Fully automatic immune analyzer high-speed centrifugation rotation disc and positioning control method thereof

Abstract

The invention belongs to the technical field of motor drive, and discloses a fully automatic immune analyzer high-speed centrifugation rotation disc and a positioning control method thereof, wherein the fully automatic immune analyzer high-speed centrifugation rotation disc comprises a centrifugation rotation disc, a motor driver, a direct current brushless motor, a reagent card groove and an absolute encoder. According to the present invention, the mass of the centrifugation rotation disc is concentrated at the center axis, and the outer edge of the centrifugation rotation disc is a fan-shaped strip-like structure so as to minimize the mass and reduce the rotation inertia under a certain radius; the direct current brushless motor is subjected to open loop acceleration operating accordingto a S-shaped curve to achieve a specific speed so as to drive the centrifugation rotation disc directly arranged on the motor output shaft to rotate, such that the sample in the reagent card groove is separated; after the separating is completed, the rotation speed of the motor is reduced; when the speed is reduced to a set speed, the motor performs closed loop movement; the photoelectric absolute encoder cooperatively arranged on the other end of the motor output shaft detects the position of the centrifugation rotation disc; and the centrifugation rotation disc is precisely controlled by using a PID control algorithm to stop at a specified position, such that the positioning precision of the fully automatic immune analyzer high-speed centrifugation rotation disc is improved, and the sample can be conveniently subjected to subsequent treatment by the mechanical arm.

Description

technical field [0001] The invention belongs to the technical field of motor drive, and in particular relates to a high-speed centrifugal turntable of a fully automatic immune analyzer and a positioning control method. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: the rapid development of modern medicine not only keeps innovating in medical methods, but also puts forward higher requirements for the efficiency of medical testing. The fully automatic immune analyzer is one of the important analytical instruments often used in clinical testing. It involves multiple disciplines and requires high precision and high reliability. It is a very complex system. The automatic immune analyzer automates the manual barcode scanning operation, card removal and puncture operation, reagent sample addition operation, high-speed centrifugation operation, oscillation discarding operation, etc. in medical clinical testing. impr...

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problems existing in the prior art are: the centrifuge module of the current fully automatic immunoassay analyzer has the disadvantages of centrifuge turntable structure being bulky, rotating speed unable to meet the requirement of separating reagents, centrifuge turntable not being able to be accurately positioned, low degree of automation, etc.

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