本科论文目录摘要…Abstract.…引言1控制系统设计1.1系统方案设计…31.2系统工作原理52项目硬件设计2.1主控模块62.2检测模块2.3驱动模块102.4电源模块112.5按扭模块132.6指示灯模块142.7系统传送机构142.8总体设计.153项目软件设计173.1软件开发环境及流程173.2项目程序设计…174项目调试…204.1项目硬件调试.204.2项目软件调试214.3项目总体调试22结论2324附录1程序梯形图26附录2指令清单28致29本科论文摘要随着科技的快速发展，国内耐火砖的生产工艺发展迅速，其中耐火砖的高度问题越来越被看重。因此，耐火砖的高度在验收的时候，必须要准确。目前大多数厂商都是利用人工进行检测，检测效率低下，精度也不高。为了解决这一问题，本设计利用PLC控制技术来实现自动分辨高度合格品以及废品，提升检测效率。本课题设计了一种基于PLC控制的工业耐火砖的尺寸标准检测装置。台达DVP14ES00T2型号PLC作为核心控制器，以传送带平面为基准，将三个光电传感器分别放置在特定的模具上作为检测模块。在系统开始时，利用42步进电机带动传送带将砖块模型运送至检测区域，通过光电传感器进行高度信号检测，将检测到的信号传送回PLC。高度合格，42步进电机将砖块模型运送到成品工位由人工卸载。如果高度不合格，42步进电机立即停止工作，红色LED报警灯常亮，人工卸下“废品”后，红色LED报警灯熄灭，42步进电机恢复工作，传送带继续运转直至检测下一砖块模型。通过软件与硬件方面的整体调试并进行实验，得出结论为在技术上可行，预期可以实现功能，准确、快速地完成高度测量加传送任务，较之前人工测量相比，效率显著提高。关键词：PLC:高度检测；光电传感器控制本科论文AbstractWith the rapid development of science and technology,the productionprocess of domestic refractory brick is developing rapidly,and the height andsize of refractory brick is more and more important.Therefore,the height andsize of refractory bricks must be accurate when they are accepted.At present,more manufacturers use manual detection,which is inefficient and low precision.In order to solve this problem,this design uses PLC control technology torealize the automatic resolution of highly qualified products and waste products,and improve the detection efficiency.In this paper,we design a size standard testing device of industrial firebrickand the conveyor belt plane as the benchmark,three photoelectric sensors areplaced in specific positions as the detection module.At the beginning of thesystem,the 42 step motor is used to drive the conveyor belt to transport the brickmodel to the detection area.The height signal is detected by the photoelectricsensor,and the detected signal is transmitted back to PLC.The height isqualified,42 step motor will transport the brick model to the brick unloadingstation.If the height is unqualified,the 42 step motor will stop workingimmediately,and the red LED alarm light will be always on.After the "scrap"isremoved,the red LED alarm light will be off,the 42 step motor will resumeworking,and the conveyor belt will continue to operate until the next brickmodel is detected.Through the overall debugging and experiment of software and hardware,itis concluded that it is feasible in technology,and it is expected to achieve thefunction,accurately and quickly complete the task of height measurement andtransmission,and the efficiency is significantly improved compared with theprevious manual measurement.Keywords:PLC;Height detection;Photoelectric sensor control