Research Article
Building a Smooth Medical Service for Operating Room Using RFID Technologies
Table 4
The signal strength matrix under different distances between two readers.
(a) Distance between two readers is 2 meters |
| Signal level | Distance between tag and reader | RSS |
| 0† | <0.5 m | | L1Δ | 0.5 m~1 m | | L2# | 1 m~2 m | | L3* | 2 m~3 m | |
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(b) Distance between two readers is 4 meters |
| Signal level | Distance between tag and reader | RSS |
| L0† | <1 m | | L1Δ | 1 m~2 m | | L2# | 2 m~4 m | | L3* | 4 m~6 m | − |
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(c) Distance between two readers is 6 meters |
| Signal level | Distance between tag and reader | RSS |
| L0† | <1 m | | L1Δ | 1 m~3 m | | L2# | 3 m~6 m | | L3* | 6 m~9 m | |
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(d) Distance between two readers is 8 meters |
| Signal level | Distance between tag and reader | RSS |
| L0† | <1 m | | L1Δ | 1 m~4 m | | L2# | 4 m~8 m | | L3* | 8 m~12 m | |
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(e) Distance between two readers is 12 meters |
| Signal level | Distance between tag and reader | RSS |
| L0† | <1 m | | L1Δ | 1 m~6 m | | L2# | 6 m~12 m | | L3* | 12 m~18 m | |
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