Experiment And Research On Wheat Precision Seeder Automatically Compensated Supervisory System

Seeding, which is the basis of ensuring high-yield and harvest, is an important link during the process of agricultural production. At present, the most-widely used precision seeder is the mechanical seeder. In the course of seeding, sowing is in a completely closed state and handler judges the work condition and quality of the machine mainly by experience, which lacks accurateness and science. This will result in one or more lines to be left and the decrease of agricultural harvest. Therefore, for precision seeder, it has a deep influence to equip it with highly reliable and perfect parameter observation of the seeders working condition and to use the automatic compensatory system to compensate the lines neglected automatically and improve the quality of seeding in order to realize the idea of intelligentized seedingIn this paper, compensation of wheat precision seeder automatic is a monitoring system. On basis of ordinary precision seeder, combining sensor technology with automatic control technology is to take advantage of advanced monitoring and control technology to improve the performance of system and make the precision seeder intellective and automation. If seeder comes into trouble, the system can automatically monitor and sound and light alarm system and notify the driver the location and nature of this trouble in time. If the discharging-seed device comes into trouble, the system can be automatic compensation until stopping, which can avoid omitting seeds on a large scale and greatly improve the work quality and intellective level of the seeder.Comparing with and analyzing present domestic and international similar system, this paper analyses the overall plan of the intellective system and designs hardware of the system in accordance with the requirements of the system. Main content contains the design of monitoring the electric circuit, sound and light alarm electric circuit, expansion of single-chip system and design of circuit,displaying system electric circuit, D/A conversion electric circuit and so on. System software uses assembly language to write a program for system monitoring and adopts the thinking of modular. It can be divides into four major parts, namely, module of receptor's testing electric circuit and gathering signals, modules of revealing the seeder's condition timely, module of alarming with sound and light and controlling the electric circuit and module of automatic compensation of seeding with the force from engine.Through the final comprehensive adoption and test, it shows that the whole system can run accurately and reliably and has achieved the expected goal basically.