CN202662124U - Image and multi-waveband infrared-ultraviolet combined type fire detecting system - Google Patents
Image and multi-waveband infrared-ultraviolet combined type fire detecting system Download PDFInfo
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- CN202662124U CN202662124U CN 201220303150 CN201220303150U CN202662124U CN 202662124 U CN202662124 U CN 202662124U CN 201220303150 CN201220303150 CN 201220303150 CN 201220303150 U CN201220303150 U CN 201220303150U CN 202662124 U CN202662124 U CN 202662124U
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Abstract
The utility model provides an image and multi-waveband infrared-ultraviolet combined type fire detecting system. The system comprises a digital signal processor and further comprises an image sensor and/or a multi-waveband infrared detecting channel and/or a multi-waveband ultraviolet detecting channel; and the digital signal processor is respectively connected with the image sensor, the multi-waveband infrared detecting channel and the multi-waveband ultraviolet detecting channel. Therefore, an image prober, the multi-waveband infrared detecting channel and the multi-waveband ultraviolet detecting channel are combined together; when one prober emits fire alarm signals, the probing conditions of the other two probers can be searched; if the total fire occurrence rate obtained by probing of the three probers is higher than a pre-set threshold value, the alarming signals can be emitted, so that the reliability of the probing system in the fire probing can be improved.
Description
Technical field
The utility model belongs to the fire detection technology field, is specifically related to the compound fire detection system of a kind of image and multiband infrared and ultraviolet.
Background technology
At present, fire detector comprises image-type video fire hazard detector, multi-band infrared detector and multiband ultraviolet detector.
For image-type video fire hazard detector, owing to be that simple employing video identification algorithm is analyzed video image, specifically comprise motion, gray scale and the brightness of flame or smog are analyzed, when the conversion frequency of the motion feature of certain subregion of analyzed video image or brightness or gray scale meets value range in the fire characteristic storehouse, then differentiate for the fire generation is arranged.The major defect that this kind detection method exists is: when monitored scene has personnel to walk about, perhaps have to produce the object that light changes, during such as large screen display, can produce larger interference to detector, so detector fire alarm rate of false alarm is higher.
And for independent multi-band infrared detector or multiband ultraviolet detector, when monitored on-the-spot other stronger light sources of existence, for example: when solar radiation or electro-welding arc, can produce larger interference to detector, so detector fire alarm rate of false alarm is higher.In addition, multi-band infrared detector or multiband ultraviolet detector all are based on the detection to flame, that is to say, only have when monitored scene has produced naked light, and detector just can send fire alarm, therefore, do not have the warning function of during Initial Stage of Fire.
The utility model content
Defective for the prior art existence, the utility model provides a kind of image and the compound fire detection system of multiband infrared and ultraviolet, image detector, multi-band infrared detector and multiband ultraviolet detector are compound to together, when a kind of detector sends fire alarm, can inquire about the detection event of other two kinds of detectors, only have when two or more detectors all detects breaking out of fire, just can send alerting signal, thereby improved the reliability of detection system to detection.
The technical solution adopted in the utility model is as follows:
The utility model provides a kind of image and the compound fire detection system of multiband infrared and ultraviolet, comprising: digital signal processor; Also comprise imageing sensor and/or multiband infrared acquisition passage and/or multiband ultraviolet detection passage; Described digital signal processor is connected with described imageing sensor, described multiband infrared acquisition passage and the multiband ultraviolet detection passage of being connected respectively.
Preferably, described imageing sensor is cmos image sensor, and described digital signal processor is the DM3730 digital signal processor.
Preferably, described multiband infrared acquisition passage comprises infrared photoelectric sensor, the first operational amplifier and the first analog to digital conversion circuit; The output terminal of described infrared photoelectric sensor is electrically connected with the input end of described the first operational amplifier, the output terminal of described the first operational amplifier is electrically connected with the input end of described the first analog to digital conversion circuit, and the output terminal of described the first analog to digital conversion circuit is electrically connected with the first input end of described digital signal processor; Described multiband ultraviolet detection passage comprises ultraviolet light photo sensor, the second operational amplifier and the second analog to digital conversion circuit; The output terminal of described ultraviolet light photo sensor is electrically connected with the input end of described the second operational amplifier, the output terminal of described the second operational amplifier is electrically connected with the input end of described the second analog to digital conversion circuit, and the output terminal of described the second analog to digital conversion circuit is electrically connected with the second input end of described digital signal processor.
Preferably, described infrared photoelectric sensor is the infrared light receiver; Described ultraviolet light photo sensor is the ultraviolet light receiver.
Preferably, described infrared light receiver is LIE245 infrared light receiver; Described ultraviolet light receiver is R2828 ultraviolet light receiver.
Preferably, described the first analog to digital conversion circuit and described the second analog to digital conversion circuit are the AD0809 analog to digital conversion circuit.
Preferably, also comprise: storer and/or communication module and/or on-the-spot pilot lamp and/or power supervisor; Described digital signal processor is connected with described storer, described communication module, described on-the-spot pilot lamp and the power supervisor of being connected respectively.
Preferably, described storer is data-carrier store and/or program storage; Described communication module is ethernet transceiver and/or CAN transceiver.
Preferably, described storer is nonvolatile memory.
Preferably, also comprise: temperature sensor and well heater; Described digital signal processor respectively with described temperature sensor be connected well heater and be connected.
The utility model also provides a kind of method of using above-mentioned image and the compound fire detection system of multiband infrared and ultraviolet, may further comprise the steps:
S1, described digital signal processor receive the video image of the monitoring area that described imageing sensor collects; And/or
Described digital signal processor receives the infrared signal of the described monitoring area that described multiband infrared acquisition passage uploads; And/or
Described digital signal processor receives the UV signal of the described monitoring area that described multiband ultraviolet detection passage uploads;
S2, described digital signal processor is analyzed described video image, obtains the first probable value that fire alarm occurs in described monitoring area;
Described digital signal processor is analyzed described infrared signal, obtains the second probable value that fire alarm occurs in described monitoring area;
Described digital signal processor is analyzed described UV signal, obtains the 3rd probable value that fire alarm occurs in described monitoring area;
S3, described digital signal processor carries out read group total to described the first probable value, described the second probable value and described the 3rd probable value, obtain final general probability value, then judge that whether described general probability value is greater than predetermined threshold value, if judged result is yes, then draw the conclusion of described monitoring area breaking out of fire.
Preferably, described digital signal processor is specially described video image analysis: described digital signal processor is analyzed described video image based on the motion feature of smog and the blinking characteristics of flame.
Preferably, described digital signal processor is analyzed specifically described video image based on the motion feature of smog and is comprised:
Described digital signal processor obtains the video image that is in different described monitoring areas constantly;
For each Zhang Suoshu video image, carry out binary conversion treatment, obtain the binary map video image;
Relatively each is positioned at different described binary map video images constantly, the identical point of each Zhang Suoshu binary map video image is carried out shielding processing, thereby identify the Emergence and Development of smog and the process of motion;
Described digital signal processor is analyzed specifically described video image based on the blinking characteristics of flame and is comprised:
Described digital signal processor obtains the video image that is in different described monitoring areas constantly;
For each Zhang Suoshu video image, carry out binary conversion treatment, obtain the binary map video image;
Relatively each is positioned at different described binary map video images constantly, and the identical point of each Zhang Suoshu binary map video image is carried out shielding processing, obtains the video image after the shielding processing;
Analyze each picture point of the video image after the described shielding processing in difference motion state constantly, described motion state comprises the amplitude of variation of described picture point and the flicker frequency of picture point; Only have when the motion state of described picture point meets following kinetic characteristic, then described picture point is marked; Described kinetic characteristic is that the amplitude of variation of described picture point surpasses predetermined threshold value, and the flicker frequency of described picture point is in the predeterminated frequency interval;
All picture point of mark are carried out expansion process, and the picture point of each described mark is linked to be a zone; Calculating is paid close attention in described zone, when the picture point in the described zone meets described kinetic characteristic, and, when the brightness in described zone and/or color also meet preset value respectively, then draw the conclusion that described monitoring area has flame to occur.
Preferably, described predeterminated frequency interval is 8Hz-12Hz.
Preferably, after the S3, also comprise:
S4, described digital signal processor sends alerting signal by described communication module to host computer or fire alarm control unit; And/or described digital signal processor is lighted described on-the-spot pilot lamp; And/or described digital signal processor stores described video image, and in the described video image joining day stamp, then will deposit in the described storer with the described video image of timestamp.
Preferably, also comprise:
Described temperature sensor gathers the current temperature value of described image and the compound fire detection system of multiband infrared and ultraviolet, and described current temperature value is passed to described digital signal processor;
Described digital signal processor judges whether described current temperature value is lower than the preset temperature minimum value, if judged result is yes, then opens described well heater; Described digital signal processor judges whether described current temperature value is higher than the preset temperature maximal value, if judged result is yes, then closes described well heater.
The beneficial effects of the utility model are as follows:
The compound fire detection system of the image that the utility model provides and multiband infrared and ultraviolet and method, in carrying out the analysis deterministic process of fire, combine imageing sensor, multiband infrared acquisition and three kinds of detection modes of multiband ultraviolet detection, only have when at least two kinds of detection modes all draw the conclusion of breaking out of fire, detection system just enters the fire alarm handling procedure, send alerting signal, thereby improved the reliability of reporting to the police; And, in the process that video image is analyzed, can also analyze whether produce smog, realized the function of early warning.
Description of drawings
The image that Fig. 1 provides for the utility model and the structural representation of the compound fire detection system of multiband infrared and ultraviolet.
Fig. 2 is the normal flicker frequency variation diagram of picture point;
Fig. 3 is when breaking out of fire, the flicker frequency variation diagram of picture point.
Embodiment
The image that the utility model is provided below in conjunction with accompanying drawing and the compound fire detection system of multiband infrared and ultraviolet and method describe in detail:
As shown in Figure 1, the utility model provides a kind of image and the compound fire detection system of multiband infrared and ultraviolet, comprising: digital signal processor; Also comprise imageing sensor and/or multiband infrared acquisition passage and/or multiband ultraviolet detection passage; Described digital signal processor is connected with described imageing sensor, described multiband infrared acquisition passage and the multiband ultraviolet detection passage of being connected respectively.Wherein, imageing sensor can be cmos image sensor, and digital signal processor can be the DM3730 digital signal processor.Multiband infrared acquisition passage comprises infrared photoelectric sensor, the first operational amplifier and the first analog to digital conversion circuit; The output terminal of described infrared photoelectric sensor is electrically connected with the input end of described the first operational amplifier, the output terminal of described the first operational amplifier is electrically connected with the input end of described the first analog to digital conversion circuit, and the output terminal of described the first analog to digital conversion circuit is electrically connected with the first input end of described digital signal processor; Described multiband ultraviolet detection passage comprises ultraviolet light photo sensor, the second operational amplifier and the second analog to digital conversion circuit; The output terminal of described ultraviolet light photo sensor is electrically connected with the input end of described the second operational amplifier, the output terminal of described the second operational amplifier is electrically connected with the input end of described the second analog to digital conversion circuit, and the output terminal of described the second analog to digital conversion circuit is electrically connected with the second input end of described digital signal processor.Infrared photoelectric sensor is the infrared light receiver; Described ultraviolet light photo sensor is the ultraviolet light receiver.The infrared light receiver can adopt LIE245 infrared light receiver; The ultraviolet light receiver can adopt R2828 ultraviolet light receiver.The first analog to digital conversion circuit and the second analog to digital conversion circuit all can adopt the AD0809 analog to digital conversion circuit.
In addition, the compound fire detection system of the image that the utility model provides and multiband infrared and ultraviolet also comprises: storer and/or communication module and/or on-the-spot pilot lamp and/or power supervisor; Described digital signal processor is connected with described storer, described communication module, described on-the-spot pilot lamp and the power supervisor of being connected respectively.Storer can be data-carrier store and/or program storage; Communication module can be ethernet transceiver and/or CAN transceiver.Storer is nonvolatile memory.Also comprise: temperature sensor and well heater; Described digital signal processor respectively with described temperature sensor be connected well heater and be connected.
The utility model also provides a kind of method of using above-mentioned image and the compound fire detection system of multiband infrared and ultraviolet, may further comprise the steps:
S1, described digital signal processor receive the video image of the monitoring area that described imageing sensor collects; And/or
Described digital signal processor receives the infrared signal of the described monitoring area that described multiband infrared acquisition passage uploads; And/or
Described digital signal processor receives the UV signal of the described monitoring area that described multiband ultraviolet detection passage uploads;
The described digital signal processor of S2 is analyzed described video image, obtains the first probable value that fire alarm occurs in described monitoring area;
Wherein, digital signal processor is specially described video image analysis: described digital signal processor is analyzed described video image based on the motion feature of smog and the blinking characteristics of flame.Further, digital signal processor is analyzed specifically described video image based on the motion feature of smog and comprised: digital signal processor obtains the video image that is in different described monitoring areas constantly;
For each Zhang Suoshu video image, carry out binary conversion treatment, obtain the binary map video image; Carrying out binary conversion treatment can be in the following ways: set following formula:
f(x)＝{x≥A，f(x)＝1；x＜A，f(x)＝0}
With whole video image pointwise by formula the algorithm of (1) carry out computing, for example, can set A=200; Therefore, gray-scale value is 0 less than the numerical value of 200 picture point, is black; And gray-scale value is 1 more than or equal to the numerical value of 200 picture point, is white; Therefore, by above-mentioned processing, whole video image is converted into the contrast figure of black and white.Owing to only carried out binary conversion treatment, therefore, light tone is regional more in whole video image, and the characteristic of smog is also not obvious.So, also need relatively each to be positioned at different described binary map video images constantly, the identical point of each Zhang Suoshu binary map video image is carried out shielding processing, thereby very significantly in video image, demonstrate the region of variation of smog.Repeat above-mentioned analytic process, just can identify the Emergence and Development of smog and the process of motion, thereby realize the detection to smog, realized the early warning of fire.
Blinking characteristics based on flame is similar to above-mentioned smog identifying to the process of video image analysis, specifically comprises:
Described digital signal processor obtains the video image that is in different described monitoring areas constantly;
For each Zhang Suoshu video image, carry out binary conversion treatment, obtain the binary map video image;
Relatively each is positioned at different described binary map video images constantly, and the identical point of each Zhang Suoshu binary map video image is carried out shielding processing, obtains the video image after the shielding processing;
Analyze each picture point of the video image after the described shielding processing in difference motion state constantly, described motion state comprises the amplitude of variation of described picture point and the flicker frequency of picture point; Only have when the motion state of described picture point meets following kinetic characteristic, then described picture point is marked; Described kinetic characteristic is that the amplitude of variation of described picture point surpasses predetermined threshold value, and the flicker frequency of described picture point is in the predeterminated frequency interval; Concrete, when not having flame to produce, the normal flicker frequency of a picture point is as shown in Figure 2, relative amplitude of variation between different flicker frequencies constantly is less, and flicker frequency is random variation in certain scope, does not have regularity, therefore, such point can be left in the basket in the data filtering process.
But, if the amplitude of variation of certain picture point is larger, and, the flicker frequency of picture point is characteristic frequency, and for example: between the 8Hz-12Hz, then such picture point meets the flame flicking frequency requirement, as shown in Figure 3, therefore, such picture point can be marked.
All picture point of mark are carried out expansion process, and the picture point of each described mark is linked to be a zone; Calculating is paid close attention in described zone, when the picture point in the described zone meets described kinetic characteristic, and, when the brightness in described zone and/or color also meet preset value respectively, then draw the conclusion that described monitoring area has flame to occur.
Described digital signal processor is analyzed described infrared signal, obtains the second probable value that fire alarm occurs in described monitoring area;
Described digital signal processor is analyzed described UV signal, obtains the 3rd probable value that fire alarm occurs in described monitoring area;
S3, described digital signal processor carries out read group total to described the first probable value, described the second probable value and described the 3rd probable value, obtain final general probability value, then judge that whether described general probability value is greater than predetermined threshold value, if judged result is yes, then draw the conclusion of described monitoring area breaking out of fire.
S4, described digital signal processor sends alerting signal by described communication module to host computer or fire alarm control unit; And/or described digital signal processor is lighted described on-the-spot pilot lamp; And/or described digital signal processor stores described video image, and in the described video image joining day stamp, then will deposit in the described storer with the described video image of timestamp.
In addition, for improving the job stability of system, also comprise the steps:
Described temperature sensor gathers the current temperature value of described image and the compound fire detection system of multiband infrared and ultraviolet, and described current temperature value is passed to described digital signal processor;
Described digital signal processor judges whether described current temperature value is lower than the preset temperature minimum value, if judged result is yes, then opens described well heater; Described digital signal processor judges whether described current temperature value is higher than the preset temperature maximal value, if judged result is yes, then closes described well heater.Wherein, preset temperature minimum value and preset temperature maximal value all can be 0.
Therefore, in the utility model, in carrying out the analysis deterministic process of fire, combine imageing sensor, multiband infrared acquisition and three kinds of detection modes of multiband ultraviolet detection, only have when at least two kinds of detection modes all draw the conclusion of breaking out of fire, detection system just enters the fire alarm handling procedure, sends alerting signal, thereby has improved the reliability of reporting to the police; And, in the process that video image is analyzed, can also analyze whether produce smog, realized the function of early warning.
The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be looked protection domain of the present utility model.
Claims (10)
1. an image and the compound fire detection system of multiband infrared and ultraviolet is characterized in that, comprising: digital signal processor; Also comprise imageing sensor and/or multiband infrared acquisition passage and/or multiband ultraviolet detection passage; Described digital signal processor is connected with described imageing sensor, described multiband infrared acquisition passage and the multiband ultraviolet detection passage of being connected respectively.
2. the compound fire detection system of image according to claim 1 and multiband infrared and ultraviolet is characterized in that, described imageing sensor is cmos image sensor, and described digital signal processor is the DM3730 digital signal processor.
3. the compound fire detection system of image according to claim 1 and multiband infrared and ultraviolet is characterized in that, described multiband infrared acquisition passage comprises infrared photoelectric sensor, the first operational amplifier and the first analog to digital conversion circuit; The output terminal of described infrared photoelectric sensor is electrically connected with the input end of described the first operational amplifier, the output terminal of described the first operational amplifier is electrically connected with the input end of described the first analog to digital conversion circuit, and the output terminal of described the first analog to digital conversion circuit is electrically connected with the first input end of described digital signal processor; Described multiband ultraviolet detection passage comprises ultraviolet light photo sensor, the second operational amplifier and the second analog to digital conversion circuit; The output terminal of described ultraviolet light photo sensor is electrically connected with the input end of described the second operational amplifier, the output terminal of described the second operational amplifier is electrically connected with the input end of described the second analog to digital conversion circuit, and the output terminal of described the second analog to digital conversion circuit is electrically connected with the second input end of described digital signal processor.
4. the compound fire detection system of image according to claim 3 and multiband infrared and ultraviolet is characterized in that, described infrared photoelectric sensor is the infrared light receiver; Described ultraviolet light photo sensor is the ultraviolet light receiver.
5. the compound fire detection system of image according to claim 4 and multiband infrared and ultraviolet is characterized in that, described infrared light receiver is LIE245 infrared light receiver; Described ultraviolet light receiver is R2828 ultraviolet light receiver.
6. the compound fire detection system of image according to claim 3 and multiband infrared and ultraviolet is characterized in that, described the first analog to digital conversion circuit and described the second analog to digital conversion circuit are the AD0809 analog to digital conversion circuit.
7. the compound fire detection system of image according to claim 1 and multiband infrared and ultraviolet is characterized in that, also comprises: storer and/or communication module and/or on-the-spot pilot lamp and/or power supervisor; Described digital signal processor is connected with described storer, described communication module, described on-the-spot pilot lamp and the power supervisor of being connected respectively.
8. the compound fire detection system of image according to claim 7 and multiband infrared and ultraviolet is characterized in that, described storer is data-carrier store and/or program storage; Described communication module is ethernet transceiver and/or CAN transceiver.
9. the compound fire detection system of image according to claim 8 and multiband infrared and ultraviolet is characterized in that, described storer is nonvolatile memory.
10. the compound fire detection system of image according to claim 1 and multiband infrared and ultraviolet is characterized in that, also comprises: temperature sensor and well heater; Described digital signal processor respectively with described temperature sensor be connected well heater and be connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220303150 CN202662124U (en) | 2012-06-25 | 2012-06-25 | Image and multi-waveband infrared-ultraviolet combined type fire detecting system |
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| CN 201220303150 CN202662124U (en) | 2012-06-25 | 2012-06-25 | Image and multi-waveband infrared-ultraviolet combined type fire detecting system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102708647A (en) * | 2012-06-25 | 2012-10-03 | 北京中恩时代科技有限责任公司 | Image and multi-band infrared-ultraviolet compound fire disaster detection system and method |
| CN106408843A (en) * | 2016-10-09 | 2017-02-15 | 九江中船消防设备有限公司 | Three-band infrared flame detector having automatic calibration function |
| CN111275951A (en) * | 2019-12-25 | 2020-06-12 | 中国移动通信集团江苏有限公司 | Information processing method, device and equipment and computer storage medium |
-
2012
- 2012-06-25 CN CN 201220303150 patent/CN202662124U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102708647A (en) * | 2012-06-25 | 2012-10-03 | 北京中恩时代科技有限责任公司 | Image and multi-band infrared-ultraviolet compound fire disaster detection system and method |
| CN102708647B (en) * | 2012-06-25 | 2013-11-20 | 北京中恩时代科技有限责任公司 | Image and multi-band infrared-ultraviolet compound fire disaster detection system and method |
| CN106408843A (en) * | 2016-10-09 | 2017-02-15 | 九江中船消防设备有限公司 | Three-band infrared flame detector having automatic calibration function |
| CN106408843B (en) * | 2016-10-09 | 2019-08-02 | 九江中船消防设备有限公司 | A kind of three wave band infrared flame detectors having automatic calibration function |
| CN111275951A (en) * | 2019-12-25 | 2020-06-12 | 中国移动通信集团江苏有限公司 | Information processing method, device and equipment and computer storage medium |
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