A data collection method for wireless sensor networks based on tunnel environment

Abstract

A tunnel environment-based wireless sensor network data collection method disclosed by the present invention includes the following steps: Step 1: sensor nodes are arranged in the tunnel environment for collecting tunnel environment data, and mobile cars are used to collect data. Use the discretization method to divide the moving cycle of the car into several time slots, and obtain a set of continuous time slots in which each sensor node can communicate with the car; Step 2: For each time slot, calculate the time slot that can communicate with the car in this time slot The throughput of all sensor nodes; Step 3: For each time slot, allocate the time slot to the sensor node with the largest utility gain, and obtain the time slot allocation scheme that maximizes the total utility of the network. The invention applies the backscattering communication technology to the wireless sensor network based on the tunnel environment, which can reduce energy consumption, maximize the total utility of the network, improve the data collection quality of the sensor network, and realize the fairness of the data collection ratio of each node.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a tunnel environment-based wireless sensor network data collection method. Background technique [0002] In the currently deployed wireless sensor networks, the data sensed by sensor nodes is gathered to the data sink node in a multi-hop or single-hop manner through wireless communication. In the tunnel-based wireless sensor network, the sensor nodes are deployed in the tunnel to perceive the tunnel environment data. Furthermore, the built-in radio frequency module of the sensor generates radio frequency signals to wirelessly forward the sensed data. The radio frequency transmission consumes a lot of battery energy. In some specific tunnel scenarios, such as mines and underground oil pipelines. Moreover, in a wireless sensor network, the greater the node communication distance, the greater the power required for the node to transmit signals. After the node is deployed, th...

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Problems solved by technology

[0004] In order to overcome the problem that nodes in wireless sensor networks consume a large amount of battery energy due to multi-hop or single-hop wireless forwarding data, and consider the fairness of sensor nodes, a method for collecting data in wireless sensor networks based on tunnel environment is provided. Data, the sensor nodes forward the data to the mobile car in the form of backscatter communication, this collection method can reduce energy consumption, and can improve the quality of sensor network data collection, and achieve a fair data collection ratio for each node

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