Method and an apparatus for indirect measurement of fluid in a container and communication thereof

An apparatus for determining fluid intake by a user from a fluid container containing liquid, comprising:

• an accelerometer for generating acceleration data based on movement of the fluid container;
• a microprocessor for processing the acceleration data and for computing a tilt angle of the fluid container based on the acceleration data;
• a user interface module for receiving personal information and physical characteristics of the fluid container from the user and for outputting data to the user;
• a classification module for classifying the acceleration data from the accelerometer into drinking and non-drinking events;
• an estimator module for determining an amount of fluid reduction from the fluid container based on the classified acceleration data from the classification module and the physical characteristics of the fluid container;
• and
• a water baserate calculation and optimization module for computing a baserate of hydration of the user based on the personal information received from the user interface and comparing the baserate with the amount of fluid reduction determined by the estimator module.