Authors : Kirubakaran S. D.; Kishore M.; Kissor Raj R.; Kona Prem Kumar Reddy; S. K. Uma Maheshwari

Volume/Issue : Volume 11 - 2026, Issue 4 - April

Google Scholar : https://tinyurl.com/3mbn5x82

Scribd : https://tinyurl.com/4akymeum

DOI : https://doi.org/10.38124/ijisrt/26apr251

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.

Abstract : Elderly individuals living alone face significant challenges related to continuous health monitoring, security, and timely emergency response. This paper presents a comprehensive IoT-enabled Smart Elder Care Service that integrates physiological monitoring (heart rate and ambient/body temperature), safety monitoring (PIR motion and magnetic door sensors), and resilient emergency notification mechanisms (MQTT/ThingSpeak + GSM SIM900A fallback). The system is designed around a NodeMCU ESP8266 microcontroller, and supports local (buzzer/LED) and remote (SMS/call, cloud dashboard) alert channels. We provide design rationale, hardware/software implementation details, block and flow diagrams, pseudocode for alert logic, a security and privacy discussion, performance evaluation methodology, and an appendix with an Arduino/ESP8266 sketch template. The architecture is modular, low-cost, and suitable for scaled deployments in assisted-living institutions and home-care scenarios.

Keywords : IoT, Elder Care, Health Monitoring, Safety Sys- Tem, Emergency Response, MQTT, GSM, ESP8266, ThingSpeak.

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