ROBOT CONTROL SYSTEM AND METHOD

• US 20120197434A1
• Filed: 01/20/2012
• Published: 08/02/2012
• Est. Priority Date: 01/28/2011
• Status: Abandoned Application

• Current Assignee: Pegatron Corporation
• Original Assignee: Pegatron Corporation
• Inventors: HO, Yueh-Sheng, LEE, Wei-Pang
• Application Number:
  US13/355,337
• Publication Number:
  US 20120197434A1
• Time in Patent Office: Days
• US Class Current: 700/245
• CPC Class Codes: B25J 9/1676 Avoiding collision or forbidden zones
• CPC Class Codes: G05B 2219/49157 Limitation, collision, interference, forbidden zones, avoid obstacles

Abstract

A robot control system includes a signal transmission device and a robot. The signal transmission device has two signal transmission elements that substantially transmit a first signal along a first direction and a second signal along a second direction respectively. The first signal defines a first signal area, and the second signal defines a second signal area. The overlap portion of the first and second signals defines a confinement area. The robot includes a detecting module and a control module. The detecting module detects the confinement area by detecting the first signal and the second signal simultaneously. When the detecting module detects the confinement area, the control module controls the robot to change direction and then move for a distance. Besides, a robot control method applied to the robot control system is also disclosed.

Claims

1. A robot control system, comprising:

a signal transmission device having two signal transmission elements, wherein the two signal transmission elements substantially transmit a first signal along a first direction and a second signal along a second direction respectively, the first signal defines a first signal area, the second signal defines a second signal area, and an overlap portion of the first signal and the second signal defines a confinement area; and

a robot comprising;

a detecting module detecting the first signal and the second signal; and

a control module controlling the robot to change direction and then move for a distance when the detecting module detects the confinement area by detecting the first signal and the second signal simultaneously.

2. The robot control system of claim 1, wherein the control module controls the robot:

to turn toward a reverse direction and then move for a distance;

to rotate for a preset angle and then move for a distance;

or

to turn toward the weaker one of the first signal and the second signal and then move for a distance.

3. The robot control system of claim 1, wherein after the robot has changed direction and then moved for the distance, the detecting module detects the first signal and the second signal again.

4. The robot control system of claim 3, wherein after the robot changes direction and then moves for the distance initiated as the detecting module detects the first signal originally and then detects both the first signal and the second signal later, and the detecting module detects again to determine that only the second signal is detected, the control module controls the robot to move toward a reverse direction.

5. The robot control system of claim 1, wherein when the detecting module detects the first signal or the second signal, the control module controls the robot to reduce a moving speed thereof.

6. The robot control system of claim 1, wherein the first signal and the second signal are electromagnetic-wave signals with different frequencies, different wavelengths, different transmission sequence encodings, or different polarization directions.

7. The robot control system of claim 1, wherein the first direction and the second direction are in parallel.

8. The robot control system of claim 1, wherein the first direction and the second direction have an included angle smaller than a divergence angle of the first signal and the second signal.

9. A robot control method for a robot control system having a robot and a signal transmission device, the signal transmission device having two signal transmission elements, the two signal transmission elements substantially transmitting a first signal along a first direction and a second signal along a second direction respectively, the robot control method comprising steps of:

detecting the first signal and the second signal; and

controlling a robot to change direction and then move for a distance when detecting the first signal and the second signal simultaneously;

wherein, the first signal defines a first signal area, the second signal defines a second signal area, and an overlap portion of the first signal and the second signal defines a confinement area.

10. The robot control method of claim 9, wherein the step of controlling the robot to change direction and then move for the distance is to control the robot:

to turn toward a reverse direction and then move for a distance;

to rotate for a preset angle and then move for a distance;

or

to turn toward the weaker one of the first signal and the second signal and then move for a distance.

11. The robot control method of claim 9, further comprising, after the robot has changed direction and then moved for the distance, a step of:

detecting the first signal and the second signal again.

12. The robot control method of claim 11, further comprising a step of:

after the robot changes direction and then moves for the distance initiated as detecting the first signal originally and then detects both the first signal and the second signal later, and detecting again to determine that only the second signal is detected, controlling the robot to move toward a reverse direction.

13. The robot control method of claim 9, further comprising a step of:

when detecting the first signal or the second signal, controlling the robot to reduce a moving speed thereof.

14. The robot control method of claim 9, wherein the first signal and the second signal are electromagnetic-wave signals with different frequencies, different wavelengths, different transmission sequence encodings, or different polarization directions.

15. The robot control method of claim 9, wherein the first direction and the second direction are in parallel.

16. The robot control method of claim 9, wherein the first direction and the second direction have an included angle smaller than a divergence angle of the first signal and the second signal.