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Liquid volume monitoring device and method for sample analyzer

A technology of sample analyzer and monitoring device, which is applied in the direction of measuring device, optical device exploration, lubrication indicator device, etc. It can solve the problems of structural weight tolerance of weighing detection device, limited accuracy of weighing sensor, filling error, etc., and achieve saving Cost, considerable long-term economic benefits, and the effect of avoiding interference risks

Active Publication Date: 2020-12-15
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the weighing sensor used in the weighing detection device based on the weighing sensor generally adopts the principle of strain gauge, and the price is relatively high, and the output of the sensor is an analog signal. It is necessary to design an AD circuit to collect the analog signal, which increases the cost. The wires that the sensor transmits to the AD circuit also need to be shielded, add a magnetic ring, etc. to ensure that the analog signal is not disturbed, and it needs to increase the cost
Moreover, there is a tolerance in the structural weight of the weighing detection device, there is a tolerance in the weight of the liquid storage container, there is an error in the filling of the liquid in the liquid storage container, and the accuracy of the load cell is limited, so the weighing detection method needs to sacrifice the dead volume. Only a large setting can avoid false detection, and the liquid in the liquid storage container is a consumable, generally the price is high, and the large dead volume means high cost

Method used

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  • Liquid volume monitoring device and method for sample analyzer
  • Liquid volume monitoring device and method for sample analyzer
  • Liquid volume monitoring device and method for sample analyzer

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Embodiment 1

[0037] The first embodiment provides a liquid volume monitoring device of a sample analyzer. The sample analyzer may be a fully automatic immune or biochemical analyzer or the like.

[0038] Please refer to figure 1 , the liquid volume monitoring device includes a container storage mechanism 100, a container detection mechanism 200, an air bubble detection device 300, a liquid suction channel 400 and a controller (not shown in the figure).

[0039] The container storage mechanism 100 is used to store at least one liquid storage container, figure 1 Two container storage mechanisms 100 are shown in FIG. 2 , and two liquid storage containers 510 and 520 can be placed in total. The container storage mechanism 100 may be as figure 1 and 2 Shown is a cavity to receive the liquid storage container and may also be a mounting plate to receive the liquid storage container by bolts or other fastening means.

[0040] The container detection mechanism 200 is arranged relative to the s...

Embodiment 2

[0070] The second embodiment provides a liquid volume monitoring method of a sample analyzer. The sample analyzer may be a fully automatic immune or biochemical analyzer or the like. The biochemical sample analyzer includes a liquid storage container, a pumping channel, and a controller, the controller is electrically connected to the liquid storage container and the pumping channel, and the controller is used to monitor and refresh the liquid storage container margin.

[0071] The fluid volume monitoring method includes:

[0072] Residual refresh step: when the jump signal of the liquid storage container is detected, trigger the barrel change operation, and continue to detect until the liquid storage container jumps from non-existent to the detection, and the corresponding remaining amount of the liquid storage container will be Amount updated to 100%;

[0073] The remaining amount monitoring step: when it is detected that there is air bubble in the liquid pumping channel ...

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Abstract

The application discloses a liquid volume monitoring device and method. The application judges whether the water tank is full through the jump signal of the container detection mechanism, and outputs a digital signal. It does not need to design a detection circuit like a weighing detection device, and avoids the analog signal of the weighing sensor. The risk of interference caused by long-distance transmission does not require an anti-interference magnetic ring, which saves costs and improves anti-interference capabilities. At the same time, the air bubble detection device is used to judge whether the water tank is empty. Compared with the large dead volume of the traditional load cell, it can reduce the dead volume margin very well, save a lot of liquid costs, and the long-term economic benefits are considerable.

Description

technical field [0001] The application relates to a liquid volume monitoring device and method for a sample analyzer. Background technique [0002] Sample analyzers, such as fully automatic immunological and biochemical analyzers, usually have liquid storage containers for storing various liquids, and the liquids are pumped from these liquid storage containers for use when in use. When the liquid margin in the liquid storage container is lower than the lowest level (liquid suction port), the liquid can no longer be pumped, and the liquid storage container needs to be replaced. [0003] The liquid monitoring system of the liquid storage container of the existing automatic immune analyzer and biochemical analyzer is mainly based on the weighing detection device of the weighing sensor. In order to realize the monitoring of the liquid in the liquid storage container, a weighing sensor is used to weigh the liquid storage container, thereby judging the state of the liquid in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V8/10G01F23/00
CPCG01F23/00G01V8/10
Inventor 刘永祥
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD