Robot Ground Marking With Local GNSS Base Station Correction

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Solution Overview

Problem

Current line marking systems using GPS signals face limitations in accuracy due to satellite measurement errors and ionospheric delays, and are hindered by the need for reference base stations, which can be sparse and unreliable, especially in areas with limited cellular coverage.

Innovation Solution

A method utilizing a local base station with a GNSS receiver to establish a system reference point, allowing a robot unit to receive global positioning data and correct for inaccuracies, enabling precise marking of ground surfaces even without external dependencies like cellular data or reference networks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If GPS signals are used for position determination, then the system can operate autonomously, but the accuracy is limited to a few meters due to satellite measurement errors and ionospheric delays

Engineering Contradiction:

Improveautonomous operationVSAvoidpositioning accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

A local base station is introduced as an intermediary between GPS satellites and the robot unit. The base station receives GPS signals and transmits correction data to the robot unit, enabling high-precision positioning while maintaining autonomous operation without dependency on external reference networks

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system implements feedback by continuously receiving correction data from the local base station and applying it to adjust the robot unit's position calculations, thereby maintaining high positioning accuracy throughout operation

Inventive Principle:

Principle #23Feedback

2Measurement precision

If external reference base stations are used for high precision positioning, then measurement accuracy improves, but the system becomes unreliable in areas with limited cellular coverage

Engineering Contradiction:

Improvepositioning accuracyVSAvoidoperational reliability

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The system extracts the reference base station functionality from external networks and implements it locally. The local base station operates independently without requiring cellular data or external reference networks, ensuring reliable high-precision positioning in remote areas

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The local base station serves itself by autonomously receiving GPS signals and generating correction data without external assistance. This self-service capability ensures the system remains operational in areas with limited or no cellular coverage

Inventive Principle:

Principle #25Self-service

3Adaptability or versatility

If manually operated vehicles are used for marking, then flexibility is maintained, but labor intensity increases and marking precision decreases

Engineering Contradiction:

Improveoperational flexibilityVSAvoidmarking efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent replaces manual mechanical operation with an automated robot unit guided by high-precision positioning. The robot unit autonomously performs marking operations based on predefined patterns, eliminating manual labor while maintaining flexibility through programmable control

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Adaptability or versatility

If manually positioned line marks are used for alignment, then adaptability is maintained, but labor burden increases and alignment precision decreases

Engineering Contradiction:

Improvepattern alignment flexibilityVSAvoidalignment accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The system replaces manual positioning and alignment with automated computer-controlled positioning. The robot unit calculates precise positions based on GPS coordinates and predefined patterns, eliminating manual alignment operations while maintaining adaptability through programmable pattern design

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20240219910A1Method for marking a ground surface using a robot unit and a local base station, the system therefore and use thereof

Publication Date: 2024.07.04 INTELLIGENT MARKING APS

AI summary

Provided is a method for marking a ground surface according to a predefined marking pattern using a system including a robot unit and a local base station including acts of providing two flag points, receiving global positioning data of the robot unit using a robot GNSS receiver, receiving global positioning data of the local base station using a base GNSS receiver, and establishing a local base station position using the received global positioning data of the local base station. A method wherein the predefined marking pattern is arranged relative to the two flag point positions and wherein the local base station position is a system reference point of the system. Also provided is a system for marking a ground surface according to a predefined marking pattern and the use thereof or parts thereof.