固体物料流量计二次仪表的研制

固体物料流量计是广泛应用于建材、粮食、冶金矿山、化工等行业的一种智能仪表。本文分析了冲板式固体物料流量计的工作原理,讨论了以8031单片机为核心的二次仪表的基本组成。经调试证明,该二次仪表的设计方案是成功的。     

Transportation — “Current on-board vehicle systems”

The paper reviews the current situation on-board microprocessor applications. It first describes the aspects of vehicle technology and performance that are the focus for on-board computing equipment, from engine management systems through to fully intergrated driver decision support. In the second section a wider perspective is taken by examining the interaction of the vehicle and its environment. The third and final section of the paper considers elements of communication which permit extensive transmission of vehicle and journey data for public and private use. The conclusion identifies factors which will influence the speed with which further applications will be adopted.     

固体物料流量计二次仪表的设计与实现

分析了冲板式固体物料流量计的工作原理,讨论了二次冲撞和物料滞留等因素对测量结果的影响。以8031单片机为核心,设计了固体物料流量计二次仪表的硬件系统和控制程序。调试证明,设计方案是成功的,它实现了以下功能;测量物料的瞬时流量并用数字显示和作D/A输出;测量累计流量并用效字显示;包装定量控制;瞬时流量超上/下限报警并输出开关量控制信号;能够方便地设定使用条件;提供两种弹簧非线性补偿方法——挂砝码和称重法;二次仪表本身的精度达到0.508％;设有进线滤波器的扰动复位功能,提高了抗干扰能力。     

利用可编程序控制器编程口与8031单片机实现数据显示

本着重介绍了一种利用ＰＬＣ的编程口（ＲＳ４２２口）与ＩＮＴＥＬ８０３１单片机系统实现数据传送而完成各物理参数显示的方法。