System for directing moving object

1. A moving-object directing system for directing a moving object to a target location comprising:

a moving-object directing unit including:

a directing signal transmitter for generating a first moving-object directing signal, sequentially transmitting the first moving-object directing signal 360° in all directions, generating a second moving-object directing signal corresponding to directing information for directing the moving object to the target location upon receiving a signal indicating successful reception of the first moving-object directing signal, and transmitting the second moving-object directing signal, and

a first RF (Radio Frequency) communication unit for receiving a signal indicating successful reception of the moving-object directing signal; and

the moving object including:

a second RF communication unit for wirelessly transmitting a signal indicating successful reception of the moving object directing signal to the moving object directing unit, and

a controller for controlling operations of a wheel according to directing information of the received moving-object directing signal.

2. The system according to claim 1 , wherein the directing signal transmitter includes:

a moving-object directing signal generator;

a reflective mirror for reflecting the moving-object directing signal generated from the generator;

a rotation unit for rotating the reflective mirror; and

a controller for controlling the moving-object directing signal, and at the same time controlling a rotation angle of the reflective mirror.

3. The system according to claim 2 , wherein the moving-object directing signal generator is an infrared transmitter.

4. The system according to claim 2 , wherein:

upon receiving the signal indicating successful reception of the moving-object directing signal via the first RF communication unit, the controller stops rotation of the reflective mirror, and controls generation of a moving-object directing signal corresponding to the reflective-mirror rotation angle information.

5. The system according to claim 4 , wherein the reflective-mirror rotation angle information is indicative of an offset angle of the moving object on the basis of the target location.

6. The system according to claim 4 , wherein the controller of the moving object controls wheel operations in a direction for reducing the reflective-mirror rotation angle information.

7. The system according to claim 2 , wherein:

if the controller does not receive the signal indicating successful reception of the moving object directing signal via the first RF communication unit, the controller rotates the reflective mirror by a predetermined angle.

8. The system according to claim 1 , wherein the moving object includes:

a wheel motor for rotating a wheel;

a wheel-motor drive for driving the wheel motor; and

a rotation-amount detector for detecting a rotation amount of the wheel,

wherein the controller of the moving object controls the wheel according to the received moving-object directing information and a signal of the rotation-amount detector.

9. The system according to claim 7 , wherein the moving object further includes a sensor unit composed of sensors capable of detecting an obstacle, pressure, and a cliff (or drop).

10. The system according to claim 1 , wherein the moving object is a cleaning robot, and the moving-object directing unit is a charging unit for charging the cleaning robot with electricity.

11. The system according to claim 1 , wherein:

the moving object includes a plurality of receivers for receiving the moving-object directing signal, and

the controller controls the wheel to receive the moving object directing signal via a center receiver from among the receivers.

12. The system according to claim 11 , wherein the moving object is a cleaning robot, and the receiver is an infrared receiver.

13. The system according to claim 1 , wherein the directing signal transmitter includes:

a moving-object directing signal generator;

a rotation unit for rotating the moving-object directing signal generator; and

a controller for controlling generation of the moving-object directing signal, and at the same time controlling a rotation angle of the rotation unit.

14. The system according to claim 13 , wherein the moving-object directing signal generator is an infrared transmitter.

15. The system according to claim 13 , wherein:

upon receiving the signal indicating successful reception of the moving-object directing signal via the first RF communication unit, the controller controls generation of the moving-object directing signal corresponding to rotation angle information of the moving object directing signal generator.

16. The system according to claim 15 , wherein the rotation angle information of the moving-object directing signal generator is indicative of an offset angle of the moving object on the basis of the target location.

17. The system according to claim 15 , wherein the controller of the moving object controls wheel operations in a direction for reducing the rotation angle information of the moving-object directing signal generator.

18. The system according to claim 13 , wherein:

if the controller does not receive the signal indicating successful reception of the moving object directing signal via the first RF communication unit, the controller rotates the moving-object directing signal generator by a predetermined angle.