- 著者
- Kunye Feng Zile Fan
- 出版者
- The Institute of Electronics, Information and Communication Engineers
- 雑誌
- IEICE Electronics Express (ISSN:13492543)
- 巻号頁・発行日
- vol.19, no.9, pp.20220094, 2022-05-10 (Released:2022-05-10)
- 参考文献数
- 38
- 被引用文献数
- 2
Breathing monitoring is important in the health and sports area. In this paper, a wireless self-powered health system for breathing monitoring is designed using the piezoelectric devices and buckled n-shape and L-shape structure. A cotton belt is used to tie the system to the chest and deliver the force stimulated by the chest cavity enlargement caused by the breathing, which can be collected and measured based on the three-dimension n-shape and L-shape structure. Three hard lead zirconate titanate (PZT) patches are used as the energy source to support the sensing circuit and soft piezoelectric polyvinylidene fluoride (PVDF) works as the sensor to measure the stretching force, which are placed at the gap between the 3D-printed n-shape and L-shape structure, making the measurement more precise. Breathing signal comparison between commercially used battery-powered respiration belts shows the efficiency of the piezoelectric devices on the accuracy, precision, and recall factors. The system is also used in practical experiments and it is found that the intense actions have a similar peak-peak value of breathing wavefront but a much higher frequency of respiration. This design can be used in health monitoring and sports training, which also shows the potential of data acquisition for disease diagnosis applications.
- 著者
- Yingxiang Gong Zile Fan
- 出版者
- The Institute of Electronics, Information and Communication Engineers
- 雑誌
- IEICE Electronics Express (ISSN:13492543)
- 巻号頁・発行日
- pp.19.20220431, (Released:2022-10-18)
- 参考文献数
- 41
- 被引用文献数
- 1
How to replace the referee in sports with artificial intelligence has attacked a huge amount of attention recently. In this paper, non-battery pressure detection and communication system are designed and fabricated aiming to help the referee in the basketball games. To get the information from player and ball at the same time, the designed system is consisted of three parts, including the basketball monitoring system, the shoes monitoring system, and the laptop to collect and process the data. For the basketball monitoring system, eight piezoelectric polyvinylidene fluoride (PVDF) flexible thin films are used as the sensor on the surface of the basketball with the sensitivity of 0.065 V/N and four hard piezoelectric Lead Zirconium titanite (PZT) patches are set inside the ball as the power source. As for the shoes monitoring system, four PZT patches work as both power source and pressure sensor with a sensitivity of 0.025 V/N. To solve the referee problem in basketball game, time delay of different systems is first measured. The different systems have similar time delay of about 3s, which will help to make sure whether the players break the rules. In this paper, whether the player has a traveling violation in a game can be refereed by the collected data, which has more than 97% accuracy. This work shows an innovative progress in automatic referees in games and the Internet of Things (IoT) in the human health monitoring.