Development Of Real-Time Monitoring System In Wood Drying Based On Single-Chip Microcomputer

Wood drying is a very important process in the manufacture of wood products.The automatic control in wood drying is paid more and more attention for its advantages in improving quality,reducing energy consuming and cutting manual work cost.At present,the wood drying enterprises in our country are characterized with small in scale,dipersing in distribution and low in automation level.The purpose of the study is to improve the conditions in civil ones.In this paper, real-time monitoring software is developed based on the technology of Object Oriented Programming , Multi-thread, database and Windows communication. Analogue display of spot technological process is implemented based on the development technology of Delphi6.0.The analogue picture is vivid and convenient in operation. Besides,the database of wood drying experts knowledge is integrated in system.Also in this paper,the subsystem based on single-chip microcomputer 8032 is designed and the controller is made.The hardware cost is reduced a lot by developing the software functions sufficiently, which makes it meet the demand of civil small and medium enterprises .The main function of the subsystem is sampling and processing spot data ,controlling on spot equipment and communicating with superior monitoring center. PID control algorithm is employed .The control program based on modularization structure is convenient in debuging and transplanting .System real-time property is improved by the full usage of the interrupt function of 8032 CPU.The communication software is developed based on the technology of Windows communication and 8032 series port communication.The function test shows that the system is reliable in control ,convenient in operation and versatile in function .This study will benefit the restructure of the many small and medium wood drying systems in western China and the improvement of automation level of other civil wood drying enterprises.