仿真Demo - D435i视觉避障
效果展示
提示
运行Demo前请将该模块编译编译代码如下:
cd ~/Prometheus catkin_make --source Modules/ego_planner_swarm --build build/ego_planner_swarm
仿真脚本启动流程
-
将FS-i6s遥控器开机并通过USB接口接入电脑
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输入以下命令启动D435i 集群避障仿真demo
cd ~/Prometheus/Scripts/simulation/ego_planner/
# 第一次启动该脚本时,需要添加可执行权限
chmod +x ego_planner_p450_d435i_depth_swarm.sh
./ego_planner_p450_d435i_depth_swarm.sh
检查终端运行是否正常
- ROS主节点 - 下图所示为正常运行
- PX4 仿真 - 下图所示为正常运行
- Prometheus控制 - 下图所示为正常运行
- Ego-swarm 集群规划避障 - 下图所示为正常运行
开始仿真
- 等待rviz显示三台无人机
- 将遥控器SWA向下拨动以解锁无人机
- 遥控器SWB档杆拨到中间位置将无人机控制状态切换到 RC_POS_CONTROL
- 遥控器SWB档杆拨到最底部将无人机控制状态切换到 COMMAND_CONTROL
- 等待三台无人机都起飞到指定高度后,鼠标左键点击rviz里的3D Nav Goal,然后在rviz界面点击鼠标左键选择目标点,同时按住鼠标右键往上拖动
3D Nav Goal 位置如上图所示
注意
如果不按住鼠标左键,在画面内向上划,提供Z的高度,那么Z的高度默认为0,则会出现到达不了目标点的情况!
- 当飞机到达目标点后可再次选择目标点进行规划
节点运行图
ego-swarm仿真demo主要包含: /gazebo 、/motion_goal_swarm 、/uav1_ego_planner_node 、/uav2_ego_planner_node 、/uav3_ego_planner_node 、/uav1_traj_server_forprometheus 、/uav2_traj_server_forprometheus 、/uav3_traj_server_forprometheus 、/joy_node 、/uav_control_main_1 、/uav_control_main_2 、/uav_control_main_3 、/uav1_mavros 、/uav2_mavros 、/uav3_mavros等节点。
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/gazebo 节点为gazebo ROS驱动节点,为ego-swarm提供深度点云数据,来进行建图
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/motion_goal_swarm 节点为rviz指点节点,为每台无人机提供规划的目标点
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/uav1_ego_planner_node 节点为ego-swarm的规划节点,根据输入的深度点云数据建立膨胀地图,并规划出可行路径,输出/broadcast_bspline话题到/uav2_ego_planner_node、/uav3_ego_planner_node节点,这两个节点根据1号无人机的轨迹再生成安全的轨迹,避免与1号无人机发生碰撞。同时输出/uav1/planning/bspline话题,将B样条曲线给到/uav1_traj_server_for_prometheus节点
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/uav1_traj_server_for_prometheus 节点为轨迹生成节点,根据B样条(bspline)生成一系列轨迹点,然后转化为/uav1/prometheus/command话题控制1号无人机飞行
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/uav2_ego_planner_node 节点为ego-swarm的规划节点,根据输入的深度点云数据建立膨胀地图,并规划出可行路径,输出/broadcast_bspline话题到/uav2_ego_planner_node、/uav1_ego_planner_node节点,这两个节点根据2号无人机的轨迹再生成安全的轨迹,避免与2号无人机发生碰撞。同时输出/uav2/planning/bspline话题,将B样条曲线给到/uav2_traj_server_for_prometheus节点
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/uav2_traj_server_for_prometheus 节点为轨迹生成节点,根据B样条(bspline)生成一系列轨迹点,然后转化为/uav2/prometheus/command话题控制2号无人机飞行
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/uav3_ego_planner_node 节点为ego-swarm的规划节点,根据输入的深度点云数据建立膨胀地图,并规划出可行路径,输出/broadcast_bspline话题到/uav1_ego_planner_node、/uav2_ego_planner_node节点,这两个节点根据3号无人机的轨迹再生成安全的轨迹,避免与3号无人机发生碰撞。同时输出/uav3/planning/bspline话题,将B样条曲线给到/uav3_traj_server_for_prometheus节点
-
/uav3_traj_server_for_prometheus 节点为轨迹生成节点,根据B样条(bspline)生成一系列轨迹点,然后转化为/uav3/prometheus/command话题控制2号无人机飞行
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/joy_node 节点为遥控器ROS驱动节点,用以获取遥控器数据,将遥控器数据传输给/uav_control_main_1、/uav_control_main_2、/uav_control_main_3节点。
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/uav1/mavros 节点为飞控ROS驱动节点,与飞控进行数据交互。在仿真中,该驱动节点与模拟飞控进行数据交互。
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/uav2/mavros 节点为飞控ROS驱动节点,与飞控进行数据交互。在仿真中,该驱动节点与模拟飞控进行数据交互。
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/uav3/mavros 节点为飞控ROS驱动节点,与飞控进行数据交互。在仿真中,该驱动节点与模拟飞控进行数据交互。
从节点运行图中,我们可以看到有如下的数据话题
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/uav*/prometheus/command: 无人机控制接口,对应的消息为prometheus_msgs/UAVCommand
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/uav*/prometheus/state: 无人机状态,对应的消息为prometheus_msgs/UAVState
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/uav*/prometheus/fake_rc_in: 仿真模拟PX4遥控器数据
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/uav*/camera/depth/image_raw: 深度点云话题输入
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/broadcast_bspline: 广播的B样条
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/uav*/planning/bspline: 发布的B样条
代码讲解
脚本位于~/Prometheus/Scripts/simulation/ego_planner/ego_planner_p450_d435i_depth_swarm.sh,内容如下:
# 脚本描述:
gnome-terminal --window -e 'bash -c "roscore; exec bash"' \
--tab -e 'bash -c "sleep 3; roslaunch prometheus_gazebo sitl_p450_d435i_swarm.launch ; exec bash"' \
--tab -e 'bash -c "sleep 4; roslaunch prometheus_uav_control uav_control_main_intdoor_swarm.launch ; exec bash"' \
--tab -e 'bash -c "sleep 6; roslaunch ego_planner sitl_ego_planner_basic_octomap_d435i_swarm_depth.launch; exec bash"' \
除了运行ros必备启动的roscore,脚本依次运行了三个launch文件 1、sitl_p450_d435i_swarm.launch
2、uav_control_main_intdoor_swarm.launch
3、sitl_ego_planner_basic_octomap_d435i_swarm_depth.launch
依次查看
1、sitl_p450_d435i_swarm.launch
<launch>
<!-- Gazebo configs -->
<arg name="gazebo_enable" default="true"/>
<arg name="world" default="$(find prometheus_gazebo)/gazebo_worlds/planning_worlds/planning_easy_swarm.world"/>
<!-- 启动Gazebo -->
<group if="$(arg gazebo_enable)">
<include file="$(find gazebo_ros)/launch/empty_world.launch">
<arg name="world_name" value="$(arg world)"/>
<!-- 设置为false,使用系统时间 -->
<arg name="use_sim_time" value="true"/>
<arg name="gui" value="true"/>
</include>
</group>
<!-- Rviz config -->
<arg name="rviz_enable" default="true"/>
<arg name="rivz_config" default="$(find prometheus_gazebo)/launch_uav_with_sensor/visual_mapping_swarm.rviz"/>
<!-- 启动Rviz-->
<group if="$(arg rviz_enable)">
<node type="rviz" name="rviz" pkg="rviz" args="-d $(arg rivz_config)"/>
</group>
<arg name="vehicle" default="p450_D435i"/>
<!--无人机编号-->
<arg name="uav1_id" default="1"/>
<arg name="uav2_id" default="2"/>
<arg name="uav3_id" default="3"/>
<!-- 无人机初始位置 -->
<!--arg name="uav1_init_x" default="-6"/>
<arg name="uav1_init_y" default="2.5"/>
<arg name="uav1_init_yaw" default="0.0"/>
<arg name="uav2_init_x" default="-6"/>
<arg name="uav2_init_y" default="0.5"/>
<arg name="uav2_init_yaw" default="0.0"/>
<arg name="uav3_init_x" default="-6"/>
<arg name="uav3_init_y" default="-2.5"/>
<arg name="uav3_init_yaw" default="0.0"/>
<arg name="uav4_init_x" default="-6"/>
<arg name="uav4_init_y" default="-5"/>
<arg name="uav4_init_yaw" default="0.0"/-->
<arg name="uav1_init_x" default="0"/>
<arg name="uav1_init_y" default="1"/>
<arg name="uav1_init_yaw" default="0.0"/>
<arg name="uav2_init_x" default="0"/>
<arg name="uav2_init_y" default="0"/>
<arg name="uav2_init_yaw" default="0.0"/>
<arg name="uav3_init_x" default="0"/>
<arg name="uav3_init_y" default="-1"/>
<arg name="uav3_init_yaw" default="0.0"/>
<!-- 1号无人机 -->
<include file="$(find prometheus_gazebo)/launch_basic/sitl_px4_indoor.launch">
<arg name="uav_id" value="$(arg uav1_id)"/>
<arg name="vehicle" value="$(arg vehicle)"/>
<arg name="uav_init_x" value="$(arg uav1_init_x)"/>
<arg name="uav_init_y" value="$(arg uav1_init_y)"/>
<arg name="uav_init_z" value="0.15"/>
<arg name="uav_init_yaw" value="$(arg uav1_init_yaw)"/>
</include>
<!-- 2号无人机 -->
<include file="$(find prometheus_gazebo)/launch_basic/sitl_px4_indoor.launch">
<arg name="uav_id" value="$(arg uav2_id)"/>
<arg name="vehicle" value="$(arg vehicle)"/>
<arg name="uav_init_x" value="$(arg uav2_init_x)"/>
<arg name="uav_init_y" value="$(arg uav2_init_y)"/>
<arg name="uav_init_z" value="0.15"/>
<arg name="uav_init_yaw" value="$(arg uav2_init_yaw)"/>
</include>
<!-- 3号无人机 -->
<include file="$(find prometheus_gazebo)/launch_basic/sitl_px4_indoor.launch">
<arg name="uav_id" value="$(arg uav3_id)"/>
<arg name="vehicle" value="$(arg vehicle)"/>
<arg name="uav_init_x" value="$(arg uav3_init_x)"/>
<arg name="uav_init_y" value="$(arg uav3_init_y)"/>
<arg name="uav_init_z" value="0.15"/>
<arg name="uav_init_yaw" value="$(arg uav3_init_yaw)"/>
</include>
<!-- TF for world and map-->
<!-- 如果模型中使用了D435i,将下列TF转换打开 -->
<node pkg="tf" type="static_transform_publisher" name="tf_camera_d435i_$(arg uav1_id)"
args="0 0 0 0 0 0 /uav$(arg uav1_id)/camera_link /uav$(arg uav1_id)/d435i_link 100"/>
<node pkg="tf" type="static_transform_publisher" name="tf_camera_d435i_$(arg uav2_id)"
args="0 0 0 0 0 0 /uav$(arg uav2_id)/camera_link /uav$(arg uav2_id)/d435i_link 100"/>
<node pkg="tf" type="static_transform_publisher" name="tf_camera_d435i_$(arg uav3_id)"
args="0 0 0 0 0 0 /uav$(arg uav3_id)/camera_link /uav$(arg uav3_id)/d435i_link 100"/>
</launch>
上面launch文件用于启动prometheus_gazebo下gazebo环境,带有仿真D435i的无人机模型,以及rviz显示。
2、uav_control_main_intdoor_swarm.launch
<launch>
<arg name="uav1_id" default="1"/>
<arg name="uav2_id" default="2"/>
<arg name="uav3_id" default="3"/>
<arg name="sim_mode" default="true"/>
<arg name="flag_printf" default="true"/>
<!-- 如果是matlab配置为ATT_CTRL_MODE,则此处要设置为True-->
<arg name="control/enable_external_control" default="false"/>
<arg name="launch_prefix" default="" />
<arg name="agent_num" default="3"/>
<!-- 启动uav_control_main -->
<!-- 1号飞机 -->
<node pkg="prometheus_uav_control" type="uav_control_main" name="uav_control_main_$(arg uav1_id)" output="screen">
<param name="uav_id" value="$(arg uav1_id)" />
<param name="sim_mode" value="$(arg sim_mode)" />
<param name="flag_printf" value="$(arg flag_printf)" />
<param name="control/enable_external_control" value="$(arg control/enable_external_control)" />
<rosparam command="load" file="$(find prometheus_uav_control)/launch/uav_control_indoor.yaml" />
<param name="control/Takeoff_height" value="2" />
<rosparam command="load" file="$(find prometheus_uav_control)/launch/sensor_tf_offset.yaml" />
</node>
<!-- 2号飞机 -->
<node pkg="prometheus_uav_control" type="uav_control_main" name="uav_control_main_$(arg uav2_id)" output="screen">
<param name="uav_id" value="$(arg uav2_id)" />
<param name="sim_mode" value="$(arg sim_mode)" />
<param name="flag_printf" value="$(arg flag_printf)" />
<param name="control/enable_external_control" value="$(arg control/enable_external_control)" />
<rosparam command="load" file="$(find prometheus_uav_control)/launch/uav_control_indoor.yaml" />
<param name="control/Takeoff_height" value="2" />
<rosparam command="load" file="$(find prometheus_uav_control)/launch/sensor_tf_offset.yaml" />
</node>
<!-- 3号飞机 -->
<node pkg="prometheus_uav_control" type="uav_control_main" name="uav_control_main_$(arg uav3_id)" output="screen">
<param name="uav_id" value="$(arg uav3_id)" />
<param name="sim_mode" value="$(arg sim_mode)" />
<param name="flag_printf" value="$(arg flag_printf)" />
<param name="control/enable_external_control" value="$(arg control/enable_external_control)" />
<rosparam command="load" file="$(find prometheus_uav_control)/launch/uav_control_indoor.yaml" />
<param name="control/Takeoff_height" value="2" />
<rosparam command="load" file="$(find prometheus_uav_control)/launch/sensor_tf_offset.yaml" />
</node>
<!-- 启动虚拟摇杆驱动 -->
<arg name="joy_enable" default="true"/>
<group if="$(arg joy_enable)">
<node pkg="prometheus_uav_control" type="joy_node" name="joy_node" output="screen">
<param name="agent_num" value="$(arg agent_num)"/>
</node>
</group>
</launch>
上面launch文件用于启动UAV控制节点,在Prometheus下控制,为后面路径规划发送控制指令做准备
3、sitl_ego_planner_basic_octomap_d435i_swarm_depth.launch
<launch>
<arg name="uav1_id" default="1"/>
<arg name="uav2_id" default="2"/>
<arg name="uav3_id" default="3"/>
<!-- ego_planner 仿真 -->
<include file="$(find ego_planner)/launch_for_prometheus/advanced_param_swarm.xml">
<!-- 无人机编号 -->
<arg name="uav1_id" value="$(arg uav1_id)"/>
<arg name="uav2_id" value="$(arg uav2_id)"/>
<arg name="uav3_id" value="$(arg uav3_id)"/>
<!-- 地图尺寸 -->
<arg name="map_size_x_" value="50.0"/>
<arg name="map_size_y_" value="50.0"/>
<arg name="map_size_z_" value="4.0"/>
<arg name="map_origin_x_" value="-25.0"/>
<arg name="map_origin_y_" value="-25.0"/>
<!-- 可以通过限制ground_height和map_size_z来使得飞机在特定高度飞行 -->
<arg name="ground_height" value="0.5"/>
<!-- 虚拟天花板高度要小于等于ground_height+z_size,否则重置该高度 -->
<!-- 里程计话题 -->
<arg name="odometry_topic" value="/mavros/local_position/odom"/>
<!-- 相机及深度信息仿真中没有使用,此处可忽略(真机中使用) -->
<arg name="camera_pose_topic" value="/depth/no_set"/>
<arg name="depth1_topic" value="/uav$(arg uav1_id)/camera/depth/image_raw"/>
<arg name="depth2_topic" value="/uav$(arg uav2_id)/camera/depth/image_raw"/>
<arg name="depth3_topic" value="/uav$(arg uav3_id)/camera/depth/image_raw"/>
<arg name="cx" value="321.04638671875"/>
<arg name="cy" value="243.44969177246094"/>
<arg name="fx" value="387.229248046875"/>
<arg name="fy" value="387.229248046875"/>
<!-- 点云信息,仿真中由map_generator产生 -->
<arg name="cloud1_topic" value=""/>
<arg name="cloud2_topic" value=""/>
<arg name="cloud3_topic" value=""/>
<!-- scan -->
<arg name="scan_topic" value="no_scan"/>
<!-- 最大速度及加速度 -->
<!--arg name="max_vel" value="0.8" /-->
<!--arg name="max_acc" value="6" /-->
<arg name="max_vel" value="0.8" />
<arg name="max_acc" value="3" />
<!-- 规划的范围,一般设置为感知范围的1.5倍 7.5-->
<arg name="planning_horizon" value="7.5" />
<arg name="use_distinctive_trajs" value="true" />
<!-- 1: use 2D Nav Goal to select goal -->
<!-- 2: use global waypoints below -->
<!-- 单机建议直接使用rviz指定目标点,多机情况请预设目标点 -->
<arg name="flight_type" value="1" />
<!-- global waypoints -->
<!-- It generates a piecewise min-snap traj passing all waypoints -->
<arg name="point_num" value="1" />
<arg name="point0_x" value="7.0" />
<arg name="point0_y" value="0.0" />
<arg name="point0_z" value="1.5" />
<!-- 仿真 -->
<arg name="realworld_experiment" value="true" />
</include>
<!-- trajectory server:由B样条生成轨迹 -->
<!-- 偏航角初始值,重要参数 -->
<arg name="yaw_init" default="0.0"/>
<node pkg="ego_planner" name="uav$(arg uav1_id)_traj_server_for_prometheus" type="traj_server_for_prometheus" output="screen">
<param name="uav_id" value="$(arg uav1_id)"/>
<param name="control_flag" value="0"/>
<param name="traj_server/time_forward" value="1.0"/>
<param name="traj_server/last_yaw" value="$(arg yaw_init)"/>
</node>
<node pkg="ego_planner" name="uav$(arg uav2_id)_traj_server_for_prometheus" type="traj_server_for_prometheus" output="screen">
<param name="uav_id" value="$(arg uav2_id)"/>
<param name="control_flag" value="0"/>
<param name="traj_server/time_forward" value="1.0"/>
<param name="traj_server/last_yaw" value="$(arg yaw_init)"/>
</node>
<node pkg="ego_planner" name="uav$(arg uav3_id)_traj_server_for_prometheus" type="traj_server_for_prometheus" output="screen">
<param name="uav_id" value="$(arg uav3_id)"/>
<param name="control_flag" value="0"/>
<param name="traj_server/time_forward" value="1.0"/>
<param name="traj_server/last_yaw" value="$(arg yaw_init)"/>
</node>
<node pkg="ego_planner" name="motion_goal_swarm" type="motion_goal_swarm" output="screen"/>
</launch>
上面 launch文件在ego_planner包下启动ego_planner 仿真,并由B样条生成轨迹,发送控制指令给每台无人机,控制飞行。其中包含两部分/uav*_ego_planner_node和/uav*_traj_server_for_prometheus:
- /uav*_ego_planner_node进行ego_planner规划,相关源代码参见ego_planner_node.cpp ,ego_replan_fsm.cpp,planner_manager.cpp,文件路径: ~/Prometheus/Modules/ego_planner_swarm/plan_manage/src/。
- /uav*_traj_server_for_prometheus订阅ego_planner规划结果,由B样条(bspline)生成轨迹,转化为command命令控制无人机飞行。其源代码为traj_server_for_prometheus.cpp,文件路径: ~/Prometheus/Modules/ego_planner_swarm/plan_manage/src_for_prometheus/**