【摘要】 LZY型智能流量显示积算仪选择MCS-48系列单片机中的8039作为主机,使用双积分式芯片14433完成A/D转换,用数字拨盘向仪表送入差压变送器满度流量值,且具有保持作用。瞬时流量值用四位数字显示,累计值用电磁计数器记录。在软件硬件中采取了有效的抗干扰措施,从而使该仪表具有精度高、灵活通用、停电信息不丢失、高可靠性等特点。更多还原

【Abstract】 In the LZY Flow Displaying Integrator a single chip computer 8039 of Mes-48 senes is used as its master unit. A double integral chip 14433 is used to complete A/D coversion. The digital coding wheel is used to set the full-scale flow quantites of differential pressure trasmitter to the instrument, which can be remain. Instantaneous flow is indicated in four digits, and accumulative flow are recorded by an electromagnetic couter. Since some efficient antdisturbance measures are adoped in its software and hardware, it has the characteristics as follow:high accuracy, wide and convenient uses, high reliability and no loss of information when pouer-off.更多还原