Robot Trajectory Display with Split Map Refresh Rates

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Solution Overview

Problem

In existing systems, the large amount of data in environmental maps results in a slow update of robot trajectories, leading to lagged real-time display on user terminals like smartphones and tablets, negatively impacting user experience.

Innovation Solution

The system separates environmental map data and trajectory data, with the user terminal acquiring and displaying the trajectory as foreground and environmental map as background, refreshing the trajectory more frequently than the map to ensure real-time updates, utilizing depth identification information and GPU processing for visual separation and optimization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If environmental map data and trajectory data are concluded in the same map data, then data structure is simplified, but trajectory update speed decreases and real-time display is lagged

Engineering Contradiction:

Improvedata structure complexityVSAvoidtrajectory update speed

Core Design Contradiction:

Device complexityVSSpeed

Solution Approach 1:

The patent divides the unified map data into two separate data structures: environmental map data and trajectory data. This segmentation allows independent processing and updating of trajectory information, enabling real-time display without being constrained by the large volume of environmental map data. The trajectory data structure includes position coordinates and timestamp, while environmental map data contains spatial information, allowing them to be processed at different frequencies.

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If environmental map data and trajectory data are concluded in the same map data, then data management is simplified, but display real-time performance deteriorates

Engineering Contradiction:

Improvedata management easeVSAvoiddisplay lag

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

By separating trajectory data from environmental map data, the system can manage each data type independently with appropriate update frequencies. Trajectory data is updated and displayed in real-time with high frequency, while environmental map data is updated at a lower frequency, eliminating display lag without complicating data management.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements different update frequencies for different data types. Trajectory data is refreshed at a higher frequency to ensure real-time display, while environmental map data is updated at a lower frequency since it changes less frequently. This periodic action with varying frequencies optimizes both real-time performance and data management efficiency.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS11249475B2Method and system for presenting trajectory of robot and environmental map

Publication Date: 2022.02.15 SHENZHEN FLY RODENT DYNAMICS INTELLIGENT TECH CO LTD

AI summary

Provided are a method and a system for presenting a trajectory of a robot and an environmental map, where environmental map data and data of trajectory of movement of the robot which are created by the robot are acquired by a user terminal, and further the environmental map is displayed as a background and the trajectory is displayed as a foreground on the user terminal, and the trajectory is refreshed at a frequency greater than that of the environment map, thereby solving the problem that the trajectory is updated slowly and cannot be displayed in real time with a lag, thereby improving the user experience.