UAV Return Path Display During Communication Loss

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Solution Overview

Problem

The safety of unmanned aerial vehicle (UAV) return flights is a concern due to potential loss of communication between the UAV and the terminal device, which can hinder real-time planning and display of return paths, compromising the safety and efficiency of the return process.

Innovation Solution

The UAV performs real-time planning of a return path from its current position to a return position and transmits this path to a terminal device for display, allowing for continuous awareness of the planned return path even if communication is lost, enhancing safety by displaying the previously received path and enabling users to understand the planned return route promptly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If real-time transmission of return path is implemented, then user awareness of return path is improved, but communication reliability requirement increases

Engineering Contradiction:
Improvereturn path informationVSAvoidcommunication reliability
Core Design Contradiction:
Loss of informationVSReliability

Solution Approach 1:

The system performs preliminary action by displaying the return path information on the terminal device before communication is lost. The terminal device stores and displays the return path data that was received during the communication period, allowing users to see the planned return path even when the UAV subsequently loses communication. This ensures information is available in advance before the harmful condition (communication loss) occurs.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The terminal device creates a copy of the return path information received from the UAV. Instead of requiring continuous real-time communication to display the return path, the terminal device stores a copy of the path data and continues to display it even when communication with the UAV is lost. This copying mechanism decouples the display function from continuous communication, resolving the contradiction between information availability and communication reliability requirements.

Inventive Principle:
Principle #26Copying

2Ease of operation

If continuous real-time display is implemented, then operational control is improved, but energy consumption increases

Engineering Contradiction:
Improveoperational controlVSAvoidenergy consumption
Core Design Contradiction:
Ease of operationVSUse of energy by moving object

Solution Approach 1:

The system applies partial action by displaying return path information on the terminal device rather than maintaining continuous bidirectional real-time communication. The terminal device displays the return path data that was received and stored, providing sufficient operational awareness without the excessive energy consumption of continuous two-way communication. This partial display approach meets the operational control needs while consuming less energy than full real-time communication would require.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS20240302841A1Return flight method and apparatus of unmanned aerial vehicle, unmanned aerial vehicle, remote control device, system, and storage medium
Publication Date: 2024.09.12 SZ DJI TECH CO LTD
  • US20240302841A1 patent drawing
  • US20240302841A1 patent drawing
  • US20240302841A1 patent drawing

AI summary

A return method and device for an aerial vehicle are provided. The method includes: during a flight process of the aerial vehicle, performing real-time planning on a return path from a current position of the aerial vehicle to a return position; performing real-time transmission of the return path to a terminal device to display the return path on a display interface. The aerial vehicle plans the return path in real-time during flight and sends it in real-time to the terminal device for display. This allows users to timely understand the planned return path of the aerial vehicle. Even in the event of a loss of connection between the aerial vehicle and the terminal device, the terminal device can display the return path based on the previously received information, thereby enhancing the safety of aerial vehicle return.