically min coordinates is provided with at interval: when needs are accurately described the position of infrared heat source and size, must use meticulous coordinate; When only needing roughly to estimate infrared heat source size and position, coordinate at interval can be bigger.The former will produce bigger data volume when reality is used, the latter then can fast speeds finish description.The present invention uses dynamical fashion to carry out coordinate and embeds: when detector does not detect needed infrared heat source, detector will scan at interval with min coordinates, and detector does not need externally to carry out data transmission; When finding needed infrared heat source, detector is got the infrared heat source diameter near the mode embedded coordinate of coordinate class interval with employing, when finding the many places infrared heat source, describes infrared heat source at interval with the pairing coordinate of minimum infrared heat source diameter.
D, heat source position memory and calibration: industrial environment or commercial environment have some fixing infrared heat sources usually, device such as gas range, warmer for example, these devices will send or consistent infrared heat source approaching with the detector sensitive wave length, be the infrared heat source of difference said apparatus, we adopt mainly whether fixing infrared heat source device is carried out the memory style detection and Identification are normal uses; In addition, the infrared heat source that flows is then adopted mode detection and Identification (for example electric iron, chafing dish etc.) when component analysis.Mainly process is when detector is installed, and infrared heat source location point coordinate and equivalent parameter on master controller in mark and the download detector monitors zone are perhaps opened fixedly infrared heat source device after the detector installation, allow detector oneself remember.Fairly simple to the main recognition method of mobile infrared heat source, when being found in infrared thermal source is moving, its thermal source diameter generally can not change, and temperature variation is slow.When infrared heat source appearred in non-memory point, it did not produce the expansion of carrying out property, and the metastable infrared heat source of calorific value just can be defined as artificial mobile infrared heat source.The fixedly infrared heat source device of being remembered will write master controller image file, revise master controller image file and will change the memory area of detector to infrared heat source.
Because CMOS and the CCD device detector as near-infrared band in surveying is not almost had, so its application technology and mechanism are illustrated: the design wavelength photoreceptor of CMOS and CCD sensor devices is all above visible light wave range usually, especially at low side, general all can meet or exceed near-infrared band, for example common Digital Video or camera just can be taken the photo (adopting the filter mode to filter unwanted wave band) of near infrared even middle-infrared band, because production technology is different, the photosensitive imaging chip that each enterprise produces infrared band the wave band that can extend be different, but can both extend to near-infrared band basically, if as fire fighting detector, its temperature of mainly surveying can be set in the infrared radiation source between 250 ℃～350 ℃, this temperature belongs to the temperature in " smoldering " stage, and naked light also comprises this infrared spectrum naturally certainly.Can be known that by Wien's displacement law our the infrared radiation source wavelength between need survey 250 ℃～350 ℃ is between 5.6～4.5 μ m, by detection and the monitoring to this zone infrared heat source, we can infer whether breaking out of fire.
It is very simple whether checking can adopt CMOS or CCD photosensitive imaging chip that near-infrared band is carried out sensitization, metal generally will send visible light in time more than 450 ℃, general electric soldering iron temperature is 210～350 ℃, as long as in relatively darker environment, use video camera, digital camera, opal (or claims mesh, adopt CMOS as sensor devices, adopt USB interface to connect on computers, video camera as online visual interchange) etc. equipment just can clearly be seen the image (infrared image) that electric soldering iron is bright, certainly some high-grade opal or digital camera can not be seen infrared image in above-mentioned environment, this generally is not that the photosensitive imaging chip can not carry out sensitization to near-infrared band, but the manufacturing enterprise of equipment such as opal is in order to increase the sharpness of opal, in the middle of the optical lens group, added infrared filter, the information filtering that enters infrared band has been fallen; The bandwidth of some CMOS chip does not reach infra-red range yet, can not see infrared image equally like this.By test, the CMOS of multiple brand and its lower limit photosensitive region of CCD photosensitive imaging chip can extend near 6～7 μ m, and the lower limit photosensitive region of some black and white CMOS can extend to 12 μ m.
Following embodiment adopts dot matrix photosensitive imaging chip in the extension sensitometric characteristic development of near infrared and middle-infrared band near infrared to middle-infrared band infrared target to be carried out the detector that the locus is detected and located, and this detector is mainly used in the environment of fire-fighting, technical precaution or similar requirement.
Embodiment 2
When using the present invention as fire fighting detector, allow detector is installed on the wall that does not block, not necessarily require to be installed in the roof.As shown in Figure 5, present embodiment is described a kind of practical application scheme of installation of fire fighting detector, fire fighting detector is installed in the monitored room one jiao, just can detect the infrared heat source in whole room very like a cork by the window at detector optical lens 145 degree angles, owing to adopt the recognition technology of filter technology and detection infrared heat source, what detector was exported is infrared heat source diameter and coordinate, by collimation technique, thereby can effectively observe all infrared heat source situations of distance to a declared goal and scope.Traditional fire fighting detector that prior art constitutes then must be installed in the room center top in order to improve detection accuracy, if the temperature sense type then can only the testing environment temperature integral body raise, if then can only detecting the detector mounting points, smoke detection type whether has smog, can't be by further information.
Embodiment 3
As shown in Figure 6, when present embodiment is described detector and is installed in the top, room, when the room height approximates 4 meters, detector optical lens group angle 140, at this moment the zone that can monitor approximates 256 square metres (computing formula is 4tg70 ° * 2
1/2), control system can manage the designated space in this zone by the coordinate management.
Detect through describing: as shown in Figure 3, before or after optical lens, add filter, can stop effectively that the interference source of non-surveyed area enters into detector chip, have only the detected light source in the filter bandwidth range can pass through filter-optical lens group arrival detector chip, because most of interference source is filtered by filter, have only the small amount of interference light source to enter into detector chip with detected light source, received by dsp processor then, for interference source, signal source is stronger than interference source, so can to produce signal strong and weak poor with interference source, dsp processor only need just be discerned limited interference source can very clearly identify detected signal.Wherein, the optical lens group adopts the material that can see through mid-infrared light, general ruby and the germanium etc. of adopting are to infrared photoresistance materials with smaller, when being used for the detector of convertible purposes, the optical lens group adopts broadband optics lens group, change application target by changing filter, when confirming usable range (fixed-purpose), can directly on the optical lens group, cross film with fixedly filter wavelength and bandwidth.
Claims (5)
1, a kind of method that the infrared radiation source hot imaging is detected, the detector that it has used the filter of different wave length that comprises dot matrix photosensitive imaging chip and apolegamy as required that specific wavelength is detected, it is characterized in that described detector is to make up at the preposition optical lens that adds of dot matrix photosensitive imaging chip, the output terminal of dot matrix photosensitive imaging chip is connected with master controller, master controller scans the infrared radiation source hot imaging on the dot matrix photosensitive imaging chip, the bright spot of sensitization is noted, different brightness degrees are corresponding to the different temperatures height, described optical lens combination comprises the combination of optical imagery camera lens and filter or has the optical imagery camera lens of filter effect concurrently, the filter of described different wave length is 8.5～12 mum wavelength filters that are used for 0.78～8.5 mum wavelength filter of fire fighting detector or are used for the technical precaution detector, describing infrared radiation source hot imaging measurement diameter and embedded coordinate is to adopt dynamical fashion to carry out coordinate to embed, base coordinate is set to be determined at interval, detector records its diameter from terminal point coordinate to starting point coordinate after detecting the infrared radiation source hot imaging, when finding many places infrared radiation source hot imaging, with the pairing coordinate of minimum infrared heat source diameter infrared heat source is described at interval, when changing coordinate parameters, transmission signals loads coordinate interval data after the change automatically to master controller.
2, a kind of method that the infrared radiation source hot imaging is detected according to claim 1, it is characterized in that by the master controller in the detector being preset or the scene is provided with environment infrared radiation source data, can make detector " remember " to be preset at the coordinate and the diameter of the normal infrared heat source that has existed in the zone of its monitoring, its method is: 1, position with infrared heat source in master controller marks out on coordinate, and download and give detector, when detector is found site infrare source hot imaging, with the comparison parameter database in the comparison internal memory, the infrared radiation source hot imaging that is not inconsistent with content in the database will be uploaded to master controller by transmission interface as dangerous information, will make the processing that will not respond when coordinate that hot external heat reflection and database mark and diameter conform to; 2, when being in debug phase or " understanding " during the stage, site infrare thermal source and coordinates transmission are remembered internal memory by detector, detector memory above-mentioned parameter, and to mark above-mentioned infrared heat source be the normal information source.
3, a kind of method that the infrared radiation source hot imaging is detected according to claim 1 and 2, it is characterized in that delimiting monitoring range by the method that guarded region is marked, and, the time window method finishes the different monitoring zone at different time period regulation detectors by being set, implementation method is: 1, detector is with master controller timing communication the time, to obtain real-time time, inquire about the database of corresponding different time according to the time, thereby know the guarded region of different time; 2, more permanent the guarded region that will not manage is set, the infrared heat source that detector is found at guarded region all can not accepted.
4, a kind of method that the infrared radiation source hot imaging is detected according to claim 1 and 2, it is characterized in that detector adopts the equivalent mode to describe infrared heat source power, diameter and the area and the temperature of detector measuring and calculating infrared heat source are just represented the power of heat source equivalent with the data of its gained that multiplies each other.
5, a kind of method that the infrared radiation source hot imaging is detected according to claim 3, it is characterized in that detector adopts the equivalent mode to describe infrared heat source power, diameter and the area and the temperature of detector measuring and calculating infrared heat source are just represented the power of heat source equivalent with the data of its gained that multiplies each other.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031418368A CN100425959C (en) | 2003-07-25 | 2003-07-25 | Infrared source heat image detecting method |
| PCT/CN2004/000857 WO2005010842A1 (en) | 2003-07-25 | 2004-07-23 | Method and device for detecting infrared sources |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031418368A CN100425959C (en) | 2003-07-25 | 2003-07-25 | Infrared source heat image detecting method |
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| CN1487274A CN1487274A (en) | 2004-04-07 |
| CN100425959C true CN100425959C (en) | 2008-10-15 |
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| CNB031418368A Expired - Fee Related CN100425959C (en) | 2003-07-25 | 2003-07-25 | Infrared source heat image detecting method |
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| WO (1) | WO2005010842A1 (en) |
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| US9303138B2 (en) * | 2011-09-21 | 2016-04-05 | Exxonmobil Chemical Patents Inc. | Elastomeric composition for pharmaceutical articles |
| CN102682547A (en) * | 2012-05-29 | 2012-09-19 | 昆山锐芯微电子有限公司 | Warning system |
| CN102680111B (en) * | 2012-06-01 | 2014-12-03 | 武汉迈迪克光电有限责任公司 | Infrared thermal imager capable of measuring heating area of object and measuring method thereof |
| CN104376663B (en) * | 2013-08-16 | 2017-04-19 | 国家电网公司 | Small animal invasion monitoring method, device and system |
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| CN105606224B (en) * | 2015-12-24 | 2017-03-22 | 华中科技大学 | Underwater heat source detection and location method based on water body hierarchical filtering |
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| CN1487274A (en) | 2004-04-07 |
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