Linear Guideway Vibration Sensing for Accurate Abnormality Detection
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Solution Overview
Problem
Conventional devices for detecting states of a linear guideway are susceptible to environmental influences, leading to lower sensing accuracy due to reliance on time-domain signals for abnormality determination.
Innovation Solution
A device and method that utilize sensors attached to or positioned adjacent to the side surfaces of a slide rail to detect vibrations, generating sensing signals, and an analysis processor compares these signals using multiple thresholds to determine abnormalities, reducing environmental interference and enhancing detection sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If time-domain signals are used for abnormality determination, then the detection mechanism is simple, but the sensing accuracy is low due to environmental susceptibility
Solution Approach 1:
The patent transforms the detection approach from time-domain signal analysis to frequency-domain analysis by comparing first and second sensing signals obtained from different measurement dimensions. This dimensional transformation enables more accurate abnormality determination while reducing environmental susceptibility, as the frequency-domain comparison can isolate true vibration signals from environmental noise.
2Measurement precision
If sensors are placed on the upper surface of the end of the slide rail, then the installation is simple, but the detection sensitivity is low due to environmental interference
Solution Approach 1:
The patent introduces a comparison mechanism that acts as an intermediary between the sensors and the abnormality determination. By comparing first and second sensing signals obtained from different positions or orientations, the system can identify true abnormalities while filtering out environmental interference, effectively using the comparison process as a mediator to eliminate harmful factors.
3Reliability
If a single sensor is used for detection, then the device complexity is low, but the detection reliability is reduced due to environmental susceptibility
Solution Approach 1:
The patent merges multiple sensing signals (first sensing signal and second sensing signal) into a unified abnormality determination process. By combining the information from multiple signals and comparing them against multiple thresholds, the system achieves higher detection reliability while maintaining a relatively simple overall device structure, as the complexity is managed through signal processing rather than hardware multiplication.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly improves detection sensitivity by comparing first and second sensing signals, allowing for more accurate abnormality detection with reduced environmental influence, enabling quicker identification of operational issues in linear guideways.
Implementation Method 1
at least one sensor located at a position (namely, facing the side surface of the slide rail, and being attached to or located a distance away from the side surface of the slide rail) corresponding to the side surface of the slide rail, and used to detect vibration of the slide rail to generate a sensing signal
Data Source
AI summary
A device and a method for detecting states of a linear guideway including a sliding block and a slide rail are provided. The device includes a sensor located at a position corresponding to a side surface of the slide rail, and an analysis processer communicated with the sensor. The sensor detects the vibrating of the slide rail to generate a sensing signal. The analysis processer compares the sensing signal with at least one threshold, to determines occurrence of abnormalities. Therefore, the sensitivity for detection may be increased.