Specification of requirements of an IoT system witch UML

Nowadays, the application of IoT technologies has increased significantly, being used in different sectors such as agriculture, transportation, industry, medicine and many other application areas. In recent years, much progress has been made in the necessary technologies that have made this practice possible, such as low-cost devices, connectivity, and middleware platforms. All these technologies have already been extensively studied. However, an IoT system is the set of sensors, actuators and software that interact with each other to achieve a purpose without human involvement, which makes the traditional software development paradigm not enough. That is why it is necessary to have a new systematic approach for the software development of IoT systems and especially for the modeling of functional requirements. In this work we propose the application and integration of different recently proposed methods for obtaining and elicit requirements for this type of systems: IotReq, service-oriented architecture (SOA), Unified Modeling Language (UML) and Precise SOM. A simple case is presented based on the "COVID Monitoring Station" prototype developed during the COVID-19 pandemic.