A device for measuring vegetation canopy structure parameters based on wireless sensor network

A wireless sensor and vegetation canopy technology, applied in the direction of measuring devices, network topology, wireless communication, etc., can solve problems such as unusable and limited use conditions, and achieve the effect of reducing image classification errors and reducing data storage capacity

Inactive Publication Date: 2012-02-01
BEIJING NORMAL UNIVERSITY +1
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Problems solved by technology

The conditions of use of the device described in this patent are limited in the forest environment, and a large gap under the forest is required to place the device
It cannot be used in low vegetation or continuous distribution vegetation, such as crops and grassland

Method used

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  • A device for measuring vegetation canopy structure parameters based on wireless sensor network
  • A device for measuring vegetation canopy structure parameters based on wireless sensor network
  • A device for measuring vegetation canopy structure parameters based on wireless sensor network

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Embodiment Construction

[0030] A kind of vegetation canopy structure parameter measurement device based on wireless sensor network of the present invention, comprises the wireless sensor network that is arranged in the upper space of research area canopy and lower space and the wireless sensor network that routing node 2 forms; Convergence node 3 and control Data processing and node control system composed of terminal and remote server.

[0031] Wherein, the measurement node 1 is composed of a photosensor for measuring the sun's transmitted radiation up and down the canopy, a data storage unit for temporary data storage, a real-time clock for providing acquisition time, and a wireless communication networking and The core chip of the node control operation and the power supply unit. The measurement node 1 is connected to the routing node 2 through wireless communication. Routing node 2 is the same as measuring node 1 in terms of hardware, but the protocol stack invoked on the driver is different. Th...

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Abstract

A device for measuring vegetation canopy structure parameters based on a wireless sensor network, which consists of a wireless sensor network composed of measurement nodes and routing nodes distributed on the upper and lower sides of the canopy in the research area, and a data processing and processing system connected by a converging node and a remote server of a control terminal. The node control system is composed of two parts; the measurement node obtains the vegetation parameter information by collecting the solar radiation above and below the canopy at different solar elevation angles in a day, and performs data transmission and positioning through the wireless ad hoc network; The data is uploaded to the control terminal through the serial port or GPRS, and the vegetation structure parameters are calculated through the data processing system; the control terminal sends commands to each node through the convergence node to modify the parameter settings. The invention has the advantages of small volume, low power consumption, convenient deployment and low cost, and is suitable for large-area and long-term vegetation parameter measurement. It has wide practical value and application prospect in the fields of agriculture and ecology and wireless sensor network technology.

Description

(1) Technical field [0001] The invention relates to a device for measuring vegetation canopy structure parameters based on a wireless sensor network, which is related to the data collection of vegetation canopy structure parameters and belongs to the technical fields of agriculture and ecology and wireless sensor networks. (2) Technical background [0002] Vegetation canopy structure parameters are an important index to study the growth and development state of vegetation, and also an important correlation parameter that restricts the model of land-atmosphere interaction process. Therefore, accurate acquisition of vegetation structure parameters is an urgent need to promote land surface model modeling and model verification. [0003] The vegetation structure parameters mentioned in the present invention refer to the vegetation canopy leaf area index (Leaf Area Index, LAI) and leaf inclination angle probability density function. [0004] The acquisition methods of vegetation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/00H04W84/18
Inventor 屈永华王锦地姜富斌董健吕芸帙焦思红
Owner BEIJING NORMAL UNIVERSITY
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