矿井下多波长无线光中继应急通信系统设计

摘要

In order to meet the needs of communication service when there is an accident in the mine, wired or wireless communication ways can be not normally used. Ultraviolet light is easy to access the mobile station because of the strong scattering. Red laser is easy to spread in the tunnel due to it has strong directivity. So we studied the optical wireless communication ways that use both ultraviolet light and red laser by relaying.We designed the software and hardware.Then we did experiments over different distance and various receive angles. The result shows that the part of red laser can communicated successfully in 1 000 meters and ultraviolet light can communicated in 50 meters when the rates keep in 100kbps.In addition,the receive angles of ultraviolet light have achieved 80°.%针对矿井下等特殊场景发生事故,常用有线及无线通信方式无法正常使用时的通信业务需求,提出了多波长无线光中继通信方式.紫外光散射性强,易于移动台接入,红光激光方向性较强,易于在巷道中传播,因而研究了将两种光波长结合进行中继的方式进行通信.经过系统的软硬件设计我们制作了相应的通信试验系统,并进行了不同通信距离和不同接收角度时的通信试验.试验结果表明,当通信速率保持在100 kbps左右时,红光激光部分通信距离可以达到1000 m,紫外光部分可以达到50 m,紫外光部分接受视场角可以达到80度.