• Rashmi Gupta

In the current era, our lives have started to become more and more dependent on embedded system, digital information technology that is embedded in our environment. This paper presents IOT applications and their challenges. Among various applications, this paper focused on home automation system, agriculture system and ICU Patient Monitoring System. IOT (Internet of Things) based ICU (Intensive Care Unit) patient monitoring system is a system, which measures the patient blood pressure, heart beat rate and temperature constantly that is admit in ICU room.

Microcontroller, IOT (Internet of Things), Smart home, Relay, PIR sensor

"A critical review on IoT-Big Challenges and Applications", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 5, page no.1021-1022, MAY-2018, Available :http://www.jetir.org/papers/JETIR1805591.pdf

"A critical review on IoT-Big Challenges and Applications", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 5, page no. pp1021-1022, MAY-2018, Available at : http://www.jetir.org/papers/JETIR1805591.pdf