27-05-2013, 12:18 PM
GLOVES THAT TURN GESTURES INTO SPEECH
GLOVES THAT TURN.doc (Size: 57.5 KB / Downloads: 26)
INTRODUCTION
This Project is in co-ordinance to the DTE 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.
Proteous or Express PCB schematic software is used for designing the circuit diagram and the PCB for this project.
(Since PCB making is a big process and involves lot of machineries which are expensive, we the candidates will outsource this to the manufacturer.)
ABSTRACT:
Now a days the speech-impaired people not communicate better that is thing I have developed asset of gloves that turn hand gestures into speech using computer technology, offering hope to millions of speech-impaired people to communicate better.
Advantages: 1) in this project we learn about the sensor
2) How to interface the serial protocol of the RS 232?
3) How to interface the LCD (liquid crystal display)
4) How to design the regulated power supply.
COMPONENTS USED:
Power Supply - 5V/12V DC
Micro controller - Atmel AT89S52
LCD - 16x2 characters
RS232 Converter - MAX3232
RF T x/Rx - 433 MHz
SOFTWARE USED:
1. Embedded C Sensor calibration software
WORKING PRINCIPLE:
The device consists of a set of sensors an accelerometer, compass gyroscope and flex sensors in the figures, which translate movement into signals that a computer convent into speech. the person wearing the gloves draws a shape in the air and that information is transmitted to them via Bluetooth to a smartphone, which matches the shape up against a set stored in memory .a match produces a sound the other peoples
Hardware modules
1. Sensor circuit
2. Microcontroller module
COMPONENT DETAILS:
Power supply
Power supply unit contains adaptor, regulator, and filter. This will convert AC voltage into desired DC voltage. Adaptor is used for step down the voltage, regulator is used for removing AC components and filter is used to provide DC.
Vital role of power supply in ‘Design and implementation of wireless data transmitter’
The adapter output voltage will be 12V DC non regulated. The 7805/7812 voltage regulators are used to convert 12 V to 5V/12V DC.
Microcontroller - AT89S52
The AT89S52 is a low-power, high-performance CMOS 8-bit microcontroller with 8K bytes of in-system programmable Flash memory. The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry standard 80C51 instruction set and pin out.
Features
8K Bytes of In-System Programmable (ISP) Flash Memory
4.0V to 5.5V Operating Range
32 Programmable I/O Lines
Full Duplex UART Serial Channel
Vital role of Micro controller in ‘Design and implementation of wireless data transmitter’
In the transmitter part Microcontroller is used to read the data from serial port, when any data comes it will send the data into RF encoder to encode the data in 4 bit format.
In the receiver part RF Decoder will decode the data back to 4 bit mode, then the microcontroller will convert the data in 4 bit into ASCII format an it will display in LCD /serial port.
LCD is connected to microcontroller as 4 bit data mode, before displaying anything in LCD Initialization have to do ,so microcontroller will control the LCD initialization and select the data register and command register according to the purpose.
Buzzer is controlled by the microcontroller using single pins, I.e. giving high means device will switch on and vice versa. Sometimes it may be interchange according to the transistor used to drive the device.
LCD (Liquid Crystal Display)
LCDs can add a lot to your application in terms of providing a useful interface for the user, debugging an application or just giving it a "professional" look. The most common type of LCD controller is the Hitachi 44780 which provides a relatively simple interface between a processor and an LCD.LCD has single line/two line/four line display. Every line has 16 characters.
Vital role of LCD in ‘Design and implementation of wireless data transmitter’
LCD is connected to microcontroller as 4 pins for data and a single pin for register select and enable, LCD initialization is done by using microcontroller, before initialization the LCD have to wait for 30 ms delay.
The main application of LCD in this project is to display the transmitted/received data and will display the current status of the communication