CN107919909B - Multichannel metamerism visible light communication method and system - Google Patents
Multichannel metamerism visible light communication method and system Download PDFInfo
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- CN107919909B CN107919909B CN201710934451.6A CN201710934451A CN107919909B CN 107919909 B CN107919909 B CN 107919909B CN 201710934451 A CN201710934451 A CN 201710934451A CN 107919909 B CN107919909 B CN 107919909B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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Abstract
The invention provides a multi-channel metamerism visible light communication method and a related product, wherein communication signals are transmitted through a first group of multispectral channels; the second group of multispectral channels do not carry communication signals, and the light color is adjusted to be presented; the first set of multispectral channels comprises one or more multispectral channels; the second set of multispectral channels includes one or more multispectral channels. The technical scheme provided by the invention has the advantages of solving the problems of stroboscopic and photochromic by multi-channel signal transmission under relatively low-frequency transmission.
Description
Technical Field
The invention relates to the technical field of terminal equipment, in particular to a multi-channel metamerism visible light communication method and a related product.
Background
Visible light communication realizes signal control mainly by controlling the brightness of a light source and respectively corresponding to 0 and 1 signals, and the transmission rate of the visible light communication is faster and faster. In the case of ultrahigh frequency changes, for example, changes tens of thousands of times per second, even millions of times, the human eye cannot sense the changes of light, and signal transmission is realized. On the other hand, if the light source is changed at a relatively low speed, the stroboscopic effect of the light source can be easily observed, and particularly, in signal modulation, the light source is in two extreme states of bright and dark, so that the observation is easier. In practical application, there are many situations where a large amount of information does not need to be transmitted, but only a small amount of information is required, and at this time, relatively low-speed transmission can also meet the requirement.
Disclosure of Invention
The embodiment of the invention provides a channel metamerism visible light communication method and a related product, which can solve the problems of stroboflash and photochromic by multi-channel signal transmission under phase low-frequency transmission.
In a first aspect, an embodiment of the present invention provides a method for communicating visible light in a multi-channel metamerism, where communication signals are transmitted through a first set of multi-spectral channels;
the second group of multispectral channels do not carry communication signals, and the light color is adjusted to be presented;
the first set of multispectral channels comprises one or more multispectral channels;
the second set of multispectral channels includes one or more multispectral channels.
Optionally, the method further includes:
sending a performance control signal through a third set of multi-spectral channels;
the third set of multispectral channels includes one or more multispectral channels.
Optionally, two consecutive homochromatic differences of the first set of multispectral channelsThe variation amplitude between the spectral states conforms to the function fsWhere f (1,2,3, …, n)/t, where f (1,2,3, …, n) is the amplitude of each spectral change between two metameric states and t is time.
Optionally, the adjusting the color of the displayed light by not carrying the communication signal through the second set of multispectral channels includes:
the second group of multispectral channel light-transmitting color synthesis formula is used for adjusting and presenting light color, and the light color synthesis formula comprises:
wherein a is1,a2……anIs a coefficient of1,l2……lnIs the sum of the spectral tristimulus values, x, of each channel1,y1,x2,y2……xn,ynAnd the chromaticity coordinates corresponding to the spectrum of each channel are x and y, and the chromaticity coordinates to be solved are x and y.
In a second aspect, there is provided a multi-channel metamerism visible light communication system,
a channel for transmitting communication signals;
the light color channel is used for not carrying communication signals and adjusting the light color;
the channel comprises one or more multispectral channels;
the photochromic channels include one or more multispectral channels.
Optionally, the method further includes:
a performance control channel for transmitting a performance control signal;
the performance control channel includes one or more multispectral channels.
Optionally, the variation amplitude between two consecutive metameric states of the channel conforms to a function fsWhere f (1,2,3, …, n)/t, where f (1,2,3, …, n) is the amplitude of each spectral change between two metameric states and t is time.
Optionally, the light color channel is adjusted to present light color through a light color synthesis formula, where the light color synthesis formula includes:
wherein a is1,a2……anIs a coefficient of1,l2……lnIs the sum of the spectral tristimulus values, x, of each channel1,y1,x2,y2……xn,ynAnd the chromaticity coordinates corresponding to the spectrum of each channel are x and y, and the chromaticity coordinates to be solved are x and y.
In a third aspect, a computer-readable storage medium is provided, which is characterized by storing a computer program for electronic data exchange, wherein the computer program causes a computer to execute the method provided in the first aspect.
In a fourth aspect, there is provided a computer program product comprising a non-transitory computer readable storage medium having a computer program stored thereon, the computer program being operable to cause a computer to perform the method provided by the first aspect.
The embodiment of the invention has the following beneficial effects:
it can be seen that, according to the technical scheme provided by the embodiment of the invention, the plurality of channels are specially used for carrying signals, and the other channels are specially used for adjusting light color, so that the problem of illumination performance is solved, and meanwhile, the problems of stroboflash and light color are solved by multi-channel signal transmission under phase low-frequency transmission.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a multichannel metamerism visible light communication method according to an embodiment of the present invention.
Fig. 1a is a schematic view of a multi-channel structure provided in an embodiment of the present invention.
Fig. 2 is a schematic diagram of a spectral channel according to an embodiment of the present invention.
FIG. 3 is a schematic view of a light color channel according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of an arrangement of optical channels according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a multi-channel metamerism visible light communication system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of the invention and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1, fig. 1 provides a multi-channel metamerism visible light communication method, as shown in fig. 1, including the following steps:
s101, transmitting a communication signal through a first group of multispectral channels;
step S102, no communication signal is carried through a second group of multispectral channels, and the light color is adjusted to be presented;
the first set of multispectral channels comprises one or more multispectral channels;
the second set of multispectral channels includes one or more multispectral channels.
A schematic diagram of the first set of multispectral channels and the second set of multispectral channels is shown in fig. 2. The light color adjustment schematic is shown in fig. 3.
Optionally, the method further includes:
sending a performance control signal through a third set of multi-spectral channels;
the third set of multispectral channels includes one or more multispectral channels.
The invention comprises multiple channels, see fig. 1a, comprising: the system comprises a visible light source system, a signal carrier system and a signal receiving system.
The multi-channel visible light source system can be any visible light source with adjustable spectrum, such as various types of LEDs, OLEDs, laser LEDs, micro LEDs and the like.
The multi-channel visible light source system is characterized by being composed of a plurality of channels of visible light spectrums, and the spectral intensity of each channel can be changed.
The signal carrier system comprises a signal channel, a performance control channel and a light color control channel.
The signal channel is a channel which controls the component proportion of the spectrum of several channels and carries the signal by the intensity change along with the time. The intensity is changed and controlled by adopting different modes of controlling the spectral current of each channel or regulating the pulse width by PWM and the like.
The signal carrier system has different levels of signal channel intensity for each spectrum, thus representing different signal information and forming a multi-system semaphore. E.g., 0%, 100% intensity, corresponding to a 0, 1 signal. 10%, 20%, … …, 100% correspond to a decimal signal, and so on.
Optionally, the variation amplitude between two consecutive metameric states of the first set of multispectral channels conforms to a function fsWhere f (1,2,3, …, n)/t, where f (1,2,3, …, n) is the amplitude of each spectral change between two metameric states and t is time. The control is under the stroboscopic range which can be identified by human eyes, and the smaller the change amplitude is, the shorter the time is, the less influence is caused.
The performance control channel can reserve different parts of spectrums according to different application occasions, and optimizes different performances such as photobiological performance, blue light damage performance, mesopic vision performance, color rendering performance, light effect performance and the like.
The light color control channel is characterized in that 1 to n channels are used for adjusting light colors.
When the light color control channel adopts 2 channels to adjust light color, the formed color of the signal channel has no special requirement, and the light color can be adjusted to an ideal light color (can be white light in a color temperature range and used for functional illumination, and can also be a designated light color required by a user side); adjustment to the desired color for more than 2 colors increases the corresponding dimension as the channels for adjusting the color increase.
Optionally, the adjusting the color of the displayed light by not carrying the communication signal through the second set of multispectral channels includes:
the second group of multispectral channel light-transmitting color synthesis formula is used for adjusting and presenting light color, and the light color synthesis formula comprises:
wherein a1 and a2 … … an are coefficients, l1 and l2 … … ln are sums of spectrum tristimulus values of each channel, x1, y1, x2, y2 … … xn and yn are chromaticity coordinates corresponding to each channel spectrum, and x and y are chromaticity coordinates to be obtained.
The light color control channel can set the reference light color so that the reference light color can be changed according to the requirement of the reference light color.
In the signal carrier system, after the proportion of each part of the visible spectrum is well controlled (according to the signal carrier in front, the signal spectrum proportion is well determined, the light color channel spectrum is adjusted, the light color is controlled, and meanwhile, the brightness is kept unchanged), the brightness is also kept unchanged through adjustment.
And the photochromic modulation system is provided with a photochromic feedback and compensation system, tests the color and the brightness, and performs feedback and compensation when the photochromic modulation system deviates from the reference value.
The signal receiving system can detect the intensity of each different spectrum, and detect the intensity of the spectrum, so that the spectrum is converted into a corresponding signal value.
The signal receiving system is further characterized in that signal detection can be performed for all of the set multi-channel spectra.
The system is characterized in that the information can be transmitted continuously,
or only certain information quantity can be stored, and after the corresponding control is received, the corresponding information is transmitted according to the time sequence, which is similar to the two-dimensional code effect.
Referring to fig. 5, fig. 5 provides a multi-channel metamerism visible light communication system,
a channel 501 for transmitting communication signals;
a light color channel 502 for adjusting the light color without carrying communication signals;
the channel comprises one or more multispectral channels;
the photochromic channels include one or more multispectral channels.
Fig. 4 shows an arrangement of the signal channel 501, the light color channel 502, and the performance control channel 503.
Optionally, the method further includes:
a performance control channel 503 for sending performance control signals;
the performance control channel includes one or more multispectral channels.
Optionally, the variation amplitude between two consecutive metameric states of the channel conforms to a function fsF (1,2,3, …, n)/t, wherein f (1,2,3, …, n) is two sameThe spectrum change amplitude between the different color spectrum states is t is time.
Optionally, the light color channel is adjusted to present light color through a light color synthesis formula, where the light color synthesis formula includes:
wherein a is1,a2……anIs a coefficient of1,l2……lnIs the sum of the spectral tristimulus values, x, of each channel1,y1,x2,y2……xn,ynAnd the chromaticity coordinates corresponding to the spectrum of each channel are x and y, and the chromaticity coordinates to be solved are x and y.
Embodiments of the present invention also provide a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any one of the multichannel metameric visible light communication methods as recited in the above method embodiments.
Embodiments of the present invention also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any one of the multichannel metameric visible light communication methods as recited in the above method embodiments.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are exemplary embodiments and that the acts and modules illustrated are not necessarily required to practice the invention.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may be implemented in the form of a software program module.
The integrated units, if implemented in the form of software program modules and sold or used as stand-alone products, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a memory and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The above embodiments of the present invention are described in detail, and the principle and the implementation of the present invention are explained by applying specific embodiments, and the above description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (4)
1. A multi-channel metamerism visible light communication method is characterized in that,
transmitting a communication signal through a first set of multispectral channels;
the second group of multispectral channels do not carry communication signals, and the light color is adjusted to be presented;
the first set of multispectral channels comprises one or more multispectral channels;
the second set of multispectral channels comprises one or more multispectral channels;
the variation amplitude between two consecutive metameric states of the first set of multispectral channels conforms to a function fsF (1,2,3, …, n)/t, where f (1,2,3, …, n) is the amplitude of each spectral change between two metameric states, t is time,
adjusting the color of the light present by not carrying communication signals through a second set of multispectral channels, comprising:
the second group of multispectral channel light-transmitting color synthesis formula is used for adjusting and presenting light color, and the light color synthesis formula comprises:
wherein a is1,a2……anIs a coefficient of1,l2……lnIs the sum of the spectral tristimulus values, x, of each channel1,y1,x2,y2……xn,ynAnd the chromaticity coordinates corresponding to the spectrum of each channel are x and y, and the chromaticity coordinates to be solved are x and y.
2. The method of claim 1, further comprising:
sending a performance control signal through a third set of multi-spectral channels;
the third set of multispectral channels includes one or more multispectral channels.
3. A multi-channel metamerism visible light communication system,
a channel for transmitting communication signals;
the light color channel is used for not carrying communication signals and adjusting the light color;
the channel comprises one or more multispectral channels;
the photochromic channels comprise one or more multispectral channels;
the variation amplitude between two consecutive metameric states of the channel conforms to a function fsF (1,2,3, …, n)/t, where f (1,2,3, …, n) is the amplitude of each spectral change between two metameric states, t is time,
the light color channel is adjusted to present light color through a light color synthesis formula, and the light color synthesis formula comprises:
wherein a is1,a2……anIs a coefficient of1,l2……lnIs the sum of the spectral tristimulus values, x, of each channel1,y1,x2,y2……xn,ynAnd the chromaticity coordinates corresponding to the spectrum of each channel are x and y, and the chromaticity coordinates to be solved are x and y.
4. The system of claim 3, further comprising:
a performance control channel for transmitting a performance control signal;
the performance control channel includes one or more multispectral channels.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1536786A (en) * | 2003-04-07 | 2004-10-13 | 索尼株式会社 | Communication system and communication luminous equipment |
| CN101663845A (en) * | 2007-04-23 | 2010-03-03 | 住友化学株式会社 | Illuminating light communication system and transmitting device for illuminating light communication |
| CN105610514A (en) * | 2015-12-31 | 2016-05-25 | 固安翌光科技有限公司 | Visible light communication system of white-light OLED (Organic Light Emitting Diode) device based on quantum dots |
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| KR100866189B1 (en) * | 2007-01-29 | 2008-10-30 | 삼성전자주식회사 | Method and apparatus for correcting imbalance visible light color in wavelength division parallel visible light optical communication |
| CN103650383B (en) * | 2012-05-24 | 2017-04-12 | 松下电器（美国）知识产权公司 | Information communication method |
| EP3257172A4 (en) * | 2015-02-10 | 2018-10-10 | Darabi, Amir | System and method for providing optically coded information |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1536786A (en) * | 2003-04-07 | 2004-10-13 | 索尼株式会社 | Communication system and communication luminous equipment |
| CN101663845A (en) * | 2007-04-23 | 2010-03-03 | 住友化学株式会社 | Illuminating light communication system and transmitting device for illuminating light communication |
| CN105610514A (en) * | 2015-12-31 | 2016-05-25 | 固安翌光科技有限公司 | Visible light communication system of white-light OLED (Organic Light Emitting Diode) device based on quantum dots |
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