International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar -2017
p-ISSN: 2395-0072
www.irjet.net
ROBO LEG Nikeeta Thorat1, Priyanka Shinge2, Akshata Kadam3, Prof. Poonam Bhosale4 1,2,3B.E.
Dept. of Electronics & Telecommunication Professor Dept. of Electronics & Telecommunication Sanjeevan Engineering and Technology Institute, Panhala, Maharashtra, India 4Assistant
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Abstract - This paper describes an information related with
direction motion, second key gives reverse motion and third one gives the automatic mode that is both forward and reverse motion having some amount of delay (30 seconds).
walking comfortably and safely for old age persons and paralyzed persons walk. It can be used in daily life to support the walking ability of physically challenged persons. Instead of taking six degree of freedom for robot we will have three degree of freedom (Hip-1, Knee-1, Ankle-1). By using these three degrees of freedom structure we can also overcome the cost and complexity of these project. It directly inspired from human walking analysis and muscles mechanism and control. Able to walk in various environments such as up slope, down slopes and some obstacle. Key Words: Paraplegia, walking support, humanoid robot
1. INTRODUCTION A robot leg is a mechanical leg and able to perform the same functions as that of human leg. It is typically programmed to execute similar function as that of human leg perform in their daily life. It is also called as prosthetic leg; however, the robotic leg can be controlled by electrically or by mechanically. To have robotic leg exhibit behavior of the human leg. People have rigidity, relaxation, involuntary contraction of the muscles and post-polio syndrome. Even if people do not suffer from these physical problem, aging bring various trouble on his/her mortality. Most of the people have the problem in there lower limb due to this symptoms or aging are unable to walk and bed ridden all day long with worst. Moreover, these depress the patient’s feelings and lose his/her the life of living. To relieve these problems and support the patient life, it is also important and provides a safe and convenient transportation device.
2. BLOCK DIAGRAM The main block is microcontroller 89S52.It contains 256*8-bit internal RAM. Battery gives the essential power supply required to the microcontroller. Output voltage of battery is 6V and output current is 4.5 mill ampere. To run the robo leg total three keys are used in this project. The first key give forward Š 2017, IRJET
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Fig -1: Existing Model
Fig -2: Modified Model Motor relay driver circuit consist of ULN2003 IC which is used to drive the relay. Relays are used because only low power signal is used to control the circuit. In this project four relays are used to drive two motors that is two relays for each motor. Each relay gives output voltage of 6V and each motor require input voltage of 12V respectively. Here two motors are used one is at hip joint and another is at knee joint. These two motors are DC motors. In DC motor the coil of wire which carries the current generated an electromagnetic field and by
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