A liquid concentration sensor

Abstract

The utility model discloses a kind of liquid concentration sensors, including shell, installation cavity is equipped in shell, hemispherical spherical lens is equipped in installation cavity, spherical lens bottom plane side is arranged on installation cavity bottom surface center position, shell bottom surface is equipped with the shell through-hole corresponding with spherical lens bottom plane side arrangement, shell two sides are equipped with the entrance channel and exit channel respectively, relative arrangement along shell center, incident channel light outlet end is communicated with installation cavity, exit channel light inlet end is communicated with installation cavity, infrared ray component that infrared ray is emitted to spherical lens is equipped in incident channel, detection camera component that spherical lens reflected infrared ray is received is equipped in exit channel, the lamp angle between the infrared ray of infrared ray component emission and the vertical direction of the ball center of spherical lens is 64.75 degrees, the camera angle between the lens direction of detection camera component and the vertical direction of the ball center of spherical lens is 51.92 degrees, simplify overall structure and improve liquid concentration detection accuracy.

Description

Technical Field

[0001] This utility model relates to a liquid concentration sensor. Background Technology

[0002] A refractometer is a device for measuring the refractive index of a liquid. Since the refractive index of a liquid increases when a solid soluble substance dissolves, the content of this solid soluble substance can be measured by measuring the refractive index. Therefore, a refractometer can be used to measure the content of solid soluble substances in a liquid. Solid soluble substances in aqueous solutions are often sugars, so a refractometer is also called a saccharimeter when measuring beverages (such as juice and coffee).

[0003] Existing liquid concentration sensors for refractometers suffer from complex structures and low detection accuracy. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art and provides a liquid concentration sensor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A liquid concentration sensor, characterized in that: it includes a housing, an inner cavity for mounting, a hemispherical spherical lens within the mounting cavity, the bottom plane of the spherical lens being positioned at the center of the bottom surface of the mounting cavity, a housing through hole corresponding to the bottom plane of the spherical lens on the bottom surface of the housing, an entrance channel and an exit channel respectively arranged opposite to each other along the center of the housing on both sides of the housing, the light-emitting end of the entrance channel communicating with the mounting cavity, the light-input end of the exit channel communicating with the mounting cavity, an infrared component enclosing the other end of the entrance channel and emitting infrared light to the spherical lens within the entrance channel, and a detection camera component enclosing the other end of the exit channel and receiving infrared light reflected from the spherical lens within the exit channel, the light angle between the infrared light emitted by the infrared component and the vertical direction of the center of the spherical lens being 64.75 degrees, and the camera angle between the lens direction of the detection camera component and the vertical direction of the center of the spherical lens being 51.92 degrees.

[0007] The liquid concentration sensor described above is characterized in that the distance between the end of the infrared component and the center of the spherical lens is 23.08 mm.

[0008] The liquid concentration sensor described above is characterized in that the distance between the end of the detection camera assembly and the center of the spherical lens is 15mm.

[0009] The liquid concentration sensor described above is characterized in that: the infrared component is disposed at the end position of the outer end of the incident channel.

[0010] The liquid concentration sensor described above is characterized in that: the infrared component includes an infrared cover plate that covers and seals the outer end of the incident channel, and an infrared emitting tube is provided on the inner side of the infrared cover plate.

[0011] The liquid concentration sensor described above is characterized in that: an infrared emitting tube is provided with a 3mm diameter LED bead.

[0012] The liquid concentration sensor described above is characterized in that: the detection camera assembly is located at the end position of the outer end of the emission channel.

[0013] The liquid concentration sensor described above is characterized in that: the detection camera assembly includes a camera cover plate that covers and seals the outer end of the emission channel, and a detection camera embedded in the emission channel is provided on the inner side of the camera cover plate.

[0014] The beneficial effects of this utility model are:

[0015] This invention features a hemispherical spherical lens positioned at the center of the mounting cavity of the housing. Symmetrically arranged entrance and exit channels are located on both sides of the housing. An infrared component emitting infrared rays to the spherical lens is placed within the entrance channel, while a detection camera component receiving the reflected infrared rays from the spherical lens is placed within the exit channel. The lamp angle between the infrared rays emitted by the infrared component and the vertical direction of the center of the spherical lens is set to 64.75 degrees, and the camera angle between the lens direction of the detection camera component and the vertical direction of the center of the spherical lens is set to 51.92 degrees. This design simplifies the overall structure and improves the accuracy of liquid concentration detection. Attached Figure Description

[0016] Figure 1 This is one of the schematic diagrams of this utility model;

[0017] Figure 2 This is the second schematic diagram of the present utility model;

[0018] Figure 3 This is one of the exploded views of this utility model;

[0019] Figure 4 This is the second exploded view of the present invention;

[0020] Figure 5 This is one of the cross-sectional views of this utility model;

[0021] Figure 6 This is the second sectional view of the present invention. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indication will also change accordingly. Furthermore, descriptions involving "preferred," "second-best," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "preferred" or "second-best" may explicitly or implicitly include at least one of those features.

[0024] like Figure 1-6 As shown, a liquid concentration sensor includes a housing 1, an installation cavity 2 inside the housing 1, a hemispherical spherical lens 3 inside the installation cavity 2, the bottom plane side of the spherical lens 3 being positioned at the center of the bottom surface of the installation cavity 2, a housing through hole 4 corresponding to the bottom plane side of the spherical lens 3 on the bottom surface of the housing 1, an entrance channel 5 and an exit channel 6 respectively arranged opposite to each other along the center of the housing 1 on both sides of the housing 1, the light-emitting end of the entrance channel 5 communicating with the installation cavity 2, and the light-input end of the exit channel 6 communicating with the installation cavity 2, an infrared component 7 inside the entrance channel 5 sealing the other end of the entrance channel 5 and emitting infrared light to the spherical lens 3, and a detection camera component 8 inside the exit channel 6 sealing the other end of the exit channel 6 and receiving infrared light reflected from the spherical lens 3, the light angle between the infrared light emitted by the infrared component 7 and the vertical direction of the center of the spherical lens 3 is 64.75 degrees, and the camera angle between the lens direction of the detection camera component 8 and the vertical direction of the center of the spherical lens 3 is 51.92 degrees. In practical applications, the bottom surface of the liquid concentration sensor is placed on the liquid being detected, i.e., the spherical lens 3 is placed on the liquid being detected. After the infrared component 7 emits infrared light, the infrared light enters the mounting cavity 2 through the incident channel 5 and is incident on the spherical lens 3. After being reflected by the liquid and the spherical lens 3, the infrared light enters the exit channel 6 and is received by the detection camera component 8 for data detection. The concentration of the detected liquid is then calculated by the control module, simplifying the overall structure. The angle between the infrared light emitted by the infrared component 7 and the vertical direction of the center of the spherical lens 3 is 64.75 degrees, and the camera angle between the lens direction of the detection camera component 8 and the vertical direction of the center of the spherical lens 3 is 51.92 degrees, which greatly improves the detection accuracy.

[0025] like Figure 6 As shown, in this case, the distance between the end of the infrared component 7 and the center of the spherical lens 3 is 23.08 mm; the distance between the end of the detection camera component 8 and the center of the spherical lens 3 is 15 mm, which improves the detection accuracy.

[0026] like Figure 3-6As shown, the infrared component 7 is located at the end of the outer side of the incident channel 5. The infrared component 7 includes an infrared cover plate 71 that covers and seals the outer side of the incident channel 5. An infrared emitting tube 72 is provided on the inner side of the infrared cover plate 71. The structure is simplified. The infrared cover plate 71 keeps the incident channel 5 in a closed and unaffected state. The infrared emitting tube 72 is provided with a 3mm diameter lamp bead, which improves the detection accuracy.

[0027] like Figure 3-6 As shown, the detection camera assembly 8 is located at the end of the outer end of the emission channel 6; the detection camera assembly 8 includes a camera cover plate 81 that covers and seals the outer end of the emission channel 6, and a detection camera 82 embedded in the emission channel 6 is provided on the inner side of the camera cover plate 81. The structure is simplified, and the camera cover plate 81 keeps the emission channel 6 in a closed and unaffected state, thereby improving the detection accuracy.

[0028] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A liquid concentration sensor characterized by: The device includes a housing (1), a mounting cavity (2) inside the housing (1), a hemispherical spherical lens (3) inside the mounting cavity (2), the bottom plane side of the spherical lens (3) being positioned at the center of the bottom surface of the mounting cavity (2), a housing through hole (4) on the bottom surface of the housing (1) corresponding to the bottom plane side of the spherical lens (3), and an entrance channel (5) and an exit channel (6) on both sides of the housing (1) respectively, arranged opposite to each other along the center of the housing (1). The light-emitting end of the entrance channel (5) is connected to the mounting cavity (2), and the light-input end of the exit channel (6) is connected to the mounting cavity (2). 2) Connected, the incident channel (5) is provided with an infrared component (7) that closes the other end of the incident channel (5) and emits infrared rays to the spherical lens (3), and the exit channel (6) is provided with a detection camera component (8) that closes the other end of the exit channel (6) and receives infrared rays reflected by the spherical lens (3). The angle between the infrared rays emitted by the infrared component (7) and the vertical direction of the center of the spherical lens (3) is 64.75 degrees, and the camera angle between the lens direction of the detection camera component (8) and the vertical direction of the center of the spherical lens (3) is 51.92 degrees.

2. A liquid concentration sensor according to claim 1, characterised in that: The distance between the end of the infrared component (7) and the center of the spherical lens (3) is 23.08 mm.

3. A liquid concentration sensor according to claim 1, wherein: The distance between the end of the camera assembly (8) and the center of the spherical lens (3) is 15mm.

4. A liquid concentration sensor according to claim 1, wherein: The infrared component (7) is located at the end of the outer side of the incident channel (5).

5. A liquid concentration sensor according to claim 4, wherein: The infrared assembly (7) includes an infrared cover plate (71) that covers and seals the outer end of the incident channel (5), and an infrared emitting tube (72) is provided on the inner side of the infrared cover plate (71).

6. A liquid concentration sensor according to claim 5, wherein: The infrared emitting tube (72) is equipped with a 3mm diameter LED bead.

7. A liquid concentration sensor according to claim 1, wherein: The detection camera assembly (8) is located at the end of the outer end of the emission channel (6).

8. A liquid concentration sensor according to claim 7, wherein: The detection camera assembly (8) includes a camera cover (81) that covers and seals the outer end of the emission channel (6), and a detection camera (82) embedded in the emission channel (6) is provided on the inner side of the camera cover (81).

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