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bt_ros2 package from bt_ros2 repo

bt_ros2

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Package Summary

Tags No category tags.
Version 0.9.0
License Apache License 2.0
Build type AMENT_CMAKE
Use RECOMMENDED

Repository Summary

Description Behavior Tree that runs on ROS2
Checkout URI https://github.com/adlink-ros/bt_ros2.git
VCS Type git
VCS Version master
Last Updated 2022-01-13
Dev Status UNKNOWN
CI status No Continuous Integration
Released UNRELEASED
Tags No category tags.
Contributing Help Wanted (0)
Good First Issues (0)
Pull Requests to Review (0)

Package Description

Behavior Tree on ROS2

Additional Links

No additional links.

Maintainers

  • ChenYing Kuo

Authors

No additional authors.
README.md

BT on ROS 2

BT_ros2 is a demo of how to use Behavior Tree to control AMR. All the examples are tested on our NeuronBot simulation. If you are interested in NeuronBot simulation, please go to see the tutorials: https://github.com/Adlink-ROS/neuronbot2#bring-up-in-simulation

Build

  1. git clone the repo.
mkdir -p ~/bt_ros2_ws/src
cd ~/bt_ros2_ws/src
git clone https://github.com/Adlink-ROS/BT_ros2.git
  1. Install dependencies
source /opt/ros/<ROS2_DISTRO>/setup.bash
cd ~/bt_ros2_ws
rosdep install --from-paths src --ignore-src -r -y
  1. Build
colcon build --symlink-install
# If you want to build with OpenVINO support, add the define
# Remember to source OpenVINO before build
colcon build --symlink-install --cmake-args -DBUILD_OPENVINO=ON

Usage

We will run Gazebo with NeuronBot2 and show simple BT examples.

Basic Example

This example makes NeuronBot2 continuously moving between the pre-defined three goals in

```.

* Open 1st terminal and run mememan world.

```bash
source /opt/ros/<ROS2_DISTRO>/local_setup.bash
source ~/neuronbot2_ros2_ws/install/local_setup.bash
ros2 launch neuronbot2_gazebo neuronbot2_world.launch.py world_model:=mememan_world.model
  • Open 2nd terminal and run navigation.
source /opt/ros/<ROS2_DISTRO>/local_setup.bash
source ~/neuronbot2_ros2_ws/install/local_setup.bash
ros2 launch neuronbot2_nav bringup_launch.py map:=$HOME/neuronbot2_ros2_ws/src/neuronbot2/neuronbot2_nav/map/mememan.yaml open_rviz:=true use_sim_time:=true
  • Open 3rd termainal and run BT.
source /opt/ros/<ROS2_DISTRO>/local_setup.bash
source ~/bt_ros2_ws/install/local_setup.bash
ros2 launch bt_ros2 bt_ros2.launch.py

Advanced Example - Interrupt

In this example (refer to

```), when BT receives /interrupt_event, which is gohome, then NeuronBot2 will move to Goal_c.

* Open 1st terminal and run mememan world.

```bash
source /opt/ros/<ROS2_DISTRO>/local_setup.bash
source ~/neuronbot2_ros2_ws/install/local_setup.bash
ros2 launch neuronbot2_gazebo neuronbot2_world.launch.py world_model:=mememan_world.model
  • Open 2nd terminal and run navigation.
source /opt/ros/<ROS2_DISTRO>/local_setup.bash
source ~/neuronbot2_ros2_ws/install/local_setup.bash
ros2 launch neuronbot2_nav bringup_launch.py map:=$HOME/neuronbot2_ros2_ws/src/neuronbot2/neuronbot2_nav/map/mememan.yaml open_rviz:=true use_sim_time:=true
  • Open 3rd termainal and run BT.
source /opt/ros/<ROS2_DISTRO>/local_setup.bash
source ~/bt_ros2_ws/install/local_setup.bash
ros2 run bt_ros2 bt_ros2 --ros-args -p bt_xml:=$HOME/bt_ros2_ws/src/BT_ros2/bt_xml/bt_nav_mememan_interrupt.xml
  • Open 4th terminal and pub interrupt event.
source /opt/ros/<ROS2_DISTRO>/local_setup.bash
ros2 topic pub -1 /interrupt_event std_msgs/msg/String data:\ \'gohome\'

Advanced Example - Take a snapshot

The demo is to show how to take snapshots with BT example. You need to install OpenVINO and its ROS 2 wrapper before using the example.

  • Open 1st terminal and run OpenVINO object detection
# Source ROS 2 environment
# Setup OpenVINO environment and source wrapper
ros2 launch dynamic_vino_sample pipeline_object.launch.py
  • Open 2nd terminal and run image_saver
    • If you don’t have image_view, please run sudo apt install ros-${ROS_DISTRO}-image-view 
# Source ROS 2 environment
ros2 run image_view image_saver image:=ros2_openvino_toolkit/image_rviz
  • Open 3rd terminal and run BT
# Source ROS 2 environment
source ~/bt_ros2_ws/install/local_setup.bash
ros2 run bt_ros2 bt_ros2 --ros-args -p bt_xml:=$HOME/bt_ros2_ws/src/BT_ros2/bt_xml/bt_snapshot.xml

Advanced Example - OpenVINO object detection

This demo shows an integrated application with object detection and robot navigation. With different signal triggered by OpenVINO, the robot will navigate to certain position. The objects in the BT file are animals, which are cat, dog, cow.

  • Open 1st terminal and run mememan world.
# Source ROS 2 environment
source ~/neuronbot2_ros2_ws/install/local_setup.bash
ros2 launch neuronbot2_gazebo neuronbot2_world.launch.py world_model:=mememan_world.model
  • Open 2nd terminal and run OpenVINO object detection
# Source ROS 2 environment
# Setup OpenVINO environment and source wrapper
ros2 launch dynamic_vino_sample pipeline_object.launch.py
  • Open 3rd terminal and run navigation.
# Source ROS 2 environment
source ~/neuronbot2_ros2_ws/install/local_setup.bash
ros2 launch neuronbot2_nav bringup_launch.py map:=$HOME/neuronbot2_ros2_ws/src/neuronbot2/neuronbot2_nav/map/mememan.yaml open_rviz:=true use_sim_time:=true
  • Open 4th terminal and run BT
# Source ROS 2 environment
# Setup OpenVINO environment and source wrapper
source ~/bt_ros2_ws/install/local_setup.bash
ros2 run bt_ros2 bt_ros2 --ros-args -p bt_xml:=$HOME/bt_ros2_ws/src/BT_ros2/bt_xml/bt_openvino.xml
# An additional bt_xml file is prepared, which switch the action after trigger from navigation to teleop command.
#ros2 run bt_ros2 bt_ros2 --ros-args -p bt_xml:=$HOME/bt_ros2_ws/src/BT_ros2/bt_xml/bt_openvino_teleop.xml

Note

If you want to get the coordinate for navigation, you can run navigation2 and listen to the topic /goal_pose or open rviz2 to monitor tf.

The position and orientation should be put into BT file and the orientation value we use here is Quaternion.

Record X, Y in positoin and Z, W in orientation.

Open xml file in bt_xml and modify robot checkpoint with “ X ; Y ; Z ; W “ format in SetBlackboard.

If you only have Euler Angle and want to transfer to Quaternion, please refer to online tools, such as https://quaternions.online/

CHANGELOG
No CHANGELOG found.

Wiki Tutorials

This package does not provide any links to tutorials in it's rosindex metadata. You can check on the ROS Wiki Tutorials page for the package.

Package Dependencies

Deps Name
ament_cmake
ament_lint_auto
ament_lint_common
rclcpp
rclcpp_action
std_msgs
geometry_msgs
nav2_behavior_tree
nav2_msgs
behaviortree_cpp_v3

System Dependencies

No direct system dependencies.

Dependant Packages

No known dependants.

Launch files

No launch files found

Messages

No message files found.

Services

No service files found

Plugins

No plugins found.

Recent questions tagged bt_ros2 at Robotics Stack Exchange

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