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Collision avoidance method for underwater robot based on forward-looking sonar

An underwater robot and forward-looking sonar technology, applied in two-dimensional position/channel control, etc., can solve problems such as blind spots, improve survivability, and reduce blind spots for collision avoidance

Active Publication Date: 2017-03-15
沈阳海人科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is simple to apply but has blind spots, and can only detect relatively large and simple obstacle information

Method used

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  • Collision avoidance method for underwater robot based on forward-looking sonar
  • Collision avoidance method for underwater robot based on forward-looking sonar
  • Collision avoidance method for underwater robot based on forward-looking sonar

Examples

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Embodiment

[0032] like figure 1 As shown, a collision avoidance method for an underwater robot based on forward-looking sonar includes an underwater robot, and the underwater robot is provided with a forward-looking sonar, a position sensor, a control device and an actuator; The data measured by the nanohe pose sensor implements the collision avoidance control strategy, adjusts the control amount of the actuator, and then adjusts the pose of the underwater robot to avoid obstacles.

[0033] The collision avoidance control strategy is divided into two types: reactive collision avoidance and deliberate collision avoidance. The control device adjusts the course and speed through the combination of these two collision avoidance methods. Reactive collision avoidance is a low-level intelligent behavior that does not require complex theoretical derivation and is fast. Deliberative collision avoidance is a high-level intelligent behavior that requires a complex analysis process and is slow, but...

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Abstract

The invention discloses a forward-looking sonar-based underwater robot collision avoidance method. The method is characterized in that: the method includes an underwater robot, on which a forward-looking sonar, a posture sensor, a controller and an actuating mechanism are arranged; according to the data measured by the forward-looking sonar and the posture sensor, the controller executes a collision avoidance control policy to regulate the controlling quantity of the actuating mechanism, and thereby the posture of the underwater robot is adjusted to avoid an obstacle. The method introduces the image data of the forward-looking sonar into the obstacle avoidance policy of the robot, so that the blind area of the robot in collision avoidance can be reduced. In terms of the collision avoidance policy, fast reaction type collision avoidance is integrated with slow deliberation type collision avoidance, so that the underwater robot can cope with not only suddenly appearing simple obstacles but also complex obstacles, and thereby the survival ability of the underwater robot is enhanced.

Description

technical field [0001] The invention relates to a collision avoidance method for underwater robots based on forward-looking sonar, and belongs to the technical field of intelligent control of underwater robots. Background technique [0002] Underwater robots have broad application prospects in marine scientific research, marine development, underwater engineering, and military affairs. Underwater robots work in a complex ocean environment, and there may be unknown obstacles such as reefs, dams, ships passing by on the navigation route, floating objects in the sea, underwater facilities, etc., which may cause the failure of underwater robots to perform tasks Even threaten the life of underwater robot. [0003] There are two types of collision avoidance sonar: distance sonar and sound-image sonar. At present, distance sonar is used. The distance sonar can only return the distance information of obstacles. Usually, multiple sonars need to be equipped in front, left, right, do...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D1/02
Inventor 吴宝举
Owner 沈阳海人科技有限公司
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