Light guide device and light guide method

A method of providing a light guide to an excavator by a light guide system, the method comprising:

• determining the type of attachment attached to the excavator;
• acquiring an angle of each of joint parts of the excavator;
• determining a position of the attachment attached to the excavator based on the angle of each of the joint parts of the excavator;
• determining a shape of a projected object based on the determined type of the attachment;
• and
• implementing the projected object at a projection position on an operation surface corresponding to the position of the attachment.

An excavator comprising:

• an angle sensor disposed for each of joint parts of the excavator and configured to acquire an angle of each of the joint parts of the excavator;
• a projection module configured to implement a projected object by using light;
• and
• a processor operatively connected to the angle sensor and the projection module,
• wherein the processor is configured to:
• determine a position of an attachment attached to the excavator based on the angle of each of the joint parts of the excavator acquired by the angle sensor;
• determine an operation surface based on workplace drawing information or operation information;
• and
• generate a control signal for projecting the projected object onto a projection position on the operation surface corresponding to a position of the attachment and transmit the control signal to the projection module, and
• wherein the projection module implements the projected object onto the projection position on the operation surface based on the received control signal.

The excavator of claim 20, wherein the processor is further configured to:

• determine a second wavelength of light for implementing the projected object;
• include information on the second wavelength, the projection position, and the shape of the projected object in the control signal;
• and
• transmit the control signal to the projection module, and
• wherein the projection module is configured to implement the projected object at the projection position by using the light with the second wavelength.