RADIO RELAY MONITORING SYSTEM, AND SIMULTANEOUS START PROGRAM FOR MONITORING TERMINAL

摘要

PROBLEM TO BE SOLVED: To provide a system capable of adding a monitoring terminal at a low cost.SOLUTION: A sewer water level monitoring system comprises: measurement communication terminals (monitoring terminals) 4-1 to 4-n for executing measurement communication of water levels in manholes M1 to Mn through water level sensor antennas; batteries for supplying drive power sources to the measurement communication terminals 4-1 to 4-n; water level sensors for measuring the water levels P in the manholes M1 to Mn; and antennas embedded in surfaces of manhole covers 7-1 to 7-n. The measurement communication terminals 4-1 to 4-n transmit water level information to relay reception terminals 20-1 to 20-n installed in the vicinities of the measurement communication terminals by short-range radio communication L. The relay reception terminals 20-1 to 20-n transmit the water level information to an information collection server S through an upper network W by the short-range radio communication L/wide area radio communication I.