A Short Review on Comparative Analysis of Depth(d) To Weight (w) Ratio (d:w) of Existing Water Robot

Abstract

The term Robotics has become one of the hot topics in this era of technology, the field robotics has evolved in a wide range based on its application. Its invasion has become inevitable serving the human community by ensuring that making things which are impossible to possible. Water Robots is one such field. Though there are lot of researchers across the globe working on this area proposing their innovative design with add on features compared to the existing one. Water robots includes both marine robots and fresh water robots. This marine robotics can be employed for deep sea exploration, exploring extra-terrestrial organism in other planet, rescue operation serving as life boat saving human life, surveillance of deep-sea ecosystem or underwater photography, under water infrastructure maintenance and environmental monitoring. The design of these under water robots lies with various constraints and challenges like weight and power capacity (ROV-remotely operated Vehicle having power cable connected with robot) and (AUV-Automated Underwater Vehicle working without power cable), dimension of the robot, depth that the robot can reach (shallow robots (robots that can reach to the depth less than 6000m) and deep-sea robots (reaching depth more than 6000 meters). Since the scope for improvement in the design of these underwater robots is more while considering the design constraints, there is a need for a comprehensive comparative analysis of these design constraints for the existing under water robots in terms of depth to weight (d:w)ratio analysis. In this article, an exhaustive survey is made considering all existing under water robots categorized based on its mode of application. The study not only limits with classification but also enables the readers to compare the value of design constraints in the existing under water robot. This knowledge enhances the researcher for better understanding of existing marine robots based on which a new innovative design could be arrived overcoming the benchmark.