发明名称 |
Surgical implement detector |
摘要 |
Provided is a detector system for detecting a plurality of items each having at least one RFID tag attached thereto. The detector system may include a presence detector and/or a message detector. The presence detector may include a signal reader which receives modulated carrier frequencies from the RFID tags during a predetermined response time period for comparison to a reference level. The signal reader may be configured as a power integrator or a constellation discriminator. The power integrator sums the power contained in signals transmitted by the RFID tags by integration for comparison to an environmental noise level measurement taken during a quiet period. For the constellation discriminator, bits contained in the modulating message are compared to the bit pattern of a predetermined reference constellation. The detector system may be configured as a 3-state detector which combines the presence detector with a message detector that indicates the identification code of the RFID tags. |
申请公布号 |
GB2438336(A) |
申请公布日期 |
2007.11.21 |
申请号 |
GB20070015757 |
申请日期 |
2006.02.08 |
申请人 |
CARL E FABIAN;FRANK O'NEILL |
发明人 |
CARL E FABIAN;FRANK O'NEILL |
分类号 |
G08B13/14;A61B5/06;G01V15/00;G08B1/08;G08B5/22 |
主分类号 |
G08B13/14 |
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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