Claims:We claim:

1. An electronic coaster, comprising:
at least one weight sensor to:
measure weight of a beverage holder comprising a beverage; and
a computing unit to:
receive the measured weight from the at least one weight sensor;
determine weight of the beverage based on the received weight;
identify beverage type and a predefined calorific value corresponding to the beverage type;
determine change in weight from the weight of the beverage; and
estimate total amount of calories consumed by a user based on the change in weight and the predefined calorific value.

2. The electronic coaster as claimed in claim 1, wherein for every instance of the change in weight from the weight of the beverage, the computing unit is configured to:
receive a subsequent weight from the at least one weight sensor; and
determine change in weight by calculating difference between the subsequent weight and weight measured prior to the subsequent weight to estimate the total amount of calories.

3. The electronic coaster as claimed in claim 2, wherein the total amount of calories is estimated when the subsequent weight is lesser than the weight measured prior to the subsequent weight.

4. The electronic coaster as claimed in claim 1 further comprising at least one imaging sensor to identify the beverage type.

5. The electronic coaster as claimed in claim 1, wherein the weight of the beverage is determined by subtracting weight of the beverage holder from the weight of the beverage holder comprising the beverage.

6. The electronic coaster as claimed in claim 1, wherein the predefined calorific value corresponding to the beverage type is stored in a database accessible by the electronic coaster.

7. The electronic coaster as claimed in claim 1 further comprising at least one biometric sensor to identify the user associated with the electronic coaster.

8. The electronic coaster as claimed in claim 1, further comprising a user interface to:
display information to the user; and
receive one or more inputs from the user.

9. The electronic coaster as claimed in claim 1, wherein the computing unit is further configured to:
compare the amount of calories consumed by the user with a predefined threshold value for calorie consumption; and
notify the user based on the comparison.

10. The electronic coaster as claimed in claim 9, wherein the threshold value for calorie consumption is personalized for the user.

11. A method for estimating calories consumed by a user through a beverage, placed on an electronic coaster, comprising:
measuring, by at least one weight sensor of the electronic coaster, weight of a beverage holder comprising a beverage;
receiving, by a computing unit of the electronic coaster, the measured weight from the at least one weight sensor;
determining, by the computing unit, weight of the beverage based on the received weight;
identifying, by the computing unit, beverage type and a predefined calorific value corresponding to the beverage type;
determining, by the computing unit, change in weight from the weight of the beverage; and
estimating, by the computing unit, total amount of calories consumed by the user based on the change in weight and the predefined calorific value.

12. The method as claimed in claim 10, wherein for every instance of the change in weight from the weight of the beverage, the method comprises:
receiving a subsequent weight from the at least one weight sensor;
determining change in weight by calculating difference between the subsequent weight and weight measured prior to the subsequent weight to estimate the total amount of calories.

13. The method as claimed in claim 12, wherein the total amount of calories is estimated when the subsequent weight is lesser than the weight measured prior to the subsequent weight.

14. The method as claimed in claim 11 further comprising identifying the beverage type by at least one imaging sensor configured in the electronic coaster.

15. The method as claimed in claim 11, wherein the weight of the beverage is determined by subtracting weight of the beverage holder from the weight of the beverage holder comprising the beverage.

16. The method as claimed in claim 11, wherein the predefined calorific value corresponding to the beverage type is stored in a database accessible by the electronic coaster.

17. The method as claimed in claim 11 further comprising identifying the user associated with the electronic coaster, by at least one biometric sensor.

18. The method as claimed in claim 11, further comprising:
displaying, by a user interface configured in the electronic coaster, information to the user; and
receiving by the user interface, one or more inputs from the user.

19. The method as claimed in claim 11, wherein the computing unit is further configured to:
compare the amount of calories consumed by the user with a predefined threshold value for calorie consumption; and
notify the user based on the comparison.

20. The method as claimed in claim 19, wherein the threshold value for calorie consumption is personalized for the user.

Dated this 28th day of January 2016

R Ramya Rao
Of K&S Partners
Agent for the Applicant
, Description:TECHNICAL FIELD
The present disclosure relates to a device and method for estimating amount of calories in a fluid. More specifically, the present disclosure relates to an electronic coaster for estimating calories consumed by a user through a beverage present in a beverage holder placed on the electronic coaster.