A control circuit for regulating the brightness of a luminaire by means of a rotary encoder

Abstract

The utility model relates to a control circuit that adjusts the brightness of lamps and lanterns through rotary encoder, including singlechip, control module, lighting module, LED power module, control module is by rotary encoder, resistance one, resistance two, resistance three, resistance four, electric capacity one, electric capacity two is constituteed, lighting module is by lamp pearl one, lamp pearl two, lamp pearl three, lamp pearl four, lamp pearl five, lamp pearl six, lamp pearl seven, lamp pearl eight, lamp pearl nine, lamp pearl ten, lamp pearl eleven, lamp pearl twelve, lamp pearl thirteen, lamp pearl fourteen, lamp pearl fifteen, lamp pearl sixteen, lamp pearl seventeen, lamp pearl eighteen, lamp pearl nineteen, lamp pearl twenty constitutes, and LED power module is by boost chip, resistance five, resistance six, electric capacity three, electric capacity four, diode one, inductance one constitutes. The utility model discloses reasonable structure design, compared with switch regulation, the encoder has more advantage under the condition of free brightness adjustment, and the stability is better, and the operation is more convenient and simple.

Description

Technical Field

[0001] This utility model belongs to the field of lighting circuits, specifically relating to a control circuit that adjusts the brightness of a lamp through a rotary encoder. Background Technology

[0002] In numerous lighting applications, luminaires need to be able to adjust their brightness to enhance environmental comfort and visual appeal for different scenarios. Generally, adjustable brightness luminaires use LEDs (light-emitting diodes) as the light source. LEDs offer the advantage of brightness adjustment; by controlling the output current, different brightness levels can be achieved. Switch-type brightness adjustment is more suitable for situations where adjustments are made to a fixed set of brightness levels, and it cannot provide finer-grained brightness control. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a control circuit for adjusting the brightness of a table lamp by means of a rotary encoder.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A control circuit for adjusting the brightness of a lamp via a rotary encoder includes a microcontroller, a control module, a lighting module, and an LED power supply module. The control module consists of a rotary encoder, resistors 1, 2, 3, and 4, and capacitors 1 and 2. Pin A of the rotary encoder is connected to one end of resistor 2; pin B is connected to one end of resistor 4; pin C, one end of capacitor 1, and one end of capacitor 2 are grounded; pins D and E of the rotary encoder are grounded; the other end of capacitor 1 is connected to one end of resistor 1; the other end of capacitor 2 is connected to one end of resistor 3; the other end of resistor 1 is connected to network label BAT; and resistors 3 and 4 are connected to the LED power supply module. The other end connects to the network label BAT, and the other ends of resistors two and four connect to the microcontroller. The lighting module consists of LEDs 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20. The negative terminal of LED 1 connects to the positive terminal of LED 2, the negative terminal of LED 3 connects to the positive terminal of LED 4, the negative terminal of LED 5 connects to the positive terminal of LED 6, the negative terminal of LED 7 connects to the positive terminal of LED 8, the negative terminal of LED 9 connects to the positive terminal of LED 10, and the negative terminal of LED 11... Connect LED 12 to the positive terminal; LED 13 to the negative terminal; LED 14 to the positive terminal; LED 15 to the negative terminal; LED 16 to the positive terminal; LED 17 to the negative terminal; LED 18 to the positive terminal; LED 19 to the negative terminal; LED 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19 to the network label LED+; LED 2, 4, 6, 8, 10, 12, 14, 16, and 18 to the negative terminal. The negative terminal of LED bead 20 is connected to network label LED-; the LED power supply module consists of a boost chip, resistor 5, resistor 6, capacitor 3, capacitor 4, diode 1, and inductor 1. Pin 1 of the boost chip and the positive terminal of diode 1 are connected to one end of inductor 1. Pins 2 and 6 of the boost chip, one end of resistor 6, one end of capacitor 3, and one end of capacitor 4 are grounded. Pin 3 of the boost chip and one end of resistor 5 are connected to the other end of resistor 6. Pins 4 and 5 of the boost chip, the other end of inductor 1, and the other end of capacitor 4 are connected to network label BAT. The other end of capacitor 3, the negative terminal of diode 1, and the other end of resistor 5 are connected to network label LED+.

[0005] Preferably, the boost chip is model PW5300.

[0006] Compared with the prior art, this utility model has the following advantages and effects: With its reasonable structural design, the encoder has a greater advantage in terms of free brightness adjustment compared to switch adjustment, and it is also more stable and easier to operate. Attached Figure Description

[0007] Figure 1 The circuit diagram of the control module is shown in the example.

[0008] Figure 2 The circuit diagram for the lighting module is shown in the example.

[0009] Figure 3 The circuit diagram of the LED power supply module is shown in the example.

[0010] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. Detailed Implementation

[0011] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0012] Example.

[0013] like Figures 1-3 As shown, the control circuit includes a microcontroller, a control module, a lighting module, and an LED power supply module. The control module consists of a rotary encoder SW1, resistors R1, R2, R3, and R4, and capacitors C1 and C2. Pin A of the rotary encoder SW1 is connected to one end of resistor R2; pin B of the rotary encoder SW1 is connected to one end of resistor R4; pin C of the rotary encoder SW1, one end of capacitor C1, and one end of capacitor C2 are grounded; pins D and E of the rotary encoder SW1 are grounded; the other end of capacitor C1 is connected to one end of resistor R1; the other end of capacitor C2 is connected to one end of resistor R3; the other end of resistor R1 is connected to network label BAT; the other end of resistor R3 is connected to network label BAT; and the other ends of resistors R2 and R4 are connected to the microcontroller. In this embodiment, the encoder control module uses the rotary encoder SW1 to control the brightness mode between 10% and 100% PWM. The encoder channel is controlled by a double row of female terminals, and the appropriate current ratio is adjusted by rotating encoder SW1 to change the brightness of the LED beads.

[0014] like Figure 2As shown, the lighting module consists of LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10, LED11, LED12, LED13, LED14, LED15, LED16, LED17, LED18, LED19, and LED20. The negative terminal of LED1 is connected to the positive terminal of LED2; the negative terminal of LED3 is connected to the positive terminal of LED4; the negative terminal of LED5 is connected to the positive terminal of LED6; the negative terminal of LED7 is connected to the positive terminal of LED8; the negative terminal of LED9 is connected to the positive terminal of LED10; the negative terminal of LED11 is connected to the positive terminal of LED12; and the negative terminal of LED13 is connected to the positive terminal of LED12. The negative terminal of LED 14 (LED14) is connected to the positive terminal of LED 15 (LED15). The negative terminal of LED 16 (LED16) is connected to the positive terminal of LED 17 (LED17). The negative terminal of LED 18 (LED18) is connected to the positive terminal of LED 20 (LED19). The positive terminals of LED 11 (LED1), 3 (LED3), 5 (LED5), 7 (LED7), 9 (LED9), 11 (LED11), and 13 (LED13) are also connected to the positive terminal of LED 13. LED15 (positive), LED17 (positive), LED19 (positive) - connected to network label LED+; LED2 (negative), LED4 (negative), LED6 (negative), LED8 (negative), LED10 (negative), LED12 (negative), LED14 (negative), LED16 (negative), LED18 (negative), LED20 (negative) - connected to network label LED-.

[0015] like Figure 3As shown, the LED power supply module provides a stable power supply for the LED light source, improving the stability of the lamp when adjusting the current. The LED power supply module consists of a boost chip U1, resistors R5 and R6, capacitors C3 and C4, diode D1, and inductor L1. Pin 1 of boost chip U1 and the anode of diode D1 are connected to one end of inductor L1. Pins 2 and 6 of boost chip U1, one end of resistor R6, one end of capacitor C3, and one end of capacitor C4 are grounded. Pin 3 of boost chip U1 and one end of resistor R5 are connected to the other end of resistor R6. Pins 4 and 5 of boost chip U1, the other end of inductor L1, and the other end of capacitor C4 are connected to network label BAT. The other end of capacitor C3, the cathode of diode D1, and the other end of resistor R5 are connected to network label LED+. In this embodiment, the boost chip U1 is a PW5300.

[0016] In this embodiment, the rotary encoder SW1 rotates the grating disk, causing the internal photoelectric sensor to generate periodic pulse signals to control the current ratio and on / off status of the LED light source. Specifically, the rotary encoder SW1 determines the rotation direction through the phase difference output from its A and B signal pins, while the microcontroller determines the mode and controls the output current to the LED based on the signals transmitted from the encoder. a. When rotating clockwise, the level change of pin A precedes that of pin B (B is low when A is triggered by the rising edge). b. When rotating counterclockwise, the level change of pin B precedes that of pin A (B is high when A is triggered by the rising edge).

[0017] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A control circuit for adjusting the brightness of a lamp via a rotary encoder, comprising a microcontroller, a control module, a lighting module, and an LED power supply module, characterized in that: The control module consists of a rotary encoder, resistor 1, resistor 2, resistor 3, resistor 4, capacitor 1, and capacitor 2. The rotary encoder pin A is connected to one end of resistor 2, the rotary encoder pin B is connected to one end of resistor 4, the rotary encoder pin C, one end of capacitor 1, and one end of capacitor 2 are grounded, the rotary encoder pins D and E are grounded, the other end of capacitor 1 is connected to one end of resistor 1, the other end of capacitor 2 is connected to one end of resistor 3, the other end of resistor 1 is connected to network label BAT, the other end of resistor 3 is connected to network label BAT, and the other ends of resistor 2 and resistor 4 are connected to the microcontroller. The lighting module consists of LED chips 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20. The negative terminal of LED chip 1 is connected to the positive terminal of LED chip 2; the negative terminal of LED chip 3 is connected to the positive terminal of LED chip 4; the negative terminal of LED chip 5 is connected to the positive terminal of LED chip 6; the negative terminal of LED chip 7 is connected to the positive terminal of LED chip 8; the negative terminal of LED chip 9 is connected to the positive terminal of LED chip 10; the negative terminal of LED chip 11 is connected to the positive terminal of LED chip 12; and the negative terminal of LED chip 13 is connected to the positive terminal of LED chip 14. LED 15 (negative) connects to LED 16 (positive); LED 17 (negative) connects to LED 18 (positive); LED 19 (negative) connects to LED 20 (positive); LED 1, LED 3, LED 5, LED 7, LED 9, LED 11, LED 13, LED 15, LED 17, and LED 19 (positive) connect to network label LED+; LED 2, LED 4, LED 6, LED 8, LED 10, LED 12, LED 14, LED 16, LED 18, and LED 20 (negative) connect to network label LED-. The LED power supply module consists of a boost converter chip, resistors 5 and 6, capacitors 3 and 4, diode 1, and inductor 1. Pin 1 of the boost converter chip and the positive terminal of diode 1 are connected to one end of inductor 1. Pins 2 and 6 of the boost converter chip, one end of resistor 6, one end of capacitor 3, and one end of capacitor 4 are grounded. Pin 3 of the boost converter chip and one end of resistor 5 are connected to the other end of resistor 6. Pins 4 and 5 of the boost converter chip, the other end of inductor 1, and the other end of capacitor 4 are connected to network label BAT. The other end of capacitor 3, the negative terminal of diode 1, and the other end of resistor 5 are connected to network label LED+.

2. The control circuit for adjusting the brightness of a lamp via a rotary encoder according to claim 1, characterized in that: The boost chip is model PW5300.

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