An efficient approach to monitoring environmental conditions using a wireless sensor network and NodeMCU

Abstract

In recent years, wireless sensor networks (WSNs) have become established as an effective way of interconnecting sensor devices with simultaneous communication and data processing. Since it allows low-cost and low-power sensor devices, the use of WSNs has increased in different application areas, such as environmental monitoring, smart cities and crowdsourcing. This paper presents the functional design and implementation of a system for monitoring environmental conditions through using a WSN and NodeMCU. The system is developed for web- and mobile-based applications where preprocessed data are subsequently sent to the cloud via a web API, where comprehensive data analytics can be performed to gain better insight into the overall environmental conditions and help with improvements. The user can monitor measured data anywhere via the Internet by using the web and mobile applications. If the data measured by a sensor node exceeds the configured value range, the web application sends a notification to the user to improve the environmental conditions.