A device and method for detecting the flatness of dynamic paddy fields based on laser ranging

Abstract

The invention relates to a dynamic paddy field flatness detection device and method based on laser ranging, wherein the detection device includes a laser rangefinder, a connecting bracket and a processor; the laser rangefinder is installed behind the farmland operation vehicle through the connecting bracket, and the laser rangefinder Connected to the processor; the processor reads the measurement data of the laser rangefinder and performs data processing on it. The data processing includes coordinate transformation of the measurement data, threshold filtering and three-dimensional reconstruction of the field surface, and the standard for calculating the relative elevation of the farmland surface Poor S d and the elevation difference distribution ED, according to the standard deviation S d and elevation difference distribution ED to evaluate the flatness of paddy fields. The invention can accurately and quickly collect field surface data, process the ranging data in real time, reconstruct the three-dimensional field surface, and evaluate the field surface flatness according to the field surface elevation distribution column and standard deviation, and has high measurement efficiency, high degree of automation and simple implementation .

Description

technical field [0001] The invention relates to the technical field of measurement and control, in particular to a device and method for detecting dynamic paddy field flatness based on laser ranging. Background technique [0002] my country is a big agricultural country in the world, and agriculture is our traditional and basic industry, but at the same time our country is also a country with poor water resources. There are many paddy fields in southern my country, and the planting of paddy fields requires high flatness. Fine and flat paddy fields can greatly save irrigation water, improve the utilization rate of fertilizers and inhibit the growth of weeds, achieving the purpose of low cost and high income. [0003] The development of large-scale, refined and water-saving agriculture in China is inseparable from land leveling technology, and the detection technology of paddy field levelness is the basis and key to improving paddy field levelness. Flatness is a dimensionless...

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Problems solved by technology

[0004] However, the current research on the detection and evaluation of flatness in my country is limited to the fields of workpiece processing, product quality inspection, road condition detection, and building inspection, while there is little research on the detection and evaluation of paddy field flatness.

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