zigbeeieee802154網(wǎng)絡(luò)應(yīng)用實(shí)例畢業(yè)論文外文翻譯-wenkub
2023-05-19 18:09:06 本頁面
【正文】 igBeeenabled recess light can be more expensive than a regular recess light, but the installation cost of a ZigBeeenabled light is lower because it requires no additional wiring to a wall switch. Using wireless remotes to control the lights is not a new concept. ZigBee provides the opportunity to implement this concept on a large scale by ensuring long battery life and interoperability of products from various vendors in a reliable and lowcost work. In addition to potential cost savings, ZigBeeenabled lights can have other benefits in a house. For example, the ZigBee devices embedded in the recess lights can act as routers to relay a message across the house, or the lights can be programmed to dim whenever the television set is turned on. The ZigBee light control mechanism has been used for street light controls as well. Multizone HVAC Systems The multizone control system allows a single heating, ventilation, and airconditioning (HVAC) unit to have separate temperature zones in the house. Zoning the HVAC system can help save energy by controlling the flow of air to each room and avoiding cooling or heating unnecessary areas. Figure is a simplified diagram that shows motors controlling air dampers and regulating the flow of air to different zones. ZigBee devices control these motors based on the mands they receive from the main HVAC zone control panel and temperature sensors. An alternative way of implementing a multizone control system is to connect the zone control panel, motors, and temperature sensors via wires instead of a wireless work. A wired syste m has less flexibility and additional labor cost for wiring, but the cost of the parts might be slightly lower. Total system cost and flexibility for future modifications should be the decision factors in selecting between these two implementation methods. Consumer Electronics: Remote Control In consumer electronics, ZigBee can be used in wireless remote controls, game controllers, a wireless mouse for a personal puter, and many other applications. In this section, we briefly review the application of ZigBee in wireless remotes. An infrared (IR) remote controller municates with televisions, DVDs, and other entertainment devices via infrared signals. The limitation of IR remotes is that they provide only oneway munication from the remote to the entertainment device. Also, IR signals do not perate walls and other objects and therefore require line of sight to operate properly. Radio frequency (RF) signals, however, easily perate walls and most objects. IEEE is a proper replacement for IR technology in remote controls because of the low cost and long battery life of ZigBeebased wireless munication. IEEE can be used to create twoway munications between the remote control and the entertainment device. For example, song information or onscreen programming options can be downloaded in to the remote itself, even when the remote control is not in the same room as the entertainment device. Industrial Automation At the industrial level, ZigBee mesh working can help in areas such as energy management, light control, process control, and asset management. In this section, application of ZigBee in asset management and personnel tracking is briefly reviewed. Asset Management and Personnel Tracking Passive radio frequency identification
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