A standby power reduction circuit

Abstract

The utility model discloses a kind of reduce standby power consumption circuit, including MCU module, wireless communication module and power supply module;The MCU module is provided with chip U2, the pin 1 one end of chip U2 is connected with capacitor C2, the pin 4 one end of chip U2 is connected with capacitor C3 and resistance R1, the pin 16 of chip U2 is grounded, the pin 10 of the chip U2 is connected with resistance R2;The power supply module is provided with chip U1, the pin 1 one end of chip U1 is connected with capacitor C1 and resistance R4, the resistance R4 is connected with resistance R3 and resistance R5, the resistance R5 is connected with the collector of triode Q1, the one end of the resistance R4 is connected with the emitter of triode Q1, the base of the triode is connected with resistance R6, the resistance R6 is connected with the pin 12 of chip U1;The wireless communication module is provided with chip U3.VCC voltage during normal operation and standby operation is switched, both ensure the real-time online communication of wireless communication module and reduce the value of standby power consumption.

Description

Technical Field

[0001] This utility model belongs to the field of LED lighting technology, specifically relating to a circuit for reducing standby power consumption. Background Technology

[0002] With the continuous improvement of living standards, intelligent lighting sources with communication functions and remote control capabilities are becoming increasingly popular in the market. In the intelligentization of lighting, the intelligence of the lighting fixtures is the core, as they bear the function of controlling changes in light. In wireless control systems, wireless signal receiving and transmitting processing circuits are typically integrated inside the lighting fixture or driver to enable access to wireless systems, thereby achieving the function of controlling the brightness and color temperature of the light. However, the excessive power consumption of wireless control systems in standby mode leads to non-compliance with energy efficiency standards, hindering the market promotion and application of intelligent lighting fixtures. Utility Model Content

[0003] To solve the aforementioned technical problems, the inventor, based on his extensive experience in the field of LED lighting technology, developed a circuit to reduce standby power consumption.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a circuit for reducing standby power consumption, including an MCU module, a wireless communication module, and a power supply module; the MCU module is provided with a chip U2, the chip U2 is provided with 16 pins, one end of pin 1 of the chip U2 is connected to a capacitor C2, one end of pin 4 of the chip U2 is connected to a capacitor C3 and a resistor R1, pin 16 of the chip U2 is grounded, and pin 10 of the chip U2 is connected to a resistor R2; the power supply module is provided with a chip U1, the chip U1 is provided with pins 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 10 ... Pins 2 and 3, one end of pin 1 of chip U1 is connected to capacitor C1 and resistor R4, resistor R4 is connected to resistors R3 and R5, resistor R5 is connected to the collector of transistor Q1, one end of resistor R4 is connected to the emitter of transistor Q1, the base of transistor is connected to resistor R6, and resistor R6 is connected to pin 12 of chip U1; the wireless communication module is provided with chip U3, chip U3 is provided with 21 pins, and pin 3 of chip U3 is connected to resistor R2 and LED driver dimming port.

[0005] Furthermore, pin 15 of chip U2 is connected to a color temperature CCT, pin 14 of chip U2 is connected to a PIR sensor, pin 13 of chip U2 is connected to a photosensitive ALS, resistor R2 is connected to capacitor C4, one end of capacitor C4 is grounded and the other end is connected to pin 10 of chip U2, one end of capacitor C2 is connected to VCC and the other end is grounded, resistor R1 is connected to VCC, and capacitor C3 is grounded.

[0006] Furthermore, pin 2 of the chip U1 is connected to CN1, the other end of CN1 is grounded, and pin 3 of the chip U1 is connected to capacitor C1, one end of capacitor C1 is connected to VCC.

[0007] Furthermore, pin 12 of the chip U3 is grounded, and pin 13 of the chip U3 is connected to VCC.

[0008] Compared with existing technologies, this invention has the following advantages: This invention includes an MCU module, a 3.3V-1.8V power supply module, and a wireless communication module. By switching the VCC voltage between normal operation and standby operation, it ensures real-time online communication of the wireless communication module while reducing standby power consumption. This effectively solves the problems existing in current products and increases the market penetration rate of smart lighting fixtures. Attached Figure Description

[0009] Figure 1 This is the circuit diagram of this utility model.

[0010] Figure 2 This is the circuit diagram of the MCU module.

[0011] Figure 3 This is a circuit diagram of the power supply module and the wireless communication module. Detailed Implementation

[0012] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0013] like Figures 1-3 As shown, a circuit for reducing standby power consumption includes an MCU module, a wireless communication module, and a power supply module. The MCU module includes a chip U2 with 16 pins. Pin 1 of chip U2 is connected to a capacitor C2, pin 4 is connected to a capacitor C3 and a resistor R1, pin 16 is grounded, and pin 10 is connected to a resistor R2. The power supply module includes a chip U1 with pins 1, 2, and 3. One end of pin 1 of chip U1 is connected to capacitor C1 and resistor R4. Resistor R4 is connected to resistors R3 and R5. Resistor R5 is connected to the collector of transistor Q1. One end of resistor R4 is connected to the emitter of transistor Q1. Resistor R6 is connected to the base of transistor Q1. Resistor R6 is connected to pin 12 of chip U1. The wireless communication module is equipped with chip U3. Chip U3 has 21 pins. Pin 3 of chip U3 is connected to resistor R2 and the LED driver dimming port.

[0014] In this embodiment, a color temperature CCT is connected to pin 15 of chip U2, a PIR sensor is connected to pin 14 of chip U2, a photosensitive ALS is connected to pin 13 of chip U2, a capacitor C4 is connected to resistor R2, one end of capacitor C4 is grounded and the other end is connected to pin 10 of chip U2, one end of capacitor C2 is connected to VCC and the other end is grounded, resistor R1 is connected to VCC, and capacitor C3 is grounded.

[0015] In this embodiment, pin 2 of chip U1 is connected to CN1, the other end of CN1 is grounded, and pin 3 of chip U1 is connected to capacitor C1, one end of capacitor C1 is connected to VCC.

[0016] In this embodiment, pin 12 of chip U3 is grounded, and pin 13 of chip U3 is connected to VCC.

[0017] refer to Figure 1 , Figure 2 This utility model includes an MCU module, a 3.3V-1.8V power supply module, and a wireless communication module.

[0018] The MCU module is a main control circuit consisting of a single-chip microcontroller (U2), a reset circuit with resistor R1 and capacitor C3, a power supply filter circuit with capacitor C2, and a dimming signal filter circuit with resistor R2 and capacitor C4. It is used to receive human body induction PIR, photosensitive ALS, color temperature control CCT, and Bluetooth dimming signal BLE-Dim-PWM, thereby realizing different functional control according to different needs.

[0019] refer to Figure 3 The wireless communication module is a Bluetooth communication module composed of chip U3, which provides Bluetooth communication function and dimming signal output.

[0020] refer to Figure 1The power supply module operates at a voltage of 3.3V-1.8V. It consists of chip U1, transistor Q1, capacitor C1, and resistors R3, R4, R5, and R6. Chip U1 is an adjustable output LDO, and CN1 is connected to an external power supply. The MCU module detects the presence or absence of the BLE-Dim-PWM signal to determine whether the system has entered standby mode. Pin 12 of chip U2 outputs a Standby Signal, which controls the conduction and cutoff of Q1 via resistor R6. When the system is operating normally, the MCU module detects the presence of the dimming signal and outputs a low-level Standby Signal. The formula for adjusting the output voltage is VCC = Vref(1 + R4 / R3) + (Iadj × R4), where Vref = 1.25V, and Iadj is very small and can be ignored in the calculation. The output voltage is set to 3.3V via resistors R3 and R4. When the system is in standby mode, the MCU module detects the absence of the dimming signal and outputs a high-level Standby Signal. The formula for adjusting the output voltage is VCC = Vref(1 + R4 / / R5 / R3) + (Iadj × R4 / / R5), where / / represents parallel connection, Vref is the reference voltage, and Iadj is the adjacent current. Vref = 1.25V, and the value of Iadj is very small and can be ignored in the calculation. The output voltage is set to 2V through resistors R3, R4, and R5. By switching the VCC voltage between normal operation and standby operation, both real-time online communication of the wireless communication module and standby power consumption are ensured. Since the VCC-powered MCU module and Bluetooth support 1.8-3.3V power supply, reducing the power supply voltage to reduce standby power consumption is feasible.

[0021] This document uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A circuit for reducing standby power consumption, characterized in that: Includes an MCU module, a wireless communication module, and a power supply module; The MCU module is equipped with a chip U2, which has 16 pins. One end of pin 1 of chip U2 is connected to a capacitor C2, one end of pin 4 of chip U2 is connected to a capacitor C3 and a resistor R1, pin 16 of chip U2 is grounded, and pin 10 of chip U2 is connected to a resistor R2. The power supply module is equipped with a chip U1, which has pins 1, 2, and 3. One end of pin 1 of chip U1 is connected to a capacitor C1 and a resistor R4. Resistor R4 is connected to resistors R3 and R5. Resistor R5 is connected to the collector of transistor Q1. One end of resistor R4 is connected to the emitter of transistor Q1. The base of transistor Q1 is connected to a resistor R6. Resistor R6 is connected to pin 12 of chip U1. The wireless communication module is equipped with a chip U3, which has 21 pins. Pin 3 of the chip U3 is connected to resistor R2 and the LED driver dimming port.

2. The circuit for reducing standby power consumption according to claim 1, characterized in that: A color temperature CCT is connected to pin 15 of chip U2, a PIR sensor is connected to pin 14 of chip U2, a photosensitive ALS is connected to pin 13 of chip U2, a capacitor C4 is connected to resistor R2, one end of capacitor C4 is grounded and the other end is connected to pin 10 of chip U2, one end of capacitor C2 is connected to VCC and the other end is grounded, resistor R1 is connected to VCC, and capacitor C3 is grounded.

3. The circuit for reducing standby power consumption according to claim 1, characterized in that: Pin 2 of the chip U1 is connected to CN1, and the other end of CN1 is grounded. Pin 3 of the chip U1 is connected to capacitor C1, and one end of capacitor C1 is connected to VCC.

4. The circuit for reducing standby power consumption according to claim 1, characterized in that: Pin 12 of chip U3 is grounded, and pin 13 of chip U3 is connected to VCC.

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