| 摘要 |
This security system (100) includes an activity detection portion (2a, 2b, 2c, 2d, 3, 4) detecting an activity of a monitored person in a house, a first communication portion (16c) acquiring a detection result (information about the activity) and an abnormality determination portion (19) determining whether or not an abnormality is happening to the monitored person on the basis of the detection result and an activity history of the monitored person in the house and determining the extent of the abnormality of the monitored person.
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