CAREER POINT UNIVERSITYKOTA (RAJ.)

A Presentation onSmart Waiter

(Major Assignment)Session 2015-16

Submitted To:-Mr. Pankaj ChawlaHOD Of Electrical Dept.

Submitted By:-Ishan Jain(K11403)Vipul Golania(K10829)Ravindra Fagna(K11797)

Table Of Content

1. Introduction2. Components Used

2.1 Microcontroller Atmega82.2 L293D Motor Driver2.3 16*2 LCD Display2.4 Crystal Oscillator2.5 Voltage Regulator IC2.6 DC Motors

3.Block Diagram4. Working5. Advantage6. Future Scope7. Conlusion

Introduction

In the hotels when any customer arrive then the target of hotel management is to make their services satisfactory for the customers to increase more benefit.

But when any customer arrive to the hotels then the customer have to wait for waiter to arrive then and ask them for their order, but many the times the waiter is busy with other work or engaged with other customers then the customer who arrived have to wait until any waiter go to them, many times this gives negative effect to the reputation of the hotel.

In this project we are going to propose a bot which automatically go to the customer and ask them for their order from every table and submit customer’s orders for the preparation.

Micro Controller Atmega8

The ATmega8 is a low-power CMOS 8-bit microcontroller based on the AVR RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega8 achieves throughputs approaching 1 MIPS per MHz, allowing the system designer to optimize power consumption versus processing speed.

The device is manufactured using Atmel’s high density non-volatile memory technology. The Flash Program memory can be reprogrammed In-System through an SPI serial interface, by a conventional non-volatile memory programmer, or by an On-chip boot program running on the AVR core. The boot program can use any interface to download the application program in the Application Flash memory.

Pin Configuration:-

L293D MOTR DRIVER IC

Introduction:-

The L293 and L293D are quadruple high-current half-H drivers. The L293 is designed to provide bidirectional drive currents of up to 1 A at voltages from 4.5 V to 36 V. The L293D is designed to provide bidirectional drive currents of up to 600-mA at voltages from 4.5 V to 36 V. Both devices are designed to drive inductive loads such as relays, solenoids, dc and bipolar stepping motors, as well as other high-current/high-voltage loads in positive-supply applications.

L293D is a typical motor driver or motor driver IC which allows DC motor to drive on either direction. L293D is a 16-pin IC which can control a set of two DC motors simultaneously in any direction. It means that you can control two DC motor with a single L293D IC. 

Pin Diagram:-

16×2 LCD DISPLAY

Introduction:-

The HD44780U dot-matrix liquid crystal display controller and driver LSI displays alphanumerics, Japanese kana characters, and symbols. It can be configured to drive a dot-matrix liquid crystal display under the control of a 4- or 8-bit microprocessor. Since all the functions such as display RAM, character generator, and liquid crystal driver, required for driving a dot-matrix liquid crystal display are internally provided on one chip, a minimal system can be interfaced with this controller/driver.

Pin Configuration:

Crystal Oscillator

Introduction:-

A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal of piezoelectric material to create an electrical signal with a precise frequency.

Voltage Regulator IC

Description:-

The KA78XX/KA78XXA series of three-terminal positive regulator are available with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible.

Pin Description:--

DC MOTOR

A geared DC Motor has a gear assembly attached to the motor. The speed of motor is counted in terms of rotations of the shaft per minute and is termed as RPM .

The gear assembly helps in increasing the torque and reducing the speed. Using the correct combination of gears in a gear motor, its speed can be reduced to any desirable figure. This concept where gears reduce the speed of the vehicle but increase its torque is known as gear reduction.

WORKING

In this project we have made a robot which goes to every table. After reaching to the table the customer have to press button to place the order, if the customer will not press start button then the robot will automatically goes to the next table and ask them for the order. If on the next table customer will press the start button then he/she have to place the order by pressing the reference key, for increasing the quantity customer have to press the button many times. After completion of the order the customer have to press the stop button.

After it the robot will go to next table, after completing all the tables the robot will go to reception and submit them the final list of the orders for the preparation of the orders.

BLOCK DIAGRAM

WORKING OF SMART WAITER

ADVANTAGES In comparison with a human being, a robot-waiter is never tired or sick. It does not need salary. It will never insult a customer, neither will it make a mess of an order or orders. It will never be late for work or in low moods. The only thing your robot-waiter will need is regular recharging. The restaurant saves salaries and taxes, cuts the service time of visitors. The visitor economizes on tips. It saves your waiter expenditure. It improves the service time. It creates a wow effect. Your café or restaurant will make itself a name. It will be talked about. People

will make pictures there, post the info in social nets, share their reviews with others creating a favorable image of the venue.

It helps your guests economize 5-20% on tips enabling them spend more in your venue.

FUTURE SCOPE

The robot could be design with the gripper that will pick and place the objects too. For more precision we can use the image processing also that could help to use this robot in many applications.

It moves without lines on the floor or ceiling. Its price is much less than that of the analogues, which cost many thousands of rupees.

CONCLUSION

As we see the robots are increasingly becoming the part of everyday life; the use of ROBOT WAITER can be extend to various functional purposes. We have tried to implement the robot waiter from the existing appliances which could be use by elderly people or disabled people for house service.