REMOTE MEASUREMENT CONTROL SYSTEM

PURPOSE:To decrease a receiving error by constituting the title system so that the measuring time is instructed to a slave station equipment from a master station equipment in a time zone in which the noise level of a transmission is small, and the slave station equipment returns the measuring data, when it has been requested to return the measuring data from the master station equipment in a time zone in which the noise level is small. CONSTITUTION:A buried metallic structure is utilized as a transmission line 1, and in a time zone in which the noise of the transmission line 1 is small, a measurement is instructed to a slave station equipment 3 from a master station equipment 2, the slave station equipment 3 executes the measurement at the time which has been instructed by the master station equipment 2, and when it has been requested to return the measuring data from the master station equipment 2 in a time zone in which the noise of the transmission line 1 is small, the measuring data of the master station equipment 2 is returned. Also, in general, the noise level which is superposed on a metallic structure becomes small at night, even if it is large in the daytime, therefore, when the reception cannot be executed in the daytime, it will suffice that the transmission and reception are executed at night. In such a way, a receiving error decreases, the transmitting power becomes small, and the transmission distance becomes long.