War robot with night vision camera android application

Submitted byDHEERAJ KUMAR SUSN- 1GC10EC012

Under the Guidence of Mr.Athul ghosh P

ELECTRONICS AND COMMUNICATION ENGINEERING,GHOUSIA COLLEGE OF ENGINEERING RAMANAGARAM.

• Seminar overview• What is robot and Why we use robots• Block diagram(TRX and RX)• Microcontroller 8051• Motor Driver IC• Android App and Bluetooth Device• Brief explaination and Working • Advantages • Applications• Conclusion

In this Seminar ,lets know how to design and develop a robotic vehicle using android application for remote operation.

This robot along with night vision camera can wirelessly transmit real time video in a peace darkness.

This is kind of robot can be helpful for spying purpose in war fields…

The whole path that the robot traverse is being seen by the wireless night vision camera that is placed on robot and accordingly the video signals are sent by the camera for the direction it traversed.

Remote operation is achieved by any smart-phone/Tablet etc., with Android OS, upon a GUI (Graphical User Interface) based touch screen operation.

An automatic industrial machine replacing the human in hazardous work.

Ex:• A machine removing

mines in a war field all by itself and many more…

Flying robot

Industrial robots

WHY ROBOTICS ?• Speed.• It can work in hazardous/dangerous

environment.• To perform repetitive task.• Efficiency• Accuracy• Adaptability

It is a smaller computerHas on-chip RAM, ROM, I/O ports...Microcontroller used is AT89S51 form 8051 family.Work in a serial communication UART mode the communication isconfigured on 9800bps to communicate it with the Bluetoothmodule.

RAM ROM

I/O Port

TimerSerial COM Port

Microcontroller

CPU

A single chip

• 8K Bytes of In-System Programmable (ISP) Flash Memory

• 4.0V to 5.5V Operating Range• Fully Static Operation: 0 Hz to 33 MHz• 32 Programmable I/O Line• Three 16-bit Timer/Counters• Full Duplex UART Serial Channel (universal asyncronous receive and Transmit)

Android is an open-source operating system which means that any manufacturer can use it in their phones free of charge.

It was built to be truly open. For example, an application can call upon any of the phone’s core functionality…..

An android app is meant for phones with an android based operating systems. They can be downloaded from the android app Market which is pre-loaded on every android phone.

Blue control App and Bluetooth Spp APP are some examples.

ANDROID OS : Android is open source software, manufacturers

can modify the operating system to suit their respective needs and phones. This becomes a cheap and feasible alternative for the manufacturer, as opposed to developing an operating system in-house or hiring a software company to do it.

Windows Phone:

Windows Phone is a closed-sourced, which means that it is solely developed by the company and protected by copyright. The Windows Store is limited as there only a few number of apps

The Android platform includes support for the Bluetooth network stack, which allows a device to wirelessly exchange data with other Bluetooth devices.

The application framework provides access to the Bluetooth functionality through the Android Bluetooth APIs.

 • Super simple and easy way to interface

using Bluetooth stack.• 3.3V Device with standard 5V DC Power source.• Bluetooth operates in the range of 2400–

2483.5 MHz (including guard bands).• Low power consumption, Low cost.• Has high-performance wireless transceiver system• Can be used to interface with PC, Mac or Android

phones/tablets.

Generic Default Visibility at Software side:HC-06 or Linvor

Default Pairing code is not '0000' but '1234'.

Works with any microcontroller with Serial serial communication UART mode the communication is 9800bps.

• Wireless camera detects and scan all the common video frequencies, usually somewhere between 50 MHz and 30 GHz, within a certain radius

• It then allow the user to monitor what is being broadcast on those frequencies, if the signal is strong enough, the wireless camera detectors usually transmits the real time video.

L293D is a dual H-bridge motor driver integrated circuit (IC).

Motor drivers act as current amplifiers since they take a low-current control signal and provide a higher-current signal.

This higher current signal is used to drive the motors.

L293D contains two inbuilt H-bridge driver circuits. In its common mode of operation, two DC motors can be driven simultaneously, both in forward and reverse direction.

• L293D has 2 set of arrangements where one set has input 1, input 2, output 1 and output 2 and other set has input 3, input 4, output 3 and output 4, according to block diagram if pin no 2 & 7 are high then pin no 3 & 6 are also high.

• If enable 1 and pin number 2 are high leaving pin number 7 as low then the motor rotates in forward direction.

• If enable 2 and pin number 10 are high leaving pin number 15 as low then the motor rotates in forward direction.

If enable 1 and pin number 2 are low leaving pin number 7 as high then the motor rotates in reverse direction.

If enable 2 and pin number 15 are high leaving pin number 10 as low then the motor rotates in forward direction.

We have come up with another innovative way to control a robot. Now we can controlling the robot from an android phone (with a Android GUI application) over bluetooth. In this seminar ,we uses our favourite 8051 microcontroller and HC-05 bluetooth module.

In this seminar 8051 and bluetooth module are communicating over uart @9600bps. Bluetooth module HC-05 is controlled and works on 3.3v power supply. The BT module can be connected easily to any controller or embedded device.

L293D H-Bridge motor driver are used to control two DC motors.

The wireless night vision camera embedded on the robot consists of a wireless transmitter. A cluster of IR LEDs are placed. The reason IR light is preferred is because at night time, it is usually dark and since any camera needs light for illumination, infrared light is the most preferred option as all objects emit a range of Infrared light. The camera is powered with a 12 V battery and captures these images and transmits them to the receiver unit connected to a Television unit. The images are converted to digital signals by the transmitter unit and the receiver unit receives these digital signals and reconverts them to images.

These images or videos are then monitored and analyzed on a Television unit.

Advantages Streaming of Video without visible light Inbuilt option to switch ON & OFF IR lights

when required

Disadvantages Limited distance of operation(50ft) Video is Streaming but not recording

THANK YOU

QUERIES