Method for measuring vascular state and adhesive vascular state measurement device thereof

An adhesive vascular state measurement device comprising:

• a flexible substrate for being attached on a skin surface along a target vessel;
• a first coil arranged at a first position of the flexible substrate;
• wherein the first coil is configured to output a first transmission electromagnetic signal toward a first detecting location of the target vessel, and receive a first feedback electromagnetic signal induced, at the first detecting location, by the first transmission electromagnetic signal to generate a first sensing signal;
• a second coil arranged at a second position of the flexible substrate;
• wherein the second coil is configured to output a second transmission electromagnetic signal toward a second detecting location of the target vessel, and receive a second feedback electromagnetic signal induced, at the second detecting location, by the second transmission electromagnetic signal to generate a second sensing signal, wherein the first coil and the second coil are arranged in a line along an extending direction of the target vessel;
• and
• a control module coupled with the first coil and the second coil, wherein the control module includes:
• a signal generating unit configured to generate an AC signal provided to the first coil and the second coil to generate the first transmission electromagnetic signal and the second transmission electromagnetic signal, respectively;
• and
• a measurement unit configured to receive the first sensing signal and the second sensing signal, determine a signal characteristic difference between the first sensing signal and the second sensing signal that are derived substantially simultaneously from different locations along the extending direction, and determine at least one vascular state of the target vessel according to the signal characteristic difference.