Qi Youchao, Zhao Junqing, Zeng Jianhua, Cao Xiaoxin, Qin Yuhan, Cao Jie, Gong Likun, Huang Xinlong, Wang Zhaozheng, Liu Guoxu, Zhang Chi
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China.
School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.
ACS Appl Mater Interfaces. 2023 Aug 30;15(34):40569-40578. doi: 10.1021/acsami.3c08016. Epub 2023 Aug 17.
Developing self-powered smart wireless sensor networks by harvesting industrial environmental weak vibration energy remains a challenge and an impending need for enabling the widespread rollout of the industrial internet of things (IIoT). This work reports a self-powered wireless temperature and vibration monitoring system (WTVMS) based on a vibrational triboelectric nanogenerator (V-TENG) and a piezoelectric nanogenerator (PENG) for weak vibration energy collection and information sensing. Therein, the V-TENG can scavenge weak vibration energy down to 80 μm to power the system through a power management module, while the PENG is able to supply the frequency signal to the system by a comparison circuit. In an industrial vibration environment where the vibration frequency and amplitude are 20 Hz and 100 μm, respectively, the WTVMS can upload temperature and frequency information on the equipment to the cloud in combination with the narrowband IoT technology to realize real-time information monitoring. Furthermore, the WTVMS can work continuously for more than 2 months, during which the V-TENG can operate up to 100 million cycles, achieving ultrahigh stability and durability. By integrating weak vibration energy harvesting and active sensing technology, the WTVMS can be used for real-time online monitoring and early fault diagnosis of vibration equipment, which has great application prospects in industrial production, machinery manufacturing, traffic transportation, and intelligent IIoT.
通过收集工业环境中的微弱振动能量来开发自供电智能无线传感器网络，仍然是一项挑战，也是推动工业物联网（IIoT）广泛应用的迫切需求。这项工作报道了一种基于振动摩擦纳米发电机（V-TENG）和压电纳米发电机（PENG）的自供电无线温度和振动监测系统（WTVMS），用于收集微弱振动能量并进行信息传感。其中，V-TENG能够收集低至80μm的微弱振动能量，通过电源管理模块为系统供电，而PENG能够通过比较电路为系统提供频率信号。在振动频率和振幅分别为20Hz和100μm的工业振动环境中，WTVMS能够结合窄带物联网技术将设备上的温度和频率信息上传至云端，以实现实时信息监测。此外，WTVMS能够连续工作超过2个月，在此期间V-TENG能够运行多达1亿次循环，实现超高的稳定性和耐用性。通过集成微弱振动能量收集和主动传感技术，WTVMS可用于振动设备的实时在线监测和早期故障诊断，在工业生产、机械制造、交通运输和智能工业物联网领域具有广阔的应用前景。
