A concentration detection device and method
A concentration detection and concentration technology, used in transmittance measurement, scattering characteristic measurement, etc., can solve the problems of high HGB measurement value, low transmitted light intensity, and weak light intensity of the receiving device, and achieve the effect of accurate measurement results.
Active Publication Date: 2016-09-28
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD +1
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However, when there are many particles in the blood that cannot be dissolved (such as chylomicrons, unlyzed leukocytes, etc., the same below), strong scattering will occur, resulting in a lower intensity of transmitted light, so that the light received by the receiving device The light intensity becomes weaker, resulting in higher measured values of HGB
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[0012] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0013] Such as figure 1 and 2 As shown, it is a schematic structural view of an embodiment of a concentration detection device of the present invention, including: a light emitting device 1, a colorimetric cell 2, a solution to be tested 3, a transmitted light receiver 7, a scattered light receiver 8, and a processing device ( not shown in the figure), when making measurements, such as figure 1 As shown, the light-emitting device 1 is used to generate detection light, and the light-emitting device 1 emits collimated light through the colorimetric cell 2, and the solution 3 to be tested is in the cell, and the transmitted light after the optical path passes through the colorimetric cell 2 falls on the transmitted light receiver 7 Above, the transmitted light receiver 7 converts the transmitted light through photoelectric conversi...
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The invention discloses a concentration detection device, comprising: a light emitting device, a transmitted light receiver, a scattered light receiver, and a processing device; the light emitting device is located on one side of a colorimetric cell, and the light emitting device is used to generate detection light, The detection light passes through the colorimetric cell, the liquid to be measured is contained in the colorimetric cell, and the transmitted light receiver is located on the other side of the colorimetric cell, and is used for receiving light emitted by the light-emitting device and passing through the colorimetric cell. The transmitted light of the liquid to be measured converts the received light signal into a first electrical signal, and the scattered light receiver is used to receive the scattered light generated after the detection light passes through the colorimetric cell and convert the received light signal into a second electrical signal. For electrical signals, the processing device is connected to the transmitted light receiver and the scattered light receiver, respectively receives the electrical signals sent by the transmitted light receiver and the scattered light receiver, and according to the first electrical signal and the second electrical signal Or the first electrical signal obtains the concentration of the liquid to be tested. With the concentration detection device and method proposed in the present invention, the concentration detection result can be processed as a reference by measuring the intensity of scattered light, so that the measurement result can be more accurate.
Description
technical field [0001] The invention relates to a concentration detection device and method. Background technique [0002] The colorimetric method to measure the concentration of substances is a method of obtaining the concentration of certain components in the liquid by measuring the absorbance of the liquid according to the Beer-Lambert law. It is widely used in the fields of industrial testing, environmental monitoring, and medical testing. Generally, colorimetric detection includes the following components: light-emitting device, solution, and photoelectric conversion device. During detection, the light-emitting device generates incident light, which is roughly divided into three parts: absorbed light, scattered light, and transmitted light after passing through the solution. The absorbed light is absorbed by the solution, and the scattered light is caused by undissolved particles in the solution. The concentration is positively correlated, and the emitted light after a...
Claims
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IPC IPC(8): G01N21/51G01N21/59
Inventor 刘铁夫郭文恒
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD