Smart power socket

The smart power strip (intelligent control of main and auxiliary jacks) is a very popular daily household appliance. It is widely used in the intelligent linkage power-saving control of computer hosts and computer peripherals, TVs, set-top boxes, routers and other related equipment.
          This design introduces an intelligent power strip solution based on the Renesas microcontroller R7F0C805. Its main product features are: when the main control jack device is turned on or off, the MCU will automatically control the power on and off of the device connected to the controlled jack (auxiliary jack) to achieve intelligent linkage and effective power saving.
Specific function description:
       After the system initialization is completed, the MCU uses a low-cost unidirectional power detection chip to detect in real time whether a device is plugged into the main control jack. In order to improve anti-interference, the detection threshold is preset to 30W. The MCU also detects the power of the main control jack device in real time through software trimmed mean filtering. When it detects that the power of the main control jack device is greater than the preset threshold, the MCU turns on the power input of the controlled (secondary) jack through the control relay; when it detects that the power of the main control jack device is greater than the preset threshold, When the power of the controlled jack device is less than the preset threshold, the MCU turns off the power input of the controlled (secondary) jack through the control relay. In this way, intelligent linkage control of the main and auxiliary jack power supplies is realized, effectively saving electricity.
Smart power socket system design block diagram: