Application of Programmable Logic Controller and Human Machine Interface for an Inspection Automation Mechanism

• Main Authors: Chih-Yu Chung, 鍾智宇
• Other Authors: Nai-Chieh Wei
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/29567568990195761585

碩士 === 義守大學 === 工業工程與管理學系碩士班 === 96 === With the rapid development of today’s industrialized technology, automatization has become an essential weapon for competition. Programmable Logic Controller (PLC), due to its high-level stability and consistency, and the low cost of its development, it has been playing a vital role as an important tool for the automatization of the manufacture industry in the process of automatization. Therefore, it was the hope of this paper to introduce lots of advantages of the PLC mentioned above into chemical experiments which need to be conducted repeatedly for a long time under poisonous environment with high-level consistency and accuracy but allowed only an extremely small error in the results. Based on the development of the PLC and the design of Human Machine Interface (HMI), this paper integrated a set of automatic equipments to replace human in those high-risk experiments, in order to reduce harms that human might suffer from chemical experiments, and to lower the allowable error so as to enhance the accuracy of the experiments. In this research, firstly, we divide the experiment process into several steps, and draw flow charts according to the analysis on the operation sequence and time-phased of every step. And then, select the hardware devices that meet the standards of the experiment to perform each experimental operation and to understand the function design of every device. Secondly, rewire the circuits of every device needed in accordance with the requirement of the system, and plug the proper interface connector to match the contacts of the PLC. Then, conduct software planning according to the flow chart and the wiring of the system, and use WinProLadder and View X to design the software and HMI of the PLC respectively, in order to actualize every operation and function needed for the software planning. Finally, run tests on the entire system, that is conduct experiments on every device respectively, and record the experiment results, and then perform comparative analysis on the results and the allowable error to make possible further improvements, and finally, come up with a set of automatic to replace manual operations , and to provide the experiment units with a better and more reliable experiments, which can be used for reference inrelevant chemical experiments in the near future.