Data acquisition method for sensor network, gateway and data acquisition system

Abstract

The invention relates to a data acquisition method for a sensor network, a gateway and a data acquisition system. The sensor network comprises a plurality of sensor nodes. The data acquisition method comprises the steps of: respectively comparing a variable quantity of received data sent by each sensor node in a preset time period with a corresponding preset value; judging whether the data of which the variable quantities reach the corresponding preset values exists; and increasing acquisition frequencies of the sensor nodes corresponding to the data of which the variable quantities reach the corresponding preset values to a first acquisition frequency. According to the invention, the acquisition frequencies of different sensor nodes are controlled by utilizing the same gateway, the condition that the uploaded data is out of sync cannot be generated, and the data acquisition method, the gateway and the data acquisition system are beneficial to analysis processing of a background server on the data.

Description

technical field [0001] The invention relates to the field of wireless sensor network communication, in particular to a sensor network data acquisition method, gateway and data acquisition system. Background technique [0002] As an important part of the Internet of Things, the sensor network plays a role in obtaining information about the physical world and transmitting it to the background server. The basic process of information collection and transmission is: the sensor nodes in the sensor network collect information, and transmit the collected information to the aggregation node (or gateway) through the pre-built sensor network, and the gateway performs preliminary processing (such as data compression). After integration or protocol conversion), upload to the background server. [0003] In some scenarios, multiple sensor nodes in the collection area are divided into different types to collect different types of data respectively. After comparing and analyzing multiple t...

AI Technical Summary

Problems solved by technology

In this method, because different data collected are processed by different gateways, different gateways cannot cooperate with each other, and the function of the gateway is single. It only does data protocol conversion and uploading work, and there is no selectivity for data uploading. Due to the asynchronous frequency of data processing and uploading, etc., it is possible to process and upload the data in the monitoring area at different times. It is difficult for the background to compare and analyze different types of data, and there will be time delay errors, which will affect the processing decision.

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