CN206790727U - The exhibition illuminating lamp of the multispectral LED light source of high-color rendering, museum exhibits - Google Patents
The exhibition illuminating lamp of the multispectral LED light source of high-color rendering, museum exhibits Download PDFInfo
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Abstract
The utility model provides a kind of multispectral LED light source of high-color rendering, including LED light source chip, light source installation base plate, LED drive module.There are ten several different LED light source chips in the multispectral LED light source of the utility model, there is different spectral wavelengths and spectral bandwidth, the LED drive module is provided with power module, microprocessor module between every kind of LED light source chip, multichannel separation module, Computer Interface Module.The utility model additionally provides the exhibition illuminating lamp of museum exhibits.The utility model not only with high-color rendering but also with historical relic showpiece sensitivity spectrum is avoided the characteristics of, the photooxidation being subject in being avoided that or reduce on show, it can be reached by spectrum independence actuation techniques and multispectral light source test and automatic control system and the accurate of different-waveband light intensity in lighting source is controlled, adapt to the demand of different historical relics, influence of the light source to historical relic can be reduced while ensureing that color rendering properties of light source fully shows historical relic showpiece.
Description
Technical field
A kind of multispectral LED light source of high-color rendering is the utility model is related to, more particularly to is illuminated for light sensitive historical relic
The multispectral lighting sources of LED, and museum exhibits arrange exhibits and means of illumination.
Light source is referred to as colour rendering to the coloration ability of object, is by under the reference with same colour temperature or reference light source outside object
See the comparison of color.Spectral content that light is launched determines the photochromic of light source, but it is same it is photochromic can by it is many, a small number of even only
Two monochromatic light wave compositions, also differ widely to the colour rendering of each color.Identical photochromic light source has different spectrum
Composition, the wider light source of spectral composition are likely to provide preferably colour developing quality.When seldom in light source light spectrum or shortage object exists
During the main ripple reflected under reference light source, color can be made to produce obvious aberration.Aberration degree is bigger, colour developing of the light source to the color
Property is poorer.Colour rendering index is the current common method for defining color rendering properties of light source evaluation.
Colour rendering index can refer to International Commission on Illumination（CIE）Scientific definition, GBT23863 lighting design for museum rule
Provided in model：The high place of color requirement is distinguished in display drawing, coloured fabrics and other polychrome showpieces etc., light source typically colour developing refers to
Number not lower than 90.To distinguishing the less demanding place of color, light source general colour rendering index is not lower than 80.Therefore so-called high colour developing refers to
Number refers generally to colour rendering index more than 90.
Background technology
Museum is the important place of protection and displaying culture and natural heritage, development social education.Wherein, luminous environment is
Weigh one of the important technology in museum：Designer must should meet the good visual environment needed for spectators, make exhibition again
Product avoid being damaged by light radiation.This Lighting Design to museum proposes very high requirement.
In the planning and design of Museum Lighting Environment, the selection for lighting source is most important link.Current
In Lighting Design, in addition to natural lighting, used artificial light light source is mainly fluorescent lamp（Fluorescent lamp）, electricity-saving lamp, halogen
Plain lamp etc., in recent years as lighting LED light source technology accelerated development, LED step into museum lighting.Above-mentioned light source
Different spectral characteristics is formed because its principle of luminosity is different.
Natural lighting, fluorescent lamp（Fluorescent lamp）, electricity-saving lamp be normally only used for exhibition room lighting source, Halogen lamp LED illumination is the most
Common Cultural relics in museum illumination.
Natural lighting is by taking D65 light sources as an example, and D65 light sources are that 6500K restructuring daylight is a kind of wide spectrum light source, containing a large amount of
UV-shares, therefore, in the Lighting Design of natural lighting, the filtering apparatus of filtering ultraviolet light need to be increased.Halogen light source
Correlated colour temperature typically in 3000K or so.Because the fragile historical relic of most of light sensitives is had a great influence by shortwave radiation, and
Halogen lamp LED shortwave energy is weaker, while extraordinary colour rendering index, but the spectral energy of Halogen lamp LED is concentrated mainly on infrared waves
Section, its infrared emanation brought do not utilize cultural relic conservation.Nevertheless, Halogen lamp LED is also current most suitable museum exhibits
Lighting source, largely used by museum, be the most commonly seen artificial light light source to historical relic showpiece.
In Cultural relics in museum illumination, the light aging problem of fragile historical relic is considered, such as organic matter historical relic, illumination
Influence just clearly.Wherein ultraviolet and influence of the infrared band to historical relic has been it is well known that ultraviolet easily accelerate historical relic
Aging, infrared transmission heat, therefore decrease up to the main consideration factor for preventing that ultraviolet and infrared spectrum is lighting source selection；
In the range of visible light wave range, some conventional researchs are also to the optics fade properties of some dyes of paper, silk etc.
It is tested analysis, such as indigo plant of the sophora bud dyestuff to 450nm-500nm on the madder and real silk fabric on silk fabric
Green light band is more sensitive, and the halogen light source with more long wave content has obvious influence for indigo naturalis, and to Chinese scholartree
Rice influences smaller.
Although correlative study gives the spectrum sensitive wave band of historical relic, currently used lighting source can not be directed to
The historical relic of specific materials, preferable illuminating effect and color rendering properties of light source can be reached to meet that Cultural relics in museum puts on display demand, again
The light aging of fragile historical relic can be reduced, reaches the purpose of protection historical relic.
Such as the LED light source of conventional RGB mixed lights, although its adjustable feux rouges, green glow, output energy of blue light,
A kind of excessive reduction of composition can cause colour rendering index to be greatly reduced in RGB, have a strong impact on exhibition effect.Moreover, RGB-LED light
Source is unfavorable to historical relic's protection in ultraviolet and infrared also portion of energy output in itself；The colour rendering index one of RGB-LED light sources in itself
As below 80, it is impossible to meet the lighting demand of historical relic color rendition；RGB-LED can not also fit the light sources such as similar Halogen lamp LED
Spectrum types, it is difficult to for adjusting spectral characteristic during different type historical relic.
Therefore, current LED light source be still unable to replacing halogen lamp as historical relic illumination and can only be as the daily of exhibition room
Illumination, for different historical relics, there has been no take into account historical relic's protection and put on display the exhibition illuminating lamp of demand so far.
Utility model content
Technical problem to be solved in the utility model is to be based on historical relic light characteristics, for the fragile historical relic of light sensitive
A kind of illumination, there is provided multispectral LED light source of high-color rendering.Therefore, the utility model uses following technical scheme：
The multispectral LED light source of high-color rendering, it is characterised in that it includes LED light source chip, light source installation base plate, LED and driven
Dynamic model block；
There are ten several different LED light source chips in the multispectral LED light source, have between every kind of LED light source chip
Different spectral wavelengths and spectral bandwidth, the spectral dispersion of ten several different LED light source chips is from 380nm-780nm's
In visible spectrum wave-length coverage, the quantity of every kind of LED light source chip is one or more, and narrower spectral bandwidth is 10nm-30nm
Between, in 430nm to 690nm spectral region, the LED light source chip peak wavelength difference of two kinds of adjacent wavelength is no more than
50nm；
LED light source chip of the multispectral LED light source medium wavelength more than or equal to 610nm and less than 690nm is exported
Spectral energy is not less than the spectral energy that LED light source chip of the wavelength less than 600nm is exported；
The multispectral LED light source is without ultraviolet and infrared spectrum composition；
The relative spectral power distributions of the multispectral LED light source have the peak value more than more than 3；
According to the spectral characteristic of lighting object, the spectral energy of at least more than a kind light source chip output is multispectral LED
Less than the 20% of the peak value spectral energy of light source；
The light source installation base plate is used to install LED light source chip, and substrate outer edge has described ten several different LED lights
The pin interfaces of source chip；
The LED drive module is provided with power module, microprocessor module, multichannel separation module, Computer Interface Module；
The pin interfaces are connected with multichannel separation module respectively；
The microprocessor module and multichannel separation module and Computer Interface Module are powered by power module；Micro- place
Reason device module is connected with power module, multichannel separation module, Computer Interface Module；The Computer Interface Module and described micro-
Processor module is connected, and is the multispectral LED light source of PC control by wired or wirelessly and upper machine communication
Spectral energy provides intelligence interface；
The LED drive module is controlled using microprocessor module as core by the microprocessor module, to the power supply
Module uses the multichannel separation module, isolates the self-powered circuit for coordinating ten several different LED light source chips,
The self-powered circuit is for each paths of LEDs individually adjusts driving force and does not influence other paths of LEDs simultaneously.
On the basis of using above-mentioned technical proposal, the utility model can also use technical scheme or right further below
These further solution pools use：
The multichannel separation module is controlled by the microprocessor module, and the microprocessor module is several according to described ten
The species output multi-channel control signal of LED light source chip, the way of the multi-way control signals and ten several LED light source cores
The species number of piece is identical, output signal PWM（Pulsewidth modulation）Signal, by the multi-way control signals per control signal all the way
Duty cycle adjustment each LED light source chip output energy.
The LED light source chip can also be with common red, green, blue and white（RGBW）The combination of wide spectrum LED light source forms hybrid
LED light source；The common red, green, blue and white（RGBW）The LED light source band of feux rouges, green glow, blue light in wide spectrum LED light source
A width of more than 100nm, white light wide spectrum LED excite yellow fluorescent powder to be formed by blue light LED light source.
The spectral dispersion of ten several different LED light source chips is in the visible spectrum wavelength model from 430nm-690nm
In enclosing.
Containing 12 kinds of different LED light source chips, the wavelength of described 12 kinds different LED light source chips is respectively：
Isosorbide-5-Nitrae 30nm；2,454nm：3,470nm；4,490nm；5,505nm；6,523nm；7,555nm；8,585nm；9,595nm；10,
620nm；11,630nm；12,660nm；Their spectral bandwidth is 10-30nm.
The lead of ten several LED light source chips on the installation base plate can use completely self-contained gage system,
The gage system of common anode or common cathode can be used.
When the maximum spectral energy of each LED light source isP n , adjusted by microprocessor module output control signal every
A kind of spectral intensity of LED light source, its gain coefficient areK n , now the relative spectral power distributions of multispectral LED light source be。
The multichannel separation module is made up of LED drive chip and peripheral circuit；LED drive circuit input voltage range
For 6-36V, there is decompression constant current driving, PWM light modulations, Internal current limit, tremble the function such as frequently.
Another technical problem to be solved of the utility model is to be based on historical relic light characteristics, for the crisp of light sensitive
A kind of weak historical relic illumination, there is provided the historical relic's protection light of museum exhibits.Therefore, the utility model uses following technical scheme：
The historical relic's protection light source of museum exhibits, it is characterised in that it is multispectral using any one above-mentioned high-color rendering
LED light source.
Due to using the technical solution of the utility model, the multispectral LED light source of high-color rendering provided by the utility model
Not only with high-color rendering but also with historical relic showpiece sensitivity spectrum is avoided the characteristics of, it is subject in being avoided that or reduce on show
Photooxidation.Moreover, the multispectral LED light source of high-color rendering provided by the utility model support spectrum independence actuation techniques and
Multispectral light source is tested and automatic control system, can test and automatically control by spectrum independence actuation techniques and multispectral light source
System reaches the accurate demand for controlling, adapting to different historical relics to different-waveband light intensity in lighting source so that using this practicality
The museum exhibits of new exhibition illuminating lamp being arranged exhibits and illuminating, only need to be according to inhomogeneity to each showcase in Practical Project
The optical characteristics of historical relic, energy is exported to reduce the sensitive band in light source by separately adjustable each spectral energy, without picture
Traditional RGB-LED light sources can influence colour rendering index like that, it is special can also set specific LED light spectrum according to historical relic spectral characteristic
Property.In a word, influence of the light source to historical relic can be reduced while ensureing that color rendering properties of light source fully shows historical relic showpiece.
Brief description of the drawings
Fig. 1 is the block diagram of the multispectral LED light source of the utility model high-color rendering.
Fig. 2 is relative luminous efficiency curve map.
Fig. 3 is brightness adjustment control schematic diagram of the utility model based on PWM.
Fig. 4 is the multichannel separation module circuit diagram of multispectral LED light source.
Fig. 5 is multispectral light source test and automatic control system block diagram.
Fig. 6 is the schematic diagram of the utility model light source installation base plate.
The spectrogram for the 2700K Halogen lamp LEDs that Fig. 7-1 is simulated by the multispectral LED light source of the utility model.
The spectrogram for the 2856K Halogen lamp LEDs that Fig. 7-2 is simulated by the multispectral LED light source of the utility model.
The spectrogram for the 3000K Halogen lamp LEDs that Fig. 7-3 is simulated by the multispectral LED light source of the utility model.
The spectrogram for the 3500K Halogen lamp LEDs that Fig. 7-4 is simulated by the multispectral LED light source of the utility model.
Fig. 8 is the spectrogram with the multispectral LED light source of the utility model for subtracting blue light spectral property.
Embodiment
Referring to the drawings.The multispectral LED light source of high-color rendering provided by the utility model includes LED light source chip, light source
Installation base plate, LED drive module.
Ten several different LED light source chips are provided with the utility model, has between every kind of LED light source chip and does not share the same light
Spectrum wavelength and spectral bandwidth, the quantity of every kind of LED light source chip is one or more.The spectral dispersion of ten several LED exists
Out of, 380nm-780nm limit of visible spectrum, every kind of LED narrower bandwidth is between 10nm-30nm.The section of visible wavelength
Be defined as 380nm-780nm, and whole visible light wave range is 400nm；It is but bent according to the relative luminous efficiency of human eye
Line such as Fig. 2, for the shortwave less than 430nm and the long wave more than 690nm, the relative spectral sensitivity of human eye is less than peak value
1%, therefore view-based access control model characteristic, in LED light source making, hair can be improved using the LED of 430nm-690nm wave band as far as possible
Light efficiency, above-mentioned wavelength band are 260nm., can be relatively more equal using the LED of ten several narrow bandwidths with a width of 10nm-30nm
Above-mentioned wave band is distributed in evenly.It is to ensure spectral energy can not occur relatively in 430nm to 690nm spectral region simultaneously
Low wave band, the LED peak wavelengths difference of two kinds of adjacent wavelength are no more than 50nm.
In museum lighting, Halogen lamp LED has been accepted as a kind of more suitable historical relic lighting source extensively.Halogen
The spectral characteristic of lamp is shown as in visible light wave range, is gradually strengthened by the spectral energy of shortwave to long wave.It is and of the present utility model
Multispectral LED light source can adjust spectral energy and be allowed to spectral power distribution and level off to Halogen lamp LED as historical relic lighting source, this
It can export the long wave energy in multispectral LED light source defeated higher than shortwave energy by adjusting the drive circuit of each road independence
Go out, while view-based access control model characteristic, 610nm human eye relative spectral sensitivity is 50% or so of peak value, therefore described ten several
LED light source medium wavelength is more than or equal to the spectral energy that 610nm and the LED light source less than 690nm are exported and is less than not less than wavelength
The spectral energy that 600nm LED light source is exported, and on this basis, the light source is without ultraviolet and infrared spectrum composition.
Museum needs good visual environment, the colour rendering index of wherein light source be influence one of visual environment it is important
Parameter, according to lighting design for museum specification, the place higher for distinguishing color requirement, light source colour rendering index should be not less than 90.
The evaluation and computation methods for light source colour rendering index are proved, light source can effectively be improved by improving the spectral energy of some wave bands
Colour rendering.Due to current RGB-LED（Three peak values）Colour rendering can not reach 90 requirement, therefore to improve light source colour developing
Index, the relative spectral power distributions of the multispectral LED light source have the peak value more than more than 3, realize high-color rendering.
It is several described ten necessarily with certain sensitivity spectrum wave band, therefore in historical relic illumination no matter which kind of historical relic
In the LED light source of different spectral wavelengths and spectral bandwidth, for the sensitivity spectrum wave band of historical relic, at least more than a kind light source core
The spectral energy of piece output is less than the 20% of the peak value spectral energy of multispectral LED light source.So can be quick by reducing historical relic
Feel the energy output of spectral band, reach the purpose of historical relic light radiation protection.
The light source installation base plate is used to install LED light source chip, and substrate outer edge has described ten several different LED lights
The pin interfaces of source chip.
Historical relic illumination advantage based on above-mentioned multispectral LED light source, the driving and control system for improving its light source have weight
The Research Significance wanted.Multispectral LED light source is different with traditional museum lighting light source and common LED light source, has ten several ripples
The long independent driving of combination and needs；Simultaneously as historical relic optical characteristics varies, therefore the control of multispectral LED light source is most
The optical characteristics of different historical relics is adapted to well, and setting has historical relic targetedly spectral illumination light source.
The LED drive module is provided with power module, microprocessor module, multichannel separation module, Computer Interface Module.
The pin interfaces are connected with multichannel separation module respectively.
The microprocessor module and multichannel separation module and Computer Interface Module are powered by power module；Micro- place
Reason device module is connected with light source module, multichannel separation module, Computer Interface Module；The Computer Interface Module and described micro-
Processor module is connected, and is the multispectral LED light source of PC control by wired or wirelessly and upper machine communication
Spectral energy provides intelligence interface.
The multichannel separation module is controlled by the microprocessor module, and the microprocessor module is several according to described ten
The species output multi-channel control signal of LED light source chip, the way of the multi-way control signals and ten several LED light source cores
The species number of piece is identical, output signal PWM（Pulsewidth modulation）Signal, by the multi-way control signals per control signal all the way
Duty cycle adjustment each LED light source chip output energy.
The LED drive module is controlled using microprocessor module as core by the microprocessor module, to the power supply
Module uses the multichannel separation module, isolates the self-powered circuit for coordinating ten several different LED light source chips,
The self-powered circuit is for each paths of LEDs individually adjusts driving force and does not influence other paths of LEDs simultaneously.
The control technology driven using branch has the shortcomings that volume is big, complex circuit.The multispectral LED light source of high-color rendering
Mainly it is made up of the more different LED chips of wavelength, the utility model uses multichannel separation module in LED driving designs,
It uses the parallel current constant control of LED multi-path, using multiple constant current control chip as drive circuit core, passes through control circuit
The time of pwm signal, control LED drive chip normal work and shut-off is produced, so as to adjust the average electricity for flowing through LED chip
Stream, reaches the effect of the regulation spectrum of LED, correlated colour temperature, colour rendering index and luminous flux, and solves that volume is big, circuit is multiple
The problems such as miscellaneous.
Control circuit is from microprocessor as control chip, generation multi-channel PWM control signal, and every road pwm signal
Dutycycle Independent adjustable.So as to realize the turn-on and turn-off time for the LED chip for adjusting every kind of wavelength.Therefore, LED drive module
In, the multichannel separation module is made up of LED drive chip and peripheral circuit.LED drive chip is inputted using Width funtion, is driven
Dynamic circuit input voltage scope be 6-36V, has decompression constant current driving, PWM light modulations, Internal current limit, trembles the function such as frequently.
Fig. 4 is the multichannel separation module circuit diagram of multispectral LED light source.The circuit is using Texas Instruments' production
Core devices of the LED power driving chip TPS61196 as circuit.TPS61196 is a current mode boost controller, energy
Enough drive the lamp string being composed in series by multiple LED.Each lamp string has a separate current voltage-stablizer, and this voltage-stablizer provides
Adjustable LED electric currents in the range of 50mA to 400mA.It can automatically adjust the output voltage of boost pressure controller only to provide
Voltage needed for LED lamp strings, i.e., positive maximum pressure drop play plus the required minimum voltage on the IFB pins of that lamp string
The LED string of parallel connection is played a protective role.
TPS61196 chips have the linear voltage regulator built in one, and the voltage-stablizer is electric by the input by chip VIN pins
Pressure drop is depressed into the VDD needed for chip operation, is powered for internal circuit.To ensure that chip can obtain stable operating voltage, VDD
The external C4 capacitor of pin.Simultaneously to reduce influence of the input voltage fluctuation to chip, placed in pin VIN inputs
Capacitor C1, C2, C3.Most of power supply chip has a function of under-voltage protection, and TPS61196 is no exception.The circuit passes through
Resistor R1, R2 and R3 partial pressure provide input voltage signal to the ULVO pins of chip, judge whether input voltage is full for chip
Sufficient under-voltage protection condition, and then play the function of under-voltage protection.To prevent signal interference shunt capacitor between R2 and ground
C13.When under-voltage protection function when not in use, VDD pins can be connected to by resistance R23.Enable pins of the EN as chip, lead to
Cross resistor R4, R5 and obtain high level enable signal.Resistor R7 is mainly to prevent EN pins from flowing into excessive current, capacitor
C5 is to prevent peak voltage from damaging EN pins.The FAULT pins of chip are chip non-normal working signal output pin.When
The pin exports low level during chip normal work, exports high level during non-normal working.Without can be connected during the function by R6
VDD is connected to, or makes pin hanging.The ISET pins of chip and 6 PWM pins are the pin that chip adjusts output current.Pass through
Resistor R16 connection ISET pins set the maximum output current per all the way, i.e., output current when pwm signal is 100%.
External PWM signal is received by PWM pins, to adjust per output current all the way, and then to the electric current control of LED string
System.GDRV pins connect the gate pole of metal-oxide-semiconductor, control the conducting and shut-off of metal-oxide-semiconductor.ISNS and PGND pins are examined by resistance R9
Flow measurement crosses the electric current of metal-oxide-semiconductor, and the shut-off for chip controls metal-oxide-semiconductor provides input signal.R8 and C6 has been mainly protection here
And stabilization.Chip OVP pins R11 detection output voltages, play overvoltage protection by resistance R10.Chip by
The switching frequency of the conversion of FSW pin outer meeting resistances R13 setting chips.The REF pins of chip are connected to by electric capacity C11, are come
The soft-start time of chip is set.The RC network of resistance R12 and electric capacity C9, C10 composition is mainly the compensation net to chip internal
Network plays stabilization, is connected on COMP pins.Pin IFBV is common by resistance R14 and the R16 being connected with ISET pins
The minimum voltage for setting sink current is set with meeting different LED currents.Electric capacity C12, which rises, in circuit prevents interference effect.Core
IFB1 to the IFB6 of piece is the negative pole incoming end of each LED string.To prevent that it is broken that LED string open circuit or short circuit from producing to chip
Bad, each IFB pins are required for being connected to ground by a resistance.What R17 to the R22 in figure served is exactly this.Due to
TPS61196 uses the 28 pin HTSSOP with PowerPAD to encapsulate.To ensure the excellent heat dispersion performance of chip, PAD pipes
Pin need to be connected to ground by pad.
When each work period starts, chip GDRV pin output signals, metal-oxide-semiconductor Q1 is promoted to turn it on, it is now electric
Feel L1, metal-oxide-semiconductor Q1, resistance R9 form loop, and L1 starts energy storage, diode D1 cut-offs, and LED string provides energy by output capacitance C7
Amount.When chip checked by resistance R9 both end voltages flow through metal-oxide-semiconductor electric current it is too high when, chip is closed by GDRV pins
Metal-oxide-semiconductor.Now diode D1 is turned on, and inductance L1 starts to charge to C7, and is LED statements based on collusion energy.C7 is as energy storage member herein
Part, and C8 electric capacity mainly strobes.
For ten several LED light source chips, the above-mentioned multichannel separation modular circuit in 2 to 4 tunnels can be used to complete multispectral LED
The driving of light source.
For multispectral LED light source, the LED light source chip can also be with common red, green, blue and white（RGBW）Wide spectrum LED
Combination of light sources forms hybrid-type LED light source；The common red, green, blue and white（RGBW）Feux rouges, green glow, indigo plant in wide spectrum LED light source
The LED light source spectral bandwidth of light is more than 100nm, and white light wide spectrum LED excites yellow fluorescent powder to be formed by blue light LED light source.
Ten several spectral characteristics of multispectral LED light source can be determined by the LED light source chip of following 12 kinds of wavelength：
12 kinds of wavelength are respectively：Isosorbide-5-Nitrae 30nm；2,454nm：3,470nm；4,490nm；5,505nm；6,523nm；7,
555nm；8,585nm；9,595nm；10,620nm；11,630nm；12,660nm；Their spectral bandwidth is 10-30nm.
Making for multispectral LED light source, its gage system are as follows：Ten several LED light sources on the installation base plate
The lead of chip can use completely self-contained gage system, can also use the gage system of common anode or common cathode.
Traditional museum lighting control system, uncontrollable for conventional fluorescent lamps illumination, showcase is illuminated with Halogen lamp LED
Intensity of illumination control can be realized, but traditional museum lighting lacks the luminous environment sensor of long term monitoring, therefore natural science
The brightness adjustment control in shop is not carried out mostly, more without the Lighting Control Assembly for historical relic spectral energy.Meanwhile wireless senser
Network technology make it that large-scale luminous environment monitors, and State Cultural Relics Bureau is just in a planned way promoting cultural relics in the collection of cultural institution and preserved
Environmental monitoring system, with reference to Sensor Network/technology of Internet of things, based on luminous environment sensor network, fusion infrared acquisition, image
The multi-sensor technologies such as tracking, RFID merge, with reference to the controllable historical relic's protection illumination of spectrum of the present utility model
Light source, whole monitoring and control can be carried out to Museum Lighting Environment, reach historical relic preservation of the optical environment with opening up old visual effect
Balance.The spectral energy method of adjustment of wherein multispectral LED light source illuminates for light sensitive historical relic difference sensitive band
Demand.
The spectrum adjusting method of multispectral LED light source is as follows：When the maximum spectral energy of each LED light source isP n , lead to
The spectral intensity that microprocessor module output control signal adjusts each LED light source is crossed, its gain coefficient isK n , now LED
The relative spectral power distributions of light source are。
In view of multispectral LED light source can be exported with the spectral energy of independent control different wave length, thus it is specific for certain
Spectrum types such as Halogen lamp LED spectrum, the utility model provide multispectral LED light source fast testing system and enter line light source performance
Detection and evaluation.
Fig. 5 is multispectral light source test and automatic control system block diagram.The test and automatic control system are mainly by integrating
Ball, spectrometer and computer composition.During measurement, multispectral LED light source is placed in integrating sphere, its spectral signal is transmitted by optical fiber
To spectrometer, spectrometer carries out spectral measurement and analysis under the control of the computer.The spectral signal surveyed is multispectral LED light source
Relative spectral power distributions.The computer intelligence interface that LED drive module is passed through according to target optical spectrum Energy distribution, computer
Change the spectral energy of sensitive band, after the light source light spectrum power distribution after to adjustment measures, can calculate current
Correlated color temperature of light source.According to CIE1976 light source aberration computation models, pass through the related colour of successive approximation method calculating current light source
Temperature, and the color coordinates of target colour temperature and the aberration of current light source color coordinates are calculated, obtain the aberration DE and color of light source
The parameter as further adjustment spectral energy is pointed to, while by referring to chromaticity coordinate meter to 14 kinds involved by colour rendering index
Calculate the general colour rendering index and special colour rendering index of current light source.
By taking a kind of multispectral LED light source as an example, 12 kinds narrow spectrum LED light source chip, type are selected in limit of visible spectrum
Number it is 3528, their spectral bandwidth about 20nm, wavelength is：Isosorbide-5-Nitrae 30nm；2,454nm：3,470nm；4,490nm；5,
505nm；6,523nm；7,555nm；8,585nm；9,595nm；10,620nm；11,630nm；12,660nm；Totally ten two kinds
Spectrum.16mm ' 14mm aluminium bases are designed, each spectrum LED chip is encapsulated on aluminium base, and every kind of LED chip has independent
Pin, and controlled by outside constant-current supply system.Operating current 200mA, maximum output general power about 6W, total light flux 500 flow
It is bright., can be with using the spectrum adjusting method of multispectral LED light source based on foregoing multispectral LED light source fast testing system
Using the halogen light spectral property of different-colour as target light source spectrum, that realizes various colour temperatures simulates the multispectral of Halogen lamp LED spectrum
LED light source such as Fig. 7-1,7-2,7-3,7-4 spectrum test data, its colour rendering index Ra is 95 or so, and without ultraviolet and infrared
Composition, illuminated suitable for Cultural relics in museum.Fig. 7-1,7-2,7-3,7-4 are respectively with 2700K, 2856K, 3000K, 3500K halogen
Plain light spectrum is target light source spectrum, passes through the light source light spectrum for simulating Halogen lamp LED for adjusting and controlling multispectral LED light source to realize
Test result.Using the spectrum adjusting method of multispectral LED light source, its colour rendering index Ra is 95 or so, and without ultraviolet and infrared
Composition, and can be according to the spectrum sensitive wave band of different historical relics, for the historical relic of specific materials, to adjust the spectrum of light source point
Cloth, so as to reach preferable illuminating effect and color rendering properties of light source to meet that Cultural relics in museum puts on display demand, and can reduces fragile text
The light aging of thing, reach the purpose of protection historical relic.
For most historical relics it is radiosensitive to short wavelength light the characteristics of, can also be exported by reducing blue spectrum energy, it is real
Now there is the multispectral LED light source for subtracting blue light spectral property, as shown in Figure 8.
Specific embodiment of the utility model is the foregoing is only, but architectural feature of the present utility model is not limited to
This, any those skilled in the art in field of the present utility model, all cover in this practicality newly by the change or modification made
Among the protection domain of type.
Claims (9)
1. the multispectral LED light source of high-color rendering, it is characterised in that it includes LED light source chip, light source installation base plate, LED drivings
Module；
Have ten several different LED light source chips in LED light source in the multispectral LED light source, every kind of LED light source chip it
Between there is different spectral wavelengths and spectral bandwidth, the spectral dispersions of ten several different LED light source chips is from 380nm-
In 780nm visible spectrum wave-length coverage, the quantity of every kind of LED light source chip is one or more, and spectral bandwidth is narrower to be
Between 10nm-30nm, in 430nm to 690nm spectral region, the LED light source chip peak wavelength of two kinds of adjacent wavelength is poor
No more than 50nm；
The multispectral LED light source medium wavelength is more than or equal to the spectrum that 610nm and the LED light source chip less than 690nm are exported
Energy is not less than the spectral energy that LED light source chip of the wavelength less than 600nm is exported；
The multispectral LED light source is without ultraviolet and infrared spectrum composition；
The relative spectral power distributions of the multispectral LED light source have the peak value more than more than 3；
According to the spectral characteristic of lighting object, the spectral energy of at least more than a kind light source chip output is multispectral LED light source
Peak value spectral energy less than 20%；
The light source installation base plate is used to install LED light source chip, and substrate outer edge has described ten several different LED light source cores
The pin interfaces of piece；
The LED drive module is provided with power module, microprocessor module, multichannel separation module, Computer Interface Module；
The pin interfaces are connected with multichannel separation module respectively；
The microprocessor module and multichannel separation module and Computer Interface Module are powered by power module；The microprocessor
Module is connected with power module, multichannel separation module, Computer Interface Module；The Computer Interface Module and the microprocessor
Device module is connected, and is the spectrum of the multispectral LED light source of PC control by wired or wirelessly and upper machine communication
Energy provides intelligence interface；
The LED drive module is controlled using microprocessor module as core by the microprocessor module, to the power module
Using the multichannel separation module, the self-powered circuit for coordinating ten several different LED light source chips is isolated, it is described
Self-powered circuit is for each paths of LEDs individually adjusts driving force and does not influence other paths of LEDs simultaneously.
2. the multispectral LED light source of high-color rendering as claimed in claim 1, it is characterised in that the multichannel separation module is by described
Microprocessor module controls, and the microprocessor module controls according to the species output multi-channel of described ten several LED light source chips
Signal, the way of the multi-way control signals is identical with the species number of described ten several LED light source chips, output signal PWM
(pulsewidth modulation) signal, by the multi-way control signals per each LED light source core of the duty cycle adjustment of control signal all the way
The output energy of piece.
3. the multispectral LED light source of high-color rendering as claimed in claim 1, it is characterised in that the LED light source chip can be with
Combined with common red, green, blue and white (RGBW) wide spectrum LED light source and form hybrid-type LED light source；The common red, green, blue and white
(RGBW) feux rouges, green glow, the LED light source spectral bandwidth of blue light are more than 100nm, white light wide spectrum LED in wide spectrum LED light source
Yellow fluorescent powder is excited to be formed by blue light LED light source.
4. the multispectral LED light source of high-color rendering as claimed in claim 1, it is characterised in that ten several different LED lights
The spectral dispersion of source chip is in the visible spectrum wave-length coverage from 430nm-690nm.
5. the multispectral LED light source of high-color rendering as claimed in claim 1, it is characterised in that contain 12 kinds of different LED lights
Source chip, the wavelength of described 12 kinds different LED light source chips are respectively：Isosorbide-5-Nitrae 30nm；2,454nm：3,470nm；4,
490nm；5,505nm；6,523nm；7,555nm；8,585nm；9,595nm；10,620nm；11,630nm；12,660nm；They
Spectral bandwidth be 10-30nm.
6. the multispectral LED light source of high-color rendering as claimed in claim 1, it is characterised in that ten on the installation base plate are several
The lead of LED light source chip can use completely self-contained gage system, can also use the gage system of common anode or common cathode.
7. the multispectral LED light source of high-color rendering as claimed in claim 1, it is characterised in that when the maximum of each LED light source
Spectral energy is Pn, the spectral intensity of each LED light source, its gain system are adjusted by microprocessor module output control signal
Number is Kn, now the relative spectral power distributions of multispectral LED light source are P=∑s Pn·Kn。
8. the multispectral LED light source of high-color rendering as claimed in claim 1, it is characterised in that the multichannel separation module is by LED
Driving chip and peripheral circuit are formed；LED drive circuit input voltage range is 6-36V, has decompression constant current driving, PWM
Light modulation, Internal current limit, tremble the functions such as frequency.
9. the exhibition illuminating lamp of museum exhibits, it is characterised in that it is using appointing described in claim 1,2,3,4,5,6,7 or 8
Anticipate a kind of multispectral LED light source of high-color rendering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720008954.6U CN206790727U (en) | 2017-01-05 | 2017-01-05 | The exhibition illuminating lamp of the multispectral LED light source of high-color rendering, museum exhibits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720008954.6U CN206790727U (en) | 2017-01-05 | 2017-01-05 | The exhibition illuminating lamp of the multispectral LED light source of high-color rendering, museum exhibits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206790727U true CN206790727U (en) | 2017-12-22 |
Family
ID=60703664
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720008954.6U Withdrawn - After Issue CN206790727U (en) | 2017-01-05 | 2017-01-05 | The exhibition illuminating lamp of the multispectral LED light source of high-color rendering, museum exhibits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206790727U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793326A (en) * | 2017-01-05 | 2017-05-31 | 叶新怡 | The multispectral LED light source of high-color rendering, the exhibition illuminating lamp of museum exhibits and arrange exhibits and means of illumination |
| CN110049595A (en) * | 2019-04-24 | 2019-07-23 | 金松山 | LED industrial lighting wired remote intelligent multi-channel dimming controlling method |
| CN111063311A (en) * | 2020-01-17 | 2020-04-24 | 京东方科技集团股份有限公司 | Boost circuit, backlight drive circuit and display panel |
-
2017
- 2017-01-05 CN CN201720008954.6U patent/CN206790727U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793326A (en) * | 2017-01-05 | 2017-05-31 | 叶新怡 | The multispectral LED light source of high-color rendering, the exhibition illuminating lamp of museum exhibits and arrange exhibits and means of illumination |
| CN106793326B (en) * | 2017-01-05 | 2018-09-21 | 叶新怡 | The multispectral LED light source of high-color rendering, museum exhibits exhibition headlamp and arrange exhibits and means of illumination |
| CN110049595A (en) * | 2019-04-24 | 2019-07-23 | 金松山 | LED industrial lighting wired remote intelligent multi-channel dimming controlling method |
| CN110049595B (en) * | 2019-04-24 | 2022-05-24 | 金松山 | Wired remote intelligent multi-channel dimming control method for LED industrial illumination |
| CN111063311A (en) * | 2020-01-17 | 2020-04-24 | 京东方科技集团股份有限公司 | Boost circuit, backlight drive circuit and display panel |
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