System and method for controlling work machine

A system for controlling a work machine that loads materials onto a conveyance vehicle, the system comprising:

• a detection device configured to detect an operation of the conveyance vehicle;
• and
• a controller configured to control the work machine,
• the work machine including
• a work implement,
• a rotating body to which the work implement is attached, and
• a topography sensor configured to measure a topography in a periphery of the work machine, and
• the controller being configured to
• acquire topography data indicative of the topography measured by the topography sensor,
• determine a digging start position based on the topography measured by the topography sensor,
• acquire operation data indicative of an operation of the conveyance vehicle from the detection device,
• cause the rotating body to rotate toward the digging start position upon detecting an approach of the conveyance vehicle,
• control the work implement to perform digging at the digging start position,
• determine whether the conveyance vehicle is stopped at a predetermined loading position based on the operation data, and
• control the work machine to unload materials upon determining that the conveyance vehicle is stopped at the loading position.

The system according to 6, wherein

• the topography sensor is attached to the rotating body, and
• the controller is further configured to
• determine whether the rotating body is stopped or operating, and
• measure a topography by the topography sensor upon determining that the rotating body is stopped.

A method executed by a controller in order to control a work machine that loads materials onto a conveyance vehicle, the work machine including a work implement and a rotating body to which the work implement is attached, the method comprising:

• acquiring operation data indicative of an operation of the conveyance vehicle;
• causing the rotating body to rotate toward a predetermined unloading position;
• determining whether the conveyance vehicle is stopped at a predetermined loading position based on the operation data;
• causing the work implement to wait on standby at the unloading position upon determining that the conveyance vehicle is operating;
• and
• controlling the work machine to unload materials at the unloading position upon determining that the conveyance vehicle is stopped at the loading position.

A method executed by a controller in order to control a work machine that loads materials onto a conveyance vehicle, the work machine including a work implement and a rotating body to which the work implement is attached, the method comprising:

• acquiring topography data indicative of a topography in a periphery of the work machine;
• determining a digging start position based on the topography data;
• acquiring operation data indicative of an operation of the conveyance vehicle;
• causing the rotating body to rotate toward the digging start position upon detecting an approach of the conveyance vehicle;
• controlling the work implement to perform digging at the digging start position;
• determining whether the conveyance vehicle is stopped at a predetermined loading position based on the operation data;
• and
• controlling the work machine to unload materials upon determining that the conveyance vehicle is stopped at the loading position.