Tactile Sensor Circuit Board With Segmented Electrode Pads
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Solution Overview
Problem
Conventional tactile sensors require a large number of signal lines to accurately detect contact force and location, complicating their signal throughput and limiting their flexibility and ease of production.
Innovation Solution
A tactile sensor design featuring a circuit board with 2-dimensionally arranged unit electrode pads and a pressure sensing film, utilizing multiple circuit patterns to simplify signal connections and reduce the number of required signal lines, allowing for the detection of contact force, location, and multiple touch points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large number of signal lines are used to accurately detect contact force and location, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The electrode pad is divided into multiple independent electrodes (first electrode, second electrode, third electrode, fourth electrode) that can be independently controlled and measured. This segmentation allows the system to detect multiple touch points and determine their locations using fewer signal lines by activating different electrode combinations based on the touch position.
Solution Approach 2:
The patent introduces a sectional division dimension by dividing the electrode pad area into multiple sections (first section, second section, third section, fourth section). Each section is connected to dedicated signal lines, adding a spatial grouping dimension that reduces the total number of required signal lines while maintaining the ability to locate multiple touch points across the surface.
2Measurement precision
If a large number of signal lines are used to accurately detect contact force and location, then measurement precision is improved, but ease of manufacture deteriorates
Solution Approach 1:
The electrode pad is divided into multiple independent electrodes (first electrode, second electrode, third electrode, fourth electrode) that can be independently controlled and measured. This segmentation allows the system to detect multiple touch points and determine their locations using fewer signal lines by activating different electrode combinations based on the touch position.
Solution Approach 2:
The patent introduces a sectional division dimension by dividing the electrode pad area into multiple sections (first section, second section, third section, fourth section). Each section is connected to dedicated signal lines, adding a spatial grouping dimension that reduces the total number of required signal lines while maintaining the ability to locate multiple touch points across the 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
The design simplifies the pattern structure, reduces signal throughput complexity, and enables the detection of contact force and multiple touch points with fewer signal lines, enhancing the flexibility and production ease of tactile sensors.
Implementation Method 1
a pressure sensing film, which is disposed on an upper part of the plurality of 2-dimensionally arranged unit electrode pads
Data Source
AI summary
A tactile sensor includes: a circuit board; a plurality of unit electrode pads; and a pressure sensing film, in which the circuit board can include: a first circuit pattern, implemented by electrically connecting unit electrode pads disposed in a same column among the plurality of unit electrode pads arranged in a 2-dimensional configuration; a second circuit pattern, implemented by electrically connecting unit electrode pads disposed in a same row among the plurality of unit electrode pads arranged in a 2-dimensional configuration; a third circuit pattern, implemented by electrically connecting unit electrode pads disposed in a same section among the plurality of unit electrode pads arranged in a 2-dimensional configuration, if assuming that the entire area in which the plurality of unit electrode pads are arranged is divided by sections.