International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 05 | May -2017
p-ISSN: 2395-0072
www.irjet.net
Indoor Person Tracking Using Wireless Technology Pranjali Dhumal, Rutuja Shewale2, Tejaswinee Bhandari3 , Prof. Vivek Nikam Department Of Computer Engineering, Keystone School of Engineering. Savitribai Phule Pune University. Pune, India. ---------------------------------------------------------------------***--------------------------------------------------------------------2. ARCHITECTURE DESGIN Abstract - Now-a-days the importance of tracking the persons location indoors i.e. inside a buildings, organization is increasing, as it saves time and reduces delays caused in work. This paper represents real-time tracking of the person using Wireless Technology. This system makes use of Bluetooth Low Energy (BLE) beacons and Raspberry pi micro-controller. The beacons provide the person’s identity while the microcontroller provides location. The system architecture and implementation results are illustrated in this paper.
In this Section, we will briefly describe the system. The structure of the system is presented in the Figure 1. This system contains four major components i.e. Bluetooth Low Energy beacon, raspberry pi 3B microcontroller, central system and a display unit.
Key Words:
indoor person tracking, Wireless Technology, Bluetooth Low Energy (BLE), Raspberry Pi
1.INTRODUCTION Indoor sensing system has become very popular in recent years. Indoor sensing is basically asset tracking or person tracking. Asset tracking means identifying the position of a particular asset or a thing within particular area. Person tracking means tracking person position after a particular interval. People and assets are tracked in many areas of life to serve a number of purposes, some with good intentions and some bad. An indoor person tracking system is a system to track person inside buildings using sensory information advertised by tags and collected by wireless devices. Wireless technology constitutes a popular area research in indoor person tracking system [2]. Majority of people spend their time indoors. In big organizations, like schools, colleges, government and corporate offices it is difficult to track latest indoor position of the person which is time consuming task. Indoor person tracking is technical challenge because Global Positioning System (GPS) does not work reliably within interior space. GPS uses the triangulation method but it produces approximate error of 10m. This error is tolerable outdoor but not indoors. The GPS signals don’t penetrate through the walls of the buildings. GPS and maps are great but they only work outdoors and with clear line of sight to the sky.
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Fig -1: The System Architecture Bluetooth Low Energy (BLE) beacons are provided to every member of the organization. BLE is a coin sized device that operates in 2.4GHz license free band. Each BLE has a MAC address. The raspberry pi acts a receiver which is installed in every area where the person needs to be tracked. The raspberry pi has both WiFi and BLE modules integrated. The BLE is a device which transmits packets after a given time interval. Let’s consider interval of 5 seconds. When the BLE comes in the range of raspberry pi, the raspberry pi receives the packets from BLE. Raspberry pi extracts the MAC address of BLE. It then forms a packet containing MAC address of BLE as well as Raspberry pi and forwards that packet to the central system. The central system contains database of the members of the organization. The database contains personal as well as professional details. The MAC address of BLE is mapped to the user id, as each user has a unique id. The MAC address of Raspberry pi is mapped to location name. Then latest information from the database is retrieved and sent to the display board. ISO 9001:2008 Certified Journal
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