Flowing phase proportion control method and device, high-pressure constant flow pump and storage medium

Abstract

The invention discloses a flowing phase proportion control method and device, a high-pressure constant flow pump and a storage medium. The flowing phase proportion control method includes the steps: acquiring the number and the mixing proportion of flowing phases to be mixed; acquiring one or more switching angle according to the mixing proportion and the corresponding relation between a cam shaftangle and the liquid absorption amount of a pre-calibrated high-pressure constant flow pump; matching a current cam shaft angle with the switching angles; switching an absorption object of the high-pressure constant flow pump from the current flowing phase to a next flowing phase corresponding to the successfully matched switching angle according to matching results. The switching angles are camshaft angles when the two flowing phases are switched. By the aid of the technical scheme, liquid mixing precision of the high-pressure constant flow pump can be improved.

Description

technical field [0001] The invention relates to the field of liquid analysis, in particular to a mobile phase ratio control method and device, a high-pressure constant-flow pump and a storage medium. Background technique [0002] In some liquid analysis instruments, it is necessary to mix two or more liquids to perform elution treatment on samples and achieve the purpose of sample separation. Taking the blood analyzer as an example, the hemoglobin in the blood sample can be separated by elution treatment. [0003] In order to mix the liquids of two or more components according to a predetermined ratio, in the prior art, it is necessary to control the proportional valve of the high-pressure constant flow pump through a predetermined time ratio, and perform switching operations on the liquids of two or more components to meet the mixing requirements. eluent. [0004] However, the inventors of the present application have found that the high-pressure constant-flow pump includ...

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Problems solved by technology

[0004] However, the inventors of the present application have found that the high-pressure constant-flow pump includes a suction stroke and an empty stroke in one stroke cycle, and the high-pressure constant-flow pump only performs a liquid suction operation when it is in the suction stroke, while the method of predetermined time ratio in the prior art It is necessary to include the calculation of suction time and empty time at the same time, adding redundant time to the control operation of the proportional valve, resulting in low liquid mixing accuracy of the high-pressure constant-flow pump

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