A system and method for automatic transplanting machine tray conveying positioning control system

Abstract

The present invention provides a control system and method for tray conveying positioning of an automatic transplanting machine, which relates to the field of agricultural machinery automation. The button and automatic button are used as the input; the programmable controller is used as the control core, and the programmable controller controls the pulse frequency and pulse number sent by the stepper motor driver as the output, and controls the stepper motor to drive the chain transmission mechanism to realize the longitudinal direction of the tray. Feed; the pulse frequency determines the rotation speed of the stepping motor, and the number of pulses determines the rotation angle of the stepping motor; by pressing the algebraic sum of the number of times of the micro-increase button and the micro-decrement button as the compensation amount, the algebraic sum of the theoretical pulse number and the compensation amount is calculated. Control the accuracy of the plug tray reaching the target seedling picking position, eliminate the positioning error of the plug tray, reduce the damage to the pot body of the plug tray seedlings caused by inaccurate positioning, and improve the transplanting efficiency and success rate of the plug tray seedlings.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery automation, and in particular relates to a control system and method for tray conveying and positioning control of an automatic transplanting machine. Background technique [0002] Transplanting can shorten the growth process of crops, improve the disaster and drought resistance of crops, reduce the need for secondary replanting, increase the growth cycle of crops, and improve crop yield and quality. my country's transplanting machines have broad market prospects. The officially announced "2012-2014 Catalog of Agricultural Machinery Products Supported and Promoted by the State" shows that there are 27 varieties of transplanting machines and 12 companies included in the catalogue. Semi-automatic transplanting machines are the main ones, with low transplanting efficiency and heavy manual workload, so time-saving and labor-saving fully automatic transplanting is the main direction for t...

AI Technical Summary

Problems solved by technology

A conveying and positioning device and method for an automatic pot seedling transplanting machine, the conveying platform is fixedly installed on the conveying platform, the conveying platform is equipped with a seedling tray conveying guide device, and the seedling tray is placed on the conveying platform between the conveying guide rails In between, horizontal conveying chain devices are installed on both sides of the conveying platform. Several tray push plates are installed on the horizontal conveying chain, and a transmission chain device is installed on the outside of the conveying platform. When the servo motor drives the transmission chain to rotate for a circle, the horizontal conveying chain The tray push plate on the top moves a certain distance accordingly, so as to realize the positioning and transportation of the supply and seedling trays. It mainly relies on the servo motor to drive the tray to move a fixed distance. Overshoot and out-of-step may occur during long-distance transportation, resulting in inaccurate positioning.

An automatic transplanting machine fetching and feeding control system and its control method, the positioning of the tray depends on a pair of through-beam photoelectric sensors, and the position of the tray is determined by detecting the shell of the tray hole. Due to the complicated field environment, this non-contact The detection is easily affected by dust and light, resulting in unstable operation

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