基于压电能量收集技术的无线传感器节点设计

Design of Wireless Sensor Node Based on Piezoelectric Energy Harvesting Technology

针对传统无线传感器模块在复杂环境中电池适应性差、维护困难的弊端,设计了基于压电能量收集自供电技术,并具有超低功耗特性的无线传感器网络节点模块;方案采用PZ★T陶瓷实现压电换能,围绕LTC3588-1进行电源管理,提出了以CC430作为控制核心的应用端低能耗工作模式算法,实现完整的系统构建;实验表明,压电能量收集器可以支持具备低功耗特性的无线传感器模块正常工作。

Aiming at the defect of battery poor adaptability and difficult maintenance of traditional wireless sensor module applied in com- plex environment, ultra--low power consuming wireless sensor network module is designed based on piezoelectric energy harvesting self-- powered technology. PZT is used to work as the piezoelectric transducer, power management is mainly supported by the LTC3588--1, and a low--power operating mode algorithm for the application module with CC430 as the controlling core is proposed in the design, realizing complete system building. Experiments show that, piezoelectric energy harvester is able to support wireless sensor modules working with low power consuming characteristics.