Post-Collection Synchronization of Machine Vibration Data
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Solution Overview
Problem
Existing machine monitoring systems face challenges in achieving precise post-collection synchronization of data from multiple sensors due to the inaccuracy of timestamps, which is insufficient for meaningful analysis.
Innovation Solution
A system that utilizes tachometer timing information, combined with timestamps, to synchronize data from multiple sensors by generating and aligning timing pulses, allowing for accurate post-collection synchronization of machine data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If timestamp is used for post-collection synchronization, then data collection is simple, but synchronization accuracy is insufficient
Solution Approach 1:
The patent introduces a tachometer signal as an intermediary reference that mediates between multiple sensors. This reference signal provides precise timing markers that all sensors can align to, resolving the contradiction by maintaining simple data collection while achieving high synchronization accuracy through the intermediary reference.
Solution Approach 2:
The patent replaces the inadequate timestamp-based synchronization system with a tachometer signal-based system. The tachometer provides mechanical/physical timing references that are inherently more accurate than software timestamps, substituting one synchronization mechanism for another with superior precision.
2Measurement precision
If data is synchronized at the time of acquisition, then synchronization accuracy is high, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by embedding timing references from the tachometer signal into the data collection process itself. By pre-synchronizing all sensors to the same reference signal before data acquisition begins, the system achieves high synchronization accuracy without requiring complex post-processing synchronization operations.
Data Source
AI summary
A machine data collection system uses tachometer timing information to perform post-collection synchronization of measurement data that was collected asynchronously using multiple sensors. In machine predictive analysis systems, timing information derived from a tachometer signal is typically used to make measurement calculations per rotation. A tachometer key signal that is detected by an event-triggered digital input can also be used to post-synchronize measurement data. Although a timestamp is not accurate enough alone for post-collection synchronization, the combination of a tachometer key signal and a timestamp can be accurate enough for post-collection synchronization.