07-08-2012, 02:30 PM
ROBOTIC HAND ACTION WITH RESPECT TO HUMAN HAND ACTION
ROBOTIC HAND ACTION WITH RESPECT TO HUMAN HAND ACTION (1).docx (Size: 257.06 KB / Downloads: 26)
INTRODUCTION:
This project is based on VTU syllabus. The proposed system is based on ATMEL 89S52 µcontroller which is in our syllabus.
For doing this project we use some of the software like
Embedded C for programming the application software to the microcontroller.
Orcad schematic software is used for designing the circuit diagram for this project.
Express PCB software is used for designing the PCB for this project.
(Since PCB making is a big process and involves lot of machineries which are expensive, we are going to outsource this to the manufacturer.)
ABSTRACT:
In this highly developing society, time and man power are critical constrains for completion of task in large scales. The use of available technology is playing important role to save human efforts in most of the regular and frequently carried works e.g. most of the industrial jobs like welding, painting, assembly, container filling etc.
The human hand is the most complete tool, able to adapt to different surfaces and shapes and to touch and grasp. It is a direct connection between the exterior world and the brain. The aim of this project is to develop a Robotic hand which should act in accordance with the human human finger movements.
Hand is the end-effector for the humans, using the terminology of robotics. Position and orientation, touch or grasp give to the human the contact with
the exterior.
Although robot hand grasp has been extensively studied little attention has been paid to virtual human hand grasp. Virtual humans are an important tool for digital prototyping to save time and cost. Virtual human hand grasp is crucial for the virtual human to interact with the virtual
world.A virtual hand model can help us to understand a suitable range of mobility when the virtual human
hands reach for objects.
WORKING PRINCIPLE:
We place finger sensors on human hand with respect to which our robotic hand should move. These sensors are connecter to microcontroller which in turn is connected to RF(Radio Frequency) Transmitter. This part will send the information about finger movements wirelessly.
On the other side the robotic arm which is constructed using DC/Stepper motors is connected to microcontroller which is in turn attached with RF(Radio Frequency) Receiver. With respect to the information received from the transmitter the microcontroller will be responsible for controlling DC/Stepper motor rotations which should resemble original human hand movement.
COMPONENT DESCRIPTION:
Power supply:
The microcontroller and other devices get power supply from AC to Dc adapter through voltage regulator. The adapter output voltage will be 12V DC non regulated. The 7805 voltage regulators are used to convert 12 V to 5VDC.