Force Detection Device With Intersecting Electrodes
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Solution Overview
Problem
Existing force detection devices lack the ability to subdivide the force detection area effectively, limiting their precision and accuracy in detecting forces across multiple regions.
Innovation Solution
A force detection device with a force sensor comprising a base, first and second circuit formation layers, and a sensor layer, where the detection electrodes are arranged in intersecting directions to create individual detection regions, allowing for the calculation of force across composite individual detection regions by overlapping areas of the first and second individual detection regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the detection area is subdivided into multiple individual detection regions, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The detection area is divided into multiple individual detection regions (first and second individual detection regions) that are spatially separated. Each region has its own detection electrodes and can independently detect force applied to that specific area, thereby improving measurement precision without requiring a completely new structural design.
Solution Approach 2:
Multiple individual detection regions are merged to form composite individual detection regions. When the first and second individual detection regions overlap in the third direction, they are combined into a composite region that calculates force values by integrating signals from both regions, reducing overall structural complexity while maintaining high measurement precision.
2Measurement precision
If multiple detection electrodes are used to create individual detection regions, then the measurement precision is improved, but the quantity of components increases
Solution Approach 1:
The detection electrodes in the first and second circuit formation layers serve multiple functions. The same electrodes contribute to forming both individual detection regions and composite individual detection regions. This multi-functionality allows the system to achieve high measurement precision through regional subdivision while avoiding a proportional increase in the total number of detection electrodes required.
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 precise detection of forces by subdividing the detection area, improving the accuracy and reliability of force measurement, and reducing the number of detection electrodes required.
Implementation Method 1
When force is applied to the force sensor, the sensor layer moves toward and comes into contact with the detection electrodes
Data Source
AI summary
A force detection device includes a force sensor to which a load is applied. The force sensor includes a base, a first circuit formation layer, a sensor layer, and a second circuit formation layer stacked in order, the first circuit formation layer includes a first surface facing the sensor layer, a plurality of first detection electrodes disposed on the first surface, and a plurality of first individual detection regions divided corresponding to the first detection electrodes, and the second circuit formation layer includes a second surface facing the sensor layer, a detection surface facing opposite to the second surface and to which the load is applied, a plurality of second detection electrodes disposed on the second surface, and a plurality of second individual detection regions divided corresponding to the second detection electrodes.