A water quality monitoring device based on colorimetry

A water quality detection device and colorimetry technology, which is applied in measuring devices, color/spectral characteristic measurement, material analysis through optical means, etc., can solve problems such as unsatisfactory incident light, low detection accuracy, and different optical path of incident light , to achieve the effect of improving the accuracy of water quality detection

Inactive Publication Date: 2016-05-11
杭州富铭环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the actual application process, since the cuvette containing the water sample to be tested is a cylinder, the parallel incident light does not meet the requirement of perpendicular incident on the water sample to be tested, resulting in refraction of the incident light, and different positions The optical path L of the incident light is different (see figure 1 shows the optical path diagram of the existing water quality detection device), resulting in low detection accuracy

Method used

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  • A water quality monitoring device based on colorimetry
  • A water quality monitoring device based on colorimetry
  • A water quality monitoring device based on colorimetry

Examples

Experimental program
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Embodiment （ 1

[0024] see figure 2 and image 3 . in, figure 2 A structural schematic diagram of a cuvette of a water quality detection device based on colorimetry is shown in the present invention. image 3 It shows an optical path diagram of an embodiment of a water quality detection device based on colorimetry in the present invention.

[0025] Depend on figure 2 It can be seen that the cuvette of the device has a spherical protrusion 1 .

[0026] Depend on image 3 It can be seen that the device includes: a light emitter 21 , a first convex lens 22 , a cuvette 23 , a light receiver 24 and a processor 25 .

[0027] Wherein, the light emitter 21 is used for emitting incident light of a specific wavelength to the first convex lens 22 . The incident light is focused after being refracted by the first convex lens, and the focal point is located at the center of the spherical protrusion of the cuvette 23 . It should be noted that, in order to adjust the incident light conveniently, ...

Embodiment （ 2

[0035] see Figure 4 The light path diagram of another embodiment of the water quality detection device based on the colorimetry method of the present invention is shown.

[0036] Depend on Figure 4 It can be seen that, in this embodiment, in order to ensure that all the outgoing light passing through the cuvette 23 is received by the light receiver 24 , a second convex lens 26 is also provided between the cuvette 23 and the light receiver 24 . The outgoing light is absorbed by the light receiver 24 after being refracted by the second convex lens 26 .

[0037] It should be noted that, in this embodiment, the device further includes: a display 27 connected to the processor 25 for displaying the concentration of the substance to be measured, and an alarm 28 .

[0038] When the processor 25 determines that the concentration of the substance to be tested in the water sample to be tested exceeds the preset value, the processor 25 outputs a corresponding control signal to the ala...

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Abstract

The invention discloses a water quality monitoring device based on a colorimetric method, wherein the device comprises a light transmitter, a first convex lens, a cuvette with a spherical protuberance, a second convex lens and an optical receiver. The incident light transmitted by the light transmitter is focused after being refracted by the first convex lens and a focus point is positioned at the sphere center of the cuvette spherical protuberance, so that the incident light can verticality irradiate a water sample to be detected and the optical path of the incident light in the water sample to be detected is equal, thus the incident light meets the Lambert-Beer law and the detection precision of water quality can be improved.

Description

technical field [0001] The invention relates to the field of environmental monitoring, in particular to a water quality detection device based on colorimetry. Background technique [0002] With the intensification of environmental pollution, the water resources that people rely on for survival have also been polluted to a large extent, so that people's domestic water and production water contain a large amount of harmful substances, such as trivalent chromium ions. In order to ensure the safety of people’s water use, the water sample to be tested is usually irradiated with parallel light of a specific wavelength at present, and the substance to be tested in the water sample will absorb the light energy of this wavelength, and then the water sample to be tested can be obtained through Lambert-Beer’s law. Measure the substance concentration. [0003] It should be noted that Beer's Law of Lambert requires that the incident light be vertically incident on the water sample to be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/31G01N21/01
Inventor 杨斌蒋益民陈明
Owner 杭州富铭环境科技有限公司
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