基于PLC可降温垃圾箱的设计及参数优化

Design and parameter optimization of cooling dustbin based on PLC

餐厨垃圾成分复杂多样,含多种有机质及无机盐,夏季高温条件下易腐烂变质、散发恶臭,为降低餐厨垃圾在收集、储存环节的变质速率,对社区住宅的餐厨垃圾在处理前进行短时间降温,基于湿帘-风机降温装置设计了一种智能温控垃圾箱.垃圾箱内部分布若干温度传感器,采用西门子PLC进行控制,通过编程设定湿帘-风机装置的执行条件,利用PID算法进行软件优化,通过触摸屏实现数据可视化,实现湿帘-风机系统的智能化调控,维持垃圾箱内部温度在设定范围.经过系统调试及试验验证,结果表明:智能温控系统检测误差小于0.5℃,达到精度要求;在室外温度高达35℃时,垃圾箱内平均温度维持在25℃左右,满足餐厨垃圾的恒温储存要求.

Kitchen waste is composed of complex and diverse ingredients with a variety of organic matter and inorganic salts,which is perishable and foul-smelling under high temperature conditions in summer.To reduce the deterioration rate of kitchen waste in the collection and storage process and cool down the kitchen waste in community residences for short time before treatment,the intelligent temperature-controlled dustbin was designed based on the fan-pad cooling device.Several temperature sensors were distributed inside the dustbin and controlled by Siemens PLC.The execution conditions of the fan-pad cooling device were programmed,and the PID algorithm was used for software optimization,while the data was visualized by touch screen.The intelligent control of the fan-pad cooling system was realized to maintain the internal temperature of the dustbin in the set range,and the system debugging and test verification were conducted.The results show that the detection error of the intelligent temperature control system is less than 0.5℃,which meets the accuracy requirements.When the outdoor temperature is as high as 35℃,the average temperature in the dustbin can be maintained at about 25℃,which meets the constant temperature storage requirements of kitchen waste.