电子学报2026，Vol.54Issue(3)：1337-1347,11.DOI:10.12263/DZXB.20250178
用于长期环境监测的植物耦合能量收集系统
Plant-Coupled Energy Harvesting System for Long-Term Environment Monitoring
摘要
Abstract
Long-term environmental monitoring devices serve as critical nodes in the Internet of Things and play an essential role in smart city systems.However,providing sustainable long-term power supply for these devices remains a sig-nificant challenge.In this study,we propose a plant-coupled energy harvesting system(PCEHS)based on green plant leaves.This system harvests energy from the surrounding environment to support long-term environmental monitoring de-vices.The extensive biological interface of plant leaves provides an ideal medium for coupling electromagnetic energy from the environment.The cuticle and cell layers of leaves can be equivalent to a capacitor-resistor structure under power fre-quency electric fields.This structure effectively converges ambient electromagnetic radiation.Experimental results demon-strate that multiple plant species,including Clusia rosea,Schefflera actinophylla,and Plumeria rubra,generate effective electrical output under 50 Hz power frequency electric fields.The system maintains stable energy supply even when leaves suffer physical damage such as longitudinal tearing or horizontal tearing.This verifies the strong robustness of the system.Among the tested species,Schefflera actinophylla exhibits optimal energy harvesting performance due to its broad,flat leaves and well-developed vein networks.Therefore,this species is selected as the research subject for subsequent experi-ments.The system adopts an event-driven intermittent operation architecture with dual-stage heterogeneous energy storage.A small-capacitance capacitor rapidly accumulates energy and periodically wakes up the power management chip.This de-sign achieves extremely low static power consumption.We successfully deploy the PCEHS in an actual office environment.Using potted plant leaves as the energy coupling medium,the system utilizes the ambient electric field generated by a laptop adaptor.It achieves continuous temperature and humidity monitoring for several days.Data are uploaded to mobile termi-nals via wireless networks every five minutes.Experimental data show that the system consumes only 0.27 mJ per signal transmission.The total energy consumption over a five-minute monitoring cycle is approximately 2.455 mJ.These results fully verify the stable operation capability of PCEHS under ultra-low power conditions.The system meets long-term moni-toring requirements and adapts to various energy-sensitive scenarios.With its stability,sustainability,and environmental friendliness,PCEHS requires no contact with power lines.It does not depend on light exposure or mechanical motion.The system demonstrates broad application prospects in typical low-frequency electromagnetic field scenarios such as green buildings and smart offices.This technology is expected to play a key role in enhancing the intelligence and efficiency of ur-ban management.It provides strong support for the sustainable development of smart cities.关键词
植物耦合能量收集/环境电磁能量/可持续系统/自供电系统/智慧城市/物联网Key words
plant-coupled energy harvesting/ambient electromagnetic energy/sustainable system/self-powered sys-tem/smart city/IoT分类
信息技术与安全科学引用本文复制引用
单嘉泽,赵达哲,钟俊文..用于长期环境监测的植物耦合能量收集系统[J].电子学报,2026,54(3):1337-1347,11.基金项目
国家自然科学基金(No.52522513) （No.52522513）
澳门科学技术发展基金(No.0117/2024/AMJ) National Natural Science Foundation of China(No.52522513) （No.0117/2024/AMJ）
Science and Technology Devel-opment Fund,Macao SAR(No.0117/2024/AMJ) （No.0117/2024/AMJ）
