Development of automatic control system of fertigation technique

To accurately control and simultaneously conduct of irrigation and fertilization in drip irrigation system, a highly intelligent fertigation system is developed based on single chip microcomputer (SCM) control principles and variable frequency technique. Via the optimal combination of hardware and software, the equipment is fabricated, where the electric conductivity and pH value can be accurately controlled and real-time regulated to meet the various needs of different crops. Utilizing SCM technique reduces the costs of the system, while the structure becomes much compacted due to the modular design to efficiently promote.