This paper describes the investigation of a novel low-cost silicone-based hybrid vibration energy harvester (SHVEH) for converting machine vibrations into useful electrical power for wireless sensor nodes. Due to a novel fabrication technique, the harvester has the benefit of incorporating two transduction mechanisms (electromagnetic and piezoelectric) into a single silicone housing for improved output power. In the devised fabrication technique, water-soluble tablets are used to develop a cavity inside the silicone structure for an embedded magnet to vibrate in. The developed device was characterized inside the lab at different acceleration levels. The SHVEH was found to be capable of delivering a combined output power of 1.12 mW and a power density of 52 W cm⁻³. The SHVEH was able to deliver maximum open circuit voltages of 3 V and 28 mV AC via the piezoelectric and electromagnetic portions, respectively, at a resonant frequency of 110 Hz. Furthermore, after connecting the SHVEH to rectifier circuitry, the DC voltage levels obtained were 3.5 V and 35 mV from the piezoelectric and electromagnetic portions, respectively.

本文描述了一种新型低成本硅基混合振动能量收集器 (SHVEH) 的研究，用于将机器振动转换为无线传感器节点的有用电能。由于采用了一种新颖的制造技术，该采集器的优势在于将两种转换机制（电磁和压电）整合到单个硅胶外壳中，以提高输出功率。在设计的制造技术中，水溶性片剂用于在硅胶结构内部形成一个空腔，以便嵌入磁铁在其中振动。开发的设备在实验室内以不同的加速度水平进行了表征。发现 SHVEH 能够提供 1.12 mW 的组合输出功率和 52 的功率密度W cm ^-3。SHVEH 能够以 110 Hz 的谐振频率分别通过压电和电磁部分提供 3 V 和 28 mV AC 的最大开路电压。此外，将 SHVEH 连接到整流器电路后，从压电部分和电磁部分获得的直流电压电平分别为 3.5 V 和 35 mV。