Monitor Human Vital Signs based on IoT Technolgy using MQTT Protocol

General healthcare is essential due to the rapidly growing population and current medical costs. People living far away from cities suffer from poor medical care due to a lack of medical resources. Important to finding an active healthcare monitoring system capable of detecting deterioration of health over time in order to act quickly and taking the necessary measures on the basis of the information obtained. In case the patient has heart disease and symptoms appear for some time and disappear, the monitor standard cannot record of symptoms during a few minutes. In this case, the doctor should recommend a portable device that monitors the blood oxygen level, heart rate and body temperature which usually takes 24 to 48 hours. This paper aims to provide better healthcare for people across developing a system for detecting human vital signs such as heart rate, blood oxygen level, body temperature, temperature and humidity of the surrounding environment based on the Ubidots Internet of Things (IoT) platform. The device consists of a two-part Master and Slave. A master part is a control unit responsible for the operation of sensors remotely in real-time. Slave does collect, calculate and send data to the server using the Message Queuing Telemetry Transport (MQTT) protocol depending on the signal that sends from Master to Slave to activate the sensor required. Multiple sensors have been integrated to measure and display the vital parameters of the patient simultaneously from anywhere and at any time. All collected data displayed in a scientific manner through a program designed and installed on the smartphone or computer. This device allows medical staff to continuously monitor the patient and accurately detect changes in patient status in real-time.