14 research outputs found
Internet of animals : characterisation of LoRa sub-GHz off-body wireless channel in dairy barns
Advances in wireless sensor technologies and MEMS have made it possible to automatically monitor the health status of dairy cows using Internet of things (IoT) and wireless body area networks. Since on-cow measuring devices are energy constrained, a proper characterisation of the off-body wireless channel between the on-cow sensor nodes and the back-end base station is required for an optimised deployment of these networks in barns. In this Letter, the long range (LoRa) off-body wireless channel has been characterised at 868 MHz, a typical IoT frequency. Both path loss and temporal fading were investigated using LoRa motes. Based on this characterisation, network planning and energy consumption optimisation of the on-body nodes could be performed, which enables the deployment of reliable dairy cow monitoring systems
Internet of animals: characterisation of LoRa subâGHz offâbody wireless channel in dairy barns
Assessment and comparison of total RF-EMF exposure in femtocell and macrocell base station scenarios
Joint Antenna-Channel Modelling for in-to-out-Body Propagation of Dairy Cows at 868 MHz
International audienc
Experimental characterisation of inâtoâoutâbody path loss at 433Â MHz in dairy cows
International audienc