| 摘要 |
<p>An energy management system has several energy nodes 9. Each node controls the electrical power supply to a device. It may use a relay or a solid state switch, such as a triac. It may also contain a meter to measure the power supplied to the device. The system also contains an energy automation appliance, which controls the nodes according to an energy policy. The appliance may be a computer and may communicate with the nodes via an Ethernet network. Computers 17, which have their power controlled by nodes, may have a status module 19 and a shutdown module 15. The status module informs the appliance of the status of the computer. The shutdown module allows the appliance to shut down the computer. A policy override device 21 may allow a user to override the energy policy. A web server 13 may be used to interface to the automation appliance.</p> |
