发明名称 |
Method and system for detecting changes in sensor sample streams |
摘要 |
<p>A method detects a change in a stream of samples acquired by a sensor. A stream of samples acquired by a sensor over time is stored sequentially in a buffer in which an oldest sample is discarded and a newest sample is stored when the buffer is full, such that the buffer forms a window of samples sliding forward in time. For each new sample, the buffer is partitioned into all possible pairs of contiguous sub-windows of samples including a first sub-window and a second sub-window such that the newest sample is stored in the second sub-window of the pair. A difference is determined between the first and second sub-window of each pair of the contiguous sub-windows of samples, and a maximum difference is assigned as a merit score. A change in the stream of samples is signaled if the merit score is greater than a predetermine threshold. The change can be abrupt or gradual.
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申请公布号 |
EP1986125(A3) |
申请公布日期 |
2011.11.30 |
申请号 |
EP20080006504 |
申请日期 |
2008.03.31 |
申请人 |
MITSUBISHI ELECTRIC CORPORATION |
发明人 |
NIKOVSKI, DANIEL N.;JAIN, ANKUR |
分类号 |
G06K9/00 |
主分类号 |
G06K9/00 |
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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