String light circuit with human body sensing
View Patent ↗A string light circuit with human body sensing includes a main control MCU module, a timer module, an audio output module, LED lights with multiple circuit-driven channels, an infrared receiving module, a mode switching module, a body-sensing module, and a power supply module. The timer module provides periodic pulse signals to the main control MCU module; the audio output module drives a speaker to generate sound; the LED lights with multiple circuit-driven channels are controlled by the main control MCU module and generate light signals; the infrared receiving module receives infrared signals to control the main control MCU module to operate in a preset mode; the mode switching module receives external mechanical actions to control the main control MCU module to operate in a preset mode; the body-sensing module senses the presence of people nearby to control the main control MCU module to operate in a preset mode.
1. A string light circuit with human body sensing, comprising a main control MCU module, a timer module, an audio output module, LED lights with multiple circuit-driven channels, an infrared receiving module, a mode switching module, a body-sensing module, and a power supply module, wherein
the timer module provides periodic pulse signals to the main control MCU module to drive the main control MCU module to operate;
the audio output module drives a speaker to generate sound and is controlled by the main control MCU module;
the LED lights with multiple circuit-driven channels are controlled by the main control MCU module and generate light signals under the control of the main control MCU module;
the infrared receiving module receives infrared signals to control the main control MCU module to operate in a preset mode;
the mode switching module receives external mechanical actions to control the main control MCU module to operate in a preset mode;
the body-sensing module senses presence of people nearby to control the main control MCU module to operate in a preset mode;
the power supply module supplies power to the main control MCU module, the timer module, the audio output module, the LED lights with multiple circuit-driven channels, the infrared receiving module, the mode switching module, and the body-sensing module;
the power supply module is a voltage conversion circuit with an low dropout (LDO) chip as a core, a 4.5 V dry battery is adopted as a power supply, a connection between the power supply and an input end of the LDO chip is controlled by a switch, and the LDO chip outputs a voltage of 3.3 V;
power supply ends of the main control MCU module, the timer module, and the LED lights with multiple circuit-driven channels are directly connected to the input end of the LDO chip; and
the infrared receiving module and the body-sensing module are connected to an output end of the LDO chip.
2. The string light circuit with human body sensing according to claim 1 , wherein the LDO chip adopts LM1117-3.3.
3. The string light circuit with human body sensing according to claim 1 , wherein the main control MCU module is an STM8 single-chip microcomputer.
4. The string light circuit with human body sensing according to claim 1 , wherein the timer module is an active crystal oscillator circuit.
5. The string light circuit with human body sensing according to claim 1 , wherein the LED lights with multiple circuit-driven channels adopt a driving circuit controlled by triodes for switching on and off.
6. The string light circuit with human body sensing according to claim 1 , wherein the infrared receiving module adopts an infrared photodiode as a receiver.
7. The string light circuit with human body sensing according to claim 1 , wherein the mode switching module is a self-recovery button that emits a pulse to the main control MCU when mechanically pressed.
8. The string light circuit with human body sensing according to claim 1 , wherein the body-sensing module is an infrared pyroelectric sensor and adopts SR602.
9. A string light circuit with human body sensing, comprising a main control MCU module, a timer module, an audio output module, LED lights with multiple circuit-driven channels, an infrared receiving module, a mode switching module, a body-sensing module, and a power supply module, wherein
the timer module provides periodic pulse signals to the main control MCU module to drive the main control MCU module to operate;
the audio output module drives a speaker to generate sound and is controlled by the main control MCU module, and the audio output module adopts a CS4344 chip;
the LED lights with multiple circuit-driven channels are controlled by the main control MCU module and generate light signals under the control of the main control MCU module;
the infrared receiving module receives infrared signals to control the main control MCU module to operate in a preset mode;
the mode switching module receives external mechanical actions to control the main control MCU module to operate in a preset mode;
the body-sensing module senses presence of people nearby to control the main control MCU module to operate in a preset mode; and
the power supply module supplies power to the main control MCU module, the timer module, the audio output module, the LED lights with multiple circuit-driven channels, the infrared receiving module, the mode switching module, and the body-sensing module.
10. The string light circuit with human body sensing according to claim 9 , wherein the power supply module is a voltage conversion circuit with an low dropout (LDO) chip as a core, a 4.5 V dry battery is adopted as a power supply, a connection between the power supply and an input end of the LDO chip is controlled by a switch, and the LDO chip outputs a voltage of 3.3 V;
power supply ends of the main control MCU module, the timer module, and the LED lights with multiple circuit-driven channels are directly connected to the input end of the LDO chip; and
the infrared receiving module and the body-sensing module are connected to an output end of the LDO chip.
11. The string light circuit with human body sensing according to claim 10 , wherein the LDO chip adopts LM1117-3.3.
12. The string light circuit with human body sensing according to claim 9 , wherein the main control MCU module is an STM8 single-chip microcomputer.
13. The string light circuit with human body sensing according to claim 9 , wherein the timer module is an active crystal oscillator circuit.
14. The string light circuit with human body sensing according to claim 9 , wherein the LED lights with multiple circuit-driven channels adopt a driving circuit controlled by triodes for switching on and off.
15. The string light circuit with human body sensing according to claim 9 , wherein the infrared receiving module adopts an infrared photodiode as a receiver.
16. The string light circuit with human body sensing according to claim 9 , wherein the mode switching module is a self-recovery button that emits a pulse to the main control MCU when mechanically pressed.
17. The string light circuit with human body sensing according to claim 9 , wherein the body-sensing module is an infrared pyroelectric sensor and adopts SR602.