Slide for brain controlled artificial leg
- 1. BRAIN CONTROLLED ARTIFICIAL LEGS Presented by, S . SIVAKUMAR III-ECE KONGUNADU COOLLEGE OF ENGINNERINGANDTECHNOLOGY
- 2. INTRODUCTION: Brain computer interface. It is a direct communication path between a human brain or animal brain and external device.
- 3. BRAIN WAVES There are four categories Beta waves(15-40 c/sec) Alpha waves(9-14 c/sec) Theta waves(5-8 c/sec) Delta waves(1.5-4 c/sec)
- 5. ELECTRODE CAP • It contains electrodes which are placed on the skull in an arrangement called 10-20 system. • Main function of the electrode cap is to take the brain signals in the form of electrical signals
- 6. AMPLIFIER Output signal from the electrode cap will be in the range of milli volt & microvolt Hence there is a need for amplification ADC Output signals are analog in nature So the signals are sent to ADC to convert the analog signals to the digital signals
- 7. SIGNAL PROCESSOR Using the ouput signal from the a/d conv. Parameter extraction, pattern classification & pattern identification are done. Then the signal is fed to FFT unit for simplifying the calculations MICROCONTROLLER UNIT It performs the robotic operations with the help of stepper motor It will control the operations like walking, running etc.
- 8. Appearance of artificial legs
- 9. POWER SUPPLY • It uses Li-ion battery • It require to charge once in 2days • The life time will be longer when compared to other batteries
- 10. DIFF. BETWEEN NORMAL AND BRAIN CONTROLLED ARTIFICIAL LEGS Brain Controlled Artificial Legs Normal Artificial Legs 1. Ease of Construction 1. Complex in construction 2.Cost is not more than Rs.5,00,000 2. Cost is about $80,000- $90,000(Rs.35,00,000 to Rs.40,00,000) 3.User can have full control over the artificial leg. 3. User cannot have full control over the artificial leg. 4.Semi-Automatic 4. Fully Automatic 5.Sensors are absent. 5.Sensors are present 6.Requires simple control unit. 6. Requires complex control unit.
- 11. conclusion • The performance of the proposed system will be better than the existing artificial legs • With the system life can be made easier for the differently abled persons
- 12. QUERIES ?