Zhu Lijie, Guo Likang, Ding Zhi, Zhao Zhengqian, Liu Chaoran, Che Lufeng
College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China.
Center for Microelectronics, Shaoxing Institute, Zhejiang University, Shaoxing 312035, China.
Sensors (Basel). 2024 Mar 8;24(6):1761. doi: 10.3390/s24061761.
Real-time monitoring of rainwater is a critical issue in the development of autonomous vehicles and smart homes, while the corresponding sensors play a pivotal role in ensuring their sensitivity. Here, we study a self-powered intelligent water droplet monitoring sensor based on a solid-liquid triboelectric nanogenerator (SL-TENG). The sensor comprises a SL-TENG, a signal acquisition module, a central processing unit (CPU), and a wireless transmission module, facilitating the real-time monitoring of water droplet signals. It is worth noting that the SL-TENG has self-powering characteristics and can convert the kinetic energy of water droplets into electrical energy. The excellent output performance, with open-circuit voltage of 9 V and short-circuit current of 2 μA without any treatment of the SL-TENG, can provide an effective solution to the problem that traditional sensor need battery replacement. In addition, the SL-TENG can generate stable amplitude electrical signals through water droplets, exemplified by the absence of decay in a short-circuit current within 7 days. More importantly, the sensor is equipped with intelligent analytical capabilities, allowing it to assess rainfall based on variables such as amplitude and frequency. Due to its excellent stability and intelligent analysis, this sensor can be used for roof rainwater monitoring, intravenous administration monitoring, and especially in automobile automatic wipers and other fields.
雨水的实时监测是自动驾驶汽车和智能家居发展中的一个关键问题,而相应的传感器在确保其灵敏度方面起着关键作用。在此,我们研究了一种基于固液摩擦纳米发电机(SL-TENG)的自供电智能水滴监测传感器。该传感器包括一个SL-TENG、一个信号采集模块、一个中央处理器(CPU)和一个无线传输模块,便于对水滴信号进行实时监测。值得注意的是,SL-TENG具有自供电特性,能够将水滴的动能转化为电能。在未经任何处理的情况下,SL-TENG具有出色的输出性能,开路电压为9V,短路电流为2μA,可为传统传感器需要更换电池的问题提供有效的解决方案。此外,SL-TENG可以通过水滴产生稳定幅度的电信号,例如短路电流在7天内无衰减。更重要的是,该传感器具备智能分析能力,能够根据幅度和频率等变量评估降雨量。由于其出色的稳定性和智能分析能力,这种传感器可用于屋顶雨水监测、静脉输液监测,尤其适用于汽车自动雨刮器等领域。