Lateral Rollover Detection via Vibration Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods struggle to determine the lateral rollover danger of vehicles with unclear weight or weight distribution, as they rely on specific weight or distribution data.
Innovation Solution
A lateral rollover limit detection system that calculates a limit center-of-gravity height using a reference plane supported by elastic forces, detecting up-down and rotational motions to determine the lateral rollover limit height, allowing for the assessment of rollover danger in structures without pre-defined weight distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If prior art methods using roll angle and roll angular velocity are used, then lateral rollover danger can be detected for vehicles with clarified weight distribution, but it becomes impossible to determine lateral rollover danger for structures with unknown weight or weight distribution
Solution Approach 1:
The patent replaces traditional mechanical measurement methods (roll angle sensors, roll angular velocity sensors) with a vibration-based detection system. By measuring vertical vibration characteristics and applying dynamic analysis, the system can calculate the lateral rollover limit height without requiring direct mechanical measurement of weight distribution, thus enabling detection for structures with unknown weight characteristics.
Solution Approach 2:
The patent transforms the detection approach by changing from direct measurement of static parameters (roll angle, weight distribution) to measurement of dynamic parameters (vertical vibration frequency, vibration amplitude). This parameter transformation allows the system to infer stability characteristics from vibrational behavior, making it applicable to structures regardless of their weight distribution.
2Reliability
If traditional roll angle and roll angular velocity detection methods are used, then lateral rollover region can be identified on a two-dimensional map, but the method cannot be applied to structures without pre-defined weight characteristics
Solution Approach 1:
The patent creates a universal detection method that can determine lateral rollover limit height for any structure regardless of its weight characteristics. By using vertical vibration analysis rather than structure-specific weight data, the system achieves multi-functionality applicable to vehicles, machinery, and other structures with unknown weight distribution.
Solution Approach 2:
The patent introduces vertical vibration characteristics as an intermediary parameter that bridges the gap between unknown weight distribution and determinable stability characteristics. The vibration frequency and amplitude serve as mediators that allow calculation of the lateral rollover limit height without directly measuring weight or weight distribution.
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
Enables the determination of lateral rollover danger in vehicles with unknown weight distribution by calculating a limit center-of-gravity height, providing a method to assess and report the risk of lateral rollover effectively.
Implementation Method 1
a reference plane supported with an elastic force on both sides of a reference axis
Implementation Method 2
an up-down direction detection means for detecting a reciprocating motion in an up-down direction of the reference plane
Data Source
AI summary
Provided is a lateral rollover limit detection system which can determine the lateral rollover danger of a structure for which the weight or the weight distribution has not been clarified. A placement board, springs, and detection object are provided as a structure in which the placement board is supported with springs on both sides of an oscillation central axis with an acceleration sensor for detecting the reciprocating motion in an up-down direction of the placement board, and an arithmetic part which, on the basis of the inclination angle of the placement board in a direction of rotation around the oscillation central axis with respect to the horizontal plane in a standstill state of the detection object and the detection result by the acceleration sensor, calculates a limit center-of-gravity height beyond which the detection object is rolled over for a center-of-gravity location on the placement board of the structure being provided.