A smart dining
system (100) is disclosed for automatically tracking nutritional intake during buffet-style or self-service dining. The
system includes one or more smart serving trays (102) equipped with a weight sensor (104), a
processing unit (150), a memory (120) storing
nutritional information, and a
wireless transmitter (152). When a user removes a portion of food, the tray (102) detects a reduction in weight and determines a corresponding nutritional value. This nutritional value is communicated in real time to a smart plate (110) or
user device (160) having a
wireless receiver (162), an electronic display (112, 164), and a
processing arrangement (166) that updates both per-portion and cumulative nutritional totals. Optional components include a tray identifier (170), a refill
detector (174), an indicator element (176), and a smart serving utensil (130) having a utensil-mounted weight sensor (132), plate identification sensor (134), and
wireless transmitter (136). A backend
dashboard (122) may remotely manage nutritional parameters and log consumption data (184). The
system enables seamless, accurate, real-time nutritional tracking without requiring manual input, plate weighing, or interruption to the user's natural serving behavior.