Blood pressure measurement device

A blood pressure measurement device, comprising a body, an airbag, an air supply and exhaust apparatus, a first sensor, and a second sensor, wherein:

• the body comprises a cavity, and the air supply and exhaust apparatus is disposed in the cavity;
• the airbag comprises an air cavity, and the airbag is detachably connected to an end of the body;
• the air supply and exhaust apparatus comprises an air intake path and an air exhaust path, and the air supply and exhaust apparatus communicates with the air cavity of the airbag through a first air path;
• the first sensor communicates with the air cavity of the airbag to measure an air pressure value in the air cavity, and a first blood pressure value is obtained based on the air pressure value measured by the first sensor;
• when the air cavity of the airbag is not filled with air, the second sensor obtains a pulse wave signal, and obtains a second blood pressure value based on the first blood pressure value and the pulse wave signal;
• the airbag and the second sensor are arranged in a stacked manner;
• and
• the blood pressure measurement device further comprises a wrist strap, the wrist strap is connected to the end of the body, the second sensor is arranged on the wrist strap, and the second sensor is located between the airbag and the wrist strap.