Screen brightening control system and method, storage medium and intelligent mirror

The invention discloses a screen brightening control system and method, a computer readable storage medium and an intelligent mirror. The system comprises a first processing module, a sensing signal emitting module, a sensing signal receiving module and a display screen, wherein the first processing module is connected with the sensing signal emitting module and used for outputting modulating signals to the sensing signal emitting module, the sensing signal emitting module is used for output carrier signals according to the modulating signals, the sensing signal receiving module is connected with the first processing module and used for receiving the carrier signals returned by at least one shielding object and transmitting low level signals to the first processing module after demodulating the carrier signals, the first processing module is connected with the display screen and used for receiving the low level signals, when the preset times of low level signals are continuously received in the preset receivi