CN106341926B - The LED digital driving powers and its control method of illumination are controlled based on image recognition - Google Patents
The LED digital driving powers and its control method of illumination are controlled based on image recognition Download PDFInfo
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- CN106341926B CN106341926B CN201610873313.7A CN201610873313A CN106341926B CN 106341926 B CN106341926 B CN 106341926B CN 201610873313 A CN201610873313 A CN 201610873313A CN 106341926 B CN106341926 B CN 106341926B
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- led
- ethernet
- drive power
- host computer
- communication
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a kind of LED digital driving powers and its control method for controlling to illuminate based on image recognition, it controls the LED digital driving powers of illumination based on image recognition, including camera, ethernet router, host computer, ethernet module communicates, LED drive power and LED, multiple cameras connect ethernet router jointly, too network router connects host computer, too network router also connects its corresponding LED drive power respectively by the communication of multiple ethernet modules, host computer passes through ethernet router and ethernet module Control on Communication LED drive power, LED drive power connects LED；The present invention has less data processing amount, is adapted to many LED lamp tube Lighting controls of large area and driving, change of the energy according to the image brightness signal and pixel grey scale signal of camera, automatically control the size that LED drive power opens number and driving power, the change of the adaptive lighting environment of energy, LED service life, the energy-conservation of extension.
Description
Technical field
The present invention relates to high direct voltage high frequency switch power field, more particularly to a kind of illumination is controlled based on image recognition
LED digital driving powers and its control method.
Background technology
With China's public infrastructure development progressively and perfect, the lighting apparatus of public place is increasingly popular, such as public
The place such as road roadside and park；In recent years, China occupied 15% or so of national total power consumption on electric consumption on lighting, wherein, it is public
The electricity consumption in place altogether occupies 35% or so, and shows the form that progressively rises.
The problem of power consumption is serious is illuminated for public place, the public place of some areas starts to shine using energy-saving LED
Bright lamp, or intelligent lighting system is used, to reduce public place power consumption.
LED has the advantages that low-power consumption, high brightness, long lifespan, environmentally safe, compared with ordinary incandescent lamp, together
Under brightness of illumination, the power consumption of LED is only the 10% of ordinary incandescent lamp, can also save 90% electric energy.But LED is to driving electricity
Source has certain requirement, and LED illumination lamp needs commutation system to export constant direct current, thus, the design of LED drive power
Optimality has to performances such as efficiency, the service lifes of LED to be directly affected.
Existing intelligent lighting system, mainly uses pyroscan to detect the presence of human body, and according to
Human body whether is detected to realize the opening and closing of intelligent control light；Infrared detector has simple in construction, cost low, small power consumption
Advantage；But infrared detector is easily disturbed, and detection range is short by environment temperature, it is impossible to accurately judge.For infrared
The problem of detecting intelligent control, discloses a kind of intelligent light control system and its control method in the prior art（The patent No.：
CN201010275058.9, publication date：2011.02.09）, the intelligent light control system based on camera is described, is passed through
Human detection module and position of human body analysis module judge that human body is present and its position, realize intelligent control corresponding region light；
But it is larger using the data processing amount required for human detection module and position of human body analysis module, and it is not suitable for margin of roads
Car lighting use.
The content of the invention
The purpose to be realized of the invention is：There is provided it is a kind of have that data processing amount is small, control illumination reaction is accurate and
The LED drive power and its control method of LED efficiency high and service life length.
To achieve the above object, the technical solution adopted in the present invention is：A kind of LED for controlling to illuminate based on image recognition
Digital driving power, it is characterised in that：Including camera, ethernet router, host computer, ethernet module communication, LED
Driving power supply and LED, multiple cameras connect ethernet router, too network router connection host computer, too net jointly
Router also connects its corresponding LED drive power respectively by the communication of multiple ethernet modules, and host computer passes through ether
Network router and ethernet module Control on Communication LED drive power, LED drive power connection LED.
Illustrate as further optimization, the camera is black and white camera or colour imagery shot.
Illustrate that the host computer includes image processing and analysis module as further optimization, for motion mesh
Mark is detected, and present intensity is detected.
Illustrate as further optimization, described image processing and analysis module are by frame difference method, by Fixed Time Interval
Each pixel in two images subtracts each other, and makees threshold process, realizes the subtractive figure of only 255 and 0 two kind of gray scale, then to it
Subtractive figure does region segmentation, and each cut zone is corresponding with the illumination region of each LED, total further according to the gray value in each region
With, after being made comparisons with given threshold, feed back comparison signal, so that realize that each cut zone feeds back a comparison signal,
It is controlled so as to realize according to regional movement target detection situation.
As further optimization explanation, described image processing is also carried out with analysis to the gray value of each pixel in image
Value is calculated, and calculates the gray average of image, and is made comparisons with given threshold, comparison signal is exported, so as to realize according to brightness
The control of condition.
Illustrate that the LED drive power includes wave filter, rectifier filter, high-frequency converter, height as further optimization
Frequency power transformer, filtering high-frequency rectifier device, signal processing circuit, drive circuit, auxiliary power supply, STM8F103 single-chip microcomputers and communication mould
Block circuit, wave filter, rectifier filter, high-frequency converter, high frequency transformer and filtering high-frequency rectifier device are sequentially connected, and high frequency is whole
The output end connection LED of wave filter is flowed, the output end of rectifier filter is also connected with signal processing circuit, signal processing circuit
Output end connection STM8F103 single-chip microcomputers, STM8F103 single-chip microcomputers be also connected with drive circuit, communication module circuitry and auxiliary supply
Electricity, drive circuit connection high-frequency converter, auxiliary power supply connection drive circuit, STM8F103 single-chip microcomputers, high-frequency converter and height
Frequency power transformer.
Illustrate as further optimization, the ethernet module communication uses RS485 communication modes or RS232 communication modes
In any one.
Illustrate as further optimization, the ethernet module communication using WiFi communication module or GPRS communication modules or
Any one wireless communication module in gsm communication module.
Illustrate that the photo-sensitive cell of the camera uses CCD as further optimization.
Illustrate that the camera uses infrared pick-up as further optimization.
Illustrate that the filter circuit includes two inputs, two output ends, a ground wires as further optimization
PE, common mode inductance T1, differential mode filter capacitor C1 and C0, common mode filtering electric capacity C2 and C3 and filter inductance L1 and L2, common mode electricity
Sense T1 two inputs connect differential mode filter capacitor C1 two ends respectively, and common mode inductance T1 two output ends connect filtered electrical respectively
Feel L1 and L2 input, the two ends after differential mode filter capacitor C0 two ends and common mode filtering electric capacity C2 connect with C3 are connected
L1 and L2 two output ends, common mode filtering electric capacity C2 and C3 tie point connection ground wire PE.
Illustrate as further optimization, in order to realize the good filter effect of wave filter basic circuit, common mode filtering electric capacity
C2 and C3 uses 2.2nF ceramic condenser, and differential mode filter capacitor C1 and C0 use 53nF thin-film capacitor.
Illustrate as further optimization, corresponding to the above-mentioned LED digital driving powers for controlling to illuminate based on image recognition
Control method, it is characterised in that：Comprise the following steps：
S1：Camera is time interval collection black white image with fixation, computer is input to, by the image procossing of computer
Each pixel in the two images of Fixed Time Interval is subtracted each other with analysis module, and makees threshold process, only 255 are realized
With the subtractive figure of 0 two kinds of gray scales；
S2：Region segmentation is done to its subtractive figure again, each cut zone is corresponding with the illumination region of each LED；
S3：Further according to the gray value summation in each region, after being made comparisons with given threshold, feed back comparison signal, so that real
Now each cut zone feeds back a comparison signal；
S4：Image processing and analysis module carries out gray average calculating to the original image gathered in S1 steps, according to original
The gray value of each pixel in beginning picture, obtains average, and is made comparisons with given threshold, exports comparison signal；
S5：Comparison signal in comparison signal and S4 of the computer in S3, controls the LED of each illumination region to open
Closed state.
LED digital driving powers and its control method of the present invention for controlling to illuminate based on image recognition, by using
Frames differencing processing mode, the data processing amount mode of relatively conventional human detection module, with smaller data processing amount,
And the image procossing and analysis and Control mode, it is the dynamic detection being oriented in image range, as long as that is, the setting face of having more than
Long-pending goer, such as pedestrian or driving vehicle or unknown large volume goer, just can trigger light and open, this kind of image procossing
There is widely detection object, and with more accurately judging, reduce the probability of erroneous judgement with analysis and Control mode.
Meanwhile, the system can be detected to present intensity, when present intensity is more than setting value, and light, which is in, closes shape
State, when present intensity is less than setting value, opening and closing is in further according to the testing result control light of frames differencing facture.
In addition, the LED drive power in the present invention employs preferably constant voltage circuit structure design, and its component parameters is adopted
Matched with preferably parameter, the efficiency high of its LED and service life is long.
Beneficial effect：LED digital driving powers and its controlling party of the present invention for controlling to illuminate based on image recognition
Method, with less data processing amount, and with wide detection object and with more accurately judging；Can be according to shooting
The change of the image brightness signal and pixel grey scale signal of head, automatically controls LED drive power and opens number and driving power
Size, can adaptive lighting environment change, be adapted to many LED lamp tube Lighting controls of large area and driving, its LED driven
With higher energy-saving effect and long service life.
Brief description of the drawings
Fig. 1 is the overall frame structure figure of the embodiment of the present invention one；
Fig. 2 is the theory diagram of LED drive power in the embodiment of the present invention one；
Fig. 3 is the circuit structure diagram of LED drive power in the embodiment of the present invention one；
Fig. 4 is the circuit diagram of communication module circuitry in the embodiment of the present invention one.
Embodiment
Below in conjunction with the accompanying drawing and operation principle in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is entered
Row is clearly and completely described；Only a part of embodiment of the invention described in embodiment, rather than whole implementation
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.
Embodiment one：
A kind of LED digital driving powers for controlling to illuminate based on image recognition, its overall frame structure figure such as Fig. 1, including
Camera, ethernet router, host computer, ethernet module communication, LED drive power and LED, multiple cameras are total to
With connection ethernet router, too network router connection host computer, too network router is also logical by multiple ethernet modules
Letter connects its corresponding LED drive power respectively, and host computer passes through ethernet router and ethernet module Control on Communication
LED drive power, LED drive power connection LED；
The camera is black and white camera or colour imagery shot；
The host computer includes image processing and analysis module, for being detected to moving target, and to working as
Preceding brightness is detected；
Described image processing and analysis module are by frame difference method, by each pixel in the two images of Fixed Time Interval
Point subtracts each other, and makees threshold process, realizes the subtractive figure of only 255 and 0 two kind of gray scale, then does region segmentation to its subtractive figure, respectively
Cut zone is corresponding with the illumination region of each LED, further according to the gray value summation in each region, is made comparisons with given threshold
Afterwards, feed back comparison signal, so as to realize that each cut zone feeds back a comparison signal, so as to realize according to regional movement
Target detection situation is controlled；
Meanwhile, described image processing also carries out mean value computation with analysis to the gray value of each pixel in image, calculates
The gray average of image, and made comparisons with given threshold, comparison signal is exported, so as to realize the control according to brightness conditions.
It is used as being further elaborated with for above-mentioned embodiment, the LED drive power, its theory diagram such as Fig. 2, its electricity
Line structure figure such as Fig. 3, including wave filter, rectifier filter, high-frequency converter, high frequency transformer, filtering high-frequency rectifier device, signal
Process circuit, drive circuit, auxiliary power supply, STM8F103 single-chip microcomputers and communication module circuitry, wave filter, rectifier filter, height
Frequency converter, high frequency transformer and filtering high-frequency rectifier device are sequentially connected, the output end connection LED of filtering high-frequency rectifier device,
The output end of rectifier filter is also connected with signal processing circuit, and the output end of signal processing circuit connects STM8F103 single-chip microcomputers,
STM8F103 single-chip microcomputers are also connected with drive circuit, communication module circuitry and auxiliary power supply, and drive circuit connection high-frequency converter is auxiliary
Help power supply connection drive circuit, STM8F103 single-chip microcomputers, high-frequency converter and high frequency transformer.
As being further elaborated with for above-mentioned embodiment, the ethernet module communication uses RS485 communication modes
Or any one in RS232 communication modes, its communication module circuitry is as shown in Figure 4.
As being further elaborated with for above-mentioned embodiment, the photo-sensitive cell of the camera uses CCD.
As being further elaborated with for above-mentioned embodiment, the camera uses infrared pick-up.
As being further elaborated with for above-mentioned embodiment, the filter circuit, as shown in figure 3, it is inputted and defeated
Go out including two inputs, two output ends and a ground wire PE, its circuit includes common mode inductance T1, differential mode filter capacitor C1,
C0, common mode filtering electric capacity C2, C3, filter inductance L1, L2, common mode inductance T1 two inputs connect differential mode filter capacitor C1 respectively
Two ends, common mode inductance T1 two output ends connect filter inductance L1 and L2 input, the two of differential mode filter capacitor C0 respectively
End and common mode filtering electric capacity C2 are connected L1 and L2 two output ends, common mode filtering electric capacity C2 and C3 with the two ends after C3 series connection
Tie point connection ground wire PE.
As being further elaborated with for above-mentioned embodiment, in order to realize that the good filtering of wave filter basic circuit is imitated
Really, common mode filtering electric capacity C2 and C3 uses 2.2nF ceramic condenser, and differential mode filter capacitor C1 and C0 use 53nF thin-film electro
Hold.
As further illustrating for above-mentioned embodiment, corresponding to the above-mentioned LED numerals for controlling to illuminate based on image recognition
The control method of driving power supply, including：
S1：Camera is time interval collection black white image with fixation, computer is input to, by the image procossing of computer
Each pixel in the two images of Fixed Time Interval is subtracted each other with analysis module, and makees threshold process, only 255 are realized
With the subtractive figure of 0 two kinds of gray scales；
S2：Region segmentation is done to its subtractive figure again, each cut zone is corresponding with the illumination region of each LED；
S3：Further according to the gray value summation in each region, after being made comparisons with given threshold, feed back comparison signal, so that real
Now each cut zone feeds back a comparison signal；
S4：Image processing and analysis module carries out gray average calculating to the original image gathered in S1 steps, according to original
The gray value of each pixel in beginning picture, obtains average, and is made comparisons with given threshold, exports comparison signal；
S5：Comparison signal in comparison signal and S4 of the computer in S3, controls the LED of each illumination region to open
Closed state.
As being further elaborated with for above-mentioned embodiment, its circuit parameter is：Input voltage is exchange 180-270V,
The 1W white LED lamps of 20 series connection of load, maximum output current is 350mA, and output voltage is 30-60V direct currents, maximum work output
Rate is 20W.
Embodiment two
It is with the difference of embodiment one：The photo-sensitive cell of the camera uses CMOS.
Embodiment three
It is with the difference of embodiment one：The ethernet module communication is using WiFi communication module or GPRS communication moulds
Any one wireless communication module in block or gsm communication module.
Claims (6)
1. a kind of LED digital driving powers for controlling to illuminate based on image recognition, it is characterised in that：Including camera, Ethernet
Router, host computer, ethernet module communication, LED drive power and LED, multiple cameras connect Ethernet jointly
Router, ethernet router connection host computer, ethernet router is also connected respectively by the communication of multiple ethernet modules
Its corresponding LED drive power is connect, host computer drives electricity by ethernet router and ethernet module Control on Communication LED
Source, LED drive power connection LED；The host computer includes image processing and analysis module, and described image processing is with dividing
Module is analysed by frame difference method, each pixel in the two images of Fixed Time Interval is subtracted each other, and makees threshold process, is realized
Only 255 and the subtractive figure of 0 two kind of gray scale, then region segmentation, the lighting area of each cut zone and each LED are done to its subtractive figure
Domain is corresponding, further according to the gray value summation in each region, after being made comparisons with given threshold, feeds back one to each cut zone
Comparison signal；Described image processing also carries out mean value computation with analysis module to the gray value of each pixel in original image, calculates
Go out the gray average of image, and made comparisons with given threshold, export comparison signal.
2. the LED digital driving powers according to claim 1 for controlling to illuminate based on image recognition, it is characterised in that：Institute
Camera is stated for black and white camera or colour imagery shot.
3. the LED digital driving powers according to claim 1 for controlling to illuminate based on image recognition, it is characterised in that：Institute
Stating LED drive power includes wave filter, rectifier filter, high-frequency converter, high frequency transformer, filtering high-frequency rectifier device, signal
Process circuit, drive circuit, auxiliary power supply, STM8F103 single-chip microcomputers and communication module circuitry, wave filter, rectifier filter, height
Frequency converter, high frequency transformer and filtering high-frequency rectifier device are sequentially connected, the output end connection LED of filtering high-frequency rectifier device,
The output end of rectifier filter is also connected with signal processing circuit, and the output end of signal processing circuit connects STM8F103 single-chip microcomputers,
STM8F103 single-chip microcomputers are also connected with drive circuit, communication module circuitry and auxiliary power supply, and drive circuit connection high-frequency converter is auxiliary
Help power supply connection drive circuit, STM8F103 single-chip microcomputers, high-frequency converter and high frequency transformer.
4. the LED digital driving powers according to claim 3 for controlling to illuminate based on image recognition, it is characterised in that：Institute
Ethernet module communication is stated using any one in RS485 communication modes or RS232 communication modes.
5. the LED digital driving powers according to claim 3 for controlling to illuminate based on image recognition, it is characterised in that：Institute
Stating wave filter includes two inputs, two output ends, ground wire PE, common mode inductance T1, differential mode filter capacitor C1 and C0, altogether
Mould filter capacitor C2 and C3 and filter inductance L1 and L2, common mode inductance T1 two inputs connect differential mode filter capacitor respectively
C1 two ends, common mode inductance T1 two output ends connect filter inductance L1 and L2 input respectively, differential mode filter capacitor C0's
Two ends after two ends and common mode filtering electric capacity C2 connect with C3 be connecteds L1 and L2 two output ends, common mode filtering electric capacity C2 and
C3 tie point connection ground wire PE.
6. a kind of control method for the LED digital driving powers for controlling to illuminate based on image recognition, it is characterised in that：Including as follows
Step：
S1：The host computer image that acquisition camera is sent at regular intervals, then host computer image is entered
Row shaping correction process, then region segmentation is done to it, each cut zone is corresponding with the illumination region of each LED；
S2：Each pixel in subregion, Fixed Time Interval two images is subtracted each other, and makees threshold process, is realized
Only 255 and the subtractive figure of 0 two kind of gray scale；
S3：Further according to the gray value summation in each region, after being made comparisons with given threshold, feed back comparison signal, so as to realize every
Individual cut zone feeds back a comparison signal；
S4：Image processing and analysis module carries out gray average calculating to the original image gathered in S1 steps, according to original graph
The gray value of each pixel in piece, obtains average, and is made comparisons with given threshold, exports comparison signal；
S5：Comparison signal in comparison signal and S4 of the computer in S3, controls the LED drive power of each illumination region
The size of pwm signal dutycycle, realizes LED Power Control.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610873313.7A CN106341926B (en) | 2016-10-08 | 2016-10-08 | The LED digital driving powers and its control method of illumination are controlled based on image recognition |
Applications Claiming Priority (1)
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| CN201610873313.7A CN106341926B (en) | 2016-10-08 | 2016-10-08 | The LED digital driving powers and its control method of illumination are controlled based on image recognition |
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| CN106341926B true CN106341926B (en) | 2017-10-31 |
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| CN109272938B (en) * | 2018-11-23 | 2020-12-04 | 京东方科技集团股份有限公司 | Display screen, pixel circuit unit and control method thereof |
| CN109602373B (en) * | 2018-12-06 | 2020-08-14 | 浙江思密达智能装备有限公司 | Foam detection alarm mechanism |
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| JP3345350B2 (en) * | 1998-05-27 | 2002-11-18 | 富士通株式会社 | Document image recognition apparatus, method thereof, and recording medium |
| CN101482685B (en) * | 2008-01-10 | 2011-04-13 | 宝山钢铁股份有限公司 | Apparatus for remaining stabilization of image gray collected by camera |
| CN101969718B (en) * | 2010-09-08 | 2013-10-02 | 无锡中星微电子有限公司 | Intelligent lighting control system and control method |
| CN102946663A (en) * | 2012-05-18 | 2013-02-27 | 南昌绿扬光电科技有限公司 | Image recognition intelligent illumination control system and control method thereof |
| CN104470058B (en) * | 2014-10-10 | 2017-04-05 | 江苏科技大学 | A kind of control method of subregion lighting energy-saving switch control system |
| CN104678963B (en) * | 2015-02-03 | 2017-07-21 | 葛武 | A kind of system and method for the acquisition instrument facility information based on computer vision |
| CN104902640A (en) * | 2015-06-06 | 2015-09-09 | 刘胜泉 | Monitoring apparatus of LED lamp |
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