Force Sensing Device Actuation Structure Non-Flat Surface
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Solution Overview
Problem
Existing force measurement devices struggle to accurately detect the location and magnitude of forces applied to non-flat surfaces and surfaces where the force is not centered, as they require a flat surface and centered force application for precise readings.
Innovation Solution
A force sensing device comprising a plate with a sensor plate and actuation structures that compress to contact sensors when force is applied, allowing for the measurement of force location and magnitude using multiple sensors and a computing system that determines these values through sensor data analysis, either via a lookup table or algorithm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a flat surface and centered force application are required for accurate readings, then measurement precision is improved, but adaptability to different surface conditions and force application locations deteriorates
Solution Approach 1:
The force sensing device is divided into multiple independent sensors arranged in an array, with each sensor capable of detecting force independently. This segmentation allows the system to determine both the magnitude and location of applied forces by analyzing the pattern of sensor activations, eliminating the need for a flat surface or centered force application.
Solution Approach 2:
An actuation structure serves as an intermediary element between the input surface and the sensor array. This actuation structure transmits and distributes applied forces to the appropriate sensors, enabling accurate measurement regardless of the force application location on the input surface.
2Adaptability or versatility
If multiple sensors and actuation structures are added to improve measurement capability, then adaptability to different force locations is improved, but device complexity increases
Solution Approach 1:
The actuation structure serves multiple functions simultaneously: it acts as a mechanical coupling element, a force distribution mechanism, and a positioning guide for the sensor array. This multi-functionality reduces the need for separate components and simplifies the overall device architecture while maintaining high adaptability.
Solution Approach 2:
The sensor array and actuation structure are integrated into a unified assembly where the actuation structure directly interfaces with the sensor elements. This merging of functions and components reduces device complexity while enabling precise force location detection across the input surface.
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 accurate determination of force magnitude and location on non-flat surfaces, improving the precision of force measurements by using multiple sensors and actuation structures to redirect and spread forces for consistent data generation.
Implementation Method 1
a first force applied to the plate causes the actuation structure to directly contact and apply a second force to the sensor
Data Source
AI summary
A force sensing device may include a plate and a sensor plate. The sensor plate may be a first surface coupled to the plate and a second surface opposite the first surface. The sensor plate may also include an actuation structure coupled to the second surface and extending away from the second surface of the sensor plate. The force sensing device may further include a sensor aligned with the sensor plate such that a first force applied to the plate causes the actuation structure to directly contact and apply a second force to the sensor. The force sensing device may be used to determine a location, a magnitude, and/or an angle of the force applied on the plate.