CN117979491B - LED power supply with color temperature stepless adjusting module and control method - Google Patents
LED power supply with color temperature stepless adjusting module and control method Download PDFInfo
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Abstract
The invention discloses an LED power supply with a color temperature stepless regulation module and a control method, and relates to the technical field of LED color temperature mixing. The technical problem that the LED lamp can realize stepless adjustment of the color temperature according to the requirement is conveniently and rapidly realized, and a user can accurately adjust the color temperature to be optimal according to personal preference or specific environmental requirement, so that the optimal illumination effect is achieved; the scene adaptability is improved, different color temperatures can be adopted to adapt to the environment for some design occasions needing special illumination effects under different occasions, and fine color temperature adjustment can be performed; the color temperature adjusting efficiency is greatly improved, and the flexibility of the color temperature adjusting of the LED lamp is improved.
Description
Technical Field
The invention relates to the technical field of LED color temperature adjustment, in particular to an LED power supply with a color temperature stepless adjusting module and a control method.
Background
An LED (light emitting diode) is a semiconductor device capable of converting electric energy into light energy, and has the characteristics of high efficiency, energy saving, long life, short response time, strong controllability, and the like. The color temperature adjusting function of the LED lamp controlled by the LED power supply is a great advantage, and can meet the requirements of different occasions and individuals on illumination color temperature. The color temperature is usually expressed by Kelvin (K), and the light with low color temperature (2700-3000K) is warm, so that a warm and comfortable feeling is provided for people, and the light is suitable for home and rest places; the light with high color temperature (5000-6500K) is cool, gives people a bright and fresh feel, and is suitable for working and learning places.
However, the color temperature adjusting output function of some LED power supplies is not infinitely adjustable, which means that the adjustment of the color temperature can only be switched between several fixed gear positions, and continuous, fine adjustment cannot be achieved. This way of adjustment has the following drawbacks: the flexibility is insufficient, the user cannot accurately adjust to the optimal color temperature according to personal preference or specific environment requirements, and the optimal illumination effect may not be achieved; the scene adaptability is poor, people may need different color temperatures to adapt to the environment in different occasions, and the fixed color temperature adjusting gear may not meet the diversified scene requirements; limiting creative applications, for some design occasions requiring special lighting effects, such as stage lighting, commercial display, etc., the inability to fine color temperature adjustment may limit creative implementation.
Therefore, how to conveniently realize stepless adjustment of the color temperature of the LED lamp according to the requirement is a technical problem to be solved.
Disclosure of Invention
In order to solve the technical problem that the LED lamp can realize stepless adjustment of color temperature according to requirements, the invention provides an LED power supply with a stepless color temperature adjusting module and a control method. The following technical scheme is adopted:
The LED power supply comprises a touch visual stepless regulation instruction input panel, a color temperature stepless regulation module and an LED power supply, wherein the touch visual stepless regulation instruction input panel comprises a liquid crystal touch screen, a touch data analysis chip, an instruction generation chip and a memory, the liquid crystal touch screen is used for visually displaying a standard color temperature color card and feeling touch force, the touch data analysis chip is respectively in communication connection with the liquid crystal touch screen, the instruction generation chip and the memory, the memory is used for storing standard color temperature color card data and stepless dimming instruction data, the touch data analysis chip calculates a touch center point based on the outline of the sensed touch surface, calculates positioning data of the touch center point on the liquid crystal touch screen, obtains dimming target data according to the positioning data, transmits the dimming target data to the instruction generation chip, the instruction generation chip generates stepless dimming instructions based on the dimming target data, and stores the stepless dimming instructions in the memory, the LED power supply is respectively provided with three primary color LED lamp sets through a dimming controller, the dimming control chip is in communication connection with the memory, and the stepless control chip is used for storing the stepless instructions stored in the memory, and the dimming controller is connected with the dimming controller to realize the dimming target action of the dimming controller according to the dimming target action of the dimming control of the dimming controller.
By adopting the technical scheme, the touch visual stepless adjustment instruction input panel can provide a more visual and simple stepless dimming input experience for dimming personnel, the traditional stepless adjustment switch is generally a knob type, such as common volume adjustment, but the stepless adjustment is not suitable for the adjustment signal input of the color temperature in practice, because the adjustment of the color temperature is generally formed by mixing two or three LED basic colors, and the single knob type adjustment can only provide a control signal of the size, so the stepless adjustment is not applicable;
the liquid crystal touch screen can display standard color temperature color cards, the standard color temperature color cards can intuitively display all color temperature effects, after the standard color temperature color cards are checked, the standard color temperature color cards can be realized by only carrying out finger control pressing when dimming personnel views, the liquid crystal touch screen senses the outline of a touch surface, then the outline data of the touch surface are transmitted to a touch data analysis chip, the touch data analysis chip can analyze the outline of the sensed touch surface, the central point of the touch data analysis chip can be extracted, the central point actually represents the dimming target of the dimming personnel, the dimming target data is transmitted to an instruction generation chip, the instruction generation chip can generate stepless dimming instructions according to the dimming target data, the stepless dimming instructions actually refer to control instructions for respectively controlling a dimming controller, the dimming controller can control a driving current control instruction of a plurality of color LEDs of an LED power supply to be output to a three-primary-color LED lamp group, the dimming controller executes the stepless dimming instructions to realize stepless color temperature adjustment corresponding to the dimming target data, the whole input process is very short to the dimming completion time, generally not exceed 0.2 seconds, the specified color temperature adjustment is basically completed instantaneously, if the dimming target data is bad, the dimming effect is still can be adjusted, the LED color temperature can be slid on the touch screen until the LED lamp group is satisfied, and the finger color temperature can be slid for a plurality of times, and the finger color temperature can be satisfied by pressing the touch screen;
The technical problem that the LED lamp can realize stepless adjustment of the color temperature according to the requirement is conveniently and rapidly realized, and a user can accurately adjust the color temperature to be optimal according to personal preference or specific environmental requirement, so that the optimal illumination effect is achieved; the scene adaptability is improved, different color temperatures can be adopted to adapt to the environment for some design occasions needing special illumination effects under different occasions, and fine color temperature adjustment can be performed; the color temperature adjusting efficiency is greatly improved, and the flexibility of the color temperature adjusting of the LED lamp is improved.
Optionally, the visual stepless regulation instruction input panel of touch-control still includes touch-sensitive screen control chip and inductive switch, and touch-sensitive screen control chip and inductive switch communication connection, inductive switch are used for responding to the place ahead and presume whether the distance exists and shelter from, and when touch-sensitive screen control chip received shelter from the signal, control liquid crystal touch screen start-up display standard colour temperature color card, when touch-sensitive screen control chip received shelter from the signal and disappear, control liquid crystal touch screen delay settlement time shut-down.
Through adopting above-mentioned technical scheme, inductive switch can realize opening automatically when needing the accent colour temperature to and automatic delay closes after transferring the colour temperature, realizes intelligent switch, and is more energy-conserving, avoids the liquid crystal touch screen to be long bright, certainly can also directly set up the switch button.
Optionally, the three primary colors LED lamp group comprises a white light LED, a red light LED and a blue light LED, and the three current driving output ends of the dimming controller respectively control driving currents of the white light LED, the red light LED and the blue light LED.
By adopting the technical scheme, the three-primary-color LED lamp group adopts the combination of the white light LED, the red light LED and the blue light LED, adopts the combination of the LEDs with different colors, such as the combination of the white light and the red and blue LEDs, and realizes the display effect with different color temperatures by respectively controlling the driving currents of the white light, the red light and the blue light LED.
Optionally, the dimming controller is a PWM controller.
By adopting the technical scheme, the PWM controller can realize stepless adjustment of multipath driving current and proportion adjustment of three primary colors, thereby realizing stepless adjustment of color temperature of the three primary color LED lamp group.
Optionally, the liquid crystal touch screen is a pressure sensitive touch screen.
By adopting the technical scheme, the pressure-sensitive touch screen can better sense the outline of the touch surface of the dimming personnel, and provides accurate data input for the follow-up analysis and dimming control of the touch data analysis chip.
An LED power supply control method with a color temperature stepless regulation module adopts an LED power supply with a color temperature stepless regulation module to carry out stepless light regulation on a three-primary-color LED lamp group, and comprises the following steps:
Step 1, a dimming person approaches a touch visual stepless adjustment instruction input panel, a touch screen control chip receives a shielding signal of an inductive switch, and a liquid crystal touch screen is controlled to start up to display a standard color temperature color card;
step 2, after the light-adjusting personnel selects the color temperature adjusting target, pressing the position of the corresponding color temperature adjusting target on the liquid crystal touch screen by a finger;
Step 3, the liquid crystal touch screen senses a touch force area and transmits the touch force area to a touch data analysis chip, the touch data analysis chip extracts a contour area for the touch force area, the contour area is marked as a FIGU, a center point of the FIGU is calculated by adopting a center point extraction algorithm and marked as an O point, the O point is positioned at position data x and y of standard color temperature color card data, and the position data x and y of the O point are transmitted to an instruction generation chip;
Step 4, the instruction generating chip obtains dimming target data based on the position data x and y of the O point, generates stepless dimming instructions corresponding to the dimming target data and stores the stepless dimming instructions in a memory;
step 5, the storage transmits the stepless dimming instruction to the dimming control chip, and the dimming control chip controls the dimming controller to respectively control the driving currents of the different color LED lamps of the three primary color LED lamp groups according to the stepless dimming instruction, so as to realize the color temperature adjustment corresponding to the dimming target data;
and 6, the dimming personnel satisfaction color temperature adjusting result leaves the front area of the touch visual stepless adjusting instruction input panel, the touch screen control chip receives the shielding disappearance of the inductive switch, and the liquid crystal touch screen is controlled to delay the shutdown of the set time.
Optionally, in step 6, if the dimming person is not satisfied with the color temperature adjustment result, the finger slides on the liquid crystal touch screen, step 3, step 4 and step 5 are repeated, the dimming person checks the display effect of the tricolor LED lamp set, and if the dimming person is satisfied with the color temperature adjustment result, step 6 is repeated.
By adopting the technical scheme, the sliding type color temperature adjusting form is optimal for the dimming feeling of the dimming personnel, the change of the display effect is most intuitive, and the dimming personnel can be assisted to obtain the optimal dimming effect.
Optionally, when the finger of the light modulator slides on the liquid crystal touch screen, repeating the step 3 and the step 4, generating a stepless light modulation instruction by the instruction generating chip every 0.1 second, repeating the step 5 every time the stepless light modulation instruction is generated, and executing color temperature adjustment once within 0.1 second.
By adopting the technical scheme, the response of the liquid crystal touch screen, the operation of the touch data analysis chip, the operation of the instruction generation chip and the control of the dimming controller all require time, and after the time is accumulated and optimized, the total time is required to be lower than 0.2 seconds, so that the time delay of the completion of the color temperature adjustment is smaller, and the feeling of stepless color temperature adjustment is improved.
Optionally, in step 4, the stepless dimming command is Ia, ib and Ic, ia is a driving current of the white LED, ib is a driving current of the red LED, and Ic is a driving current of the blue LED.
Optionally, in step 3, the touch data analysis chip extracts the contour area from the touch force area by using a binary image edge detection algorithm.
In summary, the present invention includes at least one of the following beneficial technical effects:
The invention can provide a LED power supply with a color temperature stepless regulation module and a control method, a standard color temperature color card can intuitively display all color temperature effects, when a light-regulating person checks and regulates light, the color temperature regulation can be realized by only carrying out finger control pressing, the liquid crystal touch screen senses the outline of a touch surface, then the outline data of the touch surface is transmitted to a touch data analysis chip, the touch data analysis chip extracts the central point of the touch data, the central point actually represents the light-regulating target of the light-regulating person, the light-regulating target data is transmitted to an instruction generation chip, the instruction generation chip generates a stepless light-regulating instruction according to the light-regulating target data, the light-regulating controller controls the LED power supply to output a driving current control instruction of a plurality of color LEDs of the three-primary-color LED lamp group 100, the light-regulating controller can realize stepless color temperature regulation corresponding to the light-regulating target data, the whole input process can not exceed 0.2 seconds, the observation of the light-regulating person can instantly complete the regulation of the designated color temperature, if the effect is poor, the color temperature can be regulated for multiple times, and the finger can press on the liquid crystal touch screen to slide until the color temperature is satisfied and the three-regulating color temperature is displayed; the technical problem that the LED lamp can realize stepless adjustment of the color temperature according to the requirement is conveniently and rapidly realized, and a user can accurately adjust the color temperature to be optimal according to personal preference or specific environmental requirement, so that the optimal illumination effect is achieved; the scene adaptability is improved, different color temperatures can be adopted to adapt to the environment for some design occasions needing special illumination effects under different occasions, and fine color temperature adjustment can be performed; the color temperature adjusting efficiency is greatly improved, and the flexibility of the color temperature adjusting of the LED lamp is improved.
Drawings
FIG. 1 is a schematic diagram of the connection principle of an electrical device of an LED power supply with a color temperature stepless regulation module;
fig. 2 is a schematic diagram of an electrical device connection principle of an LED power touch visual stepless adjustment instruction input panel with a color temperature stepless adjustment module according to the present invention.
Reference numerals illustrate: 1. a touch visual stepless regulation instruction input panel; 11. a liquid crystal touch screen; 12. a touch data analysis chip; 13. an instruction generating chip; 14. a memory; 15. a touch screen control chip; 16. an inductive switch; 2. a color temperature stepless adjusting module; 21. a dimming controller; 22. a dimming control chip; 3. an LED power supply; 100. three primary colors LED lamp group; 1001. a white light LED; 1002. a red LED; 1003. blue light LED.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment of the invention discloses an LED power supply with a color temperature stepless adjusting module and a control method.
Referring to fig. 1 and 2, embodiment 1, an LED power supply with a color temperature stepless adjustment module, which includes a touch visual stepless adjustment instruction input panel 1, a color temperature stepless adjustment module 2, and an LED power supply 3, the touch visual stepless adjustment instruction input panel 1 includes a liquid crystal touch screen 11 for visually displaying a standard color temperature color card and feeling touch force, a touch data analysis chip 12, an instruction generation chip 13, and a memory 14, the touch data analysis chip 12 is respectively in communication connection with the liquid crystal touch screen 11, the instruction generation chip 13, and the memory 14, the memory 14 is used for storing standard color temperature color card data and stepless dimming instruction data, the touch data analysis chip 12 calculates a touch center point based on the sensed outline of the touch surface, calculates positioning data of the touch center point on the liquid crystal touch screen 11, obtains dimming target data according to the positioning data, and transmits the dimming target data to the instruction generation chip 13, the instruction generation chip 13 generates stepless dimming instructions based on the dimming target data, and stores the memory 14, the color temperature stepless adjustment module 2 includes a dimming controller 21 and a dimming control chip 22, the multi-channel output of the LED power supply 3 is respectively connected with the dimming controller 21 through the controller 21 and the three-channel output of the LED power supply 21 to the stepless dimming control chip 21, and the dimming control chip 21 is respectively in communication with the stepless dimming control chip 21, the dimming control of the dimming control chip is realized, and the dimming control of the dimming control chip 21 is respectively, the dimming control of the dimming control chip is realized, the dimming control of the dimming control chip is respectively, and the dimming control 21 is in communication of the dimming control, and the dimming control is realized.
The touch-control visual stepless regulation command input panel 1 can provide a more visual and simple stepless dimming input experience for dimming personnel, and a traditional stepless regulation switch is generally a knob type, such as common volume regulation, but the stepless regulation is not suitable for the color temperature regulation signal input in practice, because the color temperature regulation is generally formed by mixing two or three LED basic colors, and a single knob type regulation can only provide a control signal of the size and is not suitable for the color temperature regulation;
The liquid crystal touch screen 11 can display a standard color temperature color card, the standard color temperature color card can intuitively display all color temperature effects, when a dimming person views the lamp, the lamp can be realized by only carrying out command pressing, the liquid crystal touch screen 11 senses the outline of the touch surface and then transmits the outline data of the touch surface to the touch data analysis chip 12, the touch data analysis chip 12 can analyze the outline of the sensed touch surface to extract the central point thereof, the central point actually represents the dimming target of the dimming person, the dimming target data is transmitted to the command generation chip 13, the command generation chip 13 can generate stepless dimming commands according to the dimming target data, the stepless dimming commands actually refer to control commands for respectively controlling the dimming controller 21, the dimming controller 21 can control the driving current control instruction of the multi-channel color LEDs output by the LED power supply 3 to the three-primary-color LED lamp set 100, stepless color temperature adjustment corresponding to dimming target data can be realized by executing the stepless dimming instruction by the dimming controller 21, the whole input process is very short in dimming completion time, generally not exceeding 0.2 seconds, for the appearance of a dimming person, the adjustment of the designated color temperature is basically completed instantaneously, if the effect is poor, the adjustment can be carried out for many times, and the gradual color temperature adjustment can be obtained by pressing a finger on the liquid crystal touch screen 11 until the color temperature effect displayed by the three-primary-color LED lamp set 100 is satisfactory;
The technical problem that the LED lamp can realize stepless adjustment of the color temperature according to the requirement is conveniently and rapidly realized, and a user can accurately adjust the color temperature to be optimal according to personal preference or specific environmental requirement, so that the optimal illumination effect is achieved; the scene adaptability is improved, different color temperatures can be adopted to adapt to the environment for some design occasions needing special illumination effects under different occasions, and fine color temperature adjustment can be performed; the color temperature adjusting efficiency is greatly improved, and the flexibility of the color temperature adjusting of the LED lamp is improved.
In embodiment 2, the touch-control visual stepless adjustment instruction input panel 1 further comprises a touch screen control chip 15 and a sensing switch 16, wherein the touch screen control chip 15 is in communication connection with the sensing switch 16, the sensing switch 16 is used for sensing whether shielding exists in a front set distance, when the touch screen control chip 15 receives a shielding signal, the liquid crystal touch screen 11 is controlled to start up and display a standard color temperature color card, and when the touch screen control chip 15 receives the shielding signal to disappear, the liquid crystal touch screen 11 is controlled to delay the shutdown of a set time.
The inductive switch 16 can realize automatic opening when the color temperature needs to be regulated, and automatic delay closing after the color temperature is regulated, so that intelligent switching is realized, energy is saved, the liquid crystal touch screen 11 is prevented from being long and bright, and a switch key can be directly arranged.
In embodiment 3, the tricolor LED lamp set 100 includes a white LED1001, a red LED1002 and a blue LED1003, and three current driving outputs of the dimming controller 21 control driving currents of the white LED1001, the red LED1002 and the blue LED1003, respectively.
The three-primary-color LED lamp set 100 adopts a combination of a white LED1001, a red LED1002 and a blue LED1003, adopts a combination of LEDs of different colors, such as a combination of white light and red blue LED, and realizes a display effect of different color temperatures by respectively controlling driving currents of the white light, the red light and the blue LED.
In embodiment 4, the dimming controller 21 is a PWM controller.
The PWM controller can realize stepless adjustment of the multipath driving current, and realize proportional adjustment of the three primary colors, thereby realizing stepless adjustment of the color temperature of the three primary color LED lamp set 100.
In embodiment 5, the liquid crystal touch panel 11 is a pressure-sensitive touch panel.
The pressure-sensitive touch screen can better sense the outline of the touch surface of the dimming personnel, and provides accurate data input for the subsequent analysis of dimming control by the touch data analysis chip 12.
Embodiment 6, a method for controlling an LED power supply with a color temperature stepless adjustment module, which uses an LED power supply with a color temperature stepless adjustment module to stepless adjust light for a three-primary-color LED lamp set 100, includes the following steps:
Step 1, a dimming person approaches to a touch visual stepless adjustment instruction input panel 1, a touch screen control chip 15 receives a shielding signal of an inductive switch 16 and controls a liquid crystal touch screen 11 to start up to display a standard color temperature color card;
step 2, after the light modulator selects a color temperature adjusting target, pressing the position of the liquid crystal touch screen 11 corresponding to the color temperature adjusting target by a finger;
step 3, the liquid crystal touch screen 11 senses the touch force area and transmits the touch force area to the touch data analysis chip 12, the touch data analysis chip 12 extracts the outline area of the touch force area and marks the outline area as a figure, a center point of the figure is calculated by adopting a center point extraction algorithm and marked as an O point, the O point is positioned at the position data x and y of the standard color temperature color card data, and the position data x and y of the O point are transmitted to the instruction generation chip 13;
step 4, the command generating chip 13 obtains dimming target data based on the position data x, y of the O point, generates a stepless dimming command corresponding to the dimming target data, and stores the stepless dimming command in the memory 14;
step 5, the memory 14 transmits the stepless dimming command to the dimming control chip 22, and the dimming control chip 22 controls the dimming controller 21 to respectively control the driving currents of the different color LED lamps of the three primary color LED lamp group 100 according to the stepless dimming command, so as to realize the color temperature adjustment corresponding to the dimming target data;
And 6, the dimming personnel satisfaction color temperature adjusting result leaves the front area of the touch visual stepless adjusting instruction input panel 1, the touch screen control chip 15 receives the shielding disappearance of the inductive switch 16, and the liquid crystal touch screen 11 is controlled to delay the shutdown of the set time.
In embodiment 7, in step 6, if the dimming person is not satisfied with the color temperature adjustment result, the finger is located on the liquid crystal touch screen 11 and slides, and steps 3, 4 and 5 are repeated, and the dimming person checks the display effect of the three-primary-color LED lamp set 100, and if the dimming person is satisfied with the color temperature adjustment result, step 6 is repeated.
In practice, the sliding type color temperature adjusting form is optimal for the dimming feeling of the dimming personnel, the change of the display effect is most intuitive, and the dimming personnel can be assisted to obtain the optimal dimming effect.
In embodiment 8, when the finger of the light adjuster slides on the liquid crystal touch screen 11, the steps 3 and 4 are repeated, the command generating chip 13 generates the stepless light adjusting command every 0.1 second, and each time the stepless light adjusting command is generated, the step 5 is repeated, and the color temperature adjustment is performed once within 0.1 second.
The response of the liquid crystal touch screen 11, the operation of the touch data analysis chip 12, the operation of the instruction generation chip 13 and the control of the dimming controller 21 all require time, and after the time is integrated and optimized, the total time is required to be lower than 0.2 seconds, so that the time delay of the completion of the color temperature adjustment is smaller, and the feeling of stepless color temperature adjustment is improved.
In embodiment 9, in step 4, the stepless dimming command is Ia, ib and Ic, ia is the driving current of white LED1001, ib is the driving current of red LED1002, and Ic is the driving current of blue LED 1003.
In embodiment 10, in step3, the touch data analysis chip 12 extracts the contour region from the touch force region by using a binary image edge detection algorithm.
The above embodiments are not intended to limit the scope of the present invention, and therefore: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (3)
1. An LED power supply with a stepless color temperature adjustment module, characterized in that: the system comprises a touch visual stepless regulation instruction input panel (1), a color temperature stepless regulation module (2) and an LED power supply (3), wherein the touch visual stepless regulation instruction input panel (1) comprises a liquid crystal touch screen (11) for visually displaying a standard color temperature color card and feeling touch force, a touch data analysis chip (12), an instruction generation chip (13) and a memory (14), the touch data analysis chip (12) is respectively in communication connection with the liquid crystal touch screen (11), the instruction generation chip (13) and the memory (14), the memory (14) is used for storing the standard color temperature color card data and the stepless regulation instruction data, the touch data analysis chip (12) calculates a touch center point based on the sensed outline of the touch surface, calculates positioning data of the touch center point on the liquid crystal touch screen (11), obtains dimming target data according to the positioning data, and transmits the dimming target data to the instruction generation chip (13), the instruction generation chip (13) generates stepless instructions based on the dimming target data, and stores the stepless instructions in the memory (14), the color temperature regulation module (2) comprises a controller (21) and a control chip (22) which is respectively connected with a plurality of channels of dimming lamps (100) through the LED power supply units (22) and a dimming control module (22), the method comprises the steps of obtaining stepless dimming instructions stored in a memory (14), wherein a dimming control chip (22) is in control connection with a dimming controller (21), and the dimming controller (21) is controlled to respectively control an LED power supply (3) to respectively control the dimming action of the dimming controller (21) according to the stepless dimming instructions so as to realize stepless color temperature adjustment corresponding to dimming target data;
The touch visual stepless regulation instruction input panel (1) further comprises a touch screen control chip (15) and a sensing switch (16), wherein the touch screen control chip (15) is in communication connection with the sensing switch (16), the sensing switch (16) is used for sensing whether shielding exists in a front set distance, when the touch screen control chip (15) receives a shielding signal, the liquid crystal touch screen (11) is controlled to start up to display a standard color temperature color card, and when the touch screen control chip (15) receives the shielding signal to disappear, the liquid crystal touch screen (11) is controlled to delay the shutdown of a set time;
the three-primary-color LED lamp group (100) comprises a white light LED (1001), a red light LED (1002) and a blue light LED (1003), and three current driving output ends of the dimming controller (21) respectively control driving currents of the white light LED (1001), the red light LED (1002) and the blue light LED (1003);
The dimming controller (21) is a PWM controller.
2. The LED power supply with a color temperature stepless adjustment module of claim 1, wherein: the liquid crystal touch panel (11) is a pressure-sensitive touch panel.
3. The LED power supply control method with the color temperature stepless adjusting module is characterized by comprising the following steps of: the use of the LED power supply with a stepless color temperature adjustment module of claim 1 for stepless dimming of a tricolor LED lamp set (100), comprising the steps of:
Step 1, a dimming person approaches to a touch visual stepless adjustment instruction input panel (1), a touch screen control chip (15) receives a shielding signal of an inductive switch (16) and controls a liquid crystal touch screen (11) to start up to display a standard color temperature color card;
Step 2, after a light-adjusting person selects a color temperature adjusting target, pressing the position of the corresponding color temperature adjusting target on the liquid crystal touch screen (11) by a finger;
Step 3, the liquid crystal touch screen (11) senses a touch force area and transmits the touch force area to the touch data analysis chip (12), the touch data analysis chip (12) extracts a contour area for the touch force area, the contour area is marked as a FIGU, a center point of the FIGU is calculated by adopting a center point extraction algorithm and marked as an O point, the O point is positioned at position data x and y of standard color temperature color card data, and the position data x and y of the O point are transmitted to the instruction generation chip (13);
step 4, the command generating chip (13) obtains dimming target data based on the position data x and y of the O point, generates stepless dimming commands corresponding to the dimming target data and stores the stepless dimming commands in the memory (14);
Step 5, the memory (14) transmits the stepless dimming instruction to the dimming control chip (22), and the dimming control chip (22) controls the dimming controller (21) to respectively control the driving currents of the different color LED lamps of the three-primary-color LED lamp group (100) according to the stepless dimming instruction, so as to realize the color temperature adjustment corresponding to the dimming target data;
Step 6, the dimming personnel satisfaction color temperature adjusting result leaves the front area of the touch visual stepless adjusting instruction input panel (1), the touch screen control chip (15) receives the shielding disappearance of the inductive switch (16) and controls the liquid crystal touch screen (11) to delay the shutdown of the set time;
In the step 6, if the dimming personnel is not satisfied with the color temperature adjusting result, the finger is positioned on the liquid crystal touch screen (11) to slide, the step 3, the step 4 and the step 5 are repeated, the dimming personnel checks the display effect of the three-primary-color LED lamp group (100), and if the dimming personnel is satisfied with the color temperature adjusting result, the step 6 is repeated;
when the finger of the light-adjusting person slides on the liquid crystal touch screen (11), repeating the step 3 and the step 4, generating a stepless light-adjusting instruction every 0.1 second by the instruction generating chip (13), repeating the step 5 every time the stepless light-adjusting instruction is generated, and executing color temperature adjustment once within 0.1 second;
in step 4, the stepless dimming command is Ia, ib and Ic, ia is the driving current of the white LED (1001), ib is the driving current of the red LED (1002), and Ic is the driving current of the blue LED (1003);
in the step 3, the touch data analysis chip (12) adopts a binary image edge detection algorithm to extract the outline area from the touch force area.
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| CN202410361603.8A CN117979491B (en) | 2024-03-28 | 2024-03-28 | LED power supply with color temperature stepless adjusting module and control method |
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| CN117979491A (en) | 2024-05-03 |
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