Applying Sensors to Detect the Pressure and Temperature and Humidity between Plaster and Fake Arm

• Main Authors: Yu-Jing Chen, 陳育靖
• Other Authors: Chiu-Ching Tuan
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/w6em8g

碩士 === 國立臺北科技大學 === 電子工程系 === 106 === In recent years, the number of fractures has increased every year. Plasters are often required to treat fractures. If the plaster is wrapped too tight, the resulting compression may engender poor blood circulation or pain. In severe cases, even amputation may be happened. If the plaster is wrapped too loose, it cannot suitably treat fractures. Currently, clinicians can perform plaster therapy only through clinical experience. No device could provide reliable data regarding the pressure exerted by the plaster and its internal temperature and humidity. The purpose of this study is to design a device to measure the pressure, temperature and humidity caused by the plaster-wrapped on fake arm, and to provide an objective value for the clinician to practice wrapping the plaster. We used 6 sets of pressure and 1 set of temperature and humidity sensors. The fake arm will be used with experiments, and the membrane pressure sensor and the small temperature and humidity sensor will be selected. Verifying the experimental sensor is within the allowable range. The short arm cast and the short arm splint are used to fix the affected part. The sensors are attached to the fake arm to detect the plaster. The value of the wrapping process is visualized by the user interface, and the database system stores the time and value, providing the clinician could instantly obtain value of pressure and temperature and humidity. The pressure verification experiment proved that the numerical error is within 2%, the temperature error is within 1%, and the humidity error is within 4%. The results showed that the system value is reliable. The researcher used this system to measure the pressure value of the plaster wrapped in the fake arm is 12 g, and that of the healthy volunteers arm is 25 g wrapped by the clinician. The difference is 13 g may be caused by the way in the wrapping power. The abnormal pressure will be greater than 35 g, and the clinical pressure value is close to the 18.2 mmHg proposed in the literature. The experimental data will be collected later to provide the clinician for valuable reference and judgment.