1. VOICE OPERATED WHEEL CHAIR www.techtriks.wordpress.com www.techtriks.wordpress.com

2. Model Engg. College, Ernakulam Group Members: Nisha M SECU032/48 Sapna VasudevanECU032/32 Tintu Mary SkariahECU032/40 Senthil KumarECU032/34 Priyanka Susan GeorgeECU032/29 Projectwebsite: www.techtriks.wordpress.comwww.techtriks.wordpress.com Project Guide:Mr. Rajesh M V Sr. Lecturer Dept. of Electronics Project Co- ordinator: Mrs. Jibi John Sr. Lecturer Dept. of Electronics

3. To control the movement of a manual wheelchair by means of human voice for paralyzed patients. AIM:

4. BLOCK DIAGRAM MIC VOICE RECOGNITION IC MICROCONTR OLLER DRIVER CIRCUIT RIGHT MOTOR BATTERY CHARGER BATTERY LEFT MOTOR DRIVER CIRCUIT SPEED &DIRECTION CONTROL RESET

5. SPECIFICATIONS 1.MICROCONTROLLER: PIC16F877 2.VOICE RECOGNITION IC (options) a)HM2007 b) ISD 2500c) MSM6679 3. MOTOR DRIVER CIRCUIT (options) a) H-BRIDGE CIRCUIT USING MOSFET b) H-BRIDGE IC: LMD18245,LMD18200 4.MOTORS(DC): (options) a) GEAR DRIVEN b) CHAIN DRIVEN c) HUB MOTOR 5.BATTERY 6.BATTERY CHARGER CIRUIT

6. VOICE RECOGNITION IC ACCEPTS THE VOICE INPUT SIGNAL SPEED AND DIRECTION RECORDED MICRO CONTROLLER PROCESSES DATA PROVIDES CONTROL VOLTAGE TO MOTORS DC MOTORS DRIVES THE WHEELS OF THE CHAIR IN NECESSARY MODES

7. VOICE RECOGNITION IC  It’s a single chip CMOS voice recognition module with on-chip ADC, Voice analysis, Recognition process and system control functions.  A 10-40 isolated word voice recognition system, can be interfaced with external memory, key board, microphone etc.  Speaker dependant and speaker independent modules available

8. MICRO CONTROLLER:PIC16F877 High performance RISC CPU Only 35 single word instructions to learn All single cycle instructions except for program branches which are two cycle Operating speed: DC - 20 MHz clock input DC - 200 ns instruction cycle Up to 8K x 14 words of FLASH Program Memory, Up to 368 x 8 bytes of Data Memory (RAM) Up to 256 x 8 bytes of EEPROM Data Memory Up to 8K x 14 words of FLASH Program Memory, Up to 368 x 8 bytes of Data Memory (RAM) Up to 256 x 8 bytes of EEPROM Data Memory

9. MOTOR DRIVER  H bridge circuit used for controlling the DC motors.  CMOS/IGBT H-bridge modules available with different current and voltage specifications.

10. THANK YOU