A wide variety of applications in the present age need the use of robots as opposed to humans. Robots can perform tasks which are hazardous for humans or inaccessible to them. The basic idea of this system is based on the problems that are related to the above fact. Designing an unmanned vehicle that can be controlled via remote device and move in places where humans might not be able to reach shall solve many problems of applications such as spying, surveillance, search and rescue and also in the domain of science and research. By making use of rapid growing technology in robotics and automation, a robot which can be controlled by a cellular phone equipped with GSM network, which acts as a wireless communication link between the robot and the cellular phone, has been designed.
There are many projects in real world where unmanned vehicles are used. There are also certain fields where unmanned vehicle can be introduced. The following few real world applications follow the key concept of using unmanned vehicle. This system is just a prototype built on these similar conceptual lines.
- Military Operations
The use of unmanned vehicle in military is not a new concepts. For decades unmanned vehicles are used as a human substitute. These vehicles have paramount importance in military because no human life is in danger while the operation is being performed.
The use of unmanned vehicle in case of commercial aviation is not popular, but certainly taken into consideration. However, its application in aviation other than commercial sector is widespread. An example would be Unmanned Aerial Vehicle (UAV) which does not facilitates a human pilot and is controlled remotely in order to perform military service, civil operations like firefighting and policing, surveillance etc.
- Space Exploration
Unmanned probes are sent in outer space in order to carry out research and aid in exploring our limited knowledge of space and universe. The land rover sent on Mars called Curiosity is a perfect example of automated unmanned vehicle.
- Rescue and Search Operations
There are some deleterious situations wherein the environment is new, hazardous or not suitable for human intervention. These conditions are mostly reflected in rescue and search operations where sending an unmanned vehicle is a perfect option.
Unmanned vehicles can also be used in civil operations like monitoring and surveillance. By doing so, the cost involved for the human workforce is drastically reduced.
RESULT AND CONCLUSION
5.2 Future Scope:
The designed used for unmanned vehicle in this paper can further be improved and enhanced to meet suitable needs according to its application. A camera can be mounted on top of it which can send videos and images to the remote phone connected via 3G or 4G network. Sonar and infrared (IR) sensors can be added which will fully automate the unmanned vehicle, sending surrounding information via sonar sensors and detecting and avoiding objects using infrared sensors. This added functionality will help the vehicle to maneuverer on its own after it loses the GSM network coverage.
In this paper, the design and implementation of the unmanned vehicle is explained. Introduction of robotics followed by the conventional approach of unmanned vehicle with Wi-Fi, Bluetooth and Infrared along with its shortcomings is illustrated. These drawbacks are overcome using the descripted hardware and software components. The algorithm along with program code is demonstrated. In summary, an unmanned vehicle is developed, with help of Arduino board using GSM network and DTMF tone, which manoeuvres in different direction by pressing a key on the keypad of a cellular phone which acts as a remote and is connected to the cellular phone attached to the vehicle via voice call.