Internet of things for healthcare monitoring applications based on RFID clustering scheme

A method for a sensor-based monitoring system that collects data to measure health condition of a plurality of people at an event, the sensor-based monitoring system includes a computer system, a plurality of smart nodes for the plurality of people, and at least one RFID reader device, each of the plurality of smart nodes including a radio frequency identification (RFID) tag, a wireless sensor network communication device, and at least one body sensor, the at least one body sensor including at least one of a body temperature sensor, a pulse sensor and a muscle activity sensor, the computer system includes processing circuitry, the method comprising:

• determining, by the circuitry, candidate cluster heads as smart nodes with above-average battery level,
• each of the plurality of smart nodes:
• determining a subset of the candidate cluster heads that are within communication range,
• retrieving battery level of the determined subset of cluster heads, and
• selecting a cluster head having the highest battery level,
• the selected cluster head:
• sending a message to announce selection as the selected cluster head,
• receiving messages, from the plurality of smart nodes that are within communication range, requesting to join a cluster,
• reading sensor data of the body sensor in each joined smart sensor as collective sensor data for the cluster, and
• sending the collective sensor data to the computer system via the at least one RFID reader,
• measuring, by the circuitry, the health conditions of the plurality of people at the event based on the sent collective sensor data.