Resilient Force Sensor Mat Structure Against Creasing
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Solution Overview
Problem
Traditional force sensor mats suffer from creasing, wrinkling, or folding after prolonged use, leading to inaccuracies in force measurements and reduced lifespan.
Innovation Solution
A resilient force sensor mat design featuring top and bottom protective layers with a Young's modulus of 0.1-200 GPa, along with fixing mechanisms like pins, resin columns, or sewing threads, to prevent creasing and wrinkling, ensuring durability and precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional force sensor mat is used, then force measurement function is achieved, but creasing and wrinkling occur after prolonged use
Solution Approach 1:
A protective layer with higher Young's modulus (0.1-200 GPa) is applied to the force sensor mat surface before use. This protective layer preemptively resists applied forces that would cause creasing or wrinkling, thereby maintaining surface smoothness and preventing measurement inaccuracies during prolonged use.
2Stability of the object's composition
If protective layer is added to prevent creasing, then surface smoothness is maintained, but device complexity increases
Solution Approach 1:
A thin film protective layer with Young's modulus of 0.1-200 GPa is applied to the force sensor mat. This thin film structure provides sufficient resistance against creasing and wrinkling while adding minimal structural complexity and maintaining the flexibility needed for force measurement applications.
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 design maintains measurement precision and reliability under varying environmental conditions, resisting deformation and maintaining longevity.
Implementation Method 1
The protective layer is configured to minimize the formation of creases or wrinkles from occurring on the force sensor unit
Data Source
AI summary
A resilient force sensor unit is disclosed, the force sensor unit has a thin film force sensing element sandwiched between a top substrate and a bottom substrate. A first protective layer is configured on a bottom surface of the bottom substrate, and a second protective layer is configured on a top surface of the top substrate. The protective layer helps prevent potential creases or wrinkles from occurring on the force sensor unit. Complete folding of the sensor device becomes less possible due to the additional thickness/hardness of the stacked material layers, thereby lowering the chance a crease is formed during use.