GPS-GSM Based Vehicle Tracking System Using Microcontroller

GPS Vehicle Tracking System This article mainly focuses on the idea and logic behind GPS Vehicle Tracking System with remote monitoring and security access using mobile phone. The GPS-GSM module is interfaced using a single microcontroller and the real-time GPS location of the system is inquired using SMS feature. The system is designed to operate only by the registered users. There is an option to add or remove the users in real-time. How does Car Tracking System Work? The GSM Module is used to manually interface with the system, through the SMS feature. To know the GPS location of the object, the user has to send an SMS to the system with a predefined template. The system will read the message and acquires the GPS location instantaneously. Then after, the system sends an SMS to the user with the GPS data i.e. Latitude and Longitude as a message. Thus, an object or a system is traced. How Vehicle Tracking System Works? To track a vehicle, a continuous stream of data is required. So, by sending an SMS to the car with a tracking template, the system will continuously update the GPS location of the object through SMS, until a stop indication is sent. The update frequency is sent along with the tracking template. This frequency is in terms of minutes, i.e. for example if the frequency mentioned is 5 then the system will update the data (sends SMS) after every 5 minutes. This value ranges from 1 to 10 and this can be varied to desired range in the program. Is the GPS Based Vehicle Tracking System Secure? Yes, the system is secured. The system will respond positively, only to the messages received from the authorised contact numbers. The system is built with user verification feature that filters the unauthorised contact numbers, making the system secured. So, even if anyone gets the contact number of the system, they cannot communicate with their mobile phones until you authorise their contact numbers. Is it possible to add a new contact number in real-time? Yes, the system is designed to add new users (contact numbers) in real-time. Also, the authorised users can be deleted. Through the respective message templates, new contact numbers can be added and the existing contact numbers can be deleted from the memory. All these contact numbers are stored in the EEPROM of the microcontroller (Choose a microcontroller that contains inbuilt EEPROM). Adding a New User In order to add a new user, a registered user has to send 3 as a message to the system and the system will send a template to add a user. The template is as below, Add User (User Name) (10-Digit Number) Edit the User name up to 10 letters Edit the 10-Digit mobile number and send The braces should not be removed because they are used as identifiers in the program code. The new user details will be updated in the EEPROM also. Removing a User In order to remove a user from the system, a registered user has to send 4 as a message to the system and the system will send a template to remove a user. The template is as below, Users List 1. User1 1234567890 2. User2 0123456789 To remove user#1 reply RU1 By sending RU1 user number 1 will be removed from the system permanently. If there is only one user in the list, the system does not accept the request to remove the user, as the system cannot be operated then after. However, it is better to program a contact number of a user within the program...
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