Portable Transmitter Boundary Mapping for Mobile Robots
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Solution Overview
Problem
Existing mobile robot systems face accuracy issues due to signal interference and user dependence, particularly when setting boundary regions for outdoor operations, which affects the precision and usability of the robot's movement and operation.
Innovation Solution
A mobile robot system that includes a portable transmitter sending location information signals, allowing the robot to adjust its separation distance and angle relative to the transmitter, and generates boundary information using its movement path, enabling user-independent operation and improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user is always located between the cleaner body and the connection portion to operate the mobile robot, then the user can control the robot, but the user's body causes signal interference and lowers sensor accuracy
Solution Approach 1:
The patent extracts the user from the signal transmission path by introducing a portable transmitter that the user carries separately. The transmitter communicates with the mobile robot through wireless signals, allowing the user to control the robot without their body interfering with the sensor measurements between the cleaner body and connection portion.
Solution Approach 2:
The portable transmitter serves as an intermediary device between the user and the mobile robot. It receives control inputs from the user and transmits them to the robot via wireless communication, eliminating the need for direct line-of-sight or physical positioning that causes signal interference.
2Adaptability or versatility
If the follow-up point is set on the basis of separation distance and rotation angle, then the robot can follow the user, but the accuracy is highly dependent on these measurement values which are affected by user's body
Solution Approach 1:
The patent replaces the mechanical measurement system (sensors measuring separation distance and rotation angle) with a wireless communication system. The portable transmitter sends location information signals that the robot uses to determine its position and orientation relative to the user, eliminating the measurement inaccuracies caused by the user's body blocking sensor signals.
3Adaptability or versatility
If a boundary region is set for outdoor mobile robot operation, then the robot can operate in unrestricted wide regions, but it requires additional boundary setting procedures
Solution Approach 1:
The mobile robot autonomously generates boundary information by utilizing its own movement path data. As the robot moves within the outdoor region, it collects location information and automatically creates boundary definitions without requiring external setup procedures or additional devices, simplifying the system while maintaining operational flexibility.
Data Source
AI summary
The present invention relates to a mobile robot system for autonomously traveling in a travel area, and a method for generating boundary information of the mobile robot system, the mobile robot system being characterized by comprising: a transmitter for transmitting a transmission signal including location information; and a mobile robot which moves and rotates on the basis of the separation distance to the transmitter and the angle with respect to the transmitter, and generates boundary information on a travel area by using a movement path, wherein the transmitter moves along the periphery of the mobile robot and changes the separation distance and the angle to control the travel of the mobile robot.