Signal Triggering Discriminator for Interference Detection
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Solution Overview
Problem
Existing measuring instruments and systems fail to identify interference-signal components in stochastic measured signals and trigger recording of such signals effectively, lacking a technical doctrine for distinguishing between correct and interference-laden signals.
Innovation Solution
A method and device that compare the frequency of registered signal levels with threshold values to activate trigger markers, identifying interference by determining if the frequency falls outside or within a tolerance range, and using logic-comparison units to confirm the presence of interference-signal components across parameter pairs and observation intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the frequency of registered signal levels is compared with threshold values to identify interference, then measurement precision is improved, but device complexity increases due to the need for discriminators, trigger markers, and logic-comparison units
Solution Approach 1:
The system divides the measured signal into multiple observation intervals and analyzes frequency content separately for each interval. Multiple parameter pairs (frequency, time, amplitude) are evaluated independently, with each producing trigger markers that are then integrated. This segmentation allows precise interference detection through cumulative evidence while keeping individual analysis units relatively simple.
Solution Approach 2:
The invention introduces multiple dimensions for signal analysis: time (multiple observation intervals), frequency (multiple parameter pairs), and amplitude (signal level ranges). By evaluating interference across these multiple dimensions and requiring consistent trigger markers in several dimensions before activation, the system achieves high measurement precision without requiring overly complex single-dimension processing.
2Reliability
If multiple parameter pairs and observation intervals are analyzed to confirm interference, then reliability of interference identification is improved, but loss of time increases due to extended analysis requirements
Solution Approach 1:
The system pre-defines threshold values and tolerance ranges for multiple parameter pairs before actual signal analysis begins. Reference measurements are taken in advance to establish expected signal characteristics. During operation, incoming signals are immediately compared against these pre-established criteria, allowing rapid trigger marker generation without real-time complex calculations, thus maintaining high reliability while minimizing time loss.
3Measurement precision
If trigger markers are accumulated across multiple parameter pairs before activation, then measurement precision is improved, but productivity decreases due to slower response to interference events
Solution Approach 1:
The system requires trigger markers from at least two different parameter pairs within the same or adjacent observation intervals before activating the interference identification. This partial accumulation requirement (not requiring all possible parameter pairs) provides sufficient precision for reliable detection while enabling faster response compared to requiring complete accumulation across all parameters. The system balances precision and speed by setting the threshold at a level that prevents false positives without causing excessive delay.
Data Source
AI summary
A device for triggering a recording of a measured signal dependent upon at least one triggering event identifiable in a occurrence distribution of parameter pairs from two mutually-dependent parameters of the measured signal includes a discriminator for the identification of triggering events in each case with one frequency (NofTreffer) determined for the respective parameter pair and, in a first embodiment, disposed outside, and in a second embodiment, disposed inside, an upper and lower threshold value (UpperNofTreffer, LowerNofTreffer) associated with the respective parameter pair and for marking each occurring triggering event with the assistance of an activated first trigger marker (TrigMerk1) associated with the respective parameter pair. A memory is used for buffering at least the upper and lower threshold value (UpperNofTreffer, LowerNofTreffer) for every parameter pair.