Wearable pressure ulcer detection sensor and pressure ulcer detection system including the same

A wearable pressure ulcer detection sensor comprising:

• a pressure sensor configured to measure pressure on a body of a user;
• a temperature sensor configured to measure temperature on the body of the user;
• an impedance sensor including two electrodes spaced apart from each other and configured to be in contact with skin of the user to measure tissue impedance;
• a microprocessing unit electrically connected to the pressure ulcer detection sensor, wherein the microprocessing unit is configured to:
• receive pressure values from the pressure sensor, temperature values from the temperature sensor, and tissue impedance values from the impedance sensor, and
• calculate a pressure ulcer indicator to determine a risk of developing pressure ulcers, the pressure ulcer indicator including a pressure, a temperature, and a tissue impedance value;
• and
• a wireless communication unit configured to transmit the pressure ulcer indicator to a terminal device including a doctor's device, a user's device, or a guardian's device,
• wherein based on a signal from the terminal device, the following are controlled by the microprocessing unit:
• ON/OFF of the pressure ulcer detection sensor, a transmission interval of the pressure ulcer indicator, and a selective transmission of only specific values among the pressure, the temperature, and the tissue impedance.