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中文摘要：
本文设计了用于液氨冷库的氨气浓度、压力及库温的报警控制系统.该系统以工控机为监控中心,利用MCGS组态软件、485总线、MODBUS协议和数据采集器等,实现了对设备机房、冷冻室及操作室等各测量点数据的实时监测分析和统计,并实现了对报警器和引风机等执行机构的实时控制.
英文摘要：
This paper designs an alarm control system of ammonia concentration, pressure and temperature for liquid ammonia cold storage. The system uses industrial computer as the monitoring center, and makes use of the MCGS software, 485 bus, MODBUS protocol and data collector, etc, to take real-time monitoring analysis and statistics of measuring data for equipment room, freezer and operation room, and to take real-time controlling of alarms and induced draft fan.
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