CN202306757U - Embedded flame detection device based on double-waveband - Google Patents
Embedded flame detection device based on double-waveband Download PDFInfo
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- CN202306757U CN202306757U CN2011202114403U CN201120211440U CN202306757U CN 202306757 U CN202306757 U CN 202306757U CN 2011202114403 U CN2011202114403 U CN 2011202114403U CN 201120211440 U CN201120211440 U CN 201120211440U CN 202306757 U CN202306757 U CN 202306757U
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Abstract
The utility model relates to an embedded flame detection device based on double-waveband, which is installed in a fire alarm system of a large space building and comprises a double-waveband video acquiring unit, an image decoder, a central processing unit, a field programmable gata array (FPGA) co-processing unit and an image coder, wherein the double-waveband video acquiring unit outputs acquired analog video signals to the central processing unit through the image decoder. The central processing unit sends data obtained through analysis and processing to the FPGA co-processing unit, the FPGA co-processing unit feeds the data calculated by the FPGA co-processing unit back to the central processing unit, and the image signals processed by the central processing unit are output by the image coder. The embedded flame detection device based on the double-waveband can distinguish a transmitting light source and an interference light source, is strong in resistance to environmental interference, overcomes previous interference caused by the fact that acquired spectral bandwidth is too wide and illumination intensity is too large, has various fire recognition modes, is high in reliability, and effectively reduces false alarm rate.
Description
Technical field
The utility model relates to a kind of image-type fire detection equipment, specifically a kind of embedded flame detection device based on two waveband.
Background technology
The Detection Techniques of volumed space building incipient fire become designer and fire-fighting work person's a topic of very paying close attention to already.Be not difficult in the fire statistics to find that large space fire takes place frequently, particularly serious malignant fire almost all concentrates on the large space place, has related to all trades and professions.Conventional detector is having certain limitation aspect the detection of large space, can not really realize detection and the early warning requirement expected.How can realize large space building incipient fire early warning and flame location, reduce the loss to greatest extent, become the problem that the fire protection sector urgent need will solve.Along with the maturation of computer vision technique, the science and technology of fire product is upgraded, and it no longer is a unattainable difficult problem that large space fire is surveyed.
The suitable protection of smoke detector highly is the space below 12m and the 12m in the conventional detector; It highly is the space below 8m and the 8m that the one-level heat detector is fit to protection; Ultraviolet or infrared flame detector are fit to the space of height below protection 20m and the 20m; Be not difficult to find out that existing detector is only surveyed the condition of a fire below the 20m.And when fire hazard aerosol fog rises to the 13m-23m left and right sides, begin to form smoke stratification and no longer rise, when the aerosol layer collection begins sinking during to certain thickness.And in volumed space building; Receive the influence of spatial altitude and area, thermal air pressure effect in the large space in addition, the thermal current that fire forms is difficult to the arrival roof with smog; Therefore conventional detector can not in time be responded to action, and fire has developed into certain scale when waiting until detector action.In addition; Conventional detector receives the external environment factor affecting big; Under the abominable situation of environment, be subject to disturb; Especially this functional the requirement must not be failed to report phenomenon because of certain wrong report and bring the unnecessary fear of personnel, bring meaningless economic loss in the numerous place of more complicated, personnel in the conference and exhibition center.
Chinese patent (application number: 201020214207.6) disclose a kind of fire video recognition system based on the built-in DSP of high-definition camera; The practical algorithm of fire video identification is cured among the built-in DSP of high-definition camera, can accomplishes analysis and judgement in real time the high-definition image of target area.Design adopts network and RS485 transmission mode that data message is transferred back to alarm center.There is following shortcoming in this system:
1. it is wide to gather spectral bandwidth, and when intensity of illumination was excessive, interference can't be rejected, and is prone to produce wrong report;
2. only gather the visible light part, can't correctly discern when night or light intensity are low flame;
3. the data information transfer mode is single is difficult to and traditional fire-fighting system compatibility;
4. power supply mode is unreasonable, and power devices voltage and fire-fighting system normal voltage can't be compatible;
5. can not detect and the interlocking equipment connection status;
6. the employing digital camera does not have the output of pattern video, is difficult to existing safety-protection system compatible.
Chinese patent (application number: 200510061876.8) disclose, utilized omnibearing vision sensor on-site supervision based on the omnibearing vision sensor fire-disaster monitoring device, with take the photograph omnidirectional images input computing machine constantly carry out Flame Image Process and analysis.There is following shortcoming in this system:
1. adopt computing machine as core processor, do not have the embedded equipment integrated level high, install dumb, poor stability, software security is poor;
2. whole fire monitoring system framework is set up imperfection, has a lot of potential safety hazards;
3. incompatible with traditional fire-fighting system, can't produce interaction relation with existing fire-fighting system;
4. it is wide to gather spectral bandwidth, and when intensity of illumination was excessive, interference can't be rejected, and is prone to produce wrong report;
5. can not detect and the interlocking equipment connection status;
The utility model content
To flexible for installation poor, the poor stability that exists in the prior art, be prone to produce weak point such as wrong report, the technical matters that the utility model will solve provides the embedded flame detection device based on two waveband that a kind of adaptability is strong, antijamming capability is strong, rate of false alarm is low, bearing accuracy is high, compatibility is good.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
The utility model is based on the embedded flame detection device of two waveband; Be installed in the volumed space building fire alarm system; Comprise: two-waveband video collecting unit, image decoder, CPU, FPGA association's processing unit and image encoder, wherein: the two-waveband video collecting unit outputs to CPU with the analog video signal of gathering through image decoder; The data that CPU obtains analyzing and processing are delivered to FPGA association processing unit, and the data after FPGA association processing unit calculates it feed back to CPU again, and the picture signal after the central processing unit for processing is exported through image encoder.
Said two-waveband video collecting unit is for can gather the colour TV camera and the near infrared video camera of color video frequency image signal and near-infrared video picture signal simultaneously.
Said CPU comprise the DSP digital signal processing module and with its two-way memory modules that is connected and data program memory module; The DSP digital signal processing module receives the output signal of image decoder, and DSP digital signal processing module and FPGA association processing unit carry out bidirectional data transfers.
Said FPGA assists processing unit to comprise that data buffering module, noise reduction process module, data segmentation module, unit conversion module, data extraction module and result return module; Wherein the input end of data buffering module links to each other with the DSP digital signal processing module through the multiple data channel, and the output terminal of data buffering module returns and is connected to the DSP digital signal processing module through having noise reduction process module, data segmentation module, unit conversion module, data extraction module and result to return module in order.
The utility model also comprises CAN bus transfer unit, and the DSP digital signal processing module of CPU transmits warning message, control information to the embedded flame detection system based on two waveband in real time through CAN bus transfer unit;
The utility model also comprises input-output unit, and the DSP digital signal processing module of CPU is through input-output unit input and output alerting signal.
The utility model also comprises ethernet module, and the DSP digital signal processing module of CPU is through the ethernet module access network.
The utility model also has wireless transmission unit, and an end carries out two-way the connection with the DSP digital signal processing module of CPU, and the alert data of the other end after with analyzing and processing is wirelessly transmitted to the controlling alarm center.
The utility model also has the real-time clock module of correct demonstration fire time of origin, and it carries out two-way the connection with the DSP digital signal processing module of CPU.
The utility model also has the safe unit that the software systems of preventing are plagiarized, and it carries out two-way the connection with the DSP digital signal processing module of CPU.
The utlity model has following beneficial effect and advantage:
1. the utility model adopts the two waveband video camera, selects the effectively frequency range of collection spectrum automatically according to external condition, has the ability of differentiating transmitting illuminant and jamming light source; Resistivity to environmental disturbances is strong; Remedied in the past because to gather spectral bandwidth wide, when intensity of illumination is excessive and the interference that produces has multiple fire recognition mode; Reliability is high, effectively reduces rate of false alarm;
2. the utility model is owing to adopt embedded technology, and analyzing and processing is independently accomplished by sniffer fully, alleviates server stress, and server can connect up to ten thousand sniffers in theory, and system performance is strong, applied range;
3. the utility model is used multiple field bus technique, is blended in original safety-protection system and fire-fighting system fully, and Co-processor Module is given in the work that complicacy is loaded down with trivial details, realizes the realtime graphic analysis; Show the fire scene image signal when reporting to the police, and record a video automatically, keep in-situ data, be convenient to crash analysis;
4. the device integrated level is high, and built-in two waveband video camera need not extra interpolation video camera; Characteristics such as have that the protection area is big, distance, response speed are fast realize early warning;
5. special occasions can be used GPRS or wireless industrial module, saves wiring.
Description of drawings
Fig. 1 is the embedded flame detection system structured flowchart based on two waveband that comprises the utility model;
Fig. 2 is the embedded flame detection device basic structure block diagram of the utility model based on two waveband;
Fig. 3 is a FPGA association processing unit structured flowchart in the utility model;
Fig. 4 is the utility model structured flowchart;
Fig. 5 is the physical construction synoptic diagram of the utility model.
Embodiment
Below in conjunction with Figure of description the present invention is done further elaboration.
As shown in Figure 1, be applied in the volumed space building based on the embedded flame detection system of two waveband, realize to volumed space building early fire detection, warning, link, send information and image.Embedded flame detection system based on two waveband is made up of based on embedded flame detection device, interlock module, water cannon, the network switch, office terminal, DVR, video wall, Region control case, the alarm host machine of two waveband the utility model.The utility model is a plurality of (1～N); Cover that all need monitor the space of the condition of a fire in the whole building; Carry out flame identification after gathering many group video datas; Through data bus recognition result is transferred to the Region control case, is transferred to alarm host machine after by the Region control case multiplexed detection result being gathered again, give the office terminal so that write down and inquiry through network with recognition result and transmission of video images simultaneously.The utility model is exported to the video image of gathering DVR and is exported to video wall by DVR.Export to the interlock module, the instantaneous water cannon of opening of interlock module when having recognized to produce to report to the police when fire takes place.
As shown in Figure 2; A kind of embedded flame detection device of the utility model based on two waveband; Be installed in the volumed space building fire alarm system; Comprise: two-waveband video collecting unit, image decoder, CPU, FPGA association's processing unit and image encoder; Wherein: the two-waveband video collecting unit is selected the effectively frequency range of collection spectrum automatically according to external condition, and the analog video signal of gathering is connected to image decoder, and image decoder carries out analyzing and processing with the DSP digital signal processing module that decoded picture signal outputs to CPU; The data that CPU obtains analyzing and processing are delivered to FPGA association processing unit; Data after FPGA association processing unit calculates it feed back to CPU again; Picture signal after the central processing unit for processing is exported through image encoder; Except that the DSP digital signal processing module, CPU inside also has memory modules SDRAM and data program memory module, i.e. flash memory FLASH.
Two-waveband video collecting unit colour TV camera is gathered visible light and Near-infrared Double frequency range, and detector can be selected the effectively frequency range of collection spectrum automatically according to conditions such as the power of light, flame unique characteristics, external interference.Reach clear identification flame image and removed the purpose of disturbing.Image decoder receives the video analog signal of two-waveband video collecting unit; After decoding, export the DSP digital signal processing module of CPU to; The DSP digital signal processing module at first receives the two-way video data synchronously; The two-way video data almost is transported to memory modules simultaneously and carries out the secondary video copying data; Whole carrying two-way video data process makes the two-path video data sync carry out as much as possible; In order to avoid late time data is handled the two-path video frame not synchronously, the video data that secondary is copied carries out analyzing and processing, has adopted multinomial new and high technologies such as Flame Image Process, computer vision, artificial intelligence to reach flame accurately identification and location; The data that CPU obtains above-mentioned analyzing and processing are delivered to FPGA association processing unit and are assisted calculating, and CPU result the most at last exports image encoder to.
As shown in Figure 3; FPGA association processing unit comprises the data buffering module; Its output terminal links to each other with the DSP digital signal processing module through the multiple data channel, and the output terminal of data buffering module links to each other with the DSP digital signal processing module through having noise reduction process module, data segmentation module, unit conversion module, data extraction module and result to return module in order.
As shown in Figure 4, in order to guarantee the copyright safety of system, guarantee hardware system whole world uniqueness, prevent that software systems from being plagiarized, the utility model inside is connected to safe unit, and it carries out two-way the connection with the DSP digital signal processing module of CPU.
The utility model can also have wireless transport module, and the alert data after its analyzing and processing is wirelessly transmitted to the controlling alarm center.
The utility model can also have ethernet module, and the DSP digital signal processing module of CPU is through the ethernet module access network, so that in LAN or wide area network, use this device;
The utility model can also be connected to real-time clock module in flame detection device inside, and it carries out two-way the connection with the DSP digital signal processing module of CPU, so that correctly show the fire time of origin;
Said flame detection device inside is connected to CAN bus transfer unit, and the DSP digital signal processing module of CPU transmits warning message, control information to the embedded flame detection system based on two waveband in real time through CAN bus transfer unit;
Said flame detection device inside is connected to input-output unit, and the DSP digital signal processing module of CPU connects other panalarms through the output of reporting to the police and produces interaction relation through the input-output unit output alarm signal;
Said flame detection device inside is connected to indicating circuit, is located at the output terminal of the DSP digital signal processing module of CPU, is used for duty, power supply status, the interlocking equipment connection status of display system.
The utility model adopts embedded architecture, is on through the research basis to heat, look, shape, spectrum and the kinetic characteristic of flame, a kind of two waveband fire recognition device based on chromatic image and near infrared image of proposition.The embedded flame detection device of two waveband by colored and near infrared video camera as its front-end equipment.Colour TV camera and near infrared video camera adopt frequency spectrum to respond CCD or the COMS imageing sensor of scope 400nm～1200nm, can gather color video frequency image signal and near-infrared video picture signal simultaneously.Colour TV camera is gathered visible light frequency band, near infrared camera acquisition near infrared frequency range.Daytime or have under the illumination condition employing colour TV camera carry out flame and smog identification.The near infrared video camera can obtain flame image clearly under any illumination condition, be adapted at unglazed photograph or low light most and obtain flame image clearly according under the condition, and be used to take the picture rich in detail of alcohol type burning or substance combustion.Light is crossed the deficiency that can also remedy colour TV camera when strong, eliminates visible light and disturbs.Software processes adopts multinomial new and high technologies such as Flame Image Process, computer vision, artificial intelligence, realizes the detection and the two-dimensional space flame positioning function of volumed space building incipient fire.Anti-environmental disturbances is fit to various light condition.Have that command range is far away, the protection area is big, response speed is fast, characteristics such as highly sensitive, good reliability, be a kind of high performance-price ratio, high-intelligentization, highly integrated intelligent flame sniffer.Existing fire detecting arrangement is comprised that a type infra red flame sniffer, air suction type smoke sniffer, some type carbon monoxide fire detecting arrangement form additional.
As shown in Figure 5; The physical construction of the utility model is divided into four module, comprising: camera lens module 1, two-waveband video collecting unit 2, image processing module 3 (comprising like Fig. 2 or other parts except that the two-waveband video collecting unit shown in Figure 4) and interface module 4.Camera lens module 1 comprises two infrared tight shots; Be presented on the light image that is observed target on the target surface of video camera; Two waveband image capture module 2 transfers the two waveband light signal to exports to image processing module 3 with the analog image form after digital signal is handled; 3 pairs of video images of image processing module carry out analyzing and processing, and analysis result is transferred to interface module 4.
The utility model can be realized volumed space building is carried out early fire detection, warning, interlock based on said structure.The utility model adopts embedded platform technology and computer vision technique and optical technology; CPU is accomplished main analyzing and processing task; FPGA association processing unit connects the DSP digital signal processing module through the multiple data channel and accomplishes auxiliary calculation task; The two waveband camera is accomplished the IMAQ of different-waveband, real-time on-the-spot industrial bus technology.
FPGA association processing unit comprises basic logic part and auxiliary calculating section.Auxiliary calculating section to data progressively through following operation: data buffering preparation, noise reduction process, data are cut apart, unit conversion, data extract, result's transmission; Image decoder is responsible for the collection of digital video information, submits to the DSP digital signal processing module; Image encoder is responsible for exporting processed video information, and ethernet module, wireless transport module, CAN bus transfer module are accomplished the exchanges data with fire control center, submit detection information to.
In the present embodiment; Safe unit adopts the special-purpose secure microprocessor of the high-end safety intelligent card of ESAM; Meet the ISO7816 communications protocol; Its inside comprises encrypting and decrypting algoritic module and secure data storage module, Safety Design such as internal data self-destruction after having anti-tamper design, unique sequence number and may detect external attack.The utility model with secure microprocessor O mouth connect PLD (being the basic logic unit of FPGA association processing unit), the internal register through PLD is mapped to the external memory interface of DSP and operates.And the buffer status through configuration of programmable logic devices, control read-write sequence and the state that changes secure microprocessor.Ciphering process adopts random number to produce random key, the one-time pad key, and concealed encrypted information, security is high.
Because the utility model adopts embedded technology, analyzing and processing is independently accomplished by sniffer fully, makes the total system integrated level high, and built-in two waveband video camera need not extra interpolation video camera.The utility model is installed simple, can carry out continuous condition of a fire monitoring, condition of a fire location, condition of a fire identification under various conditions, and can incorporate existing supervisory system and fire-fighting system, real detection, the early warning requirement that realizes expection.
Claims (10)
1. embedded flame detection device based on two waveband; Be installed in the volumed space building fire alarm system; It is characterized in that comprising: two-waveband video collecting unit, image decoder, CPU, FPGA association's processing unit and image encoder, wherein: the two-waveband video collecting unit outputs to CPU with the analog video signal of gathering through image decoder; The data that CPU obtains analyzing and processing are delivered to FPGA association processing unit, and the data after FPGA association processing unit calculates it feed back to CPU again, and the picture signal after the central processing unit for processing is exported through image encoder.
2. by the described embedded flame detection device based on two waveband of claim 1, it is characterized in that: said two-waveband video collecting unit is for can gather the colour TV camera and the near infrared video camera of color video frequency image signal and near-infrared video picture signal simultaneously.
3. by the described embedded flame detection device of claim 1 based on two waveband; It is characterized in that: said CPU comprise the DSP digital signal processing module and with its two-way memory modules that is connected and data program memory module; The DSP digital signal processing module receives the output signal of image decoder, and DSP digital signal processing module and FPGA association processing unit carry out bidirectional data transfers.
4. by the described embedded flame detection device of claim 1 based on two waveband; It is characterized in that: said FPGA assists processing unit to comprise that data buffering module, noise reduction process module, data segmentation module, unit conversion module, data extraction module and result return module; Wherein the input end of data buffering module links to each other with the DSP digital signal processing module through the multiple data channel, and the output terminal of data buffering module returns and is connected to the DSP digital signal processing module through having noise reduction process module, data segmentation module, unit conversion module, data extraction module and result to return module in order.
5. by the described embedded flame detection device of claim 1 based on two waveband; It is characterized in that: also comprise CAN bus transfer unit, the DSP digital signal processing module of CPU transmits warning message, control information to the embedded flame detection system based on two waveband in real time through CAN bus transfer unit.
6. by the described embedded flame detection device based on two waveband of claim 1, it is characterized in that: also comprise input-output unit, the DSP digital signal processing module of CPU is through input-output unit input and output alerting signal.
7. by the described embedded flame detection device based on two waveband of claim 1, it is characterized in that: also comprise ethernet module, the DSP digital signal processing module of CPU is through the ethernet module access network.
8. by the described embedded flame detection device of claim 1 based on two waveband; It is characterized in that: also have wireless transmission unit; One end carries out two-way the connection with the DSP digital signal processing module of CPU, and the alert data of the other end after with analyzing and processing is wirelessly transmitted to the controlling alarm center.
9. by the described embedded flame detection device based on two waveband of claim 1, it is characterized in that: also have the real-time clock module of correct demonstration fire time of origin, it carries out two-way the connection with the DSP digital signal processing module of CPU.
10. by the described embedded flame detection device based on two waveband of claim 1, it is characterized in that: also have the safe unit that the software systems of preventing are plagiarized, it carries out two-way the connection with the DSP digital signal processing module of CPU.
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| CN2011202114403U CN202306757U (en) | 2011-06-21 | 2011-06-21 | Embedded flame detection device based on double-waveband |
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| CN2011202114403U CN202306757U (en) | 2011-06-21 | 2011-06-21 | Embedded flame detection device based on double-waveband |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104599426A (en) * | 2013-11-01 | 2015-05-06 | 航天海鹰安全技术工程有限公司 | Forest fire prevention embedded control system |
| CN107094224A (en) * | 2016-09-14 | 2017-08-25 | 格科微电子（上海）有限公司 | The manufacture method and terminal process equipment of camera module |
| CN109147259A (en) * | 2018-11-20 | 2019-01-04 | 武汉理工光科股份有限公司 | A kind of remote fire detection system and method based on video image |
| CN109525768A (en) * | 2018-12-29 | 2019-03-26 | 深圳市卓信创驰技术有限公司 | A kind of industrial camera |
| CN110136391A (en) * | 2019-05-10 | 2019-08-16 | 国网江苏省电力有限公司电力科学研究院 | A kind of energy-accumulating power station fire early-warning system and method |
| CN112911279A (en) * | 2021-02-01 | 2021-06-04 | 航天科工防御技术研究试验中心 | Detection equipment and detection system based on multiple image sensors |
-
2011
- 2011-06-21 CN CN2011202114403U patent/CN202306757U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104599426A (en) * | 2013-11-01 | 2015-05-06 | 航天海鹰安全技术工程有限公司 | Forest fire prevention embedded control system |
| CN107094224A (en) * | 2016-09-14 | 2017-08-25 | 格科微电子（上海）有限公司 | The manufacture method and terminal process equipment of camera module |
| CN109147259A (en) * | 2018-11-20 | 2019-01-04 | 武汉理工光科股份有限公司 | A kind of remote fire detection system and method based on video image |
| CN109525768A (en) * | 2018-12-29 | 2019-03-26 | 深圳市卓信创驰技术有限公司 | A kind of industrial camera |
| CN110136391A (en) * | 2019-05-10 | 2019-08-16 | 国网江苏省电力有限公司电力科学研究院 | A kind of energy-accumulating power station fire early-warning system and method |
| CN112911279A (en) * | 2021-02-01 | 2021-06-04 | 航天科工防御技术研究试验中心 | Detection equipment and detection system based on multiple image sensors |
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Granted publication date: 20120704 Termination date: 20140621 |
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