Study On Low Latency And High Efficient Wireless Sensor Network In The Greenhouse

Greenhouse culture is more and more widely used in agriculture production.It can be changed by environment to obtain the best growth condition in order to improve the production,quality,economic benefit and regulate the growth cycle.This paper studies on low latency and high efficient wireless sensor network in greenhouse based on the present wireless sensor network which is wired regulation,heavy workload,poor reliability and backward management,the study is important for improving the production management technology and increasing the economic benefit of greenhouse.At first,this paper analyses the influence of network structure to latency,energy consumption and cost of the information translation,uses AHP to optimize the level of the network.Secondly,this paper adopts Multi-objective optimization to optimize the duster scale based on the influence of duster scale to information transmission performance,and ACPM protocol for middle scale is used to select the cluster head node,and deploy the node in each level reasonably.Then this paper designs the general temperature,humidity nodes and duster head nodes by wireless communication module CC2430 based on Zigbee and GPRS module based on GSM respectively;At last,this paper implements the physical system,which contains the hardware of the network system,software simulation and operation of the system.The operation result of Three-level wireless senor network system in greenhouse indicates that:the management computer can obtain environment information of the monitored greenhouse remotely,the data transmission time of the sensor is about 0.043ms,and the node data can operate 22 dates under the condition that collecting sensors information after every 5 minters timed dormancy,and the lifetime of the network prolongs about 70%which compared with Bluetooth.The system has lower latency,lower energy consumption and faster response compared with general wireless sensor network,and realizes high efficient and wireless transmission between wireless sensor nodes and remote management computer.