Non-contact respiratory monitoring system using a ceiling-attached microwave antenna

被引:72
|
作者
Uenoyama, Maki [1 ]
Matsui, Takemi [1 ]
Yamada, Kouske [1 ]
Suzuki, Satoshi [1 ]
Takase, Bonpei [1 ]
Suzuki, Shinya [1 ]
Ishihara, Masayuki [1 ]
Kawakami, Mitsuyuki [1 ]
机构
[1] Tokyo Metropolitan Univ, Dept Management Syst Engn, Hino, Tokyo 1910065, Japan
关键词
respiration; monitoring; non-contact; microwave; nursing care;
D O I
10.1007/s11517-006-0091-8
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
Using a microwave antenna attached to the room ceiling, we conducted non-contact monitoring of respiratory chest wall motions of subjects in bed and covered by a soft comfortable bedding, to measure the vital signs of patients under nursing care in a welfare institution. Long-term vital sign monitoring using electrodes places a heavy burden on monitored individuals. Our non-contact respiratory monitoring system comprises a 1,215 MHz-microwave radar (LDR-1), antenna box attached to the ceiling, and personal computer with analyzing software. The system was tested on eight healthy volunteers (mean age, 25 years; range, 21-44 years) and eight elderly volunteers with some disorders (mean age, 69 years; range, 66-75 years). Respiratory rates of subjects measured using this system correlated with rates measured using respiration sensors (r = 0.97, P < 0.001 for healthy volunteers, r = 0.98, P < 0.0001 for elderly volunteers). The system could monitor subtle changes in respiratory rate, and monitoring respiratory rate increases caused by disorders such as pneumonia will be possible.
引用
收藏
页码:835 / 840
页数:6
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