基于PLC的食用菌多能互补烘干房控制系统设计

doi:10.13733/j.jcam.issn.2095-5553.2021.08.14

摘要/Abstract

摘要： 针对目前食用菌烘干行业自动化程度和能源利用效率低的状况,设计一种食用菌多能互补烘干房温湿度控制系统,旨在实现烘干过程中温湿度的自动控制,提高烘干效率。该系统以西门子S7-200 PLC为控制核心,基于分程变温的干燥工艺,将干燥过程分为4个干燥子阶段和1个中短波红外干燥阶段,通过温湿度传感器完成数据采集,通过控制继电器的通断达到升温和除湿的效果,实现烘干的目的。经过试验发现,系统运行稳定,拓展集热板和防雨布能实现自动展开回收,中短波红外灯通断稳定,排湿操作正常,温度控制精度±0.8℃,香菇干燥耗时12 h,干燥效率高于传统干燥设备。

关键词: 食用菌, 烘干, 温湿度, 控制系统, PLC

Abstract: In view of the low degree of automation and energy utilization efficiency of the edible fungi drying industry at present, a temperature and humidity control system of edible fungi multienergy complementary drying room was designed to realize the automatic control of temperature and humidity in the drying process and improve the drying efficiency. The system used Siemens S7-200 PLC as the control core, and the drying process was divided into four drying substages and one medium short wave infrared drying stage based on the drying process of splitrange variable temperature. The data acquisition was completed through the temperature and humidity sensor, and the effect of heating and dehumidification was achieved by controlling the onoff of the relay, to realize the purpose of drying. It was found that the system ran stably，the expansion heat collection plate board and rainproof cloth realized automatic unfolding and recovery, and medium short wave infrared lamps turned on and off stably. Also, dehumidification operation was normal, the temperature control precision was ±0.8 ℃，the drying time of lentinus edodes was 12 hours, and the drying efficiency was higher than that of traditional drying equipment.

Key words: edible fungi, drying, temperature and humidity, control system, PLC

中图分类号:

TP273
S226.6

翁小祥, 刘静, 奚小波, 张鹏飞, 张琦, 张剑峰, . 基于PLC的食用菌多能互补烘干房控制系统设计[J]. 中国农机化学报, 2021, 42(8): 101-108.

Weng Xiaoxiang, Liu Jing, Xi Xiaobo, Zhang Pengfei, Zhang Qi, Zhang Jianfeng.. Design of control system of multi energy complementary drying room for edible fungi based on PLC [J]. Journal of Chinese Agricultural Mechanization, 2021, 42(8): 101-108.

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