Test tube detecting device

Abstract

The invention discloses a test tube detecting device. The test tube detecting device comprises a light-tight cavity; a light emitter and a light receiver are arranged at one end in the light-tight cavity; the light emitter is communicated with a light emitting channel which is formed in the light-tight cavity and is communicated with the external; the light receiver is communicated a light receiving channel which is formed in the light-tight cavity and is communicated with the external; the extending line of one end, far away from the light emitter, of the light emitting channel and the extending line of one end, far away from the light receiver, of the light receiving channel form an included angle alpha; the included angle alpha is greater than 0 degree and is less than 180 degrees; both the light emitter and the light receiver are connected with a driver. The problems that opposite-emitting type, reflecting type and light absorbing dark box-type test tube detecting devices cannot detect a test tube with very high light transmittance, the false detection caused by the absence of the test tube cannot be excluded, and the interference caused by ambient light cannot be excluded in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of medical detection instruments, and in particular relates to a test tube type detection device. Background technique [0002] At present, in sample analysis in various fields, test tubes are usually used to load samples to be analyzed (such as chemical reagents, blood, etc.), and the test tubes loaded with samples are placed in the configured detector to complete the analysis of sample characteristics. Detection, in practical applications, the tester is usually equipped with a test tube detection device to ensure that the test tubes loaded with samples can be detected quickly and reliably, so as to avoid various problems caused by false detection of samples. [0003] In the prior art, an infrared photoelectric sensor is usually used as a test tube detection device, and the test tube itself is used to block or reflect light to detect whether there is a test tube in the analyzer. For example, there is a fac...

AI Technical Summary

Problems solved by technology

The problem is that when the test tube is transparent and empty or filled with transparent liquid, there will be a very large missed detection; at the same time, it is greatly affected by the ambient light, resulting in false detection and missed detection

Although this method solves the problem of missed detection when some test tubes are transparent and empty or filled with transparent liquid, it cannot solve the problem of false detection and missed detection caused by the influence of ambient light at the same time.

[0006] When the light transmittance of the sample and the test tube carrying the sample is very good, coupled with the influence of ambient light, it will be difficult for the above-mentioned three existing test tube detection devices to judge whether the test tube has been detected, and it is easy to cause false detection. and missed detection, greatly affecting the accuracy of test tube detection

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