ENVIRONMENTAL DATA SYSTEM

摘要

An environmental data system which continuously records the output of one or more field located environmental sensors, and which establishes a communication link with a remote central control station when the output of any of the sensors, over a predetermined period of time, exceeds a predetermined threshold magnitude. When the communication link is established, data relative to the sensors is automatically transmitted to the central control station, along with suitable station and sensor identification. The communication link may also be activated from the central control system, to monitor the latest sensor readings at any field location.