CODMn titration device based on color recognition

Abstract

The utility model relates to the technical field of CODMn analytical instruments, in particular to a CODMn titration device based on color recognition, which comprises a sample box, an image acquisition module and an illumination component, the sample box is provided with a sample cup accommodating cavity for placing a sample cup; the image acquisition module is arranged on the sample box and faces the interior of the sample cup accommodating cavity; and the lighting part is arranged on the sample box and faces the interior of the sample cup accommodating cavity. The automatic titration device has the advantages that the image acquisition module is arranged on the sample box, in the titration process of a sample, sample images are acquired in real time through the image acquisition module, the titration end point is judged according to the color change of the sample, the device is not in contact with the sample in the titration process, the sample is not influenced, and the judgment accuracy is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of CODMn analyzers, in particular to a CODMn titration device based on color recognition. Background Art

[0002] Most of the existing titration modules of CODMn automatic analyzers work in the way of potentiometric titration, that is, the titration end point is judged by the potential change. Since the potential detection requires placing the sensor into the sample, it may affect the sample itself if not handled properly or after long-term use, thereby affecting the accuracy of the sample measurement result. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a CODMn titration device based on color recognition.

[0004] The purpose of the utility model is realized by the following technical solutions: A CODMn titration device based on color recognition, comprising:

[0005] A sample box, on which a sample cup accommodation cavity for placing a sample cup is provided;

[0006] An image acquisition module, which is arranged on the sample box and faces into the sample cup accommodation cavity;

[0007] A lighting component, which is arranged on the sample box and faces into the sample cup accommodation cavity.

[0008] By arranging an image acquisition module on the sample box, during the sample titration process, the image of the sample is acquired by the image acquisition module, and the titration end point is determined according to the color of the sample, without contacting the sample throughout the process, avoiding affecting the sample itself and improving the accuracy of the sample measurement result. At the same time, a lighting component is arranged to provide sufficient light intensity for the image acquisition module by the lighting component, so that the color of the image acquired by the image acquisition module is more accurate.

[0009] In some embodiments, the image acquisition module and the lighting component are respectively arranged on the front and back sides of the sample box and are oppositely arranged. By arranging the image acquisition module and the lighting component oppositely, the light emitted by the lighting component passes through the sample cup and then enters the image acquisition module, using sufficient light intensity to improve the accuracy of the color of the image acquired by the image acquisition module.

[0010] In some embodiments, a magnetic stirring mechanism is further arranged at the bottom of the sample box. During the titration process, through the stirring of the magnetic stirring mechanism, the reagent dropped into the sample can be quickly mixed with the sample to fully react, shortening the time used for the titration process.

[0011] In some embodiments, the magnetic stirring mechanism includes a stirring motor and a magnetic stirrer. The stirring motor is disposed at the bottom of the sample box. A magnet is provided on the power output shaft of the stirring motor. The magnetic stirrer is placed in the sample cup placed in the sample cup accommodating cavity. By providing the stirring motor at the bottom of the sample box and a magnet on the power output shaft of the motor, when the motor rotates, it drives the magnet to rotate, and then drives the magnetic stirrer in the sample cup to rotate through the magnetic force of the magnet, achieving the purpose of stirring.

[0012] In some embodiments, a heat preservation layer is provided on the sample box. The heat preservation layer reduces the temperature change of the solution during the titration process, so as to reduce the influence of temperature change on the sample measurement result.

[0013] In some embodiments, a heating component is further included. The heating component includes a heating rod, and the heating rod is disposed at the bottom of the sample box. By providing the heating component, the heating component heats the ambient temperature, further avoiding the influence of too large temperature change on the sample measurement result.

[0014] In some embodiments, a temperature sensor is further included, and the temperature sensor is disposed at the bottom of the sample box. The temperature sensor is used to monitor the ambient temperature.

[0015] In some embodiments, the depth of the sample cup accommodating cavity is less than the height of the sample cup. Since the depth of the sample cup accommodating cavity is less than the height of the sample cup, when the sample cup is placed in the sample cup accommodating cavity, the top of the sample cup protrudes from the top of the sample box, facilitating the staff to take the sample cup.

[0016] In some embodiments, the image acquisition module includes a camera. An installation groove is provided on the front outer wall of the sample box. The installation groove communicates with the sample cup accommodating cavity. The image acquisition module is disposed in the installation groove. A protection plate for protecting the image acquisition module is further provided on the front outer wall of the sample box. By communicating the installation groove with the sample cup accommodating cavity, the image acquisition module can face the sample cup accommodating cavity, facilitating the acquisition of the sample state image.

[0017] In some embodiments, the lighting component includes an LED lamp. An installation hole is provided on the rear outer wall of the sample box. The installation hole communicates with the sample cup accommodating cavity. The lighting component is disposed in the installation hole. A fixing plate for fixing the lighting component is further provided on the rear outer wall of the sample box. By communicating the installation hole with the sample cup accommodating cavity, the lighting component can face the sample cup accommodating cavity, so that the light emitted by the lighting component enters the sample cup accommodating cavity.

[0018] The present utility model has the following advantages:

[0019] The utility model sets a sample cup accommodating cavity on the sample box, and sets an image acquisition module and a lighting component on the sample box, so that both the image acquisition module and the lighting component face the inside of the sample cup accommodating cavity. During the titration process, under the condition that the lighting component provides sufficient light intensity, the image acquisition module takes pictures in real time, and judges whether the titration process is over by judging whether the color of the sample reaches the target color. Compared with the potentiometric titration method, this device does not come into contact with the sample during the titration process, will not affect the sample itself, avoids affecting the sample measurement result, and improves the accuracy of the sample measurement result. Brief Description of the Drawings

[0020] Figure 1 is a schematic diagram of the overall structure of the CODMn titration device based on color recognition of the present utility model;

[0021] Figure 2 is a front view of the CODMn titration device based on color recognition of the present utility model;

[0022] Figure 3 is a schematic sectional view of the CODMn titration device based on color recognition of the present utility model;

[0023] In the figure: 1. Sample box; 11. Sample cup accommodating cavity; 12. Heat preservation layer; 2. Sample cup; 3. Image acquisition module; 4. Lighting component; 5. Magnetic stirring mechanism; 51. Stirring motor; 52. Magnetic stirring bar; 61. Heating rod; 62. Temperature sensor; 7. Protective plate; 8. Fixed plate; 9. Bracket. Detailed Embodiments

[0024] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model, and are not used to limit the present utility model, that is, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] The following will further describe the present utility model with reference to the drawings, but the protection scope of the present utility model is not limited to the following description.

[0026] As Figures 1-3 shown, the CODMn titration device based on color recognition includes:

[0027] A sample box 1, on which a sample cup accommodating cavity 11 for placing a sample cup 2 is provided;

[0028] An image acquisition module 3, the image acquisition module 3 is arranged on the sample box 1 and faces into the sample cup accommodating cavity 11;

[0029] An illumination component 4, the illumination component 4 is arranged on the sample box 1 and faces into the sample cup accommodating cavity 11.

[0030] Specifically, in this embodiment, a bracket 9 is arranged at the bottom of the sample box 1, and the bracket 9 facilitates the installation and fixation of the sample box 1. A total of four sample cup accommodating cavities 11 are arranged side by side on the sample box 1. In some other embodiments, multiple sample cup accommodating cavities 11 can also be arranged on the sample box 1, so that the sample box 1 has multiple dropping positions, and multiple dropping positions can work simultaneously, which can improve the working efficiency.

[0031] Correspondingly, a total of four image acquisition modules 3 and four illumination components 4 are arranged in this embodiment, and the four image acquisition modules 3 and the four illumination components 4 are respectively arranged corresponding to the four sample cup accommodating cavities 11; when the present utility model is used, during the titration process, the illumination component 4 is turned on to provide light in the sample cup accommodating cavity 11, and at the same time, the image acquisition module 3 real-time collects the image of the sample. The image acquisition module 3 transmits the image to the controller through a cable. The controller is a computer or a single-chip microcomputer, etc. It judges whether the color of the sample reaches the set threshold through color recognition, and further judges whether the titration process is over.

[0032] By cooperating the image acquisition module 3 with the illumination component 4, during the titration process, the device is prevented from contacting the sample, thereby avoiding affecting the measurement result.

[0033] Preferably, the image acquisition module 3 and the illumination component 4 are respectively arranged on the front and rear sides of the sample box 1 and are oppositely arranged.

[0034] Specifically, in this embodiment, the illumination component 4 is arranged on the rear side of the sample box 1, the image acquisition module 3 is arranged on the front side of the sample box 1, and both the image acquisition module 3 and the illumination component 4 are located at a lower position of the sample cup accommodating cavity 11. By arranging the image acquisition module 3 and the illumination component 4 oppositely, the light emitted by the illumination component 4 passes through the sample in the sample cup 2 and is collected by the image acquisition module 3, and sufficient light intensity enables the image collected by the image acquisition module 3 to have accurate color.

[0035] Preferably, a magnetic stirring mechanism 5 is further arranged at the bottom of the sample box 1. Through the stirring of the magnetic stirring mechanism 5, during the titration process, the dropped reagent is quickly mixed and fully reacted with the sample, accelerating the titration speed.

[0036] Preferably, the magnetic stirring mechanism 5 includes a stirring motor 51 and a magnetic stirrer 52. The stirring motor 51 is disposed at the bottom of the sample box 1. A magnet is provided on the power output shaft of the stirring motor 51. The magnetic stirrer 52 is placed in the sample cup 2 placed in the sample cup accommodating cavity 11.

[0037] Specifically, in this embodiment, a total of four magnetic stirring mechanisms 5 are provided corresponding to the four sample cup accommodating cavities 11. Motor seats are provided at the positions corresponding to the sample cup accommodating cavities 11 at the bottom of the sample box 1. The stirring motor 51 is connected to the sample box 1 through the motor seat. The power output shaft of the stirring motor 51 faces upward, i.e., in the direction of the sample cup accommodating cavity 11. A magnet is provided on the power output shaft of the stirring motor 51. During the titration process, the stirring motor 51 rotates, driving the magnet to rotate. The magnet drives the magnetic stirrer 52 placed in the sample cup 2 to rotate through magnetic force, thereby stirring the sample.

[0038] Preferably, a heat preservation layer 12 is provided on the sample box 1. During the titration process, the sample temperature is relatively high. To avoid excessive temperature drop of the sample, which may lead to too large a temperature difference before and after titration, in this embodiment, foaming materials such as polyurethane foam are filled at the bottom and side of the sample cup 2 to form the heat preservation layer 12. Through the heat preservation layer 12, the sample is heat-preserved, the temperature change during the titration process is reduced, and the influence of temperature change on the titration result is avoided.

[0039] Preferably, a heating component is further included. The heating component includes a heating rod 61. The heating rod 61 is disposed at the bottom of the sample box 1.

[0040] Specifically, in this embodiment, a total of two heating rods 61 are provided. Both heating rods 61 are disposed at the bottom of the sample box 1. The two heating rods 61 are respectively located between the two outer gaps among the multiple gaps between the four stirring motors 51. The heating rod 61 is used to heat the ambient temperature, further reducing the temperature change during the titration process and avoiding the influence of too large a temperature change on the titration result.

[0041] Preferably, a temperature sensor 62 is further included. The temperature sensor 62 is disposed at the bottom of the sample box 1. Specifically, in this embodiment, the temperature sensor 62 is disposed at the bottom of the sample box 1. The temperature sensor 62 is located in the central gap among the multiple gaps of the four stirring motors 51. The ambient temperature is monitored in real time through the temperature sensor 62 to avoid too large a temperature change.

[0042] Preferably, the depth of the sample cup accommodating cavity 11 is less than the height of the sample cup 2. By setting the depth of the sample cup accommodating cavity 11 to be less than the height of the sample cup 2, when the sample cup 2 is placed in the sample cup accommodating cavity 11, its top protrudes from the sample box 1, facilitating the staff to take the sample cup 2.

[0043] Preferably, the image acquisition module 3 includes a camera. An installation groove is provided on the front outer wall of the sample box 1, and the installation groove communicates with the sample cup accommodating cavity 11. The image acquisition module 3 is arranged in the installation groove, and a protection plate 7 for protecting the image acquisition module 3 is further provided on the front outer wall of the sample box 1.

[0044] Specifically, in this embodiment, four installation grooves are respectively provided on the front side of the sample box 1 corresponding to the four sample cup accommodating cavities 11. The image acquisition module 3 is embedded and installed in the installation groove, and the installation groove communicates with the sample cup accommodating cavity 11, so that the image acquisition module 3 can face the inside of the sample cup accommodating cavity 11 to collect sample images. In this embodiment, the protection plate 7 is a strip-shaped protection plate 7. The strip-shaped protection plate 7 is connected to the sample box 1 by bolts, and the strip-shaped protection plate 7 covers all the image acquisition modules 3 to protect the image acquisition modules 3.

[0045] Preferably, the lighting component 4 includes an LED lamp. An installation hole is provided on the rear outer wall of the sample box 1, and the installation hole communicates with the sample cup accommodating cavity 11. The lighting component 4 is arranged in the installation hole, and a fixing plate 8 for fixing the lighting component 4 is further provided on the rear outer wall of the sample box 1.

[0046] Specifically, in this embodiment, four installation holes are respectively provided on the rear side of the sample box 1 corresponding to the four sample cup accommodating cavities 11. The lighting component 4 is embedded and installed in the installation hole, and the installation hole communicates with the inside of the sample cup accommodating cavity 11, so that the light emitted by the lighting component 4 can enter the sample cup accommodating cavity 11. The fixing plate 8 on the sample box 1 is connected to the sample box 1 by bolts and presses and fixes the lighting component 4 in the installation hole.

[0047] The above is only the preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the above technical content without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical solution of the present invention without departing from the content of the technical solution of the present invention all belong to the protection scope of this technical solution.

Claims

1. A CODMn titration device based on color recognition, characterized in that, Comprising: A sample box (1) provided with a sample cup accommodating cavity (11) for placing a sample cup (2) thereon; An image acquisition module (3) disposed on the sample box (1) and facing into the sample cup accommodating cavity (11); A lighting component (4) disposed on the sample box (1) and facing into the sample cup accommodating cavity (11).

2. The CODMn titration device based on color recognition according to claim 1, wherein The image acquisition module (3) and the lighting component (4) are respectively disposed on the front and rear sides of the sample box (1) and are oppositely arranged.

3. The CODMn titration device based on color recognition according to claim 1, characterized in that, A magnetic stirring mechanism (5) is further disposed at the bottom of the sample box (1).

4. The CODMn titration device based on color recognition according to claim 3, wherein The magnetic stirring mechanism (5) includes a stirring motor (51) and a magnetic stirring bar (52). The stirring motor (51) is disposed at the bottom of the sample box (1), a magnet is disposed on the power output shaft of the stirring motor (51), and the magnetic stirring bar (52) is placed in the sample cup (2) placed in the sample cup accommodating cavity (11).

5. The CODMn titration device based on color recognition according to claim 1, characterized in that, A heat insulation layer (12) is disposed on the sample box (1).

6. The CODMn titration device based on color recognition according to claim 1, characterized in that, It further includes a heating component, and the heating component includes a heating rod (61) disposed at the bottom of the sample box (1).

7. The CODMn titration device based on color recognition according to claim 6, characterized in that, It further includes a temperature sensor (62) disposed at the bottom of the sample box (1).

8. The CODMn titration device based on color recognition according to claim 1, characterized in that, The depth of the sample cup accommodating cavity (11) is less than the height of the sample cup (2).

9. The CODMn titration device based on color recognition according to claim 1, wherein The image acquisition module (3) includes a camera. An installation groove is disposed on the front outer wall of the sample box (1), the installation groove communicates with the sample cup accommodating cavity (11), the image acquisition module (3) is disposed in the installation groove, and a protection plate (7) for protecting the image acquisition module (3) is further disposed on the front outer wall of the sample box (1).

10. The CODMn titration device based on color recognition according to claim 9, characterized in that, The lighting component (4) includes an LED lamp. An installation hole is disposed on the rear outer wall of the sample box (1), the installation hole communicates with the sample cup accommodating cavity (11), the lighting component (4) is disposed in the installation hole, and a fixing plate (8) for fixing the lighting component (4) is further disposed on the rear outer wall of the sample box (1).

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