Methods and devices for mode switching

A method for a controlling device coupled to a household electrical appliance to perform mode switching, wherein the household electrical appliance includes a fan, the method comprising:

• detecting whether a user is in a sleeping state;
• and
• sending, if the user is in the sleeping state, a mode switching instruction to the household electrical appliance to switch a current operation mode of the household electrical appliance, to cause the household electrical appliance operates in a silent mode, including:
• detecting a current air quality;
• and
• adjusting a speed of the fan based on a sleep quality of the user and the current air quality, to cause the speed of the fan to be positively correlated with the sleep quality of the user, and to be negatively correlated with the current air quality, the adjusting comprising:
• when the sleep quality of the user is a first sleep quality and the current air quality is a first air quality, adjusting the speed of the fan to a first speed;
• when the sleep quality of the user is a second sleep quality and the current air quality is the first air quality, adjusting the speed of the fan to a second speed;
• when the sleep quality of the user is the first sleep quality and the current air quality is a second air quality, adjusting the speed of the fan to a third speed;
• when the sleep quality of the user is the second sleep quality and the current air quality is the second air quality, adjusting the speed of the fan to a fourth speed;
• when the sleep quality of the user is the first sleep quality and the current air quality is a third air quality, adjusting the speed of the fan to a fifth speed;
• and
• when the sleep quality of the user is the second sleep quality and the current air quality is the third air quality, adjusting the speed of the fan to a sixth speed,
• wherein the first sleep quality is poorer than the second sleep quality, the first air quality is better than the second air quality, and the second air quality is better than the third air quality, the first speed is lower than the second speed, the second speed is lower than the third speed, the third speed is lower than the fourth speed, the fourth speed is lower than the fifth speed, and the fifth speed is lower than the sixth speed.

A household electrical appliance device including a fan, comprising:

• a processor;
• and
• a non-transitory computer-readable storage medium storing instructions that, when executed by the processor, cause the processor to:
• detect whether a user is in a sleeping state;
• switch, if the user is in the sleeping state, a current operation mode to a silent mode;
• and
• operate the device in the silent mode, including:
• detecting a current air quality;
• and
• adjusting a speed of the fan based on a sleep quality of the user and the current air quality, to cause the speed of the fan to be positively correlated with the sleep quality of the user, and to be negatively correlated with the current air quality, the adjusting comprising:
• when the sleep quality of the user is a first sleep quality and the current air quality is a first air quality, adjusting the speed of the fan to a first speed;
• when the sleep quality of the user is a second sleep quality and the current air quality is the first air quality, adjusting the speed of the fan to a second speed;
• when the sleep quality of the user is the first sleep quality and the current air quality is a second air quality, adjusting the speed of the fan to a third speed;
• when the sleep quality of the user is the second sleep quality and the current air quality is the second air quality, adjusting the speed of the fan to a fourth speed;
• when the sleep quality of the user is the first sleep quality and the current air quality is a third air quality, adjusting the speed of the fan to a fifth speed;
• and
• when the sleep quality of the user is the second sleep quality and the current air quality is the third air quality, adjusting the speed of the fan to a sixth speed,
• wherein the first sleep quality is poorer than the second sleep quality, the first air quality is better than the second air quality, and the second air quality is better than the third air quality, the first speed is lower than the second speed, the second speed is lower than the third speed, the third speed is lower than the fourth speed, the fourth speed is lower than the fifth speed, and the fifth speed is lower than the sixth speed.

A controlling device coupled to a household electrical appliance including a fan, the controlling device comprising:

• a processor;
• and
• a non-transitory computer-readable storage medium storing instructions that, when executed by the processor, cause the processor to:
• detect whether a user is in a sleeping state;
• and
• send, if the user is in the sleeping state, a mode switching instruction to the household electrical appliance to switch a current operation mode of the household electrical appliance, to cause the household electrical appliance operates in a silent mode, including:
• detecting a current air quality;
• and
• adjusting a speed of the fan based on a sleep quality of the user and the current air quality, to cause the speed of the fan to be positively correlated with the sleep quality of the user, and to be negatively correlated with the current air quality, the adjusting comprising:
• when the sleep quality of the user is a first sleep quality and the current air quality is a first air quality, adjusting the speed of the fan to a first speed;
• when the sleep quality of the user is a second sleep quality and the current air quality is the first air quality, adjusting the speed of the fan to a second speed;
• when the sleep quality of the user is the first sleep quality and the current air quality is a second air quality, adjusting the speed of the fan to a third speed;
• when the sleep quality of the user is the second sleep quality and the current air quality is the second air quality, adjusting the speed of the fan to a fourth speed;
• when the sleep quality of the user is the first sleep quality and the current air quality is a third air quality, adjusting the speed of the fan to a fifth speed;
• and
• when the sleep quality of the user is the second sleep quality and the current air quality is the third air quality, adjusting the speed of the fan to a sixth speed,
• wherein the first sleep quality is poorer than the second sleep quality, the first air quality is better than the second air quality, and the second air quality is better than the third air quality, the first speed is lower than the second speed, the second speed is lower than the third speed, the third speed is lower than the fourth speed, the fourth speed is lower than the fifth speed, and the fifth speed is lower than the sixth speed.