A DESIGN OF A PROTOTYPIC HAND –TALK:ASSISTIVE TECHNOLOGY FOR THE DUMB

AIM:

The main aim of the project is to implementing a hand talk system for the dump people.

Purpose:

The dump people have difficulty in communicating with others like Who don’t understand sign language. In this purpose we are implementing this project.

BLOCK DIAGRAM:

MICRO CONTROLLER

MICRO CONTROLLER

MMA7660FC

LCDPOWER SUPPLY

VOICE IC

SPEAKER

Power Supply:

Description:

In this project we are using the mems accelerometer. This gives the readings of a particular object in three dimensions (x, y, and z). So if we move any object in any of the direction then the corresponding values are taken by the accelerometer.

In general, deaf people have difficulty in communicating with others who don’t understand sign language. Even those who do speak aloud typically have a “deaf voice” of which they are self-conscious and that can make them reticent. The Hand Talk glove is a normal, cloth driving glove fitted with MEMS sensors. The sensors output a stream of data that varies with degree of bend. The output from the sensor is analog values it is converted to digital and processed by using microcontroller and then it will responds in the voice using speaker. In this project we have used microcontroller, a speech IC and also speaker to produce the output.

Step DownTransformer

BridgeRectifier

FilterCircuit

Regulator section

TECHNOLOGY:

In this project we are using mems accelarometer sensor. ie: MMA-

7660fc is a low power, low profile capacitive micro machined accelerometer which

can detect freefall which can be used as a device protection mechanism. A well

known example of this is for disk drive head protection. It is a 3-axis accelerometer

commonly called as free fall detection sensor. Because of a sleep mode pin on the

accelerometer makes it ideal for the handheld battery powered electronics.

SOFTWARES:

1. Embedded C

2. Keil IDE

3. Uc-Flash

HARDWARES:

1. Micro Controller

2. Mems accelarometer(MMA7660fc)

3. power Supply

4. Voice ic(APR 9600)

Applications:

1.medical applications.

2.wheel chair direction controlling.

3.Robotic applications.

RESULT:

With this project we can design a hand talk system for the dump people.