CN110557871A - Office light environment regulation and control system and regulation and control method based on natural lighting - Google Patents

Office light environment regulation and control system and regulation and control method based on natural lighting Download PDF

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Publication number
CN110557871A
CN110557871A CN201910944520.0A CN201910944520A CN110557871A CN 110557871 A CN110557871 A CN 110557871A CN 201910944520 A CN201910944520 A CN 201910944520A CN 110557871 A CN110557871 A CN 110557871A
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light
color temperature
illumination
color
indoor
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CN110557871B (en
Inventor
朱立军
张宇笛
陈亮
谷振寰
石岩
金尚忠
杨凯
徐睿
周明明
常彦琴
姜琰飞
朱文锋
吴伟丹
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Ningbo Liaoyuan Lighting Group Co Ltd
China University of Metrology
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Ningbo Liaoyuan Lighting Group Co Ltd
China University of Metrology
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Priority to CN201910944520.0A priority Critical patent/CN110557871B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0464—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0471—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor detecting the proximity, the presence or the movement of an object or a person
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/16—Matrix or vector computation, e.g. matrix-matrix or matrix-vector multiplication, matrix factorization
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
    • G06N3/00—Computing arrangements based on biological models
    • G06N3/004—Artificial life, i.e. computing arrangements simulating life
    • G06N3/006—Artificial life, i.e. computing arrangements simulating life based on simulated virtual individual or collective life forms, e.g. social simulations or particle swarm optimisation [PSO]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

the invention discloses an office light environment regulation and control system and method based on natural lighting, and belongs to the technical field of indoor lighting. The intelligent LED light source comprises a main control module, an indoor photosensitive sensor, an outdoor photosensitive sensor, an LED light bar, an LED driving module, a 4G communication module and an indoor human body induction sensor. Use the main control module control indoor, outer light sensing sensor is to the office, outer illuminance and colour temperature carry out data acquisition, and compare weather station weather information, simultaneously gather the desktop illuminance and the colour temperature of office's station, compare with standard illuminance value and colour temperature, the intelligent control who goes on LED lamp strip according to the data of gathering, realize the regulation and control of illumination intensity and colour temperature in the office in real time, make the staff have better visual experience, realize comfortable and energy-conserving comprehensive optimum.

Description

office light environment regulation and control system and regulation and control method based on natural lighting
Technical Field
The invention relates to the technical field of indoor lighting, in particular to an office light environment regulation and control system based on natural lighting and a regulation and control method thereof.
background
With the progress of society and the development of science and technology, intelligent energy-saving products become life styles advocated by the current society more and more with higher human-computer interaction experience and energy-saving concepts. Of which the office lighting system has always been the most important part in terms of power usage.
in the traditional sense, office illumination needs people to actively switch on and off illumination equipment, so that manpower and electric power are wasted; in addition, the color temperature and the illumination intensity of the external natural light entering the room can change along with time, the traditional office illumination can not be adjusted along with the change, and higher illumination experience can not be brought to people; and has no gain effect on the light environment of indoor workers, and even reduces the working efficiency.
disclosure of Invention
The invention aims to provide a natural lighting-based office light environment regulation and control system and a regulation and control method thereof, which can solve one or more of the technical problems.
in order to achieve the purpose, the technical scheme provided by the invention is as follows:
the office light environment regulation and control system based on natural lighting comprises an LED light bar and an indoor human body induction sensor; the system comprises an outdoor photosensitive sensor, an indoor photosensitive sensor, a communication module, a main control module and an LED driving module.
the indoor human body induction sensor is used for collecting the data of the personnel in the office; and transmitting the data to the main control module; the main control module judges whether the LED lamp strip is started or not according to the data information of the indoor human body induction sensor.
the outdoor photosensitive sensor is positioned around a window of an office; the outdoor photosensitive sensor is used for collecting the illumination intensity and color temperature data of natural light and transmitting the data to the main control module.
The indoor photosensitive sensor is used for collecting the illumination intensity and color temperature data of the indoor stations and transmitting the data to the main control module.
The communication module is used for collecting the weather data of the networked real-time weather station and sending the data to the main control module.
the LED driving module is used for carrying out dimming control on the LED lamp strip.
the main control module calculates and analyzes various data collected by the outdoor photosensitive sensor, the indoor photosensitive sensor and the communication module, judges whether light is needed to be supplemented on a station or not, and then drives the LED driving module to carry out illumination dimming on the LED lamp strip so that the LED lamp strip outputs proper office illumination intensity and color temperature.
Preferably, the LED light bars are hung above the stations, and the protection plates are arranged on the periphery of the LED light bars; the indoor human body induction sensor is parallel to the indoor photosensitive sensor and is arranged perpendicular to the LED light bar protection plate; the indoor photosensitive sensor is positioned on the outer side of the LED light bar protection plate and is arranged perpendicular to the protection plate; the communication module is parallel to the indoor human body induction sensor and is perpendicular to the LED light bar protection plate, and the LED driving module is parallel to the communication module and is perpendicular to the LED light bar protection plate.
Preferably, the communication module is a 4G communication module. Or a 5G communication module.
a method of regulating an office light environment regulation system including natural lighting, comprising the steps of:
s1, judging whether a person comes or goes indoors or not through data collected by the indoor human body sensor, and if no person is sensed, turning off all the lamp dimming devices; if people are sensed, the LED light bar is adjusted to illuminate through the main control module;
S11, the lighting adjusting process of the LED light bar is that firstly, adjusting boundary values of illumination and color temperature are input in the main control module; secondly, the main control module obtains the following information: real-time weather condition data are obtained through weather station information, and color temperature and illumination value data of natural light entering a room are obtained through an outdoor photosensitive sensor; acquiring illumination intensity and color temperature data of indoor stations through an indoor photosensitive sensor; the main control module compares the boundary value with the real-time data of each sensor to judge whether light supplement is needed or not; when the light compensation is not needed, the LED driving module is used for dimming the LED light bar; when light is required to be supplemented, the LED light bar is adjusted through the main control module to supplement light;
and S12 judging whether the light supplement condition is met:
and (i) setting the illumination intensity of the LED lamp on the working surface of each station:
(ii) The natural lighting average illumination of the working surface of each station is Eout [ Eout ]1,Eout2,……Eoutn]Τ；
(iii) The number of work stations in the office is N, and the matrix of the average illumination Ean requirement values of the working surfaces of the work stations in the office is
Ean＝[Ean1,Ean2,……Eann]Τ；
the condition for determining the light supplement of the working surface of the station is as follows:
the illumination Ea of the working face of the station needing light supplement is [ Ea ═ Ea1,Ea2,……Ean]；
S13, establishing an energy-saving model between the illuminance Ea of the working surface of the station requiring supplementary lighting and the output luminous flux psi of the LED lamp requiring adjustment through an improved particle algorithm with a cross primer according to the proportional relation between the output luminous flux of the lamp and the power consumption of the lamp:
(i) Setting the number of lamps in office as M, each lamp can be in [0, psiM]Adjusting the luminous flux within a range; the combination of the luminous fluxes ψ of any one lamp can be regarded as an M-dimensional particle, so that ψ ═ ψ1,ψ2,……ψM]；
Then Ea ═ ga (t) · ψ; wherein Ga (t) is fitness function, namely the optimal matrix Ga (t) psi of the particle swarm obtained by the improved particle algorithm with cross primers1t (t) ... ψDt (t) ft (t)]Further obtaining the optimal energy-saving LED lamp strip position and the LED lamp strip starting condition;
the color temperature adjustment process of S14 is as follows:
obtaining a color coordinate and illumination relation according to the relation among the illumination E, the brightness N and the color stimulus value B, obtaining a real-time color temperature relation according to the relation between the color coordinate and the color temperature, and comparing the color temperature with an initial color temperature boundary value to realize the adjustment of the color temperature;
S141 the relationship between the luminance N of an ideal diffuse reflecting surface and the illuminance E of a slow reflecting surface is as follows:
further, the luminance N and the color stimulus value B have the following relationship: b is N;
S142, combining the Grossman color law and the CI E1931 chromaticity coordinates, the obtained color coordinates have the following relationship with the color stimulus value:Wherein Am, Bm and Cm are tristimulus values corresponding to the mixed light, and Al, Bl and Cl are tristimulus values corresponding to the l-th color light; for all colors of light, the corresponding relationship between the three stimuli and chromaticity coordinates is as follows:Wherein (am, bm) is the color coordinate corresponding to the mixed light, and (al, bl) is the color coordinate corresponding to the color temperature of the l-th color light;
In summary, the color coordinates and brightness have the following relationship:Wherein ElIs the illuminance formed by each color light on the illuminated surface;
S143, when the lights with different colors are mixed, the color temperature in the mixed light environment is the mixed visual color temperature, and the average value M-A (Tm) of the mixed visual color temperature on the working surface of the station has the following calculation formula:where Tm, j is the jth in the classroom (j e [1, M)]) Mixed color temperature on the working surface, and further mixed color temperature uniformity V can be obtainedTthe calculation formula of (a) is as follows:
wherein Min (Tm) is the minimum value of the mixed apparent color temperature; M-A (Tm) is the average value of the mixed visual color temperature;
meanwhile, the formula for calculating the correlated color temperature of the mixed white light is as follows:where Tm is the color temperature of the mixed light source, Q is the coefficient of the color coordinates of the light source, D is the inverse of the isothermal slope, and (am, bm) is the color coordinates of the light source;
in summary, when the color coordinates of the m light sources and the generated illumination on the illuminated surface are known, the correlated color temperature of the mixed white light can be obtained, and the color temperature can be adjusted.
preferably: the solving process of the fitness function ga (t) in the step S13 is as follows:
Firstly, according to the basic principle of a particle swarm algorithm, N particles are selected, and iteration is performed for T times at most, so that the total power consumption of the lamp is minimum under the condition of meeting the requirement of the average illumination of a working surface, and the fitness function is set as follows:
(when aj + Esaj < Enaj);
in the formula:for the total power consumption value of the lamp dimming device, Eraj is the light supplement illumination obtained on the jth station calculated according to the current lamp combined particles, Esaj is the illumination value of natural lighting on the jth station, and Enaj is the minimum illumination value required on the jth station;
when Eraj + Esaj<in the case of the Enaj, the,Representing the square sum of the error of the total illumination and the required illumination on each station, and multiplying the square sum by 1000 to be used as one of the conditions in the fitness function in order to achieve the influence degree of the same order of magnitude as the total power consumption of the lamp;
As the smaller the particle fitness value is, the better the particle fitness value is, the individual optimal position and the population optimal position of the particle are judged by taking the individual optimal position and the population optimal position as the individual optimal particle and the population optimal particle, and for any ith particle in the t iteration, the fitness fi (t) of the ith particle can be respectively calculated according to the fitness function;
If the fitness value of the particle is added to the last column of the particle swarm location matrix, that is, the particle swarm fitness and location combination matrix part (t) is:
in the matrix, T represents a matrix at the T-th iteration, (i ═ 1,2, …, T);
The population individual best matrix pbest (t) is:
The particle population overall optimal matrix Ga (t) is:
Ga(t)＝[ψ1t (t) ... ψDt (t) ft (t)]。
The invention has the technical effects that:
1. According to the invention, color temperature regulation and control and illumination intensity regulation are combined, on the basis of natural lighting, the indoor color temperature and illumination intensity are intelligently regulated, the electric energy consumption of indoor illumination is reduced, and very comfortable illumination experience is brought to people.
2. Adopt outdoor photosensitive sensor on the basis to the illumination intensity and the colour temperature analysis of the natural light that will get into the office, acquire real-time weather information of weather station through communication module, adopt the means that indoor photosensitive sensor and indoor human body induction sensor combined together, when the office is unmanned, host system cuts off the power supply of LED lamp strip, only when someone activity in the room, indoor photosensitive sensor gathers indoor illumination intensity and colour temperature, and then adjust LED drive module, adjust LED lamp strip work, realize that the staff that accords with carries out the illumination intensity and the colour temperature regulation of work, practice thrift the electric energy and the reinforcing is used and is experienced.
3. The regulation and control system is combined with each LED lamp strip, so that each LED lamp strip can be freely spliced and combined, different illumination intensity regulation can be realized according to different occasions, and the applicability is high.
Drawings
the accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
in the drawings:
fig. 1 is a schematic structural diagram of an office light environment regulating system based on natural lighting.
Fig. 2 is a schematic view illustrating installation of each sensor communication module on an LED light bar.
fig. 3 is a flowchart of adjusting the indoor illumination intensity by the lamp dimming device.
FIG. 4 is a flow chart of an improved particle swarm algorithm for cross factors.
fig. 5 is a top view of a splice of LED light bars incorporating the present system.
The above figures illustrate the following: 1. the system comprises an external natural light source, 2 outdoor photosensitive sensors, 3 LED lamp bars, 4 indoor photosensitive sensors, 5 indoor human body induction sensors, 6 a main control module, 7.4G communication modules, 8 LED driving modules, 9 stations, 10 lamp dimming devices, 11 electric wires and 12 protection plates.
Detailed Description
the present invention will now be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided only for the purpose of illustrating the present invention and are not to be construed as unduly limiting the invention.
it should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
as shown in fig. 1, a natural lighting based office light environment regulation and control system comprises an LED light bar and an indoor human body sensor; the system comprises an outdoor photosensitive sensor, an indoor photosensitive sensor, a communication module, a main control module and an LED driving module.
the LED lamp strip hangs in the station top, and LED lamp strip sets up the guard plate all around. On the protection board is provided with
the indoor human body induction sensor is parallel to the indoor photosensitive sensor and is arranged perpendicular to the LED light bar protection plate; the indoor human body induction sensor is used for collecting the data of the personnel in the office; and transmitting the data to the main control module; the main control module judges whether the LED lamp strip is started or not according to the data information of the indoor human body induction sensor.
The outdoor photosensitive sensor is positioned around a window of an office; the outdoor photosensitive sensor is used for collecting the illumination intensity and color temperature data of natural light and transmitting the data to the main control module.
the indoor photosensitive sensor is positioned on the outer side of the LED light bar protection plate and is arranged perpendicular to the protection plate; the indoor photosensitive sensor is used for collecting the illumination intensity and color temperature data of the indoor stations and transmitting the data to the main control module.
The 4G communication module is parallel to the indoor human body induction sensor and is installed perpendicular to the LED light bar protection plate, and the 4G communication module is used for collecting networking real-time weather data of the weather station and sending the data to the main control module.
the LED driving module is parallel to the 4G communication module and is installed perpendicular to the LED light bar protection plate. The LED driving module is used for carrying out dimming control on the LED lamp strip.
The main control module calculates and analyzes various data collected by the outdoor photosensitive sensor, the indoor photosensitive sensor and the communication module, judges whether light is needed to be supplemented on a station or not, and then drives the LED driving module to carry out illumination dimming on the LED lamp strip so that the LED lamp strip outputs proper office illumination intensity and color temperature.
A method of regulating an office light environment regulation system including natural lighting, comprising the steps of:
s1, judging whether a person comes or goes indoors or not through data collected by the indoor human body sensor, and if no person is sensed, turning off all the lamp dimming devices; if the induction is someone, the LED light bar is adjusted to illuminate through the main control module.
s11, the lighting adjusting process of the LED light bar is that firstly, adjusting boundary values of illumination and color temperature are input in the main control module; secondly, the main control module obtains the following information: real-time weather condition data are obtained through weather station information, and color temperature and illumination value data of natural light entering a room are obtained through an outdoor photosensitive sensor; acquiring illumination intensity and color temperature data of indoor stations through an indoor photosensitive sensor; the main control module compares the boundary value with the real-time data of each sensor to judge whether light supplement is needed or not; when the light compensation is not needed, the LED driving module is used for dimming the LED light bar; when light is required to be supplemented, the LED light bar is adjusted through the main control module to supplement light;
and S12 judging whether the light supplement condition is met:
and (i) setting the illumination intensity of the LED lamp on the working surface of each station:
(ii) The natural lighting average illumination of the working surface of each station is Eout [ Eout ]1,Eout2,……Eoutn]Τ；
(iii) The number of work stations in an office is N, and the working surface average illumination Ean requirement value matrix of the office work stations is Ean ═ Ean1,Ean2,……Eann]Τ；
the condition for determining the light supplement of the working surface of the station is as follows:
the illumination Ea of the working face of the station needing light supplement is [ Ea ═ Ea1,Ea2,……Ean]；
s13 generally, the smaller the luminous flux output by the lamp, the less power consumed. In order to achieve maximum energy saving on the basis of ensuring the comfort of workers, a particle swarm algorithm is generally adopted to calculate the output luminous flux of a lamp, and the general particle swarm algorithm is easily trapped in local extreme values, premature convergence and other problems, the diversity of particles needs to be improved on the basis of keeping interaction and interaction among the particles, so that the global search of the algorithm is facilitated, therefore, an improved particle algorithm with a cross primer is introduced, and an energy-saving model between the illuminance Ea of light supplement required by a working face of a station and the output luminous flux psi of an LED lamp required to be adjusted is established:
(i) Setting the number of lamps in office as M, each lamp can be in [0, psiM]adjusting the luminous flux within a range; the combination of the luminous fluxes ψ of any one lamp can be regarded as an M-dimensional particle, so that ψ ═ ψ1,ψ2,……ψM]；
Then Ea ═ ga (t) · ψ; wherein Ga (t) is fitness function, namely the optimal matrix Ga (t) psi of the particle swarm obtained by the improved particle algorithm with cross primers1t (t) ... ψDt (t) ft (t)]further obtaining the optimal energy-saving LED lamp strip position and the LED lamp strip starting condition;
the solving process of the fitness function ga (t) in the step S13 is as follows:
firstly, according to the basic principle of a particle swarm algorithm, taking N particles, and iterating for T times at most, so that the total power consumption of the lamp is minimum under the condition of meeting the average illumination requirement of a working surface, and setting a fitness function Ga (T) as follows:
(when raj + Esaj < Enaj);
In the formula:for the total power consumption value of the lamp dimming device, Eraj is the light supplement illumination obtained on the jth station calculated according to the current lamp combined particles, Esaj is the illumination value of natural lighting on the jth station, and Enaj is the minimum illumination value required on the jth station;
When Eraj + Esaj<in the case of the Enaj, the,Representing errors of total illumination and required illumination on each stationThe sum of squares of the differences, to reach the same order of magnitude of influence as the total power consumption of the luminaire, should be multiplied by 1000 as one of the conditions in the fitness function;
As the smaller the particle fitness value is, the better the particle fitness value is, the individual optimal position and the population optimal position of the particle are judged by taking the individual optimal position and the population optimal position as the individual optimal particle and the population optimal particle, and for any ith particle in the t iteration, the fitness fi (t) of the ith particle can be respectively calculated according to the fitness function;
if the fitness value of the particle is added to the last column of the particle swarm location matrix, that is, the particle swarm fitness and location combination matrix part (t) is:
in the matrix, T represents a matrix at the T-th iteration, (i ═ 1,2, …, T);
The population individual best matrix pbest (t) is:
the particle swarm overall optimal matrix gbest (t) is:
Ga(t)＝[ψ1t (t) ... ψDt (t) ft (t)]。
the main difference between the improved algorithm with the crossover factor and the traditional algorithm is that: the particle swarm needs to carry out intersection and variation operations after updating the speed and the position, the offspring particles generated through intersection variation theoretically inherit the advantages of the parent particles, not only can learn self experience and swarm experience, but also can get rid of the possibility that the parent particles fall into local optimality, and the algorithm flow chart is shown in fig. 4.
The color temperature adjustment process of S14 is as follows:
Obtaining a color coordinate and illumination relation according to the relation among the illumination E, the brightness N and the color stimulus value B, obtaining a real-time color temperature relation according to the relation between the color coordinate and the color temperature, and comparing the color temperature with an initial color temperature boundary value to realize the adjustment of the color temperature;
S141 the relationship between the luminance N of an ideal diffuse reflecting surface and the illuminance E of a slow reflecting surface is as follows:Further, the luminance N and the color stimulus value B have the following relationship: b is N;
S142 combining the glasman color law with the CIE1931 chromaticity coordinates, the obtained color coordinates and the color stimulus value have the following relationship:where Am, Bm, Cm are tristimulus values corresponding to the mixed light, Al，Bl，ClIs the tristimulus value corresponding to the first color light; for all colors of light, the corresponding relationship between the three stimuli and chromaticity coordinates is as follows:wherein (am, bm) is the color coordinate corresponding to the mixed light, and (al, bl) is the color coordinate corresponding to the color temperature of the l-th color light;
in summary, the color coordinates and brightness have the following relationship:wherein Elis the illuminance formed by each color light on the illuminated surface;
S143, when the lights with different colors are mixed, the color temperature in the mixed light environment is the mixed visual color temperature, and the average value M-A (Tm) of the mixed visual color temperature on the working surface of the station has the following calculation formula:where Tm, j is the jth in the classroom (j e [1, M)]) Mixed color temperature on the working surface, and further mixed color temperature uniformity V can be obtainedTthe calculation formula of (a) is as follows:wherein Min (Tm) is the minimum value of the mixed apparent color temperature; M-A(Tm) is the arithmetic average of the mixed apparent color temperatures;
meanwhile, the formula for calculating the correlated color temperature of the mixed white light is as follows:where Tm is the color temperature of the mixed light source, Q is the coefficient of the color coordinates of the light source, D is the inverse of the isothermal slope, and (am, bm) is the color coordinates of the light source;
In summary, when the color coordinates of the m light sources and the generated illumination on the illuminated surface are known, the correlated color temperature of the mixed white light can be obtained, and the color temperature can be adjusted.
In addition, in this embodiment, install this governing system's LED lamp strip, can change according to the size of the different stations of different offices, generally the level is arranged in directly over the station, provides the illumination for office staff official working. If the area of the station is large, the lamp dimming device can be spliced for use, and a spliced top view is given in fig. 5.
the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. office light environment regulation and control system based on natural daylighting, its characterized in that: the LED human body induction sensor comprises an LED lamp bar and an indoor human body induction sensor; an outdoor photosensitive sensor, an indoor photosensitive sensor, a communication module, a main control module and an LED driving module,
the indoor human body induction sensor is used for collecting the data of the personnel in the office; and transmitting the data to the main control module;
the main control module judges whether the LED lamp bar is started or not according to the data information of the indoor human body induction sensor;
The outdoor photosensitive sensor is positioned around a window of an office; the outdoor photosensitive sensor is used for collecting the illumination intensity and color temperature data of natural light and transmitting the data to the main control module;
the indoor photosensitive sensor is used for collecting the illumination intensity and color temperature data of the indoor station and transmitting the data to the main control module;
The communication module is used for acquiring the weather data of the networked real-time weather station and sending the data to the main control module;
the LED driving module is used for carrying out dimming control on the LED lamp strip;
the main control module calculates and analyzes various data collected by the outdoor photosensitive sensor, the indoor photosensitive sensor and the communication module, judges whether light is needed to be supplemented on a station or not, and then drives the LED driving module to carry out illumination dimming on the LED lamp strip so that the LED lamp strip outputs proper office illumination intensity and color temperature.
2. A natural lighting based office light environment conditioning system according to claim 1, wherein: the LED light bars are hung above the stations, and protection plates are arranged around the LED light bars; the indoor human body induction sensor is parallel to the indoor photosensitive sensor and is arranged perpendicular to the LED light bar protection plate; the indoor photosensitive sensor is positioned on the outer side of the LED light bar protection plate and is arranged perpendicular to the protection plate; the communication module is parallel to the indoor human body induction sensor and is perpendicular to the LED light bar protection plate, and the LED driving module is parallel to the communication module and is perpendicular to the LED light bar protection plate.
3. a natural lighting based office light environment conditioning system according to claim 1, wherein: the communication module is a 4G communication module.
4. the method of claim 1, comprising a natural lighting based office light environment conditioning system, wherein: the method comprises the following steps:
S1, judging whether a person comes or goes indoors or not through data collected by the indoor human body sensor, and if no person is sensed, turning off all the lamp dimming devices; if people are sensed, the LED light bar is adjusted to illuminate through the main control module;
s11, the lighting adjusting process of the LED light bar is that firstly, adjusting boundary values of illumination and color temperature are input in the main control module; secondly, the main control module obtains the following information: real-time weather condition data are obtained through weather station information, and color temperature and illumination value data of natural light entering a room are obtained through an outdoor photosensitive sensor; acquiring illumination intensity and color temperature data of indoor stations through an indoor photosensitive sensor; the main control module compares the boundary value with the real-time data of each sensor to judge whether light supplement is needed or not; when the light compensation is not needed, the LED driving module is used for dimming the LED light bar; when light is required to be supplemented, the LED light bar is adjusted through the main control module to supplement light;
and S12 judging whether the light supplement condition is met:
and (i) setting the illumination intensity of the LED lamp on the working surface of each station:
(ii) The natural lighting average illumination of the working surface of each station is Eout [ Eout ]1,Eout2,……Eoutn]Τ；
(iii) the number of work stations in an office is N, and the working surface average illumination Ean requirement value matrix of the office work stations is Ean ═ Ean1,Ean2,……Eann]Τ；
the condition for determining the light supplement of the working surface of the station is as follows:
the illumination Ea of the working face of the station needing light supplement is [ Ea ═ Ea1,Ea2,……Ean]；
S13, establishing an energy-saving model between the illuminance Ea of the working surface of the station requiring supplementary lighting and the output luminous flux psi of the LED lamp requiring adjustment through an improved particle algorithm with a cross primer according to the proportional relation between the output luminous flux of the lamp and the power consumption of the lamp:
(i) Setting the number of lamps in office as M, each lamp can be in [0, psiM]adjusting the luminous flux within a range; the combination of the luminous fluxes ψ of any one lamp can be regarded as an M-dimensional particle, so that ψ ═ ψ1,ψ2,……ψM]；
Then Ea ═ ga (t) · ψ; wherein Ga (t) is fitness function, namely the optimal matrix Ga (t) psi of the particle swarm obtained by the improved particle algorithm with cross primers1t (t) ... ψDt (t) ft (t)]further obtaining the optimal energy-saving LED lamp strip position and the LED lamp strip starting condition;
the color temperature adjustment process of S14 is as follows:
obtaining a color coordinate and illumination relation according to the relation among the illumination E, the brightness N and the color stimulus value B, obtaining a real-time color temperature relation according to the relation between the color coordinate and the color temperature, and comparing the color temperature with an initial color temperature boundary value to realize the adjustment of the color temperature;
S141 the relationship between the luminance N of an ideal diffuse reflecting surface and the illuminance E of a slow reflecting surface is as follows:
Further, the luminance N and the color stimulus value B have the following relationship: b is N;
S142 combining the glasman color law with the CIE1931 chromaticity coordinates, the obtained color coordinates and the color stimulus value have the following relationship:where Am, Bm, Cm are tristimulus values corresponding to the mixed light, Al，Bl，Clis the tristimulus value corresponding to the first color light; for all colors of light, the corresponding relationship between the tristimulus values and chromaticity coordinates is as follows:wherein (am, bm) is the color coordinate corresponding to the mixed light, and (al, bl) is the color coordinate corresponding to the color temperature of the l-th color light;
in summary, the color coordinates and brightness have the following relationship:Wherein ElIs the illuminance formed by each color light on the illuminated surface;
s143, when the lights with different colors are mixed, the color temperature in the mixed light environment is the mixed visual color temperature, and the average value M-A (Tm) of the mixed visual color temperature on the working surface of the station has the following calculation formula:
where Tm, j is the jth in the classroom (j e [1, M)]) Mixed color temperature on the working surface, and further mixed color temperature uniformity V can be obtainedTthe calculation formula of (a) is as follows:wherein Min (Tm) is the minimum value of the mixed apparent color temperature; M-A (Tm) is the average value of the mixed visual color temperature;
meanwhile, the formula for calculating the correlated color temperature of the mixed white light is as follows:where Tm is the color temperature of the mixed light source, Q is the coefficient of the color coordinates of the light source, D is the inverse of the isothermal slope, and (am, bm) is the color coordinates of the light source;
In summary, when the color coordinates of the m light sources and the generated illumination on the illuminated surface are known, the correlated color temperature of the mixed white light can be obtained, and the color temperature can be adjusted.
5. the method of claim 4, comprising a natural lighting based office light environment conditioning system, wherein: the solving process of the fitness function ga (t) in the step S13 is as follows:
firstly, according to the basic principle of a particle swarm algorithm, N particles are selected, and iteration is performed for T times at most, so that the total power consumption of the lamp is minimum under the condition of meeting the requirement of the average illumination of a working surface, and the fitness function is set as follows:
In the formula:For the total power consumption value of the lamp dimming device, Eraj is the light supplement illumination obtained on the jth station calculated according to the current lamp combined particles, Esaj is the illumination value of natural lighting on the jth station, and Enaj is the minimum illumination value required on the jth station;
when Eraj + Esaj<In the case of the Enaj, the,Representing the square sum of the error of the total illumination and the required illumination on each station, and multiplying the square sum by 1000 to be used as one of the conditions in the fitness function in order to achieve the influence degree of the same order of magnitude as the total power consumption of the lamp;
as the smaller the particle fitness value is, the better the particle fitness value is, the individual optimal position and the population optimal position of the particle are judged by taking the individual optimal position and the population optimal position as the individual optimal particle and the population optimal particle, and for any ith particle in the t iteration, the fitness fi (t) of the ith particle can be respectively calculated according to the fitness function;
If the fitness value of the particle is added to the last column of the particle swarm location matrix, that is, the particle swarm fitness and location combination matrix part (t) is:
in the matrix, T represents a matrix at the T-th iteration, (i ═ 1,2, …, T);
the population individual best matrix pbest (t) is:
The particle population overall optimal matrix Ga (t) is:
Ga(t)＝[ψ1t (t) ... ψDt (t) ft (t)]。
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