Indoor Parking RSSI Fingerprint Recognition Technology Based On Positioning And Guidance Technology

With the development of the city,especially in recent years,the rapid development of Chinese cities,the emergence of many large commercial complexes,shopping malls,supermarkets and underground parking lots,users are not familiar with the terrain because of the many driver into the parking garage after I do not know where to stop the car to return to take the car and do not know the specific vehicle parked in what position,wasting a lot of time in search of parking spaces,to find a vehicle to and fro in the process.Thesis research design and construct parking indoor intelligent positioning and guidance technology that can quickly and efficiently guiding the vehicle to a parking space,and in taking the car can quickly retrieve their own vehicle positioning guide,so as to enhance the utilization of parking and access to vehicle efficiency.Now the rapid development of communication technology,sensor technology,chip technology and embedded software,wireless sensor technology is increasingly being applied to industrial production,daily life,due to the wireless sensor network node has the positioning function,medium and large parking lot to solve intelligent positioning guide provides a viable solution,in order to better solve the difficulties people looking for parking spaces,looking for vehicle parking difficult.Thesis undertake the following tasks:(1)research and analysis for selected medium-sized indoor parking construct wireless sensor network,the paper constructed by analyzing and comparing the selected use of ZigBee wireless sensor network technology.(2)for use of the indoor environment RSSI fingerprint algorithm selected wireless sensor positioned in the network environment.By positioning RSSI fingerprint matching fingerprint offline and online research income positioning anchor node may propose an alternative reference point to collect fingerprints,will save a lot of the workload off the fingerprint collection.Meanwhile,online matching positioning stage restrictions on the anchor node nearby unknown node,rather than through the convergence node,the root spread is calculated,improve network traffic,reduce power consumption and increase the localization in real time.(3)based on positioning results through the screen to guide the owner to park or retrieve the parked vehicles.(4)Parking boot prototype system to assess that the system in the positioning and overall performance can meet the design requirements.