Field positioning method based on wireless positioning device for agricultural machinery

Abstract

The invention discloses a field positioning method based on a wireless positioning device for agricultural machinery. The field positioning method includes steps that (1), a positioning point and a reference points are set; (2), the positioning point transmits activation instructions to actuate the peripheral reference points; (3), position signals carrying corresponding position information of the reference points are transmitted by the activated reference points, the positioning point receives the position signals, and the distance from the positioning point to each reference point is computed according to the intensity of the corresponding signal; (4), the number of the reference points corresponding to the received positioning signals is judged, if the number of the reference points is smaller than 3, the step (2) is repeated, and all the other reference points are controlled to sleep except for three reference points with the shortest distances to the positioning point if the number of the reference points is equal to or larger than 3; and (5), coordinates of the position of the positioning point are computed according to the position information of the three reference points with the shortest distances to the positioning point. The field positioning method for the agricultural machinery is high in positioning precision and low in power consumption, the positioning precision is irrelevant to the driving distance of the machinery, and cost is saved.

Description

technical field [0001] The invention belongs to the technical field of positioning wireless navigation, and in particular relates to a wireless positioning method for agricultural machinery in the field. Background technique [0002] In modern agricultural production, the positioning of agricultural machinery plays an important role in the production process. The precise positioning and navigation of agricultural machinery can effectively ensure its reliable operation and help increase crop yields. At present, there are mainly two methods for the positioning of agricultural machinery. One is to use GPS for positioning, and the GPS receiver receives satellite signals for absolute positioning. However, the current GPS positioning accuracy is generally 3-10m, and the positioning accuracy is poor, and its equipment is expensive. , and the accuracy will be reduced due to interference such as weather or occlusion, which limits the application of GPS positioning in agricultural mac...

AI Technical Summary

Problems solved by technology

The cost of the inertial sensor is low, and the initial accuracy is high. However, for the positioning device using the inertial sensor, there is a cumulative error. As the distance increases, the positioning accuracy will decrease, and it can only be applied to the positioning of agricultural machinery in a specific environment. Poor applicability, unable to meet the positioning requirements of agricultural machinery

Images