Abstract

The Application of Ultrasonic Positioning System for Indoor Navigation of Omni-directional Mobile Robot

Highlights

  • Indoor positioning has been a popular research topic

  • While one series port was designed for the communication with the Zigbee coordinator to calculate the moving coordinate via the time difference for the ultrasonic reflection of each node, the other series port was used for wireless communication with the omni-directional mobile robot, through which the current position of the robot and the expected position input by a user were transmitted to enable automatic navigation

  • This study adopted a combination of ultrasonic sensors and a Time of flight (TOF) positioning algorithm for higher precision

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Summary

Introduction

Indoor positioning has been a popular research topic. It can be applied to robots, equipping them with self-navigation abilities, an essential function for intelligent robots. As previously mentioned, the self-navigation ability of a good intelligent robot is crucial. Good self-navigation is built on a mature and reliable positioning system. ISSN 0914-4935 © MYU K.K. directional mobile robot was employed to test the reliability of this positioning system. Directional mobile robot was employed to test the reliability of this positioning system Several paths, such as squares or circles, were designed for the robot to move spontaneously in a given space. Actual moving positions of the robot were collected to measure the positioning error of the mobile robot using this ultrasonic indoor positioning system

ZigBeX module and ultrasonic sensors
Structure of the ultrasonic positioning system
Positioning algorithm
Omni-Directional Mobile Robot
Test of ultrasonic positioning system
Automatic navigation test of omni-directional mobile robot
Conclusions

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