| 摘要 |
A coffee quality monitoring system 10 comprises a coffee flow monitor 14 adapted to record the flow of coffee through a flow meter 22 of the coffee machine 12, and a water filter usage monitor 16 which records the flow of water through a flow meter 28 following the machine's water filter 30. Each monitor 14, 16 comprises an active RFID tag incorporating an electrical pulse sensor. The data recorded by the coffee and water flow monitors 14, 16 is processed by local data storage and processing means 18 to determine the flow time of each flow of coffee and the flow volume of each flow of water. Flow times and flow volumes are transmitted periodically to a remote data storage and processing means 20 where they are compared to stored acceptable values of flow time and flow volume, and which transmits an alert message if a flow time and flow volume falls outside the acceptable range of values, indicating a reduction of coffee quality. The system may also monitor temperatures and coffee grinder blade usage. |
