【摘要】 根据市场对颗粒食品分装精度和分装速度的要求,提出了粗、精两级定量并行工作,流水式分装的设计思想,并以C8051F350单片机为核心设计了颗粒食品定量分装机控制系统.系统利用单片机内部高精度A/D转换器,实现了称重信号的转换和数据采集;采用单片机控制晶闸管的导通时刻,从而准确控制电磁振动给料器的振幅和振动次数,使给料均匀、准确;采用多道程序设计,实现了粗、精定量并行执行,流水式作业,既保障了定量精度又提高了分装速度.系统经过安装调试和生产试验,运行稳定可靠,取得了良好的应用效果.更多还原

【Abstract】 To meet the demand for high packing precision and packing speed for granular food,the article proposed the idea of parallel operation of coarse quantitative packing and fine quantitative packing and the idea of assembly-line packing operation,and designed the control system of a quantitative granular food packer by use of a C8051F350 singlechip as the kernel.The system could achieve weighing signal conversion and data acquisition by high-accuracy 24-bit A/D converters in the singlechip;the singlechip was used to control the conduction time of a thyristor so as to accurately control the amplitude and the vibration frequency of an electromagnetic vibration feeder,thereby achieving uniform and accurate feeding;and the article adopted the multiprogramming design to achieve parallel operation of coarse quantitative packing and fine quantitative packing as well as the assembly-line operation,which ensured the quantitative precision and improved the packing speed.After installation,debugging,production and tests,it was proved that the system was stable and reliable in operation and had good application effect.更多还原