Signal Processing Device Zone Trigger Segmentation
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Solution Overview
Problem
The existing zone trigger in signal processing devices decreases the acquisition rate of input signals and increases blind time, leading to potential missed trigger events, as it is applied as a post-processing technique.
Innovation Solution
A signal processing device with a second trigger unit located downstream of the acquisition memory, which applies a zone trigger to already acquired signals, ensuring maximum acquisition rate and minimizing blind time by filtering the signals based on user-defined zones without affecting the initial acquisition process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the zone trigger is applied as a post-processing technique before acquisition, then the signal filtering and event selection are improved, but the acquisition rate is decreased and blind time is increased
Solution Approach 1:
The trigger processing is segmented into two independent stages: a first trigger unit that generates trigger signals for acquisition, and a second trigger unit (zone trigger) that processes acquired signals. This segmentation allows the zone trigger to operate on already-acquired data without affecting the acquisition rate, resolving the contradiction between filtering precision and productivity.
Solution Approach 2:
The acquisition of signals is performed in advance using the first trigger unit before the zone trigger processing. By performing the acquisition action preliminarily, the system ensures that all potential events are captured at maximum acquisition rate, and the zone trigger subsequently filters these pre-acquired signals without causing any loss of events or increase in blind time.
2Reliability
If the zone trigger is applied before acquisition, then the event selection is improved, but trigger events may be missed due to decreased acquisition rate
Solution Approach 1:
Instead of applying the zone trigger before acquisition (the conventional approach), the invention inverts the sequence by applying it after acquisition. The second trigger unit processes the already-acquired signals from the acquisition memory, ensuring that no events are missed during acquisition while still achieving accurate event selection in the post-processing stage.
Solution Approach 2:
The zone trigger operates on a copy of the acquired signals stored in the acquisition memory, rather than on the original signal stream during acquisition. This allows the zone trigger to filter and select events from the stored data without interfering with the acquisition process, ensuring complete event capture while maintaining accurate event selection.
3Measurement precision
If the zone trigger is applied to filter acquired signals, then the analysis precision is improved, but the device complexity increases
Solution Approach 1:
The trigger system is divided into two separate trigger units: a first trigger unit for generating acquisition triggers and a second trigger unit (zone trigger) for filtering acquired signals. This segmentation distributes the functional complexity across independent modules, allowing each unit to be optimized for its specific function while maintaining overall system precision.
Data Source
AI summary
A signal processing device is described, with a signal input for receiving an input signal, a first trigger unit generating a trigger signal based upon a first trigger event in the input signal and an acquisition memory for acquiring the input signal at least based upon the trigger signal so as to provide an acquired signal. The signal processing device also comprises a second trigger unit connected to the acquisition memory. The second trigger unit is adapted to process the acquired signal according to a second trigger. The second trigger unit is adapted as a zone trigger unit applying a zone trigger. Further, a method of applying a zone trigger is described.