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Mobile robot obstacle avoidance navigation method and system

A mobile robot and robot technology, applied in the field of automation, can solve the problems of high maintenance cost, expensive hardware cost, unsuitable for robot development, etc., and achieve the effect of saving equipment cost, ensuring accuracy and effectiveness

Inactive Publication Date: 2015-12-02
BEIJING EVOLVER ROBOTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing robot autonomous obstacle avoidance navigation technology has the disadvantages of complex structure, expensive hardware cost, and high maintenance cost, and is not suitable for the rapidly growing robot development needs.

Method used

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  • Mobile robot obstacle avoidance navigation method and system
  • Mobile robot obstacle avoidance navigation method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Embodiment 1: A method for obstacle avoidance and navigation of a mobile robot.

[0076] figure 1 It is a flowchart of a method for obstacle avoidance and navigation of a mobile robot in Embodiment 1 of the present invention. Such as figure 1 As shown, the process includes the following steps:

[0077] Step 101, establishing a global map of the home environment.

[0078] The global map is the scope of the robot's activities, and it is marked with information such as the origin of coordinates, obstacles, and the scope of activities;

[0079] The global map is a grid map, a mesh graphic composed of a series of square grids, marking the information of the indoor environment;

[0080] The grid map records the position of the grid with the abscissa (X coordinate) and the ordinate (Y coordinate), and records the probability that each grid is occupied by obstacles with the CV value.

[0081] Step 102, setting the start point and end point of the robot movement.

[0082] ...

Embodiment 2

[0133] Embodiment 2: A method for planning a moving path of a robot according to the A* algorithm.

[0134] Figure 4 It is a flow chart of the method for planning the moving path of the robot according to the A* algorithm in the second embodiment of the present invention. Such as Figure 4 As shown, the method flow includes the following steps:

[0135] Step 201, put the starting point s into the open table;

[0136] Step 202, traversing child nodes in 8 directions around node s;

[0137] Step 203, judging whether the 8 child nodes are in the open table or the close table;

[0138] If the child node is in the open table, execute step 204;

[0139] If the child node is in the close table, execute step 206;

[0140] If the child node is not in the open table or the close table, perform step 208;

[0141] Step 204, recalculate the value of node h(n)+g(n) in the open table, and judge whether to decrease;

[0142] If it decreases, then execute step 205;

[0143] If no red...

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Abstract

The invention discloses a mobile robot obstacle avoidance navigation method and system. The method includes the following steps that: a global map of a home environment is established; the starting point and destination of the movement of a robot are set; the movement path of the robot is planned according to the A* algorithm; the position of a obstacle is marked in the global map; the movement path of the robot is re-planned according to the A* algorithm; the robot is controlled to move according to the planned path; and the robot arrives at the destination and stops moving. With the mobile robot obstacle avoidance navigation method and system of the invention adopted, unknown environment can be detected, so that the information of unknown obstacles can be obtained, and the estimation function is adopted to plan the shortest and most economical path, and therefore, the equipment cost of the obstacle avoidance navigation of the robot can be decreased; the position and movement attitude of the robot can be monitored in real time, and the walking attitude of the robot can be adjusted and controlled in real time, and the accuracy and effectiveness of the obstacle avoidance navigation of the robot can be ensured.

Description

technical field [0001] The invention relates to the technical field of automation, in particular to a method and system for obstacle avoidance navigation of a mobile robot. Background technique [0002] The development of robot technology is the common crystallization of the comprehensive development of science and technology. Robots can be divided into military robots, industrial robots, service robots, etc. according to their uses. Among them, there is a huge demand for mobile robots in these types of robots. [0003] The research scope of mobile robots covers: architecture, control mechanism, information system, sensing technology, planning strategy, and drive system, involving mechanical kinematics, artificial intelligence, intelligent control, pattern recognition, image processing, and vision technology , sensor technology, computer network and communication, and bioinformatics, etc. Mobile robots are not only widely used in industry, agriculture, medical treatment, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/02
CPCG05D1/02
Inventor 王玉亮王晓刚王巍薛林
Owner BEIJING EVOLVER ROBOTICS CO LTD
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