| 摘要 |
The system comprises a Blue Tooth transmitter (3A-3F), local computers (1A-1F) with Blue Tooth-adapted radio signal receivers (2A-2F), mobile phones (5A-5F) connected to these computers, and a central computer (4). All the transmitters send a code to the receivers at given intervals and each local computer is in turn connected to the central computer via its mobile phone. The connection between the central and local computers can be continuous or associated with an automatic or manual dialling. |
