Development of singlechip based laser leveling control system

摘要

Land leveler with laser leveling control system not only reduces the work in crop establishment and management, but also reduces the amount of water required for normal growth, and increases the yield, and improves the quality and so on. However, for the uncertainty and nonlinearity of plant to be controlled, it is difficult efficiently to control using classical control. The laser leveling control system with singlechip not only can replace of all functions of traditional leveling machine controller, but also realizes the complex intelligent algorithm, such as fuzzy control. So, the singlechip based laser leveling control system has been presented. The system includes three parts: the laser transmitter, the laser receiver and the control box. The paper presents mainly the details of the laser receiver and the control system, and realizes a complex intelligent control algorithm. The laser receiver, which is the key for the control system, includes optical sensor, high frequency weak signal processing circuit, signal output circuit. The control system was realized using 80C51 single-chip computer and fuzzy control algorithm. The leveling field experiment in Beijing and in Guangzhou shows that the system realized functions of control successfully.