CN102682547A - Warning system - Google Patents

Warning system Download PDF

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Publication number
CN102682547A
CN102682547A CN2012101695437A CN201210169543A CN102682547A CN 102682547 A CN102682547 A CN 102682547A CN 2012101695437 A CN2012101695437 A CN 2012101695437A CN 201210169543 A CN201210169543 A CN 201210169543A CN 102682547 A CN102682547 A CN 102682547A
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China
Prior art keywords
point
image
infrared emission
coordinate
infrared
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CN2012101695437A
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Chinese (zh)
Inventor
潘徐君
郝秀杰
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Brigates Microelectronic Co Ltd
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Brigates Microelectronic Co Ltd
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Priority to CN2012101695437A priority Critical patent/CN102682547A/en
Publication of CN102682547A publication Critical patent/CN102682547A/en
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Abstract

The technical scheme of the invention provides a warning system, which comprises a lens, a preset number of infrared emitting points, an optical filter, an image sensor and a warning unit, wherein the lens is used for converging light in a view angle; the preset number of infrared emitting points are arranged in the view angle of the lens and used for emitting infrared light; the optical fiber is used for filtering infrared light in the light converged by the lens into the image sensor; the image sensor is used for acquiring the brightness value of each pixel point in the image on the basis of the infrared light passing through the optical filter; and the warning unit is used for triggering for warning when the number of the image emitting points is smaller than the preset number, wherein each image emitting point comprises a plurality of pixel points, and the brightness value of each pixel point in each image emitting point is larger than the average brightness valve of the image. According to the technical scheme of the invention, the positions and the quantity of the infrared emitting points can be set according to actual requirements, and therefore the warning system can be implemented no matter in a stereoscopic anti-theft network or a planar anti-theft network, and the anti-theft range is greatly increased.

Description

Warning system
Technical field
The present invention relates to a kind of warning system.
Background technology
As shown in Figure 1, traditional IR alarm system generally comprises infrared correlative detector and alarm host machine.Infrared correlative detector is made up of with infrared remote receiver 1' infrared transmitter 1, and infrared remote receiver 1' is connected with alarm host machine.
Infrared transmitter 1 is used with infrared remote receiver 1' in pairs, and infrared transmitter 1 sends infrared beam, the infrared beam that the infrared transmitter 1 that infrared remote receiver 1' receives and its pairing is used sends.Infrared transmitter 1 adopts infrarede emitting diode to make light source usually.Photoelectric sensor among the infrared remote receiver 1' adopts photodiode, phototriode, silicon photocell or avalanche silicon diode etc. usually.
Alarm host machine detects the infrared beam between infrared transmitter 1 and the infrared remote receiver 1' through infrared remote receiver 1', and when the infrared beam between infrared transmitter 1 and the infrared remote receiver 1' was interdicted fully or presses the predetermined percentage blocking, alarm host machine triggers reported to the police.
Notification number is that the Chinese utility model patent of CN 201266420Y discloses a kind of infrared correlative detector; Comprise infrared transmitter, infrared remote receiver and controlling alarm machine; Said infrared transmitter connects power supply and communication signal, and said infrared remote receiver connects the controlling alarm machine, and said infrared transmitter is arranged at the emission fence; Said infrared remote receiver correspondence is arranged at and receives on the fence; Said infrared transmitter and infrared remote receiver are that the even numbers of 4 pairs, 6 pairs or 8 pairs is right, and said infrared remote receiver connects the controlling alarm machine through split conductor, and the distance between said adjacent two infrared rays is 10～30CM.
But this man-to-man transmission of infrared transmitter and infrared remote receiver and receiving mode cause existing IR alarm system can only form the anti-theft net of plane formula, and the antitheft scope is less.And in the time of will forming the large tracts of land anti-theft net, a large amount of infrared transmitters and infrared remote receiver take up room bigger.
Summary of the invention
What technical scheme of the present invention solved is the little problem of antitheft scope of existing IR alarm system.
The embodiment of the invention provides a kind of warning system, comprising:
Camera lens is suitable for converging the light in the visual angle;
The infrared emission point of predetermined number places in the visual angle of said camera lens, is suitable for launching IR;
Optical filter, the IR in the light that is suitable for said camera lens is converged is filtered to imageing sensor;
Said imageing sensor is suitable for based on the brightness value that obtains each pixel in the image through the IR of said optical filter;
Alarm unit triggers when being suitable for quantity at image emissions point less than said predetermined number and reports to the police, and said image emissions point comprises a plurality of pixels, and the brightness value of the pixel in the said image emissions point is greater than the average brightness of image.
Selectable, the quantity of said imageing sensor is less than the predetermined number of said infrared emission point.
Selectable, the predetermined number of said infrared emission point is greater than 1, and the quantity of said imageing sensor is 1.
Selectable, the predetermined number of said infrared emission point is greater than 2, and said infrared emission point is in the non-linear visual angle that places said camera lens.
Selectable, said camera lens is spherical camera lens.
Selectable; Said warning system also comprises positioning unit; Be suitable for the coordinate and the preset coordinate of more said image emissions point, the position of the infrared emission point that obtains to be blocked, said preset coordinate is the coordinate of the quantity of said image emissions point said image emissions point when equaling said predetermined number.
Selectable, described warning system also comprises storage unit, is suitable for preserving the corresponding relation of the position of said preset coordinate and said infrared emission point; Said positioning unit is suitable for the coordinate and the preset coordinate of more said image emissions point; Obtain the coordinate of the image emissions point of disappearance; According to the corresponding relation of the position of said preset coordinate and said infrared emission point, obtain the position of the corresponding infrared emission point that is blocked of the coordinate of image emissions point of said disappearance.
Selectable, the brightness value of the pixel in the said image emissions point is greater than N times of the average brightness of image, and said N is an integer.
Compared with prior art; The warning system of technical scheme of the present invention utilizes camera lens, optical filter, imageing sensor that the IR that the point of the infrared emission in the camera lens visual angle sends is detected; The testing result that is blocked according to IR triggers warning, because the position and the quantity of infrared emission point in the camera lens visual angle can be provided with according to actual needs, so; No matter three-dimensional still plane formula anti-theft net can realize that the antitheft scope increases greatly.
And the warning system of technical scheme of the present invention can also be confirmed the position that accident gets into the incomer of alarm region, help finding fast the incomer like this.
Description of drawings
Fig. 1 is the structural representation of traditional IR alarm system;
Fig. 2 is an example structure synoptic diagram of warning system of the present invention;
Fig. 3 is the image synoptic diagram that imageing sensor forms in the warning system shown in Figure 2;
Fig. 4 is another example structure synoptic diagram of warning system of the present invention;
Fig. 5 is the image synoptic diagram that imageing sensor forms in the warning system shown in Figure 4.
Embodiment
Do detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention.In the following passage, with way of example the present invention is described more specifically with reference to accompanying drawing.According to description, advantage of the present invention and characteristic will be clearer.
As shown in Figure 2, the embodiment of the invention provides a kind of warning system, comprising:
Camera lens 2 is suitable for converging the light in the visual angle;
The infrared emission point of predetermined number places in the visual angle of said camera lens 2, is suitable for launching IR;
Optical filter 3, the IR in the light that is suitable for said camera lens 2 is converged is filtered to imageing sensor 4;
Said imageing sensor 4 is suitable for based on the brightness value that obtains each pixel in the image through the IR of said optical filter 3;
Alarm unit 5 triggers when being suitable for quantity at image emissions point less than said predetermined number and reports to the police, and said image emissions point comprises a plurality of pixels, and the brightness value of the pixel in the said image emissions point is greater than the brightness value mean value of image.
Camera lens 2 can select angular field of view bigger, like wide-angle lens, can converge the wider of light like this.Optional, camera lens 2 is spherical camera lens.The maximum visual angle of spherical camera lens can be similar to and reach 180 degree.
The infrared emission point places in the visual angle of said camera lens 2, and the visual angle of camera lens 2 is big more, and the predetermined number of the infrared emission point that can place is big more, and the IR that the infrared emission point sends is intensive more, and the warning system of formation is tight more.A plurality of infrared emission points are positioned over different positions, just can form tight three-dimensional alarm region.Infrared emission point that it should be noted that the embodiment of the invention need not to use infrared acceptance point to be used with it.
The predetermined number of infrared emission point can be greater than 2, and the infrared emission point is in the non-linear visual angle that places said camera lens.Continuation is with reference to figure 2; The predetermined number of infrared emission point is 8, and the infrared emission point comprises infrared emission point 11, infrared emission point 12, infrared emission point 21, infrared emission point 22, infrared emission point 31, infrared emission point 32, infrared emission point 41 and infrared emission point 42.
Have infrared emission point 11 on the straight line A and lay respectively at position A1 and position A2 with 12, two infrared emission points of infrared emission point.
Have infrared emission point 21 on the straight line B and lay respectively at position B1 and position B2 with 22, two infrared emission points of infrared emission point.
Have infrared emission point 31 on the straight line C and lay respectively at position C1 and position C2 with 32, two infrared emission points of infrared emission point
Have infrared emission point 41 on the straight line D and lay respectively at position D1 and position D2 with 42, two infrared emission points of infrared emission point.
Wherein, 8 infrared emission points all place in the visual angle of camera lens 2, and the plane at straight line A and straight line B place is vertical with the plane approximation at straight line D place with straight line C, does not have three launching site to be positioned on the straight line; So the infrared emission point can form three-dimensional alarm region.
Optical filter 3 can be bandpass filter, and only through the IR of specified wavelength, the light of other wavelength is all ended, and could from the light that camera lens 2 converges, collect the IR of infrared emission point emission like this.
Imageing sensor 4 can obtain the brightness value of each pixel in the image based on the IR through optical filter 3.For single pixel, 0 representative is the most black in the brightness value of 0-255,255 representatives are the brightest.The average brightness of said image is meant the mean value of the brightness value of all pixels in the said image.
The quantity of imageing sensor 4 is less than the predetermined number of infrared emission point.Selectable, the quantity of imageing sensor 4 is 1, and the predetermined number of infrared emission point is greater than 1.Like this, only need a spot of imageing sensor 4 just can cooperate and form warning system, will simplify many than the infrared detector structure that needs in the prior art to use in pairs with numerous infrared emission points.
The brightness value of the pixel in the said image emissions point can be greater than the N of the average brightness of image doubly.Said N can be integers such as 2,3,4.
Referring to figs. 2 to Fig. 5, present embodiment is illustrated below.
The IR that 8 infrared emission points shown in Figure 2 send all is not blocked, all converged by camera lens 2, and through the filtration of optical filter 3, and the processing of imageing sensor 4, the brightness value of each pixel in the acquisition image.
According to the brightness value of each pixel, form image shown in Figure 3.The average brightness of supposing the image shown in Fig. 3 is 50, and the brightness value of the pixel in the white round dot is 200, and the brightness value of the pixel in the image emissions point is greater than 2 times of the average brightness of image.
Alarm unit 5 confirms that greater than 2 times of the average brightness 50 of image white round dots are the image emissions point according to the brightness value 200 of the pixel in the white round dot, and the quantity of calculating said white round dot is 8, and is identical with 8 of predetermined numbers, do not trigger warning.Said 8 image emissions points are respectively image emissions point 11', image emissions point 12', image emissions point 21', image emissions point 22', image emissions point 31', image emissions point 32', image emissions point 41' and image emissions point 42'.
As shown in Figure 4; Get into the alarm region that infrared emission point forms as the people, the IR that infrared emission point 31 and infrared emission point 32 send is blocked and can't be converged by camera lens 2, so; The IR that has only 6 infrared emission points to send is converged by camera lens 2; Through the filtration of optical filter 3, and the processing of imageing sensor 4, the brightness value of each pixel in the acquisition image.
According to the brightness value of each pixel, form image shown in Figure 5.The average brightness of supposing the image shown in Fig. 5 is 52, and the brightness value of the pixel in the white round dot is 200, and the brightness value of the pixel in the image emissions point is greater than 2 times of the average brightness of image.
Alarm unit 5 confirms that greater than 2 times of the average brightness 52 of image white round dots are the image emissions point according to the brightness value 200 of the pixel in the white round dot, and the quantity of calculating said white round dot is 6, less than 8 of predetermined numbers, triggers and reports to the police.Said 6 image emissions points are respectively image emissions point 11', image emissions point 12', image emissions point 21', image emissions point 22', image emissions point 41' and image emissions point 42'.
According to another embodiment; Warning system also comprises positioning unit; Be suitable for the coordinate and the preset coordinate of movement images launching site; The position of the infrared emission point that acquisition is blocked, said preset coordinate are the coordinate of the quantity of said image emissions point said image emissions point when equaling said predetermined number.
In the present embodiment, warning system also comprises storage unit, is suitable for preserving the corresponding relation of the position of said preset coordinate and said infrared emission point; Said positioning unit is suitable for the coordinate and the preset coordinate of more said image emissions point; Obtain the coordinate of the image emissions point of disappearance; According to the corresponding relation of the position of said preset coordinate and said infrared emission point, obtain the position of the corresponding infrared emission point that is blocked of the coordinate of image emissions point of said disappearance.
Continue below present embodiment to be illustrated referring to figs. 2 to Fig. 5.
8 of the quantity of the image emissions point shown in Fig. 3 equal 8 of the predetermined numbers of the infrared emission point shown in Fig. 2, and the preset coordinate of being confirmed by the image emissions point shown in Fig. 3 is:
Image emissions point 42 ' coordinate is (0,0);
Image emissions point 41' coordinate is (0,2);
Image emissions point 32' coordinate is (1,0);
Image emissions point 31 ' coordinate is (1,2);
Image emissions point 22' coordinate is (4,0);
Image emissions point 21 ' coordinate is (4,2);
Image emissions point 12' coordinate is (5,0);
Image emissions point 11' coordinate is (5,2).
The corresponding relation of the preset coordinate that storage unit is preserved and the position of infrared emission point is following:
Image emissions point 42' coordinate is (0,0) correspondence position D2;
Image emissions point 41' coordinate is (0,2) correspondence position D1;
Image emissions point 32' coordinate is (1,0) correspondence position C2;
Image emissions point 31' coordinate is (1,2) correspondence position C1;
Image emissions point 22 ' coordinate is (4,0) correspondence position B2;
Image emissions point 21' coordinate is (4,2) correspondence position B1;
Image emissions point 12' coordinate is (5,0) correspondence position A2;
Image emissions point 11' coordinate is (5,2) correspondence position A1.
After someone got into, 6 of the quantity of the image emissions point shown in Fig. 5 were less than 8 of predetermined numbers, and the coordinate of being confirmed by the image emissions point shown in Fig. 5 is:
Image emissions point 42' coordinate is (0,0);
Image emissions point 41' coordinate is (0,2);
Image emissions point 22' coordinate is (4,0);
Image emissions point 21' coordinate is (4,2);
Image emissions point 12 ' coordinate is (5,0);
Image emissions point 11' coordinate is (5,2).
Positioning unit will be compared by the image emissions point shown in Fig. 5 coordinate of confirming and the preset coordinate of being confirmed by the image emissions point shown in Fig. 3; The coordinate that obtains the image emissions point of disappearance is respectively: image emissions point 31' coordinate is (1; 2) and image emissions point 32' coordinate be (1; 0), the preset coordinate of preserving according to storage unit and the corresponding relation of the position of infrared emission point, the position of the infrared emission point that acquisition is blocked is: position C1 and position C2.
In practical application, can judge the position that gets into the people according to position C1 and position C2.So, use the warning system of present embodiment, not only can carry out alarm to the people that accident gets into alarm region, can also confirm incomer's position, help finding fast the incomer like this.
Though the present invention discloses as above with preferred embodiment, the present invention is defined in this.Any those skilled in the art are not breaking away from the spirit and scope of the present invention, all can do various changes and modification, so protection scope of the present invention should be with claim institute limited range.

Claims (8)

1. a warning system is characterized in that, comprising:
Camera lens is suitable for converging the light in the visual angle;
The infrared emission point of predetermined number places in the visual angle of said camera lens, is suitable for launching IR;
Optical filter, the IR in the light that is suitable for said camera lens is converged is filtered to imageing sensor;
Said imageing sensor is suitable for based on the brightness value that obtains each pixel in the image through the IR of said optical filter;
Alarm unit triggers when being suitable for quantity at image emissions point less than said predetermined number and reports to the police, and said image emissions point comprises a plurality of pixels, and the brightness value of the pixel in the said image emissions point is greater than the average brightness of image.
2. warning system as claimed in claim 1 is characterized in that the quantity of said imageing sensor is less than the predetermined number of said infrared emission point.
3. warning system as claimed in claim 2 is characterized in that, the predetermined number of said infrared emission point is greater than 1, and the quantity of said imageing sensor is 1.
4. warning system as claimed in claim 1 is characterized in that, the predetermined number of said infrared emission point is greater than 2, and said infrared emission point is in the non-linear visual angle that places said camera lens.
5. warning system as claimed in claim 1 is characterized in that, said camera lens is spherical camera lens.
6. warning system as claimed in claim 1; It is characterized in that; Also comprise positioning unit; Be suitable for the coordinate and the preset coordinate of more said image emissions point, the position of the infrared emission point that obtains to be blocked, said preset coordinate is the coordinate of the quantity of said image emissions point said image emissions point when equaling said predetermined number.
7. warning system as claimed in claim 6 is characterized in that, also comprises storage unit, is suitable for preserving the corresponding relation of the position of said preset coordinate and said infrared emission point; Said positioning unit is suitable for the coordinate and the preset coordinate of more said image emissions point; Obtain the coordinate of the image emissions point of disappearance; According to the corresponding relation of the position of said preset coordinate and said infrared emission point, obtain the position of the corresponding infrared emission point that is blocked of the coordinate of image emissions point of said disappearance.
8. warning system as claimed in claim 1 is characterized in that, the brightness value of the pixel in the said image emissions point is greater than N times of the average brightness of image, and said N is an integer.
CN2012101695437A 2012-05-29 2012-05-29 Warning system Pending CN102682547A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108648393A (en) * 2018-07-06 2018-10-12 国家电网公司 Anti-theft alarm for transformer
CN108689108A (en) * 2018-05-04 2018-10-23 中国神华能源股份有限公司 The anti-belt tearing device and method of iron remover
CN110197563A (en) * 2018-02-27 2019-09-03 河北金锁安防工程股份有限公司 Three-dimensional auto sleep type anti-theft system
CN110505371A (en) * 2018-05-18 2019-11-26 杭州萤石软件有限公司 A kind of infrared occlusion detection method and picture pick-up device

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Publication number Priority date Publication date Assignee Title
US5510772A (en) * 1992-08-07 1996-04-23 Kidde-Graviner Limited Flame detection method and apparatus
JPH1083487A (en) * 1996-09-06 1998-03-31 Hitachi Building Syst Co Ltd Intruder detecting device
CN1349091A (en) * 2000-10-16 2002-05-15 中国科学技术大学 Relative smog density image detector and its detection method
CN1444008A (en) * 2002-03-13 2003-09-24 欧姆龙株式会社 Three-dimensional monitor device
CN1487274A (en) * 2003-07-25 2004-04-07 伟 陈 Infrared source heat image detecting method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5510772A (en) * 1992-08-07 1996-04-23 Kidde-Graviner Limited Flame detection method and apparatus
JPH1083487A (en) * 1996-09-06 1998-03-31 Hitachi Building Syst Co Ltd Intruder detecting device
CN1349091A (en) * 2000-10-16 2002-05-15 中国科学技术大学 Relative smog density image detector and its detection method
CN1444008A (en) * 2002-03-13 2003-09-24 欧姆龙株式会社 Three-dimensional monitor device
CN1487274A (en) * 2003-07-25 2004-04-07 伟 陈 Infrared source heat image detecting method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110197563A (en) * 2018-02-27 2019-09-03 河北金锁安防工程股份有限公司 Three-dimensional auto sleep type anti-theft system
CN108689108A (en) * 2018-05-04 2018-10-23 中国神华能源股份有限公司 The anti-belt tearing device and method of iron remover
CN110505371A (en) * 2018-05-18 2019-11-26 杭州萤石软件有限公司 A kind of infrared occlusion detection method and picture pick-up device
CN110505371B (en) * 2018-05-18 2021-07-09 杭州萤石软件有限公司 Infrared shielding detection method and camera equipment
CN108648393A (en) * 2018-07-06 2018-10-12 国家电网公司 Anti-theft alarm for transformer
CN108648393B (en) * 2018-07-06 2020-12-22 长春工程学院 Transformer anti-theft alarm device

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Application publication date: 20120919