Smart window and controller thereof, power detection method and storage medium

A smart window controller, comprising:

• a microcontroller;
• an output circuit coupled to the microcontroller and configured to output a driving signal under a control of the microcontroller;
• a first power supply coupled to a load through the output circuit and configured to supply an operating power supply to the load;
• a sampling resistor between the output circuit and the first power supply, a first terminal of the sampling resistor being coupled to the first power supply, and the second terminal of the sampling resistor being coupled to the output circuit;
• and
• a power acquiring circuit coupled to the microcontroller and respectively coupled to the first terminal and the second terminal of the sampling resistor, so as to acquire a voltage across the first terminal and the second terminal of the sampling resistor and send the voltage to the microcontroller based on a power detection instruction sent by the microcontroller, and further to acquire a load current value and a load power value;
• wherein the power acquiring circuit comprises:
• a channel interface coupled to the first terminal and the second terminal of the sampling resistor, respectively;
• and
• a sampling path coupled to the channel interface and the microcontroller to transfer a sampling signal of the sampling resistor to the microcontroller;
• and
• wherein the channel interface comprises:
• a first interface coupled to the first terminal of the sampling resistor and configured to receive a first sampling signal;
• a second interface coupled to the second terminal of the sampling resistor and configured to receive a second sampling signal;
• and
• a multiplexer coupled to the first interface and the second interface, and configured to select, based on the power detection instruction, one of the first sampling signal and the second sampling signal to be transferred to the sampling path.