DESIGN & FABRICATION OF ISOLATION ROBOT SERVILENCE DELIVERY

Abstract

The increasing need for contactless transportation and remote monitoring in hospitals, laboratories, industries, quarantine areas, and hazardous environments has created a demand for autonomous and remotely operated mobile robots. This paper presents the design, fabrication, and performance analysis of an isolation robot developed for surveillance and delivery applications. The proposed robot combines a mobile differential-drive platform, wireless control, camera-based surveillance, obstacle detection, and a dedicated delivery compartment. The system is designed to transport lightweight materials such as food, medicines, documents, and laboratory items while allowing an operator to remotely monitor the surrounding environment. A three-dimensional CAD model is developed for the chassis, motor mounts, delivery compartment, camera support, and protective enclosure. Mechanical calculations are performed to determine motor torque, payload capability, wheel force, and battery requirements. Structural analysis is carried out using finite element analysis to evaluate deformation and equivalent von Mises stress. A representative prototype uses two 350 W geared DC motors, a 24 V 40 Ah battery, wireless control, and a 1080p camera. Experimental evaluation is conducted under different payloads and operating surfaces. The representative results show a maximum speed of approximately 1.2 m/s, practical operating speed of 0.8 m/s, maximum payload of 20 kg, and operating range of approximately 12.5 km under the selected test conditions. The delivery system achieves approximately 96% successful delivery accuracy, while the surveillance system provides real-time video monitoring. Structural analysis gives a representative maximum stress of 82 MPa and deformation of 0.68 mm, resulting in a factor of safety of approximately 3.05 for the assumed material. The developed system demonstrates the feasibility of a compact isolation robot for contactless delivery and remote surveillance.