SYSTEM FOR REMOTE MONITORING AND SAFETY MAINTENANCE OF PIPE LINES BURIED IN THE EARTH

A system for monitoring and managing an underground pipe is provided to reduce installation cost of the system and maintenance cost of the underground pipe by using the underground pipe as a communication line. Pipes(10_1~10_7) are formed of a conductive metal pipe and serve as electrical signal transmission lines. Plural first signal detection terminals(52) are installed on the respective pipes, measure erosion signals from the pipes, and transmit the erosion signals through the pipes. Plural signal relay terminals(60_1~60_6) relay signals while separating the erosion signals from anti-erosion signals. A second signal detection terminal(24) is installed on a valve chamber and/or a constant pressure chamber, detects the operation state of the valve chamber and/or constant pressure chamber, and transmits the operation state through the pipes. A control unit(26) controls driving mechanisms, so that a valve in the valve chamber and/or constant pressure chamber is opened or closed according to a control signal. An RTU(Remote Terminal Unit,40) collects signals from the first and second signal detection terminals and transmits the collected signals to a control center(70) via the signal relay terminals.