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<p>In aerospace systems, wireless sensor networks (WSNs) are widely used for structural health monitoring and environmental data collection. Self-powered sensing technology effectively reduces wiring requirements, enabling distributed, adaptive, and long-term monitoring. However, the randomness and instability of ambient energy harvesting pose significant challenges for efficient energy extraction, conversion, and storage. This study proposes a six-channel array piezoelectric vibration energy harvester (SA-PVEH) suitable for medium-to-high frequency scenarios, capable of delivering high output power over a broad frequency range. By integrating a parallel synchronized switch harvesting on an inductor (P-SSHI) interface circuit with split inductors and capacitors, along with a threshold-triggered intermittent energy scheduling method, efficient energy conversion and transfer are achieved. Under external excitation with a frequency of 640 Hz and an acceleration of 1 g, the system achieves a maximum output power of 1.17 mW with a power management circuit (PMC) efficiency of 84.7%. Finally, the self-powered aerospace sensing system (SP-ASS) was employed for application in pressure monitoring on the fixed-wing aircraft Aurora SA60L.</p>

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Array-type piezoelectric energy harvesting power management method for a self-powered aerospace sensing system

  • 期刊论文

  • 发表日期：

    2025年8月13日

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  • Chenxi Zhao,
  • Pengfan Wu,
  • Yu Fan,
  • Endian Cui,
  • Fayang Wang,
  • Xiaojing Mu

摘要

In aerospace systems, wireless sensor networks (WSNs) are widely used for structural health monitoring and environmental data collection. Self-powered sensing technology effectively reduces wiring requirements, enabling distributed, adaptive, and long-term monitoring. However, the randomness and instability of ambient energy harvesting pose significant challenges for efficient energy extraction, conversion, and storage. This study proposes a six-channel array piezoelectric vibration energy harvester (SA-PVEH) suitable for medium-to-high frequency scenarios, capable of delivering high output power over a broad frequency range. By integrating a parallel synchronized switch harvesting on an inductor (P-SSHI) interface circuit with split inductors and capacitors, along with a threshold-triggered intermittent energy scheduling method, efficient energy conversion and transfer are achieved. Under external excitation with a frequency of 640 Hz and an acceleration of 1 g, the system achieves a maximum output power of 1.17 mW with a power management circuit (PMC) efficiency of 84.7%. Finally, the self-powered aerospace sensing system (SP-ASS) was employed for application in pressure monitoring on the fixed-wing aircraft Aurora SA60L.