发明名称 |
Personnel safety utilizing time variable frequencies |
摘要 |
A system to improve safety of workers who are in proximity to mobile machines includes a machine mountable radio-frequency identification reader that wirelessly monitors radio-frequency identification tags worn by workers moving relative to and in proximity to a mobile machine when the reader is mounted on the machine. The reader includes a processor and an antenna front-end which is switchable between an omni-directional antenna or at least one directional antenna. The omni-directional antenna is mountable so as to monitor a machine circumference completely around the mobile machine. Each directional antenna is mountable so as to monitor only either a front or a back of the mobile machine relative to the machine's direction of motion. |
申请公布号 |
US8248263(B2) |
申请公布日期 |
2012.08.21 |
申请号 |
US20090735388 |
申请日期 |
2009.01.09 |
申请人 |
SHERVEY RICHARD CLAYTON;DASILVA JOHN;CHAMSEDDINE AHMAD;HAUBRICH PETER;PSST MOBILE EQUIPMENT |
发明人 |
SHERVEY RICHARD CLAYTON;DASILVA JOHN;CHAMSEDDINE AHMAD;HAUBRICH PETER |
分类号 |
G08B21/00;B60W30/08;B60W30/09 |
主分类号 |
G08B21/00 |
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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