激光避障程序通常使用 ROS(Robot Operating System)和 激光雷达(Lidar)的相关库来编写。以下是一个基本的激光避障程序的示例,使用了ROS和RPLIDAR库:
安装ROS和RPLIDAR
首先,确保你已经安装了ROS和RPLIDAR。可以参考以下命令进行安装:
```bash
sudo apt-get install ros- ``` 将` 创建一个新的ROS包,用于编写避障程序: ```bash cd ~/catkin_ws/src catkin_create_pkg laser_obstacle_avoidance roscpp sensor_msgs geometry_msgs cd ~/catkin_ws catkin_make source devel/setup.bash ``` 在`laser_obstacle_avoidance`包中创建一个新的Python脚本,例如`laser_obstacle_avoidance.py`,并添加以下代码: ```python !/usr/bin/env python import rospy from sensor_msgs.msg import LaserScan from geometry_msgs.msg import Twist class LaserObstacleAvoidance: def __init__(self): rospy.init_node('laser_obstacle_avoidance', anonymous=True) self.laser_sub = rospy.Subscriber('/scan', LaserScan, self.laser_callback) self.cmd_vel_pub = rospy.Publisher('/cmd_vel', Twist, queue_size=10) self.min_distance = 1.0 最小避障距离 def laser_callback(self, data): min_distance = min(data.ranges) if min_distance < self.min_distance: 避障逻辑 twist = Twist() twist.linear.x = 0.0 停止前进 twist.angular.z = 1.0 转向避开障碍物 self.cmd_vel_pub.publish(twist) else: 正常前进 twist = Twist() twist.linear.x = 0.2 前进速度 twist.angular.z = 0.0 转向保持直线 self.cmd_vel_pub.publish(twist) if __name__ == '__main__': try: avoidance = LaserObstacleAvoidance() rospy.spin() except rospy.ROSInterruptException: pass ``` 在`laser_obstacle_avoidance`包中创建一个`launch`文件,例如`laser_obstacle_avoidance.launch`,并添加以下代码: ```xml ``` 然后运行以下命令来启动ROS节点和激光雷达: ```bash roslaunch laser_obstacle_avoidance laser_obstacle_avoidance.launch ``` 这个示例程序订阅了激光雷达的扫描数据,并在检测到障碍物时停止前进并转向避开障碍物。你可以根据具体需求进一步扩展和优化这个程序。创建ROS包
编写激光避障程序
编译和运行