Home           Contact us           FAQs           
 
   Journal Page   |   Aims & Scope   |   Author Guideline   |   Editorial Board   |   Search
    Abstract
2013 (Vol. 6, Issue: 24)
Article Information:

Influence of Electrical Double Layer in the Electrical Model for Capacitance-based Soil Moisture Sensor on Measuring Soil Moisture

Yan Xu, Wei-Dong Yi, Ko-Wen Jwo and Zheng-Yi Hu
Corresponding Author:  Yan Xu 

Key words:  Capacitance-based sensor, electrochemical, equivalent electrical model, soil moisture sensing, , ,
Vol. 6 , (24): 4630-4636
Submitted Accepted Published
February 23, 2013 April 22, 2013 December 25, 2013
Abstract:

The reasonable electrical model for Capacitance-Based Soil Moisture Sensor (CBSMS), namely relationship between soil moisture and sensor output voltage, is the basic requirement of soil moisture measurements. In the present study, two CBSMS (PA-1 for the self-developed CBSMS and EC-5 for decagon company’s CBSMS) were employed to assess influence of electrical double layer in the electrical model for CBSMS on measuring soil moisture based on 15 soil samples with moisture ranging from 2.6~30%. Results showed that significant deviations of experimental results and estimated values were determined mainly in dependence on the electrical models (Model-1: with electrical double layer, Model-2: without electrical double layer), soil moisture range and sensor itself. Significant deviations were observed in the moisture range of 2.6~6%, 22~30% for EC-5 and of 2.6~10%, 22~30% for PA-1 with Model-2, whereas the deviations did not exist for both CBSMS in the moisture range of 2.6~10% with Model-1. For both CBSMS, in the moisture range of 22~30%, the deviation between estimated values from Model-1 with experimental results was obviously less than that from Model-2. These results suggest that the electrical double layer should be considered in the electrical model for CBSMS, especially for measuring low soil moisture.
Abstract PDF HTML
  Cite this Reference:
Yan Xu, Wei-Dong Yi, Ko-Wen Jwo and Zheng-Yi Hu, 2013. Influence of Electrical Double Layer in the Electrical Model for Capacitance-based Soil Moisture Sensor on Measuring Soil Moisture.  Research Journal of Applied Sciences, Engineering and Technology, 6(24): 4630-4636.
    Advertise with us
 
ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
Submit Manuscript
   Current Information
   Sales & Services
   Contact Information
  Executive Managing Editor
  Email: admin@maxwellsci.com
  Publishing Editor
  Email: support@maxwellsci.com
  Account Manager
  Email: faisalm@maxwellsci.com
  Journal Editor
  Email: admin@maxwellsci.com
  Press Department
  Email: press@maxwellsci.com
Home  |  Contact us  |  About us  |  Privacy Policy
Copyright © 2009. MAXWELL Science Publication, a division of MAXWELLl Scientific Organization. All rights reserved