Tree growth telemetering method and system based on directional diffusion protocol

A technology of directed diffusion and trees, applied in the field of tree growth telemetry based on directed diffusion protocol, to achieve the effect of reducing the process of gradient establishment, improving survival time and reducing construction time

Active Publication Date: 2021-08-27
ZHEJIANG FORESTRY UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the shortcoming of existing tree growth telemetry, the present invention proposes a kind of directed diffusion protocol construction method for tree growth telemetry, comprising steps:

Method used

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  • Tree growth telemetering method and system based on directional diffusion protocol
  • Tree growth telemetering method and system based on directional diffusion protocol
  • Tree growth telemetering method and system based on directional diffusion protocol

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Embodiment 1

[0051] Telemetry is a method that relies on close-range sensors to collect data and transmit the data to distant collection stations, and it has been well used in tree growth measurement. Although telemetry technology has been widely used in forestry at this stage, the WSN developed in recent years has been applied to the measurement of tree growth due to its low cost, fast and convenient system layout, and interactive communication between nodes. . In the tree plot to be measured, a large number of sensor nodes will be arranged to form a wireless sensor network. When the host sends an instruction to the query node, the node can remotely return the corresponding data information to achieve fast and efficient measurement goals. The DD protocol is a query-based routing protocol that is data-centric. According to the characteristics of the DD protocol, the DD protocol can be applied to the tree growth telemetry WSN.

[0052] The establishment of the DD protocol includes three ...

Embodiment 2

[0075] In order to better understand the technical content of the present invention, this embodiment illustrates the present invention in the form of a system structure, such as figure 2 Shown, a directed diffusion protocol-based tree growth telemetry system, including:

[0076] The base station node is used to flood the interest information to the data node;

[0077] Intermediate nodes (several), used to obtain the distance from the base station node during the flooding propagation process, store the interest information and the number of forwarding times when the interest information is forwarded to the node under each propagation path to the node list;

[0078] The data node is used to obtain the node summary list after the flooding propagation, and send it to each intermediate node, and the node summary list includes the forwarding times and interest information of the interest information of each propagation path;

[0079] The path selection unit is used to obtain the p...

Embodiment 3

[0092] In order to better verify the reliability of the technical content of the present invention, the present invention is verified with a real experimental data. The MATLAB platform is used to simulate the protocol, and the performance of the DD protocol, the IDD protocol (the threshold is set on the basis of the DD protocol is adjusted according to "1 / 2"), and the performance of the DD-DHE protocol are compared under the same experimental conditions.

[0093] According to the application characteristics of WSN in tree growth telemetry, the following definitions are made in the simulation:

[0094] 1) The nodes in the network are evenly distributed, each node has a fixed ID, and stores its own location information in advance;

[0095] 2) The nodes in the network have the same structure and the same initial energy;

[0096] 3) Nodes in the network area can communicate with each other;

[0097] 4) The Sink node is located at the geometric center of the network area, with un...

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Abstract

The invention discloses a tree growth telemetering method and system based on a directional diffusion protocol, and particularly relates to the field of tree measurement of a man-made forest, and the method comprises the steps: carrying out the flooding propagation of interest information to a data node through a base station node, obtaining the distance between each node and the base station node in the flooding propagation process, storing the interest information and the forwarding times when the interest information in each propagation path is forwarded to each node to a node list of the corresponding node; acquiring the propagation path with the least forwarding times in the propagation paths, taking the propagation path as a data transmission path, and taking the rest propagation paths as alternative paths; and screening low-energy nodes and carrying out path replacement. Compared with a traditional DD protocol, the method has the advantages that the gradient establishment process is reduced, the network establishment time is greatly shortened, the network survival time is prolonged, and meanwhile the utilization rate of network energy is increased.

Description

technical field [0001] The invention relates to the field of tree measurement of artificial forests, in particular to a tree growth telemetry method and system based on a directed diffusion protocol. Background technique [0002] Tree height and diameter at breast height are important indicators of tree growth. Continuous and accurate measurement of tree growth in plots can not only reveal the growth laws of trees and forest stands, but also contribute to ecological research. The traditional single-wood measuring ruler has the disadvantages of manpower and time consumption, continuous measurement, and difficulty in integrating measurement and processing. It can no longer meet the needs of multiple applications in forest resource investigation. With the continuous development of information technology, the use of sensor technology for continuous and accurate remote measurement of tree growth has become a research hotspot. [0003] At present, the continuous telemetry mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/02H04W40/10H04W40/20H04W84/18
CPCH04W40/02H04W40/023H04W40/10H04W40/20H04W84/18Y02D30/70
Inventor 孙渊敬方陆明袁方星孙林豪郑似青杨来邦
Owner ZHEJIANG FORESTRY UNIVERSITY
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