| 摘要 |
An environment monitoring telephone network system comprises:a plurality M of environment parameters detecting and transmitting units (16), which transmit data toward the remote acquisition exchange (7), said units being provided with N analog input sensors;at least a telephone network private line, in order to transmit detected data to the remote acquisition exchange, where a Data Logger (5) is located, and to supply remotely the detecting and transmitting unit;a plurality M of receiving units (18), each interconnected with a specific detecting and transmitting unit, said receiving units being located at the remote acquisition exchange and being linked with the input channels of a Data Logger, which in turn is linked, by means of a modem, to a storing and processing center, through a switched telephone network (6).
|
