Autonomous navigation system of robot

The invention belongs to the field of navigation, and discloses a robot autonomous navigation system, which comprises an obstacle avoidance module and a moving module, the obstacle avoidance module comprises an ultrasonic ranging sensor, a distance judgment device, a camera device, an image recognition device and an obstacle avoidance device; the ultrasonic distance measuring sensor obtains the distance between an object in front of the moving direction of the robot and the robot; the distance judgment device judges whether the distance obtained by the ultrasonic distance measurement sensor is smaller than a set distance threshold value or not; the camera device shoots the front of the moving direction of the robot to obtain an obstacle avoidance image; the image recognition device recognizes the obstacle avoidance image and judges whether an obstacle exists in the obstacle avoidance image or not; and when the distance is smaller than a set distance threshold value or an obstacle exists in the obstacle avoida