| 摘要 |
The invention relates to a device for monitoring the presence within premises, especially within offices, making it possible to replace the conventional devices having a timekeeper clock with an automatic monitor with no intervention from the individuals concerned. Moreover, the device fufills other functions through transmission of personal information between a centre and the individuals. The centre (1) is attached to a collection of transmitters (6, 11) and receivers (7, 12) which are fixed, via which it broadcasts radio signals, each of which contains a personal code identifying the addressee of the signal. Each individual concerned carries a transmitter/receiver badge (14) which, on receiving a signal containing his personal code, responds by transmitting a likewise coded signal. The centre (1) can thus, through periodic transmission of a set of signals, monitor the presence of the individuals concerned and count their hours of presence, forward to them personal call messages, and control access monitoring units (10). <IMAGE>
|
