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https://hdl.handle.net/10316/40487
Title: | Developing an Acquisition System to Sutdy Plant Electrophysiology | Authors: | Cabrita, Ricardo de Abreu Silvério | Orientador: | Marques, Lino José Forte | Keywords: | Electrofisiologia das Plantas; Potenciais Eléctricos; Biosensores; Aquisição de Dados; Condicionamento de Sinal; Plant Electrophysiology; Electrical Potentials; Biosensors; Data Acquisition; Signal Conditioning; Compressive Sensing; Wavelets | Issue Date: | 25-Feb-2016 | Place of publication or event: | Coimbra | Abstract: | Plants are constantly tapped to the environment in order to maintain homeostasis, synchronising internal functions to external phenomena. There is great interest in advancing in the field of plant electrophysiology so as to employ plants as biosensors in the future. A custom-made acquisition system to study plant electrophysiology was developed, including a three channel signal conditioning circuit and ADC with dynamic sampling rate. Also, air temperature and humidity, soil temperature and humidity and irradiance are monitored. To test the system an experiment was conduced to study lettuce, Batavia Amari Paris, response to acid. For this two groups of 4 lettuce each, one used as control the other subject to fertilising treatment, were studied in the absence of stimuli and in response to acid deposition. Feature selection was made using discrete wavelet analysis. The fertilised lettuce showed little response to acid, but fairly strong correlations between signals in the leaf zone. Control group showed high incidence of high frequency fast transients in response to acid, especially in the root zone. Both groups showed higher variance of DC values during day time than night time. | Description: | Dissertação de Mestrado Integrado em Engenharia Electrotécnica e de Computadores apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra | URI: | https://hdl.handle.net/10316/40487 | Rights: | openAccess |
Appears in Collections: | UC - Dissertações de Mestrado FCTUC Eng.Electrotécnica - Teses de Mestrado |
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File | Description | Size | Format | |
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Developing an Acquisition System to Sutdy Plant Electrophysiology.pdf | 14.67 MB | Adobe PDF | View/Open |
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