短距视频信号无线通信网络的设计与实现

Design and Implementation of Communication Network Video Signal with Short-distance Wireless

设计了一种短距视频信号无线通信网络,该系统由视频信号发射节点B、视频信号发射与中继节点C、视频信号接收终端节点A、控制与显示四部分组成.B、C节点采用低功耗设计,在单片机的控制下,可分别实现B、C节点到A节点的单向叠加字符视频通信,亦可实现对A节点同时进行C节点本机及中继转发通信功能.系统测试结果表明:在保证图像质量的前提下,节点间通信距离可达5m;在中继方式下,B节点至A节点通信距离可达到10m;B、C节点在叠加字符时总功耗小于150m W.

The communication network video signal with short-distance wireless is designed,and the system is composed of a video signal transmitting node B,video signal transmitting and relaying node C,the video signal receiving terminal node A,control and display of four parts.B and C nodes are designed with low power consumption.Under the control of single chip microcomputer,they can realize one-way overlay character video communication from B to C nodes to the A nodes.At the same time,the A nodes can also carry out the C node local and relay forwarding functions simultaneously.System test results:under the premise of guaranteeing the image quality,the communication distance between nodes can reach 5m.The communication distance from B node to A node can reach 10 meters in relay mode,and the total power consumption of B and C nodes is less than 150mW when superimposed characters.