Biosignal measurement apparatus

A biosignal measurement apparatus comprising:

• a bracelet membrane configured to be worn around a user's wrist;
• a fixing supporter installed in a first side portion of the bracelet membrane and configured to support a first side portion of the wrist;
• a moving supporter installed in a second side portion of the bracelet membrane, configured to move towards the fixing supporter and closely attach to a second side portion of the wrist;
• an information control unit to calculate a distance between the first side portion of the wrist and the second side portion of the wrist by detecting a movement distance of the moving supporter, and to calculate a displacement of a radial artery of the wrist by using a predetermined constant and the calculated distance between the first side portion of the wrist and the second side portion of the wrist;
• and a sensor unit installed in the bracelet membrane and measuring the user's biosignal from the radial artery,
• wherein the information control unit calculates the displacement of the radial artery of the wrist by multiplying the constant and the calculated distance between the first side portion of the wrist and the second side portion of the wrist.

A biosignal measurement apparatus comprising:

• a bracelet membrane configured to be worn around a user's wrist;
• a fixing supporter to installed in a first side portion of the bracelet membrane and configured to support a first side portion of the wrist;
• a moving supporter installed in a second side portion of the bracelet membrane, configured to move towards the fixing supporter, and closely attach to a second side portion of the wrist;
• an information control unit to calculate a distance between the first side portion of the wrist and the second side portion of the wrist by detecting a movement distance of the moving supporter, and to calculate a displacement of a radial artery of the wrist by using a predetermined constant and the calculated distance between the first side portion of the wrist and the second side portion of the wrist;
• a sensor unit installed in the bracelet membrane and measuring the user's biosignal from the radial artery;
• and
• a sensor actuator connected with the sensor unit and moving the sensor unit, wherein the information control unit actuates the sensor actuator by using the calculated displacement of the radial artery of the wrist, and moves the sensor unit towards the location of the radial artery, and
• wherein the sensor unit comprises four sensor portions, wherein each sensor portions comprises:
• a pulse waveform sensor to measure the user's pulse waveform from the radial artery;
• a luminous part to emit light toward the wrist respectively, and to measure an oxygen saturation level;
• and
• a pressure sensor to measure the user's blood pressure by measuring a pressure of the radial artery.