Aiming at problems in greenhouse monitoring system

such as difficult wiring

inefficient monitoring and inflexible arrangement

design a low power consumption environment monitoring system based on wireless sensor networks（ WSNs）. This system constructs sensor node using CC2530 as core

builds tree-like WSNs with Zig Bee technology to cover all the greenhouses fields

then coordinates a local PC server to build scene auto-monitoring system to monitor environment change continuously in 24 h. In sensor node

low power consumption optimal design of software and hardware are carried out to reduce building and maintenance cost

and time synchrony management and power management are added

increase system reliability. Preliminary experiment shows that

accurate acquisition of data can be realized with lower power consumption（ 96 % energy reduction ratio）

and meet requirement of science research and fine production.