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VOICE OPERATED WHEEL CHAIR www.techtriks.wordpress.com

VOICE OPERATED WHEEL CHAIR www.techtriks.wordpress.com

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VOICE OPERATED WHEEL CHAIR www.techtriks.wordpress.com

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  1. VOICE OPERATED WHEEL CHAIRwww.techtriks.wordpress.com

  2. Group Members: Nisha M S ECU032/48 Sapna Vasudevan ECU032/32 Tintu Mary Skariah ECU032/40 Senthil Kumar ECU032/34 Priyanka Susan George ECU032/29 Project website: www.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 Model Engg. College, Ernakulam

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

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

  5. SPECIFICATIONS 1.MICROCONTROLLER: PIC16F877 2.VOICE RECOGNITION IC (options) a)HM2007 b) ISD 2500 c) 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