Detection area division method of wireless sensor network in farmland gradient environment

Abstract

The invention provides a farmland gradient environment wireless sensor network monitoring region division method. According to the method, a gradient environment signal attenuation model is provided, according to different crop growth environments, the model predicates the signal transmission loss in a way of considering factors of the plant density, the crop height and the like, in addition, a path loss relationship value is given out, and the energy consumption in the signal transmission process is reduced through setting the reasonable antenna height; after the gradient farmland environment signal attenuation model is utilized for reasonably ranging network nodes, the residual energy of the nodes is determined according to the path loss value given by the model, the node residual energy and sensing range relationship is obtained from the network energy sensing angle, a network monitoring region is dynamically regulated according to the effective sensing range of the nodes under the current condition, and the early death phenomenon of the network nodes is reduced. The method provided by the invention has the advantages that various influence factors of the farmland environment on the signal monitoring rate are fully considered, the monitoring effect is improved, the network energy expenditure is less, and the network survival time is prolonged.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to modeling the attenuation of wireless sensor signals in a variable farmland environment, and on this basis, further dividing the network detection areas of wireless sensors in a variable farmland environment. Background technique [0002] The high-energy-efficiency and low-latency flood propagation of large-scale farmland detection wireless sensor networks is affected by factors such as crop growth height, density, farmland environment, habitat nutrients, and growth cycles. Wireless sensor network node failures, energy consumption holes, and network connectivity Sexuality and coverage have been severely impacted. Due to the failure of the node to cause the path to be disconnected or even the entire network to be paralyzed, especially the rapid energy consumption of the frequently used nodes, it is easy to cause the network to be in a deadlock state. In ...

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