UROP Proceedings 2020-21

School of Engineering Department of Electronic and Computer Engineering 165 Development of Network Communication System for Locomotion Robots Supervisor: WONG Man / ECE Student: WANG Haoyi / SENG Course: UROP1000, Summer The aim of the project is to develop a network system for communication between autonomous robots and a cloud server, and among these robots. The most critical issue is to build a high-accuracy positioning system with an error of up to centimeters, which means that the accuracy of the GPS solution cannot meet the requirements. Here we build a localization system for robots. After comparing the pros and cons of various technologies, we chose to use the UWB (Ultra Wide Band) scheme for the localization system. We analyzed the communication algorithm of base stations and tags in the UWB module. Then, we build a prototype localization system. The system has four base stations to show the 3-dimensional coordinates of the tags. Two tags are put in the system to verify the stability, and the number of tags can be increased to 20. After doing experiments in different base station locations and heights, we achieved the expected accuracy in a small range of about 2 by 2 by 2 meters. The system also runs stably in a larger measuring area of about 20 by 20 by 2 meters, but the accuracy under that condition needs to be improved.

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