Device and method for detecting residual amount of reagent

A technology of remaining amount and reagent, which is applied in the field of detecting device for remaining amount of liquid, can solve the problem of high remaining amount of scanning, achieve the effects of improving sensitivity, enhancing anti-interference ability, and lowering the threshold

Active Publication Date: 2011-12-21
DIRUI MEDICAL TECH CO LTD
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Problems solved by technology

The disadvantage of this method of detecting zero point is that when the aspiration probe touches the bottom of the bottle, due to the spring pressure on the top of the aspiration probe and the friction between the aspiration probe and the shell, the aspiration probe will The optocoupler block on the top of the aspiration probe will not ...

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  • Device and method for detecting residual amount of reagent
  • Device and method for detecting residual amount of reagent
  • Device and method for detecting residual amount of reagent

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Embodiment Construction

[0031] A reagent residual detection device, comprising: a liquid suction probe 1, used to absorb the measured liquid and output its capacitance to the conversion module;

[0032] The conversion module 5 is used to detect the capacitance output by the liquid suction probe, and output a digital signal corresponding to the capacitance value;

[0033] The signal processing module 6 processes the digital signal and outputs the contact liquid level signal, and the signal processing module includes:

[0034] The first judging unit, whether the downward jump of the current voltage signal value compared with the base value voltage value is greater than the liquid level threshold, if so, output the first flag setting signal, if otherwise, output the first flag clearing signal;

[0035] The first flag counter is used to respond to the output of the first judging unit, add 1 when receiving the first flag setting signal, and reset to zero after receiving the first flag clea...

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Abstract

The invention provides a device and a method for detecting the remaining amount of a reagent. The method comprises the following steps of: charging and discharging a liquid-aspirating probe, and reading a voltage signal of the liquid-aspirating probe; judging whether the downward run-out amount of a current voltage signal value, compared with a base voltage value, is greater than a liquid level threshold value, if so, adding 1 to a first flag counter, otherwise, resetting the first flag counter; and judging whether a value of the first flag counter is greater than or equal to a first set value, and if so, outputting a contact liquid level indication signal. A method for scanning the remaining amount of the reagent comprises the following steps of: respectively adding 5-ml normal saline and 50-ml normal saline into reagent bottles; respectively measuring the heights of two reagent amounts by using the liquid-aspirating probe, and calculating the height of zero point of the bottom of the reagent bottle by using a mathematical method; and measuring the height of a liquid level to be measured in the reagent bottle to be measured by using the liquid-aspirating probe, and thus obtainingthe remaining amount of the liquid level. By the invention, detection accuracy is improved, and working reliability is improved.

Description

technical field [0001] The invention relates to a device and a method for detecting the remaining amount of liquid, in particular to a device and a method for detecting the remaining amount of a reagent in the medical field. Background technique [0002] Medical analysis instruments need to absorb reagents when analyzing body fluids, so it is necessary to determine whether the remaining amount of reagents meets the needs of the test before testing, which requires the detection of remaining reagents. First of all, the liquid level must be detected with a liquid suction probe, driven by the motor, the liquid suction probe goes down in the reagent bottle, when it touches the liquid level, in order to ensure the accuracy of the measurement, the motor must stop, so the instrument must For liquid level detection, when the needle tip touches the liquid level, it is necessary to output a contact liquid level signal to the motor control unit to control the motor to stop. The existin...

Claims

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Application Information

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IPC IPC(8): G01F23/26
Inventor 宋洁张力冲汪博王晨亮
Owner DIRUI MEDICAL TECH CO LTD
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