CN103037152A - Double-inductor infrared camera and control method thereof - Google Patents
Double-inductor infrared camera and control method thereof Download PDFInfo
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- CN103037152A CN103037152A CN2012105757038A CN201210575703A CN103037152A CN 103037152 A CN103037152 A CN 103037152A CN 2012105757038 A CN2012105757038 A CN 2012105757038A CN 201210575703 A CN201210575703 A CN 201210575703A CN 103037152 A CN103037152 A CN 103037152A
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Abstract
The invention discloses a double-inductor infrared camera and a control method thereof. The double-inductor infrared camera comprises a lens group, a semi-reflecting semi-permeating lens, a visible light inductor, an infrared inductor, a control module, a visible light filter, an infrared light filter, a memorizer and a luminance inductor. The invention further discloses a double-inductor infrared camera control method which comprises the following steps: (1) acquiring ambient light illumination A; (2) judging whether the ambient light illumination A is larger than a given threshold A0, entering the step (3) if the ambient light illumination is larger than the given threshold A0, and entering the step (4) if the ambient light illumination is not larger than the given threshold A0; (3) closing the infrared inductor, and opening the visible light inductor; (4) closing the visible light inductor, and opening the infrared inductor. According to the double-inductor infrared camera and the control method, a semi-reflecting semi-permeating structure is applied in the infrared camera to achieve uniformity of monitoring visual fields; and a double-inductor structure is adopted, two inductors are driven through switching and are enabled to work in an intersection mode so that intersected receiving of visible light and infrared light images is realized, and complex calculation processes brought by simultaneous receiving of two kinds of light are avoided.
Description
Technical field
The present invention relates to field of video monitoring, relate in particular to a kind of dual inductor thermal camera and control method thereof.
Background technology
Along with the raising of people's security consciousness, various security monitoring video cameras are widely used.In order to realize round-the-clock 24 hours continuous monitorings, night, recording function was very necessary.Realize the method for night vision, can adopt conventional visible illumination, but this method not only can not be hidden, on the contrary exposure monitoring target more.Hidden night vision monitoring all is to adopt infrared camera technology at present.
The visible light that people's eyes can be seen (wavelength 0.38 μ m-0.76 μ m) is arranged from growing to lacking by wavelength and is followed successively by red, orange, yellow, green, blue, blue, purple.Ultraviolet ray, infrared ray, these two kinds of light human eyes are invisible than the longer light of red light wavelength than the shorter light of violet wavelength.The induction spectrum that video camera is used for receiving the photoinduction device (CCD or CMOS) of extraneous light there are differences with human eye usually, often covering visible light and infrared ray subband.Usually, traditional cameras can add an infrared fileter before optical inductor, and filtering infrared light composition is in order to the colour cast of avoiding causing because of infrared spectrum.In like manner, thermal camera is to add one can see through infrared ray, the filter of filtering visible light before optical inductor.
If need video camera to record by day the normal picture of color, need to before optical inductor, add infrared fileter; If record at night infrared video, then need to add the infrared filter that sees through.Like this, if the video camera of a single inductor needs all weather operations in 24 hours, need to carry out the switching of filter.Tradition day and night video camera is to adopt a mechanical device that filter is switched, because the resistance to wear of mechanical device is not very high, and failure rate is high, and reliability can't guarantee.
In order to address this problem, the dual inductor thermal camera has appearred recently.The principle of dual inductor thermal camera is in fact very simple, just two video camera amalgamations are in same shell, utilize a photo resistance to switch, daytime, used one was stained with the ultrared filter of complete filtering, that that open evening do not have filter, just common glass sheet is repaired light, and it has just replaced mechanical switching with opto-electronic conversion in fact.The thermal camera of dual inductor structure has the following advantages: 1, two video cameras one on duty in turn, a day shift, a night shift can prolong useful life of video camera.2, adopt the light of special inductor induction different-waveband, be conducive to improve the color rendition degree of video camera.
Dual inductor thermal camera so far is that two video camera amalgamations are in same shell, because two inductor supervisors' camera lens is in same plane, between shine take the photograph angle and scope distinct, therefore, the monitoring place of imaging on the display is that other is arranged minute.When needs were monitored a certain specific region, current dual inductor thermal camera can't be realized.And because the zone is different, the continuity in the time of can't guaranteeing Picture switch.
Chinese patent CN101510007B has proposed " a kind of infrared light image and visible images real time shooting and self-adapting fusing device ".The device of this patent Introduction, to utilize half-reflecting half mirror that visible light is separated with infrared light, project respectively on two CCD, on two CCD, obtain simultaneously infrared light image and visible images, and process by external image pick-up card and computer, realize the self adaptation of infrared light image and visible images.This covering device utilizes the half-reflection and half-transmission device that visible light is separated with infrared light, so that two kinds of images of Same Scene have very strong uniformity.But this device needs complicated external equipment and data to calculate, and needs higher cost, is applicable to scientific research, can't adapt to small and exquisite, quick, the portable characteristics of rig camera.Simultaneously, this equipment is the image that receives simultaneously two kinds of spectrum, and rig camera does not need the spectrum picture fusion function of this complexity.
Summary of the invention
The objective of the invention is to overcome defective of the prior art, a kind of dual inductor thermal camera and the control method thereof that can carry out the alternation of day and night imaging is provided.
For addressing the above problem, a kind of dual inductor thermal camera of the present invention comprises:
Set of lenses is used for collecting light, and ambient light congruence collection is entered in the video camera;
Half-reflecting half mirror is positioned on the light path after light passes set of lenses, is used for visible light transmissive, reflects infrared light;
The visible light inductor is positioned at the areas imaging of the visible light after the half-reflecting half mirror transmission, is used for receiving visible light signal, and visible light signal is changed into electrical signal transfer to control module;
Infrared inductor is positioned at the ultrared areas imaging after the half-reflecting half mirror reflection, is used for receiving infrared-ray signal, and infrared signal is changed into electrical signal transfer to control module;
Control module, link to each other with visible light inductor, infrared inductor, memory and brightness impression device respectively, comprise A/D converter and DSP, be used for receiving the signal of telecommunication of visible light inductor, infrared inductor transmission, and convert the electrical signal to image information and be sent to memory and store, judge according to the ambient light illumination information of brightness impression device transmission simultaneously and control visible light inductor or infrared inductor are opened or closed;
Memory is stored the image information that control module sends;
The brightness impression device links to each other with control module, is used for induced environment illumination, and ambient light illumination information is passed to control module.
At described visible light inductor front end visible filter is set.
At described infrared inductor front end infrared filter is set.
A kind of control method of foregoing dual inductor thermal camera may further comprise the steps:
1) obtains ambient light illumination A;
2) judge that whether ambient light illumination A is greater than given threshold value A
0, if so, enter step 3; If not, enter step 4;
3) infrared inductor is closed, and the visible light inductor is opened, and enters step 5;
4) the visible light inductor is closed, and infrared inductor is opened, and enters step 8;
5) obtain ambient light illumination A;
6) judge that whether ambient light illumination A is greater than given threshold value A
0, if so, enter step 5; If not, enter step 7;
7) judge that ambient light illumination A continues to be not more than given threshold value A
0Time t whether greater than threshold value t preset time
0, if so, enter step 4; If not, enter step 5.
8) obtain ambient light illumination A;
9) judge that whether ambient light illumination A is greater than given threshold value A
0, if not, enter step 8; If so, enter step 10;
10) judge that whether ambient light illumination A continues time t greater than given threshold value A 0 greater than threshold value t0 preset time, if so, enters step 3; If not, enter step 8.
Adopt dual inductor thermal camera of the present invention and control method thereof, half-reflection and half-transmission formula structure applications in thermal camera, is solved monitoring visual field uniformity problem; Adopt the dual inductor structure, and by switching the driving to two kinds of inductors, make two kinds of inductor forked workings, realize that visible light and infrared light image intersect reception, avoid two kinds of light to receive simultaneously the complex calculation process of bringing, the useful life of improving simultaneously two kinds of inductors.
Description of drawings
Fig. 1 is the structured flowchart of dual inductor thermal camera of the present invention;
Fig. 2 is the flow chart of dual inductor thermal camera control method of the present invention.
Among the figure: set of lenses 1, half-reflecting half mirror 2, visible filter 3, visible light inductor 4, infrared filter 5, infrared inductor 6, control module 7, memory 8, brightness impression device 9
Embodiment
In order to make those skilled in the art person understand better technical solution of the present invention, the present invention is described in further detail below in conjunction with drawings and embodiments.
As shown in Figure 1, a kind of dual inductor thermal camera of the present invention comprises set of lenses, half-reflecting half mirror, visible light inductor, infrared inductor, control module, visible filter, infrared filter, memory and brightness impression device.
Wherein, described set of lenses is used for collecting light, and ambient light congruence collection is entered in the video camera.
Described half-reflecting half mirror is positioned on the light path after light passes set of lenses, is used for visible light transmissive, reflects infrared light.After the rays pass through lens group entered video camera, visible light composition wherein saw through half-reflecting half mirror and arrives visible filter and visible light inductor, and the infrared ray composition reflects through half-reflecting half mirror, arrived infrared fileter and infrared inductor.
Described, the visible light inductor is positioned at the areas imaging that the visible light behind the half-reflecting half mirror is crossed in transmission, is used for receiving visible light signal, and it is changed into electrical signal transfer to control module.
Infrared inductor is positioned at the ultrared areas imaging after the half-reflecting half mirror reflection, is used for receiving infrared-ray signal, and it is changed into electrical signal transfer to control module.
Control module, link to each other with visible light inductor, infrared inductor, memory and brightness impression device respectively, comprise A/D converter and DSP, be used for receiving the signal of telecommunication of visible light inductor, infrared inductor transmission, A/D converter also converts the electrical signal to digital information, is sent to memory again after DSP processes and stores.
Simultaneously, control module is judged according to the ambient light illumination information of brightness impression device transmission and control visible light inductor or infrared inductor are opened or closed.
Described memory is stored the digital information that control module sends.
Described brightness impression device links to each other with control module, is used for induced environment illumination, and ambient light illumination information is passed to control module.
Visible light in the light and infrared ray transmit through the backward different directions of half-reflecting half mirror, but limited because of the half-reflecting half mirror precision, may comprise the infrared composition of sub-fraction in the visible light, also comprise small part visible light composition in the infrared ray.Therefore, be provided with visible filter being positioned at described visible light inductor front end light path; Simultaneously, be provided with infrared filter being positioned at described infrared inductor front end light path.The effect of visible filter is the infrared composition in the filtering visible light, and the in like manner effect of infrared fileter is the visible light composition in the filtering infrared ray.
The control method of a kind of foregoing dual inductor thermal camera of the present invention may further comprise the steps:
1) obtains ambient light illumination A;
2) judge that whether ambient light illumination A is greater than given threshold value A
0, if so, enter step 3; If not, enter step 4;
3) infrared inductor is closed, and the visible light inductor is opened, and enters step 5;
4) the visible light inductor is closed, and infrared inductor is opened, and enters step 8;
5) obtain ambient light illumination A;
6) judge that whether ambient light illumination A is greater than given threshold value A
0, if so, enter step 5; If not, enter step 7;
7) judge that ambient light illumination A continues to be not more than given threshold value A
0Time t whether greater than threshold value t preset time
0, if so, enter step 4; If not, enter step 5.
8) obtain ambient light illumination A;
9) judge that whether ambient light illumination A is greater than given threshold value A
0, if not, enter step 8; If so, enter step 10;
10) judge that whether ambient light illumination A continues time t greater than given threshold value A 0 greater than threshold value t0 preset time, if so, enters step 3; If not, enter step 8.
After the video camera start, program loads, module initialization.The brightness impression device is responded to external environment illumination A, and ambient light illumination information is fed back to control module.Control module is with the threshold value A of ambient light illumination A and setting
0Contrast determines which inductor carries out imaging.When A is higher than threshold value A
0The time, control visible light inductor is opened; When A is lower than threshold value A
0The time, the control infrared inductor is opened.When visual intensity in the threshold range saltus step, and surpass certain hour t
0The time, mode of operation changes accordingly.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. a dual inductor thermal camera is characterized in that, comprising:
Set of lenses is used for collecting light, and ambient light congruence collection is entered in the video camera;
Half-reflecting half mirror is positioned on the light path after light passes set of lenses, is used for visible light transmissive, reflects infrared light;
The visible light inductor is positioned at the areas imaging of the visible light after the half-reflecting half mirror transmission, is used for receiving visible light signal, and visible light signal is changed into electrical signal transfer to control module;
Infrared inductor is positioned at the ultrared areas imaging after the half-reflecting half mirror reflection, is used for receiving infrared-ray signal, and infrared signal is changed into electrical signal transfer to control module;
Control module, link to each other with visible light inductor, infrared inductor, memory and brightness impression device respectively, comprise A/D converter and DSP, be used for receiving the signal of telecommunication of visible light inductor, infrared inductor transmission, and convert the electrical signal to image information and be sent to memory and store, judge according to the ambient light illumination information of brightness impression device transmission simultaneously and control visible light inductor or infrared inductor are opened or closed;
Memory is stored the image information that control module sends;
The brightness impression device links to each other with control module, is used for induced environment illumination, and ambient light illumination information is passed to control module.
2. dual inductor thermal camera as claimed in claim 1 is characterized in that, at described visible light inductor front end visible filter is set.
3. dual inductor thermal camera as claimed in claim 1 is characterized in that, at described infrared inductor front end infrared filter is set.
4. the control method of a dual inductor thermal camera as claimed in claim 1 may further comprise the steps:
1) obtains ambient light illumination A;
2) judge that whether ambient light illumination A is greater than given threshold value A
0, if so, enter step 3; If not, enter step 4;
3) infrared inductor is closed, and the visible light inductor is opened, and enters step 5;
4) the visible light inductor is closed, and infrared inductor is opened, and enters step 8;
5) obtain ambient light illumination A;
6) judge that whether ambient light illumination A is greater than given threshold value A
0, if so, enter step 5; If not, enter step 7;
7) judge that ambient light illumination A continues to be not more than given threshold value A
0Time t whether greater than threshold value t preset time
0, if so, enter step 4; If not, enter step 5.
8) obtain ambient light illumination A;
9) judge that whether ambient light illumination A is greater than given threshold value A
0, if not, enter step 8; If so, enter step 10;
10) judge that whether ambient light illumination A continues time t greater than given threshold value A 0 greater than threshold value t0 preset time, if so, enters step 3; If not, enter step 8.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103218587A (en) * | 2013-04-11 | 2013-07-24 | 广东省电信规划设计院有限公司 | Proximity sensor, radio frequency identification (RFID) card reader and proximity sensing method |
| CN103297693A (en) * | 2013-05-17 | 2013-09-11 | 成都市晶林科技有限公司 | Power-saving infrared video camera |
| CN103546723A (en) * | 2013-09-27 | 2014-01-29 | 深圳市飞瑞斯科技有限公司 | Monitoring system and monitoring method |
| CN104159084A (en) * | 2014-08-21 | 2014-11-19 | 中南林业科技大学 | Monitoring method based on novel monitoring lens and dual image sensors |
| CN104159085A (en) * | 2014-08-21 | 2014-11-19 | 中南林业科技大学 | Monitoring system based on novel monitoring lens and two image sensors |
| CN104184962A (en) * | 2014-08-12 | 2014-12-03 | 中国科学院上海微系统与信息技术研究所 | DSP (digital signal processor) and image processing based all-weather image acquisition system |
| CN105678215A (en) * | 2015-12-28 | 2016-06-15 | 北京天诚盛业科技有限公司 | Imaging module, imaging device and mobile terminal |
| CN106251545A (en) * | 2016-08-08 | 2016-12-21 | 合肥泰好乐电子科技有限公司 | A kind of intelligent family monitoring system |
| CN107483783A (en) * | 2017-08-24 | 2017-12-15 | 无锡北斗星通信息科技有限公司 | A kind of gun type camera method of switching |
| CN108111731A (en) * | 2017-12-27 | 2018-06-01 | 信利光电股份有限公司 | A kind of camera module |
| WO2019137385A1 (en) * | 2018-01-10 | 2019-07-18 | 合肥师范学院 | Traffic monitoring apparatus capable of switching camera mode |
| CN111381599A (en) * | 2018-12-28 | 2020-07-07 | 中强光电股份有限公司 | Unmanned aerial vehicle obstacle avoidance system and control method thereof |
| CN112528715A (en) * | 2019-09-19 | 2021-03-19 | 杭州海康微影传感科技有限公司 | Ship monitoring method, device and equipment and storage medium |
| CN113378599A (en) * | 2020-02-25 | 2021-09-10 | 北京小米移动软件有限公司 | Optical fingerprint device, electronic equipment, brightness control method and device |
| CN113542573A (en) * | 2020-04-14 | 2021-10-22 | 华为技术有限公司 | Photographing method and electronic equipment |
| CN116156303A (en) * | 2023-02-24 | 2023-05-23 | 西南科技大学 | Real-time shooting and self-adaptive fusion device for infrared light image and visible light image |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103218587A (en) * | 2013-04-11 | 2013-07-24 | 广东省电信规划设计院有限公司 | Proximity sensor, radio frequency identification (RFID) card reader and proximity sensing method |
| CN103218587B (en) * | 2013-04-11 | 2016-03-16 | 广东省电信规划设计院有限公司 | Proximity transducer, RFID card reader and close to method for sensing |
| CN103297693A (en) * | 2013-05-17 | 2013-09-11 | 成都市晶林科技有限公司 | Power-saving infrared video camera |
| CN103546723A (en) * | 2013-09-27 | 2014-01-29 | 深圳市飞瑞斯科技有限公司 | Monitoring system and monitoring method |
| CN104184962A (en) * | 2014-08-12 | 2014-12-03 | 中国科学院上海微系统与信息技术研究所 | DSP (digital signal processor) and image processing based all-weather image acquisition system |
| CN104159084A (en) * | 2014-08-21 | 2014-11-19 | 中南林业科技大学 | Monitoring method based on novel monitoring lens and dual image sensors |
| CN104159085A (en) * | 2014-08-21 | 2014-11-19 | 中南林业科技大学 | Monitoring system based on novel monitoring lens and two image sensors |
| CN105678215A (en) * | 2015-12-28 | 2016-06-15 | 北京天诚盛业科技有限公司 | Imaging module, imaging device and mobile terminal |
| CN106251545A (en) * | 2016-08-08 | 2016-12-21 | 合肥泰好乐电子科技有限公司 | A kind of intelligent family monitoring system |
| CN106251545B (en) * | 2016-08-08 | 2018-11-30 | 张衡 | A kind of intelligent family monitoring system |
| CN107483783A (en) * | 2017-08-24 | 2017-12-15 | 无锡北斗星通信息科技有限公司 | A kind of gun type camera method of switching |
| CN108111731A (en) * | 2017-12-27 | 2018-06-01 | 信利光电股份有限公司 | A kind of camera module |
| WO2019137385A1 (en) * | 2018-01-10 | 2019-07-18 | 合肥师范学院 | Traffic monitoring apparatus capable of switching camera mode |
| US11412139B2 (en) | 2018-01-10 | 2022-08-09 | Hefei Normal University | Traffic monitoring device capable of switching camera mode |
| CN111381599A (en) * | 2018-12-28 | 2020-07-07 | 中强光电股份有限公司 | Unmanned aerial vehicle obstacle avoidance system and control method thereof |
| CN112528715A (en) * | 2019-09-19 | 2021-03-19 | 杭州海康微影传感科技有限公司 | Ship monitoring method, device and equipment and storage medium |
| CN113378599A (en) * | 2020-02-25 | 2021-09-10 | 北京小米移动软件有限公司 | Optical fingerprint device, electronic equipment, brightness control method and device |
| CN113542573A (en) * | 2020-04-14 | 2021-10-22 | 华为技术有限公司 | Photographing method and electronic equipment |
| CN116156303A (en) * | 2023-02-24 | 2023-05-23 | 西南科技大学 | Real-time shooting and self-adaptive fusion device for infrared light image and visible light image |
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Application publication date: 20130410 |