To improve the efficiency of water usage

a low power consumption soil moisture control apparatus is designed.The system uses high precision soil moisture sensor based on frequency domain reflectometry technology to measure soil humidity

absolute error is ±2 %RH.It is controlled by MSP430 MCU to drive irrigation execution unit

and keep soil humidity within reasonable range.Design data storage module in system and configure USB interface in order to extract system records with USB flash disk at any time

which make it convenient to save and process data.Software design increases system standby mode for low power consumption demand.This system is convenient to operate and works stably and reliably that can meet the need of production practice.