Method for adjusting regular sleep period of terminal node in self-adaptive manner

Abstract

The invention relates to a method for adjusting the regular sleep period of a terminal node in a self-adaptive manner. The method disclosed by the invention comprises the following steps of: acquiring the linear relation between time t and data volume D of data acquired by the current terminal node, then calculating a predicted value of the data volume D'n through the time tn of the data acquired by the current terminal node, and further configuring the regular sleep period time Tn of the terminal node in the self-adaptive manner according to the deviation range between the predicted value of the data volume D'n and the data volume Dn of the data which is actually acquired by the current terminal node. The method disclosed by the invention is used for the terminal node of a wireless sensor network; when the data of the terminal node changes little or shows linear change within a period of time, the longer sleep time can be acquired, and the number of times of sending the data can be reduced; and the sleep time can be reduced under the situation that the change of the node is accelerated and does not show the law, so that an accurate data value can be acquired, namely that the data transmitted by a monitoring region can be accurately acquired, the energy consumption of the terminal node can be also significantly reduced, and the life time can be prolonged.

Description

technical field [0001] The present invention relates to a wireless sensor network (WSN) and the Internet of Things technology, in particular to a method for adaptively adjusting a timing sleep cycle of a sensor network terminal node. Background technique [0002] With the development of sensor technology, wireless communication technology, network technology and micro-electromechanical system and other related technologies, a wireless sensor network (WSN) composed of low-cost, low-power, small-volume, and multi-functional sensor terminal nodes has emerged. It is composed of a large number of cheap micro-sensor terminal nodes deployed in the monitoring area, and forms a multi-hop self-organizing network system through wireless communication. Its purpose is to perceive, collect and process the information of the monitored objects in the network coverage area. , and sent to the observer or backend server. [0003] Different from traditional fixed networks, wireless sensor netw...

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Problems solved by technology

[0004] At present, terminal nodes generally use fixed time to collect monitoring area data, because generally many sensor data are continuously changing, and the data change is very slow or the data shows a linear change within a period of time, the fixed time data collection and transmission affect The node sleeps, so that the node data sends, monitors, and receives the same data, so that the node consumes a lot of energy; and when the size of the data collected by the terminal node changes little or shows a linear change for a period of time, the terminal node still uses a fixed Timing time sleep will lead to waste of energy consumption of nodes, and there is a technical problem that the data cannot be collected in time for the situation where the data changes greatly

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