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Method and system for detecting plant leaf area index based on multi-sensor information fusion

A technology of leaf area index and area index, which is applied to the detection of plant leaf area index and the field of plant leaf area index detection of multi-sensor information fusion, can solve the problems of low detection accuracy and low detection efficiency of leaf surface index, and achieve accurate detection. High efficiency, strong anti-interference ability, and the effect of avoiding information blind spots

Active Publication Date: 2020-04-17
SOUTH CHINA AGRI UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to provide a multi-sensor information fusion method for detecting plant leaf area index in order to solve the problems of low detection efficiency and low detection accuracy in the prior art

Method used

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  • Method and system for detecting plant leaf area index based on multi-sensor information fusion
  • Method and system for detecting plant leaf area index based on multi-sensor information fusion
  • Method and system for detecting plant leaf area index based on multi-sensor information fusion

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Embodiment 1

[0054] Such as figure 1 and figure 2 As shown, the present embodiment provides a multi-sensor information fusion plant leaf area index detection system, the system includes a data synchronization unit 1, a laser radar sensor 2, an inertial measurement unit 3, a satellite navigation and positioning system 4 and a computing unit 5, The laser radar sensor 2, the inertial measurement unit 3, the satellite navigation and positioning system 4 are loaded on a car body 6, the specific functions of the data synchronization unit 1, the laser radar sensor 2, the inertial measurement unit 3, the satellite navigation and positioning system 4 and the computing unit 5 as follows:

[0055] The data synchronization unit 1 is used to realize the data synchronization between the laser radar sensor 2, the inertial measurement unit 3 and the satellite navigation and positioning system 4 based on the filter method of Kalman (Kalman); wherein, the data obtained by the laser radar sensor 2 is For ...

Embodiment 2

[0075] Such as figure 2 As shown, the present embodiment provides a kind of plant leaf area index detection method of multi-sensor information fusion, and described method comprises the following steps:

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Abstract

The invention discloses a plant leaf area index detecting method and system based on multi-sensor information fusion. The method comprises the steps that data synchronization between sensors is realized; a lidar sensor is used to scan the side of the canopy of a plant to acquire the two-dimensional laser point cloud data of the section profile of the plant canopy; the attitude angle of the lidar sensor is acquired through an inertial measurement unit, and the two-dimensional laser point cloud data are corrected according to the attitude angle; the positioning coordinate of the lidar sensor isacquired through a satellite navigation and positioning system; according to the positioning coordinate, the distance between two laser scanning points is calculated; the three-dimensional laser pointcloud image of the plant canopy is reconstructed by fusing the positioning coordinate and the corrected two-dimensional laser point cloud data; relevant parameters required for the leaf area index inversion calculation are acquired; a leaf area index estimation model is constructed; and the model is operated to acquire the leaf area index of the plant. Compared with the prior art, the method andthe system improve the influence of a bumpy road surface on measuring the leaf area index, and improve the leaf area index measuring efficiency.

Description

technical field [0001] The invention relates to a method for detecting plant leaf area index, in particular to a method and system for detecting plant leaf area index based on multi-sensor information fusion, belonging to the field of agricultural information detection. Background technique [0002] Sensors are an important tool for obtaining information, and their functions are similar to human perception organs. Multi-sensor information fusion (Multi-sensor Information Fusion, MSIF) technology is to obtain more information than a single sensor through the synthesis (integration or fusion) of multiple types of homogeneous or heterogeneous sensor data, and form a more reliable and more reliable information source than a single source. Complete fusion of information, it breaks through the limitations of single sensor information expression, avoids the information blind area of ​​single sensor, improves the quality of multi-source information processing results, and is conduci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/28
CPCG01B11/28
Inventor 宋淑然陈建泽洪添胜孙道宗薛秀云代秋芳张龙李民宇魏世君
Owner SOUTH CHINA AGRI UNIV
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