发明名称 |
Systems and methods for monitoring spatial relationship between mobile objects |
摘要 |
A motion and proximity sensitive system for monitoring spatial relationship between mobile objects comprising two way communication between a Child Unit, affixed to the child, and a Parent Unit, carried by the parent or guardian, is disclosed. When the Child Unit senses motion and determines that it is beyond a set near field proximity to the Parent Unit, the Child Unit communicates alerts to the Parent Unit allowing the parent to trigger an alarm on the Child Unit. A second alarm function selected by the mode switch sounds an alarm automatically in response to motion beyond the set near field proximity according to an adaptive alarm sequence.
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申请公布号 |
US6265974(B1) |
申请公布日期 |
2001.07.24 |
申请号 |
US19990364726 |
申请日期 |
1999.07.30 |
申请人 |
LEXENT TECHNOLOGIES, INC. |
发明人 |
D'ANGELO MICHAEL R.;EGGERT GEOFFREY M.;QUALITZ JOSEPH E.;BRESLER ROBERT G. |
分类号 |
G08B13/22;G08B13/14;G08B21/00;G08B21/02;G08B21/24;(IPC1-7):G08B13/14 |
主分类号 |
G08B13/22 |
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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