Multi-area multi-power multi-color-temperature dimming circuit

Abstract

The utility model relates to a multi-area multi-power multi-color-temperature dimming circuit, which comprises a single chip microcomputer module, a driving power supply, a direct-current step-down power supply module, a light-operated sensing module, a power adjusting module, a color temperature adjusting module, an area control module, an LED load and a factory restoring module which are connected with one another. According to the multi-area, multi-power and multi-color-temperature dimming circuit, through cooperation of the light-operated sensing module, the power adjusting module, the color temperature adjusting module and the LED load, the functions of a single lamp are diversified, one lamp has multiple purposes, large-scale production is facilitated, cost is reduced, efficiency is improved, one lamp adapts to more terminal requirements, the switch-type mechanical adjusting mode is more convenient for household use, and the multi-area, multi-power and multi-color-temperature dimming circuit is suitable for popularization and application. Different scene differentiated applications of terminal clients are satisfied, and the operation is simple, rapid and visual.

Description

Technical Field

[0001] The utility model relates to the technical field of lamps, in particular to a multi-zone, multi-power, and multi-color temperature dimming circuit. Background Art

[0002] With the popularization of LED in the lighting field, single-functional lighting can no longer satisfy consumers; consumers have more demands and scene applications for lighting functions.

[0003] Existing lighting dimming circuits have a single function and can only adjust the temperature of a single color, so their application range is relatively limited. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a multi-zone, multi-power, and multi-color temperature dimming circuit that can realize the diversification of functions of a single lamp and multiple uses of one lamp.

[0005] The utility model is achieved through the following technical solutions:

[0006] A multi-zone, multi-power, and multi-color temperature dimming circuit, comprising

[0007] The single-chip microcomputer module is used to send and receive action instructions for each sub-module;

[0008] The driving power supply is connected to the single-chip microcomputer module through a DC step-down power supply module. The output voltage of the driving power supply is stepped down by the DC step-down power supply module to a DC voltage that can be directly used.

[0009] The light control sensor module is connected to the DC step-down power supply module and the single-chip microcomputer module respectively, and is used to sense the ambient brightness and convert it into data for the single-chip microcomputer module;

[0010] The power regulation module is connected to the driving power supply and realizes different voltage outputs of the driving power supply through resistor voltage division, thus realizing multiple power adjustments of the lamp;

[0011] The color temperature adjustment module is connected to the driving power supply and the single-chip microcomputer module respectively. The driving power supply outputs different voltages through resistor voltage division, thereby achieving multiple color temperature adjustments for the lamp.

[0012] The regional control module is connected to the color temperature adjustment module and the single-chip microcomputer module respectively, and is used to generate a low level and send it to the single-chip microcomputer module to turn on the corresponding MOS channel, thereby realizing the conduction of the MOS channel circuit and controlling the lighting of the lamp;

[0013] The LED load is connected to the regional control module and the color temperature adjustment module respectively, and has two color temperatures, high and low, for achieving different light mixing results.

[0014] Preferably, the single chip microcomputer module adopts TL29537 / SOP20.

[0015] Preferably, the light-controlled sensor module includes a phototransistor, a switch and a current-limiting voltage-divider resistor connected in sequence, and the phototransistor selects a receiving spectrum of 800-1000nm.

[0016] Preferably, the power regulation module includes a three-speed double-pole sliding switch and a sampling resistor connected to a power dimming line.

[0017] Preferably, the color temperature adjustment module includes a three-speed single-row slide switch and a sampling voltage-dividing resistor, which are connected to four pins of the single-chip microcomputer module.

[0018] Preferably, the regional control module includes a four-speed dial switch and eight MOS tube switch circuits, and the four-speed dial switch and the eight MOS tube switch circuits are respectively connected to the pins of the single-chip microcomputer module.

[0019] Preferably, the LED load includes two color temperature LED light sources, high and low.

[0020] In addition, the multi-zone, multi-power, and multi-color temperature dimming circuit also includes a factory reset module connected to the single-chip microcomputer module for restoring the factory settings after a system crash, including a two-speed switch and a current-limiting resistor.

[0021] The beneficial effects of the present invention are: the multi-zone, multi-power, and multi-color temperature dimming circuit can achieve diversified functions of a single lamp through the cooperation of the light control sensor module, the power adjustment module, the color temperature adjustment module and the LED load, so that one lamp can be used for multiple purposes, which is convenient for large-scale production, reduces costs and increases efficiency, and one lamp can adapt to more terminal needs. This type of switch-type mechanical adjustment method is more convenient for home use, which can meet the differentiated applications of different scenarios of end customers and is simple, fast and intuitive to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural block diagram of the multi-zone, multi-power, and multi-color temperature dimming circuit of the present invention;

[0023] Figure 2 This is a circuit schematic diagram of the multi-zone, multi-power, and multi-color temperature dimming circuit of the utility model;

[0024] Figure 3 This is a circuit diagram of the light-controlled sensor module of the present invention;

[0025] Figure 4 This is a circuit diagram of the power regulation module of the present utility model;

[0026] Figure 5 This is a circuit diagram of the color temperature adjustment module of the present utility model;

[0027] Figure 6This is a circuit diagram of the regional control module of the present utility model;

[0028] Figure 7 This is a circuit diagram of the LED load of the present invention;

[0029] Figure 8 This is a circuit schematic diagram of the factory reset module of the present invention. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0031] like Figure 1 The multi-zone, multi-power, and multi-color temperature dimming circuit shown includes a single-chip microcomputer module 1, a driving power supply 2, a DC step-down power supply module 3, a light control sensor module 4, a power adjustment module 6, a color temperature adjustment module 7, a zone control module 8, an LED load 9, and a factory reset module 5.

[0032] Specifically, combined Figure 2 As shown, the MCU module adopts TL29537 / SOP20, which is the control core of the module and receives and processes the action instructions of each sub-module; the driving power supply is connected to the MCU module through a DC step-down power supply module. The driving power supply adopts a dimming constant current power supply. The DC step-down power supply module steps down the output voltage of the driving power supply to a DC voltage that can be directly used through this circuit.

[0033] Combine Figure 3 As shown, the light control sensor module includes a phototransistor PT, a switch K1 and a current-limiting voltage divider resistor R2. The switch K1 manages whether the light control function is turned on. The phototransistor PT receives ambient natural light. The phototransistor PT is selected to only receive the spectrum of 800-1000nm, which exists in natural light. At the same time, it filters out the visible light wavelength (380-800nm) to avoid the influence of the LED lamp's own light on the light control sensor module. It can sense the ambient brightness, that is, the changes in brightness during the day and night, and convert it into data to the single-chip microcomputer module. The single-chip microcomputer module controls the on / off of the lamp to achieve the effect of energy saving and emission reduction.

[0034] Combine Figure 4 As shown, the power regulation module includes a three-speed double-pole sliding switch K2 and sampling resistors R3-R8, which are connected to the power dimming line. By switching different resistance positions through the switch, the voltage value of the power dimming line (0-10V / 1-10V) is controlled by the resistance voltage divider. The power supply outputs different parameters to achieve the purpose of multiple power adjustment of the lamp.

[0035] Combine Figure 5As shown, the color temperature adjustment module includes a three-speed single-row sliding switch K3 and sampling voltage-dividing resistors R9-R11, which are connected to the four pins of the single-chip microcomputer module. Different resistance gears are switched through the three-speed single-row sliding switch K3; different voltage values ​​of the gears are realized by using resistor voltage division. After the voltage value is read by the single-chip microcomputer module, corresponding instruction data is issued to realize two sets of light sources with different color temperature combinations and turn on different brightness. The color temperature obtained by mixing different colors with different brightness is different. For example, when the low color temperature has high brightness and the high color temperature has low brightness, the overall color temperature presented is low.

[0036] Combine Figure 6 As shown, the regional control module includes a four-speed dial switch K4 and eight MOS tube switch circuits. The MOS tube switch circuit includes MOS tubes Q1-Q8, bleeder resistors R14, R16, R18, R20, R22, R24, R26, R28, current limiting resistors R13, R15, R17, R19, R21, R23, R25, R27, and voltage divider resistors R32-R39. The pins of the four-speed dial switch K4 are respectively connected to pins 7, 8, 9, and 10 of the single-chip microcomputer module, respectively controlling the conduction and cutoff of the MOS tubes Q1+Q5, Q2+Q6, Q3+Q7, and Q4+Q8. The four-speed dial switch K4 is turned on and grounded to form a low level. The switch corresponds to the corresponding MOS channel. After the low-level signal is read by the MCU, the corresponding MOS channel is turned on, so that the channel circuit is turned on to form a loop, and the corresponding LED light group lights up.

[0037] Combine Figure 7 As shown, the LED load includes two color temperature LED light sources, high and low. The LED light group contains two color temperature LEDs, L1-LN4 for low color temperature and H1-HN4 for high color temperature. When the low and high color temperatures are illuminated together, they can mix to a neutral color temperature. Moreover, we can achieve mixed light with a smaller number of LEDs. Conventionally, 3000K and 5000K are arranged in the same ratio of 1:1. When illuminated together, the typical color temperature is 4000K. However, our solution is more energy-efficient and can also achieve a 4000K color temperature when the 2700K and 5000K are illuminated together in a ratio of 0.75:1. Alternatively, when illuminated together, the color can be mixed to other color temperatures between 2700-5000K.

[0038] Combine Figure 8 As shown, it includes a two-speed switch K4 and a current-limiting resistor R1. The factory reset module is a protection program function. After a program downtime occurs N times, this function is used to manually repair the program, and the program is restored to the factory default program.

[0039] The working principle of this utility model is as follows:

[0040] A standard SELV dimming power supply on the market is connected to the DC / DC power supply module and LED load. The DC / DC power supply module converts the power supply to 12VDC and 5VDC, which are used to power other modules and components. The power supply output is connected to the LED load to provide operating voltage. The MCU is the module's control core, sending and receiving instructions for each submodule. The light control sensor module switches on and off the light control function. The phototransistor receives ambient natural light and only receives wavelengths between 800-1000nm, which are present in natural light. It also filters out visible light wavelengths (380-800nm) to prevent the LED lamp's own brightness from affecting the light control. The phototransistor senses natural light brightness, i.e., daytime and nighttime brightness changes, and converts this data into data that the MCU controls the lamp's on / off state, achieving energy conservation and emission reduction. The power regulation module, ADJ+ / -, is connected to the power dimming line Dim+ / -, respectively. By switching the resistor positions, the resistor divider controls the voltage of the power dimming line (0-10V / PWM), thereby achieving different power outputs. Parameters, to achieve a variety of power adjustable effects of lamps; the color temperature adjustment module is connected to the 4th pin of the single-chip microcomputer, through the switch to switch different resistance gears, using the resistance voltage divider to achieve different voltage values ​​of the gears, this voltage value is read by the single-chip microcomputer module, and the corresponding instruction data is issued to realize the light source of two sets of color temperature combinations, turn on different brightness, and the color temperature of the mixed colors with different brightness is different. For example, when the low color temperature has high brightness and the high color temperature has low brightness, the overall color temperature presented is a lower color temperature with a warmer sense; the area control module controls the light groups of the four areas through the four-speed dial switch When the dip switch is turned on and grounded, a low level is formed. The switch corresponds to the corresponding MOS channel. After the low level is read by the MCU, the corresponding MOS channel is turned on, the channel circuit is turned on to form a loop, and the corresponding LED light group lights up, which can realize the control of the light groups in four areas; at the same time, the associated R31 resistor is connected to the 5-pin of the MCU. During production, whether the position number R31 in the schematic diagram is mounted or not can realize different power modes. If it is mounted, constant power can be maintained when switching between areas. If it is not mounted, the power of each area can be equally divided, which can adapt to the client's various application scenarios.

[0041] For example, if the whole lamp has 4 zones, set as A / B / C / D, and assuming 24W when fully lit,

[0042] When affixing the R31 position number,

[0043] ABCD areas are all turned on, and the input power of the entire lamp is less than 24W.

[0044] Zone A is turned on separately, and the input power of the whole lamp is 24W.

[0045] AB area is turned on, the input power of the whole lamp is 24W,

[0046] ABC zones are turned on, and the input power of the entire lamp is 24W.

[0047] That is, the input end maintains a constant power state;

[0048] When the R31 number is not affixed,

[0049] When all ABCD zones are turned on, the input power of the entire lamp is still 24W.

[0050] Zone A is turned on separately, and the input power of the whole lamp is 6W (24W divided into four equal parts).

[0051] AB area is turned on, the input power of the whole lamp is 12W,

[0052] ABC zones are turned on, and the input power of the entire lamp is 18W.

[0053] That is, the input end maintains the power equally divided state.

[0054] The LED load contains two kinds of color temperature LEDs, high and low. When the low and high color temperatures are lit at the same time, the light can be mixed into a neutral color temperature. In addition, a smaller number of LEDs can be used to achieve the mixed light effect. Conventionally, the number of 3000K and 5000K is the same at 1:1. When they are lit together, the normal color temperature is 4000K. However, our solution is more energy-efficient. The following combination of 2700K and 5000K can also achieve 4000K when the ratio is 0.75:1. When they are lit together, the color can also be mixed into other color temperatures between 2700-5000K. At the same time, the negative pole of the LED is connected to the MO A resistor is connected in series between the S drain and the resistance value is adjusted to make the current of each LED lamp group tend to be consistent, extending the life of the LED and avoiding unbalanced current of each group, which may cause excessive current and premature damage of individual lamp groups. Due to different batches, the Vf (forward voltage) values ​​of LEDs vary in size. The parallel use characteristic is that the voltage at the beginning and end is the same. Then, when low Vf and high Vf are connected in parallel, the current of low Vf is too large. Large current means high brightness and high heat, affecting its uniformity and life. The series resistor can be used to adjust the current distribution of each group to be uniform.

[0055] The factory reset module is a protection function that allows you to manually repair the program after it crashes after being used N times, and the program will be restored to the factory default state.

[0056] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A multi-zone, multi-power, and multi-color temperature dimming circuit, characterized by: include The single-chip microcomputer module is used to send and receive action instructions for each sub-module; The driving power supply is connected to the single-chip microcomputer module through a DC step-down power supply module. The output voltage of the driving power supply is stepped down by the DC step-down power supply module to a DC voltage that can be directly used. The light control sensor module is connected to the DC step-down power supply module and the single-chip microcomputer module respectively, and is used to sense the ambient brightness and convert it into data for the single-chip microcomputer module; The power regulation module is connected to the driving power supply and realizes different voltage outputs of the driving power supply through resistor voltage division, thus realizing multiple power adjustments of the lamp; The color temperature adjustment module is connected to the driving power supply and the single-chip microcomputer module respectively. The driving power supply outputs different voltages through resistor voltage division, thereby achieving multiple color temperature adjustments for the lamp. The regional control module is connected to the color temperature adjustment module and the single-chip microcomputer module respectively, and is used to generate a low level and send it to the single-chip microcomputer module to turn on the corresponding MOS channel, thereby realizing the conduction of the MOS channel circuit and controlling the lighting of the lamp; The LED load is connected to the regional control module and the color temperature adjustment module respectively, and has two color temperatures, high and low, for achieving different light mixing results.

2. The multi-zone, multi-power, multi-color temperature dimming circuit according to claim 1, characterized in that: The single chip microcomputer module adopts TL29537 / SOP20.

3. The multi-zone, multi-power, multi-color temperature dimming circuit according to claim 1, characterized in that: The light-controlled sensor module includes a phototransistor, a switch and a current-limiting voltage-dividing resistor connected in sequence, and the phototransistor selects a receiving spectrum of 800-1000nm.

4. The multi-zone, multi-power, multi-color temperature dimming circuit according to claim 1, characterized in that: The power regulation module includes a three-speed double-pole slide switch and a sampling resistor connected to a power dimming line.

5. The multi-zone, multi-power, multi-color temperature dimming circuit according to claim 1, characterized in that: The color temperature adjustment module includes a three-speed single-row slide switch and a sampling voltage-dividing resistor, which are connected to the four pins of the single-chip microcomputer module.

6. The multi-zone, multi-power, multi-color temperature dimming circuit according to claim 1, characterized in that: The regional control module includes a four-speed dial switch and eight MOS tube switch circuits, and the four-speed dial switch and the eight MOS tube switch circuits are respectively connected to the pins of the single chip microcomputer module.

7. The multi-zone, multi-power, multi-color temperature dimming circuit according to claim 1, characterized in that: The LED load includes two color temperature LED light sources: high and low.

8. The multi-zone, multi-power, multi-color temperature dimming circuit according to claim 1, characterized in that: The multi-zone, multi-power, and multi-color temperature dimming circuit also includes a factory reset module connected to the single-chip microcomputer module for restoring the system to factory settings after a system crash, including a two-speed switch and a current-limiting resistor.

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