Department of Mechanical Engineering, Kyungpook National University, Daegu 41566, Korea.
Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea.
Sensors (Basel). 2020 Aug 3;20(15):4328. doi: 10.3390/s20154328.
A variety of sensor systems have been developed to monitor the structural health status of buildings and infrastructures. However, most sensor systems for structural health monitoring (SHM) are difficult to use in extreme conditions, such as a fire situation, because of their vulnerability to high temperature and physical shocks, as well as time-consuming installation process. Here, we present a smart ball sensor (SBS) that can be immediately installed on surfaces of structures, stably measure vital SHM data in real time and wirelessly transmit the data in a high-temperature fire situation. The smart ball sensor mainly consists of sensor and data transmission module, heat insulator and adhesive module. With the integrated device configuration, the SBS can be strongly attached to the target surface with maximum adhesion force of 233.7-N and stably detect acceleration and temperature of the structure without damaging the key modules of the systems even at high temperatures of up to 500 °C while ensuring wireless transmission of the data. Field tests for a model pre-engineered building (PEB) structure demonstrate the validity of the smart ball sensor as an instantly deployable, high-temperature SHM system. This SBS can be used for SHM of a wider variety of structures and buildings beyond PEB structures.
已经开发出各种传感器系统来监测建筑物和基础设施的结构健康状况。然而，大多数用于结构健康监测 (SHM) 的传感器系统由于易受高温和物理冲击的影响，以及安装过程耗时，因此难以在极端条件下（如火灾情况）使用。在这里，我们提出了一种智能球传感器 (SBS)，它可以立即安装在结构表面上，实时稳定地测量重要的 SHM 数据，并在高温火灾情况下无线传输数据。智能球传感器主要由传感器和数据传输模块、隔热和粘合模块组成。通过集成的设备配置，SBS 可以与目标表面牢固地附着，最大附着力为 233.7-N，即使在高达 500°C 的高温下，也能稳定地检测结构的加速度和温度，而不会损坏系统的关键模块，同时确保数据的无线传输。对模型预制建筑 (PEB) 结构的现场测试证明了智能球传感器作为一种可即时部署的高温 SHM 系统的有效性。这种 SBS 可用于 PEB 结构以外的更广泛种类的结构和建筑物的 SHM。
