Time Point Acquisition for Railway Bridge Entry Exit Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for diagnosing the state of social infrastructure, such as railway bridges, face challenges in accurately determining the entry and exit time points of moving objects, which are crucial for evaluating structural performance and weight analysis.
Innovation Solution
A time point acquisition system that includes sensors to measure acceleration data, a server device to process this data, and algorithms to remove vibration components, allowing for the precise determination of entry and exit time points of moving objects on a bridge by analyzing time-series data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If vibration components are not removed from time-series data, then the data contains complete information about structure response, but the entry and exit time points of moving objects cannot be accurately determined
Solution Approach 1:
The patent segments the time-series data processing into distinct stages: first removing vibration components to isolate the moving object's passage signal, then determining entry and exit time points from the processed data. This segmentation allows accurate time point determination while managing the information loss through systematic data processing steps.
2Ease of operation
If simple processing is used to acquire entry and exit time points, then the processing is easy to implement, but accurate determination of time points becomes difficult when vibration components are present in the data
Solution Approach 1:
The patent applies preliminary action by removing vibration components from the time-series data before attempting to determine entry and exit time points. This preprocessing step simplifies the subsequent time point detection by eliminating distracting vibration signals, making the overall process easier to implement while maintaining high accuracy.
Data Source
AI summary
A time point is acquired by steps including a data acquisition step of acquiring time-series data indicating a time change of a displacement of a structure based on a physical quantity generated at a predetermined observation point in the structure as a response caused by a movement of a formation moving object formed with one or more moving objects on the structure; a removing step of removing a vibration component included in the time-series data; and a time point acquisition step of acquiring an entry time point at which the formation moving object enters the structure and an exit time point at which the formation moving object exits from the structure, based on the time-series data after the vibration component is removed.