Variable seeding control system and method based on pressure sensor

Abstract

The invention discloses a variable seeding control system and method based on a pressure sensor. An acceleration sensor is mounted on a seeding tank; the pressure sensor is installed at the lower port of the seeding tank; an actual seeding rate is calculated by detecting weight change of the seeding tank through data fusion among the sensors; after comparing the actual seeding rate and a required seeding rate, when a difference value appears between the actual seeding rate and the required seeding rate, the rotation speed of a driving motor for a seeding device is adjusted automatically to control the difference value between the actual seeding rate and the required seeding rate within a relatively small range and meet seeding uniformity, thereby preventing detection precision reduction caused by seeding manners of the seeding machine and a seed falling process; and the motor is faintly adjusted by using a fuzzy adjustment unit, so that error accumulation caused by calculating the size of the adjustment speed by using an empirical equation between the seeding rate and the rotation speed is prevented. The system is simple in structure, can well detect the seeding rate under a vibration environment, is low in cost, and has very good popularization prospects.

Description

technical field [0001] The invention relates to a pressure sensor-based variable seeding control system and method. Background technique [0002] Precision agriculture is a hot field of agricultural science research in the world in recent years. Precision seeding technology is an important part of precision agriculture technology, and it is an important means to greatly increase crop yield and maximize the use of agricultural resources. Variable seeding is an important part of precision seeding. It is an automatic control system that automatically adjusts the seeding rate according to the different seeding rates in different plots. On the one hand, due to the diversity of cultivated crops, different crop varieties, different geographical locations and different sowing seasons require different sowing quantities. Therefore, when sowing crops, the operator needs to adjust the sowing amount according to different sowing conditions. The amount is adjusted, and by inputting the...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a pressure sensor-based variable seeding control system and method. An acceleration sensor is installed at the frame of the seeding box, a pressure sensor is installed at the lower port of the seeding box, and the processor unit receives the data collected by the pressure sensor and the acceleration sensor. The signal is calculated and processed to obtain the accurate actual seeding volume. After comparing the actual seeding volume with the required seeding volume, when there is a difference, the speed of the drive motor of the seed metering device is automatically adjusted to make the actual seeding volume and the required seeding volume The error value of the amount of seed is in a small range and meets the uniformity of seeding; overcomes the problem of inaccurate control of the amount of emission in the prior art due to low detection accuracy of the amount of emission

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