Design of a wearable respiratory inductive plethysmograph and its applications

• Published in: Hang tian yi xue yu yi xue gong cheng Vol. 19; no. 5; pp. 377 - 381
• Main Authors: Zhang, Zheng-Bo, Yu, Meng-Sun, Li, Ruo-Xin, Wu, Tai-Hu, Wu, Jia-Long
• Format: Journal Article
• Language: Chinese; English
• Published: 01.10.2006
• ISSN: 1002-0837

To develop a new type of respiratory inductive plethysmograph to achieve high signal-noise rate(SNR) and low system power cost, and also to eliminate the cross-talk between chest and abdominal band sensors. Method: Either of the two bands was powered by a very high power oscillator in a very short time,and these two bands were switched on in turn.The sensor structure of the respiratory inductive plethysmograph was modified so that these two bands could be embedded in a shirt conveniently. Result: With these new designs, the cross-talk between these two bands was greatly eliminated and high SNR and lowsystem power cost were achieved. This new wearable respiration monitoring system is easy to use, and can be used for long time and ambulatory monitoring. Conclusion: This new system meets the design requirement with excellent performance. With this new wearable respiration monitoring system, non-invasive measurementof ventilation and non-intrusive detection of sleep apnea event can be achieved.