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一、概述本系统能控制一个大型粮食仓库的综合性生产及管理过程,譬如粮食储存容量的计量、粮仓中粮食温度的计量、进仓与出仓的控制管理等。该粮库是一个立式散装粮库,有33只高30米直径8米的圆筒储粮仓,系统处理的控制点及监视测量点有721点,涉及160多套件机电设备及闸阀门装置。粮库的生产工艺特点要求生产的长期连续性和可靠性。为改变人工现场手工操作和少量仪表控制的落后状态,对粮库生产提出如下的自控要求:实现各储粮筒仓温度的自动检测及报警、进仓及出仓的粮食的自动计量、储粮筒仓存粮的自动计量、储
I. Overview The system can control the comprehensive production and management process of a large grain storage warehouse, for example, the measurement of grain storage capacity, the measurement of food temperature in grain silos, the control management of entering warehouses and discharging warehouses. The grain depot is an upright bulk grain depot with 33 cylindrical storage silos of 30 meters in height and 8 meters in diameter. The system handles 721 points of control points and monitoring points, involving more than 160 sets of mechanical and electrical equipment and gate valves. The characteristics of the production process of grain storage require the long-term continuity and reliability of production. In order to change the hand-operated manual operation and the backward control of a small amount of instruments, the following automatic control requirements have been put forward for the production of grain storage: automatic detection and alarm of the temperature of grain storage silos, automatic measurement of grains in warehouses and warehouses, grain storage Silo storage of food automatic measurement, storage