Wireless sensor network node

Abstract

The invention relates to a wireless sensor network node, which refers to the node that can realize low power consumption, and is characterized in that the network time synchronization and calibration of all nodes and switching control on working modes between long-time dormancy and timing arousal are realized by a precise clock module. After a wireless sensor network is established, at first each node clock in the whole network is synchronized, on the basis, the precise clock module arouses the node in the long-time dormancy according to set time, responses a host computer instruction and finishes the work of data collection and transmission, then returns to the state of long-time dormancy again and waits to be aroused next time. The node of the invention is used for a wireless sensor network system, and has the advantages of remote control function, network node time synchronization, reduction on the frequent periodical arousal and dormancy of the node, saving a large amount of battery power, reducing greatly system power consumption, and the like, thus greatly increasing energy efficiency and effectively expanding the life cycle of the whole network.

Description

Technical field [0001] The invention relates to a node in a wireless sensor network, which can realize the synchronous collection of data in the wireless sensor network and the conversion of long-term sleep and timing wake-up working modes of the nodes in the network, greatly reducing the power consumption of the nodes, and is suitable for low-power consumption. wireless sensor network. Background technique [0002] As an emerging technology, Wireless Sensor Networks (WSN) is composed of a large number of cheap micro-nodes deployed in the detection area, forming a multi-hop self-organizing network through wireless communication, and cooperatively collecting and processing the detection area. The perceived object information is sent to the observer. Its emergence has produced a new mode of information acquisition and processing, combined with different types of sensors, it has broad application prospects in many fields such as environmental monitoring, military reconnaissanc...

AI Technical Summary

Problems solved by technology

The collection of data in the actual detection environment is generally not very frequent, and the current sensor nodes generally use the sleep timer inside the microprocessor to realize frequent wake-up in a short period of time to check whether there is a data collection requirement. The calibration of the clock is realized through the software algorithm of the relevant communication protocol, and there are relatively large defects in practical applications.

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