CN105373140A - Light source tracking method and system - Google Patents
Light source tracking method and system Download PDFInfo
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- CN105373140A CN105373140A CN201410415659.3A CN201410415659A CN105373140A CN 105373140 A CN105373140 A CN 105373140A CN 201410415659 A CN201410415659 A CN 201410415659A CN 105373140 A CN105373140 A CN 105373140A
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Abstract
The invention discloses a light source tracking method and system. According to the embodiment, the light source tracking method comprises the following steps: capturing an image of a light spot image corresponding to a light source through an image capturing device; calculating the position of the light spot according to the captured image of the light spot; comparing the calculated position of the light spot with a preset calibration position, and obtaining the offset of the light spot; and adjusting a lighting angle according to the offset of the light spot, and tracking the position of the light source. An image of a light spot corresponding to sunlight is collected through a camera, and a light source is tracked by means of an image identification technology. Compared with a conventional light source tracking mode, the light source tracking system can track the position of a light source more accurately and exhibits higher interference resistance. Moreover, the cost of equipment is reduced.
Description
Technical field
The present invention relates to light source tracking technology, particularly relate to a kind of light source tracking method and system.
Background technology
Along with the progress of science and technology, also more and more efficient and environmental protection are focused on to the utilization of natural energy source.To utilize sun power, such as solar electrical energy generation, solar energy stove, sunshine importing etc., also more and more extensive to the range of application of sun power.Utilizing in scene to sun power, being the key of Solar use efficiency to the ray trace of sunshine and location, is also one of focus of technician institute extensive concern.
Conventional sunray tracking technique mainly adopts following two kinds of modes, and first kind of way is: mainly utilize 4 quadrant detector to follow the tracks of; The second way is: calculate position of sun by date, time and local longitude and latitude, thus realizes the tracking to sunray.For first kind of way, due to 4 quadrant detector costly, therefore its cost is high and be easily subject to environmental interference.For the second way, owing to being follow the tracks of sunray by date, time and local longitude and latitude, therefore, require too high to the mechanical precision of hardware device, thus make its cost also higher.
Summary of the invention
In view of above content, be necessary to provide a kind of ray tracing method and system, be intended to utilize image capture device to realize accurate tracking to light source, cost-saving.
Embodiments provide a kind of light source tracking method, comprise the following steps:
Light spot image corresponding to light source is caught by image capture device;
According to the described light spot image captured, calculate facula position;
The described facula position calculated and the calibrating position preset are compared, obtains facula deviation amount;
According to described facula deviation amount, adjustment lighting angle, follows the tracks of light source position;
Wherein, described default calibrating position is the central point of described light spot image.
Preferably, the described light spot image that described basis captures, the step calculating facula position comprises:
For the described light spot image caught sets up coordinate system; Wherein, all corresponding brightness value of each coordinate points in described coordinate system;
Obtain each coordinate points in described coordinate system distinguish corresponding coordinate points brightness value, and the described coordinate points brightness value obtained and predetermined luminance value to be compared, obtain the coordinate points that described coordinate points brightness value is greater than predetermined luminance value;
Be greater than the coordinate points of predetermined luminance value according to described coordinate points brightness value, calculate described facula position.
Preferably, the described coordinate points being greater than predetermined luminance value according to described coordinate points brightness value, the step calculating described facula position comprises:
Coordinate points brightness value is greater than all coordinate points of predetermined luminance value x-axis coordinate figure corresponding respectively and y-axis coordinate figure add up, obtain the total coordinate figure of x-axis and the total coordinate figure of y-axis; Meanwhile, coordinates computed point brightness value is greater than the number of all coordinate points of predetermined luminance value, obtains corresponding hot spot sum;
By the cumulative total coordinate figure of described x-axis and the total coordinate figure of y-axis respectively divided by hot spot sum, obtain corresponding facula position center point coordinate;
Based on described facula position center point coordinate, obtain facula position.
Preferably, described according to described facula deviation amount, adjustment lighting angle, the step of following the tracks of light source position comprises:
According to described facula deviation amount, obtain regulating the speed and adjustment direction corresponding to lighting equipment to be adjusted;
According to described adjustment direction, according to the described described lighting equipment of adjustment of regulating the speed, follow the tracks of light source position.
The embodiment of the present invention also provides a kind of light source tracking system, comprises lighting equipment, also comprises:
To be arranged on above described lighting equipment and to be built-in with the sun adjuster of image capture device, and being arranged on the whirligig below described lighting equipment;
Described sun adjuster is electrically connected with described whirligig, and described sun adjuster utilizes Built-in Image trap setting to catch light spot image corresponding to light source, obtains facula position; Described facula position and the calibrating position preset are compared, obtains facula deviation amount, and by what comprise described facula deviation amount, described whirligig is sent to light signal;
Described whirligig according to described sun adjuster send comprise described facula deviation amount to light signal, the lighting angle of described lighting equipment is adjusted, follow the tracks of light source position;
Wherein, described default calibrating position is the central point of described light spot image.
Preferably, described sun adjuster comprises outer shading bucket, and according to light transmission direction be successively set on described shading bucket inside the optical filter for heat insulation and filtering part sunshine, for complete hot spot imaging convex lens, be shown as the scattering sheet of rear light spot image, the described image capture device taking the light spot image that described scattering sheet shows, the serial ports that produces the described control circuit board to light signal and be arranged on described control circuit board; Described control circuit board is electrically connected with described whirligig by the Serial Port Line be connected on described serial ports.
Preferably, described sun adjuster is vertically set on the top of described lighting equipment and described sun adjuster arranges one end of described optical filter upward.
Preferably, described whirligig comprises and being vertically arranged on below described lighting equipment, for controlling the first turning axle of described lighting equipment deflection, and is horizontally set on below described lighting equipment, for controlling the second turning axle that described lighting equipment deflects up and down; Described first turning axle is fixedly connected with the second turning axle;
And the first motor be fixedly installed on described first turning axle for driving described first turning axle to rotate, described second turning axle is fixedly installed the second motor for driving described second turning axle to rotate.
Preferably, described whirligig also comprises a controller, and described controller is fixedly installed on described first turning axle or the second turning axle; And described controller is provided with serial ports, be electrically connected with described sun adjuster by the Serial Port Line be connected on serial ports;
Described controller is also provided with universal input/output interface, by the described IO interface arranged, described controller is electrically connected with described first motor and the second motor simultaneously, and described controller controls the lighting angle of described lighting equipment by controlling described first motor and the second motor.
Preferably, described first motor and the second motor are stepper motor or direct current generator.
Embodiment of the present invention light source tracking system catches light spot image corresponding to light source by image capture device; According to the described light spot image captured, calculate facula position; The described facula position calculated and the calibrating position preset are compared, obtains facula deviation amount; According to described facula deviation amount, adjustment lighting angle, follows the tracks of light source position.Compared to traditional light source tracking mode, utilize embodiment of the present invention light source tracking system can reach the beneficial effect more accurately following the tracks of light source position, and antijamming capability is stronger, meanwhile, also reduces equipment cost.
Accompanying drawing explanation
Fig. 1 is light source tracking system one embodiment hardware structure schematic diagram of the present invention;
Fig. 2 is sun adjuster one embodiment hardware structure schematic diagram in light source tracking system of the present invention;
Fig. 3 is the facula position one embodiment light transmition schematic diagram obtained corresponding to position of sun different in light source tracking system of the present invention;
Fig. 4 is light source tracking method one embodiment schematic flow sheet of the present invention.
The realization of embodiment of the present invention object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment of the present invention light source tracking method and system can be applied in the application scenarios of arbitrary tracking light source, due to the natural energy source that sun power is free, therefore the applications such as generating, solar energy stove, light importing can be widely used in, in the following embodiment of the present invention, only be described to follow the tracks of this light source of the sun, about light source tracking method and system of the present invention are applied in the situation in the tracking scene of other light sources, the embodiment of the present invention does not specifically repeat.
Please refer to Fig. 1, Fig. 1 is light source tracking system one embodiment hardware structure schematic diagram of the present invention; Fig. 1 shows the using state schematic diagram of light source tracking system of the present invention, as shown in Figure 1, light source tracking system of the present invention comprises lighting equipment 100, also comprises the sun adjuster 200 be arranged on above described lighting equipment 100, and is arranged on the whirligig 300 below described lighting equipment 100; Described sun adjuster 200 is electrically connected with whirligig 300.Wherein, described sun adjuster 200 follows the tracks of light source position according to built-in image capture device, and produce comprise light source position to light signal, and whirligig 300 will be sent to light signal; Be described using camera as image capture device in the embodiment of the present invention.Such as, described sun adjuster 200 utilizes built-in camera to catch light spot image corresponding to light source, obtains facula position; Described facula position and the calibrating position preset are compared, obtains facula deviation amount, and by what comprise described facula deviation amount, described whirligig 300 is sent to light signal; Described whirligig 300 according to described sun adjuster 200 to the described facula deviation amount in light signal, the lighting angle of described lighting equipment 100 is adjusted.Wherein, described default calibrating position is preferably the central point of described light spot image.
It will be appreciated by those skilled in the art that, after described light source tracking system installation, for each light source tracking system when using state, its lighting equipment 100 all to there being best daylighting state, the daylighting state of this best the is corresponding lighting angle of described lighting equipment 100.For CHINESE REGION, in spontaneous phenomenon, the sun all rises in east and drop in west every day, and the position of the sun is constantly changing in the middle of one day, in order to ensure that lighting equipment 100 is in best daylighting state or tries one's best close to best daylighting state, improve energy utilization rate, corresponding to this position of sun comprising in light source position and the present embodiment just needing whirligig 300 to send according to sun adjuster 200 to light signal, adjust the lighting angle of lighting equipment 100, to realize the accurate tracking to solar source.In the embodiment of the present invention, the lighting angle defining described lighting equipment 100 is: described lighting equipment 100 gathers the one side of sunshine and the angle of surface level.The lighting angle of described lighting equipment 100 can be arranged according to the particular hardware configuration of described light source tracking system and concrete environment for use, and the concrete span of the embodiment of the present invention to the lighting angle of described lighting equipment 100 does not limit.
Further, in light source tracking system embodiment of the present invention, in order to ensure that camera can run well when high-speed capture, the built-in camera of described sun adjuster 100 selects the camera possessing high-speed cache.
Embodiment of the present invention light source tracking system comprises lighting equipment, also comprises: to be arranged on above described lighting equipment and to be built-in with the sun adjuster of camera, and being arranged on the whirligig below described lighting equipment; Described sun adjuster is electrically connected with described whirligig, and described sun adjuster utilizes built-in camera to catch light spot image corresponding to light source, obtains facula position; Described facula position and the calibrating position preset are compared, obtains facula deviation amount, and by what comprise described facula deviation amount, described whirligig is sent to light signal; Described whirligig according to described sun adjuster send comprise described facula deviation amount to light signal, the lighting angle of described lighting equipment is adjusted, follow the tracks of light source position.Embodiment of the present invention light source tracking system passes through light spot image corresponding to camera collection sunray, and utilize image recognition technology to realize light source tracking, compared to traditional light source tracking mode, utilize embodiment of the present invention light source tracking system can reach the beneficial effect more accurately following the tracks of light source position, and antijamming capability is stronger; In addition, because camera cost is not high, therefore the embodiment of the present invention also saves the use cost of light source tracking system.
Further, please refer to Fig. 2, Fig. 2 is sun adjuster one embodiment hardware configuration schematic perspective view in light source tracking system of the present invention, as shown in Figure 2, in light source tracking system of the present invention, described sun adjuster 200 comprises and is arranged on described sun adjuster 200 and the outer shading bucket 260 being wrapped in sun adjuster 200 internal component, and according to sunray transmission direction be successively set on described shading bucket 260 inside for heat insulation and optical filter 210 that is filtering part sunshine, for completing the convex lens 220 of hot spot imaging, show by the scattering sheet 230 of the light spot image after the imaging of described convex lens 220, take the camera 240 of the light spot image of display in described scattering sheet 230, and the control circuit board 250 to light signal to produce according to the light spot image that described camera 240 is taken and the serial ports be arranged on described control circuit board.
Please with reference to Fig. 1, described control circuit board 250 is electrically connected with described whirligig 300 by the Serial Port Line 400 be connected on described serial ports.
In the embodiment of the present invention, described sun adjuster 200, by being arranged on outer field cone 260, carrying out shading and heat insulation to the element device be arranged in described sun adjuster 200, manufactures a dark room conditions.By arranging optical filter 210, carry out heat insulation to the sunshine injecting described sun adjuster 200, the electronic devices and components avoiding temperature rising to cause being arranged in described sun adjuster 200 are abnormal; Simultaneously, the described optical filter 210 arranged also possesses the function of optical filtering, thus avoid the solar facula brightness injecting described sun adjuster 200 too high, cause the hot spot in described scattering sheet 230 spread and be unfavorable for that described camera 240 identifies, but also the photo-sensitive cell in described sun adjuster 200 can be damaged.Convex lens 220 in described sun adjuster 200, for completing hot spot imaging, makes the light spot image after imaging not disturb by diffused ray, also not by the impact of small-sized shade (as spot, fly etc.).The light spot image that described control circuit board 250 is taken for the treatment of camera 240, and calculate facula position, described facula position and the calibrating position preset are compared, obtains facula deviation amount; Produce comprise facula deviation amount to light signal, and by produce the facula deviation amount that comprises the serial ports be arranged on described control circuit board 250 is utilized to light signal, whirligig 300 is sent to by Serial Port Line 400, the facula deviation amount that comprises sent according to control circuit board 250 described in described sun adjuster 200 for whirligig 300 to light signal, adjust the lighting angle of described lighting equipment 100.
Further, in the embodiment of the present invention, in order to present picture rich in detail corresponding to hot spot in described scattering sheet 230, described scattering sheet 230 is arranged on the focus place of described convex lens 220.
Further, in the embodiment of the present invention, in order to improve the accuracy of the light spot image gathering display in described scattering sheet 230 when camera 240 is positioned at fixed position, when described optical filter 210, scattering sheet 230 and camera 240 are set, the central point of described optical filter 210, scattering sheet 230 and camera 240 is all positioned on the primary optical axis of described convex lens 220.
Further, in the embodiment of the present invention, in order to accurately follow the trail of position, the seizure sunshine of the sun, described sun adjuster 200 being vertically set on the top of described lighting equipment 100 and described sun adjuster 200 is arranged one end of described optical filter 210 upward.
Please referring again to Fig. 1, as shown in Figure 1, in light source tracking system of the present invention, described whirligig 300 comprises and being vertically arranged on below described lighting equipment 100, for controlling the first turning axle 310 of described lighting equipment 100 deflection, and is horizontally set on below described lighting equipment 100, for controlling the second turning axle 320 that described lighting equipment about 100 deflects; Described first turning axle 310 is fixedly connected with the second turning axle 320; And the first motor 330 be fixedly installed on described first turning axle 310 for driving described first turning axle 310 to rotate, described second turning axle 320 is fixedly installed the second motor 340 for driving described second turning axle 320 to rotate.
Further, described whirligig 300 also comprises a controller 350, described controller 350 is fixedly installed on described first turning axle 310 or the second turning axle 320, and in the whirligig 300 shown in Fig. 1, described controller 350 is arranged on described first turning axle 310; And described controller 350 is provided with serial ports, by being connected to the Serial Port Line 400 on serial ports, described whirligig 300 is electrically connected with described sun adjuster 200.Simultaneously, described controller 350 is also provided with universal input/output interface, by the described IO interface arranged, described controller 350 is electrically connected with described first motor 330 and the second motor 340 simultaneously, facula deviation amount corresponding to light source that comprise that described controller 350 sends according to the described sun adjuster 200 that receives to light signal, control the lighting angle of described lighting equipment 100 by controlling described first motor 330 and the second motor 340.
Further, in the embodiment of the present invention, the motor type of described first motor 330 and the second motor 340 can be selected according to the environment for use of described light source tracking system; Such as, if the environment for use of described light source tracking system is higher (such as to the accuracy requirement of light source tracking, be applied in light to import in corresponding use scenes), then can choice for use stepper motor, thus realize precisely controlling the lighting angle of described lighting equipment 100.If the environment for use of described light source tracking system is such as require higher (in the use scenes of such as solar energy stove or solar electrical energy generation) to the energy utilization rate of sunshine to the energy utilization rate of light source is higher, then can choice for use direct current generator, thus realize controlling fast the lighting angle of described lighting equipment 100.
Based on the description of embodiment described in Fig. 1, Fig. 2, in embodiment of the present invention light source tracking system, take light source as the sun for example is described.After sunshine enters described sun adjuster 200, first carry out heat insulation through described optical filter 210, and weaken sunlight intensity, again through the imaging of described convex lens 220, and form light spot image in described scattering sheet 230 after, caught by the light spot image of camera 240 to display in described scattering sheet 230 being positioned at described scattering sheet 230 rear end, for the ease of carrying out image recognition, described scattering sheet 230 uses white-black pattern, and such as, described scattering sheet 230 is black, and the hot spot be presented in described scattering sheet 230 is white, after capturing the light spot image of display in described scattering sheet 230, light spot image shown in collection is saved in high-speed cache by described camera 240, described control circuit board 250 reads the light spot image of described storage, according to described light spot image, calculate the facula position of hot spot in described scattering sheet 230, and the described facula position calculated and default calibrating position are compared, obtain the side-play amount that facula position is corresponding, and utilize Serial Port Line 400 to be sent to the controller 350 of whirligig 300 by the serial ports be arranged on described control circuit board 250 this side-play amount obtained, controller 350 is by driving first motor 330 and/or the second motor 340, lighting equipment 100 can be controlled on a left side, right, on, under move.After lighting equipment 100 aims at position of sun, controller 350 sends calibration command to sun adjuster 200 (such as, sending the control circuit board 250 of calibration command to described sun adjuster 200), and sun adjuster 200 preserves facula position.In the embodiment of the present invention, by the frequency of 5 times per second, described sun adjuster 200 reports that facula deviation amount is to the controller 350 of whirligig 300 continuously.After the sun moves, facula position changes, the rotational speed that whirligig 300 maps according to described facula deviation amount according to facula deviation amount and sense of rotation adjust the lighting angle of lighting equipment 100, until described side-play amount is lower than default bias amount threshold value, thus complete the tracking to the sun.Such as, when the facula deviation amount that sun adjuster 200 is sent to the controller 350 of whirligig 300 is large, described controller 350 controls described lighting equipment 100 quick rotation, and when described facula deviation amount hour, described controller 350 controls described lighting equipment 100 and carries out fine motion.Again such as, when sun adjuster 200 be sent to light spot image corresponding to the facula deviation amount of the controller 350 of whirligig 300 upwards partially time, then described controller 350 controls described lighting equipment 100 and turns downwards; When sun adjuster 200 is sent to light spot image downward bias corresponding to the facula deviation amount of the controller 350 of whirligig 300, then described controller 350 controls described lighting equipment 100 and upwards turns.
Please refer to Fig. 3, Fig. 3 is the facula position one embodiment light transmition schematic diagram obtained corresponding to position of sun different in light source tracking system of the present invention; As shown in Figure 3, position of sun is different, then the facula position that projects in scattering sheet 230 of sunray is also different; Namely in the position of the sun and scattering sheet 230, the facula position of display is corresponding, the offset information the comprising facula position such as facula deviation amount that controller 350 in whirligig 300 sends according to control circuit board 250 on described sun adjuster 200, the angle of adjustment lighting equipment 100, can complete the accurate tracking to position of sun.
Further, in the embodiment of the present invention, in order to ensure efficiently carrying out image recognition dexterously, use assembly language to programme to the control circuit board 250 in described sun adjuster 200, guarantee that the vulgar single-chip microcomputer in described control circuit board 250 must not lower than 5 seconds/time to the identification frequency of facula position simultaneously.Further, be the image recognition algorithm coordinating control circuit board 250 to use, optimum configuration is carried out to described camera 240; Such as, in a kind of concrete configuration of described light source tracking system, described camera 240 comprises: adopt yuv format, 320*240 resolution, suitable AEC/AGC/AWB/ABF/ABLC parameter etc.
It will be appreciated by those skilled in the art that, above-mentioned to hardware device each in described light source tracking system as sun adjuster 200 and as described in the concrete configuration model of each components and parts in whirligig 300 and the description of design parameter, only exemplary, must not using the restricted adjustment of above-mentioned citing as embodiment of the present invention light source tracking system.In embodiment of the present invention light source tracking system each hardware device as sun adjuster 200 and as described in the concrete configuration model of each components and parts in whirligig 300 and the selection of design parameter, can carry out concrete configuration according to the embody rule scene of described light source tracking system, the concrete value of the embodiment of the present invention to above-mentioned concrete ardware model number and parameter does not limit.
Embodiment of the present invention light source tracking system passes through light spot image corresponding to camera collection sunray, and utilize image recognition technology to realize light source tracking, compared to traditional light source tracking mode, utilize embodiment of the present invention light source tracking system can reach the beneficial effect more accurately following the tracks of light source position, and antijamming capability is stronger, meanwhile, equipment cost is also reduced.
Please refer to Fig. 4, Fig. 4 is light source tracking method one embodiment schematic flow sheet of the present invention.Light source tracking method described in Fig. 4, the described light source tracking system described by embodiment described in Fig. 1 performs.
Based on the description of embodiment described in Fig. 1 to Fig. 3, as shown in Figure 4, embodiment of the present invention light source tracking method comprises the following steps:
Step S01, catch light spot image corresponding to light source by camera;
The described light spot image that step S02, basis capture, calculates facula position;
In the embodiment of the present invention, sun adjuster utilizes built-in camera to catch the light spot image of scattering sheet display; Such as, camera is that described scattering sheet is taken pictures, and obtains corresponding light spot image; The light spot image that sun adjuster identification captures, and the facula position calculating hot spot in described light spot image.
In the embodiment of the present invention, sun adjuster calculates facula position in described light spot image can in the following way: the resolution corresponding according to camera, the pixel value that on the described light spot image obtaining described camera collection, each pixel is corresponding, obtains corresponding hot spot coordinate according to the pixel value obtained.Or the rgb value according to light spot image obtains facula position.Such as, when the light spot image of described camera collection is black white image, the rgb value difference of answering due to these two Color pair of black and white is comparatively large, then described sun adjuster is easy to get hot spot coordinate according to pixel value, and then obtains facula position.
Further, in a preferred embodiment, described sun adjuster calculates the facula position on light spot image by following manner: sun adjuster is that the described light spot image caught sets up coordinate system; Wherein, all corresponding brightness value of each coordinate points in described coordinate system.Obtain each coordinate points in described coordinate system distinguish corresponding coordinate points brightness value, and the described coordinate points brightness value obtained and predetermined luminance value to be compared, obtain the coordinate points that described coordinate points brightness value is greater than predetermined luminance value; Be greater than the coordinate points of predetermined luminance value according to described coordinate points brightness value, calculate described facula position.Such as, sun adjuster according to obtain described coordinate system in each coordinate points institute distinguish correspondence coordinate points brightness value, judge acquisition described coordinate points brightness value whether be greater than predetermined luminance value; If the brightness value of described coordinate points is greater than predetermined luminance value, then sun adjuster identifies this coordinate points and is sunlighted; If the brightness value of described coordinate points is less than or equal to described predetermined luminance value, then sun adjuster identifies this coordinate points and is not sunlighted.Sun adjuster coordinate points brightness value is greater than all coordinate points of predetermined luminance value x-axis coordinate figure corresponding respectively and y-axis coordinate figure add up, obtain the total coordinate figure of x-axis and the total coordinate figure of y-axis; Meanwhile, coordinates computed point brightness value is greater than the number of all coordinate points of predetermined luminance value, obtains corresponding hot spot sum; By the cumulative total coordinate figure of described x-axis and the total coordinate figure of y-axis respectively divided by hot spot sum, obtain corresponding facula position center point coordinate; Based on described facula position center point coordinate, facula position can be obtained.
Step S03, the described facula position calculated and the calibrating position preset to be compared, obtain facula deviation amount;
After getting corresponding facula position, the facula position of acquisition and the calibrating position preset compare by sun adjuster, obtain facula deviation amount; Wherein, described facula deviation amount comprises offset direction and the offset distance of facula position, and described default calibrating position is preferably the central point of described light spot image.
Step S04, according to described facula deviation amount, adjustment lighting angle, follow the tracks of light source position.
After getting facula deviation amount corresponding to facula position, sun adjuster is sent to whirligig by what comprise above-mentioned facula deviation amount to light signal.Because on sun adjuster and whirligig, the two is provided with serial ports, therefore, sun adjuster and whirligig can carry out serial communication by Serial Port Line; Or sun adjuster and whirligig also can be electrically connected by universal input/output interface, thus by the transmission of common data, carry out data interaction.When receive that sun adjuster sends comprise described facula deviation amount to light signal after, described whirligig according to described to the facula deviation amount in light signal, the lighting angle of adjustment lighting equipment, thus realize accurate tracking to light source position.
Further, in the embodiment of the present invention, described select assembling device receive sun adjuster send the facula deviation amount that comprises to after light signal, according to described facula deviation amount, obtain regulating the speed and adjustment direction corresponding to lighting equipment to be adjusted; And according to described adjustment direction, according to the described described lighting equipment of adjustment of regulating the speed, follow the tracks of light source position.
The embodiment of the present invention passes through light spot image corresponding to camera collection sunray, and utilize image recognition technology to realize light source tracking, compared to traditional light source tracking mode, the embodiment of the present invention can reach the beneficial effect more accurately following the tracks of light source position, and antijamming capability is stronger, meanwhile, equipment cost is also reduced.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or device and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or device.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the device comprising this key element and also there is other identical element.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only the preferred embodiments of the present invention; not thereby its scope of the claims is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; directly or indirectly be used in the technical field that other are relevant, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a light source tracking method, is characterized in that, comprises the following steps:
Light spot image corresponding to light source is caught by image capture device;
According to the described light spot image captured, calculate facula position;
The described facula position calculated and the calibrating position preset are compared, obtains facula deviation amount;
According to described facula deviation amount, adjustment lighting angle, follows the tracks of light source position;
Wherein, described default calibrating position is the central point of described light spot image.
2. the method for claim 1, is characterized in that, the described light spot image that described basis captures, and the step calculating facula position comprises:
For the described light spot image caught sets up coordinate system; Wherein, all corresponding brightness value of each coordinate points in described coordinate system;
Obtain each coordinate points in described coordinate system distinguish corresponding coordinate points brightness value, and the described coordinate points brightness value obtained and predetermined luminance value to be compared, obtain the coordinate points that described coordinate points brightness value is greater than predetermined luminance value;
Be greater than the coordinate points of predetermined luminance value according to described coordinate points brightness value, calculate described facula position.
3. method as claimed in claim 2, it is characterized in that, the described coordinate points being greater than predetermined luminance value according to described coordinate points brightness value, the step calculating described facula position comprises:
Coordinate points brightness value is greater than all coordinate points of predetermined luminance value x-axis coordinate figure corresponding respectively and y-axis coordinate figure add up, obtain the total coordinate figure of x-axis and the total coordinate figure of y-axis; Meanwhile, coordinates computed point brightness value is greater than the number of all coordinate points of predetermined luminance value, obtains corresponding hot spot sum;
By the cumulative total coordinate figure of described x-axis and the total coordinate figure of y-axis respectively divided by hot spot sum, obtain corresponding facula position center point coordinate;
Based on described facula position center point coordinate, obtain facula position.
4. the method as described in any one of claims 1 to 3, is characterized in that, described according to described facula deviation amount, adjustment lighting angle, and the step of following the tracks of light source position comprises:
According to described facula deviation amount, obtain regulating the speed and adjustment direction corresponding to lighting equipment to be adjusted;
According to described adjustment direction, according to the described described lighting equipment of adjustment of regulating the speed, follow the tracks of light source position.
5. a light source tracking system, comprises lighting equipment, it is characterized in that, also comprises:
To be arranged on above described lighting equipment and to be built-in with the sun adjuster of image capture device, and being arranged on the whirligig below described lighting equipment;
Described sun adjuster is electrically connected with described whirligig, and described sun adjuster utilizes Built-in Image trap setting to catch light spot image corresponding to light source, obtains facula position; Described facula position and the calibrating position preset are compared, obtains facula deviation amount, and by what comprise described facula deviation amount, described whirligig is sent to light signal;
Described whirligig according to described sun adjuster send comprise described facula deviation amount to light signal, the lighting angle of described lighting equipment is adjusted, follow the tracks of light source position;
Wherein, described default calibrating position is the central point of described light spot image.
6. light source tracking system as claimed in claim 5, it is characterized in that, described sun adjuster comprises outer shading bucket, and according to light transmission direction be successively set on described shading bucket inside the optical filter for heat insulation and filtering part sunshine, for complete hot spot imaging convex lens, be shown as the scattering sheet of rear light spot image, the described image capture device taking the light spot image that described scattering sheet shows, the serial ports that produces the described control circuit board to light signal and be arranged on described control circuit board; Described control circuit board is electrically connected with described whirligig by the Serial Port Line be connected on described serial ports.
7. the light source tracking system as described in claim 5 or 6, is characterized in that, described sun adjuster is vertically set on the top of described lighting equipment and described sun adjuster arranges one end of described optical filter upward.
8. the light source tracking system as described in claim 5 or 6, it is characterized in that, described whirligig comprises and being vertically arranged on below described lighting equipment, for controlling the first turning axle of described lighting equipment deflection, and is horizontally set on below described lighting equipment, for controlling the second turning axle that described lighting equipment deflects up and down; Described first turning axle is fixedly connected with the second turning axle;
And the first motor be fixedly installed on described first turning axle for driving described first turning axle to rotate, described second turning axle is fixedly installed the second motor for driving described second turning axle to rotate.
9. light source tracking system as claimed in claim 8, it is characterized in that, described whirligig also comprises a controller, and described controller is fixedly installed on described first turning axle or the second turning axle; And described controller is provided with serial ports, be electrically connected with described sun adjuster by the Serial Port Line be connected on serial ports;
Described controller is also provided with universal input/output interface, by the described IO interface arranged, described controller is electrically connected with described first motor and the second motor simultaneously, and described controller controls the lighting angle of described lighting equipment by controlling described first motor and the second motor.
10. light source tracking system as claimed in claim 8, it is characterized in that, described first motor and the second motor are stepper motor or direct current generator.
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