Moving Body Optical Wireless Communication Axis Control
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Solution Overview
Problem
Optical wireless communication in moving bodies, such as unmanned aerial vehicles, is prone to disruption when the optical axis is blocked, and existing technologies lack effective methods to maintain stable communication in such scenarios.
Innovation Solution
The implementation of sensors like cameras, millimeter wave radar, and LiDAR to detect objects blocking the optical axis, sharing this information via optical or radio wave communication to adjust the movement of the vehicles and maintain a clear line of sight for communication, ensuring continuous optical wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If optical wireless communication is used between moving bodies, then high-speed communication capability is achieved, but communication is disrupted when the optical axis is blocked by objects
Solution Approach 1:
The system performs preliminary detection of objects that may block the optical axis using sensors (cameras, millimeter wave radar, LiDAR) before the blockage actually occurs. By sharing this detection information between communication devices and predicting potential blockages, the system can take preventive actions to maintain communication stability while preserving high-speed communication capability.
2Reliability
If sensors are added to detect objects blocking the optical axis, then communication stability is improved, but device complexity increases
Solution Approach 1:
The patent employs sensors with multi-functional capabilities: cameras serve both optical wireless communication and object detection purposes, while millimeter wave radar and LiDAR provide both navigation/obstacle avoidance and communication blockage detection functions. This multi-functionality approach improves communication stability without proportionally increasing device complexity, as the same hardware components perform multiple tasks.
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
This approach allows for the prevention of communication blockages by dynamically adjusting the movement of the vehicles, ensuring stable optical wireless communication even when obstacles approach the optical axis, and enables communication reconnection by changing the relative positions of the vehicles.
Implementation Method 1
sensors (such as a camera) that detect an object around the own moving body
Implementation Method 2
sensors (such as a millimeter wave radar) that detect an object around the own moving body
Implementation Method 3
sensors (such as a LiDAR) that detect an object around the own moving body
Data Source
AI summary
There is provided a moving body including: an optical wireless communication unit configured to execute an optical wireless communication with another moving body; an object detection unit configured to detect an object around an own moving body; an object information transmission unit configured to transmit, to the other moving body, first object information including location information of the object, by the optical wireless communication or a radio wave communication; an object information receiving unit configured to receive, from the other moving body, second object information including location information of an object around the other moving body, by the optical wireless communication or the radio wave communication; and a movement control unit configured to control, based on the first object information and the second object information, a movement of the own moving body such that an object is not located on an optical axis of the optical wireless communication.