| 摘要 |
The invention relates to a system for controlling the consumption of a medium such as electricity, gas, or water at individual consumption points. A particular quantity for consumption can be allocated to each consumption point in exchange for prepayment. Each consumption point is equipped with a consumption-measuring device (7) for determining the actual consumption of the medium, a controllable blocking device (11) for interrupting the supply of the medium in the event that the allocated quantity for consumption is used up by actual consumption, and a control device (9) for controlling the blocking device (11). Said control device (9) allows the blocking device (11) to adjust to blocking mode if the allocated quantity for consumption is used up by actual consumption and comprises a receiver, especially a radio receiver (13), for receiving an information signal from a transmitting centre (15), said information signal containing information regarding the quantity for consumption allocated to the consumption point (3) concerned. |
