Construction Machine Signal Quality Mapping for Reliable GNSS Control
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Solution Overview
Problem
Self-propelled construction machines face challenges in accurate positioning due to interference with GNSS and mobile phone signals, leading to potential downtimes and increased costs, as existing solutions lack effective methods for evaluating and improving signal quality in real-time.
Innovation Solution
Integration of a GNSS evaluation device and mobile radio evaluation device within the construction machine to assess signal quality, generating telemetry data sets that are stored in the cloud for later analysis, allowing for informed planning and adjustments in subsequent work processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GNSS positioning is used for automatic control of construction machinery, then positioning accuracy is improved, but signal reception is disrupted by shadows from trees or buildings
Solution Approach 1:
The patent introduces an intermediary evaluation system that mediates between the GNSS positioning system and the automatic control system. This evaluation device assesses signal quality and provides intermediate information to determine when GNSS data is reliable enough for control purposes, bridging the gap between disrupted signals and reliable positioning.
Solution Approach 2:
The patent implements a feedback mechanism where the evaluation device continuously monitors GNSS signal quality and feeds this information back to the control system. This feedback loop allows the system to adapt to varying signal conditions and make informed decisions about using GNSS positioning data.
2Extent of automation
If mobile radio communication is used for transmitting control data, then automated control is enabled, but mobile radio signal reception is disrupted on construction sites
Solution Approach 1:
The patent applies preliminary action by evaluating mobile radio signal quality in advance before critical control operations. The evaluation device assesses signal conditions proactively, allowing the system to prepare alternative communication methods or adjust control strategies before signal disruptions affect automated operation.
Solution Approach 2:
The patent changes the parameter being monitored from simple signal presence to comprehensive signal quality evaluation. By assessing multiple parameters of mobile radio signal quality, the system can make more informed decisions about maintaining automated control despite varying reception conditions.
3Productivity
If signal quality evaluation is implemented, then operational efficiency is improved, but device complexity increases
Solution Approach 1:
The patent achieves universality by designing an evaluation device that can assess multiple types of signals (GNSS and mobile radio) using a unified approach. This multi-functional evaluation system improves operational efficiency across different communication and positioning systems without requiring separate complex evaluation mechanisms for each.
Data Source
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AI summary
The invention relates to a self-propelled construction machine, in particular a road milling machine, for preparing the ground or constructing a structure on the ground in a preceding work process, which is followed by another work process with a different construction machine. Furthermore, the invention relates to a system comprising a self-propelled construction machine and a cloud storage system 18 of an internet service provider, as well as a method for preparing the ground. The construction machine 1 according to the invention comprises a mobile communication device 12, a GNSS receiver 9, a GNSS evaluation device 13 or mobile communication evaluation device 15, and a GNSS evaluation parameter acquisition device 14 or mobile communication parameter acquisition device 16. The GNSS evaluation device 13 or 15The mobile communication evaluation device 15 is configured such that, during the advancement of the construction machine, at least one evaluation parameter B assessing the quality of the GNSS signals or the mobile communication signal at the respective location is determined at a plurality of locations in the field, and the GNSS evaluation parameter acquisition device 14 or the mobile communication parameter acquisition device 16 is configured such that a spatially referenced (georeferenced) telemetry data set describing the quality of the signals at the respective locations is generated using the position data determined by the GNSS receiver 9 at the respective locations in the field.