Ring-shaped biometric signal sensing device

A ring-shaped biometric signal sensing device comprising:

• a first electrode having a ring shape and a conductor, the first electrode being configured to be worn on a finger of a user to be in contact with the finger;
• a second electrode disposed on an outside of the first electrode, having a conductor, and configured to be in contact with a body of the user;
• an insulating unit disposed between the first electrode and the second electrode to maintain insulation between the first electrode and the second electrode;
• and
• a controller disposed in the insulating unit, including a biometric sensor, and configured to collect a biometric signal when the second electrode comes into contact with the body of the user,
• wherein the controller is configured to collect the biometric signal of the user when the second electrode contacts and releases contact with a portion of the body of the user other than the finger once or twice in a row.

A ring-shaped biometric signal sensing device comprising:

• a first electrode having a ring shape and a conductor, the first electrode being configured to be worn on a finger of a user and to be in contact with the finger;
• a second electrode disposed on an outside of the first electrode, having a conductor, and configured to be in contact with a body of the user;
• an insulating unit disposed between the first electrode and the second electrode to maintain insulation between the first electrode and the second electrode;
• and
• a controller disposed in the insulating unit, including a biometric sensor, and configured to collect a biometric signal when the second electrode comes into contact with the body of the user,
• wherein the insulating unit has a flexible material, and a portion of the insulating unit penetrates the first electrode and is configured to be in close contact with the finger of the user when worn by the user,
• wherein the first electrode has a hole, and the insulating unit has a protrusion protruding inwards,
• wherein the protrusion is disposed in and through the hole and an edge of the protrusion is aligned with an edge of the hole,
• wherein a surface of the protrusion has a flat surface shape, and a flat surface of the protrusion is configured to be in close contact with the finger of the user, and
• wherein the first electrode has two holes and the insulating unit has two protrusions.