Layered Map Data Transmission for Cleaning Device Bandwidth Reduction
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Solution Overview
Problem
Existing cleaning devices face inefficiencies in transmitting real-time map data due to high network bandwidth requirements, leading to poor transmission effectiveness and delays.
Innovation Solution
The method involves dividing map data into layers, extracting and sending only changed data layers to a cloud server, where it is updated and stitched with existing data, reducing bandwidth usage and transmission volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If complete map data is transmitted in real-time during cleaning process, then user can view cleaning progress, but network bandwidth consumption increases significantly
Solution Approach 1:
The patent segments map data into multiple map layers (e.g., obstacle layers, cleaning status layers, trajectory layers) and transmits only the changed portions of each layer separately. This segmentation allows differential transmission where only modified map layer data is sent, significantly reducing overall transmission volume while maintaining complete map information availability.
Solution Approach 2:
The patent extracts only the changed map layer data from the complete map data before transmission. By identifying and extracting only the differential portions (changes since last transmission), the system sends minimal necessary data to keep the user terminal synchronized without transmitting redundant unchanged information.
2Speed
If complete map data is transmitted frequently, then real-time cleaning progress is available, but transmission delay increases due to bandwidth limitations
Solution Approach 1:
By segmenting map data into layers and transmitting only changed portions, the actual transmission volume is reduced, allowing faster transmission speeds and shorter delays despite frequent updates. The segmented approach enables parallel processing and reduces queueing delays.
Solution Approach 2:
The patent transmits only the necessary partial data (changed map layer portions) rather than complete map data. This partial transmission approach achieves the goal of real-time progress tracking with minimal data, reducing transmission time and delay while maintaining sufficient information for user visualization.
3Loss of energy
If map data is divided into layers and only changed data is transmitted, then bandwidth consumption is reduced, but data processing complexity increases
Solution Approach 1:
While segmentation into layers adds initial processing steps, it simplifies subsequent transmissions by organizing data into manageable, independently transmittable units. The layered structure enables efficient differential comparison and reduces the complexity of handling large monolithic data blocks.
Solution Approach 2:
The patent performs preliminary actions by pre-dividing map data into layers and pre-identifying change regions before transmission. This preliminary organization and change detection, done locally on the cleaning device, reduces the complexity of remote processing at the user terminal since the data arrives already structured and filtered.
Data Source
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AI summary
The present application describes one or more map data transmission methods, cleaning devices and storage media. A method may comprise: obtaining a first map data corresponding to a current cleaning position and a second map data corresponding to a previous cleaning position. Both the first and second map data may be divided into at least two map layers. The method may comprise extracting a first map layer data from the first map data and extracting a second map layer data from the second map data. The method may further comprise obtaining the changed first map layer data with respect to the second map data of the same map layer; and sending the changed first map layer data to a computing device (e.g., a cloud server).