Application Research Of Wireless Sensor Location And Tracking System Based On IOS Platform

With the rapid development of wireless sensor technology,feature-rich and wide range of wireless sensor products have gradually integrated into people's lives.In order to solve the problem of wireless sensor positioning,there have been many high-precision,low power,low-cost positioning technology.But now in the mobile Internet tide,the use of mobile terminals on the wireless sensor positioning solution is always not wishfull.These solutions typically place the satellite positioning module directly in the wireless sensor,or only allow the mobile terminal to position the target when it is within the coverage of the wireless sensor signal.In both cases,the former improves the cost and power consumption of the wireless sensor module,while the latter has a narrow range of applications.To solve this problem,a set of efficient,convenient,low-cost,low-power wireless sensor positioning system that can locate low power Bluetooth module based on the iOS operating system is designed and implemented in this paper.The system uses the iPhone as a control terminal to location the low-power Bluetooth module.In addition,the smart phone can use the RSSI ranging or Crowd-GPS technology to locate the wireless sensor depending on whether the smart phone and the target wireless sensor are within the reachable range.The main research contents and innovations are as follows:(1)Completed the design and implementation of the wireless sensor positioning system based on iOS operating system,including the configuration and development of the mobile client,wireless sensor and cloud server.At the same time,the wireless sensor,iOS development,server development and other related technologies were analyzed and studied.(2)Combined with RSSI distance measuring and Apple's new iBeacon technology to achieve locating wireless sensors using iPhone within the scope of the connection.(3)For the situation of iPhone and the wireless sensor is too far away from each other to be connected,this paper shows the idea of Crowd-GPS.That is,smart phones are regarded as "scouts",whenever the smart phone moves their own detected wireless sensor positioning "intelligence" will be uploaded to the cloud server.And when a user needs their own wireless sensor location information,they could just make a request to the cloud sever because the cloud server will keep all the latest wireless sensor device location information.This paper analyzes the feasibility of the Crowd-GPS technology in theory,and then achieve the Crowd-GPS positioning technology in the design.This Wireless sensor positioning system can meet people's daily needs.And it's very suitable for the positioning of people(such as the elderly,children),seeking items(such as keys,wallets),even bicycles,car parking location tracking and other daily needs.Now with the mobile Internet era of rapid growth,smart phones have been gradually popular in people's life.The design is based on mobile applications,and the system's scope of application and market prospects are very broad.