Wired Drive-System Data Transfer With Oversampled Interference Detection
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Solution Overview
Problem
Existing data transmission methods in drive systems lack effective means to ensure secure and reliable communication, particularly in the presence of interference, which can lead to errors and disrupt data transmission.
Innovation Solution
The method involves digitally oversampling a received digital data stream to generate an evaluation signal that identifies unacceptably strong interference, using threshold values to determine error states and adapt transmission parameters to mitigate interference, enabling secure data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data transmission is performed via a wired data transmission channel in drive systems, then data communication can be established, but interference can occur leading to transmission errors and reduced reliability
Solution Approach 1:
The patent applies preliminary action by performing digital oversampling of the received data stream before evaluation. By sampling the signal at multiple points within each symbol period (e.g., 5-10 samples per symbol), the system proactively captures interference patterns before they can cause undetected errors, enabling early detection and mitigation of transmission issues
Solution Approach 2:
The patent implements feedback by continuously monitoring the quality of received symbols through correlation evaluation and comparing against threshold values. When interference is detected (quality metric falls below threshold), the system provides feedback to adjust transmission parameters such as reducing data rate, increasing symbol duration, or triggering retransmission, thereby adaptively maintaining reliable communication despite interference
2Measurement precision
If digital oversampling is performed to detect interference, then transmission quality can be monitored, but processing complexity increases
Solution Approach 1:
The patent applies the extraction principle by isolating and evaluating individual symbols from the continuous data stream. By extracting specific symbol periods and correlating them with expected patterns, the system focuses processing only on relevant portions of the signal rather than processing the entire stream, thereby maintaining high detection precision while reducing overall computational complexity
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting the number of samples per symbol and the evaluation threshold based on channel conditions. When interference is detected, the system can increase sampling rate or adjust correlation thresholds to maintain detection accuracy, while under normal conditions it operates with lower processing demands, thus adapting complexity to actual needs
Data Source
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AI summary
The invention relates to a method for transferring data via a data transfer channel, in particular a wired data transfer channel, and a drive system, wherein: - a transmitter transmits a digital data stream to a receiver via the data transfer channel; - the symbols of the data stream are transmitted in a first cycle; - the digital data stream received by the receiver is sampled, in particular in an analog manner, in a second cycle, the second cycle being faster than the first cycle; - for each symbol the sum of the sampled values is determined, and for each symbol a result value is determined which is HIGH if the sum exceeds a lower threshold value and is below an upper threshold value, and is otherwise LOW; - after a predefined number of HIGH result values belonging to symbols transferred one directly after the other over time has been exceeded, an output signal indicates an error state.