Liquid relief device and liquid relief control method thereof

Abstract

The invention relates to a liquid relief device and a liquid relief method thereof. The liquid relief method comprises the steps of: setting N liquid relief control amounts; setting N practical liquidrelief amounts to obtain N practical liquid relief amount intervals; determining which interval, in the N practical liquid relief amount intervals, a practical liquid relief value required for the current liquid relief falls; carrying out interval compensation on the practical liquid relief value according to practical liquid relief amounts of two end points of the determined interval and two corresponding liquid relief control amounts, and carrying out environment factor compensation to obtain a liquid relief control value; and controlling the liquid relief device to carry out liquid reliefaccording to the liquid relief control value. According to the liquid relief device, the influences, on sample suction and ejection amounts, of hysterisis errors, external environment factors and viscosities of different samples are eliminated, so that the practical sample suction and ejection amounts are basically consistent with demand amounts, and the stability and repeatability of the liquid relief device in the liquid relief process are improved, thereby improving the detection reliability of in-vitro diagnosis detection systems.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a liquid pipetting device and a pipetting control method thereof. Background technique [0002] Nowadays, testing institutions generally conduct quantitative analysis based on the test results of in vitro diagnostic instruments. Pneumatic / hydraulic pipetting device is an important tissue component in in vitro diagnostic instruments, and its performance has an important impact on in vitro diagnostic instruments. In the field of in vitro diagnostics, it has become a trend to reduce or eliminate the carryover rate by using pneumatic / hydraulic pipetting devices that can be loaded with disposable tips. The sampling performance (stability, repeatability) of the pneumatic / liquid pipetting device directly affects the performance of the entire in vitro diagnostic system. According to the requirements of the supporting closed reagent system, the pneumatic / liquid pipetting device w...

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to solve the problem that the theoretical pipetting value and the actual pipetting value of the traditional liquid pipetting device have a difference between the theoretical pipetting value and the actual pipetting value, which will lead to inaccurate pipetting, and provide a method that can improve Liquid pipetting device with liquid pipetting precision and liquid pipetting control method

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