Fire Fighter Robot with Night Vision Camera (1).pptx
- 2. contents Project overview Block diagram Microcontroller 8052 RF Remote control RF modules Motor Driver IC Software requirements Schematic & Working of the project
- 5. Project overview This advanced project Fire Fighter Robotic Vehicle with Night Vision Camera allows a user to control a fire fighter robot equipped with water tank and gun remotely wirelessly for extinguishing fires. For this purposes the system uses an Rf remote for remote operation along with rf receive based microcontroller circuit for operating the robotic vehicle and water pump. The receiver circuit receives RF signals through RF based remote transfer users commands. The receiver circuit now decodes the data commands sent. It then forwards it to the microcontroller. Now the microcontroller processes these instructions and then instructions the vehicle motors to run the vehicle in desired directions. It also operates the water pump motor and pump direction motor to spray water based on users commands. This allows the user to operate the robot and put off the fire by standing at a safe distance. This robot body also has a wireless night vision enabled camera mounted over it. This night vision camera helps to direct the robot body in whichever direction as needed. This is because whatever area that will be captured by this wireless camera can be viewed in PC for reference. The robot operates within a 8 meter range of the remote. Thus this system helps to extinguish fire from a safe distance with the help of the water tank attached to the robot body.
- 8. Microcontroller It is a smaller computer Has on-chip RAM, ROM, I/O ports... RAM ROM I/O Port Timer Serial COM Port Microcontroller CPU A single chip
- 9. Features of MC 8052 8K Bytes of In-System Programmable (ISP) Flash Memory 4.0V to 5.5V Operating Range Fully Static Operation: 0 Hz to 33 MHz 256 x 8-bit Internal RAM 32 Programmable I/O Lines Three 16-bit Timer/Counters Eight Interrupt Sources Full Duplex UART Serial Channel
- 10. Block diagram of MC CPU On-chip RAM On-chip ROM for program code 4 I/O Ports Timer 0 Serial Port OSC Interrup t Control External interrupts Timer 1 Timer/Counter Bus Control TxD RxD P0 P1 P2 P3 Address/Data Counter Inputs
- 11. Pin out of 8052
- 12. Power on Reset circuit +5V 30 pF 30 pF 8.2 K 10 uF + 11.0592 MHz EA/VPP X1 X2 RST 31 19 18 9
- 13. RF remote control The circuit uses HT 12E, HT 12D encoder and decoder. 433MHz ASK transmitter and receiver is used for the remote control.
- 14. Features of RF Range in open space(Standard Conditions) : 100 Meters RX Receiver Frequency : 433 MHz RX Typical Sensitivity : 105 Dbm RX Supply Current : 3.5 mA RX IF Frequency : 1MHz Low Power Consumption Easy For Application RX Operating Voltage : 5V TX Frequency Range : 433.92 MHz TX Supply Voltage : 3V ~ 6V TX Out Put Power : 4 ~ 12 Dbm
- 15. RF Encoder & Decoder The HT 12E Encoder ICs are series of CMOS LSIs for Remote Control system applications. They are capable of Encoding 12 bit of information which consists of N address bits and 12-N data bits. The HT 12D ICs are series of CMOS LSIs for remote control system applications. This ICs are paired with each other. For proper operation a pair of encoder/decoder with the same number of address and data format should be selected. The Decoder receive the serial address and data from its corresponding decoder, transmitted by a carrier using an RF transmission medium and gives output to the output pins after processing the data.
- 16. MOTOR driver L293D 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.
- 17. Operation of motor driver 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.
- 18. Contd.. 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.
- 19. Working of project The project uses HT12E Encoder which converts 4 bit data to serial output which is then fed to the RF module for transmitting the same to be received by the receiver RF module the output of which is fed to HT12D the serial decoder IC, the output of which is fed to controller. The transmitting end MC is connected to a set of pushbutton. Thus while a particular button is pressed the program executed delivers corresponding 4-bit data which are then transmitted serially at port 1. The data so received at the receiver end of port 1 operates the motor through motor driver IC L293D as required being interfaced from the Microcontroller output port 2.
- 20. Wireless Camera 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 display the images.
- 21. Contd.. The transmitter is powered by a 6v battery in series with a silicon diode to finally develop required voltage for microcontroller circuit. The receiver is powered by a 12v battery in series with a silicon diode to protect the circuits from accidental reverse battery connection. 5V DC out of the 12V available from regulator IC 7805 is fed to the controller, decoder, the motor driver IC L293D pin 8 for operation of the motor.
- 22. Contd.. The receiving unit uses one more motor driver IC L293D for driving one DC Motor for arm operation with a boom mounted on its shaft. At the end of the shaft a nozzle is connected to a water tanks mounted water pump which is powered from “NO” contacts of a relay that is driven by transistor Q1 from the output of MC pin 15, thus in the event of a fire the robotic vehicle is moved over to the location by operating the left, right, forward & backward button etc. After it reaches the site the nozzle mounted motor takes position through the water on the fire from the water tank mounted DC pump actuated by the relay RL1. Thus the fire can be extinguished.
- 23. Software requirements Keil an ARM Company makes C compilers, macro assemblers, real-time kernels, debuggers, simulators, integrated environments, evaluation boards, and emulators for ARM7/ARM9/Cortex-M3, XC16x/C16x/ST10, 251, and 8051 MCU families. Compilers are programs used to convert a High Level Language to object code. Desktop compilers produce an output object code for the underlying microprocessor, but not for other microprocessors.
- 24. Contd.. i.e., the programs written in one of the HLL like ‘C’ will compile the code to run on the system for a particular processor like x86 (underlying microprocessor in the computer). For example compilers for Dos platform is different from the Compilers for Unix platform So if one wants to define a compiler then compiler is a program that translates source code into object code.