Autonomous Navigation Using RF Direction Estimation and Obstacle Avoidance
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Solution Overview
Problem
Conventional autonomous movement devices rely on radar or imaging devices like cameras for navigation, which can be costly and complex, and often require infrastructure, limiting their ability to efficiently reach targets in various environments without obstacles.
Innovation Solution
An autonomous movement device that uses multiple antennas to receive and estimate the direction of radio waves or high-frequency electromagnetic waves emitted by a target object, allowing it to navigate and avoid obstacles without radar or imaging systems, employing a simple configuration to reduce costs and enhance flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radar or imaging devices like cameras are used for navigation, then navigation accuracy and obstacle detection capability are improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical/optical navigation systems (radar, cameras) with an electromagnetic wave-based direction estimation system. The autonomous movement device estimates the arrival direction of electromagnetic waves emitted by the target object using antenna elements and signal processing, substituting expensive imaging devices with a simpler electromagnetic field detection approach that achieves comparable navigation accuracy
Solution Approach 2:
The patent uses multiple antenna elements to create virtual reception points through signal processing, copying the function of having physically separated sensors without the associated complexity. By processing signals from multiple antennas to estimate arrival directions, the system achieves spatial awareness equivalent to having multiple physical sensors positioned at different locations
2Reliability
If radar or imaging devices are used for navigation, then obstacle detection capability is improved, but cost increases
Solution Approach 1:
The patent substitutes expensive radar and camera systems with a cost-effective electromagnetic wave direction estimation system. By using antenna elements and processing electromagnetic wave signals to detect obstacles through arrival direction analysis, the system achieves reliable obstacle detection at a fraction of the cost of conventional sensing systems
Solution Approach 2:
The patent employs inexpensive antenna elements and signal processing components instead of costly radar transmitters and camera systems. The electromagnetic wave-based approach uses readily available components that can be manufactured at low cost while providing sufficient obstacle detection capability for autonomous navigation
3Adaptability or versatility
If conventional navigation systems are used, then infrastructure requirements are reduced, but device complexity and cost increase
Solution Approach 1:
The patent enables the autonomous movement device to navigate autonomously using only electromagnetic wave emissions from the target object and signal processing capabilities built into the device. The system estimates arrival directions of electromagnetic waves and determines movement paths without requiring external infrastructure support, making the device self-sufficient and adaptable to various environments
Solution Approach 2:
The patent creates a universal navigation system that works across diverse environments (indoor, outdoor, structured, unstructured) using a single electromagnetic wave-based approach. The same antenna elements and signal processing algorithms function regardless of environment, eliminating the need for environment-specific sensors or infrastructure adaptations
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the autonomous movement device to effectively reach targets in diverse environments, including indoor and outdoor spaces, while avoiding obstacles, using a cost-effective and straightforward setup that does not require pre-existing infrastructure or complex navigation systems.
Implementation Method 1
uses multiple antennas to receive and estimate the direction of radio waves or high-frequency electromagnetic waves emitted by a target object
Data Source
AI summary
The autonomous movement device includes: an reception unit that is an antenna unit configured to receive output information; an angle estimation unit configured to estimate an arrival direction of the output information; a reception strength determination unit configured to determine a reception strength of the output information in the estimated arrival direction; an operation control unit configured generate movement direction information including a movement direction for moving an autonomous movement device, according to the estimated arrival direction and a magnitude of or a change in the reception strength; and a drive unit configured to generate drive information corresponding to the movement direction information.