Station apparatus and moving robot system

1. A station apparatus, comprising:

an Ultra-wideband (UWB) module configured to receive a first UWB signal transmitted by a moving robot; and

a processor operably coupled to the UWB module and configured to calculate a reception angle of the first UWB signal upon reception of the first UWB signal, and control the UWB module to transmit a second UWB signal, including a direction value determined based on the reception angle, to the moving robot for return of the moving robot,

wherein the UWB module comprises:

first and second antennas; and

a motor to rotate the first and second antennas, and

wherein the processor is further configured to:

determine whether the moving robot moves based on the direction value;

transmit the second UWB signal including the direction value to the moving robot through the first and second antennas;

transmit to the moving robot a third UWB signal for finding a return reference point and moving with respect to the return reference point, when the moving robot approaches the charging station from a rear of the charging station;

determine whether the robot moves based on the direction value; and

rotate the motor to transmit and receive signals with the moving robot toward the direction value based on determining that the moving robot moves based on the direction value.

2. The station apparatus of claim 1 , wherein the UWB module further comprises:

a UWB transceiver to transfer the first UWB signal received at at least one of the first and second antennas to the control unit, and transmit the second UWB signal.

3. The station apparatus of claim 2 , wherein the first antenna is disposed on a same line with the second antenna in a spaced manner.

4. The station apparatus of claim 2 , wherein the first and second antennas are directional antennas that transmit and receive the first and second UWB signals only at a preset azimuth angle.

5. The station apparatus of claim 2 , wherein the processor is further configured to calculate the reception angle based on a rotation angle of the motor corresponding to a reception time point of the first UWB signal when the first UWB signal is transferred.

6. The station apparatus of claim 2 , wherein the direction value is a movement path for the moving robot to return to a station position of the station apparatus.

7. The station apparatus of claim 1 , wherein the processor is further configured to:

determine whether the robot moves based on the return reference point; and

rotate the motor to transmit and receive signals with the moving robot toward the return reference point based on determining that the moving robot moves toward the return reference point.

8. The station apparatus of claim 1 , wherein the processor is further configured to:

confirm a current position of the moving robot based on the reception angle, and

determine the direction value for the moving robot to return to the station apparatus based on the current position and a set station position of the station apparatus.

9. A moving robot system, comprising:

a moving robot configured to perform autonomous travel; and

a charging station configured to charge the moving robot,

wherein the charging station comprises:

an Ultra-wideband (UWB) module configured to receive a first UWB signal transmitted by the moving robot; and

a controller operably coupled to the UWB module and configured to calculate a reception angle of the first UWB signal upon reception of the first UWB signal, and control the UWB module to transmit a second UWB signal, including a direction value determined based on the reception angle, to the moving robot for return of the moving robot,

wherein the moving robot extracts the direction value when the second UWB signal is received after transmitting the first UWB signal, and moves to the charging station based on the direction value,

wherein the UWB module comprises:

first and second antennas; and

a motor to rotate the first and second antennas, and

wherein the controller is further configured to:

determine whether the moving robot moves based on the direction value;

transmit the second UWB signal including the direction value to the moving robot through the first and second antennas;

transmit to the moving robot a third UWB signal for finding a return reference point and moving with respect to the return reference point, when the moving robot approaches the charging station from a rear of the charging station;

determine whether the robot moves based on the direction value; and

rotate the motor toward the direction value based on determining that the moving robot moves based on the direction value.