室內(nèi)超寬帶定位導(dǎo)航系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)
[Abstract]:Asset management is very important to any enterprise or institution. The characteristics of large number of assets, many kinds and scattered distribution bring a lot of difficulties to the work of asset managers. If we can get the change of assets in time and perceive the location information of assets, the efficiency of asset management will be greatly improved. Ultra-wideband (Ultra-Wide Band,UWB) has been widely used in indoor positioning and streaming media due to its fast data transmission, high time resolution and narrow pulse width. Based on this background, this paper designs and implements an indoor positioning and navigation system suitable for asset management, which has some advantages in map display and positioning accuracy. The main contents of this paper are as follows: 1. According to the practical application requirements, the system requirement analysis and performance analysis are completed. On this basis, the system design is carried out from four aspects: hardware module, driving software, application software and indoor 3D map. Using DW1000 from Decawave as UWB transceiver chip and Altium Designer2012 as hardware development platform. The software part consists of server, client, database and embedded software, with Unity3D,VS2015 and Keil5 as the software development platform. 2. According to the design of the system, the hardware and driving software of UWB node are realized in this paper, and then from user login registration, map view operation, (Point of Interest,POI) information query, location target display, navigation path display, User rights allocation and message processing module to achieve the application software. 3. This paper compares the commonly used wireless localization methods, and discusses the theoretical derivation process and their respective characteristics of the localization algorithm, including the Fang algorithm with analytical expressions, the Chan algorithm and the Taylor series expansion method in iterative form, Gao Si Newton method, and so on. The performance of different algorithms of ranging error under the condition of Gao Si distribution is analyzed by simulation, and the location methods and algorithms selected in this paper are determined according to the simulation results. 4. The test results show that the system has good function and performance. At high speed (6.8Mbps) and low speed (110kbps) transmission rates, the communication distances between the two nodes are 23m and 26m, respectively. In addition, compared with the traditional asset management system, the system is more realistic in map display. The combination of UWB indoor positioning technology and asset management system can effectively improve the efficiency of asset management, reduce the labor intensity of asset managers and the difficulty of system operation, and save expenses for enterprises and institutions.
【學(xué)位授予單位】:電子科技大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TN96;TN925
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