CN106455224A - Adaptive auxiliary light source light emission generation device and auxiliary light source regulation method - Google Patents
Adaptive auxiliary light source light emission generation device and auxiliary light source regulation method Download PDFInfo
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- CN106455224A CN106455224A CN201610960639.3A CN201610960639A CN106455224A CN 106455224 A CN106455224 A CN 106455224A CN 201610960639 A CN201610960639 A CN 201610960639A CN 106455224 A CN106455224 A CN 106455224A
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- light source
- led
- secondary light
- circuit
- control circuit
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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]
Abstract
The invention relates to the technical field of lighting, in particular to an adaptive auxiliary light source light emission generation device and an auxiliary light source regulation method. The adaptive auxiliary light source light emission generation device comprises a detection control device, an LED control circuit and an auxiliary light source. An intelligent terminal with a photographing function is adopted as the detection control device, the detection control device conducts data transmission with the LED control circuit through a Bluetooth module, and the detection control device collects luminance, color temperature and chrominance information of the auxiliary light source so that the LED control circuit can drive and adjust the auxiliary light source. Through mobile phone software for luminance, color temperature and chrominance detection, luminance, color temperature and chrominance values preset by a photographer are sent to an LED auxiliary light emission device through a Bluetooth system, color temperature and chrominance values generated by the light emission device are constantly regulated through the circuit, the difference value between the luminance, color temperature and chrominance values and the luminance, color temperature and chrominance values set by the photographer is constantly reduced through mobile phone detection and comparison, and the auxiliary light source light emission generation device with the required luminance, color temperature and chrominance values is obtained.
Description
Technical field
The present invention relates to lighting technical field, more particularly to self adaptation secondary light source light, generator and secondary light source are adjusted
Section method.
Background technology
In modern photography technology, the brightness colour temperature aberration of photographic background light is self-evident to the impact importance being imaged
's.The difference of brightness, directly affects definition, contrast and the artistic effect of photography.The photo-sensitive cell of video camera does not possess
The adaptability of human eye uniqueness, so, the requirement to light source color temperature is stricter.The change of colour temperature must be in the balance colour temperature of regulation
In the range of tolerance, once exceeding the scope, the picture color reduction distortion of video camera recording is may result in.The high picture of colour temperature
Partially blue, the low then picture of colour temperature is partially red.The height of light source color temperature also contributes to the light levels of shot by camera scenery color, i.e.,
Same scenery can present different light levels under the light source lighting of different-colour.The colour difference signal of bias light is namely
The trichromatic ratio of RGB will have a strong impact on the artistic effect of color, contrast or the pursuit of imaging.
Content of the invention
In order to solve above-mentioned technical problem, first purpose of the present invention is to provide a kind of good and convenient use of effect
Self adaptation secondary light source lights generating meanss, and second object of the present invention is to provide a kind of regulation side of self adaptation secondary light source
Method.
In order to above-mentioned first purpose is realized, following technical scheme is present invention employs：
Self adaptation secondary light source lights generating meanss, including detection control apparatus, LED control circuit and secondary light source, the inspection
Control device is surveyed using the intelligent terminal with camera function, the detection control apparatus is by bluetooth module and LED control electricity
Road carries out data transmission, and the bluetooth module adopts CC2540 chip, and the detection control apparatus gathers the brightness of secondary light source
Colour temperature chrominance information drives adjustment secondary light source in order to LED control circuit；The LED control circuit includes power circuit, master
Chip, reset circuit, clock circuit, software unloading circuit and control interface, the power circuit is passed through using 7.5V lithium battery
78L05 and LM1117-3.3 voltage stabilizing provides the power supply of whole LED control circuit, and the master chip is using depositing with 20KFLASH
The STM32F103RBT6 chip of storage program, the reset circuit adopts RC reset circuit；The clock circuit adopts 8MHz crystal oscillator
Dominant frequency, clock adopts 32.768KHz；The software unloading circuit adopts RS232 serial ports；It is also connected with the master chip coloured
Temperature, aberration, intednsity circuit and TFT interface；The secondary light source adopts multigroup LED splicing construction.
Preferably：The secondary light source includes L-type sheet material and high-power paster LED, the high-power paster LED
It is separately positioned on two sides of L-type sheet material and connects the junction of a side.
Preferably：The secondary light source is using eight sections or the end to end structure of six section LED light rods or employing
Eight sections or six save LED light rods connected structure side by side.
In order to above-mentioned second purpose is realized, following technical scheme is present invention employs：
A kind of control method of self adaptation secondary light source, using mobile phone, LED control circuit, bluetooth module and secondary light source, including
Following steps：
S1. according to different scenes demand, annular secondary light source, L-shaped secondary light source or rectangle secondary light source are selected, and will
LED control circuit is connected with bluetooth module and secondary light source with respectively；
S2. mobile phone is mutually wirelessly connected by bluetooth module with LED control circuit, carries out multi-point；
S3., the colour temperature of needs, aberration, brightness value are set on mobile phone, and LED control circuit is sent to by bluetooth；
S4.LED control circuit is by the LED electricity required for the LED colour temperature of the numerical value for receiving and advance debugging, aberration, brightness value
Being pressed with valid value carries out comparison of tabling look-up, and then exports corresponding voltage effective value by PWM ripple to control colour temperature, aberration, according to color
Warm colour difference relation each other, adjusts color temperature value first, then according to the monochromatic LED of impact colour temperature maximum, adjusts other
The aberration ratio of color；Finally by the output of Control white light source, corresponding voltage effective value is exported in conjunction with PWM ripple and come
Control brightness adjustment；
S5. mobile phone detects the colour temperature of secondary light source, aberration, brightness value by photographic head, and by the numerical value for detecting with before
The numerical value of setting compares, if two groups of numerical value have error, returns S4 and continues adjustment, if two groups of numerical value do not have error, should
Group data preservation.
The present invention detects brightness colour temperature aberration software by mobile phone, according to the setting value of the brightness colour temperature aberration of cameraman,
LED auxiliary illuminating device is sent to by Bluetooth system, by the colour temperature of circuit constantly regulate light-emitting device generation, aberration
Value, through mobile phone detection contrast, constantly reduces the brightness colour temperature aberration difference for setting with cameraman, the final brightness for realizing requiring
Colour temperature, value of chromatism secondary light source light generator.
Description of the drawings
Fig. 1 is principle of the invention block diagram.
Fig. 2 is the mini system hardware circuit diagram of the present invention.
Fig. 3 is the bluetooth nodes circuit diagram of the present invention.
Fig. 4 is colour temperature, aberration, intednsity circuit and the TFT interface of the present invention.
Fig. 5 is the workflow diagram of the present invention.
Fig. 6 is the networking flow chart of detection control apparatus of the present invention, LED control circuit and secondary light source.
Fig. 7 is the LED secondary light source structural design drawing of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In describing the invention, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " clockwise ", " inverse
The orientation of the instructions such as hour hands " or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of description originally
Invention and simplification description, rather than indicate or imply that the device of indication or element must be with specific orientation, with specific square
Position construction and operation, are therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In describing the invention, unless otherwise stated, " multiple " are meant that two
Individual or two or more, unless otherwise clearly restriction.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；It can be machine
Tool connection, or electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two units
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood as the case may be at this
Concrete meaning in bright.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score
The first and second feature directly contacts can be included, it is also possible to be not directly contact including the first and second features but by it
Between other characterisation contact.And, fisrt feature second feature " on ", " top " and " above " include that first is special
Levying directly over second feature and oblique upper, or fisrt feature level height is merely representative of higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
Self adaptation secondary light source as shown in Fig. 1-Fig. 7 lights generating meanss, including detection control apparatus, LED control electricity
Road and secondary light source, the detection control apparatus adopts the intelligent terminal with camera function, and the detection control apparatus passes through
Bluetooth module is carried out data transmission with LED control circuit, and the bluetooth module adopts CC2540 chip, the detection control apparatus
The brightness colour temperature chrominance information of collection secondary light source drives adjustment secondary light source in order to LED control circuit；The LED control electricity
Road includes power circuit, master chip, reset circuit, clock circuit, software unloading circuit and control interface, and the power circuit is adopted
The power supply of whole LED control circuit is provided through 78L05 and LM1117-3.3 voltage stabilizing with 7.5V lithium battery, the master chip is adopted
With the STM32F103RBT6 chip with 20KFLASH storage program, the reset circuit is using RC reset circuit；The clock
Circuit adopts 8MHz crystal oscillator dominant frequency, and clock adopts 32.768KHz；The software unloading circuit adopts RS232 serial ports；The main core
Colour temperature, aberration, intednsity circuit and TFT interface is also associated with piece；The secondary light source adopts multigroup LED splicing construction.
The secondary light source includes L-type sheet material and high-power paster LED, and the high-power paster LED is separately positioned on L-type
On two sides of the sheet material and even junction of a side.The secondary light source may also be employed eight sections or six section LED light rod head
The connected structure of tail or using eight sections or six section LED light rods connected structure side by side.
A kind of control method of self adaptation secondary light source, using mobile phone, LED control circuit, bluetooth module and secondary light source,
Comprise the following steps：
S1. according to different scenes demand, annular secondary light source, L-shaped secondary light source or rectangle secondary light source are selected, and will
LED control circuit is connected with bluetooth module and secondary light source with respectively；
S2. mobile phone is mutually wirelessly connected by bluetooth module with LED control circuit, carries out multi-point；
S3., the colour temperature of needs, aberration, brightness value are set on mobile phone, and LED control circuit is sent to by bluetooth；
S4.LED control circuit is by the LED electricity required for the LED colour temperature of the numerical value for receiving and advance debugging, aberration, brightness value
Being pressed with valid value carries out comparison of tabling look-up, and then exports corresponding voltage effective value by PWM ripple to control colour temperature, aberration, according to color
Warm colour difference relation each other, adjusts color temperature value first, then according to the monochromatic LED of impact colour temperature maximum, adjusts other
The aberration ratio of color；Finally by the output of Control white light source, corresponding voltage effective value is exported in conjunction with PWM ripple and come
Control brightness adjustment；
S5. mobile phone detects the colour temperature of secondary light source, aberration, brightness value by photographic head, and by the numerical value for detecting with before
The numerical value of setting compares, if two groups of numerical value have error, returns S4 and continues adjustment, if two groups of numerical value do not have error, should
Group data preservation.
The system is included based on the brightness of mobile phone, colour temperature and acetes chinensis device, wireless blue tooth receive-transmit system, control LED
Secondary light source luminosity, colour temperature, Difference Control circuit, the LED secondary light source structure design of innovation.Its design is as follows:
（1）Based on the brightness of mobile phone, colour temperature and acetes chinensis device
Photometer configuration parameter how by determined using camera system.LED deviator then can be exported by light-metering module or outside
Test result is obtained.Acquiescence test reflected light.Can installation fitting test incident illumination.Picture is generated shutter, light by Log method
Circle, ISO and scene are recorded.Suspend light-metering using Hold button, temporarily show and measure information.Using correcting button, enter
Enter calibration mode, detect that the deviation between LED group is corrected.
（2）LED control circuit based on STM32
The circuit realiration function is as follows：1）Embedded system 2 based on STM32）Multiple spot Bluetooth communication with mobile phone A PP.3）
Trichroism（RGB）The colour temperature, Difference Control of LED.4）The brilliance control of white light source.
It is embodied as follows：
1）Embedded system minimum system based on STM32
The system include STM32 power circuit design, master chip design, reset circuit design, clock circuit design,
Software download interface design, control interface design.Power circuit design by 7.5 volts of lithium batteries through 78L05 and
LM1117-3.3 voltage stabilizing exports 3.3 volts, provides embedded system power supply.Master chip is realized using STM32F103RBT6 chip, should
Chip has multi-channel A/D, D/A, PWM ripple and serial ports control, is suitable for the control interface type of the circuit.Deposit with 20KFLASH
Storage program, suitable programming size.Reset circuit is designed with RC realization.Clock circuit is designed using 8MHz crystal oscillator dominant frequency,
Clock adopts 32.768KHz, realizes the interface rate of highest frequency 72MHz.Software unloading circuit is realized by RS232 serial ports.
2）As follows with the multiple spot Bluetooth communication implementation of mobile phone A PP：
Control CC2540 node bluetooth module by STM32 embedded system to realize 4.0 protocol networking of bluetooth.In bluetooth 4.0
In network structure, each equipment has the device address of 48, when carrying out networking, from equipment by broadcasting the ground of oneself
Location is sent to main equipment, and main equipment is stored in data structure from device address information by scanning to obtain, and passes through the knot later
The binding of structure body needs the specific from equipment of communication.Unbinding after the completion of communication.One mobile phone is realized to many by bluetooth group
The colour temperature of individual background light source, aberration, brilliance control, it is achieved that the purpose of Web control, while improve the steady of control
Qualitative.
3）Trichroism（RGB）The colour temperature Difference Control of LED
Pass through Bluetooth system first, STM32 system receives the colour temperature of LED of mobile phone A PP requirement, aberration, brightness value,
The LED voltage virtual value required for LED colour temperature, aberration, brightness value according to advance debugging carries out comparison of tabling look-up, Ran Houtong
Cross PWM ripple to export corresponding voltage effective value to ensure colour temperature, Difference Control.According to colour temperature aberration relation each other, first
First ensure color temperature value, then according to the monochromatic LED of impact colour temperature maximum, determine the aberration ratio of other two kinds of colors.
The circuit includes that PWM control voltage is had virtual value and the light on and off by Control entirety and exported using TFT
The status information of control node.
4）The brilliance control of white light source
By the output control of Control white light source, export corresponding voltage effective value in conjunction with PWM ripple to realize brightness tune
Whole.
（3）The LED secondary light source structure design of innovation
Adopting LED light rod structure LED secondary light source on market, the structure can cause the overall uniformity of light source different more,
Consistent colour temperature value of chromatism is difficult to realize in whole plane.Designed by following structure, can significantly improve this
One shortcoming.
Three-dimensional installation led in L-shaped or semicircular sheet material：By taking L-type pipe as an example, it is divided into this 3 row led region.Can
Be respectively mounted 3200K yellow, 5500K white, RGB color, high-power LED paster is used as the different types of led such as flash lamp.
Or annular light source is constituted using 6 or 8 section led groups, 6 or 8 section led groups may also be employed rectangular shaped light source is constituted, also may be used
Strip source is constituted using 6 or 8 section led groups.
By the LED light source structure of different structure, can effectively improve the conforming problem of specific region light source parameters.For adaptive
The secondary light source generator that lights is answered to produce consistent background light source colour temperature, aberration, brightness value and provide structure structure design guarantor
Card.
By the above-mentioned invention with very strong novelty, it is that the bias light Aided Design of modern photography is provided with automatically
Change, the self adaptation secondary light source of intelligent precise control lights generator.
It should be pointed out that above example is only the representative example of the present invention.The present invention can also have many deformation.Every
According to any simple modification, equivalent variations and modification that the essence of the present invention makees above example, all it is considered as belonging to this
The protection domain of invention.
Claims (4)
1. self adaptation secondary light source light generating meanss, it is characterised in that：Including detection control apparatus, LED control circuit and auxiliary
Light source is helped, the detection control apparatus adopts the intelligent terminal with camera function, the detection control apparatus passes through bluetooth mould
Block is carried out data transmission with LED control circuit, and the bluetooth module adopts CC2540 chip, and the detection control apparatus collection is auxiliary
The brightness colour temperature chrominance information of light source is helped to drive adjustment secondary light source in order to LED control circuit；The LED control circuit includes
Power circuit, master chip, reset circuit, clock circuit, software unloading circuit and control interface, the power circuit adopts 7.5V
Lithium battery provides the power supply of whole LED control circuit through 78L05 and LM1117-3.3 voltage stabilizing, and the master chip is using having
The STM32F103RBT6 chip of 20KFLASH storage program, the reset circuit adopts RC reset circuit；The clock circuit is adopted
With 8MHz crystal oscillator dominant frequency, clock adopts 32.768KHz；The software unloading circuit adopts RS232 serial ports；On the master chip also
It is connected with colour temperature, aberration, intednsity circuit and TFT interface；The secondary light source adopts multigroup LED splicing construction.
2. self adaptation secondary light source according to claim 1 light generating meanss, it is characterised in that：The secondary light source bag
L-type sheet material and high-power paster LED is included, the high-power paster LED is separately positioned on two sides of L-type sheet material and connects
The junction of individual side.
3. self adaptation secondary light source according to claim 1 light generating meanss, it is characterised in that：The secondary light source is adopted
LED light rods connected structure side by side is saved with eight sections or the end to end structure of six section LED light rods or using eight sections or six.
4. a kind of control method of self adaptation secondary light source, using mobile phone, LED control circuit, bluetooth module and secondary light source, its
It is characterised by comprising the following steps：
S1. according to different scenes demand, annular secondary light source, L-shaped secondary light source or rectangle secondary light source are selected, and will
LED control circuit is connected with bluetooth module and secondary light source with respectively；
S2. mobile phone is mutually wirelessly connected by bluetooth module with LED control circuit, carries out multi-point；
S3., the colour temperature of needs, aberration, brightness value are set on mobile phone, and LED control circuit is sent to by bluetooth；
S4.LED control circuit is by the LED electricity required for the LED colour temperature of the numerical value for receiving and advance debugging, aberration, brightness value
Being pressed with valid value carries out comparison of tabling look-up, and then exports corresponding voltage effective value by PWM ripple to control colour temperature, aberration, according to color
Warm colour difference relation each other, adjusts color temperature value first, then according to the monochromatic LED of impact colour temperature maximum, adjusts other
The aberration ratio of color；Finally by the output of Control white light source, corresponding voltage effective value is exported in conjunction with PWM ripple and come
Control brightness adjustment；
S5. mobile phone detects the colour temperature of secondary light source, aberration, brightness value by photographic head, and by the numerical value for detecting with before
The numerical value of setting compares, if two groups of numerical value have error, returns S4 and continues adjustment, if two groups of numerical value do not have error, should
Group data preservation.
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| CN201610960639.3A CN106455224B (en) | 2016-10-28 | 2016-10-28 | The adaptively luminous generation device of secondary light source and secondary light source adjusting method |
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| CN201610960639.3A CN106455224B (en) | 2016-10-28 | 2016-10-28 | The adaptively luminous generation device of secondary light source and secondary light source adjusting method |
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| CN114745510A (en) * | 2022-06-13 | 2022-07-12 | 东莞锐视光电科技有限公司 | Automatic LED light source calibration method and system for target image acquisition |
| CN116540293A (en) * | 2023-06-28 | 2023-08-04 | 赛诺威盛科技(北京)股份有限公司 | Method, device and system for testing detector |
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| CN106455224B (en) | 2018-02-02 |
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