Low Power Ph Sensor for - Wireless Sensor Network Node Agricultural Application
نویسندگان
چکیده
A Wireless Sensor Networks (WSN) is now widely used in precision agriculture applications. Sensors play an important role in WSN. The measurement of soil pH is arguably the most widely performed test in the chemical laboratory, the use of pH sensitive field-effect transistors (pHFETS) is proposed for remote monitoring of the nutrient solution composition for an agricultural farm soil. The proposed system was formed by a sensor system based on polymeric (PVC) membranes with cross selectivity with time triggered sampling of sensor and its signal conditioning. With the optimized model, th0e pH levels of soil were monitored and the time triggered approach for sampling sensor improved the performance and lifetime of WSN node .The approach appears as a feasible method for the on-line assessment of nutrients and undesired compounds in fertigation solutions.
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