IMPLEMENTATION OF A VITAL SIGNS MONITORING SYSTEM WITH BLOCKCHAIN STORAGE

The advent of wearable devices has placed people at the centre of the healthcare delivery process, empowering them to take control of their health and simplifying interactions with healthcare professionals. However, these wearable devices face data loss, theft, unavailability, or misuse by health information managers. In this article, blockchain technology is employed to store patients’ medical data in a decentralised blockchain made available to the patient or the Doctor upon request. The patient’s medical data is secured by a passphrase that the user keeps securely. To achieve real-time patient health monitoring with cloud storage, this study implemented a wearable device that monitors the temperature and pulse of the patient using the Arduino nano microcontroller, Air 208 GSM Module, MAX30102 Pulse sensor, DS18B20 Temperature sensor, Li-ion batteries, and a 1.7-inch TFT LCD. The medical data collected is sent at intervals to the blockchain via an HTTP request. The system reached 99.4% accuracy for temperature readings when measured against clinical values, and 93.4% accuracy for pulse, and the data collected is stored securely in a decentralised manner on the Ethereum Blockchain.