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Related Concept Videos

Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...

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Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing
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Research on Temperature Compensation Technology for a Flexible Capacitive Pressure Sensing System.

Jianyi Zheng1, Shuhan Chen1, Zhicheng Xia1

  • 1Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361102, China.

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|June 26, 2026
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Summary

A novel temperature-compensated flexible capacitive pressure sensing system was developed for aerospace applications. This system accurately measures pressure on curved surfaces under challenging thermal conditions, proving its feasibility for real-time monitoring.

Keywords:
aerospace monitoringflexible capacitive pressure sensor arraypressure field sensingsynchronous detectiontemperature compensationtime-division multiplexing

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Area of Science:

  • Aerospace Engineering
  • Materials Science
  • Sensor Technology

Background:

  • Real-time pressure measurement in aerospace vehicles is difficult due to the need for flexible sensors on curved surfaces under combined thermal and pressure loads.
  • Existing systems often struggle with accuracy and durability in these demanding environments.

Purpose of the Study:

  • To develop and validate a temperature-compensated flexible capacitive pressure sensing system for aerospace applications.
  • To address the challenges of real-time, distributed pressure monitoring on curved aerospace surfaces.

Main Methods:

  • Developed an 8 × 8 flexible sensor array integrated with a multi-channel readout circuit.
  • Employed time-division multiplexing and synchronous detection for signal processing.
  • Utilized a Particle Swarm Optimization-Backpropagation (PSO-BP) neural network for temperature compensation and data analysis.

Main Results:

  • Achieved high linearity in calibration with a correlation coefficient of 0.9998 and a maximum relative error of 2.23%.
  • Demonstrated an average measurement error below 6% under coupled temperature (10-110 °C) and pressure (5-150 kPa) conditions.
  • Successfully acquired in-flight data during flight experiments, showing pressure variations during key flight events.

Conclusions:

  • The developed temperature-compensated flexible capacitive pressure sensing system is feasible for distributed aerospace pressure monitoring.
  • The system offers high accuracy and reliability even under coupled thermal-pressure conditions.
  • This technology advances real-time sensing capabilities for aerospace vehicles.