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A system that includes a container containing a fluid, a fluid line coupled with the container, and a pump configured to pump the fluid out of the container through the fluid line. The system further includes a sensor that includes a wireless transmitter. The sensor is configured to sense the pressu

A system that includes a container containing a fluid, a fluid line coupled with the container, and a pump configured to pump the fluid out of the container through the fluid line. The system further includes a sensor that includes a wireless transmitter. The sensor is configured to sense the pressure in the fluid line and to periodically transmit, using the wireless transmitter, an alarm message when the pressure reaches an alarm threshold.

대표청구항 ▼

What is claimed is: 1. A system, comprising: a container containing a fluid; a fluid line coupled with the container; a pump configured to pump the fluid out of the container through the fluid line; a sensor comprising a wireless transmitter, the sensor configured to sense a pressure in the flui

What is claimed is: 1. A system, comprising: a container containing a fluid; a fluid line coupled with the container; a pump configured to pump the fluid out of the container through the fluid line; a sensor comprising a wireless transmitter, the sensor configured to sense a pressure in the fluid line and to periodically transmit, using the wireless transmitter, an alarm message when the pressure reaches an alarm threshold; and a control unit comprising a wireless receiver, the control unit configured to receive the alarm message, using the wireless receiver, and to output an alarm indication in response to the alarm message. 2. The system of claim 1, wherein the control unit further comprises a display, and wherein the alarm indication comprises at least in part displaying a message on the display. 3. The system of claim 1, wherein the control unit further comprises a visual indicator, and wherein the alarm indication comprises at least in part activating the visual indicator. 4. The system of claim 3, wherein the visual indicator is an LED or a LCD. 5. The system of claim 1, wherein the control unit further comprises an audio output, and wherein the alarm indication comprises at least in part activating the audio output. 6. The system of claim 5, wherein the control unit is portable. 7. The system of claim 1, wherein the pump pumps the fluid out of the container by reducing the pressure in the fluid line, and wherein the sensor transmits the alarm message when the pressure drops below the alarm threshold. 8. The system of claim 1, wherein the sensor is configured to stop transmitting the alarm message when the pressure returns to a normal operation range. 9. A system, comprising: a container containing a fluid; a fluid line coupled with the container; a pump configured to pump the fluid out of the container through the fluid line; a sensor comprising a wireless transmitter, the sensor configured to sense a pressure in the fluid line and to periodically transmit status information relating to the pressure in the fluid line using the wireless transmitter; and a control unit comprising a wireless receiver, the control unit configured to: receive the status information using the wireless receiver; determine when the container is empty based at least in part on the status information; and determine when the container is replaced or refilled based at least in part on the status information. 10. The system of claim 9, wherein the control unit is also configured to determine how long it took to replace or refill the container. 11. The system of claim 9, wherein the control unit further comprises: a network interface communicatively coupled to a communication network; and a transmitter configured to transmit the status information and/or information related to the status information through the network interface. 12. The system of claim 11, further comprising a data processing center interfaced to the communication network, the data processing center configured to receive and process the status information and/or the information related to the status information. 13. The system of claim 9, wherein the sensor is configured to periodically transmit a status message when the pressure in the fluid line is in a normal operation range. 14. The system of claim 9, wherein the sensor is configured to periodically transmit an alarm message when the pressure in the fluid line reaches an alarm threshold. 15. The system of claim 14, wherein the control unit further comprises an alarm output, and wherein the control unit is configured to generate an alarm indication when the control unit receives an alarm message from the sensor. 16. A system, comprising: a container containing a fluid; a fluid line coupled with the container; a pump configured to pump the fluid out of the container through the fluid line; a sensor comprising a wireless transmitter, the sensor configured to sense a pressure in the fluid line and to periodically transmit status information relating to the pressure in the fluid line using the wireless transmitter; and a control unit comprising: a wireless receiver, the control unit configured to receive the status information using the wireless receiver; a network interface communicatively coupled to a communication network; and a transmitter configured to transmit the status information and/or information related to the status information through the network interface; and a data processing center communicatively coupled to the communication network, the data processing center configured to: determine when the container is empty based at least in part on the status information and/or information related to the status information; determine when the container is replaced or refilled based at least in part on the status information and/or information related to the status information; and determine how long it took to replace or refill the container. 17. The system of claim 16, wherein the data processing center is configured to store and/or track the status information and/or information related to when the container is empty, when the container is replaced or refilled, and how long it took to replace or refill the container. 18. The system of claim 17, wherein the data processing center is configured to generate a report based on the stored and/or tracked information. 19. A method of monitoring the status of fluid in a container, comprising: pumping the fluid out of the container through a fluid line; sensing the pressure in the fluid line; transmitting an alarm message indicating that the container is empty when the pressure in the fluid line reaches an alarm threshold; transmitting a message when the pressure returns to a normal operation range indicating the container has been replaced or refilled. 20. The method of claim 19, further comprising determining how long it took to replace or refill the container. 21. A system, comprising: a means for containing a fluid; a fluid line coupled with the means for containing a fluid; a pressure reducing means for reducing the pressure in the fluid line and causing the fluid to be pumped out of the means for containing the fluid through the fluid line; a sensing means, including a wireless transmitting means, for sensing a pressure in the fluid line and periodically transmitting, using the wireless transmitting means, status information relating to the pressure in the fluid line; and a controlling means, including a wireless receiving means, for receiving the status information, using the wireless receiving means, and to output an alarm indication when the status information indicates that the pressure in the fluid line has reached an alarm threshold. 22. The system of claim 21, wherein the controlling means is further used for: determining when the means for containing the fluid is empty based at least in part on the status information; and determine when the means for containing the fluid is replaced or refilled based at least in part on the status information. 23. The system of claim 22, wherein the controlling means is further used for determining how long it took to replace or refill the means for containing the fluid. 24. The system of claim 21, wherein the controlling means further comprises: a network interface communicatively coupled to a communication network; and a transmitting means configured to transmit the status information and/or information related to the status information through the network interface; and wherein the system further comprises a data processing means communicatively coupled to the communication network, the data processing means used for: determining when the means for containing the fluid is empty based at least in part on the status information and/or information related to the status information; determining when the means for containing the fluid is replaced or refilled based at least in part on the status information and/or information related to the status information; and determining how long it took to replace or refill the means for containing the fluid. 25. A soda fountain, comprising: a syrup bag containing a syrup used to make a beverage; a syrup line coupled with the syrup bag; a pump configured to pump the syrup out of the syrup bag through the syrup line; a sensor comprising a wireless transmitter, the sensor configured to sense a pressure in the syrup line and to periodically transmit, using the wireless transmitter, an alarm message when the pressure drops below an alarm threshold indicating that the syrup bag is empty; and a control unit comprising a wireless receiver, the control unit configured to receive the alarm message, using the wireless receiver, and to output an alarm indication in response to the alarm message. 26. The system of claim 25, wherein the sensor is configured to stop transmitting the alarm message when the pressure rises to a normal operation range indicating the syrup bag has been replaced or refilled. 27. A system, comprising: a plurality of containers each containing a fluid; a plurality of fluid lines, each of the plurality of fluid lines coupled to one of the plurality of containers; a plurality of pumps, each of the plurality of pumps coupled with one of the fluid lines and configured to pump the fluid out of the container through the associated fluid lines; a plurality of sensors each comprising a communication interface configured to couple the sensor to a communication network, each of the plurality of sensors configured to; couple with one of the plurality of fluid lines; sense a pressure in the fluid line; and communicate information related to the pressure in the fluid line through the communication interface; a wireless transmit unit comprising a wireless transmitter and a communication interface configured to interface the wireless transmit unit to the communication network, the wireless transmit unit configured to receive the information related to the pressure in the fluid lines from the plurality of sensors and to transmit the received information via the wireless transmitter; and a control unit comprising a wireless receiver, the control unit configured to receive, using the wireless receiver, the information related to the pressure in the fluid lines transmitted by the wireless transmit unit. 28. The system of claim 27, wherein the control unit is configured to determine when a particular container is empty based at least in part on the information received from the wireless transmit unit; and generate an alarm indication indicating which container is empty. 29. The system of claim 28, wherein the control unit is configured to determine when the container indicated in the alarm indication is replaced or refilled based at least in part on information received from the wireless transmit unit. 30. The system of claim 27, wherein the control unit further comprises: a network interface communicatively coupled to a communication network; and a transmitter configured to transmit the information received from the wireless transmit unit through the network interface. 31. The system of claim 30, further comprising a data processing center interfaced to the communication network, the data processing center configured to receive and process the information transmitted through the network interface by the control unit.