Design of an Octopus Jellyfish Soft Robot to Improve Water Quality in Aquariums

Abstract

In this research, we describe an octopus jellyfish soft robot for an aquarium. The purpose of developing the soft robot is to improve water quality in aquariums without disturbing the landscape and can support the filtration machine. The robot mainly consists of a bell with a soft actuator, a battery, and a control circuit box. The battery is also housed within the control circuit box. The soft actuator based on a shape memory alloy wire is used to control the movement of the jellyfish’s bell. The bell part is made of silicone rubber, which reduces the possibility of injury if it comes into contact with an aquatic life. The control is wireless by using a microcontroller and radio communication. We investigated the effects of water temperature and drive current on bell movement.