Network transfer node of wireless sensor network and equal delay and throughput hoisting methods

Abstract

The invention discloses a network transfer node of a wireless sensor network and equal delay and throughput hoisting methods. The node comprises a data channel radio-frequency module, a transfer channel radio-frequency module, a synchronization channel radio-frequency module and a programmable logic device module. The equal delay method is characterized in that the synchronization channel radio-frequency module of the network transfer node is to periodically receive the synchronous messages sent to a synchronization channel by a management node and sends the synchronous messages to the programmable logic device module; and the programmable logic device module switches the synchronization channel radio-frequency module to a data channel and then sends the synchronous messages to the synchronization channel radio-frequency module, and the synchronization channel radio-frequency module sends the synchronous messages to the data channel, thus realizing equal delay and transfer of the synchronous messages. The throughput hoisting method is characterized in that after the network transfer node receives the data packets in the data channel, the data packets are immediately sent to a transfer channel via the transfer channel radio-frequency module, thus realizing transfer of the data packets.

Description

technical field [0001] The invention relates to a wireless sensor network node and method, in particular to a network transfer node with equal delay transfer of command packets and synchronization messages and fast transfer of data packets for wireless sensor network applications with large distances and large data volumes and methods. Background technique [0002] Intelligent wireless sensor network is an emerging technology gradually developed in the past ten years. It integrates sensor technology, embedded computer technology, communication technology, power supply technology and other technologies, so that people can get more detailed information at any time, place and environment. , Reliable information, can be widely used in fields such as national security, military field, medical health, traffic management, environmental monitoring, space exploration, business and so on. [0003] Intelligent wireless sensor network technology provides a good intelligent distributed ...

AI Technical Summary

Problems solved by technology

[0007] The above system has disadvantages: the monitoring network adds multi-hop nodes to forward data packets in the same channel to extend the monitoring distance of the network. Since multi-hop nodes will occupy bandwidth when forwarding data, the collection node must send data to Multi-hop nodes, multi-hop nodes must also ensure that the data is forwarded to the base station node within the time slot. If you want to expand the time slot, you can only reduce the number of acquisition channels in each star network, or reduce the sampling frequency; at the same time, The multi-hop nodes using the traditional microprocessor and radio frequency chip architecture cannot make the forwarding delays of command packets and synchronization messages equal in the network, which is not conducive to the realization of network time synchronization. It is necessary to develop a network transit node that expands the monitoring distance. At the same time, the number of acquisition channels and sampling frequency of a single data channel are not reduced, and it can provide support for equal-delay transfer of command packets and synchronization messages

[0008] At present, there are no relevant patents at home and abroad on network transfer nodes for wireless sensor networks with large data volumes

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