| Methods of Measuring Apparpent Electrical Conductivity of Soil and Designing A Soil Salinity Measurement System Using Electromagnetic Induction Technique: An Overview |
| Paper ID : 1445-NICAME1402 |
| Authors: |
|
Arash Valipour *1, اسماعیل خراسانی فردوانی2 1Department of Biosystem Mechanics Engineering, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran 22. استادیار گروه مکانیک بیوسیستم، دانشگاه شهید چمران اهواز |
| Abstract: |
| In order to protect the environment and promote sustainable agriculture, it is very important to develop a non-destructive, non-invasive device to measure soil properties at low cost and with high speed and accuracy. Geophysical methods in agriculture are being developed to meet this need. In this research study, the electromagnetic induction method was investigated as one of the geophysical, non-destructive and close measurement methods to obtain soil physical characteristics such as salinity and moisture. This study included the design of a test sample of an electrical conductivity measurement system. An oscillator circuit was used to generate a sinusoidal signal as the transmitter coil signal, with a frequency of 12 to 15 kHz. The system was evaluated using simulator software. A signal amplifier circuit was also incorporated into the design, and data-logging hardware was developed to receive, convert, and send the values to a computer for further processing. To eliminate the effect of the primary field from the received signal on the receiver coil, a compensation mechanism consisting of a sample coil near the primary coil was considered. Also, a temperature sensor was used to improve the sample data in the system. |
| Keywords: |
| salinity stress, precision agriculture, proximal soil sensing, terrain apparent electrical conductivity, electromagnetic induction, sinusoidal oscillator circuit |
| Status : Paper Accepted (Poster Presentation) |
