Physiology measurement device and system, and operating method of wireless single chip

A physiology measurement system, configured to measure physiological characteristics of a user via a skin surface of the user, the physiology measurement system comprising:

• an optical physiology measurement device comprising:
• a coherent light source configured to illuminate the skin surface in a first brightness value and a second brightness value different from the first brightness value;
• an image sensor configured to receive scattered light from tissues under the skin surface, output a first image frame corresponding to the first brightness value and output a second image frame corresponding to the second brightness value;
• a processor electrically coupled to the light source and the image sensor, and configured to calculate an intensity comparison index between the first image frame and the second image frame, identify a contact status of the image sensor with respect to the skin surface according to the intensity comparison index, and calculate tissue perfusion according to at least one of the first image frame and the second image frame;
• and
• a first communication interface configured to output the tissue perfusion;
• and
• an electronic device wirelessly coupled to the optical physiology measurement device and comprising:
• a second communication interface configured to receive the tissue perfusion from the optical physiology measurement device;
• and
• a display device configured to show the tissue perfusion on a screen thereof.

An operating method of a wireless single chip, configured to measure physiological characteristics of a user via a skin surface of the user, the wireless single chip comprising a coherent light source, an image sensor and a processor, the operating method comprising:

• controlling the coherent light source to illuminate the skin surface in a first brightness value and a second brightness value different from the first brightness value;
• acquiring, by the image sensor, a first image frame corresponding to the first brightness value and a second image frame corresponding to the second brightness value by receiving scattered light from tissues under the skin surface;
• calculate, by the processor, an intensity comparison index between the first image frame and the second image frame;
• identifying, by the processor, a contact status of the wireless single chip with respect to the skin surface according to a comparison result of comparing the intensity comparison index with a threshold;
• and
• calculating, by the processor, tissue perfusion according to at least one of the first image frame and the second image frame.