Bicycle Sensor Spatial Isolation for Temperature Compensation
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Solution Overview
Problem
Existing bicycle component stress/strain measurement systems face inaccuracies due to temperature fluctuations, as temperature sensors are often affected by mechanical stresses and have limited reliability when integrated with strain sensors in the same plane.
Innovation Solution
The solution involves positioning stress/strain sensors and temperature sensors in non-coinciding, non-parallel planes, preferably orthogonal to each other, to maximize mechanical stress detection while minimizing temperature sensor exposure to mechanical stresses, ensuring accurate temperature compensation for stress/strain measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature sensors are positioned in the same plane as strain sensors for temperature compensation, then temperature measurement capability is improved, but the temperature sensors are exposed to mechanical stresses which reduces measurement reliability
Solution Approach 1:
The patent positions the temperature sensor in a plane that is not coincident with and not parallel to the plane of the strain sensors. This spatial arrangement in three-dimensional space allows the temperature sensor to be thermally coupled to the component for accurate temperature measurement while being mechanically isolated from the high-stress regions where strain sensors are located, thus resolving the contradiction between temperature measurement accuracy and sensor reliability
Solution Approach 2:
The patent introduces an intermediary substance (thermal conductive compound or thermally conductive material) between the temperature sensor and the component surface. This intermediary enables thermal coupling for accurate temperature sensing while providing mechanical isolation that protects the temperature sensor from stresses, thereby maintaining both measurement precision and reliability
2Measurement precision
If strain sensors are positioned on surfaces subjected to high mechanical stresses for maximum detection capability, then stress/strain detection precision is improved, but temperature sensors in the same plane are exposed to harmful mechanical stresses
Solution Approach 1:
The patent utilizes three-dimensional spatial arrangement by positioning the temperature sensor in a plane that is neither coincident nor parallel to the strain sensor plane. This dimensional separation allows the strain sensors to be optimally positioned on high-stress surfaces for maximum detection capability while the temperature sensor remains in a lower-stress region, reducing exposure to harmful mechanical stresses
Solution Approach 2:
The patent extracts the temperature sensor from the high-stress plane where strain sensors are located. By removing the temperature sensor from the coincident plane and positioning it in a non-parallel plane, the temperature sensing function is maintained while the harmful mechanical stress exposure is eliminated, allowing strain sensors to operate at maximum detection capability
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
This configuration enhances the reliability of temperature-compensated stress/strain measurements by isolating temperature sensors from mechanical stresses, providing more accurate and reliable data in bicycle components like crankarms.
Implementation Method 1
a stress/strain sensor (238) aligned according to a stress/strain to be detected
Implementation Method 2
a temperature sensor (239) associated with said stress/strain sensor (238)
Data Source
AI summary
A bicycle component comprising a stress/strain sensor aligned according to a stress/strain to be detected, and a temperature sensor associated with said stress/strain sensor, wherein said stress/strain sensor and said temperature sensor lie in planes that do not coincide with one another and are not parallel to each another.