摘要
Abstract
In order to improve accuracy and operational efficiency of petrochemical product weig-hing in the process of ration loading and unloading,optimize human resources and avoid all kinds of disadvantages of hand gauge, the design and implementation method of the bidirectional weighbridge unattended weighing system is proposed .The system was mainly comprised of weighbridges,infrared gratings,IC cards,cameras,barrier gates and so on .Based on the charac-teristics of the bidirectional weighbridge unattended system,the automatic control process was described in detail .The Micro850 controller was used to collect I／O field data,IC cards'numbers and the weighing data .The method of twice filtration was adopted to deal with the problem of da-ta instability and large measurement errors in weighing process .Meanwhile,the weighbridge un-attended system management interface was developed to strengthen supervision on site operation . The verification result indicated that the filtering algorithm could control weighing errors within 3‰,which met the requirements of industrial metrology .The system was put into practice .As an indispensable subunit,the weighbridge unattended system can realize the design goal of decentralized weight and centralized management in the process of building the storage and transportation system's au-tomation,informatization and management control integration,which is of great application value .关键词
无人值守/Micro850/自动过磅/数据滤波/监控管理Key words
unattended/Micro850/automatic weight/data filtering/monitoring management分类
信息技术与安全科学
