Danger determining device, danger determining method, danger notifying device, and danger determining program

A danger determining method for determining danger using,

• a sensing history database for storing an ID and position information of an article in an environment to be watched over, and an ID and position information of a person in the environment to be watched over, along with respective times;
• a dangerous article database for storing dangerous combination information in which an ID of a dangerous article, which is an article having a possibility of posing danger, of the articles in the environment to be watched over and an ID of a person, who may be present in the environment to be watched over, are associated;
• and
• an accessible location database for storing information on accessible locations in the environment to be watched over for every ID of a person who may be present in the environment to be watched over;
• the method comprising:
• an article-leaving-operation determination step for determining that the person has left the article when the position of the article and the position of the person are apart by more than a predetermined distance from the ID, the position information, and the time of the article as well as the ID, the position information, and the time of the person stored in the sensing history database;
• and
• a left-article danger degree determination step for determining whether or not the article determined as being left in the article-leaving-operation determination step has a possibility of posing danger by being left;
• wherein
• in the left-article danger degree determination step, is performed a first determination of determining whether a combination of the ID of the person in the environment to be watched over and the ID of the article determined as being left by the article-leaving-operation determination step stored in the sensing history database matches the dangerous combination information of the ID of the dangerous article and the ID of the person stored in the dangerous article database;
• is performed a second determination of determining whether or not the person in the environment to be watched over is capable of accessing the position of the article determined as being left by the article-leaving-operation determination step from the ID and the position information of the person in the environment to be watched over and the ID and the position information of the article determined as being left by the article-leaving-operation determination step stored in the sensing history database, and information on the accessible location of the person stored in the accessible location database;
• and is determined that the article determined as being left by the article-leaving-operation determination step poses danger by being left when determined as matching in the first determination and determined as accessible in the second determination in the left-article danger degree determining step.

A danger determining program for causing a computer to execute:

• an article-leaving-operation determination step for determining that a person has left an article when a position of the article and a position of the person are apart by more than a predetermined distance from the ID, position information, and time of the article as well as an ID, position information, and time of the person stored in a sensing history database;
• and
• a left-article danger degree determination step for determining whether or not the article determined as being left in the article-leaving-operation determination step has a possibility of posing danger by being left,
• while using the sensing history database for storing the ID and the position information of the article in an environment to be watched over, and the ID and the position information of the person in the environment to be watched over, along with respective times;
• a dangerous article database for storing dangerous combination information in which an ID of a dangerous article, which is an article having a possibility of posing danger, of the articles in the environment to be watched over and an ID of a person, who may be present in the environment to be watched over, are associated;
• and
• an accessible location database for storing information on accessible locations in the environment to be watched over for every ID of persons who may be present in the environment to be watched over,
• wherein in the left-article danger degree determination step, is performed a first determination of determining whether a combination of the ID of the person in the environment to be watched over and the ID of the article determined as being left by the article-leaving-operation determination step stored in the sensing history database matches the dangerous combination information of the ID of the dangerous article and the ID of the person stored in the dangerous article database;
• is performed a second determination of determining whether or not the person in the environment to be watched over is capable of accessing the position of the article determined as being left by the article-leaving-operation determination step from the ID and the position information of the person in the environment to be watched over and the ID and the position information of the article determined as being left by the article-leaving-operation determination step stored in the sensing history database, and information on the accessible location of the person stored in the accessible location database;
• and is determined that the article determined as being left by the article-leaving-operation determination step poses danger by being left when determined as matching in the first determination and determined as accessible in the second determination in the left-article danger degree determining step.