A simplified main and auxiliary lighting control system

Abstract

This utility model discloses a simplified main and auxiliary lighting control system, including a constant voltage input, a voltage regulator circuit, and a control chip U2. The constant voltage input includes a first main line and a second main line, with multiple lamps cascaded between the first and second main lines. Each lamp includes a main lamp with cool white light, a main lamp with warm white light, and a sub-lamp. Resistors R1, R2, and R3 are connected in series with each of the main lamps. The voltage regulator circuit includes a voltage regulator chip U1, whose VIN terminal is connected to the first main line. The sixth pin of the control chip U2 is connected to the voltage regulator circuit. All user operation commands are received, parsed, and converted into corresponding control signals (switching commands, multi-channel PWM signals) by the control chip U2 and output to the driver chip for execution. The system is simple and stable to use.

Description

Technical Field

[0001] This utility model relates to the field of lighting control systems, and in particular to a simplified main and auxiliary lighting control system. Background Technology

[0002] With the increasing use of lighting in daily life, the requirements for the color and brightness of lighting have also increased. However, existing lighting includes cool white light, warm white light, and sub-lights (such as yellow light and colored light (such as GRB lights)).

[0003] However, how to precisely control the combination or independent control of individual lights has always been a challenge in the lighting system control industry, involving the demand for cascaded products for main and auxiliary lights, dimming and color adjustment.

[0004] 1. When the control system is more complex, its cost will also increase.

[0005] 2. When the control system is simple, more chips are needed to adjust the lights. Utility Model Content

[0006] The main purpose of this invention is to propose a simplified main and auxiliary lighting control system, which aims to improve the existing lighting system, realize the control of main and auxiliary lights, and thus improve the ease of use and operability of the lights.

[0007] To achieve the above objectives, this utility model proposes a simplified main and auxiliary lighting control system, comprising:

[0008] Constant voltage power input, wherein the constant voltage power input includes a first main line and a second main line.

[0009] Multiple lamps are cascaded between the first main line and the second main line.

[0010] The lamp body includes a main lamp with cool white light, a main lamp with warm white light, and sub-lamp.

[0011] The lamp body sub-lamp is in constant-on mode. Multiple lamp bodies are cascaded in parallel between the second main lines, and their color temperature and brightness can be controlled and adjusted. Multiple lamp body outputs are connected in parallel between the second main lines, meaning the lamp body sub-lamp is in off output mode.

[0012] The main light cool white light, the main light warm white light and the sub-light are respectively connected in series with resistors R1, R2 and R3;

[0013] A voltage regulator circuit, comprising a voltage regulator chip U1, wherein the VIN terminal of the voltage regulator chip U1 is connected to the first main line.

[0014] Control chip U2, the sixth pin of which is connected to the voltage regulator circuit;

[0015] The first pin of the control chip U2 is connected to the switch J2 to control the brightness of the corresponding lamp.

[0016] The sixth pin of the control chip U2 is connected to the switch J1 to switch the lamp body on or off;

[0017] The main light's cool white light is connected in series with a first sampling control circuit, which is connected to the seventh pin of the control chip U2.

[0018] The main light warm white light is connected in series with a second sampling control circuit, which is connected to the third pin of the control chip U2;

[0019] The sub-lamp is connected in series with a third sampling control circuit, which is connected to the fifth pin of the control chip U2;

[0020] The Vout terminal of the voltage regulator chip U1 is connected to the sixth pin of the control chip U2.

[0021] The advantages of this application are:

[0022] 1. Control each lamp separately: With independent circuit control, the main lamp cool white light, the main lamp warm white light and the sub-lamp can be controlled. The sub-lamp is always on. When the main lamp is on, the sub-lamp is off. The color temperature and brightness of the main lamp cool white light and the main lamp warm white light can be adjusted.

[0023] 2. PWM dimming: Brightness adjustment is achieved by changing the duty cycle of the PWM signal of the driving power transistor switch through the built-in logic of the control chip U2, thereby changing the length of time the lamp is on.

[0024] 3. Color temperature switching is simple; the control chip U2 can simultaneously adjust the relative brightness ratio of cool white light and warm white light. When warm light is needed, reduce the brightness of the cool light or increase the brightness of the warm light.

[0025] 4. The constant current drive of the voltage regulator chip U1 ensures that each LED string operates under a set constant current. This is achieved by the voltage regulator chip U1 sampling the voltage (CS) of the current sampling resistor in the detection circuit and feeding it back to the control chip U2 for adjustment. This is safer and provides more stable brightness than directly changing the voltage to drive the LEDs, and effectively reduces flicker.

[0026] 5. All user operation commands to the control chip U2 are received, parsed, and converted into corresponding control signals (switching commands, multi-channel PWM signals) and output to the driver chip for execution, making it simple and stable to use. Attached Figure Description

[0027] Figure 1 This is the circuit diagram for the control system. Detailed Implementation

[0028] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0029] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0031] like Figure 1 As shown, a simplified main and auxiliary lighting control system includes:

[0032] Constant voltage input, the constant voltage input including a first main line and a second main line.

[0033] Multiple lamps are connected in parallel between the first main line and the second main line.

[0034] The lamp body includes a main lamp with cool white light, a main lamp with warm white light, and sub-lamp.

[0035] The main light cool white light, the main light warm white light and the sub-light are respectively connected in series with resistors R1, R2 and R3;

[0036] A voltage regulator circuit, comprising a voltage regulator chip U1, wherein the VIN terminal of the voltage regulator chip U1 is connected to the first main line.

[0037] Control chip U2, the sixth pin of which is connected to the voltage regulator circuit;

[0038] The first pin of the control chip U2 is connected to the switch J2 to control the brightness of the corresponding lamp.

[0039] The sixth pin of the control chip U2 is connected to the switch J1 to switch the lamp body on or off;

[0040] The main light's cool white light is connected in series with a first sampling control circuit, which is connected to the seventh pin of the control chip U2.

[0041] The main light warm white light is connected in series with a second sampling control circuit, which is connected to the third pin of the control chip U2;

[0042] The sub-lamp is connected in series with a third sampling control circuit, which is connected to the fifth pin of the control chip U2;

[0043] The Vout terminal of the voltage regulator chip U1 is connected to the sixth pin of the control chip U2.

[0044] The advantages of this application are:

[0045] 1. Control each lamp separately: With independent circuit control, the main lamp cool white light, the main lamp warm white light and the sub-lamp can be controlled. The sub-lamp is always on. When the main lamp is on, the sub-lamp is off. The color temperature and brightness of the main lamp cool white light and the main lamp warm white light can be adjusted.

[0046] 2. PWM dimming: Brightness adjustment is achieved by changing the duty cycle of the PWM signal of the driving power transistor switch through the built-in logic of the control chip U2, thereby changing the length of time the lamp is on.

[0047] 3. Color temperature switching is simple; the control chip U2 can simultaneously adjust the relative brightness ratio of cool white light and warm white light. When warm light is needed, reduce the brightness of the cool light or increase the brightness of the warm light.

[0048] 4. The constant current drive of the voltage regulator chip U1 ensures that each LED string operates under a set constant current. This is achieved by the voltage regulator chip U1 sampling the voltage (CS) of the current sampling resistor in the detection circuit and feeding it back to the control chip U2 for adjustment. This is safer and provides more stable brightness than directly changing the voltage to drive the LEDs, and effectively reduces flicker.

[0049] 5. All user operation commands to the control chip U2 are received, parsed, and converted into corresponding control signals (switching commands, multi-channel PWM signals) and output to the driver chip for execution, making it simple and stable to use.

[0050] Specifically, a capacitor C2 is connected in series between the Vout terminal of the voltage regulator chip U1 and the second main line.

[0051] Specifically, the voltage regulator circuit includes a resistor R4 and a capacitor C1;

[0052] One end of the resistor R4 is connected to the first main line of the first main line, and the other end is connected to the Vin terminal of the voltage regulator chip U1.

[0053] A capacitor C1 is connected in parallel between the GND terminal of the voltage regulator chip U1 and the second main line.

[0054] Capacitors C1 and C2 are used to filter the power input. Their main function is to filter out high-frequency noise and interference on the power line, stabilize the input voltage (energy storage), and thus achieve the effect of large capacitor filtering low frequency and small capacitor filtering high frequency.

[0055] Reduce flickering issues.

[0056] Specifically, the first sampling control circuit includes a transistor Q3 and a resistor R9 connected in series between the second main line and the seventh pin of the control chip U2;

[0057] A resistor R11 is connected in parallel between transistor Q3 and resistor R9, and the other end of resistor R11 is connected to the second main line.

[0058] Specifically, the second sampling control circuit includes a transistor Q2 and a resistor R8 connected in series between the second main line and the third pin of the control chip U2;

[0059] A resistor R10 is connected in parallel between the transistor Q2 and the resistor R8, and the other end of the resistor R10 is connected to the second main line.

[0060] Specifically, the third sampling control circuit includes a transistor Q1 and a resistor R7 connected in series between the second main line and the fifth pin of the control chip U2;

[0061] A resistor R9 is connected in parallel between the transistor Q1 and the resistor R7, and the other end of the resistor R9 is connected to the second main line.

[0062] Specifically, transistors Q1, Q2, and Q3 act as high-speed electronic switches, directly connected in series in the corresponding LED string circuits. They receive PWM drive signals from U2 and quickly turn on (ON) and off (OFF), thereby precisely controlling the average current flowing through the corresponding LED string (i.e., adjusting the brightness).

[0063] The internal circuitry of the chip generates high and low level signals with corresponding duty cycles and stronger driving capabilities at the output terminal (OUT) based on the control signal, which are used to drive the power transistors (Q1, Q2, Q3).

[0064] Specifically, a resistor R6 is provided between the switch J1 and the eighth pin of the control chip U2;

[0065] A capacitor C3 is connected in series between the switch J1 and the second main line. (This enables filtering and adjustment of the predetermined color temperature via resistance.)

[0066] Specifically, capacitors C5 and C6 are connected in parallel between the second pin and the second main line of the control chip U2.

[0067] Specifically, a resistor R5 is provided between the switch J1 and the first pin of the control chip U2.

[0068] A capacitor C4 is provided between the resistor R5 and the second main line.

[0069] Specifically, capacitors C5 and C6 provide a clean, stable, and low-impedance local power supply to the control chip U2, absorbing instantaneous current fluctuations generated during chip operation and preventing these fluctuations from affecting chip operation or being conducted to the power bus to interfere with other parts. The GND marking emphasizes good grounding.

[0070] Specifically, the voltage regulator chip is a linear regulator 78L05;

[0071] The control chip U2 is model CA51F551.

[0072] The CA51F551 series chips are 8-bit microcontrollers based on the 1T 8051 core. Typically, they operate 10 times faster than traditional 8051 chips, offering superior performance. They feature built-in 8K Flash program memory, allowing for multiple reprogramming options, greatly simplifying user development. In addition to retaining the basic features of traditional 8051 chips, they also integrate TouchKey, 16-bit PWM, 5-bit DAC, UART, and I / O pins. 2 C. Features include an RGB LED cascade controller and low-voltage detection (LVD) modules. It supports three power-saving modes: IDLE, STOP, and low-speed operation to suit applications with varying power consumption requirements. Its powerful functionality and superior anti-interference performance make it widely applicable in various home lighting, home audio touch control, home appliance touch control, Bluetooth speakers, table lamps and bathroom mirror lights, and landscape and ambient lighting strips.

[0073] The 78L05 linear regulator is a three-terminal positive voltage regulator capable of outputting up to 100mA of current. Its internal current-limiting and thermal shutdown characteristics make it virtually unaffected by overload. When used in a Zener diode-resistor combination, it effectively increases output impedance while reducing quiescent current.

[0074] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A simplified main and auxiliary lighting control system, characterized in that, include: Constant voltage input, wherein the constant voltage input includes a first main line and a second main line. Multiple lamps are cascaded between the first main line and the second main line. The lamp body includes a main lamp with cool white light, a main lamp with warm white light, and sub-lamp. The lamp body sub-lamp is in constant-on mode. Multiple lamp bodies are cascaded in parallel between the second main lines, and their color temperature and brightness can be controlled and adjusted. Multiple lamp body outputs are connected in parallel between the second main lines, meaning the lamp body sub-lamp is in off output mode. The main light cool white light, the main light warm white light and the sub-light are respectively connected in series with resistors R1, R2 and R3; A voltage regulator circuit, comprising a voltage regulator chip U1, wherein the VIN terminal of the voltage regulator chip U1 is connected to the first main line. Control chip U2, the sixth pin of which is connected to the voltage regulator circuit; The first pin of the control chip U2 is connected to the switch J2 to control the brightness of the corresponding lamp. The sixth pin of the control chip U2 is connected to the switch J1 to switch the lamp body on or off; The main light's cool white light is connected in series with a first sampling control circuit, which is connected to the seventh pin of the control chip U2. The main light warm white light is connected in series with a second sampling control circuit, which is connected to the third pin of the control chip U2; The sub-lamp is connected in series with a third sampling control circuit, which is connected to the fifth pin of the control chip U2; The Vout terminal of the voltage regulator chip U1 is connected to the sixth pin of the control chip U2.

2. The simplified main and auxiliary lighting control system as described in claim 1, characterized in that: A capacitor C2 is connected in parallel between the Vout terminal of the voltage regulator chip U1 and the second main line.

3. The simplified main and auxiliary lighting control system as described in claim 2, characterized in that: The voltage regulator circuit includes a resistor R4 and a capacitor C1; One end of the resistor R4 is connected to the first main line of the first main line, and the other end is connected to the Vin terminal of the voltage regulator chip U1. A capacitor C1 is connected in parallel between the GND terminal of the voltage regulator chip U1 and the second main line.

4. The simplified main and auxiliary lighting control system as described in claim 1, characterized in that: The first sampling control circuit includes a transistor Q3 and a resistor R9 connected in series between the second main line and the seventh pin of the control chip U2; A resistor R11 is connected in parallel between the transistor Q3 and the resistor R9, and the other end of the resistor R11 is connected to the second main line.

5. The simplified main and auxiliary lighting control system as described in claim 1, characterized in that: The second sampling control circuit includes a transistor Q2 and a resistor R8 connected in series between the second main line and the third pin of the control chip U2; A resistor R10 is connected in parallel between the transistor Q2 and the resistor R8, and the other end of the resistor R10 is connected to the second main line.

6. The simplified main and auxiliary lighting control system as described in claim 1, characterized in that: The third sampling control circuit includes a transistor Q1 and a resistor R7 connected in series between the second main line and the fifth pin of the control chip U2; A resistor R9 is connected in parallel between the transistor Q1 and the resistor R7, and the other end of the resistor R9 is connected to the second main line.

7. The simplified main and auxiliary lighting control system as described in claim 1, characterized in that: A resistor R6 is provided between the eighth pin of the switch J1 and the control chip U2; A capacitor C3 is connected in series between the switch J1 and the second main line.

8. The simplified main and auxiliary lighting control system as described in claim 7, characterized in that: Capacitors C5 and C6 are connected in parallel between the second pin and the second main line of the control chip U2.

9. The simplified main and auxiliary lighting control system as described in claim 8, characterized in that: A resistor R5 is provided between the first pin of the switch J1 and the control chip U2. A capacitor C4 is provided between the resistor R5 and the second main line.

10. The simplified main and auxiliary lighting control system as described in claim 1, characterized in that: The voltage regulator chip is a linear regulator 78L05; The control chip U2 is model CA51F551.

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