| 摘要 |
A wireless data communication system using Zigbee technology is provided to perform data transmission for transmitting data from a sensor, control terminal, and an information providing terminal which perform remote sensing, remote monitoring, remote interception control, and so on, to a center and transmit data from the center to the terminals through a Zigbee method, thereby reducing power consumption and constructing the system at a low cost. A wireless data communication system comprise the followings: plural terminals(12,14,16) which respectively perform at least one of sensing, control, and information providing processes: an access point(100) for performing wireless data communication with the plural terminals(12,14,16) through a Zigbee method; a center(400); and a ZMCG(Zigbee Multi Channel Gateway)(200,200_1~200_n,300,300_1~300_n) which relays a signal between the access point(100) and the center(400) through the Zigbee method, periodically measures the strength of each reception signal with respect to all channels set for communication with an upper side, selects channels having superior signal strength to update the channels as a communication channel, and performs communication through the selected channel. |
