基于物联网的纬编MES系统研究

发布时间：2018-03-21 10:40

本文选题：纬编　切入点：物联网　出处：《江南大学》2017年硕士论文　论文类型：学位论文

【摘要】：本课题研究开发的是基于物联网的纬编制造执行系统。纬编行业是针织领域的重要组成部分,近年来,由于纬编企业发展迅速,在规模、员工数量、订单量、产量等方面都呈现不断增长趋势,与此同时,所需要的数据信息不断扩大。传统的依靠人工手写、卡片记录等办法由于信息可靠性不高、不真实、容易发生失误等原因已经不再适用现今的纬编车间。而且,纬编行业产品、工艺种类繁多,计划变更频繁,企业管理人员无法实时了解车间生产现状,造成企业随机变化能力低,解决方案不及时,生产能力降低。为此,企业必须通过数字化车间、科学的管理等模式节约原料,降低成本,提高产量,实现精细化管理。首先,在实地考察纬编车间后,了解企业生产现状,总结出企业目前主要存在以下问题,订单、机台安排不合理;工艺繁多,缺乏系统的整理;无法实时了解车间机器状态;产量记录滞后;企业沟通不及时。针对以上问题,以以下几个方面为系统开发准则:安全、稳定等,提出了采用B/S结构,开发三层架构的纬编MES系统:数据终端采集、分析与接收程序、Web功能层。其次,从数据采集、无线输送和接收分析显示三个方面介绍了纬编MES系统数据采集终端的开发。数据采集的信息主要有速度、温湿度、产量等,所需工具有接近开关、温湿度传感器、RFID技术;数据传输、存储是基于ZigBee、Wi-Fi技术,主要实现数据从终端到工控机再到云数据库的无线传输。开发数据采集终端的工具是基于ARM的嵌入式操作系统,由底层采集、传输层和软件层组成。在数据传输过程中,数据采集终端和数据接收与处理模块之间需要定义严格的通信协议以便保障数据的正确传输与解析。最后,在云数据库中建立了MES数据库,并根据企业实际需求设计了各个数据表的结构。最终以ASP.NET为开发技术,C#为开发语言实现了本系统的Web页面功能。包括登录、实时生产、各信息模块、产品工艺、订单队列、统计分析等功能模块,企业各负责人可在页面上随时随地查看车间生产现状,各部门负责人可在页面上录入订单、工艺等基础信息,也可实现产量自动统计。本课题在了解企业需求的基础上,采用物联网技术,设计开发了数据采集终端,可实现机速、温湿度、产量、运行时间等数据的实时采集,并将所需的信息采用物联网技术传输到了云数据库。在Web应用层,对云数据库的数据进行了处理统计和显示。该系统的开发代替了手工记录产量、人工统计分析产量,并对各个订单、工艺进行了汇总,使企业管理人员及时了解车间生产现状,随时应变突发状况,使企业管理流程更加精细化。
[Abstract]:This subject studies and develops the weft knitting manufacturing execution system based on the Internet of things. The weft knitting industry is an important part of the knitting field. In recent years, because of the rapid development of weft knitting enterprises, in the scale, the number of employees, the quantity of orders, Output and other aspects are showing a growing trend, at the same time, the need for data information continues to expand. Traditional manual handwritten, card recording and other methods because of the information reliability is not high, is not true, It is no longer suitable for today's weft knitting workshop. Moreover, there are many kinds of products in the weft knitting industry, and the plan changes frequently, so the enterprise management can not understand the production status of the workshop in real time. As a result of the low capacity of random change, the solution is not in time, and the production capacity is reduced. For this reason, the enterprise must economize raw materials, reduce cost, increase output and realize fine management by means of digital workshop, scientific management, etc. After investigating the weft knitting workshop on the spot, we know the present production situation of the enterprise and conclude that the following problems exist in the enterprise at present: unreasonable order arrangement, lack of systematic arrangement, lack of systematic arrangement, lack of real time understanding of the machine state in the workshop; In view of the above problems, the following aspects are taken as the system development criteria: security, stability, and so on. A weft knitting MES system based on B / S structure is proposed to develop the three-tier structure: data terminal collection, data collection, etc. Secondly, the development of data acquisition terminal in weft knitting MES system is introduced from three aspects: data acquisition, wireless transmission and receiving analysis and display. The data acquisition information mainly includes speed, temperature and humidity, output, etc. The tools needed include proximity switches, temperature and humidity sensors, RFID technology, data transmission, storage based on ZigBeen Wi-Fi technology, The development tool of data acquisition terminal is embedded operating system based on ARM, which is composed of bottom layer acquisition, transmission layer and software layer. It is necessary to define a strict communication protocol between the data acquisition terminal and the data receiving and processing module in order to ensure the correct transmission and analysis of the data. Finally, the MES database is established in the cloud database. The structure of each data table is designed according to the actual needs of the enterprise. Finally, the Web page function of the system is realized with ASP.NET as the development language, including login, real-time production, information module, product process, order queue, etc. Statistical analysis and other functional modules, the responsible person of the enterprise can view the production status of the workshop at any time and anywhere on the page, and the responsible person of each department can enter basic information such as order, craft and other information on the page. On the basis of understanding the demand of the enterprise and using the technology of the Internet of things, the data acquisition terminal is designed and developed in this paper, which can realize the real-time data acquisition of machine speed, temperature and humidity, output and running time, etc. In the Web application layer, the data of the cloud database are processed and displayed. The development of the system replaces manual recording and manual statistical analysis. All orders and processes are summarized, so that the enterprise managers know the production status of the workshop timely, emergency situation at any time, make the enterprise management process more refined.
【学位授予单位】：江南大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TS184.4

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