| Forest is the important natural resource on the earth which has the role of protecting multiplicity of creature.The existence and development of human beings cannot leave forest resource.In recent years,the fire disaster in the forest is frequent to happen and has large danger.Utilizing the monitoring technology of forest can effectively pre-alarm the fire disaster in the forest and reduce the damage with the maximum.UAVs has the feature of quick flexibility and strong adaptation of environment and there are many applications on the fire disaster of the forest.However,the effective flying time of UAVs is relatively short and it has the advantage of patrolling on the small scope of forest and cannot realize the flying of long distance,which restricts the function of UAVs in the forest and fire monitoring field.Aiming at the problem that existed at present,this essay combines wireless relaying communication network technology with UAVs to monitor the forest and fire,a large area of forest area is divided into several small areas to conduct forest fire zoning monitoring and give full play to the advantages of UAVs.Firstly,this essay introduces the developing progress of pre-alarming and controlling technology home and abroad and clarifies the current situation of research of wireless communication technology in the field of forest and fire monitoring.Through the required analysis of monitoring forest and fire,confirm the whole function framework on the forest and fire monitoring platform,which includes patrolling unit of UAVs,forest and fire detecting unit,wireless relaying communication unit and ground monitoring unit.Then,compared with wireless communication technology,select Lo Ra communication technology to make the wireless relay networks and design the data frame structure and wireless transmission protocol.Utilizing Qt design develops the monitoring ground software of forest and fire for displaying the UAV status and monitoring information of fire condition.Lastly,build up the forest and fire monitoring software and hardware platform of taking STM32 as the main controlling machine and make the adjustment and testing.Through analyzing the result of testing,based on embedded-system forest and fire monitoring platform,apply fully UAVs and wireless relaying network to the monitoring in the field of forest and fire and provide effective monitoring information for ground monitoring unit and make up for insufficiency of small scope of UAVs with certain degree and better application value. |
