摘要
以果蔬真空预冷机的控制系统为例,分析其结构和工艺原理,采用小型PLC代替传统的继电器控制,进行了PLC选型和程序设计,实现了果蔬真空预冷机的PLC自动控制,从而提高了预冷机的可靠性和自动化程度,对通用真空预冷控制系统的设计具有借鉴意义。
The control system of a vacuum cooler for fruits and vegetables was designed based on S7-300 PLC （Programmable Logic Controller）.The traditional relay control system was replaced by the small-scale PLC.This new PLC control system can control the refrigerating machine,the vacuum cooler, a series of valves automatically. As a result,the reliability of the vacuum cooler was improved.
出处
《食品工业科技》
CAS
CSCD
北大核心
2010年第3期320-321,324,共3页
Science and Technology of Food Industry
基金
上海市重点学科建设项目(S30503)
教育部新世纪优秀人才计划(07-0559)
上海高校东方学者计划
