Respiratory Monitoring Smart Vest Based on Flexible Pressure Sensor

A smart vest that can monitor the respiratory rate of the human body has been developed based on flexible sensing technology. Using carbon nanotubes/polyurethane conductive film/yarn electrode flexible pressure sensors, different sizes of smart underwear for men and women have been developed. These smart vest have the characteristics of being detachable and capable of real-time monitoring of human breathing frequency signals. The characteristics of the smart underwear are characterized by the resistivity change curve of the flexible sensor, and the influences of the style, size, and working position of the sensor on the performance of the smart underwear are studied. The most reasonable sensor configuration of the smart vest of each size is obtained. For the female S size it is on the chest. For the female M size it is on the abdominal muscles. For the male XL size it is on the midriff. For the male XXL size it is on the abdominal muscles. The smart vest is comfortable, fits the body and satisfies the daily needs of washing. It will have good application prospects in sports health and medical care, providing new design ideas for the research and development of smart vests.