ANALOG DATA ACQUISITION UNIT IN AUTOMATIC ANALYZER

摘要

PURPOSE: To reduce the control load on a CPU by interconnecting the CPU, an ADC, an analog MPX, and a single chip microcomputer thereby distributing the acquisition and operation of analytic data in the control of CPU for an automatic analyzer. ;CONSTITUTION: An MPU 21 in a single chip microcomputer 2 sets a timer 24 with a minimum analog acquisition period thus generating a timing for acquiring an analog data. An MPX (analog multiplexer) 4 is then set with a channel for acquiring analog data and analytic results are subjected to A/D conversion through an ADC (analog digital converter) 3 before the CPU 1 is notified through a DPRAM 22. In other words, the CPU 1 for controlling an automatic analyzer performs motor control of analyzer, analytic control, acquisition and operation of analytic data, refuge of analytic data, notification to an operator, etc., but the single chip microcomputer 2 takes charge of acquisition of analytic data. Since the CPU 3 simply reads out digital data, acquired through the single chip microcomputer 2, from the DPRAM 22, control load of the CPU 1 is reduced.;COPYRIGHT: (C)1996,JPO