JPS6488298A - Digital wide range monitor - Google Patents

Abstract

PURPOSE:To facilitate the integration and compaction of devices for a control center and contrive concentrated monitoring of multichannel signals by operating and processing reactor output on the basis of optical digital data automatically renewed and transmitted from an optical multiplexed processing unit and enabling accurate measurement. CONSTITUTION:Pulse signals and Cambel signals from a neutron detector 1 are output from an analog signal processing circuit 8 of an optical multiplexed processing unit 4 and mean square value is obtained in a mean square value circuit 10 with obtaining pulse counting value by a pulse counting circuit 9. Further, the signals from the detector 1 are converted into voltage signals in a high voltage power source circuit 11 for the detector 1. After each analog output value from the circuits 9, 10, 11 is converted into digital data in digital data processing circuits 13-15, successively sampled by a multiplexed data processing part 19 at regular intervals and converted into optical data, it is transmitted and output to a monitoring unit 9 of the control center automatically through an optic transmitting passage. The optical data being transmitted are converted into electric data, reactor output is computed on the basis of these data while storing the data in a memory part 24 of the unit 6.