往复式划膜仪控制系统的设计

Design of Control System for Reciprocating Dispenser Instrument

摘要:

对国内外划膜仪进行研究,针对其存在的局限性,设计了往复式划膜仪控制系统；单片机控制高精度步进电机和滚珠丝杠,使划膜笔支架在X轴方向做往复直线运动,同时通过RS-232通讯与两台高精度工业注射泵协调,抽取试剂,在NC膜上均匀平稳地划膜；划膜浓度、速度和长度由按键输入并显示在LCD屏上；控制系统解决了划膜不均匀、划痕较重等问题,划膜笔间的距离在Y轴可调,能匹配生产需要,适用于速测试纸条的研发及生产。

Abstract:

By studying the theory of dispenser instrument at home and abroad, Considering the existing limitation of it, We designed control system for reciprocating dispenser instrument. SCM drive precision stepper motor and ball screw, making stents of crossed pen reciprocate in the X-axis direction, Simultaneously SCM communicate with high-precision industrial injection pump by RS-232,extract scribing solution, scribe on the nitrocellulose uniformly and steadily. Scribing density, velocity and length is input by key and displayed on LCD screen. The control system solves issues such as scribe unevenly and have heavy scratches etc., distance between crossed pens is adjustable in Y-axis, it can match the needs of production and is suitable for scientific research and production of colloidal gold strip.