Embedded Systems

GPS tracker for Blind people using GSM technology

The proposed project integrates both GPS and GSM technology to provide an efficient solution to track the disabled persons when they go missing or lost. There have been a lot of buzz lately about the reports that we are receiving about the number of persons that had gone missing. And a significant number of them are blind people who can’t tell the whereabouts when they gone missing.

This project ease this off by letting their families know about their location by sending the latitude/longitude as a sms. Also a special keypad will be embedded onto the system which can be used to send some specific sms to their families at times of emergency. The proposed system not only assures that their location is monitored but also assists at times of emergency to pass some sensitive information.

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The system has a GPS modem which continuously sends data string to the microcontroller. This data is nothing but the latitude and longitude information of the user’s current location. The data is then sent to the stored individuals as sms with the help of GSM technology. The system can also be automated in such a way that it will send the sms notification for every fixed duration to the registered users.

Project Description:

  1. GPS Modem: GPS modem get connected with the required satellites. Then it calculates co-ordinates of location. Then Microcontroller receives data from GPS modem.
  2. Microcontroller: Microcontroller communicates with Liquid crystal display. It also sends data to GSM module. 8051 communicates with input devices and output devices
  3. AT89S52: The AT89S52 is a low power, high performance CMOS 8-bit microcontroller with 8k bytes of in-system programmable flash memory. This is a powerful microcontroller which provides high flexibility and cost effective solution to many embedded control applications. It has the following standard features: 8K bytes of flash, 256 bytes of RAM, 32 I/O lines, watchdog timer, 2 data pointers, 3 16-bit timers/counters, on-chip oscillator and clock circuitry.
  4. LCD Display: Longitude and latitude is shown on LCD display
  5. GSM Modem: GSM (Global System for Mobile Communications) is a standard developed to describe protocols for second generation digital cellular networks used by mobile phones. SIM-900 GSM module will be used for this project. It is a type of modem that accepts a SIM card and operates over a subscription to a mobile operator, just like a mobile phone. It will be capable of sending and receiving SMS & MMS messages.
  6. MAX232: MAX232 is required since the communication level of 8051 and GSM modem is different
  7. Keypad: User can send emergency message using keypad

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Interfacing GPS with 8051 Microcontroller:

GPS – Global Positioning System is generally used to determine the location of a vehicle or a person from a remote location. These GPS modules are generally used to provide the location, position and navigation services to the users from anywhere on earth. There are about 24 to 32 satellites which facilitates the seamless working of GPS.

The main application for the GPS involves mapping, tracking and surveillance. The GPS module calculates the position of any user, by recognizing the signals that are transmitted by the satellites. GPS receiver calculates the distance to each satellite and the raw data is converted to latitude, longitude, altitude, speed and time.

Software requirements:

  1. Keil Uvision 3: Keil Software makes C compilers, macro assemblers, real-time kernels, debuggers, simulators, integrated environments and evaluation boards for the 8051, 251, ARM and XC16x/C16x/ST10 microcontroller families
  2. Programming language: Embedded C language

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Kit required to develop GPS tracker for Blind people using GSM technology:
Technologies you will learn by working on GPS tracker for Blind people using GSM technology:
GPS tracker for Blind people using GSM technology
Skyfi Labs Last Updated: 2019-12-07

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