| In order to increase water supply management efficiency for small size mountain citrus orchard without electric power supply, a solar -powered low -power water supply automatic control device was developed. The device consisted of two parts: a master controller and a slave controller. The master controller was mainly used to control the diaphragm pump to pump water into the reservoir built in the mountain top. The slave controller was mainly used to detect water level of the reservoir built at the top of mountain, and then in turn to provide decision basis for water supply automatic control. Interaction of data and control signals between master controller and slave controller had been taken through a pair of wireless communication module CC1101. It was estimated according to the current measured that the electricity consumption of running one day of the master controller and the slave controller was respectively 8 576.3 mA.h,2.2 mA.h. The success rate of wireless communication was 100% and 95% of the wireless communication could be finished within six seconds, the maximum error of the reservoir's water level detection was 0.8 cm. |
