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Waterproof Pressure Sensor Leveraging Nano-/Microdeformation of Microstructure under Pressure for Collecting
Lihong Wang1, Jiaxu Liu2, Shijie Wang1
1Shandong Key Laboratory of Intelligent Sensing Chip and System, Department of Electronic Engineering, Ocean University of China, Qingdao, Shandong 266100, China.
ACS Sensors
|June 1, 2026
Summary
This study introduces a novel flexible, waterproof sensor system for collecting underwater athlete physical signals. The system accurately captures subtle pulse vibrations and large muscle movements, aiding in health evaluation and training optimization.
Area of Science:
- Biomedical Engineering
- Wearable Technology
- Sports Science
Background:
- Underwater physical signal collection is vital for athlete health and training optimization.
- Existing underwater devices struggle to collect stable, accurate subtle pulse and large motion signals in complex aquatic environments.
Purpose of the Study:
- To develop a flexible, waterproof, and stable underwater human physical signal collection system.
- To enable simultaneous collection of subtle pulse signals and large motion data in water.
Main Methods:
- Proposed a flexible micropillar double-layer pressure sensor with integrated sensing and packaging layers.
- Developed a dual-mode sensing range for subtle and high-pressure detection with rapid response.
- Constructed an underwater physical signal collection device (UPCD) integrating the sensor with an information storage circuit board.
Main Results:
- The developed sensor accurately recognizes both subtle pulse vibrations and large-scale muscle expansion-contraction signals underwater.
- The dual-layer design effectively reduces water flow interference and enhances sensing performance for varied pressures.
- The UPCD successfully collected data enabling machine learning analysis of athlete training and physical conditions.
Conclusions:
- The proposed flexible micropillar double-layer pressure sensor system offers a stable and accurate solution for underwater physical signal collection.
- The developed underwater physical signal collection device (UPCD) can effectively estimate athlete status, assisting in optimizing training methods.
- This technology has significant potential for enhancing athlete performance monitoring and personalized training in aquatic sports.
