Wang Chongqi, Wang Yu, Pu Wei, Qiu Lei
Research Center of Structural Health Monitoring and Prognosis, State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
Sensors (Basel). 2024 Dec 14;24(24):7993. doi: 10.3390/s24247993.
The aircraft smart skin (ASS) with structural health monitoring capabilities is a promising technology. It enables the real-time acquisition of the aircraft's structural health status and service environment, thereby improving the performance of the aircraft and ensuring the safety of its operation, which in turn reduces maintenance costs. In this paper, a miniaturized and ultra-low-power wireless multi-parameter monitoring system (WMPMS) for ASS is developed, which is capable of monitoring multiple parameters of an aircraft, including random impact events, vibration, temperature, humidity, and air pressure. The system adopts an all-digital monitoring method and a low-power operating mechanism, and it is integrated into a low-power hardware design. In addition, considering the airborne resources limitations, an energy self-supply module based on a thermoelectric generator (TEG) is developed to continuously power the system during flight. Based on the above design, the system has a size of only 45 mm × 50 mm × 30 mm and an average power consumption of just 7.59 mW. Through experimental validation, the system has excellent performance in multi-parameter monitoring and operating power consumption, and it can realize the self-supply of energy.
具备结构健康监测能力的飞机智能蒙皮（ASS）是一项很有前景的技术。它能够实时获取飞机的结构健康状况和服役环境，从而提高飞机性能并确保其运行安全，进而降低维护成本。本文开发了一种用于ASS的小型化、超低功耗无线多参数监测系统（WMPMS），该系统能够监测飞机的多个参数，包括随机撞击事件、振动、温度、湿度和气压。系统采用全数字监测方法和低功耗运行机制，并集成到低功耗硬件设计中。此外，考虑到机载资源限制，开发了一种基于热电发电机（TEG）的能量自供应模块，以便在飞行过程中持续为系统供电。基于上述设计，该系统尺寸仅为45毫米×50毫米×30毫米，平均功耗仅为7.59毫瓦。通过实验验证，该系统在多参数监测和运行功耗方面具有优异性能，并且能够实现能量自供应。
