Agricultural machinery operation region measuring method and device based on triangulation

Abstract

The invention discloses an agricultural machinery operation region measuring method and device based on triangulation. The agricultural machinery operation region measuring method comprises the steps of: carrying out ground operation through using an agricultural machinery tool with a satellite positioning receiving antenna, and acquiring the operation position data of the agricultural machinery tool through the satellite positioning receiving antenna; preprocessing the operation position data set to remove error position data in the operation position data set, and projecting the operation position data set from a geodetic coordinate system to a plane space coordinate system by adopting Gaussian projection positive calculation; performing region division on all position points of the operation position data set based on the breadth and the maximum speed of agricultural implement operation; for each region, performing triangulation on the region by adopting a triangulation algorithm according to all operation position data in the region, and calculating the area of each triangulation to obtain the area of the region; accumulating the areas of all regions to obtain the total operation area of the agricultural machinery. The agricultural machinery operation area measuring method and the device are suitable for all-terrain area measurement, and the measurement precision is high.

Description

technical field [0001] The invention belongs to the technical field of measuring the working area of ​​agricultural machinery, and in particular relates to a method and a measuring device for measuring the working area of ​​agricultural machinery based on triangulation. Background technique [0002] Precision agriculture is the main direction of agricultural modernization development, precision agriculture includes precision operation of agricultural machinery. The precision operation of agricultural machinery mainly includes: precision farming, precision fertilizer application, precision irrigation and precision harvesting. The workload monitoring and quality analysis of precision agricultural machinery operations usually involve the measurement of the area of ​​agricultural machinery operations. For example, the combination of agricultural machinery operation area with the amount of chemical fertilizers and pesticides is used to realize the quality analysis of agricultural...

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Problems solved by technology

(1) Envelope line method of agricultural machinery operation area measurement uses vehicle-mounted satellite positioning equipment and software to measure and calculate the polygonal area of ​​the operation area as the agricultural machinery operation area. This measurement method is simple, but it cannot accurately calculate the area of ​​agricultural machinery operation in hilly and mountainous areas with undulating terrain. (2) The track and width product method is based on the vehicle-mounted satellite positioning equipment and software to obtain the agricultural machine operation track, and utilizes the track length and width product to obtain the agricultural machine operation area. This measurement method is simple, but this method cannot solve the problem. The problem of repeated operations; (3) The grid integration method first calculates the operation boundary according to the operation trajectory of the agricultural machinery, divides the operation area into grids according to a certain side length, and maps the operation position points to the corresponding grids, and finally through the statistical operation The product of the number of position points falling in the grid and the area of ​​each grid gets the agricultural machinery operation area

This method effectively solves the problem of repeated operations, but the calculation accuracy is greatly affected by the selection of grid side length and the operation speed of agricultural machinery, and the calculation amount is too large when the operation area is large

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