| Today,with the rapid development of technology,positioning technology has become the focus of research in the business community and academia.The application of positioning technology is everywhere in life.However,the positioning technology in indoor has a wide range of application requirements.Due to the complex environment in the indoor scene,large traffic volume and high positioning accuracy,how to achieve high precision,low consumption and low cost positioning in indoor scenes is an urgent problem to be solved.There are many mature positioning technologies in the indoor scene,but these technologies have certain advantages and disadvantages.This thesis has made detailed research on how the indoor magnetic field is used as indoor positioning signal,and has achieved certain results.The specific research work is mainly as follows:1.This thesis uses the geomagnetic field to realize the positioning of mobile devices in indoor scenes.Firstly,this thesis proposes a set of decomposition algorithm based on geomagnetic field information through the full research and analysis of the geomagnetic field.At the same time,the problem of the attitude angle deviation caused by the sensor accuracy of the smart phone device is solved.Secondly,according to the different readings of the geomagnetic field to the geomagnetic field,a set of geomagnetic fingerprint map construction scheme combining the wisdom of group intelligence is proposed.Finally,the geomagnetic field is used to realize indoor positioning work,and at the same time,the problem of updating the geomagnetic fingerprint map is solved.2.This thesis studies the problems faced by the parking lot during the peak period and proposes an indoor navigation mechanism for large parking lots.First of all,this thesis designs the optimal parking space selection model according to the user requirements of large parking lots,helping users to find the ideal parking space quickly and efficiently.Secondly,a set of global planning and navigation mechanisms is proposed based on the congestion of the parking lot during peak hours.The mechanism can effectively solve the blindness of the user when searching for a parking space in the parking lot,thereby improving user efficiency and alleviating the congestion of the parking lot.3.According to the research results,this thesis has realized a set of large-scale parking lot monitoring system with practical value.From the engineering point of view,the research results are combined with the practical application to construct a parking lot monitoring and navigation system with mobile terminal,management front end and service back end. |
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