Wireless Sensor Network as a part of Internet of Things

The concept of the Internet of Things is becoming more and more present today. Every day there will be more devices that could be included in the Internet of Things, whether it is a smart home device or workstation. It is a platform that connects different types of objects and provides them mutual communication. This means that different objects are interconnected with the ability to communicate, allowing users to manage and control them more effectively. Our aim is to conceive and approach IoT in terms of sensor networks and intelligent devices. Intelligent devices in the form of wristbands or watches contain different sensors that can be used to obtain data such as heart rate, blood pressure or body temperature. In this article, wireless sensor networks will be discussed which measure pulse and body temperature. Focus will be on hardware solutions for devices that allow the collection of selected data, specifically devices that could be included in future research. Similar researches will be included and tests that have been carried out in the past. The result of the article will be a summary of available tests with comparing them to each other, to design own solution in the future.