Sistema d’obtenció i gestió remota en temps real de paràmetres mediambientals en un hivernacle
Document typeBachelor thesis
Rights accessOpen Access
In recent years, there has been a significant increase in some technologies (IEEE 802.15.4, 6LoWPAN, CoAP, etc.) to implement wireless sensor networks (WSN). Where, small, compact and economic devices, called nodes- sensors, have the ability to measure, detect and supply data to other systems. These networks are formed by low cost and energy-saving nodes-sensors that communicate wirelessly. They are specially designed for communication with lossy links, and limited memory resources and processing capacity. This project is based on the collaboration between the Department of Telematics of EETAC and the Department of Agri-Food Engineering and Biotechnology of ESAB, at the UPC Campus in Baix Llobregat. The purpose is to deploy a system to collect and manage, in real-time, environmental parameters in an Agropolis greenhouse located in Viladecans (Barcelona). The parameters of interest are the measurement of temperature and humidity at different soil depths, and the measurement of the ambient temperature in three different points of the greenhouse. To implement this scenario, the interfaces were first designed to connect the different sensors provided (Decagon 5TE and 5TM, and RTD PT100) with the nodes-sensors, implemented by the Redwire Econotag platform. Then, an application has been created using the Contiki OS, based on the CoAP protocol (Constrained Application Protocol), to read and manage sensor data on each sensor node. Finally, a WSN based on the IEEE 802.15.4 standard has been created to recover the data from the different nodes-sensors and upload them to the Internet. The router in charge of giving IPv6 connectivity to the WSN nodes is formed by a Raspberry Pi B + (RPi) plus a module to provide IEEE 802.15.4 connectivity. The RPi performs periodic requests to the different nodes-sensors to obtain the measured parameters, store them in the local memory, and upload them to a spreadsheet on the Google Drive platform.