Transparent solution concentration measuring device

Abstract

The utility model discloses a transparent solution concentration measuring device, which relates to the technical field of optical measuring instruments, aims to solve the technical problem that the measurement accuracy is influenced by the precipitation of a solution with a fixed height of a current light source, and comprises a rotary driver arranged on a working table and a driving structure arranged on the working table, the output end of the rotation driver is fixedly connected with a rotating plate, and the top end of the rotating plate is fixedly connected with a transparent container. The rotary driver drives the transparent container to rotate, different incident angles are formed between the outer wall of the transparent container and the laser emitted by the laser emitter, the total reflection condition is recorded through the camera shooting device, the concentration of the solution is judged, and the laser emitter is driven by the driving structure to move vertically during measurement. Therefore, different heights of the transparent container are measured, the average value of the transparent container is obtained, measurement errors caused by solution precipitation are avoided, and measurement is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of optical measuring instruments, and more specifically to a transparent solution concentration measuring device. Background Art

[0002] The principle of total internal reflection (TIR) ​​for transparent solution concentration measurement is based on the phenomenon of total internal reflection that occurs when light travels from a denser medium to a less dense medium. When the angle of incidence exceeds a certain critical angle (the critical angle), the refracted light disappears completely, leaving only the reflected light. This phenomenon is called total internal reflection. By varying the angle of incidence and measuring the angle at which the solution achieves total internal reflection, the solution's concentration can be determined.

[0003] However, existing concentration measurement devices often use a fixed light source height, always measuring the top or bottom of the container. Solution sedimentation can cause the incident angle at which total reflection occurs to change, affecting the accuracy of the measurement. To address this issue, we propose a device for measuring the concentration of transparent solutions. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the existing technology, meet the actual needs, and provide a transparent solution concentration measuring device to solve the technical problem that the current light source has a high fixed solution precipitation that affects the measurement accuracy.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a transparent solution concentration measuring device, comprising a rotary driver installed on a workbench and a driving structure installed on the workbench, the output end of the rotary driver is fixedly connected to a rotating plate, the top of the rotating plate is fixedly connected to a transparent container, the driving structure comprises a frame, a driving motor, a screw, a mounting bracket, a mounting frame and a guide rod, the driving motor is arranged on the inner side of the frame, the output end of the driving motor is fixedly connected to the screw, the screw is engaged with the internal thread opened in the middle of the mounting bracket through an external thread, the front end of the mounting bracket is fixedly connected to the mounting frame, the two sides of the mounting bracket are respectively slidably connected to two guide rods, and the two guide rods are fixedly connected to the inner wall of the frame, a laser emitter is fixedly connected in the mounting frame, and a camera device is provided on both sides of the transparent container.

[0006] Preferably, the transparent container is a trough structure.

[0007] Preferably, the transparent container is provided on one side of the top of the rotating plate, and when the long side of the transparent container is perpendicular to the transverse longitudinal section of the rotating plate, the long side of the transparent container coincides with the laser of the laser emitter.

[0008] Preferably, one long side of the transparent container is set to a plane, and the upper and lower parts of the other long side of the transparent container are provided with a first inclined surface and a second inclined surface, and the lower ends of the first inclined surface and the second inclined surface coincide with each other, and the angle formed by the first inclined surface and the long side is 30°, and the angle formed by the second inclined surface and the long side is 60°.

[0009] Preferably, the bottom ends of the two camera devices are fixedly connected to a ring, and the ring is rotatably connected to the top of the workbench. The ring and the rotating plate rotate along the same axis, and the camera device is located outside the transparent container during rotation.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. The utility model drives the transparent container to rotate through a rotary drive, and different incident angles are formed between the outer wall of the transparent container and the laser emitted by the laser emitter. The total reflection is recorded by a camera device to judge the concentration of the solution. During measurement, the laser emitter is driven vertically by the driving structure to measure different heights of the transparent container and obtain the average value, thereby avoiding measurement errors caused by solution precipitation and making the measurement more accurate.

[0012] 2. When defining the approximate critical angle of the solution, the utility model rotates the transparent container so that the long side with the first inclined surface and the second inclined surface is perpendicular to the laser emitter. By adjusting the height of the laser emitter, the laser emitter is respectively projected onto the first inclined surface and the second inclined surface, forming two different incident angles. The incident angle is divided into three ranges by the two incident angles. By determining whether total reflection occurs, the critical angle is quickly determined to be within the range, thereby improving measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the drive structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the utility model without the rotating plate;

[0016] Figure 4 This is a schematic structural diagram of the inclined side of the transparent container of the utility model;

[0017] Figure 5 It is a side view of the first inclined surface and the second inclined surface of the utility model;

[0018] Figure 6 This is a schematic diagram of a usage state of the utility model.

[0019] Explanation of the numbers in the figure: 1. Rotary drive; 101. Rotating plate; 2. Transparent container; 201. First inclined plane; 202. Second inclined plane; 3. Driving structure; 301. Frame; 302. Driving motor; 303. Screw; 304. Mounting bracket; 305. Mounting frame; 306. Guide rod; 4. Laser emitter; 5. Camera equipment; 501. Ring. DETAILED DESCRIPTION

[0020] like Figures 1 to 6 As shown, the present invention relates to a transparent solution concentration measuring device, comprising a rotary driver 1 mounted on a workbench and a drive structure 3 mounted on the workbench. The output end of the rotary driver 1 is connected to a rotating plate 101 by bolts, and the top of the rotating plate 101 is connected to a transparent container 2 by bolts. The drive structure 3 includes a frame 301, a drive motor 302, a screw 303, a mounting bracket 304, a mounting frame 305 and a guide rod 306. The drive motor 302 is arranged on the inner side of the frame 301. The output end of the drive motor 302 is connected to the screw 303 via a coupling. The screw 303 is meshed with an internal thread provided in the middle of the mounting bracket 304 via an external thread. The front end of the mounting bracket 304 is bolted to the mounting frame 305. The mounting bracket 304 is slidably connected to two guide rods 306 on either side, and both guide rods 306 are threadedly connected to the inner wall of the frame. A laser emitter 4 is inserted and connected to the mounting frame 305. Cameras 5 are provided on both sides of the transparent container 2. The present invention drives the transparent container 2 to rotate via a rotary drive 1. Different angles of incidence are formed between the outer wall of the transparent container 2 and the laser light emitted by the laser emitter 4. The camera 5 records the total reflection and determines the concentration of the solution. During measurement, the drive structure 3 drives the laser emitter 4 to move vertically, thereby measuring different heights of the transparent container 2 and obtaining an average value. This avoids measurement errors caused by solution sedimentation and provides more accurate measurements.

[0021] Furthermore, the transparent container 2 is a trough structure, and is disposed on one side of the top of the rotating plate 101. By disposing the transparent container 2 with a trough structure, the reflection angle of the laser emitted by the laser emitter 4 to the outer side of the transparent container 2 changes stably.

[0022] Furthermore, when the long side of the transparent container 2 is perpendicular to the transverse longitudinal section of the rotating plate 101, the long side of the transparent container 2 coincides with the laser beam of the laser emitter 4. By aligning the long side of the transparent container 2 with the laser beam of the laser emitter 4, the incident angle of the laser emitter 4 can vary between 0° and 90° as the transparent container 2 rotates, ensuring that the device can measure the solution at a full range of incident angles.

[0023] In the embodiment of the present invention, in order to enable the device to quickly define the approximate critical angle of the solution and increase the efficiency of the measurement, as shown in FIG. Figure 4 and Figure 5 The present invention discloses the specific shape of the long side of a transparent container 2. One long side of the transparent container 2 is configured as a plane, and the upper and lower portions of the other long side of the transparent container 2 are provided with a first inclined surface 201 and a second inclined surface 202. The lower ends of the first inclined surface 201 and the second inclined surface 202 overlap. The angle formed between the first inclined surface 201 and the long side is 30°, and the angle formed between the second inclined surface 202 and the long side is 60°. When defining the approximate critical angle of a solution, the present invention rotates the transparent container 2 so that the long side provided with the first inclined surface 201 and the second inclined surface 202 is perpendicular to the laser emitter 4. By adjusting the height of the laser emitter 4, the laser emitter 4 is directed onto the first inclined surface 201 and the second inclined surface 202, respectively, forming two different incident angles. The incident angle is divided into three ranges by the two incident angles. The critical angle is quickly determined within which range based on whether total reflection occurs, thereby improving measurement efficiency.

[0024] As another embodiment of the present invention, in order to enable the camera device 5 to obtain a better field of view and reduce the influence of the position change of the camera device 5, as shown in FIG. Figure 3 The utility model discloses a connection structure between the camera device 5 and the workbench, the bottom ends of the two camera devices 5 are connected with a circular ring 501 by bolts, and the circular ring 501 is rotatably connected to the top of the workbench, the circular ring 501 and the rotating plate 101 rotate along the same axis, and the camera device 5 is located outside the transparent container 2 during the rotation process; the utility model rotates the circular ring 501 and the rotating plate 101 on the same axis, so that the camera device 5 can rotate outside the rotating track of the transparent container 2, so that the photographic device can rotate with the transparent container 2, thereby ensuring the observation effect.

[0025] Working principle: This embodiment provides a transparent solution concentration measuring device, in which a rotary drive 1 drives a rotating plate 101 to rotate, and the rotating plate 101 drives a transparent container 2 to rotate, so that the plane of the transparent container 2 faces the laser emitter 4, and the laser emitter 4 is turned on, and the laser emitter 4 emits a laser, and the laser forms a steadily changing incident angle with the long side of the transparent container 2. The camera device 5 records the occurrence of total reflection. When total reflection occurs, the critical angle of the solution is obtained according to the incident angle, thereby determining the concentration of the solution. At the same time, the rotary drive 1 stops working, and the drive motor 302 works to drive the screw 303 to rotate. The screw 303 drives the mounting bracket 304 to slide on the guide rod 306, thereby driving the laser emitter 4 to move vertically. The laser emitter 4 measures different heights of the angle, observes the total reflection at different heights, and avoids precipitation errors.

[0026] When the detection efficiency needs to be improved, the rotary drive 1 drives the rotating plate 101 to rotate, and the rotating plate 101 drives the transparent container 2 to rotate, so that the long side of the transparent container 2 is perpendicular to the laser emitter 4, and at the same time the first inclined surface 201 and the second inclined surface 202 face the laser emitter 4, the laser emitter 4 is turned on, and the laser emitter 4 emits laser light onto the first inclined surface 201 or the second inclined surface 202, and then the drive motor 302 drives the screw 303 to rotate, and the screw 303 drives the mounting bracket 304 to slide on the guide rod 306, thereby driving the laser emitter 4 to move vertically to the height of another inclined surface, and the laser emitter 4 emits laser light onto the other inclined surface, forming three ranges by the incident angles of the laser light and the two inclined surfaces.

[0027] When the laser irradiates the first inclined surface 201 at an incident angle of 30° and total reflection occurs, it is determined that the critical angle is less than 30°;

[0028] When the laser irradiates the second inclined surface 202 at an incident angle of 60° and total reflection occurs, and when the laser irradiates the first inclined surface 201 at an incident angle of 30° and no total reflection occurs, the critical angle is determined to be between 30° and 60°.

[0029] When the laser irradiates the first inclined surface 201 and the second inclined surface 202 at an incident angle of 30° and 60°, no total reflection occurs, and the critical angle is determined to be between 60° and 90°.

[0030] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A transparent solution concentration measuring device, characterized in that: The invention comprises a rotary driver (1) mounted on a workbench and a driving structure (3) mounted on the workbench, wherein the output end of the rotary driver (1) is fixedly connected to a rotating plate (101), the top end of the rotating plate (101) is fixedly connected to a transparent container (2), the driving structure (3) comprises a frame (301), a driving motor (302), a screw (303), a mounting bracket (304), a mounting frame (305) and a guide rod (306), the driving motor (302) is arranged on the inner side of the frame (301), and the driving motor (302) is fixedly connected to the transparent container (2). ) is fixedly connected to a screw rod (303), the screw rod (303) is meshed with an internal thread provided in the middle of a mounting bracket (304) through an external thread, the front end of the mounting bracket (304) is fixedly connected to a mounting frame (305), both sides of the mounting bracket (304) are slidably connected to two guide rods (306), and both guide rods (306) are fixedly connected to the inner wall of the frame, a laser emitter (4) is fixedly connected in the mounting frame (305), and a camera device (5) is provided on both sides of the transparent container (2).

2. A transparent solution concentration measuring device according to claim 1, characterized in that: The transparent container (2) is a trough structure.

3. A transparent solution concentration measuring device according to claim 2, characterized in that: The transparent container (2) is arranged on one side of the top end of the rotating plate (101), and when the long side of the transparent container (2) is perpendicular to the transverse longitudinal section of the rotating plate (101), the long side of the transparent container (2) coincides with the laser of the laser emitter (4).

4. A transparent solution concentration measuring device according to claim 2, characterized in that: One long side surface of the transparent container (2) is set as a plane, and the upper part and lower part of the other long side surface of the transparent container (2) are provided with a first inclined surface (201) and a second inclined surface (202), and the lower ends of the first inclined surface (201) and the second inclined surface (202) coincide with each other, and the angle formed by the first inclined surface (201) and the long side surface is 30 degrees, and the angle formed by the second inclined surface (202) and the long side surface is 60 degrees.

5. The transparent solution concentration measuring device according to claim 1, characterized in that: The bottom ends of the two camera devices (5) are fixedly connected to a circular ring (501), and the circular ring (501) is rotatably connected to the top of the workbench. The circular ring (501) and the rotating plate (101) rotate along the same axis, and the camera device (5) is located outside the transparent container (2) during the rotation process.

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