Touch control type dimming and color adjusting circuit and dimming lighting lamp

Abstract

The utility model provides a touch control type light and color adjusting circuit. The touch control type light and color adjusting circuit comprises a touch control circuit, a main illumination driving circuit, an atmosphere lamp driving circuit and a power taking circuit. The touch control circuit comprises a main control chip, a dimming touch control assembly and a switch assembly. The dimming touch control assembly comprises three touch control areas and a dimming touch strip and is used for receiving a user touch control signal. The switch assembly controls on-off of the main illuminating lamp and the atmosphere lamp. And the main control chip respectively controls the color temperature combination proportion of the main illuminating lamp, the mixed light color proportion of the atmosphere lamp and the brightness of the main illuminating lamp and the atmosphere lamp by outputting PWM (Pulse Width Modulation) signals with different duty ratios according to the received touch signal. In addition, the touch control type dimming and color adjusting circuit is further provided with a dimming depth indicator lamp, a main lighting state indicator lamp and an atmosphere lamp state indicator lamp, so that a user can visually know the working state and the dimming depth of the lamp, the user experience is improved, and misoperation is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of lighting fixtures, and in particular to a touch-controlled dimming and color adjustment circuit and a dimming lighting fixture. Background Art

[0002] With the rapid development of LED lighting technology, LED lamps have become widely used in home, commercial, and industrial lighting due to their significant advantages, such as high efficiency, energy saving, and environmental protection. In the intelligent control of LED lamps, touch-sensitive dimming technology has gained market favor due to its ease of operation. However, existing LED touch-sensitive dimming lamps generally suffer from a single function, providing only basic touch dimming functions and lacking feedback on user operations, resulting in a poor user experience. Furthermore, due to the lamps' relatively limited functionality, they often lack the ability to adjust light color, making it difficult to meet users' diverse lighting needs in specific scenarios.

[0003] For example, reference document CN201510515094.0 discloses a touch-sensitive LED dimming circuit. After the system is powered on, the dimming mode is selected by configuring the high and low levels of the CS1, CS2, and CS3 pins of the capacitive touch chip. When a finger touches the touch panel, a tiny capacitance change occurs between the touch sensing electrode and the finger. This change is detected by the capacitive touch chip U1. If the touch duration is less than 550ms, it is considered a click event, and the PWM signal output terminal OUT outputs a high or low level, controlling the on / off of the LED load. If the touch duration is greater than 550ms, it is considered a long press event, and the PWM signal output terminal OUT outputs a square wave signal. By varying the duty cycle of the square wave, the LED brightness is continuously adjusted. In the stepless dimming mode with brightness memory, after a long press to adjust the brightness, the brightness value at the time of release is memorized and used as the initial brightness the next time the touch is pressed. However, this solution has limited functionality, lacks feedback on user operations, and lacks the ability to adjust light color, making it difficult to meet users' diverse lighting needs in specific scenarios. Utility Model Content

[0004] The purpose of the present disclosure is to overcome the deficiencies in the prior art and to provide a touch-controlled dimming and color adjustment circuit with feedback indication and a dimming lighting fixture.

[0005] The purpose of this disclosure is achieved through the following technical solutions:

[0006] A touch-type dimming and color adjustment circuit comprises a touch control circuit, a main lighting drive circuit, an atmosphere light drive circuit and a power supply circuit, wherein the power supply circuit is used to provide electric energy to the touch control circuit.

[0007] The main lighting driving circuit is used to drive the cold light source and the warm light source to emit light of different color temperatures.

[0008] The ambient light driving circuit is used to drive the red, green and blue light sources to emit light of mixed light colors.

[0009] The touch control circuit includes a main control chip, a dimming touch component and a switch component. The dimming touch component includes a first touch area, a second touch area, a third touch area and a dimming touch strip. The first touch area, the second touch area and the third touch area are spaced apart on the dimming touch strip. The first touch area, the second touch area and the third touch area are respectively connected to the first sliding signal terminal, the second sliding signal terminal and the third sliding signal terminal of the main control chip.

[0010] The switch assembly includes a main lighting touch switch and an atmosphere light touch switch, and the main lighting touch switch and the atmosphere light touch switch are respectively connected to the main lighting switch signal terminal and the atmosphere light switch signal terminal of the main control chip.

[0011] The cold light PWM output end and the warm light PWM output end of the main control chip are respectively connected to the cold light PWM signal receiving end and the warm light PWM signal receiving end of the main lighting drive circuit, and the red light PWM output end, the green light PWM output end and the blue light PWM output end of the main control chip are respectively connected to the red light PWM signal receiving end, the green light PWM signal receiving end and the blue light PWM signal receiving end of the atmosphere light drive circuit.

[0012] In one embodiment, the dimming touch component further includes a dimming depth indicator light, which is disposed on the dimming touch strip and connected to an indicator light signal terminal of the main control chip.

[0013] In one embodiment, there are multiple dimming depth indicator lights, which are arranged at intervals on the dimming touch bar, and each of the dimming depth indicator lights is connected to an indicator light signal terminal of the main control chip.

[0014] In one embodiment, the switch assembly further includes a main lighting status indicator light and an ambient light status indicator light. The main lighting status indicator light is arranged adjacent to the main lighting light touch switch, and the ambient light status indicator light is arranged adjacent to the ambient light touch switch. The main lighting status indicator light is connected to the main lighting status signal end of the main control chip, and the ambient light status indicator light is connected to the ambient light status signal end of the main control chip.

[0015] In one embodiment, the main lighting drive circuit includes a first main lighting control circuit and a second main lighting control circuit, the first main lighting control circuit includes a cold light dimming chip and a first resistor, the cold light PWM output end of the main control chip is connected to the cold light PWM signal receiving end of the cold light dimming chip through the first resistor, and the second main lighting control circuit includes a warm light dimming chip and a second resistor, the warm light PWM output end of the main control chip is connected to the warm light PWM signal receiving end of the warm light dimming chip through the second resistor.

[0016] In one embodiment, the atmosphere light driving circuit includes a first atmosphere light control circuit, a second atmosphere light control circuit and a third atmosphere light control circuit, the red light PWM output end of the main control chip is connected to the red light PWM signal receiving end of the first atmosphere light control circuit, the green light PWM output end of the main control chip is connected to the green light PWM signal receiving end of the second atmosphere light control circuit, and the blue light PWM output end of the main control chip is connected to the blue light PWM signal receiving end of the third atmosphere light control circuit.

[0017] In one embodiment, the first atmosphere light control circuit includes a third resistor and a first electronic switch tube. The red light PWM output end of the main control chip is connected to the control end of the first electronic switch tube through the third resistor. The first end of the first electronic switch tube is used to connect to the red light LED lamp, and the second end of the first electronic switch tube is grounded.

[0018] In one embodiment, the second atmosphere light control circuit includes a fourth resistor and a second electronic switch tube. The green light PWM output end of the main control chip is connected to the control end of the second electronic switch tube through the fourth resistor. The first end of the second electronic switch tube is used to connect to the green light LED lamp, and the second end of the second electronic switch tube is grounded.

[0019] In one embodiment, the third atmosphere light control circuit includes a fifth resistor and a third electronic switch tube. The blue light PWM output end of the main control chip is connected to the control end of the third electronic switch tube through the fifth resistor. The first end of the third electronic switch tube is used to connect to the blue light LED lamp, and the second end of the third electronic switch tube is grounded.

[0020] In one embodiment, the power supply circuit includes a linear regulator, the input end of the linear regulator is used to be connected to an external power supply, and the output end of the linear regulator is connected to the power input end of the touch control circuit.

[0021] A dimming lighting fixture comprises the touch-controlled dimming and color adjustment circuit as described in any one of the above items.

[0022] Compared with the prior art, the present disclosure has at least the following advantages:

[0023] 1. In the aforementioned touch-sensitive dimming and color adjustment circuit, when a user lightly touches the main light touch switch and the ambient light touch switch, the main control chip recognizes the touch signal and outputs level signals through the main light switch signal terminal and the ambient light switch signal terminal to control the on / off status of the main light and the ambient light, respectively. Furthermore, when the user touches the main light touch switch and the ambient light touch switch for a duration greater than two seconds, the main control chip outputs PWM signals with different duty cycles through the PWM signal output terminal to respectively change the color temperature combination ratio of the main light and the mixed light color of the ambient light, thereby causing the main light to output light of different color temperatures and the ambient light to output mixed light colors of different colors. Furthermore, when the user touches the dimming touch bar and slides between the three touch areas, the main control chip recognizes the continuous touch signals of the dimming touch bar and controls the PWM output terminal to output corresponding duty cycle PWM signals to change the brightness of the main light and the ambient light.

[0024] 2. The touch-sensitive dimming and color adjustment circuit also includes a main lighting status indicator light, an ambient light status indicator light, and multiple dimming depth indicator lights. This helps users intuitively understand the working status of the main lighting and ambient light through the main lighting status indicator light and the ambient light status indicator light. At the same time, the dimming depth of the main lighting and ambient light can be understood through the dimming depth indicator light, thereby enhancing the user experience and avoiding the inconvenience caused by misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A schematic structural diagram of a touch-sensitive dimming and color adjustment circuit according to an embodiment;

[0027] Figure 2 for Figure 1 The circuit diagram of the touch control circuit shown;

[0028] Figure 3 for Figure 1 The circuit diagram of the main lighting drive circuit shown;

[0029] Figure 4 for Figure 1 The circuit diagram of the ambient light driving circuit shown;

[0030] Figure 5 for Figure 1The circuit diagram of the power taking circuit shown;

[0031] Figure 6 This is a schematic diagram of the dimming touch strip forming a long strip of touch area during PCB layout. DETAILED DESCRIPTION

[0032] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0036] like Figures 1 to 5 As shown, a touch-sensitive dimming and color adjustment circuit 10 according to an embodiment of the present disclosure includes a touch control circuit 100 , a main lighting driving circuit 200 , an ambient light driving circuit 300 and a power supply circuit 400 . The power supply circuit 400 is used to provide power to the touch control circuit 100 .

[0037] The main lighting driving circuit 200 is used to drive the cool light source and the warm light source to emit light of different color temperatures.

[0038] The ambient light driving circuit 300 is used to drive the red, green and blue light sources to emit light of mixed colors.

[0039] The touch control circuit 100 includes a main control chip U1, a dimming touch component and a switch component. The dimming touch component includes a first touch area K1, a second touch area K2, a third touch area K3 and a dimming touch strip. The first touch area K1, the second touch area K2 and the third touch area K3 are spaced apart on the dimming touch strip. The first touch area K1, the second touch area K2 and the third touch area K3 are respectively connected to the first sliding signal terminal PIN19, the second sliding signal terminal PIN18 and the third sliding signal terminal PIN17 of the main control chip U1.

[0040] The switch assembly includes a main lighting touch switch K5 and an ambient light touch switch K4, which are connected to the main lighting switch signal terminal PIN6 and the ambient light switch signal terminal PIN5 of the main control chip U1 respectively.

[0041] The cold light PWM output terminal PWM-C and the warm light PWM output terminal PWM-W of the main control chip U1 are respectively connected to the cold light PWM signal receiving terminal PWM-C1 and the warm light PWM signal receiving terminal PWM-W1 of the main lighting driving circuit 200, and the red light PWM output terminal PWM-R, the green light PWM output terminal PWM-G and the blue light PWM output terminal PWM-B of the main control chip U1 are respectively connected to the red light PWM signal receiving terminal PWM-R1, the green light PWM signal receiving terminal PWM-G1 and the blue light PWM signal receiving terminal PWM-B1 of the ambient light driving circuit 300.

[0042] In this embodiment, when the user briefly touches the main lighting touch switch K5, the main control chip U1 detects a brief touch signal, and then the main lighting switch signal terminal PIN6 of the main control chip U1 outputs a high-level signal. At the same time, the cold light PWM output terminal PWM-C and the warm light PWM output terminal PWM-W of the main control chip U1 respectively output PWM signals. After the cold light PWM signal receiving terminal PWM-C1 and the warm light PWM signal receiving terminal PWM-W1 of the main lighting drive circuit 200 receive the PWM signals, the cold light source and the warm light source respectively output light with cold and warm color temperatures, and the mixed light is output as the main lighting light; when the user touches the main lighting touch switch When the duration of K5 is greater than two seconds, the main control chip U1 detects a long touch signal. At the same time, the cold light PWM output terminal PWM-C and the warm light PWM output terminal PWM-W of the main control chip U1 respectively output PWM signals with different duty cycles to the cold light PWM signal receiving terminal PWM-C1 and the warm light PWM signal receiving terminal PWM-W1, and controls the output current of the cold light source and the warm light source by adjusting the duty cycle of the two PWM signals, thereby achieving continuous adjustment of the color temperature of the main lighting. The color temperature of the light source varies within a range of 2700K to 6500K. When the user stops touching the main lighting touch switch K5, the color temperature of the main lighting will be fixed at the current value.

[0043] Furthermore, when the user briefly touches the atmosphere light touch switch K4, the main control chip U1 detects a brief touch signal, and then the atmosphere light switch signal terminal PIN5 of the main control chip U1 outputs a high-level signal. At the same time, the red light PWM output terminal PWM-R, the green light PWM output terminal PWM-G and the blue light PWM output terminal PWM-B of the main control chip U1 respectively output PWM signals to the red light PWM signal receiving terminal PWM-R1, the green light PWM signal receiving terminal PWM-G1 and the blue light PWM signal receiving terminal PWM-B1 of the atmosphere light driving circuit 300, so that the red light, green light and blue light sources respectively output red, green and blue light, and after mixing, they are used as color Ambient light output; when the user touches the ambient light touch switch K4 for more than two seconds, the main control chip U1 detects a long touch signal, and at the same time, the red light PWM output terminal PWM-R, the green light PWM output terminal PWM-G and the blue light PWM output terminal PWM-B of the main control chip U1 respectively output PWM signals with different duty cycles. After the red light PWM signal receiving terminal PWM-R1, the green light PWM signal receiving terminal PWM-G1 and the blue light PWM signal receiving terminal PWM-B1 of the ambient light driving circuit 300 receive PWM signals with different duty cycles, the three light sources of red, green and blue emit light in different proportions and mix to form colorful ambient light.

[0044] Specifically, when the user stops touching the atmosphere light touch switch K4, the red light PWM output terminal PWM-R, the green light PWM output terminal PWM-G and the blue light PWM output terminal PWM-B of the main control chip U1 output the current duty cycle PWM signal, and the red light PWM signal receiving terminal PWM-R1, the green light PWM signal receiving terminal PWM-G1 and the blue light PWM signal receiving terminal PWM-B1 of the atmosphere light driving circuit 300 receive the current duty cycle PWM signal, so that the atmosphere light stops at the current light color and maintains light output; if the user touches the atmosphere light touch switch K4 again, the main control chip U1 continues to output PWM signals with different duty cycles according to the current light color state, so that the atmosphere light continues to cycle out different light colors based on the current light color, and stays at the current light color after releasing the atmosphere light touch switch K4 again.

[0045] Furthermore, the dimming touch strip is a long strip touch area composed of the first touch area K1, the second touch area K2 and the third touch area K3 when the PCB is laid out. For details, see Figure 6When a user slides their finger across the dimming touch bar while the main lighting driver circuit 200 and the ambient light driver circuit 300 are in operation, the main control chip U1 detects the touch signal through the dimming touch bar and identifies the location of the touch signal through the first touch area K1, the second touch area K2, and the third touch area K3. The main control chip U1 then controls the cold light PWM output terminal PWM-C, the warm light PWM output terminal PWM-W, the red light PWM output terminal PWM-R, the green light PWM output terminal PWM-G, and the blue light PWM output terminal PWM-B to output PWM signals with corresponding duty cycles. This changes the output current of the main lighting driver circuit 200 and the ambient light driver circuit 300, thereby changing the brightness of the main lighting and ambient light. The duty cycle of the PWM signal output by each PWM output terminal can vary between 0% and 100%, allowing the user to adjust the brightness of the main lighting and ambient light outputs from off to full brightness simply by touching and sliding on the touch area.

[0046] In the aforementioned touch-sensitive dimming and color adjustment circuit 10, when a user lightly touches the main light touch switch K5 and the ambient light touch switch K4, the main control chip U1 recognizes the touch signal and outputs level signals through the main light switch signal terminal PIN6 and the ambient light switch signal terminal PIN5 to control the on / off states of the main light and the ambient light, respectively. Furthermore, when the user touches the main light touch switch K5 and the ambient light touch switch K4 for a duration greater than two seconds, the main control chip U1 outputs PWM signals with different duty cycles through the PWM signal output terminal to respectively change the color temperature combination ratio of the main light and the mixed light color of the ambient light, thereby causing the main light to output light of different color temperatures and the ambient light to output mixed light colors of different colors. Furthermore, when the user touches the dimming touch bar and slides between the three touch areas, the main control chip U1 recognizes the continuous touch signal from the dimming touch bar and controls the PWM output terminal to output corresponding duty cycle PWM signals to change the brightness of the main light and the ambient light.

[0047] like Figure 2 and Figure 3 As shown, in one embodiment, the dimming touch component also includes a dimming depth indicator light, which is provided on the dimming touch bar and connected to the indicator light signal terminal of the main control chip U1. In this embodiment, the dimming depth indicator light is used to intuitively display the current dimming depth or brightness level. When the user touches and slides on the dimming touch bar, the main control chip U1 detects the touch position based on the received touch signal and calculates the required dimming depth level based on the touch signal. Then, the main control chip U1 outputs a control signal to the dimming depth indicator light through the indicator light signal terminal and lights up the dimming depth indicator light corresponding to the dimming depth, so that the user can intuitively understand the dimming depth through the dimming depth indicator light.

[0048] like Figure 2 and Figure 3 As shown, in one embodiment, there are multiple dimming depth indicator lights, and the multiple dimming depth indicator lights are spaced apart on the dimming touch bar, and each dimming depth indicator light is connected to an indicator light signal terminal of the main control chip U1. In this embodiment, each dimming depth indicator light corresponds to a specific dimming depth range. When the user touches the dimming touch bar and slides between the three touch areas, the main control chip U1 detects the touch position and then calculates the current dimming depth based on the touch signal. Since each dimming depth indicator light corresponds to a dimming depth range, when the user touches a position between the three touch areas, the main control chip U1 outputs a control signal to the corresponding dimming depth indicator light through the indicator light signal terminal, so that the corresponding dimming depth indicator light is illuminated. As the user slides on the dimming touch bar, different dimming depth indicators will be illuminated or extinguished in turn, thereby forming an intuitive visual feedback, which helps the user accurately know the current dimming status.

[0049] like Figure 2 and Figure 3 As shown, in one embodiment, the switch assembly further includes a main lighting status indicator D2 and an ambient light status indicator D1. The main lighting status indicator D2 is positioned adjacent to the main lighting touch switch K5, and the ambient light status indicator D1 is positioned adjacent to the ambient light touch switch K4. The main lighting status indicator D2 is connected to the main lighting status signal terminal PIN13 of the main control chip U1, while the ambient light status indicator D1 is connected to the ambient light status signal terminal PIN12 of the main control chip U1. In this embodiment, the main lighting status indicator D2 and the ambient light status indicator D1 are used to visually display the current status of the main lighting and ambient light. When a user touches the main lighting touch switch K5 or the ambient light touch switch K4 to turn the corresponding light on or off, the main control chip U1 detects the touch signal and outputs a control signal to the corresponding status indicator via the main lighting status signal terminal PIN13 or the ambient light status signal terminal PIN12, causing the main lighting status indicator D2 and the ambient light status indicator D1 to illuminate or extinguish, thereby providing the user with intuitive feedback indicating whether the main lighting or ambient light is currently on or off. In addition, when the user adjusts the brightness of the main light or the ambient light through the dimming touch bar, if the main light or the ambient light is in deep dimming and the brightness is dim, the main lighting status indicator D2 and the ambient light status indicator D1 help the user confirm whether they are in normal working condition.

[0050] like Figure 3As shown, in one embodiment, the main lighting drive circuit 200 includes a first main lighting control circuit and a second main lighting control circuit. The first main lighting control circuit includes a cold light dimming chip U2 and a first resistor R1. The cold light PWM output terminal PWM-C of the main control chip U1 is connected to the cold light PWM signal receiving terminal PWM-C1 of the cold light dimming chip U2 through the first resistor R1. The second main lighting control circuit includes a warm light dimming chip U3 and a second resistor R2. The warm light PWM output terminal PWM-W of the main control chip U1 is connected to the warm light PWM signal receiving terminal PWM-W1 of the warm light dimming chip U3 through the second resistor R2. In this embodiment, the cold light dimming chip U2 and the warm light dimming chip U3 are respectively used to receive PWM signals output from the cold light PWM output terminal PWM-C and the warm light PWM output terminal PWM-W of the main control chip U1, and adjust the current output to the cold light source and the warm light source according to the duty cycle of the received PWM signal, thereby controlling the brightness of the cold light source and the warm light source, so that the main lighting lamp can output light of different color temperature and brightness according to the needs of the user to meet the requirements of various lighting scenarios.

[0051] like Figure 4 As shown, in one embodiment, the atmosphere light driving circuit 300 includes a first atmosphere light control circuit, a second atmosphere light control circuit and a third atmosphere light control circuit, the red light PWM output terminal PWM-R of the main control chip U1 is connected to the red light PWM signal receiving terminal PWM-R1 of the first atmosphere light control circuit, the green light PWM output terminal PWM-G of the main control chip U1 is connected to the green light PWM signal receiving terminal PWM-G1 of the second atmosphere light control circuit, and the blue light PWM output terminal PWM-B of the main control chip U1 is connected to the blue light PWM signal receiving terminal PWM-B1 of the third atmosphere light control circuit. In this embodiment, the first atmosphere light control circuit, the second atmosphere light control circuit and the third atmosphere light control circuit are respectively used to receive PWM signals output from the red light PWM output terminal PWM-R, the green light PWM output terminal PWM-G and the blue light PWM output terminal PWM-B of the main control chip U1. The first atmosphere light control circuit, the second atmosphere light control circuit and the third atmosphere light control circuit respectively adjust the current output to the red light source, the green light source and the blue light source according to the duty cycle of the received PWM signal, thereby accurately controlling the brightness of the red light source, the green light source and the blue light source, and by mixing these three colors of light, the atmosphere light can output a variety of mixed light colors of different colors, thereby meeting the user's diverse needs for atmosphere lighting.

[0052] like Figure 4As shown, in one embodiment, the first ambient light control circuit includes a third resistor R24 and a first electronic switch Q1. The red PWM output terminal PWM-R of the main control chip U1 is connected to the control terminal of the first electronic switch Q1 via the third resistor R24. The first terminal of the first electronic switch Q1 is used to connect to the red LED, and the second terminal of the first electronic switch Q1 is grounded. In this embodiment, when the red PWM output terminal PWM-R of the main control chip U1 outputs a high-level signal, the high-level signal flows to the control terminal of the first electronic switch Q1, causing the voltage at the control terminal of the first electronic switch Q1 to exceed its threshold voltage, thereby turning on the first electronic switch Q1 and allowing current to flow, thereby driving the red LED to emit light. When the PWM signal is low, the first electronic switch Q1 is turned off, severing the current loop and extinguishing the red LED. Specifically, by adjusting the duty cycle of the PWM signal, that is, the ratio of the high level to the low level, the average current of the red LED can be controlled, thereby precisely adjusting the brightness of the red LED. At the same time, the third resistor R24 plays a role of current limiting and protection, ensuring that the control end of the first electronic switch tube Q1 will not be damaged due to excessive current.

[0053] In another embodiment, the first electronic switch tube Q1 is an N-channel MOS tube, the first end of the first electronic switch tube Q1 is the drain of the N-channel MOS tube, the second end of the first electronic switch tube Q1 is the source of the N-channel MOS tube, and the control end of the first electronic switch tube Q1 is the gate of the N-channel MOS tube.

[0054] like Figure 4 As shown, in one embodiment, the second ambient light control circuit includes a fourth resistor R25 and a second electronic switch Q2. The green PWM output terminal PWM-G of the main control chip U1 is connected to the control terminal of the second electronic switch Q2 via the fourth resistor R25. The first terminal of the second electronic switch Q2 is used to connect to the green LED, and the second terminal of the second electronic switch Q2 is grounded. In this embodiment, when the green PWM output terminal PWM-G of the main control chip U1 outputs a high-level signal, the high-level signal flows to the control terminal of the second electronic switch Q2, causing the voltage at the control terminal of the second electronic switch Q2 to exceed its threshold voltage, thereby turning on the second electronic switch Q2 and allowing current to flow, thereby driving the green LED to emit light. When the PWM signal is low, the second electronic switch Q2 is turned off, severing the current loop and extinguishing the green LED. Specifically, by adjusting the duty cycle of the PWM signal, that is, the ratio of the high level to the low level, the average current of the green LED can be controlled, thereby precisely adjusting the brightness of the green LED. At the same time, the fourth resistor R25 plays a role of current limiting and protection, ensuring that the control end of the second electronic switch tube Q2 will not be damaged due to excessive current.

[0055] In another embodiment, the second electronic switch tube Q2 is an N-channel MOS tube, the first end of the second electronic switch tube Q2 is the drain of the N-channel MOS tube, the second end of the second electronic switch tube Q2 is the source of the N-channel MOS tube, and the control end of the second electronic switch tube Q2 is the gate of the N-channel MOS tube.

[0056] like Figure 4 As shown in one embodiment, the third ambient light control circuit includes a fifth resistor R26 and a third electronic switch Q3. The blue light PWM output terminal PWM-B of the main control chip U1 is connected to the control terminal of the third electronic switch Q3 via the fifth resistor R26. The first terminal of the third electronic switch Q3 is used to connect to the blue light LED, and the second terminal of the third electronic switch Q3 is grounded. In this embodiment, when the blue light PWM output terminal PWM-B of the main control chip U1 outputs a high-level signal, the high-level signal flows to the control terminal of the third electronic switch Q3, causing the control terminal voltage of the third electronic switch Q3 to exceed its threshold voltage, thereby turning on the third electronic switch Q3 and allowing current to flow, thereby driving the blue light LED to emit light. When the PWM signal is low, the third electronic switch Q3 is turned off, severing the current loop and extinguishing the blue light LED. Specifically, by adjusting the duty cycle of the PWM signal, that is, the ratio of the high level to the low level, the average current of the blue light LED can be controlled, thereby precisely adjusting the brightness of the blue light LED. At the same time, the fifth resistor R26 plays a role of current limiting and protection, ensuring that the control end of the third electronic switch tube Q3 will not be damaged due to excessive current.

[0057] In another embodiment, the third electronic switch tube Q3 is an N-channel MOS tube, the first end of the third electronic switch tube Q3 is the drain of the N-channel MOS tube, the second end of the third electronic switch tube Q3 is the source of the N-channel MOS tube, and the control end of the third electronic switch tube Q3 is the gate of the N-channel MOS tube.

[0058] A dimming lighting fixture includes a touch-controlled dimming and color adjustment circuit 10 as described above. In this embodiment, when a user briefly touches the main lighting touch switch K5, the main control chip U1 detects the brief touch signal, and then the main lighting switch signal terminal PIN6 of the main control chip U1 outputs a high-level signal. At the same time, the cold light PWM output terminal PWM-C and the warm light PWM output terminal PWM-W of the main control chip U1 respectively output PWM signals. After the cold light PWM signal receiving terminal PWM-C1 and the warm light PWM signal receiving terminal PWM-W1 of the main lighting drive circuit 200 receive the PWM signals, the cold light source and the warm light source respectively output light with cold and warm color temperatures, and the mixed light is output as the main lighting light; when the user touches the main lighting touch switch When the duration of K5 is greater than two seconds, the main control chip U1 detects a long touch signal. At the same time, the cold light PWM output terminal PWM-C and the warm light PWM output terminal PWM-W of the main control chip U1 respectively output PWM signals with different duty cycles to the cold light PWM signal receiving terminal PWM-C1 and the warm light PWM signal receiving terminal PWM-W1, and controls the output current of the cold light source and the warm light source by adjusting the duty cycle of the two PWM signals, thereby achieving continuous adjustment of the color temperature of the main lighting. The color temperature of the light source varies within a range of 2700K to 6500K. When the user stops touching the main lighting touch switch K5, the color temperature of the main lighting will be fixed at the current value. Furthermore, when the user briefly touches the atmosphere light touch switch K4, the main control chip U1 detects a brief touch signal, and then the atmosphere light switch signal terminal PIN5 of the main control chip U1 outputs a high-level signal. At the same time, the red light PWM output terminal PWM-R, the green light PWM output terminal PWM-G and the blue light PWM output terminal PWM-B of the main control chip U1 respectively output PWM signals to the red light PWM signal receiving terminal PWM-R1, the green light PWM signal receiving terminal PWM-G1 and the blue light PWM signal receiving terminal PWM-B1 of the atmosphere light driving circuit 300, so that the red light, green light and blue light sources respectively output red, green and blue light, and after mixing, they are used as color Ambient light output; when the user touches the ambient light touch switch K4 for more than two seconds, the main control chip U1 detects a long touch signal, and at the same time, the red light PWM output terminal PWM-R, the green light PWM output terminal PWM-G and the blue light PWM output terminal PWM-B of the main control chip U1 respectively output PWM signals with different duty cycles. After the red light PWM signal receiving terminal PWM-R1, the green light PWM signal receiving terminal PWM-G1 and the blue light PWM signal receiving terminal PWM-B1 of the ambient light driving circuit 300 receive PWM signals with different duty cycles, the three light sources of red, green and blue emit light in different proportions and mix to form colorful ambient light.Specifically, when the user stops touching the ambient light touch switch K4, the red, green, and blue PWM output terminals PWM-R, PWM-G, and PWM-B of the main control chip U1 output the current duty cycle PWM signals. The red, green, and blue PWM signal receiving terminals PWM-R1, PWM-G1, and PWM-B1 of the ambient light driver circuit 300 receive the current duty cycle PWM signals, causing the ambient light to remain at its current light color and maintain light output. If the user touches the ambient light touch switch K4 again, the main control chip U1 continues to output PWM signals with different duty cycles based on the current light color state, causing the ambient light to continue cycling through different light colors based on the current light color. Upon releasing the ambient light touch switch K4 again, the ambient light remains at its current light color. Furthermore, the dimming touch strip is composed of a first touch area K1, a second touch area K2, and a third touch area K3, forming a long strip of touch areas during PCB layout. For details on the specific layout, see [see "Dimmer Touch Strip"]. Figure 6 When a user slides their finger across the dimming touch bar while the main lighting driver circuit 200 and the ambient light driver circuit 300 are in operation, the main control chip U1 detects the touch signal through the dimming touch bar and identifies the location of the touch signal through the first touch area K1, the second touch area K2, and the third touch area K3. The main control chip U1 then controls the cold light PWM output terminal PWM-C, the warm light PWM output terminal PWM-W, the red light PWM output terminal PWM-R, the green light PWM output terminal PWM-G, and the blue light PWM output terminal PWM-B to output PWM signals with corresponding duty cycles. This changes the output current of the main lighting driver circuit 200 and the ambient light driver circuit 300, thereby changing the brightness of the main lighting and ambient light. The duty cycle of the PWM signal output by each PWM output terminal can vary between 0% and 100%, allowing the user to adjust the brightness of the main lighting and ambient light outputs from off to full brightness simply by touching and sliding on the touch area.

[0059] Compared with the prior art, the present disclosure has at least the following advantages:

[0060] 1. In the aforementioned touch-controlled dimming and color adjustment circuit 10, when a user lightly touches the main light touch switch K5 and the ambient light touch switch K4, the main control chip U1 recognizes the touch signal and outputs level signals through the main light switch signal terminal PIN6 and the ambient light switch signal terminal PIN5 to control the on / off states of the main light and ambient light, respectively. Furthermore, when the user touches the main light touch switch K5 and the ambient light touch switch K4 for a duration greater than two seconds, the main control chip U1 outputs PWM signals with different duty cycles through the PWM signal output terminal to respectively change the color temperature combination ratio of the main light and the mixed light color of the ambient light, thereby causing the main light to output light of different color temperatures and the ambient light to output mixed light colors of different colors. Furthermore, when the user touches the dimming touch bar and slides between the three touch areas, the main control chip U1 recognizes the continuous touch signal from the dimming touch bar and controls the PWM output terminal to output corresponding duty cycle PWM signals to change the brightness of the main light and ambient light.

[0061] 2. The touch-sensitive dimming and color adjustment circuit 10 further includes a main lighting status indicator light D2, an ambient light status indicator light D1, and a plurality of dimming depth indicator lights, which facilitate the user to intuitively understand the working status of the main lighting lamp and the ambient light through the main lighting status indicator light D2 and the ambient light status indicator light D1. At the same time, the user can understand the dimming depth of the main lighting lamp and the ambient light through the dimming depth indicator light, thereby enhancing the user experience and avoiding the inconvenience caused by misoperation.

[0062] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the disclosed patent shall be determined by the appended claims.

Claims

1. A touch-sensitive dimming and color adjustment circuit, characterized in that: It includes a touch control circuit, a main lighting drive circuit, an ambient light drive circuit and a power supply circuit, wherein the power supply circuit is used to provide power to the touch control circuit; The main lighting driving circuit is used to drive the cold light source and the warm light source to emit light of different color temperatures; The ambient light driving circuit is used to drive the red, green and blue light sources to emit light of mixed colors; The touch control circuit includes a main control chip, a dimming touch component and a switch component. The dimming touch component includes a first touch area, a second touch area, a third touch area and a dimming touch strip. The first touch area, the second touch area and the third touch area are spaced apart on the dimming touch strip. The first touch area, the second touch area and the third touch area are respectively connected to the first sliding signal terminal, the second sliding signal terminal and the third sliding signal terminal of the main control chip. The switch assembly includes a main lighting touch switch and an atmosphere light touch switch, and the main lighting touch switch and the atmosphere light touch switch are respectively connected to the main lighting switch signal terminal and the atmosphere light switch signal terminal of the main control chip; The cold light PWM output end and the warm light PWM output end of the main control chip are respectively connected to the cold light PWM signal receiving end and the warm light PWM signal receiving end of the main lighting drive circuit, and the red light PWM output end, the green light PWM output end and the blue light PWM output end of the main control chip are respectively connected to the red light PWM signal receiving end, the green light PWM signal receiving end and the blue light PWM signal receiving end of the atmosphere light drive circuit.

2. The touch-sensitive dimming and color adjustment circuit according to claim 1, wherein: The dimming touch component further includes a dimming depth indicator light, which is arranged on the dimming touch strip and connected to the indicator light signal terminal of the main control chip.

3. The touch-sensitive dimming and color adjustment circuit according to claim 2, wherein: There are multiple dimming depth indicator lights, which are arranged at intervals on the dimming touch bar. Each of the dimming depth indicator lights is connected to an indicator light signal terminal of the main control chip.

4. The touch-sensitive dimming and color adjustment circuit according to claim 1, wherein: The switch assembly also includes a main lighting status indicator light and an atmosphere light status indicator light. The main lighting status indicator light is arranged adjacent to the main lighting light touch switch, and the atmosphere light status indicator light is arranged adjacent to the atmosphere light touch switch. The main lighting status indicator light is connected to the main lighting status signal end of the main control chip, and the atmosphere light status indicator light is connected to the atmosphere light status signal end of the main control chip.

5. The touch-sensitive dimming and color adjustment circuit according to claim 1, wherein: The main lighting drive circuit includes a first main lighting control circuit and a second main lighting control circuit. The first main lighting control circuit includes a cold light dimming chip and a first resistor. The cold light PWM output end of the main control chip is connected to the cold light PWM signal receiving end of the cold light dimming chip through the first resistor. The second main lighting control circuit includes a warm light dimming chip and a second resistor. The warm light PWM output end of the main control chip is connected to the warm light PWM signal receiving end of the warm light dimming chip through the second resistor.

6. The touch-sensitive dimming and color adjustment circuit according to claim 1, wherein: The atmosphere light driving circuit includes a first atmosphere light control circuit, a second atmosphere light control circuit and a third atmosphere light control circuit. The red light PWM output end of the main control chip is connected to the red light PWM signal receiving end of the first atmosphere light control circuit, the green light PWM output end of the main control chip is connected to the green light PWM signal receiving end of the second atmosphere light control circuit, and the blue light PWM output end of the main control chip is connected to the blue light PWM signal receiving end of the third atmosphere light control circuit.

7. The touch-sensitive dimming and color adjustment circuit according to claim 6, wherein: The first atmosphere light control circuit includes a third resistor and a first electronic switch tube. The red light PWM output end of the main control chip is connected to the control end of the first electronic switch tube through the third resistor. The first end of the first electronic switch tube is used to connect to the red light LED lamp, and the second end of the first electronic switch tube is grounded.

8. The touch-sensitive dimming and color adjustment circuit according to claim 6, wherein: The second atmosphere light control circuit includes a fourth resistor and a second electronic switch tube. The green light PWM output end of the main control chip is connected to the control end of the second electronic switch tube through the fourth resistor. The first end of the second electronic switch tube is used to connect to the green light LED lamp, and the second end of the second electronic switch tube is grounded.

9. The touch-sensitive dimming and color adjustment circuit according to claim 6, wherein: The third atmosphere light control circuit includes a fifth resistor and a third electronic switch tube. The blue light PWM output end of the main control chip is connected to the control end of the third electronic switch tube through the fifth resistor. The first end of the third electronic switch tube is used to connect to the blue light LED lamp, and the second end of the third electronic switch tube is grounded.

10. A dimming lighting fixture, characterized in that: It comprises the touch-controlled dimming and color adjustment circuit as described in any one of claims 1 to 9.

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