Photoplethysmography (PPG) based control method and electronic device

An electronic device, comprising:

• a photoplethysmography (PPG) module, wherein the PPG module comprising a plurality of light-emitting diodes (LEDs) and a plurality of photodiodes (PDs);
• at least one processor;
• and
• one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to cause the electronic device to perform operations comprising:
• storing, in one of the one or more memories of the electronic device, a predetermined correspondence between a plurality of predefined workout scenarios and respective target received currents for monitoring of human body characteristics using the PPG module;
• determining, by the electronic device from the plurality of predefined workout scenarios, a target workout scenario in which the electronic device is located;
• determining, by the electronic device based on the predetermined correspondence, the target received current corresponding to the target workout scenario;
• using, by the electronic device, the plurality of LEDs to emit a light signal corresponding to a first current toward a human body;
• using, by the electronic device, at least one of the plurality of PDs to obtain a second current returned by the light signal corresponding to the first current via a human tissue of the human body;
• and
• reducing, by the electronic device, the first current by using a preset first current step size when the electronic device determines that the second current is greater than the target received current, or increasing, by the electronic device, the first current by using the preset first current step size when the electronic device determines that the second current is less than the target received current.

One or more non-transitory computer-readable media storing computer instructions, that when executed by one or more processors, cause an electronic device to perform operations, wherein the electronic device comprises a photoplethysmography (PPG) module, wherein the PPG module comprising a plurality of light-emitting diodes (LEDs) and a plurality of photodiodes (PDs), and the operations comprise:

• storing, in a memory of the electronic device, a predetermined correspondence between a plurality of predefined workout scenarios and respective target received currents for monitoring of human body characteristics using the PPG module;
• determining, by the electronic device from the plurality of predefined workout scenarios, a target workout scenario in which the electronic device is located;
• determining, by the electronic device based on the predetermined correspondence, the target received current corresponding to the target workout scenario;
• using, by the electronic device, the plurality of LEDs to emit a light signal corresponding to a first current toward a human body;
• using, by the electronic device, at least one of the plurality of PDs to obtain a second current returned by the light signal corresponding to the first current via a human tissue of the human body;
• and
• reducing, by the electronic device, the first current by using a preset first current step size when the electronic device determines that the second current is greater than the target received current, or increasing, by the electronic device, the first current by using the preset first current step size when the electronic device determines that the second current is less than the target received current.