Test tube rack for analyzer assembly line and displacement detection method and device of test tube rack

Abstract

A test tube stand for an analyzer pipeline. The test tube stand (201) is provided with multiple test tube positions for accommodating test tubes (203). One side of the test tube stand (201) is provided with a lighting preventing plate (300) traversing multiple test tube positions. A second characteristic region (303) is disposed between every two neighboring test tube positions on the lighting preventing plate (300). A first characteristic region (302) is disposed between every two second characteristic regions (303). A preset step level difference exists between the first characteristic region (302) and the second characteristic region (303).

Description

technical field [0001] The application relates to an analyzer assembly line system, a test tube rack, a displacement detection method and a device thereof. Background technique [0002] On the blood cell analysis line, the test tube rack is loaded with test tubes (containing blood samples) from the loading platform along the track to the detection area of ​​the blood cell analyzer, and then moves one test tube position at a time so that the test tubes pass through the test tube presence or absence detection sensor one by one And the sampling needle, the number is detected by the analyzer and the sample is collected. Since the test tube rack can hold multiple samples, if the test tube rack does not move in place (that is, the test tube does not move to the predetermined position) due to some factors, such as the loss of the motor, it may cause the remaining samples to be incorrectly numbered and sampled. Eventually, the test results and the identity of the tested person will...

AI Technical Summary

Problems solved by technology

However, since the test tube is included in the detection area of ​​the sensor, if the test tube is not affixed with a barcode, the reflection signal of the glass test tube at certain angles may be very strong when the sample is loaded, and a false pulse will be formed if the threshold is exceeded. Even if the test tube is affixed with a barcode, but The surface of some barcode paper is very bright, which may also cause the reflected signal to become very strong and form false pulses

Then there may be multiple pulses higher than the threshold between the two grooves, causing false negative judgments in the case of failure of the test tube rack to shift

That is to say, the test tube rack displacement detection technology has the risk of missed detection of displacement failure, the reliability is not high, and there are still clinical risks

[0005] In addition, the existing detection technology is in order to solve the temperature change, sensor aging, the position change of the test tube rack in the guide rail (the guide rail has a certain width, and the test tube rack can be changed by about 1mm in the width direction of the guide rail, that is, the front and rear directions), and the test tube rack is dirty. As a result of changes in the size of the reflected signal and thus affecting the reliability of the detection results, we can only choose a high-performance photoelectric sensor that is sensitive to distance changes in the reflected signal—the fiber optic sensor. The purpose is to increase the size of the groove signal and the edge signal as much as possible. gap

However, the cost of optical fiber sensors is high, which leads to an increase in the cost of detection instruments, which largely limits the wide application of test tube rack displacement detection technology.

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