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- Title
Fabrication of fabric pressure sensor array and design of pressure distribution detection system.
- Authors
WANG Xiaodong; XU Songlin; PEI Zeguang
- Abstract
In order to solve the problem of falling detection for the elderly living alone, a low-cost fabric pressure sensing array and pressure distribution detection system are designed. Several silver plated conductive yarns were arranged on the front side of the fabric substrate at intervals along the warp direction, while another group of several silver plated conductive yarns were arranged above the first group at intervals along the weft direction. Pressure sensing units were printed at the intersection of two groups of silver plated conductive yarns. The electromechanical properties of the sensing unit was experimentally tested. A pressure distribution detection system based on the sensing array was designed using Arduino microcontroller unit and multiplexers to measure the resistances of all the sensing units in the array to obtain the distributed pressure value. The results show that the resistance of the sensing unit which exhibits a significant piezoresistive effect decreases exponentially as the pressure increases. The sensing unit the maximum measurable pressure of which can be 25 kPa has reliable electromechanical stability. The pressure distribution can be detected by the sensing array, which will lay a foundation for the subsequent detection of the fall of elderly people.
- Subjects
SENSOR arrays; PRESSURE sensors; PIEZORESISTIVE effect; ARDUINO (Microcontroller); LIVING alone; OLDER people
- Publication
Journal of Donghua University (Natural Science Edition), 2023, Vol 49, Issue 5, p63
- ISSN
1671-0444
- Publication type
Article
- DOI
10.19886/j.cnki.dhdz.2022.0180