*4.2. Centralized Early Data Processing: CYEdge*

Data centralisation and setup of the sensor network is achieved with the CYEdge technology. It is a box that can be connected to an external battery or to the socket. The technology consists of two parts. The first one is a Raspberry Pi 4 (Processing Unit) and the second one is a proprietary shield developed by CYleone that enables LoRa communication with CYComs. This shield is a LoRa gateway that allows the processing of AT commands sent by the Raspberry Pi. These commands are sent to setup the CYComs but also to retrieve the data frames from the CYComs. The Raspberry Pi acts mainly as a data processing and graphic display unit. It reads, processes, saves and displays data from the shield on the graphical user interface. The interface allows the configuration of the sensor network and the retrieval of all the data and configurations of each CyCom. It can be accessed by connecting via WiFi or Ethernet to the local network created by the board itself, or to an existing network. The Raspberry can also be used for other parallel tasks such as GPS measurements, digital data retrieval and synchronization of this data with that received via LoRa.
