摘要
随着物联网的发展,多节点的传感器供电成为关键问题,由于环境中普遍存在低频振动,采用了压电悬臂梁结构,建立压电悬臂梁结构的电学模型,并进行了ANSYS的仿真,仿真得到电压76 V,约等于模型的理论值,验证了模型的正确性。进而继续研究了压电悬臂梁几何尺寸对固有频率的影响,振子越长,质量块越长,频率越低。从而收集低频振动环境中的能量,为传感器供电装置提供了设计的理论依据。
With the development of Internet of thing（IoT）,multi-node sensor power supply has become a critical problem,since low frequency vibration exists generally in environment,use piezoelectric cantilever beam structure and establish electrical model of piezoelectric cantilever beam structure.ANSYS simulation is carried out and obtain voltage of 76 V,which is approximately equal to the theoretical value of the model,which verifies the correctness of model.Then continue to study the relationship between influence of geometry size of piezoelectric cantilever beam on natural frequency.The longer the oscillator and mass are,the lower the frequency are.Collect low-frequency vibration environment energy from environment and provide theoretical basis for design of sensor supply device.
出处
《传感器与微系统》
CSCD
北大核心
2014年第4期44-47,共4页
Transducer and Microsystem Technologies
