基于数据融合技术的室内定位系统研究

发布时间：2019-05-21 11:01

【摘要】：我国目前在室外定位技术上可用的技术有GPS以及北斗两种,但是在室内定位上能用得到实际应用的技术并不多。而随着物联网技术的发展,在许多不同的领域上都对精确室内定位提出了需求,包括大商场的导航、物品追踪、学校内的学生定位等等,在此需求下室外定位技术不能够提供足够精度的定位数据,必须使用室内定位技术完成定位。专业的室内定位系统一般成本又偏高,在室内大范围布置的情况下应用成本难以控制。为了解决以上的矛盾,近年来对低成本的室内定位技术的研究一直得到诸多研究学者的青睐。本文依托长春市科技计划项目“高层建筑救援中被困人员准确定位和疏导系统研究”以及长春市科技计划项目“基于物联网的智能建筑信息集成关键技术研究与应用平台建设”,设计并实现了一套基于惯性系统以及ZigBee定位系统的室内定位系统。该系统在ZigBee定位技术的基础上,为了提升ZigBee定位的定位精度,增加了惯性系统,通过融合惯性系统的数据以及ZigBee定位系统的数据,得到更为精确的定位结果,在低成本的布置条件下获得较高的定位精度。经过测试,本文所设计的室内定位系统能够大幅度的改善单一的ZigBee室内定位系统定位精度较差的问题。通过卡尔曼滤波器结合惯性系统测量得到的惯性数据与基于RSSI的室内定位数据,将原有的基于ZigBee的室内定位系统的精度从2米左右提高到精度在50厘米之间,极大的改善了定位效果,具有一定的应用价值和研究价值。
[Abstract]:At present, there are two kinds of technologies available in outdoor positioning technology in our country: GPS and Beidou, but there are not many practical technologies that can be used in indoor positioning. With the development of Internet of things technology, the demand for accurate indoor positioning has been put forward in many different fields, including the navigation of shopping malls, the tracking of items, the positioning of students in schools, and so on. Under this demand, outdoor positioning technology can not provide enough accurate positioning data, and indoor positioning technology must be used to complete the positioning. The general cost of professional indoor positioning system is high, so it is difficult to control the application cost in the case of large indoor layout. In order to solve the above contradictions, the research on low-cost indoor positioning technology has been favored by many researchers in recent years. This paper relies on Changchun Science and Technology Planning Project "Research on accurate location and dredging system of trapped people in High-rise Building Rescue" and Changchun Science and Technology Plan Project "key Technology of Intelligent Building Information Integration based on Internet of things" and Application platform construction, An indoor positioning system based on inertial system and ZigBee positioning system is designed and implemented. On the basis of ZigBee positioning technology, in order to improve the positioning accuracy of ZigBee positioning, the inertial system is increased. By integrating the data of inertial system and the data of ZigBee positioning system, more accurate positioning results are obtained. High positioning accuracy is obtained under the condition of low cost arrangement. After testing, the indoor positioning system designed in this paper can greatly improve the poor positioning accuracy of a single ZigBee indoor positioning system. Through Kalman filter combined with inertial data measured by inertial system and indoor positioning data based on RSSI, the accuracy of the original indoor positioning system based on ZigBee is improved from about 2 meters to between 50 centimeters. It greatly improves the positioning effect and has certain application value and research value.
【学位授予单位】：吉林建筑大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN92

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