Measuring device and method for water quality analysis

Abstract

The invention relates to a measuring device and method for water quality analysis. The device comprises a light source, a first groove surface, a prism group, a grating, a second groove surface, an absorption cell, a light receiver, a photoelectric converter and a display, light beams generated by the light source refine incident light through the first groove surface, and then are reflected to the grating through the prism group to separate light with different wavelengths, and the light with different wavelengths is reflected again through the prism group, irradiates liquid in the absorption cell through the second groove surface and diffracts out of the liquid surface; the light receiver is used for receiving the light beam emitted from the absorption cell, a light signal of the light receiver is converted into an electric signal through the photoelectric converter, and the wavelength and the intensity of the light are displayed through the display screen so as to carry out water quality analysis. Compared with the prior art, the method has the advantages of capability of realizing rapid water quality analysis, simplicity in operation, high sensitivity and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality monitoring, and in particular to a measuring device and method for water quality analysis. Background Art

[0002] Currently, the commonly used analytical methods in the global water quality monitoring industry include laboratory methods, chemical methods, chromatography, biological methods and spectroscopy.

[0003] Among them, the laboratory method has the highest accuracy, but because of its time-consuming and the fact that the results are greatly affected by the operator's human factors, it is usually not used for real-time monitoring of water quality. The chemical method simulates the laboratory method, completing the sampling, pretreatment, reagent addition and reaction processes in the real-time monitoring equipment, and finally calculating the measurement results for display. Compared with the laboratory method, the chemical method has great advantages in detection speed and repeatability. It is currently the most common method for real-time monitoring of water quality, but it still cannot get rid of the shortcomings of complex structure, difficult equipment maintenance, and easy to cause secondary pollution to the environment. The spectral method uses the characteristics that different substances will produce different wavelengths and radiation intensities under light. By analyzing the spectrum, the content of each substance in the water is detected. In theory, it has the advantages of being fast and economical, but this method has high requirements for water samples. The water quality needs to be calibrated each time before it can be used, otherwise the error will be very large. Summary of the invention

[0004] The purpose of the present invention is to provide a measuring device and method for water quality analysis in order to overcome the defects of the above-mentioned prior art, such as complex structure, high requirements on water samples and difficult equipment maintenance.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A measuring device for water quality analysis, comprising a light source, a first slot surface, a prism group, a grating, a second slot surface, an absorption cell, a light receiver, a photoelectric converter and a display;

[0007] The light beam generated by the light source refines the incident light through the first groove surface, and then separates the light of different wavelengths after being reflected by the prism group to the grating. The light of different wavelengths is reflected by the prism group again, and irradiates the liquid in the absorption pool through the second groove surface, and diffracts the liquid surface.

[0008] The optical receiver is used to receive the light beam emitted from the absorption cell, and convert the optical signal of the optical receiver into an electrical signal through a photoelectric converter, and display the wavelength and intensity of the light through a display screen to perform water quality analysis.

[0009] Furthermore, the prism group includes a first prism and a second prism, the first prism is used to receive the light beam emitted through the first groove surface and reflect it to the grating surface; the second prism is used to receive light of different wavelengths separated by the grating surface and reflect it to the second groove surface.

[0010] Furthermore, the first groove surface and the second groove surface are both one or more.

[0011] Furthermore, the first groove surface and the second groove surface each include two baffles arranged horizontally to each other, and a gap exists between the two baffles to form a light-transmitting hole.

[0012] Furthermore, the liquid in the absorption cell is the liquid to be studied and analyzed.

[0013] The present invention also provides a water quality analysis method based on the measuring device for water quality analysis as described above, comprising the following steps:

[0014] Inject the liquid to be analyzed into the absorption cell;

[0015] A light beam is generated by a light source and directed to the first groove surface to refine the incident light, and then separated into lights of different wavelengths after being reflected by a prism group to a grating. Lights of different wavelengths are reflected by the prism group again, and irradiated onto the liquid in the absorption pool through the second groove surface, and diffracted out of the liquid surface;

[0016] The light beam emitted from the absorption cell is received by the light receiver, and the optical signal of the light receiver is converted into an electrical signal by the photoelectric converter. The wavelength and intensity of the light are displayed on the display screen for water quality analysis.

[0017] Furthermore, the method further comprises:

[0018] The light source is converted into multiple light signals of different wavelengths. The wavelength interval of the required light is subdivided by adjusting the number of grids of the grating to refine the wavelength corresponding to the required substance to be tested, thereby performing water quality analysis.

[0019] Furthermore, the method further comprises:

[0020] By increasing the number of the first groove surfaces and the second groove surfaces, multi-band high-intensity light conversion of a single light source can be achieved.

[0021] Furthermore, the water quality analysis is specifically as follows:

[0022] The measured wavelength and intensity of the light are compared with a preset known spectrum to perform qualitative spectral analysis.

[0023] Furthermore, the method also includes generating multiple light beams through a light source to simultaneously analyze water quality and verify each other, so as to improve the accuracy of the analysis results.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] (1) The present invention refines the light beam of the light source through the groove surface, separates the light of different wavelengths through prism reflection, and then irradiates the light into the absorption pool through another groove surface. By adjusting the number of grating grids, the light beam can be refined to the wavelength corresponding to the required substance, and the groove surface cooperates to make the light beam of the required wavelength irradiate the liquid to be tested in the absorption pool; then, through the processing of the light receiver, photoelectric converter and display screen, the wavelength and intensity of the light beam emitted by the liquid to be tested are calculated, which can be compared with the known spectrum in the inventory to perform spectral qualitative analysis, thereby reducing the consumption of drugs and the operation and maintenance cost of the instrument.

[0026] Moreover, the above scheme belongs to an optical analysis process, which has a faster response speed and a shorter absorption time than other analysis methods, and is convenient for continuous sample injection and data processing, which reduces the pretreatment process and speeds up the process.

[0027] (2) The operation is simple. The present invention can reduce the interference caused by human operation and can use a computer to achieve rapid compensation.

[0028] (3) It can realize the detection of a variety of complex ions and compounds, eliminating the need for complex chemical ion separation technology and explicit means.

[0029] (4) Good selectivity: only the spectral frequency band needs to be determined to select the desired ions, and it has strong anti-interference ability.

[0030] (5) High sensitivity, capable of achieving measurement analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure of a measuring device for water quality analysis provided in an embodiment of the present invention;

[0032] In the figure, 1, first groove surface, 2, prism group, 3, grating, 4, second groove surface, 5, absorption cell, 6, light receiver, 7, photoelectric converter, 8, display. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0037] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] Example 1

[0040] like Figure 1 As shown, this embodiment provides a measuring device for water quality analysis, including a light source, a first slot surface 1, a prism group 2, a grating 3, a second slot surface 4, an absorption cell 5, a light receiver 6, a photoelectric converter 7 and a display 8;

[0041] The light beam generated by the light source refines the incident light through the first groove surface 1, and then is reflected by the prism group 2 to the grating 3 to separate the light of different wavelengths. The light of different wavelengths is reflected by the prism group 2 again, and irradiates the liquid in the absorption pool 5 through the second groove surface 4, and diffracts the liquid surface.

[0042] The light receiver 6 is used to receive the light beam emitted from the absorption cell 5, and convert the light signal of the light receiver 6 into an electrical signal through the photoelectric converter 7, and display the wavelength and intensity of the light through the display screen to perform water quality analysis.

[0043] Specifically, the liquid in the absorption cell 5 is the liquid to be studied and analyzed.

[0044] The prism group 2 includes a first prism and a second prism. The first prism is used to receive the light beam emitted through the first groove surface 1 and reflect it to the surface of the grating 3; the second prism is used to receive the light of different wavelengths separated by the surface of the grating 3 and reflect it to the surface of the second groove surface 4.

[0045] The first groove surface 1 and the second groove surface 4 each include two baffles arranged horizontally to each other, and a gap is provided between the two baffles to form a light-transmitting hole.

[0046] The first groove surface 1 is provided to refine the incident light, so that a stronger and more concentrated light beam enters the grating;

[0047] The second groove surface 4 is provided to selectively shield the light of different wavelengths separated by the grating, so that the light beam of the required wavelength is irradiated into the absorption cell 5 .

[0048] Preferably, the first groove surface 1 and the second groove surface 4 can be set to one or more, and by increasing the number of groove surfaces, a multi-band high-intensity light conversion method of a single light source can be achieved.

[0049] Working principle:

[0050] The measuring device for water quality analysis uses a light source to refine the incident light through the first slot surface 1. When the incident light is reflected by the prism group 2 to the grating 3, light of different wavelengths is separated. The light of different wavelengths is reflected by the prism 2 again. Part of the light passes through the second slot surface 4, and part of the light is blocked. Multiple reflections through the prism can adjust the angle of the outgoing light and achieve the purpose of superimposing the optical signal.

[0051] The outgoing light passing through the second groove surface 4 directly contacts the liquid in the absorption pool 5. The liquid in the absorption pool 5 is the water quality to be studied. When light of different wavelengths enters the absorption pool, part of the light will be absorbed, and the remaining wavelength of light will diffract out of the liquid surface and be received by the light receiver 6. The optical signal is converted into an electrical signal through the photoelectric converter 7, and the wavelength and intensity of the final light are displayed on the display screen 8.

[0052] This embodiment also provides a water quality analysis method based on the above-mentioned measuring device for water quality analysis, comprising the following steps:

[0053] Injecting the liquid to be analyzed into the absorption cell 5;

[0054] A light beam is generated by a light source and directed to the first groove surface 1 to refine the incident light, and then is reflected by the prism group 2 to the grating 3 to separate the light of different wavelengths. The light of different wavelengths is reflected by the prism group 2 again, and is irradiated to the liquid in the absorption pool 5 through the second groove surface 4, and diffracts the liquid surface;

[0055] The light beam emitted from the absorption cell 5 is received by the light receiver 6, and the light signal of the light receiver 6 is converted into an electrical signal by the photoelectric converter 7, and the wavelength and intensity of the light are displayed on the display screen to perform water quality analysis.

[0056] Preferably, the method further comprises:

[0057] The light source is converted into multiple light signals of different wavelengths, and the wavelength interval of the required light is subdivided by adjusting the number of grids of the grating 3 to refine the wavelength corresponding to the required substance to be tested, thereby performing water quality analysis.

[0058] Optional, water quality analysis specifically for:

[0059] The measured wavelength and intensity of the light are compared with a preset known spectrum to perform qualitative spectral analysis.

[0060] Automatic verification can be performed electronically without the need for conventional calibration methods.

[0061] Preferably, the method further comprises:

[0062] By increasing the number of the first groove surfaces 1 and the second groove surfaces 4, multi-band high-intensity light conversion of a single light source is achieved.

[0063] Preferably, the method further comprises generating multiple light beams through a light source to simultaneously perform water quality analysis and verify each other, that is, utilizing two-way verification to ensure measurement accuracy, so as to improve the accuracy of the analysis result.

[0064] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A measuring device for water quality analysis, characterized in that: It comprises a light source, a first groove surface (1), a prism group (2), a grating (3), a second groove surface (4), an absorption cell (5), a light receiver (6), a photoelectric converter (7) and a display (8); The light beam generated by the light source refines the incident light through the first groove surface (1), and then is reflected by the prism group (2) to the grating (3) to separate the light of different wavelengths. The light of different wavelengths is reflected by the prism group (2) again, and is irradiated onto the liquid in the absorption pool (5) through the second groove surface (4), and diffracts the liquid surface. The light receiver (6) is used to receive the light beam emitted from the absorption pool (5), and convert the light signal of the light receiver (6) into an electrical signal through the photoelectric converter (7), and display the wavelength and intensity of the light through the display screen to perform water quality analysis.

2. A measuring device for water quality analysis according to claim 1, characterized in that: The prism group (2) comprises a first prism and a second prism, wherein the first prism is used to receive a light beam emitted from a first groove surface (1) and reflect it to a surface of a grating (3); and the second prism is used to receive light of different wavelengths separated by the surface of the grating (3) and reflect it to a surface of a second groove surface (4).

3. A measuring device for water quality analysis according to claim 1, characterized in that: The first groove surface (1) and the second groove surface (4) are both one or more.

4. A measuring device for water quality analysis according to claim 1, characterized in that: The first groove surface (1) and the second groove surface (4) both comprise two baffles arranged horizontally to each other, and a gap exists between the two baffles to form a light-transmitting hole.

5. A measuring device for water quality analysis according to claim 1, characterized in that: The liquid in the absorption cell (5) is the liquid to be studied and analyzed.

6. A water quality analysis method based on a measuring device for water quality analysis as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Injecting the liquid to be analyzed into the absorption cell (5); A light beam is generated by a light source and directed to the first groove surface (1) to refine the incident light, and then is reflected by a prism group (2) to a grating (3) to separate light of different wavelengths. The light of different wavelengths is reflected by the prism group (2) again and irradiated onto the liquid in the absorption pool (5) through the second groove surface (4), and diffracts the liquid surface. The light beam emitted from the absorption pool (5) is received by the light receiver (6), and the light signal of the light receiver (6) is converted into an electrical signal by the photoelectric converter (7), and the wavelength and intensity of the light are displayed on the display screen to perform water quality analysis.

7. The method according to claim 6, characterized in that The method further comprises: The light source is converted into multiple light signals of different wavelengths, and the wavelength interval of the required light is subdivided by adjusting the number of grids of the grating (3) to refine the wavelength corresponding to the required substance to be tested, thereby performing water quality analysis.

8. The method according to claim 6, characterized in that The method further comprises: By increasing the number of the first groove surfaces (1) and the second groove surfaces (4), multi-band high-intensity light conversion of a single light source is achieved.

9. The method according to claim 6, characterized in that The water quality analysis is specifically as follows: The wavelength and intensity of the measured light are compared with a preset known spectrum to perform qualitative spectral analysis.

10. The method according to claim 6, characterized in that The method also includes generating multiple light beams through a light source to simultaneously analyze water quality and verify each other, so as to improve the accuracy of the analysis results.

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