CN113056074B - Control method and control device of light source system and desktop lighting device - Google Patents
Control method and control device of light source system and desktop lighting device Download PDFInfo
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- CN113056074B CN113056074B CN202110355619.4A CN202110355619A CN113056074B CN 113056074 B CN113056074 B CN 113056074B CN 202110355619 A CN202110355619 A CN 202110355619A CN 113056074 B CN113056074 B CN 113056074B
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
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- H05B47/155—Coordinated control of two or more light sources
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Abstract
The application discloses control method, control device and desktop lighting device of light source system, wherein, light source system's control method is used for regulating and control the illuminance ratio of the light source system including first light source and second light source, regulates and control according to this method light source system can make light source system provide the illuminance ratio (the illuminance ratio is the ratio of paper level illuminance and screen face vertical illuminance) scope of broad under the condition that satisfies paper level illuminance and screen face vertical illuminance demand to and higher illuminance ratio upper limit, and light source system's illuminance ratio can extremely adjust in this scope, satisfies the illumination light environment comfort level requirement of VDT operation.
Description
Technical Field
The present disclosure relates to the field of optical technologies, and in particular, to a control method and a control device for a light source system, and a desktop lighting device.
Background
A Visual Display Terminal (VDT) is a device for performing man-machine interaction in a modern man-machine system, and its main expression mode includes an electronic device having an information input/output device, such as a notebook computer.
With the popularization of visual display terminals, the influence of the visual display terminal on the physical and mental health of users is more and more concerned by the public. The VDT operation is a general term for processing information such as data, characters, images and the like by utilizing the VDT, and has the most remarkable characteristic that a self-luminous display screen is watched, in the operation process, the sight line frequently moves and watches among the VDT, a keyboard and a manuscript, the moving times and amplitude are obviously greater than those of the traditional desktop operation, the visual fatigue is more easily caused, and the working efficiency and the quality are reduced.
At present, most of spaces (such as office spaces, education spaces and reading spaces) for VDT operation adopt general lighting or mixed lighting with locally added table lamps, but the illumination ratio under the current lighting mode cannot meet the requirement of illumination light environment comfort level of VDT operation easily, and negative effects are brought to the operation efficiency.
Disclosure of Invention
In order to solve the technical problem, the application provides a control method and a control device for a light source system and a desktop lighting device, so as to solve the problem that the illumination ratio provided by the current lighting mode is difficult to meet the requirement of illumination light environment comfort level under VDT operation.
In order to achieve the technical purpose, the embodiment of the application provides the following technical scheme:
a control method of a light source system is used for regulating and controlling the illumination ratio of the light source system, the light source system comprises a first light source and a second light source which are arranged at different positions, the initial horizontal illumination difference value of the first light source and the second light source is smaller than the preset illumination, the initial vertical illumination of the first light source is larger than the initial vertical illumination of the second light source, and the control method of the light source system comprises the following steps:
keeping the dimming percentage of the first light source as an initial value, and adjusting the combined luminous flux percentage of the light source system to be a first preset value to reach a target horizontal illuminance value; the combined luminous flux percentage is the sum of the dimming percentage of the first light source and the dimming percentage of the second light source, and the first preset value is the combined luminous flux percentage when the horizontal illuminance of the paper surface reaches the target illuminance through stepless adjustment when the first light source is in the initial state;
keeping the combined luminous flux percentage of the light source system at the first preset value, adjusting the dimming percentage of the first light source to adjust the ratio of the dimming percentages of the light source system to a second preset value to reach a target illumination ratio; the ratio of the dimming percentage of the light source system is the ratio of the dimming percentage of the first light source to the dimming percentage of the second light source, and the second preset value is the ratio of the dimming percentage of the illuminance ratio when the illuminance ratio is steplessly adjusted to reach a target value;
keeping the ratio of the dimming percentages of the light source system as the second preset value, and synchronously adjusting the dimming percentages of the first light source and the second light source so as to adjust the combined luminous flux percentage of the light source system to be target luminous flux, wherein the target luminous flux is the combined luminous flux percentage when the illuminance ratio keeps the target value, and the horizontal illuminance is adjusted steplessly until the target illuminance is reached.
Optionally, the maintaining the dimming percentage of the first light source as an initial value, and the adjusting the combined luminous flux percentage of the light source system to the first initial value includes:
locking a dimming percentage of the first light source to 0%;
and adjusting the combined luminous flux percentage of the light source system from 0% to the first preset value in a stepless mode, wherein the dimming percentage of the second light source is changed along with the change of the combined luminous flux percentage of the light source system.
Optionally, the maintaining the combined luminous flux percentage of the light source system at the first preset value, and adjusting the dimming percentage of the first light source to adjust the ratio of the dimming percentages of the light source system at the second preset value includes:
the dimming percentage of the first light source is adjusted from 0% in an increasing mode, the dimming percentage of the second light source is adjusted from the first preset value in a decreasing mode along with the dimming percentage of the first light source, and therefore the ratio of the dimming percentages of the light source system is adjusted to be a second preset value;
at each time in the dimming percentage adjustment process of the first light source, the sum of the dimming percentage of the first light source and the dimming percentage of the second light source is the first preset value.
Optionally, the maintaining the ratio of the dimming percentages of the light source systems as the second preset value, and the synchronously adjusting the dimming percentages of the first light source and the second light source to adjust the combined luminous flux percentage of the light source systems to the target luminous flux includes:
and controlling the dimming percentage of the first light source and the dimming percentage of the second light source to increase or decrease by the same multiple so as to adjust the combined luminous flux percentage of the light source system to the target luminous flux and finally reach the target horizontal illuminance.
A control device of a light source system is used for regulating and controlling the illumination ratio of the light source system based on any one of the control methods of the light source system; the light source system comprises a first light source and a second light source which are arranged at different positions, the initial horizontal illuminance difference value of the first light source and the second light source is smaller than the preset illuminance, and the initial vertical illuminance of the first light source is larger than that of the second light source; the control device of the light source system comprises: a horizontal illuminance controller, a first controller and a second controller;
the horizontal illuminance controller includes a first state, a second state, and a third state.
When the horizontal illuminance controller is in a first state, the horizontal illuminance controller is used for adjusting the combined luminous flux percentage of the light source system, in the adjusting process, the first controller is in a locking state, and the second controller synchronously coordinates and adjusts along with the adjustment of the horizontal illuminance controller until the sum of the dimming percentages is a first preset value;
when the horizontal illuminance controller is in a second state, the first controller is used for adjusting the ratio of the dimming percentages of the first light source and the second light source, when the first controller is adjusted and controlled, the horizontal illuminance controller is in a locked state, and on the premise that the sum of the dimming percentages of the first controller and the second controller is a first preset value, the second controller performs coordinated adjustment along with the first controller until the ratio of the dimming percentages is a second preset value;
the horizontal illuminance controller is used for adjusting the combined luminous flux percentage of the light source system and keeping the dimming percentages of the first light source and the second light source increased or decreased at the same multiple; when the horizontal illuminance controller is regulated, the first controller and the second controller synchronously and cooperatively regulate along with the regulation of the horizontal illuminance controller on the premise of ensuring that the ratio of the dimming percentage is a second preset value;
when the horizontal illuminance controller is in a third state, the first controller and the second controller are both in a free adjustment state; the first controller is used for adjusting the dimming percentage of the first light source when in the free adjustment state;
the second controller is configured to adjust a dimming percentage of the second light source when in the free adjustment state.
Optionally, the process of adjusting and controlling the illuminance ratio of the light source system includes:
adjusting the horizontal illuminance controller to the first state, adjusting the horizontal illuminance controller, and keeping the dimming percentage of the first light source as an initial value until a combined luminous flux percentage of the light source system is a first preset value, wherein the combined luminous flux percentage is the sum of the dimming percentage of the first light source and the dimming percentage of the second light source; adjusting the horizontal illuminance controller to the second state, adjusting the first controller, keeping the combined luminous flux percentage of the light source system at the first preset value, and adjusting the dimming percentage of the first light source until the ratio of the dimming percentage of the light source system is adjusted to a second preset value, wherein the ratio of the dimming percentage of the light source system is the ratio of the dimming percentage of the first light source to the dimming percentage of the second light source;
keeping the horizontal illuminance controller in the second state, adjusting the horizontal illuminance controller, keeping the ratio of the dimming percentages of the light source systems to be the second preset value, and adjusting the dimming percentages of the first light source and the second light source in the same proportion to adjust the combined luminous flux percentage of the light source systems to be the target luminous flux;
adjusting the horizontal illuminance controller to the third state, adjusting the first controller and the second controller until a target luminous flux and a target dimming percentage ratio is reached.
A desktop lighting fixture, comprising: a device body, a light source system and a control device of the light source system as described in any one of the above; wherein the content of the first and second substances,
the light source system comprises a first light source and a second light source which are arranged at different positions in the device body, the difference value of the initial horizontal illuminance of the first light source and the second light source is smaller than the preset illuminance, and the initial vertical illuminance of the first light source is larger than the initial vertical illuminance of the second light source; the preset illumination is that the ratio of the difference value of the initial horizontal illumination value of the first light source and the initial horizontal illumination value of the second light source to the initial horizontal illumination value of the first light source is less than or equal to 5%.
Optionally, the apparatus body includes: the table comprises a table, a first baffle, a second baffle, a third baffle, a fourth baffle and a fifth baffle; wherein the content of the first and second substances,
the desk comprises a desktop, the desktop comprises a paper surface area and an electronic equipment setting area, the electronic equipment setting area is used for setting electronic equipment, the first baffle is positioned on one side of the electronic equipment setting area, which is far away from the paper surface area, and the surface of the first baffle is vertical to the desktop;
one edge of the second baffle is connected to one end, far away from the table top, of the first baffle, the surface of the second baffle is parallel to the table top, and the surface, facing the table top, of the second baffle is used for arranging the second light source;
one edge of the third baffle is connected to one end, far away from the first baffle, of the second baffle, and the third baffle is parallel to the first baffle;
the fourth baffle and the fifth baffle are respectively arranged on one side surface, far away from the first baffle, of the third baffle and are used for forming a plurality of storage spaces, the fifth baffle is located between the fourth baffle and the table top, and the fifth baffle faces towards one side surface of the table top and is used for arranging the first light source.
Optionally, the method further includes: a proportioning optimization baffle;
the ratio optimizing baffle is arranged on one side, far away from the second baffle, of the second light source, and the ratio optimizing baffle is fixed to the side surface, facing the third baffle, of the first baffle.
Optionally, the method further includes: an anti-glare baffle;
one end of the anti-dazzle baffle is connected with one end, far away from the third baffle, of the fifth baffle, the surface of the anti-dazzle baffle is parallel to the surface of the first baffle, and the length of the anti-dazzle baffle in the direction perpendicular to the tabletop is larger than the length of the first light source in the direction perpendicular to the tabletop.
It can be seen from the above technical solutions that, the present application provides a control method of a light source system, a control device, and a desktop lighting device, where the control method of the light source system is used to regulate and control an illuminance ratio of the light source system including a first light source and a second light source, where the illuminance ratio is a ratio of a horizontal illuminance of a paper surface to a vertical illuminance of a screen surface in an illumination space, and the method is based on a principle that the horizontal illuminance of the paper surface is related to a combined luminous flux percentage of the light source system, and the illuminance ratio is related to dimming percentages of the first light source and the second light source, and firstly, the combined luminous flux percentage of the light source system is adjusted to a first preset value, and at this time, the horizontal illuminance of the paper surface is provided by the second light source; then keeping the combined luminous flux percentage of the light source system to be the first preset value, adjusting the dimming percentage of the first light source, and realizing the ratio adjustment of the dimming percentage of the light source system, namely realizing the adjustment of the illuminance ratio of the light source system, wherein the horizontal illuminance of the paper surface is unchanged in the process, and the illuminance ratio is gradually and steplessly adjusted to a required value; and finally, keeping the illumination ratio of the light source system unchanged, and synchronously adjusting the dimming percentages of the first light source and the second light source to adjust the combined luminous flux percentage of the light source system to be the target luminous flux. The light source system is regulated and controlled according to the method, so that the light source system can provide a wider illumination ratio range and a higher illumination ratio upper limit under the condition of meeting the requirements of the horizontal illumination of a paper surface and the vertical illumination of a video screen, the illumination ratio of the light source system can be infinitely adjusted in the range, and the requirement of the illumination light environment comfort degree of VDT operation is met.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic flowchart illustrating a control method of a light source system according to an embodiment of the present application;
fig. 2 is a schematic flowchart of a control method of a light source system according to another embodiment of the present application;
fig. 3 is a schematic structural diagram of a control device of a light source system according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a table lighting device according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a light distribution curve of a first light source according to an embodiment of the present application;
fig. 6 is a schematic light distribution curve diagram of a second light source according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
An embodiment of the application provides a control method of a light source system, as shown in fig. 1, the control method of the light source system is used for regulating and controlling an illuminance ratio of the light source system, the light source system includes a first light source and a second light source which are arranged at different positions, an initial horizontal illuminance difference value of the first light source and the second light source is smaller than a preset illuminance, an initial vertical illuminance of the first light source is larger than an initial vertical illuminance of the second light source, and the control method of the light source system includes:
s101: keeping the dimming percentage of the first light source as an initial value, and adjusting the combined luminous flux percentage of the light source system to be a first preset value to reach a target horizontal illuminance value; the combined luminous flux percentage is the sum of the dimming percentage of the first light source and the dimming percentage of the second light source, and the first preset value is the combined luminous flux percentage when the horizontal illuminance of the paper surface reaches the target illuminance through stepless adjustment when the first light source is in the initial state.
S102: keeping the combined luminous flux percentage of the light source system at the first preset value, adjusting the dimming percentage of the first light source to adjust the ratio of the dimming percentages of the light source system to a second preset value to reach a target illumination ratio; the ratio of the dimming percentages of the light source system is the ratio of the dimming percentages of the first light source and the second light source, and the second preset value is the ratio of the dimming percentages when the illuminance ratio is steplessly adjusted to reach a target value.
S103: keeping the ratio of the dimming percentages of the light source system as the second preset value, and synchronously adjusting the dimming percentages of the first light source and the second light source so as to adjust the combined luminous flux percentage of the light source system to be target luminous flux, wherein the target luminous flux is the combined luminous flux percentage when the illuminance ratio keeps the target value, and the horizontal illuminance is adjusted steplessly until the target illuminance is reached.
The initial horizontal illuminance of the first light source is a paper-surface horizontal illuminance value when the first light source is turned on alone at a rated power (at this time, the dimming percentage of the first light source is 100%, and the luminous flux is 100%), and the initial horizontal illuminance of the second light source is a paper-surface horizontal illuminance value when the second light source is turned on alone at a rated power (at this time, the dimming percentage of the second light source is 100%, and the luminous flux is 100%).
Similarly, the initial vertical illuminance of the first light source refers to a vertical illuminance value of the screen when the first light source is turned on alone at the rated power (at this time, the dimming percentage of the first light source is 100%, and the luminous flux is 100%), which is denoted as Ev1The initial vertical illuminance of the second light source is a vertical illuminance value of the screen surface when the second light source is independently turned on at a rated power (at this time, the dimming percentage of the second light source is 100%, and the luminous flux is 100%), and is marked as Ev2。
The difference value of the initial horizontal illuminance between the first light source and the second light source is smaller than the preset illuminance, which means that the ratio of the difference value between the initial horizontal illuminance value of the first light source and the initial horizontal illuminance value of the second light source to the initial horizontal illuminance value of the first light source is smaller than or equal to 5%, and optionally, the difference value of the initial horizontal illuminance between the first light source and the second light source is zero, that is, the initial horizontal illuminance values of the first light source and the second light source are equal to each other.
Taking the initial horizontal illuminance values of the first light source and the second light source as an example, when the initial horizontal illuminance values of the first light source and the second light source are equal, the initial horizontal illuminance of the first light source or the second light source is recorded as ESWhen the dimming percentages of the first light source and the second light source are the same, the horizontal illuminance value of the paper surface is also the same.
The combined luminous flux percentage is a0，a0Stepless adjustable in the range of 0-100%, stepless adjustable means continuous smooth adjustment in the range of 0-100%, and the horizontal illumination of paper surface is recorded as EhThen, there are:
when a is0When n is equal to Eh＝ES×n (1)
Recording the real-time dimming percentage of the first light source as a1The real-time dimming percentage of the second light source is a2The ratio of the dimming percentages of the first light source and the second light source is recorded as lambda, and the illuminance ratio is R, then:
a0＝a1+a2 (2)
the following conclusions are not difficult to draw from equations (1), (2) and (3): the paper surface horizontal illuminance value is related to the sum of the dimming percentages of the first light source and the second light source; the illumination ratio is related to the ratio of the dimming percentages of the first light source and the second light source.
As shown in the formula (1), when n is a constant value, i.e. a0When the light source is not changed, the paper surface horizontal illuminance is not changed, so that the paper surface horizontal illuminance is not changed when the sum of the dimming percentages of the first light source and the second light source is a fixed value by combining the formula (2). The initial vertical illuminance values of the first light source and the second light source are different, so the vertical illuminance of the screen surface follows a1And a2The value changes. And when a1And a2The obtained illumination ratio values are the same when the ratio values of (A) and (B) are the same.
Based on the above conclusion, the steps of the control method of the light source system provided in the embodiment of the present application are specifically described.
In step S101, the dimming percentage of the first light source is kept as an initial value, the combined luminous flux percentage of the light source system is adjusted to a first preset value, and the paper-surface horizontal illuminance is a product of the first preset value and Es, and the first light source does not emit light, and the paper-surface horizontal illuminance is provided by the second light source.
In step S102, the combined luminous flux percentage of the light source system is maintained at the first preset value, and the dimming percentage of the first light source is adjusted, assuming that a is0K, the dimming percentage of the second light source is according to a2＝a0-a1In a coordinated manner. After the adjustment in step S102, let the dimming percentage of the first light source be a1λThe dimming percentage of the second light source is a2λThe ratio of illumination distribution R varies with the percentage of light modulation according to formula 4And the first light source and the second light source emit light simultaneously, and the combined luminous flux percentage provided by the first light source and the second light source is a fixed value, so that the horizontal illumination of the paper surface is unchanged in the process, the vertical illumination of the screen surface is gradually increased, and the illumination ratio is gradually reduced.
In step S103, the dimming percentages of the first and second light sources are increased or decreased by the same factor, i.e. a0＝βk，a1＝βa1λ，a2＝βa2λ. In the process, the first light source and the second light source emit light simultaneously, and the ratio of the dimming percentage of the first light source to the dimming percentage of the second light source is a fixed value, so that the illumination ratio value is unchanged, and the system illumination value is increased along with the increase of the combined luminous flux.
The control method of the light source system is used for regulating and controlling the illumination ratio of the light source system comprising a first light source and a second light source, wherein the illumination ratio is the ratio of the horizontal illumination of a paper surface in an illumination space to the vertical illumination of a screen surface; then keeping the combined luminous flux percentage of the light source system to be the first preset value, adjusting the dimming percentage of the first light source, and realizing the ratio adjustment of the dimming percentage of the light source system, namely realizing the adjustment of the illuminance ratio of the light source system, wherein the horizontal illuminance of the paper surface is unchanged in the process, and the illuminance ratio is gradually changed to a required value; and finally, keeping the illuminance ratio of the light source system unchanged, and synchronously adjusting the dimming percentages of the first light source and the second light source to adjust the combined luminous flux percentage of the light source system to a target luminous flux, wherein in the process, the illuminance ratio of the lighting system is unchanged, the horizontal illuminance of the paper surface and the vertical illuminance of the screen surface are synchronously changed to required values, so that the regulation of the lighting system is completed, the light source system is regulated and controlled according to the method, so that the light source system can provide a wider illuminance ratio range and a higher illuminance ratio upper limit under the condition of meeting the requirements of the horizontal illuminance of the paper surface and the vertical illuminance of the screen surface, the illuminance ratio of the light source system can be steplessly regulated within the range, the stepless regulation of the horizontal illuminance under a certain illuminance ratio can be realized, and the requirement of the lighting environment comfort level of VDT operation can be met.
A specific feasible implementation process of each step of the control method of the light source system provided in the embodiment of the present application is described below.
Optionally, as shown in fig. 2, the maintaining the dimming percentage of the first light source as an initial value, and the adjusting the combined luminous flux percentage of the light source system to the first initial value includes:
s1011: locking a dimming percentage of the first light source to 0%;
s1012: and adjusting the combined luminous flux percentage of the light source system from 0% to the first preset value in a stepless mode, wherein the dimming percentage of the second light source is changed along with the change of the combined luminous flux percentage of the light source system.
The maintaining the combined luminous flux percentage of the light source system at the first preset value, and adjusting the dimming percentage of the first light source to adjust the ratio of the dimming percentages of the light source system to a second preset value includes:
s1021: the dimming percentage of the first light source is adjusted from 0% in an increasing mode, the dimming percentage of the second light source is adjusted from the first preset value in a decreasing mode along with the dimming percentage of the first light source, and therefore the ratio of the dimming percentages of the light source system is adjusted to be a second preset value;
at each moment in the dimming percentage adjustment process of the first light source, the sum of the dimming percentage of the first light source and the dimming percentage of the second light source is the first preset value, and stepless adjustment and control of the illuminance ratio are realized.
The maintaining the ratio of the dimming percentages of the light source systems at the second preset value, and the synchronously adjusting the dimming percentages of the first light source and the second light source to adjust the combined luminous flux percentage of the light source systems to the target luminous flux comprises:
s1031: controlling the dimming percentage of the first light source and the dimming percentage of the second light source to increase or decrease by the same factor so that the combined luminous flux percentage of the light source system is adjusted to the target luminous flux.
In an optional embodiment of the present application, the control method of the light source system further includes:
and adjusting the color temperature of the first light source and the second light source so as to adjust the color temperature of the light source system within a preset color temperature range.
Optionally, the color temperature of the light source system may be adjusted within a range of 3000K, 4000K, 5000K and 6000K.
Correspondingly, an embodiment of the present application further provides a control device of a light source system, which regulates and controls an illuminance ratio of the light source system based on the control method of the light source system according to any of the above embodiments, where the light source system includes a first light source and a second light source disposed at different positions, an initial horizontal illuminance difference between the first light source and the second light source is smaller than a preset illuminance, and an initial vertical illuminance of the first light source is larger than an initial vertical illuminance of the second light source, and with reference to fig. 3, the control device of the light source system includes: a horizontal illuminance controller 10, a first controller 20, and a second controller 30;
the horizontal illuminance controller 10 includes a first state, a second state, and a third state.
When the horizontal illuminance controller 10 is in the first state, the horizontal illuminance controller 10 is configured to adjust the combined luminous flux percentage of the light source system, during the adjustment, the first controller 20 is in the locked state, and the second controller 30 is synchronously and coordinately adjusted with the adjustment of the horizontal illuminance controller 10 until the sum of the dimming percentages is a first preset value;
when the horizontal illuminance controller 10 is in the second state, the first controller 20 is configured to adjust a ratio of dimming percentages of the first light source and the second light source, when the first controller 20 is adjusted, the horizontal illuminance controller 10 is in the locked state, and the second controller 30 performs coordinated adjustment with the first controller 20 on the premise that a sum of the dimming percentages of the first controller 20 and the second controller is a first preset value until the ratio of the dimming percentages is the second preset value;
the horizontal illuminance controller 10 is used to adjust the combined luminous flux percentage of the light source system and keep the dimming percentages of the first and second light sources increasing or decreasing by the same factor; when the horizontal illuminance controller 10 is adjusted and controlled, the first controller 20 and the second controller 30 synchronously and cooperatively adjust with the adjustment of the horizontal illuminance controller 10 on the premise of ensuring that the ratio of the dimming percentage is a second preset value;
when the horizontal illuminance controller 10 is in the third state, both the first controller 20 and the second controller 30 are in the free adjustment state; the first controller 20 is configured to adjust a dimming percentage of the first light source when in the free adjustment state; the second controller 30 is configured to adjust a dimming percentage of the second light source when in the free adjustment state.
Correspondingly, the process of regulating and controlling the illuminance ratio of the light source system based on the control method of the light source system provided by any one of the embodiments includes:
adjusting the horizontal illuminance controller 10 to the first state, adjusting the horizontal illuminance controller 10, and keeping the dimming percentage of the first light source as an initial value until a combined luminous flux percentage of the light source system is a first preset value, where the combined luminous flux percentage is a sum of the dimming percentage of the first light source and the dimming percentage of the second light source;
adjusting the horizontal illuminance controller 10 to the second state, adjusting the first controller 20, keeping the combined luminous flux percentage of the light source system at the first preset value, and adjusting the dimming percentage of the first light source until the ratio of the dimming percentage of the light source system is adjusted to a second preset value, wherein the ratio of the dimming percentage of the light source system is the ratio of the dimming percentage of the first light source to the dimming percentage of the second light source;
keeping the horizontal illuminance controller 10 in the second state, adjusting the horizontal illuminance controller 10, keeping the ratio of the dimming percentages of the light source systems to be the second preset value, and adjusting the dimming percentage of the first light source and the dimming percentage of the second light source in the same proportion so as to adjust the combined luminous flux percentage of the light source systems to be the target luminous flux;
adjusting the horizontal illuminance controller 10 to the third state, and adjusting the first controller 20 and the second controller 30 until a target luminous flux and a target dimming percentage ratio are reached.
In an optional embodiment of the present application, the control device of the light source system further comprises: and the color temperature controller is used for adjusting the color temperatures of the first light source and the second light source so as to adjust the color temperature of the light source system within a preset color temperature range.
Optionally, the color temperature of the light source system may be adjusted within a range of 3000K, 4000K, 5000K and 6000K.
In this embodiment, the control device of the light source system includes two control modes, when the horizontal illuminance controller 10 is in the first state and the second state, the control mode is in the coordinated regulation mode, and the first controller 20 and the second controller 30 are in the interactive regulation state; when the horizontal illuminance controller 10 is in the third state, it is in the free regulation mode, and the first controller 20 and the second controller 30 are in the free regulation state.
When the first controller 20 and the second controller 30 are in the first state and the second state, i.e., the coordinated control mode, the control method includes (i) horizontal illuminance control, (ii) illuminance ratio control, and (iii) illuminance control when the illuminance ratio is not changed.
When the button of the horizontal illuminance controller 10 is in the on state, the coordinated regulation mode is performed, and the first state and the second state can be regulated. When a button of the first light source controller is in an off state, the horizontal illuminance controller 10 is in a first state, at this time, the first controller 20 is in a locked state, and the second controller 30 is synchronously and cooperatively regulated along with the horizontal illuminance controller to regulate and control the horizontal illuminance; when the button of the first light source controller is in the on state, the horizontal illuminance controller is in the second state, and at this time, the horizontal illuminance controller 10 and the first controller 20 are in one-way coordinated regulation and are in an equal proportion change relationship. The first controller 20 and the second controller 30 are in one-way coordinated regulation and are in a combined luminous flux percentage invariant relation. When the first controller 20 is regulated, the combined luminous flux percentage is not changed, illuminance ratio regulation and control are performed, and when the horizontal illuminance controller 10 is regulated, the dimming percentage ratio is not changed, and illuminance regulation and control are performed when the illuminance ratio is not changed.
In the coordinated regulation mode, the dimming percentage of the first controller 20 and the dimming percentage of the second controller 30 are not greater than the dimming percentage of the horizontal illuminance controller 10, and the horizontal illuminance controller 10, the first controller 20, and the second controller 30 are all in unidirectional coordinated regulation, i.e., a and B are in unidirectional regulation, i.e., B is regulated along with a, but a is not regulated along with B. The three controllers are all in an initial state, when the horizontal illuminance controller 10 is in an open state and a button of the first controller 20 is in a closed state, the first controller 20 is in a locked state, the horizontal illuminance controller 10 and the second controller are in one-way coordinated regulation, and when the horizontal illuminance controller 10 is regulated, the second controller 30 is in one-way synchronous coordinated regulation along with the horizontal illuminance controller 10; when the button of the first controller 20 is turned on, the first controller 20 is adjustable, and the horizontal illuminance controller 10 and the first controller 20 are in one-way coordinated regulation and control and in an equal proportion change relationship. The first controller 20 and the second controller 30 are in one-way coordinated regulation and are in a combined luminous flux percentage invariant relation. When the first controller 20 is regulated, the horizontal illuminance controller 10 is in a locked state, and the second controller 30 is regulated and controlled in a one-way coordination manner along with the first controller 20 according to the formula (2); when the horizontal illuminance controller 10 is regulated, the first controller 20 is coordinated with the horizontal illuminance controller 10 by the same one-way multiple, and then the second controller 30 is coordinated with the first controller 20. The initial state is a state in which the controller percentage is reduced to zero, and the locked state is a state in which the controller percentage is fixed.
Firstly, the horizontal illuminance regulation is to regulate the paper surface horizontal illuminance controller 10 when the three controllers are in an initial state, so that the dimming percentage of the horizontal illuminance controller 10 is fixed after the paper surface horizontal illuminance reaches a comfortable value, and the combined luminous flux percentage is obtained; in the horizontal illuminance control process, the first controller 20 is still in the initial state, and the dimming percentage of the second controller 30 is synchronized with the dimming percentage of the horizontal illuminance controller 10. Secondly, the illumination ratio is regulated and controlled by adjusting the first controller 20 until the vertical illumination of the screen surface reaches a comfortable value, so that the optimal illumination ratio is obtained; in the illuminance ratio regulation process, the paper-surface horizontal illuminance controller 10 is in a locked state, the controlled combined luminous flux percentage is unchanged, the dimming percentage of the first controller 20 is gradually increased from 0, and the dimming percentage of the second controller 30 is gradually decreased from the combined dimming percentage and is coordinated with the first light source according to the formula (2). Regulating the illumination when the illumination ratio is unchanged into a controller 10 for adjusting the horizontal illumination of the paper surface until the illumination value under the ratio reaches a comfortable value, and obtaining the optimal illumination value; in the illuminance value regulation process, the dimming percentage ratio of the first controller 20 to the second controller 30 is kept unchanged, and the first controller 20 and the second controller 30 are gradually increased or decreased by the same multiple with the horizontal illuminance controller 10. The comfort value depends on the user and can be set freely.
The free regulation mode is in when the button of the horizontal illuminance controller 10 is in the off state and the button of the first controller 20 is in the on state. At this time, the horizontal illuminance controller 10 is in the third state, and the first controller 20 and the second controller 30 are in the free regulation state.
Correspondingly, an embodiment of the present application further provides a desktop lighting device, as shown in fig. 4, including: the apparatus body 100, the light source system and the control apparatus of the light source system as described in any of the above embodiments, wherein,
the light source system comprises a first light source 108 and a second light source 109 which are arranged at different positions in the device body 100, the initial horizontal illuminance difference value of the first light source 108 and the second light source 109 is smaller than the preset illuminance, and the initial vertical illuminance of the first light source 108 is larger than that of the second light source 109; the preset illumination is that the ratio of the difference value of the initial horizontal illumination value of the first light source and the initial horizontal illumination value of the second light source to the initial horizontal illumination value of the first light source is less than or equal to 5%.
Still referring to fig. 4, the device body 100 includes: a table 110, a first baffle 101, a second baffle 102, a third baffle 103, a fourth baffle 104 and a fifth baffle 105; wherein the content of the first and second substances,
the table 110 comprises a table top, the table top comprises a paper area and an electronic device setting area, the electronic device setting area is used for setting electronic devices, the first baffle 101 is located on one side, away from the paper area, of the electronic device setting area, and the surface of the first baffle 101 is perpendicular to the table top;
one edge of the second baffle plate 102 is connected to one end, away from the table top, of the first baffle plate 101, the surface of the second baffle plate 102 is parallel to the table top, and the second light source 109 is arranged on the surface, facing one side of the table top, of the second baffle plate 102;
one side of the third baffle plate 103 is connected to one end of the second baffle plate 102 far away from the first baffle plate 101, and the third baffle plate 103 is parallel to the first baffle plate 101;
the fourth baffle plate 104 and the fifth baffle plate 105 are respectively disposed on a side surface of the third baffle plate 103 far away from the first baffle plate 101, and are used for forming a plurality of storage spaces, the fifth baffle plate 105 is located between the fourth baffle plate 104 and the table top, and the fifth baffle plate 105 faces the side surface of the table top and is used for disposing the first light source 108.
In fig. 4, besides the corresponding desk 110, a chair 111 is shown, and a notebook computer is disposed in the electronic device installation area on the desktop, i.e. the screen area of the notebook computer is the VDT screen area. The desktop is a horizontal background area except a paper area and an electronic equipment setting area, and a vertical background area is arranged behind a VDT screen area.
Optionally, still referring to fig. 4, the table lighting device further comprises: a proportioning optimization baffle 107 and an anti-glare baffle 106;
the ratio-optimizing baffle 107 is disposed on a side of the second light source 109 away from the second baffle 102, and the ratio-optimizing baffle is fixed on a side surface of the first baffle 101 facing the third baffle 103.
One end of the anti-glare baffle 106 is connected with one end of the fifth baffle 105 far away from the third baffle 103, the surface of the anti-glare baffle 106 is parallel to the surface of the first baffle 101, and the length of the anti-glare baffle 106 in the direction perpendicular to the table top is greater than the length of the first light source 108 in the direction perpendicular to the table top.
The matching optimization baffle 107 can further improve the illumination matching of the light source system, and the anti-glare baffle 106 is used for preventing the first light source 108 from being directly irradiated.
In an alternative embodiment of the present application, the first baffle raises a vertical background area about 60cm above the desktop and can fix the proportioning optimization baffle, the second baffle is used for fixing the second light source, the fifth baffle is used for fixing the first light source and the anti-glare baffle, and the third baffle, the fourth baffle and the fifth baffle cooperate together to enclose a storage space.
Optionally, referring to table 1 below and fig. 5 and 6, table 1 shows optional parameters of the first light source and the second light source, and fig. 5 and 6 are light distribution curves of the first light source and the second light source, respectively.
The first light source and the second light source are both downward-emitting light sources, and both the first light source and the second light source can be modulated steplessly and together emit light with a combined luminous flux. When the first light source is independently started for 100% luminous flux, the horizontal illuminance value of the paper area is 1078lx, the vertical illuminance value of the VDT screen area is 701lx, and the illuminance ratio R at the moment is 1.5; when the second light source is independently turned on for 100% luminous flux, the horizontal illuminance value of the paper surface area a is 1084lx, the vertical illuminance value of the VDT screen area b is 224lx, and the illuminance ratio R is 4.8. Initial horizontal illuminance value E of the first light source and the second light sourcesApproximately equal, the illuminance uniformity of the horizontal background area and the vertical background area is greater than 0.7, and the glare value UGR at the eye position is less than 10, so the illumination device of the embodiment can be realizedWhen the horizontal illumination is not more than 1000lx, the illumination ratio is steplessly adjustable within the range of 1.5-4.8.
Table 1: light source parameter information
| Name (R) | Size (m) | Rated power (W) | Rated luminous flux (lm) |
| First light source | (1.2×0.06×0.068)×1 | 30 | 2250 |
| Second light source | (1.2×0.06×0.094)×2 | 30×2 | 2700×2 |
To sum up, the embodiment of the present application provides a control method, a control device and a desktop lighting device for a light source system, wherein the control method for the light source system is used for regulating and controlling an illuminance ratio of the light source system including a first light source and a second light source, the illuminance ratio is a ratio of a horizontal illuminance of a paper surface to a vertical illuminance of a screen surface in an illumination space, the method is based on a principle that the horizontal illuminance of the paper surface is related to a combined luminous flux percentage of the light source system, and the illuminance ratio is related to a dimming percentage of the first light source and the second light source, and firstly, the combined luminous flux percentage of the light source system is adjusted to a first preset value, and at this time, the horizontal illuminance of the paper surface is provided by the second light source; then keeping the combined luminous flux percentage of the light source system to be the first preset value, adjusting the dimming percentage of the first light source, and realizing the ratio adjustment of the dimming percentage of the light source system, namely realizing the adjustment of the illuminance ratio of the light source system, wherein the horizontal illuminance of the paper surface is unchanged in the process, and the illuminance ratio is gradually changed to a required value; and finally, keeping the illumination ratio of the light source system unchanged, and synchronously adjusting the dimming percentages of the first light source and the second light source to adjust the combined luminous flux percentage of the light source system to be the target luminous flux. The light source system is regulated and controlled according to the method, so that the light source system can provide a wider illumination ratio range and a higher illumination ratio upper limit under the condition of meeting the requirements of the horizontal illumination of a paper surface and the vertical illumination of a video screen, the illumination ratio of the light source system can be infinitely adjusted in the range, and the requirement of the illumination light environment comfort degree of VDT operation is met.
Features described in the embodiments in the present specification may be replaced with or combined with each other, each embodiment is described with a focus on differences from other embodiments, and the same and similar portions among the embodiments may be referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A control method of a light source system is used for regulating and controlling the illumination ratio of the light source system, the light source system comprises a first light source and a second light source which are arranged at different positions, the initial horizontal illumination difference value of the first light source and the second light source is smaller than the preset illumination, the initial vertical illumination of the first light source is larger than the initial vertical illumination of the second light source, and the control method of the light source system comprises the following steps:
keeping the dimming percentage of the first light source as an initial value, and adjusting the combined luminous flux percentage of the light source system to be a first preset value to reach a target horizontal illuminance value; the combined luminous flux percentage is the sum of the dimming percentage of the first light source and the dimming percentage of the second light source, and the first preset value is the combined luminous flux percentage when the horizontal illuminance of the paper surface reaches the target illuminance through stepless adjustment when the first light source is in the initial state;
keeping the combined luminous flux percentage of the light source system at the first preset value, adjusting the dimming percentage of the first light source to adjust the ratio of the dimming percentages of the light source system to a second preset value to reach a target illumination ratio; the ratio of the dimming percentage of the light source system is the ratio of the dimming percentage of the first light source to the dimming percentage of the second light source, and the second preset value is the ratio of the dimming percentage of the illuminance ratio when the illuminance ratio is steplessly adjusted to reach a target value;
keeping the ratio of the dimming percentages of the light source system as the second preset value, and synchronously adjusting the dimming percentages of the first light source and the second light source so as to adjust the combined luminous flux percentage of the light source system to be target luminous flux, wherein the target luminous flux is the combined luminous flux percentage when the illuminance ratio keeps the target value, and the horizontal illuminance is adjusted steplessly until the target illuminance is reached.
2. The method of claim 1, wherein maintaining the dimming percentage of the first light source at an initial value, and wherein adjusting the combined luminous flux percentage of the light source system to a first initial value comprises:
locking a dimming percentage of the first light source to 0%;
and adjusting the combined luminous flux percentage of the light source system from 0% to the first preset value in a stepless mode, wherein the dimming percentage of the second light source is changed along with the change of the combined luminous flux percentage of the light source system.
3. The method of claim 1, wherein maintaining the combined luminous flux percentage of the light source system at the first preset value, and wherein adjusting the dimming percentage of the first light source to adjust the ratio of the dimming percentages of the light source system to a second preset value comprises:
the dimming percentage of the first light source is adjusted from 0% in an increasing mode, the dimming percentage of the second light source is adjusted from the first preset value in a decreasing mode along with the dimming percentage of the first light source, and therefore the ratio of the dimming percentages of the light source system is adjusted to be a second preset value;
at each time in the dimming percentage adjustment process of the first light source, the sum of the dimming percentage of the first light source and the dimming percentage of the second light source is the first preset value.
4. The method of claim 1, wherein maintaining the ratio of the dimming percentages of the light source systems at the second preset value, and wherein synchronously adjusting the dimming percentages of the first and second light sources such that the combined luminous flux percentage of the light source systems is adjusted to the target luminous flux comprises:
and controlling the dimming percentage of the first light source and the dimming percentage of the second light source to increase or decrease by the same multiple so as to adjust the combined luminous flux percentage of the light source system to the target luminous flux and finally reach the target horizontal illuminance.
5. A control device of a light source system, characterized in that the illumination ratio of the light source system is regulated and controlled based on the control method of the light source system according to any one of claims 1 to 4; the light source system comprises a first light source and a second light source which are arranged at different positions, the initial horizontal illuminance difference value of the first light source and the second light source is smaller than the preset illuminance, and the initial vertical illuminance of the first light source is larger than that of the second light source; the control device of the light source system comprises: a horizontal illuminance controller, a first controller and a second controller;
the horizontal illuminance controller comprises a first state, a second state, and a third state;
when the horizontal illuminance controller is in a first state, the horizontal illuminance controller is used for adjusting the combined luminous flux percentage of the light source system, in the adjusting process, the first controller is in a locking state, and the second controller synchronously coordinates and adjusts along with the adjustment of the horizontal illuminance controller until the sum of the dimming percentages is a first preset value;
when the horizontal illuminance controller is in a second state, the first controller is used for adjusting the ratio of the dimming percentages of the first light source and the second light source, when the first controller is adjusted and controlled, the horizontal illuminance controller is in a locked state, and on the premise that the sum of the dimming percentages of the first controller and the second controller is a first preset value, the second controller performs coordinated adjustment along with the first controller until the ratio of the dimming percentages is a second preset value;
the horizontal illuminance controller is used for adjusting the combined luminous flux percentage of the light source system and keeping the dimming percentages of the first light source and the second light source increased or decreased at the same multiple; when the horizontal illuminance controller is regulated, the first controller and the second controller synchronously and cooperatively regulate along with the regulation of the horizontal illuminance controller on the premise of ensuring that the ratio of the dimming percentage is a second preset value;
when the horizontal illuminance controller is in a third state, the first controller and the second controller are both in a free adjustment state; the first controller is used for adjusting the dimming percentage of the first light source when in the free adjustment state;
the second controller is configured to adjust a dimming percentage of the second light source when in the free adjustment state.
6. The control device of the light source system according to claim 5, wherein the process of regulating and controlling the illumination ratio of the light source system based on the control method of the light source system according to any one of claims 1 to 4 comprises:
adjusting the horizontal illuminance controller to the first state, adjusting the horizontal illuminance controller, and keeping the dimming percentage of the first light source as an initial value until a combined luminous flux percentage of the light source system is a first preset value, wherein the combined luminous flux percentage is the sum of the dimming percentage of the first light source and the dimming percentage of the second light source; adjusting the horizontal illuminance controller to the second state, adjusting the first controller, keeping the combined luminous flux percentage of the light source system at the first preset value, and adjusting the dimming percentage of the first light source until the ratio of the dimming percentage of the light source system is adjusted to a second preset value, wherein the ratio of the dimming percentage of the light source system is the ratio of the dimming percentage of the first light source to the dimming percentage of the second light source;
keeping the horizontal illuminance controller in the second state, adjusting the horizontal illuminance controller, keeping the ratio of the dimming percentages of the light source systems to be the second preset value, and adjusting the dimming percentages of the first light source and the second light source in the same proportion to adjust the combined luminous flux percentage of the light source systems to be the target luminous flux;
adjusting the horizontal illuminance controller to the third state, adjusting the first controller and the second controller until a target luminous flux and a target dimming percentage ratio is reached.
7. A desktop lighting device, comprising: a device body, a light source system, and a control device of the light source system according to any one of claims 5 or 6; wherein the content of the first and second substances,
the light source system comprises a first light source and a second light source which are arranged at different positions in the device body, the difference value of the initial horizontal illuminance of the first light source and the second light source is smaller than the preset illuminance, and the initial vertical illuminance of the first light source is larger than the initial vertical illuminance of the second light source; the preset illumination is that the ratio of the difference value of the initial horizontal illumination value of the first light source and the initial horizontal illumination value of the second light source to the initial horizontal illumination value of the first light source is less than or equal to 5%.
8. A table lighting device as claimed in claim 7, wherein the device body comprises: the table comprises a table, a first baffle, a second baffle, a third baffle, a fourth baffle and a fifth baffle; wherein the content of the first and second substances,
the desk comprises a desktop, the desktop comprises a paper surface area and an electronic equipment setting area, the electronic equipment setting area is used for setting electronic equipment, the first baffle is positioned on one side of the electronic equipment setting area, which is far away from the paper surface area, and the surface of the first baffle is vertical to the desktop;
one edge of the second baffle is connected to one end, far away from the table top, of the first baffle, the surface of the second baffle is parallel to the table top, and the surface, facing the table top, of the second baffle is used for arranging the second light source;
one edge of the third baffle is connected to one end, far away from the first baffle, of the second baffle, and the third baffle is parallel to the first baffle;
the fourth baffle and the fifth baffle are respectively arranged on one side surface, far away from the first baffle, of the third baffle and are used for forming a plurality of storage spaces, the fifth baffle is located between the fourth baffle and the table top, and the fifth baffle faces towards one side surface of the table top and is used for arranging the first light source.
9. A table lighting device as claimed in claim 8, further comprising: a proportioning optimization baffle;
the ratio optimizing baffle is arranged on one side, far away from the second baffle, of the second light source, and the ratio optimizing baffle is fixed to the side surface, facing the third baffle, of the first baffle.
10. A table lighting device as claimed in claim 8, further comprising: an anti-glare baffle;
one end of the anti-dazzle baffle is connected with one end, far away from the third baffle, of the fifth baffle, the surface of the anti-dazzle baffle is parallel to the surface of the first baffle, and the length of the anti-dazzle baffle in the direction perpendicular to the tabletop is larger than the length of the first light source in the direction perpendicular to the tabletop.
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