发明名称 |
Device and system for detecting abnormality |
摘要 |
An abnormality detection device 30 includes small motion sensors 25a~25c that detect small motions of a person in a house, a data collecting unit 32 that collects and stores sensor signals from the small motion sensors 25a~25c as sensor patterns, a Markov chain operating unit 33 that transforms the sensor patterns into a cluster sequence by vector-quantizing input patterns which are obtained by averaging and normalizing the sensor patterns and calculates a transition number matrix and a duration time distribution of a Markov chain and so on using a Markov chain model, a comparing unit 34 that calculates characteristic amount (Euclid distance and average log likelihood in appearance frequency of a Markov chain and average log likelihood to the duration time distribution of a Markov chain) of a sample activity as against a daily activity based on the obtained transition number matrix and the duration time distribution and so on, and others.
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申请公布号 |
US2003117279(A1) |
申请公布日期 |
2003.06.26 |
申请号 |
US20020326447 |
申请日期 |
2002.12.23 |
申请人 |
UENO REIKO;KANEDA NORIKO;OMORI TAKASHI;HARA KOUSUKE;YAMAMOTO HIROSHI;INOUE SHIGEYUKI;TANAKA SHINJI |
发明人 |
UENO REIKO;KANEDA NORIKO;OMORI TAKASHI;HARA KOUSUKE;YAMAMOTO HIROSHI;INOUE SHIGEYUKI;TANAKA SHINJI |
分类号 |
G06K9/62;G08B21/04;G08B25/00;G08B25/04;G08B25/08;G08B31/00;(IPC1-7):G08B23/00 |
主分类号 |
G06K9/62 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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