Mobile access terminal used in wireless sensor network and system thereof

Abstract

The invention discloses a mobile access terminal used in a wireless sensor network and a system thereof. The terminal comprise a control module, a sensing network first frequency communication module and a sensing network second frequency communication module, wherein the control module emits a receiving data command to the sensing network first frequency communication module and / or the sensing network second frequency communication module according to a work frequency of a wireless sensing network; The sensing network first frequency communication module monitors and receives data emitted by wireless sensor nodes of the wireless sensing network as a 2.4 GHz frequency range according to the receiving data command of the control module; the sensing network second frequency communication module monitors and receives the data emitted by the wireless sensor nodes of the wireless sensing network as a 433MHz frequency range according to the receiving data command of the control module. By using the terminal and the system of the invention, the terminal can monitor the data under the different frequencies and can automatically select an optimal mode to access the network according to changes of environment so that integrity of the data can be guaranteed.

Description

technical field [0001] The present invention relates to wireless communication and information dissemination technology, in particular to a mobile access terminal and system used for wireless sensor network (hereinafter referred to as wireless sensor network) for wireless sensor network data access. Background technique [0002] Existing mobile access terminals provide network access functions, which mainly realize the most basic data forwarding functions, including receiving data from wireless sensor networks and forwarding them to remote data centers on the Internet (such as remote servers or remote monitoring platforms, etc.), In order to realize the data monitoring of the wireless sensor network. [0003] The existing mobile access terminals have the following problems: [0004] (1) The working frequency of monitoring data is single and the versatility is poor [0005] Usually the working frequency of wireless sensor network mainly consists of two kinds of 2.4GHz and 4...

AI Technical Summary

Problems solved by technology

[0007] (2) A single Internet access method is difficult to guarantee data integrity

In this way, when the environment changes, the access method cannot be updated in time, which will cause the loss of node data

[0009] (3) A single data forwarding function cannot adapt to the development of modern networks

[0010] Existing mobile access terminals can only forward the received data directly without any other preprocessing

When there are many sensor nodes in the wireless transmission network, it will cause great pressure on the remote server, which will seriously reduce the real-time performance of the data; moreover, in most time ranges, the monitoring data of the sensor nodes will not change significantly. Faster changes often mean that there will be data alarms or hardware exceptions

Therefore, the data forwarding method that cannot be preprocessed by traditional mobile access terminals often forwards a large amount of useless redundant data

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