Optimization design of mechatronical control system of domestic oxygen producing device based on SCM

ZHOU Chuan-yun1， LI Han-ting1， MENG Fan-wen2
（1. Electronic Information Engineering Department， Jining Polytechnic， Jining 272037， China；
2. Mechanical and Electrical Engineering Department， Jining Polytechnic， Jining 272037， China）

Abstract： In order to solve the problems of high cost and overuse components of electric control system of domestic oxygen the producing devic，the SCM technique was used in the electric control system. After the analysis of the basic control function of oxygen producing device，the relation between the output result and input instruction was established. A method of combination design of upper computer and high speed SCM was presented. Upper computer uses 89C52 as the core of the system，and it can drive LCD display with man-machine interaction to handle operation commands. Lower computer uses STC12C2052 chip with mini package，and in the chip one clock period is equal to one machine period. The compressor and solenoid valve was controlled by signal conditioning and power drive circuit. In software design，the block diagram format was utilized to provide basic meanings and notable problems. The indexes such as density of oxygen in domestic oxygen producing device were evaluated. The required items of general technique standard for pressure swing adsorption（PSA） oxygen producing device were tested. The experimental results indicate that the electric system has the advantages of simple design，reliable operation and low cost. It can meet the requirement of mass production of the enterprise.
Key words： pressure swing adsorption（PSA）； oxygen producing device；single chip microcoputer（SCM）； control system； design