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An apparatus and method for managing a liquid volume in a container includes a detector for detecting liquid volume changes in the container during a first preset period, a first determiner for determining whether the changes are lower than the first preset threshold value, and a presenter for prese

An apparatus and method for managing a liquid volume in a container includes a detector for detecting liquid volume changes in the container during a first preset period, a first determiner for determining whether the changes are lower than the first preset threshold value, and a presenter for presenting the first prompt information in case the changes are lower than the preset threshold value.

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1. An apparatus for managing liquid volume of a liquid in a container, comprising: a detector configured to detect liquid volume changes in said container during a first preset period of time;a first determiner configured to determine whether said changes are lower than a first preset threshold valu

1. An apparatus for managing liquid volume of a liquid in a container, comprising: a detector configured to detect liquid volume changes in said container during a first preset period of time;a first determiner configured to determine whether said changes are lower than a first preset threshold value; anda presenter configured to present first prompt information in response to said changes being lower than said first preset threshold value,wherein said detector comprises: a single near-IR light source configured to emit near-IR light;a plurality of near-IR sensors configured to detect intensities of the near-IR light emitted by said single near-IR light source, wherein said single near-IR light source and said plurality of near-IR sensors are arranged at a first sidewall of said container; anda reflector arranged on a second sidewall of said container opposite to said first sidewall and configured to reflect the near-IR light emitted by said single near-IR light source towards said plurality of near-IR sensors, andwherein the plurality of near-IR sensors detect the near-IR light emitted from the single near-IR light source. 2. The apparatus according to claim 1, wherein said detector further comprises: a weight sensor configured to measure liquid weight in said container; anda second determiner configured to determine said liquid volume changes during said first preset period of time according to the weight measured by said weight sensor. 3. The apparatus according to claim 1, wherein said detector further comprises: a pressure sensor configured to measure pressure produced by said liquid in said container; anda third determiner configured to determine said liquid volume changes during said first preset period of time according to the pressure measured by said pressure sensor. 4. The apparatus according to claim 3, wherein said detector further comprises: an inclination sensor configured to measure inclination angle of said container; and whereinsaid third determiner is further configured to determine said liquid volume changes during said first preset period of time according to the inclination angle measured by said inclination sensor and the pressure measured by said pressure sensor. 5. The apparatus according to claim 1, wherein said plurality of near-IR sensors is respectively arranged at the first sidewall of the container at different heights; and wherein said first determiner is further configured to determine liquid level of said liquid and thereby determine said liquid volume changes during said first preset period of time based on the intensities of near-IR light detected by said plurality of near-IR sensors. 6. The apparatus according to claim 5, wherein said detector further comprises a light-guide configured to extract the near-IR light emitted by said single near-IR light source, so that said plurality of near-IR sensors detects the near-IR light emitted through the light-guide by said single near-IR light source. 7. The apparatus according to claim 1, further comprising: an accelerometer configured to measure acceleration of said container;wherein said presenter is further configured to present a second prompt information if no acceleration of said container is detected by said accelerometer during a second preset period of time. 8. The apparatus according to claim 7, wherein said accelerometer is further configured to measure a first inclination angle between said container and a horizontal plane or a second inclination angle between said container and a vertical direction; and said detector is further configured to detect said liquid volume changes if said first inclination angle is higher than a second preset threshold value or said second inclination angle is lower than a third preset threshold value. 9. The apparatus according to claim 1, wherein the presenter is configured to present the first prompt information by playing a tune through a loudspeaker. 10. A cup having an apparatus for managing liquid volume of a liquid in the cup, the apparatus comprising: a detector configured to detect liquid volume changes in said container during a first preset period of time;a determiner configured to determine whether said changes are lower than a first preset threshold value; anda presenter configured to present first prompt information in response to said changes being lower than said first preset threshold value,wherein said detector comprises:a single near-IR light source configured to emit near-IR light;a plurality of near-IR sensors configured to detect intensities of the near-IR light emitted by said single near-IR light source, wherein said single near-IR light source and said plurality of near-IR sensors are arranged at a first sidewall of said container; anda reflector arranged on a second sidewall of said container opposite to said first sidewall and configured to reflect the near-IR light emitted by said single near-IR light source towards said plurality of near-IR sensors, andwherein the plurality of near-IR sensors detect the near-IR light emitted from the single near-IR light source. 11. The cup of claim 10, wherein the determiner is further configured to determine liquid level of the liquid and thereby determine the liquid volume changes during the first preset period of time based on the intensities of near-IR light detected by the plurality of near-IR sensors. 12. A method of managing liquid volume of a liquid in a container, comprising acts of: detecting liquid volume changes in said container during a first preset period of time;determining whether said changes are lower than a first preset threshold value; andpresenting first prompt information if said changes are lower than the a first preset threshold value,wherein the detecting act comprises acts of:reflecting near-IR light emitted by a single near-IR light source and reflected by a reflector arranged on a sidewall of said container;detecting by a plurality of near-IR sensors the near-IR light reflected by the reflector; anddetermining said liquid volume changes by detecting changes in intensities of the near-IR light detected by said plurality of near-IR sensors,wherein the plurality of near-IR sensors detect the near-IR light emitted from the single near-IR light source. 13. The method according to claim 12, wherein said detecting act comprising an act of: determining said liquid volume changes by detecting changes of weight of said liquid, changes of pressure of said liquid or changes of liquid level of said liquid during said first preset period of time. 14. The method according to claim 12, further comprising following acts which are performed before said act of detecting liquid volume changes: detecting acceleration of said container; andpresenting second prompt information if no acceleration of said container is detected during a second preset period of time. 15. The method according to claim 12, wherein the presenting act comprises an act of playing a tune through a loudspeaker. 16. An apparatus for managing liquid volume of a liquid in a container, comprising: a detector configured to detect liquid volume changes in the container during a first preset period of time;a determiner configured to determine whether the changes are lower than a first preset threshold value; anda presenter configured to present first prompt information in response to the changes being lower than the first preset threshold value,wherein the detector comprises:a single near-IR light source configured to emit near-IR light and located at a first sidewall of the container;a plurality of near-IR sensors configured to detect intensities of the near-IR light emitted by the single near-IR light source, wherein the plurality of near-IR sensors are arranged at a second sidewall of the container opposite the first sidewall; anda light-guide coupled to the single near-IR light source and configured to extract the near-IR light emitted by the single near-IR light source for detection by the plurality of near-IR sensors,wherein the plurality of near-IR sensors detect the near-IR light emitted from the single near-IR light source, andwherein the light-guide is a light guiding plate located along the first sidewall of the container for emitting light towards the plurality of near-IR sensors. 17. The apparatus of claim 16, wherein the determiner is further configured to determine liquid level of the liquid and thereby determine the liquid volume changes during the first preset period of time based on the intensities of near-IR light detected by the plurality of near-IR sensors. 18. The apparatus of claim 16, wherein the plurality of near-IR sensors are respectively arranged at the second sidewall of the container at different heights, and wherein each respective near-IR sensor of the plurality of near-IR sensors is configured to detect light from the light-guide emitted at a same height as the height of the respective near-IR sensor. 19. The apparatus of claim 16, wherein the single near-IR light source and at least one sensor of the plurality of near-IR sensors are arranged at the first sidewall of the container, and wherein the detector further comprises a reflector arranged at the second sidewall of the container opposite to the first sidewall and configured to reflect the near-IR light emitted by the single near-IR light source towards the plurality of near-IR sensors. 20. The apparatus of claim 16, wherein the single near-IR light source comprises a plurality of separate light-emitting elements, and wherein each of the plurality of separate light-emitting elements respectively corresponds to each of the plurality of near-IR sensors and is arranged at a same height with its corresponding near-IR sensor. 21. The apparatus of claim 16, wherein the presenter is configured to present the first prompt information by playing a tune through a loudspeaker.