Experimental Validation of DTMF Decoder Electronic Circuit to be Used for Remote Controlling of an Agricultural Pump System

This work investigates the implementation and experimental analysis of practical DTMF decoder electronic circuit that can be used for remote controlling of agricultural pump system or other applications. A DTMF tone command sent from a transmitting fixed or mobile phone station will be decoded by the electronic circuit at the receiving phone station and accordingly the command signal will be interpreted and then be used to SWITCH ON/OFF selected or several motors that are used to pump water for agricultural fields. The paper presents the experimental work and analysis results of the different stages of the design confirming our previous simulation work using the NI-Multism program. The results of the simulation and the experimental work show that the electronic design is capable of controlling the switching state of the pumping motors.