期刊
IEEE SENSORS JOURNAL
卷 17, 期 20, 页码 6558-6564出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2017.2749233
关键词
Capacitive pressure sensor; belt type respiration sensor; PDMS based flexible electrode; porous ecoflex; real-time monitoring; wearable pressure sensor
资金
- Bio and Medical Technology Development Program of the NRF through Korean Government, MSIP [2017M3A9F1031270]
- Technology Innovation Program through Ministry of Trade, Industry and Energy, MI, South Korea [10065726]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10065726] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2017M3A9F1031270] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This paper presents the design, fabrication, and characterization of a wearable capacitive pressure sensor for respiration-monitoring systems. For the dielectric layer of the proposed capacitive sensor, Porous Ecoflex with a porosity of similar to 36% was prepared from a manually made sugar cube via a simple melting process. A polydimethylsiloxane-based silver nanowire and carbon fibers thin films were used for the sensor electrodes. The fabricated flexible pressure sensor exhibited a high sensitivity of 0.161 kPa(-1) for low pressure regime (<10 kPa), a wide working pressure range of <200 kPa, and a high durability over 6000 cycles. Since the proposed sensor is flexible and resizable, it can be integrated into clothes and easily placed at any location of the human body. Finally, the practicality of the sensor was successfully demonstrated by integrating the sensor into a waist belt to monitor the real-time respiration signal of the human being. The finding is highly useful to monitor respiration signal for the detection of diseases, such as sleep apnea, asthma, and others.
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