Automatic stop device and automatic stop method
The present disclosure provides an automatic stop device and an automatic stop method that enable an autonomous-driving traveling object to automatically stop. Automatic stop device automatically stops a vehicle in response to urgent information requiring urgency. Automatic stop device includes: urgent information receiver configured to receive the urgent information; urgency determiner configured to determine a degree of urgency about the urgent information by choosing from a plurality of levels in accordance with the urgent information; surrounding information acquisition unit configured to acquire information about a situation surrounding the vehicle; and stop time determiner configured to determine a time taken to automatically stop the vehicle. The time is determined in accordance with the degree of the urgency and the information about the situation surrounding the vehicle. Automatic stop device further includes automatic stop unit configured to automatically stop the vehicle upon a lapse of the determined time.
1. An automatic stop device that automatically stops a vehicle in response to urgent information, the urgent information being information requiring urgency, the automatic stop device comprising:
an urgent information receiver configured to receive, from an information distribution apparatus external to the vehicle, the urgent information by wireless communication;
an urgency determiner configured to determine a degree of urgency about the urgent information chosen from a plurality of levels in accordance with the urgent information;
a surrounding information acquisition unit configured to acquire information about a situation surrounding the vehicle;
a stop time determiner configured to determine a time taken to automatically stop the vehicle, the time being determined in accordance with the degree of the urgency and the information about the situation surrounding the vehicle; and
an automatic stop unit configured to automatically stop the vehicle upon a lapse of the determined time,
wherein the urgent information is information selected from an urgent disaster report issued by an earthquake tsunami warning system and approaching urgent vehicle information, and
wherein the stop time determiner determines a shorter time taken to automatically stop the vehicle in response to the urgent information being the urgent disaster report issued by the earthquake tsunami warning system, and determines a longer time taken to automatically stop the vehicle in response to the urgent information being the approaching urgent vehicle information.
2. The automatic stop device according to claim 1 ,
wherein the surrounding information acquisition unit acquires at least information about a distance between the vehicle and a vehicle behind as the information about the situation surrounding the vehicle, and
wherein the stop time determiner determines the time taken to automatically stop the vehicle such that the time taken to automatically stop the vehicle is longer when the distance between the vehicle and the vehicle behind is smaller than is larger.
3. The automatic stop device according to claim 2 , further comprising a vehicle information acquisition unit configured to acquire information about a state of the vehicle,
wherein the stop time determiner determines the time taken to automatically stop the vehicle in accordance with the degree of the urgency, the information about the situation surrounding the vehicle, and the information about the state of the vehicle.
4. The automatic stop device according to claim 3 ,
wherein the vehicle information acquisition unit acquires at least information about a velocity of the vehicle as the information about the state of the vehicle, and
wherein the stop time determiner determines the time taken to automatically stop the vehicle such that the time taken to automatically stop the vehicle is shorter when the velocity of the vehicle is smaller than is larger.
5. A method of automatically stopping a vehicle in response to urgent information, the urgent information being information requiring urgency, the method comprising:
acquiring information about a situation surrounding the vehicle;
receiving, from an information distribution apparatus external to the vehicle, the urgent information by wireless communication;
determining a degree of urgency about the urgent information chosen from a plurality of levels in accordance with the urgent information;
determining a time taken to automatically stop the vehicle, the time being determined in accordance with the degree of the urgency and the information about the situation surrounding the vehicle; and
automatically stopping the vehicle upon a lapse of the determined time,
wherein the urgent information is information selected from an urgent disaster report issued by an earthquake tsunami warning system and approaching urgent vehicle information, and
wherein determining the time taken to automatically stop the vehicle includes determining a shorter time taken to automatically stop the vehicle in response to the urgent information being the urgent disaster report issued by the earthquake tsunami warning system, and determining a longer time taken to automatically stop the vehicle in response to the urgent information being the approaching urgent vehicle information.
6. The automatic stop device according to claim 1 , wherein the stop time determiner determines the time taken to automatically stop the vehicle subsequent to the degree of urgency about the urgent information being determined by the urgency determiner.
7. The automatic stop device according to claim 1 , wherein the information distribution apparatus is a base station.