三种植物叶片电信号的特征分析  

Analysis of Characteristics of Electrical Signals in the Leaves of Three Species of Plants

作　　者：孟晓丽[1] 习岗[1] 张晓辉[2] 刘锴[1] 

机构地区：[1]西安理工大学理学院,陕西西安710048 [2]西安理工大学自动化与信息工程学院,陕西西安710048

出　　处：《西安理工大学学报》2011年第2期209-213,共5页Journal of Xi'an University of Technology

基　　金：国家自然科学基金资助项目(50977079);陕西省教育厅专项科研计划基金资助项目(09JK667)

摘　　要：采集玉米(Zea mays L)、芦荟(Aloe vera L)和吊兰(Chlorophytum comosum)三种植物叶片的表面电信号,通过小波变换对采集到的电信号进行降噪和重构,对降噪后的电信号进行功率谱分析。结果表明,玉米、芦荟和吊兰三种植物叶片电信号是幅值为μV级、频率分布在2 Hz以下的低频电信号。玉米叶片电信号的频率分布主要集中在0～0.4 Hz,芦荟叶片电信号频率分布主要集中在0～0.6 Hz,吊兰叶片电信号的频率分布主要集中在0～0.8 Hz。The electrical signals in the leaves of three species of plants including maize（Zea mays L）,aloe（Aloe vera L） and broadleaf bracket-plant（Chlorophytum comosum） are collected,de-noised and reconstructed by wavelet transform in this paper.The power spectrum of these de-noised electrical signals was analyzed and the statistic parameters for these signals are obtained.The results show that the electrical signals in the leaves of three species of plants are the low-frequency signals whose amplitude is the μV level and distribution of frequency is in 0~2 Hz range.The frequency of signals in maize mainly concentrate in 0~0.4 Hz,aloe mainly in 0~0.6 Hz,and broadleaf bracket-plant in 0~0.8 Hz.

关 键 词：植物 电信号 小波 功率谱 

分 类 号：Q64[生物学—生物物理学]