基于RFID的车间巡检定位系统的研究

发布时间：2018-04-03 22:41

本文选题：RFID　切入点：WiFi　出处：《陕西科技大学》2017年硕士论文

【摘要】：工业作为国民经济发展的支柱,既是衡量一个国家综合发展水平的尺度,又直接影响着人们的日常生活。工业现代化水平越高,社会发展速度也越快,人们的物质生活会相对丰富、充实,所以世界各国都在努力发展工业以求带动整个社会经济的发展。我国工业现代化建设经过几十年的发展,虽然已经取得了巨大的成就,但相对于西方一些发达国家还存在一定的差距,特别是随着工厂车间设备逐渐趋向于规模化、多样化和复杂化等方向发展,对车间巡检工作的信息化管理提出了更高的要求。针对当前车间巡检工作中出现的巡检不到位、工作效率低、巡检数据可靠性差、巡检记录信息易丢失及保管难度大等问题,本文围绕基于RFID的巡检定位系统展开研究工作,利用RFID技术、嵌入式技术及WiFi无线通信技术等现代化技术对巡检人员实施定位,并对设备巡检数据进行记录和管理,旨在提高设备巡检工作效率,确保巡检到位及巡检数据的可靠性,以便于对巡检数据实施统一管理。论文主要工作如下:(1)巡检定位系统总体方案设计。通过对RFID、嵌入式系统和WiFi通信等相关技术的分析研究,对比分析了几种常用的室内定位技术,考虑到应用场景及环境因素,选择RFID技术用于对巡检人员进行识别及定位;分析了RFID技术的工作原理并研究了射频系统的数据调制过程。同时,结合RFID与WiFi技术的优势,搭建以RFID技术为核心、以WiFi网络为数据传输媒介的巡检定位系统整体架构。(2)巡检定位系统的硬件系统选型与设计。根据系统的实际需要,设计了UHF射频读写器及手持终端,其射频芯片选用奥地利微电子的高度集成超高频RFID读写芯片AS3992,同时根据AS3992芯片的性能对所需的硬件设备进行选型。在此基础上,完成了控制模块、人机交互模块、数据采集模块及WiFi通信模块的芯片选择,分析了相关电路的设计原理,并完成对应的硬件电路设计及性能测试。(3)巡检定位系统的软件设计及上位机监测平台的设计。根据巡检定位的实施过程,完成了对μC/OS-Ⅱ系统的移植,重点对定位功能模块、液晶显示模块、数据采集模块及数据传输模块进行了软件设计。在上位机软件设计方面,利用计算机编程语言Visual Basic对上位机监测模块进行了软件设计,实现了对巡检人员的实时定位、设备巡检数据存储及考勤查询等功能。(4)RFID室内定位算法的研究。通过分析和研究RFID室内定位算法,提出一种适用于车间巡检的改进RFID定位算法。该算法是在VIRE算法的基础上结合非线性样条插值法通过计算得出目标位置。最后,利用MATLAB对算法进行仿真,通过数据分析与总结证明该算法有效地解决了VIRE算法使用线性插值法带来定位不准的问题,提高了系统定位精度,能够较好地满足车间复杂环境下对巡检人员的定位需要。基于RFID的车间巡检定位系统经过调试与测试,系统可以准确地实现对巡检人员位置的实时定位、巡检人员身份信息的识别、巡检与定位数据的传输以及上位机与无线网络的通讯等功能,为企业实时掌握设备运行状态提供了保障,并提高了企业的信息化管理水平。
[Abstract]:As a pillar industry of national economic development, is a measure of a country's comprehensive development level of the scale, has a direct impact on people's daily life. The higher the level of industrial modernization, social development faster, people's material life will be relatively rich, full, so all over the world are striving to develop in order to promote the development of the industry the social and economic construction of China's industrial modernization. After decades of development, although has made great achievements, but there is still a gap compared with some western developed countries, especially with the factory workshop equipment gradually tends to large-scale, complex and diversified development, put forward higher requirements for information management the workshop inspection work. According to the current inspection workshop inspection work is not in place, low efficiency and poor reliability of inspection data, inspection record information easily lost Problems and difficulty keeping large, this paper is focused on the research work of inspection positioning system based on RFID, using RFID technology, modern embedded technology and WiFi wireless communication technology to implement localization of inspection personnel, and record and management of equipment inspection data, in order to improve the inspection efficiency of the equipment, ensure the reliability of inspection and inspection data the implementation of unified management, in order to facilitate the inspection data. The main works are as follows: (1) the design of inspection positioning system overall scheme. Based on RFID, research and analysis of embedded system and WiFi communication technology, comparative analysis of several commonly used indoor positioning technology, considering the application scenarios and environmental factors, select the RFID technology for identification and localization of inspection personnel; analyzes the working principle of RFID technology and data modulation process of the RF system. At the same time, the combination of RFID and W The advantages of iFi technology, based on RFID technology as the core, the overall structure of inspection positioning system based on WiFi network data transmission medium. (2) the selection and design of hardware system inspection and positioning system. According to the actual needs of the system, the design of UHF RF reader and a hand-held terminal, the radio chip Austria microelectronics height integrated UHF RFID reader chip AS3992, and according to the performance of AS3992 chip selection of hardware required. On this basis, the control module, human-computer interaction module, data acquisition module and WiFi communication module of the chip selection, analyzes the design principle of the circuit, and completes the hardware circuit design and performance test the corresponding. (3) design software design and PC monitoring platform inspection positioning system. According to the implementation of the inspection location, the completion of the C/OS- II system transplant, focusing on the set A function module, LCD module, data acquisition module and data transmission module of the software design. In the aspect of software design, Basic software design of PC monitoring module by using computer programming language Visual, realizes the real-time positioning of inspection personnel, equipment inspection attendance data storage and query. (4 study on RFID) indoor positioning algorithm. Through the analysis and research of RFID indoor location algorithm, this paper proposed an algorithm for improving RFID positioning for workshop inspection. The algorithm is based on the VIRE algorithm with the nonlinear spline interpolation method by calculating the position of the object. Finally, the algorithm is simulated by MATLAB, through data analysis and summary proves that the algorithm can effectively solve the VIRE algorithm using linear interpolation method has the problem of inaccuracy, improve the positioning accuracy of the system, which can better meet the car The positioning of the inspector between the complex environment needs. Based on the workshop inspection positioning system RFID through debugging and testing, the system can accurately realize the real-time positioning of the inspection staff position, identify the inspection personnel identity information, inspection and positioning data transmission and host computer and wireless network communication function, provide a guarantee for the the real-time grasp the operation status of equipment, and improve the level of enterprise information management.

【学位授予单位】：陕西科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP391.44

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