High-Resistance Sensor Contact Design for Low-Power Accurate Measurement
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Solution Overview
Problem
Existing force-sensitive sensors face issues with power consumption and measurement errors due to differences in trace resistances, leading to calibration drift and cross-channel effects, which affect signal accuracy and resolution.
Innovation Solution
A high-resistance sensor design incorporating low-resistance materials separated by a gap with a high-resistance material positioned within the gap, forming a circuit upon stimulus application, mitigating stray impedances and increasing sensitivity and resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If low-resistance materials are used for conductors, then power consumption increases and cross-channel effects occur, but measurement precision deteriorates due to calibration drift
Solution Approach 1:
The patent changes the resistance parameter of the conductor material from low-resistance to high-resistance. This parameter change directly addresses the technical contradiction by reducing power consumption and eliminating cross-channel effects while maintaining measurement precision through the high-resistance material's inherent stability against calibration drift.
Solution Approach 2:
The patent applies local quality by using high-resistance material specifically in the conductor regions where stability is critical, while allowing other parts of the sensor to maintain their original properties. This localized material selection resolves the contradiction by improving power efficiency and measurement stability in the critical conduction paths without compromising overall sensor function.
2Loss of energy
If high-resistance material is used, then power consumption reduces and cross-channel effects are minimized, but device complexity increases due to material selection and circuit design
Solution Approach 1:
The patent simplifies device complexity by making a straightforward parameter change from low-resistance to high-resistance material. This single parameter change simultaneously reduces power consumption and eliminates cross-channel effects without requiring complex circuit designs or additional components, thereby resolving the contradiction between energy efficiency and device simplicity.
3Measurement precision
If traditional sensor design is used, then manufacturing is simpler, but measurement accuracy deteriorates due to sensor hysteresis and trace resistance differences
Solution Approach 1:
The patent improves measurement accuracy by changing the material parameter from low-resistance to high-resistance. This parameter change eliminates trace resistance differences and reduces sensor hysteresis, thereby improving measurement accuracy while maintaining ease of manufacture through the use of standard high-resistance materials and conventional fabrication techniques.
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 high-resistance sensor design reduces power consumption and enhances signal accuracy and resolution by minimizing cross-channel effects and sensor hysteresis, improving measurement precision.
Implementation Method 1
A high-resistance material is positioned within the gap intermediate the first low-resistance material and the second low-resistance material. The high-resistance material increases the resistance of a circuit formed by contact between the first low-resistance material and the second low-resistance material when the sensor is subject to the stimulus.
Data Source
AI summary
A high-resistance sensor. The sensor includes a first low-resistance material and a second low-resistance material, each connected with a base material. The first low-resistance material and the second low-resistance material are separated by a gap. A stimulus causes the first low-resistance material and the second low-resistance to move toward each other. A high-resistance material is positioned within the gap intermediate the first low-resistance material and the second low-resistance material. The high-resistance material increases the resistance of a circuit formed by contact between the first low-resistance material and the second low-resistance material when the sensor is subject to the stimulus.