Handheld water-soluble epoxy resin concentration detection device

Abstract

The utility model relates to the technical field of spectrum detection, and discloses a handheld water-soluble epoxy resin concentration detection device which comprises a shell, a lithium battery and a control processing module electrically connected with the lithium battery are arranged in the shell, and the control processing module is further electrically connected with a display screen; the detection probe comprises a probe base, a mounting groove is formed in the end face, away from the shell, of the probe base, a coaxial shading cylinder is arranged in the mounting groove, a coaxial photoelectric sensor is arranged in the shading cylinder, and a plurality of light emitting diode sets are arranged on the side wall of the mounting groove at equal intervals in the circumferential direction with the photoelectric sensor as the axis. An included angle of 45 degrees is formed between the light-emitting diode group and the axis of the shading cylinder; the photoelectric sensor and the light-emitting diode group are electrically connected with the control processing module; the device disclosed by the utility model is simple and convenient to operate, high in detection speed, low in cost, small in size, convenient for hand-held operation, and convenient for detection and application in a production process.

Description

Technical Field

[0001] The utility model relates to the technical field of spectrum detection, in particular to a handheld water-soluble epoxy resin concentration detection device. Background Art

[0002] Water-soluble epoxy resin can be used as an additive to improve the toughness of the material. The mechanical properties of the composite material will be different depending on the concentration of the added water-soluble epoxy resin.

[0003] The existing method for detecting epoxy resin concentration generally uses a spectrometer for detection. However, the spectrometer is not easy to carry and the detection steps are cumbersome. It is usually used in the detection link after production is completed. Therefore, there is a lack of real-time and accurate detection equipment for water-soluble epoxy resin concentration in the production process. Operators usually judge the concentration based on subjective experience. This method has a large error, which leads to unstable product quality and seriously affects economic benefits. Utility Model Content

[0004] The utility model aims to provide a handheld water-soluble epoxy resin concentration detection device, aiming to solve or improve at least one of the above technical problems.

[0005] To achieve the above purpose, the utility model provides the following solution: The utility model provides a handheld water-soluble epoxy resin concentration detection device, comprising:

[0006] A housing, wherein a lithium battery and a control processing module electrically connected to the lithium battery are disposed in the housing, wherein the control processing module is also electrically connected to a display screen, and the display screen is disposed on a surface of the housing;

[0007] A detection probe, wherein the detection probe comprises a probe base, wherein one end of the detection probe away from the probe base is connected to the housing, wherein an installation groove is provided on the end face of the probe base away from the housing, wherein a coaxial light-shielding tube is provided in the installation groove, wherein a coaxial photoelectric sensor is provided in the light-shielding tube, wherein a plurality of light-emitting diode groups are provided on the side wall of the installation groove at equal intervals in the circumferential direction with the photoelectric sensor as the axis, wherein the light-emitting diode group forms an angle of forty-five degrees with the axis of the light-shielding tube, and wherein the photoelectric sensor and the light-emitting diode group are both electrically connected to the control processing module;

[0008] A waterproof cover covers the probe base.

[0009] Optionally, the side wall of the mounting groove is inclined at forty-five degrees along the axis of the light-shielding tube.

[0010] Optionally, one end of the detection probe away from the probe base is circumferentially fixed with a limiting strip, and one end of the shell close to the detection probe is provided with a limiting groove, and the limiting strip is engaged with the limiting groove.

[0011] Optionally, a limiting block is arranged in the limiting groove, and an opening for engaging with the limiting block is opened on the limiting strip.

[0012] Optionally, the limiting groove is composed of two symmetrical circular arcs and two symmetrical elliptical arcs.

[0013] Optionally, the shell is composed of two shell sections, and the two shell sections are symmetrically arranged along the axis of the shell and are detachably connected.

[0014] Optionally, a power switch electrically connected to the control processing module is provided on the housing.

[0015] Optionally, the housing is provided with function buttons and measurement buttons electrically connected to the control processing module.

[0016] The utility model discloses the following technical effects: through a handheld shell, a detection probe wrapped with a waterproof cover is immersed in a water-soluble epoxy resin solution, a light-emitting diode group is lit in turn, and light of different characteristic wavelengths is emitted to irradiate the water-soluble epoxy resin solution and generate diffuse reflection, a photoelectric sensor respectively collects diffuse reflection spectrum data under corresponding characteristic wavelengths and converts them into electrical signals, the detection data is transmitted to a control processing module through the photoelectric sensor, and after the control processing module performs calculations, a specific numerical value of the water-soluble epoxy resin concentration is obtained and sent to a display screen for display, the photoelectric sensor, the light-emitting diode group, and the control processing module are used to replace a traditional spectrometer for obtaining spectral information, the operation is simple, the detection speed is fast, the cost is low, the device is small in size, convenient for handheld operation, and convenient for detection and application in the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the detection probe of the utility model;

[0020] Figure 3 This is a bottom view of the detection probe of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the limit strip and the limit groove of the utility model.

[0022] In the figure: 1. Shell; 2. Lithium battery; 3. Control processing module; 4. Display screen; 5. Detection probe; 6. Probe base; 7. Mounting slot; 8. Shading tube; 9. Photoelectric sensor; 10. Light-emitting diode group; 11. Waterproof cover; 12. Limit strip; 13. Limit slot; 14. Limit block; 15. Power switch; 16. Function button; 17. Measurement button; 18. Calibration whiteboard. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Reference Figure 1-Figure 4 The utility model provides a handheld water-soluble epoxy resin concentration detection device, comprising:

[0026] A housing 1, wherein a lithium battery 2 and a control processing module 3 electrically connected to the lithium battery 2 are arranged in the housing 1, and the control processing module 3 is also electrically connected to a display screen 4, and the display screen 4 is arranged on the surface of the housing 1;

[0027] A detection probe 5, the detection probe 5 includes a probe base 6, one end of the detection probe 5 away from the probe base 6 is connected to the housing 1, a mounting groove 7 is provided on the end surface of the probe base 6 away from the housing 1, a coaxial light-shielding tube 8 is provided in the mounting groove 7, a coaxial photoelectric sensor 9 is provided in the light-shielding tube 8, a plurality of light-emitting diode groups 10 are provided at equal intervals in the circumferential direction on the side wall of the mounting groove 7 with the photoelectric sensor 9 as the axis, the light-emitting diode group 10 forms an angle of forty-five degrees with the axis of the light-shielding tube 8, and the photoelectric sensor 9 and the light-emitting diode group 10 are both electrically connected to the control processing module 3;

[0028] The waterproof cover 11 covers the probe base 6 .

[0029] Through the handheld shell 1, the detection probe 5 wrapped with the waterproof cover 11 is immersed in the water-soluble epoxy resin solution, and the light-emitting diode group 10 is lit in turn to emit light of different characteristic wavelengths, irradiating the water-soluble epoxy resin solution and generating diffuse reflection. The photoelectric sensor 9 respectively collects the diffuse reflection spectrum data under the corresponding characteristic wavelength and converts it into an electrical signal. The detection data is transmitted to the control processing module 3 through the photoelectric sensor 9, and after the control processing module 3 performs calculation, the specific value of the water-soluble epoxy resin concentration is obtained and sent to the display screen 4 for display. The photoelectric sensor 9, the light-emitting diode group 10, and the control processing module 3 are used to replace the traditional spectrometer for obtaining spectral information. The operation is simple, the detection speed is fast, the cost is low, and the device is small in size, which is convenient for handheld operation and convenient for detection and application in the production process.

[0030] Furthermore, the control processing module 3 is preferably of GD32 series.

[0031] Furthermore, the photoelectric sensor 9 is a digital signal sensor, and channel one of the photoelectric sensor 9 responds to visible light and near-infrared light, and channel two responds only to near-infrared light.

[0032] Furthermore, the LED group 10 includes a plurality of LEDs with different wavelengths and a base, the wavelength range is 300-1100 nm, and the wavelength and number of the LEDs are respectively set according to the characteristic wavelength and number of characteristic wavelengths required for the epoxy resin diffuse reflectance spectrum measurement.

[0033] Furthermore, the detection probe 5 and the housing 1 are both made of black resin and have a light-shielding function, which can effectively prevent interference from external light; the waterproof cover 11 is made of quartz glass, which has little effect on the optical signal and protects the detection probe 5 to achieve the purpose of immersing in a water-soluble epoxy resin solution to realize the concentration detection of the water-soluble epoxy resin.

[0034] To further optimize the solution, the side wall of the mounting groove 7 is inclined at 45 degrees along the axis of the light-shielding tube 8, which facilitates the inclined installation of the LED group 10 and ensures that the angle formed by the emitted light of the LED group 10 and the inner surface of the waterproof cover 11 is 45 degrees.

[0035] According to a further optimized solution, one end of the detection probe 5 away from the probe base 6 is circumferentially fixedly connected to a limiting strip 12 , and one end of the housing 1 close to the detection probe 5 is provided with a limiting groove 13 , and the limiting strip 12 is snap-fitted to the limiting groove 13 .

[0036] The limiting strip 12 and the limiting groove 13 are used to detect the connection between the probe 5 and the housing 1 .

[0037] According to a further optimized solution, a limiting block 14 is disposed in the limiting groove 13 , and an opening for engaging with the limiting block 14 is provided on the limiting strip 12 .

[0038] The limiting block 14 is used to limit the rotation direction of the limiting bar 12 .

[0039] According to a further optimized solution, the limiting groove 13 is composed of two symmetrical circular arcs and two symmetrical elliptical arcs.

[0040] In this way, the rotation direction of the limiting strip 12 can be further limited, thereby improving the connection stability between the detection probe 5 and the housing 1 .

[0041] According to a further optimized solution, the housing 1 is composed of two housing sections, which are symmetrically arranged along the axis of the housing 1 and are detachably connected.

[0042] Preferably, the limiting groove 13 is buckled with the limiting strip 12 by plugging in the plug hole or fixing with bolts.

[0043] As a further optimization solution, a power switch 15 electrically connected to the control processing module 3 is provided on the housing 1 .

[0044] According to a further optimized solution, the housing 1 is provided with a function button 16 and a measurement button 17 which are electrically connected to the control processing module 3 .

[0045] The lithium battery 2 provides suitable operating voltage and operating current for the control processing module 3 , the light emitting diode group 10 , the photoelectric sensor 9 , the measuring button 17 , the function button 16 , and the display screen 4 .

[0046] The light-emitting diode group 10, the photoelectric sensor 9, the measuring button 17, the lithium battery 2, the function button 16, the display screen 4, the power switch 15 and the control processing module 3 are connected by wires for transmitting electrical signals and are controlled by the control processing module 3; under the control of the control processing module 3, multiple light-emitting diode groups 10 are lit in sequence, and the electrical signal returned by the photoelectric sensor 9 is calculated, and the detection result is sent to the display screen 4 for display.

[0047] The utility model detection method comprises the following steps:

[0048] Collecting diffuse reflectance white spectrum RW: Turn on the power switch 15 to turn on the detection device, and then put the calibration white plate 18 close to the detection probe 5 to ensure that the contact surface of the detection probe 5 and the calibration white plate 18 forms a closed light-free space;

[0049] Press the measurement button 17, then light up the light-emitting diodes of different wavelengths one by one, and at the same time the photoelectric sensor 9 collects the corresponding diffuse reflection spectrum and saves it as the diffuse reflection white spectrum RW, which includes RW1 and RW2;

[0050] Collecting diffuse reflection dark spectrum RD: placing the calibration white plate 18 close to the detection probe 5 of the detection device to ensure that the contact surface of the detection probe 5 and the calibration white plate 18 constitutes a closed lightless space, and the photoelectric sensor 9 collects the diffuse reflection spectrum obtained after the light-emitting diode group 10 is completely extinguished, and saves it as the diffuse reflection dark spectrum RD, which includes RD1 and RD2;

[0051] Collecting diffuse reflection spectrum RS of the sample: immersing the detection probe 5 in the water-soluble epoxy resin solution, pressing the measurement button 17, and then lighting up the light-emitting diode groups 10 of different wavelengths one by one, and at the same time, the photoelectric sensor 9 collects the spectrum of light at each wavelength after diffuse reflection by the water-soluble epoxy resin solution, and saves it as the sample diffuse reflection spectrum RS, which includes RS1 and RS2;

[0052] Calculate the corrected diffuse reflectance spectrum RC of the sample: after respectively obtaining the above-mentioned diffuse reflectance white spectrum RW, diffuse reflectance dark spectrum RD and sample diffuse reflectance spectrum RS through the detection device, correct the sample diffuse reflectance spectrum RS according to the spectrum correction algorithm to obtain the sample corrected diffuse reflectance spectrum RC, and the sample corrected diffuse reflectance spectrum RC includes RC1 and RC2;

[0053] The spectral correction algorithm is:

[0054]

[0055] Where: RW is the diffuse reflectance white spectrum, RD is the diffuse reflectance dark spectrum, RS is the sample diffuse reflectance spectrum, and RC is the sample corrected diffuse reflectance spectrum;

[0056] Establish a prediction model for the concentration of water-soluble epoxy resin: take the sample calibrated diffuse reflectance spectrum RC as input and the true value of the concentration of water-soluble epoxy resin prepared by the standard method as output to establish a prediction model for the concentration of water-soluble epoxy resin;

[0057] Predicting the concentration of water-soluble epoxy resin: Substituting the corrected diffuse reflectance spectrum RC of the water-soluble epoxy resin sample into the prediction model, the specific value of the water-soluble epoxy resin concentration is obtained and sent to the display screen 4 for display.

[0058] The detection principle of the utility model is based on the different diffuse reflectance spectra of water-soluble epoxy resin solutions of different concentrations to visible / near-infrared. According to the difference in diffuse reflectance, a metrological model of water-soluble epoxy resin concentration and diffuse reflectance, i.e., a prediction model, is established. By measuring the visible / near-infrared diffuse reflectance spectrum of an unknown water-soluble epoxy resin solution and substituting it into the established prediction model, the concentration of the water-soluble epoxy resin in the water-soluble epoxy resin solution can be calculated. The influence of natural light on spectrum collection is taken into account, and the spectrum correction method is used to reduce the error. At the same time, a digital signal photoelectric sensor is used to improve the detection accuracy.

[0059] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0060] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A handheld water-soluble epoxy resin concentration detection device, characterized in that: include: A housing (1), wherein a lithium battery (2) and a control processing module (3) electrically connected to the lithium battery (2) are arranged inside the housing (1), wherein the control processing module (3) is also electrically connected to a display screen (4), and wherein the display screen (4) is arranged on a surface of the housing (1); A detection probe (5), the detection probe (5) comprising a probe base (6), one end of the detection probe (5) away from the probe base (6) being connected to the housing (1), an end surface of the probe base (6) away from the housing (1) being provided with a mounting groove (7), a coaxial light-shielding tube (8) being provided in the mounting groove (7), a coaxial photoelectric sensor (9) being provided in the light-shielding tube (8), a plurality of light-emitting diode groups (10) being provided at equal intervals in the circumferential direction on the side wall of the mounting groove (7) with the photoelectric sensor (9) as the axis, the light-emitting diode group (10) being at an angle of forty-five degrees with the axis of the light-shielding tube (8), and the photoelectric sensor (9) and the light-emitting diode group (10) being electrically connected to the control processing module (3); A waterproof cover (11), wherein the waterproof cover (11) covers the probe base (6).

2. A handheld water-soluble epoxy resin concentration detection device according to claim 1, characterized in that: The side wall of the mounting groove (7) is inclined at forty-five degrees along the axis of the light-shielding tube (8).

3. A handheld water-soluble epoxy resin concentration detection device according to claim 1, characterized in that: One end of the detection probe (5) away from the probe base (6) is circumferentially fixedly connected to a limit strip (12); one end of the housing (1) close to the detection probe (5) is provided with a limit slot (13); the limit strip (12) is snap-fitted to the limit slot (13).

4. A handheld water-soluble epoxy resin concentration detection device according to claim 3, characterized in that: A limiting block (14) is arranged in the limiting groove (13), and an opening for engaging with the limiting block (14) is provided on the limiting strip (12).

5. A handheld water-soluble epoxy resin concentration detection device according to claim 3, characterized in that: The limiting groove (13) is composed of two symmetrical circular arcs and two symmetrical elliptical arcs.

6. A handheld water-soluble epoxy resin concentration detection device according to claim 1, characterized in that: The housing (1) is composed of two housing sections, which are symmetrically arranged along the axis of the housing (1) and are detachably connected.

7. A handheld water-soluble epoxy resin concentration detection device according to claim 1, characterized in that: The housing (1) is provided with a power switch (15) electrically connected to the control processing module (3).

8. A handheld water-soluble epoxy resin concentration detection device according to claim 1, characterized in that: The housing (1) is provided with a function button (16) and a measurement button (17) which are electrically connected to the control processing module (3).

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