In the fast growing era automation will plays a major roll. In all most all the industries like production, textile, chemical industry automation plays a vital role to reduce the human effort, to increase the production in turn mass production using automation increases the revenue for the industries.
The term automation is applied in each and every field of modern technology. But it was not achieved up to the mark in the field of cooking. There only few machines which will prepare only a particular type of dish in a single machine. The main objective of this invention is to make a device which can cook few Indian Dishes like Biriyani (veg & nori-veg), gravy items etc., automatically.
BACKGROUND OF THE INVENTION:
Chef-O-Matic is a Multi-Cooker Pot Express heats up in half the time of a fan assisted oven and cost 50% less to run. Flash fry an amazing sea food, stir fry or slow cook while you're away, and then come home to meals that are hot and ready to serve. However it all feels very flimsy and lightweight.The handle cannot hold in its place properly. When shaking the basket to move the chips around it fell of the handle. In the end, the chips weren't bad but it took ages for the oil to heat up and to fry. The cooker however is great for casseroles, stews, and curries and also good for rice. The timer, which is used to switch on the unit, is not very accurate and stops with more than five minutes left on it. The thermostat cuts in too frequently so it takes quite a while to heat up. There are already many semi-automatic and rice cookers available in the market as of today but there is no Fully Automated machine for the same.

Our aim is to automate the process of dish making, especially for the famous Indian dish of Biriyani automatically incorporating induction cooker, valve mechanism, stirrer valve for oil flow, water pump mechanism, so that many people who do not know cooking can also relish the food in a safe and healthy manner.
The most effective objective of this work is one that is handmade to the job that isapplied for cooking. It states what kind of career are seeking, and what skills and experiences you have that make human ideal for that career. It provides secured position as cook at one of the state's most excellent and exceptional food service establishments and to contribute culinary expertise in preparing outstanding and commendable dishes to provide customers with a world-class dining experience.

In a scheduled lifestyle we find difficult to prepare our daily needs our self especially office going people and bachelors. So they go with the fast food culture which were found to be harmful at long time basis .
♦ At the first stage, Oil is dropped into the cooker from the electromagnetic valve and allowed to boil for a minute
♦ Then the first servo motor is turned on and the Biriyani masala inside it is allowed into the cooker.
♦♦♦ The. stirrer assembly in the cooker rotates in both clockwise and anticlockwise direction to allow for uniform mixing. This is achieved with the Dual H bridge circuit to allow bipolar polarity.
♦> After suitable time delay the next ingredients, Onion and Garlic paste is fed to the cooker with the help of Servo Motor 2.
♦ This is cooked for 4 minutes and stirred with the DC Geared motor assembly
♦ Then the Tomato Chilli mix is added and stirred for another 4 minutes.
♦ After a short span, the spice mix is added and it is stirred into the cooker
♦ Then depending on the dish being made, either minced Chicken (for Non Veg) or. Paneer (for Veg) is added into the cooker and stirred for 11 minutes.
♦ Then it is mixed with water to allow mixing of the flavours into the dish and left for 10 minutes
♦ Finally rice is added to the dish and cooked for another 15 minutes
♦ It is allowed to turn off by itself using the Auto Shut off feature. Then the top container is removed and the dish is fully cooked.
♦ The Biriyani was tested for taste and found satisfactory in all parameters.
This invention consists of a feeding mechanism powered by individual DC servo motors and controlled by a Micro controller which feeds ingredients one by one with a time controlled algorithm. The ingredients are supplied to the cooking vessel from

feeding pipes on top. Stirrer mechanism is used to stir the ingredients using geared DC motor and Induction stove heats the vessel through induction principle till it is cooked.
DETAILED DESCRIPTION OF INVENTION:
It contains a removable vessel inside an induction heater. Removable vessel is covered by adjusting a lid which forms the base for the ingredient containers. This lid is adjusted to allow for the opening and closing of the valves.
A stirrer mechanism is attached to the lid of the container and is securely held in place with the help of a DC motor. The DC motor also provides power for rotation of the stirrer assembly. To maximize efficiency of the Stirrer assembly, two stirrers are connected in Parallel with the help of a common shaft. The central stirrer mixes the ingredients of the dish while the extreme stirrer is used to scrap the sides of the vessel to allow uniform mixing. They are connected to the DC Geared Motor which has 30kg of torque. This torque is sufficient to drive the stirrer assembly. The extreme stirrer is welded to the shaft connecting to the main stirrer to ensure maximum stability.
The DC Geared motor is connected to the Atmega 328 chip via a driver circuit. The driver circuit is a L298N chip. The Atmega 328 is coded to allow the stirrer to spin in both directions to allow uniform mixing. The average time per direction of spin is 6 seconds. The dual motion direction is achieved with the help of the driver circuit which allows for bi directional polarity in the DC motor. The Atmega 328 is controlled by a kill switch connected to 12Amps. The fixed value is connected to the wall plug and the removable vessel can be taken out. Also present on the lid are provisions for Stainless steel pipes and two other smaller pipes. The size of these steel pipes is 4 centimeter in diameter. They allow for the opening and closing of valves.
The valves are powered by 5v 2kg servo motors. Six of these motors are connected to the atmega 328 chip and use variable time delay program to individually open and close the valve for feeding the ingredients to the vessel.

A Wooden scoop plate is used as a stirrer which is placed exactly in the centre of a steel lid of the induction heater which is coupled with the motor. It is connected to the motor with the help of a steel rod arrangement.
The second stirrer is connected in parallel to the first with the help of a connector rod. The dimension of the stirrer spoon is 5cm in length and 4 cm in width. The operation of the stirrer depends on the type of dish being prepared. The programming of the stirrer allows for operation of 6 seconds in clockwise direction followed by a 3 second delay, after which the stirrer rotates in anti clockwise direction. This is done to allow for uniform mixing in the vessel.
Nearly all types of DC motors have some internal mechanism, either electromechanical or electronic, to periodically change the direction of current flow in part of the motor. Most types produce DC motors were the first type widely used, since they could be powered from existing direct-current lighting power distribution systems.
A servomotor is a closed-loop servomechanism that uses position feedback to control its motion and final position. The input to its control is some signal, either analogue or digital, representing the position commanded for the output shaft.
BRIEF DESCRIPTION OF DRAWING:
Figure 1 shows the block diagram of the induction cooker and explains the concept of automated Dish Making machine.
Figure 2 shows the stirring mechanism carried out in the proposed model.
Figure 3 shows the physical dimensions of servo motors used in this project.

A servomotor 1 is a rotary actuator or linear actuator that allows for precise control of angular or linear position, velocity and acceleration. It consists of a suitable motor coupled to a sensor for position feedback.To maximize efficiency of the Stirrer assembly, two stirrers are connected in Parallel with the help of a common shaft. The central stirrer mixes the ingredients of the dish while the extreme stirrer is used to scrap the sides of the vessel to allow uniform mixing. They are connected to the DC Geared Motor 2 which has 30kg of torque. This torque is sufficient to drive the stirrer assembly.
The DC Geared motor is connected to the Atmega 328 chip 4 via a driver circuit. The driver circuit is a L298N chip 3. The Atmega 328 is coded to allow the stirrer to spin in both directions to allow uniform mixing.The lid are provisions for Stainless steel pipes and two other smaller pipes. The size of these steel pipes is 4 centimeter in diameter. They allow for the opening and closing of valves. The valves are powered by 5v 2kg servo motors 1. According to the number of stainless steel pipes number of servo motors are provided.
Six of these motors are connected to the Atmega 328 chip and use variable time delay program to individually open and close the valve for feeding the ingredients to the vessel.
The water intake is done using a water pump 5 which is immersed inside water in a separate container by the side.
Solenoid Valves 6 can also be controlled by actuators attached to the stem. Relays 7 control power circuits with no moving parts, instead using a semiconductor device to perform switching.A Wooden scoop plate l(Fig.2) is used as a stirrer which is placed exactly in the center of a steel lid of the induction heater which is coupled with the motor.
The wooden scoop plate is connected to the motor with the help of a steel rod 2 arrangement. The length of the rod is 5cm. In order to maximize efficiency of the stirrer assembly, two stirrers are connected in parallel to the motor.