Design of a wireless sensor network for oceanic floating cages in aquaculture

Abstract

This paper presents the design of a wireless sensor network for oceanic floating cages in aquaculture. The deployment of the sensor network over current aquaculture installations is discussed. The software and hardware of a sensor node are outlined. A wireless information and power transfer interface, based on the ISO 11784/11785 HDX standard, for underwater sensor nodes are studied. The misalignment problem in the wireless interface antennas is evaluated in depth. In addition, it is determined the maximum allowed misalignment to keep the information and power transfer efficiency over 70%. Moreover, we establish a linear function to model the charging rate with a maximum error of a 2.2%. Finally, all data presented in this paper is based on real measurements over the sensor node prototypes implemented with commercial devices.