Information processing device, terminal, information processing method, alarm method, and alarm system

An information processing apparatus comprising:

• a processor that dynamically sets an area somewhere around a first terminal including a position of the first terminal based on a state of a mobile object on which the first terminal is mounted and the position of the first terminal and that determines entry or approach of a second terminal to the area;
• and
• a communicator that transmits, to the second terminal, a signal for causing the second terminal to output an alarm for the entry or the approach,
• wherein the communicator transmits a signal for causing the second terminal that has not been determined to be entering the area before the state of the mobile object changed but that is determined to be entering the area as a result of the change in the state of the mobile object to output an alarm different from an alarm for the second terminal that has been determined to be entering the area before and after the change in the state of the mobile object.

An information processing method performed by an information processing apparatus, the information processing method comprising:

• dynamically setting an area somewhere around a first terminal including a position of the first terminal based on a state of a mobile object on which the first terminal is mounted and the position of the first terminal;
• determining entry or approach of a second terminal to the area;
• and
• transmitting, to the second terminal, a signal for causing the second terminal to output an alarm for the entry or the approach,
• wherein the state of the mobile object is a state of movement of the mobile object,
• wherein the area is set such that a part of the area corresponding to a travel direction of the mobile object becomes larger than a part of the area opposite the part corresponding to the travel direction of the mobile object across the mobile object, and
• wherein a size of a part of the area opposite the part corresponding to the travel direction of the mobile object across the mobile object being greater than zero.

An alarm system, comprising:

• a first terminal;
• and
• a second terminal,
• wherein the alarm system dynamically sets an area somewhere around the first terminal including a position of the first terminal based on a state of a mobile object on which the first terminal is mounted and the position of the first terminal,
• wherein the alarm system determines entry or approach of the second terminal to the area,
• wherein the alarm system performs at least one of processing for transmitting, to the first terminal, a first signal for causing the first terminal to output a first alarm and processing for transmitting, to the second terminal, a second signal for causing the second terminal to output a second alarm,
• wherein the first terminal outputs the alarm in accordance with the first signal,
• wherein the second terminal outputs the alarm in accordance with the second signal,
• wherein the state of the mobile object is a state of movement of the mobile object,
• wherein the alarm system sets the area such that a part of the area corresponding to a travel direction of the mobile object becomes larger than a part of the area opposite the part corresponding to the travel direction of the mobile object across the mobile object, and
• wherein a size of a part of the area opposite the part corresponding to the travel direction of the mobile object across the mobile object being greater than zero.

An information processing method performed by an information processing apparatus, the information processing method comprising:

• dynamically setting an area somewhere around a first terminal including a position of the first terminal based on a state of a mobile object on which the first terminal is mounted and the position of the first terminal;
• determining entry or approach of a second terminal to the area;
• and
• transmitting, to the second terminal, a signal for causing the second terminal to output an alarm for the entry or the approach,
• wherein the communicator transmits a signal for causing the second terminal that has not been determined to be entering the area before the state of the mobile object changed but that is determined to be entering the area as a result of the change in the state of the mobile object to output an alarm different from an alarm for the second terminal that has been determined to be entering the area before and after the change in the state of the mobile object.