According to the characteristics of groundwater monitoring system,such as the field work unattended, replace the battery problem,the sampling time is short and standby time is long,the method is used to extend the power of life that using the watchcircuit control system under different power state automatic switching.Considering the characteristics of the system that parameter configuration commands are complex,field sampling is diverse and the communication time is not stable,thepaper puts forward the measuresthatmulti trigger source of hardware and status word of software collaborative work together to realize the system logic control.The overall power consumption of groundwater monitoring system which introduceswatch circuit is greatly reduced. Experimental results verify the feasibility of the watch circuit and show that the watch mode will become the development direction of field monitoring industry.

The networked and smart interface standards have very important role for underground water monitoring system integration, dynamic information real time acquisition and sharing. Firstly this paper introduces several interface standards as IEEE 1451, and field of environmental monitoring in the popular serial data communication interface standard SDI-12 in the Europe and the United States, then summarize their architectures, main contents and application situation,and then analyze their advantages and questions existing in the standards respective. Introduction groundwater level, water temperature automatic monitoring and remote management system implementation method based on the SDI-12 standard form. Finally puts forward interface standards which could be applied to the underground water monitoring system.