Dark processing device for spectral measurement

Abstract

The dark processing device comprises a dark box with an opening in the bottom, the dark box comprises a first cover body and a second cover body, the second cover body is sleeved with the first cover body from top to bottom, a shading layer is arranged between the first cover body and the second cover body, and a turned edge is arranged at the bottom of the second cover body; a panel is arranged at the bottom of the cassette, a rotatable screw rod is arranged on the panel, a screw hole is formed in the top surface of the turned-over edge, the turned-over edge is arranged on the screw rod in a sleeving manner, and a driving assembly connected with the screw rod is arranged at the bottom of the panel; the panel is further provided with two detachable fixing buckles, and the two sides of the cassette are provided with clamping openings for containing the detachable fixing buckles respectively. According to the device, the condition of light leakage in the dark processing measurement process can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of infrared spectrum measurement, in particular to a dark processing device for spectrum measurement. BACKGROUND

[0002] Spectrum is an important means for people to understand the composition of matter, and nearly 1 / 5 of the known elements are discovered through spectrum analysis.

[0003] Spectrometer is a device for spectrum measurement and spectrum analysis of matter, and dark processing measurement is a technology for improving the accuracy of spectrum measurement, which is to collect dark signals before formal measurement, that is, to record the gray value information of each pixel point of the sensor without light source irradiation. During the measurement process, factors such as the movement of the dark processing support box, the disengagement of the left and right connecting lines of the measurement head from the small opening, and the incomplete covering of the dark processing black cloth may cause light leakage, thereby affecting the measurement effect. CONTENT OF THE INVENTION

[0004] The technical problem to be solved by the present application is to provide a dark processing device for spectrum measurement, which can reduce the light leakage during the dark processing measurement.

[0005] To solve the above technical problems, the following technical solutions are adopted in the present application:

[0006] A dark processing device for spectrum measurement, comprising a dark box with an open bottom, which comprises a first cover body and a second cover body, the first cover body is sleeved outside the second cover body from top to bottom, an optical shielding layer is arranged between the first cover body and the second cover body, and a flange is arranged at the bottom of the second cover body; a panel is arranged at the bottom of the dark box, a rotatable screw rod is arranged on the panel, a screw hole is formed in the top surface of the flange and the flange is sleeved on the screw rod, a driving assembly is arranged at the bottom of the panel and connected with the screw rod; two detachable fixing buckles are arranged on the panel, and a bayonet hole for placing the detachable fixing buckles is arranged on each side of the dark box.

[0007] In order to provide a dark environment for the measurement head to collect dark signals, in some embodiments, the bottom edge of the first cover body is higher than the top surface of the flange, forming an opening.

[0008] According to the further development of the above-mentioned scheme, the optical shielding layer extends from the opening and covers the flange.

[0009] In order to prevent the first cover body from falling out and the optical shielding layer from displacing, in some embodiments, a plurality of screws are arranged on the dark box.

[0010] Compared with the prior art, the present application at least realizes the following beneficial effects: the film cassette of the dark processing device is driven by a screw rod, is opened and closed through a fixed movement track, and is uniformly moved to the same position each time the film cassette is closed, thereby reducing the light leakage caused by different personnel operations to make the film cassette in different positions; the panel is provided with a detachable fixing buckle, the two connecting lines of the measuring head are fixed in advance through the fixing buckle, the connecting lines do not need to be repeatedly adjusted when the film cassette is closed, the connecting lines are avoided from being clamped at the bottom of the film cassette, and the light leakage caused by the gap is avoided; the film cassette is provided with a light shielding layer, the flange at the bottom of the second cover is covered by the light shielding layer, the entire inside of the film cassette forms a dark and closed space, and the movement of the film cassette is limited by the screw rod, thereby avoiding the light leakage. BRIEF DESCRIPTION OF DRAWINGS

[0011] One or more embodiments of the present application will now be described, by way of example only, with reference to the accompanying drawings:

[0012] Figure 1 A perspective view of a dark processing device according to an embodiment of the present application;

[0013] Figure 2 A perspective view of a film cassette of a dark processing device according to an embodiment of the present application being opened; Figure 1 A perspective view of a film cassette of a dark processing device according to an embodiment of the present application being opened;

[0014] Figure 3 A front view of a dark processing device according to an embodiment of the present application;

[0015] Figure 4 An exploded view of a film cassette of a dark processing device according to an embodiment of the present application;

[0016] Figure 5 A side perspective view of a detachable fixing buckle of a dark processing device according to an embodiment of the present application.

[0017] Reference signs in the drawings are as follows: 1, panel; 2, screw rod; 3, nut; 4, first cover; 41, first clamping hole; 5, screw; 6, connecting line; 7, flange; 8, second cover; 81, second clamping hole; 9, motor; 10, motor fixing buckle; 11, panel fixing part; 12, detachable fixing buckle; 121, fixed part; 1211, first placing groove; 1212, vertical groove; 1213, horizontal groove; 122, movable part; 1221, second placing groove; 1222, vertical rod; 1223, inverted hook; 13, rotating wheel; 14, transmission belt; 15, rotating wheel fixing buckle; 16, rotating shaft. DETAILED DESCRIPTION

[0018] The application will be described in greater detail with reference to the exemplary embodiments illustrated in the drawings. It should be understood that the application can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be complete and fully convey the application's concept to those skilled in the art.

[0019] In the description of the present application, it should be understood that the terms "center", "transverse", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0020] The present application is aimed at the defect that light leakage may occur in the dark treatment measurement process in the prior art. After careful analysis, the inventors found that the reasons for the above problems are as follows: firstly, the dark treatment support box may move position, because each sample needs to be measured manually, and the current support box is generally wrapped with a closed paper box and a layer of black cloth outside to cover the measurement head. In this link, even the same operator will offset a certain position when picking up or covering the support box, and secondly, touching the support box during operation will also cause it to shift. In these processes, light may enter the support box; secondly, the left and right ends of the measurement head are respectively connected with connecting lines, and when covering the support box, the connecting lines may be pressed on the bottom of the support box, or the connecting lines may be pulled out of the opening on the bottom of the support box, thereby producing a gap and allowing light to enter the support box; finally, the black cloth wrapped around the support box usually does not have a corresponding structure to fix it on the support box, so the black cloth may slide on the support box, causing the black cloth on one side to not completely cover the support box, resulting in light leakage. When the light leakage point is in the visual blind area of the measurement personnel, the light leakage point is easy to affect the measurement effect and quality. Based on the above analysis, the inventors have improved the structure of the dark treatment measurement.

[0021] As Figures 1-5As shown, in one embodiment of the dark processing device for spectral measurement of the application, the device comprises an open-bottomed dark box, the dark box comprises a first cover 4 and a second cover 8, the first cover 4 is sleeved outside the second cover 8 from top to bottom, and a light shielding layer is arranged between the first cover 4 and the second cover 8. The light shielding layer can be a piece of rectangular black cloth, the light shielding layer is in contact with the inner wall of the first cover 4 and the outer wall of the second cover 8, and a certain pressure is generated to fix the first cover 4 outside the second cover 8. The bottom of the second cover 8 is provided with a flange 7. The bottom of the dark box is provided with a panel 1, a through hole is formed in the panel 1, a vertical and rotatable screw rod 2 is arranged in the through hole, a screw hole is formed in the top surface of the flange 7, the screw rod 2 is sleeved on the screw hole, the bottom of the panel 1 is provided with a driving assembly connected with the screw rod 2, and the screw rod 2 is reversely rotated to drive the dark box to rise or fall; the middle left side and the middle right side of the top of the panel 1 are respectively provided with a detachable fixing buckle 12, and the two sides of the dark box are respectively provided with a bayonet for placing the detachable fixing buckle 12. Specifically, the bottom of the first cover 4 is provided with a first bayonet 41 on the left and right sides, and the left and right sides of the second cover 8 combined with the flange 7 are provided with a second bayonet 81.

[0022] The bottom edge of the first cover 4 is higher than the top surface of the flange 7, forming an opening, so that the light shielding layer can be stretched out of the opening and cover the flange 7, and the gap between the dark box and the panel 1 can be completely covered.

[0023] The first cover 4 of the dark box is fixed by generating friction on the light shielding layer, but the friction generated by the cloth material is limited. Therefore, in order to prevent the first cover 4 from being separated from the second cover 8 and the light shielding layer from moving in the dark box, a plurality of coaxial screw holes are formed in the top and side surfaces of the first cover 4 and the second cover 8 of the dark box, and a plurality of screw nails 5 are arranged in the coaxial screw holes. The screw nails 5 can fix the first cover 4 outside the second cover 8, and the screw nails 5 can also fix the light shielding layer through the light shielding layer.

[0024] In order to make the dark box rise and fall stably, four screw rods 2 are arranged on the panel 1 in the form of a quadrilateral with the front two and the rear two. In order to facilitate distinction, the front two screw rods 2 are referred to as front row screw rods 2, and the rear two screw rods 2 are referred to as rear row screw rods 2. The number of through holes formed in the panel 1 matches the number of screw rods 2. The screw holes in the flange 7 also match the number of screw rods 2, and are formed at the four corners of the flange 7.

[0025] The driving assembly is used for controlling the rotation of the front and rear rows of screw rods 2, and comprises rotating wheels 13, a transmission belt 14 and motors 9. The number of rotating wheels 13 matches the number of screw rods 2, and the end faces of the rotating wheels 13 are fixedly connected to the bottoms of the screw rods 2. The transmission belt 14 is arranged transversely and is sleeved on the bottom rotating wheels 13 of the front and rear rows of screw rods 2. The motors 9 are two, and are respectively fixedly connected to the bottom shafts of any rotating wheel 13 at the bottom of the front and rear rows of screw rods 2. The fixed connection mentioned in this paragraph includes but is not limited to screw connection and welding.

[0026] The motor 9 drives the rotating wheels 13 and the screw rods 2 above the rotating wheels 13 to rotate. The rotating wheels 13 drive the transmission belt 14 to rotate, so that the rotating wheels 13 and the screw rods 2 above the rotating wheels 13 on the other side connected with the transmission belt 14 rotate.

[0027] In addition, outside the motor 9, a motor fixing buckle 10 for limiting the downward movement of the motor 9 is arranged. The motor fixing buckle 10 is inverted U-shaped and is arranged outside the motor 9, and is connected to the panel 1 by screwing or welding. Outside the rotating wheel 13 not connected with the motor 9, a rotating wheel fixing buckle 15 for limiting the downward movement of the rotating wheel 13 is arranged. The rotating wheel fixing buckle 15 is also inverted U-shaped and is arranged outside the motor 9, and is connected to the panel 1 by screwing or welding. The bottom of the rotating wheel fixing buckle 15 is provided with a through hole, the bottom of the rotating wheel 13 is connected with a rotating shaft 16 provided with a shoulder, and the rotating shaft 16 is arranged in the through hole and supports the rotating wheel 13.

[0028] The detachable fixing buckle 12 is used for providing a space for the connecting wires 6 on the left and right sides of the measuring head and fixing the connecting wires 6 to prevent swinging. The detachable fixing buckle 12 comprises a fixed part 121 and a movable part 122. The fixed part 121 is connected to the panel 1, and the movable part 122 is arranged above the fixed part 121.

[0029] As shown in Figure 5 the fixed part 121 is a rectangular block, the top of the fixed part 121 is provided with an arc-shaped first placing groove 1211, the left and right sides of the first placing groove 1211 and the top surface of the fixed block are respectively provided with downward extending vertical grooves 1212, the left and right end faces of the fixed part 121 are respectively provided with horizontal grooves 1213, the vertical grooves 1212 and the horizontal grooves 1213 are connected and communicated, and a communication groove with a bend is formed.

[0030] The movable part 122 is also a rectangular block, the top surface of which is arc-shaped to match the bayonet of the bottom of the magazine, the bottom surface of the movable part 122 is provided with an arc-shaped second placing groove 1221, the left and right sides of the second placing groove 1221 and the bottom surface of the movable part 122 are respectively provided with downward extending vertical rods 1222, the bottom of the vertical rod 1222 is provided with an outward triangular hook 1223, the vertical rod 1222 is correspondingly arranged in the vertical groove 1212, and the hook 1223 is correspondingly arranged in the horizontal groove 1213. The connecting line 6 is placed in the first placing groove 1211 and the second placing groove 1221, the movable part 122 is installed from top to bottom, so that the vertical rod 1222 enters the vertical groove 1212, and finally the top surface of the hook 1223 is in contact with the top surface of the inner wall of the horizontal groove 1213 to limit the ejection of the movable part 122. When disassembling the movable part 122, the two hooks 1223 are pinched to move towards the middle of the fixed part 121, and when the top surface of the hook 1223 is not in contact with the top surface of the inner wall of the horizontal groove 1213, the movable part 122 can be taken out upward.

[0031] The panel 1 is placed on the corresponding support and fixed by using bolts or fixing frames, and can be used; in addition, four Z-shaped panel fixing parts 11 arranged in a square shape can be optionally installed at the bottom of the panel 1, and through holes are formed at the bottom of the panel fixing part 11, so that the panel 1 can be supported by the panel fixing part 11 when there is no support, and the bottom of the panel fixing part 11 and the operating table surface are clamped together by using a fixing frame for fixation.

[0032] In addition, a nut 3 is screwed on the top of the screw rod 2 to place the magazine out of the screw rod 2.

[0033] For the driving of the motor 9, a commonly used controller such as an STM32 single-chip microcomputer can be connected.

[0034] When using the device, the screw rod 2 is driven to rotate by the motor 9, so that the magazine rises, and then the measuring head is arranged at the middle of the panel, two connecting lines 6 are respectively installed on the left and right sides of the measuring head, and the two connecting lines 6 are fixed in the detachable fixing buckle 12, then the screw rod 2 is driven to rotate by the motor 9, so that the magazine descends and covers the measuring head, and the light shielding layer extending out of the opening between the first cover 4 and the second cover 8 completely covers the flange 7 at the bottom of the second cover 8 and the detachable fixing buckle 12, so as to avoid light leakage. In the whole process, the magazine does not displace towards the periphery, and the connecting line 6 is also fixed, so that no gap is generated between the magazine and the panel 1, and the measurement quality is ensured.

[0035] It should be understood that all the above embodiments are exemplary but not limiting, and various modifications or variations of the specific embodiments described above made by those skilled in the art under the concept of the present application shall be within the protection scope of the present application.

Claims

1. A dark processing device for spectral measurements, characterized by, The dark box including the bottom opening comprises a first cover and a second cover, the first cover is sleeved outside the second cover from top to bottom, a light shielding layer is arranged between the first cover and the second cover, and the bottom of the second cover is provided with a flange; the bottom of the dark box is provided with a panel, the panel is provided with a rotatable screw rod, the top surface of the flange is provided with a screw hole and is sleeved on the screw rod, the bottom of the panel is provided with a driving assembly connected with the screw rod; the panel is further provided with two detachable fixing buckles, and the two sides of the dark box are respectively provided with a bayonet for placing the detachable fixing buckle.

2. The apparatus of claim 1, wherein, The bottom edge of the first cover is higher than the top surface of the flange, forming an opening.

3. The apparatus of claim 2, wherein, The light shielding layer extends from the opening and covers the flange.

4. The device according to any of claims 1-3, characterized in that A plurality of screws are arranged on the dark box.

5. The apparatus of claim 1, wherein, The screw rod is four, arranged in a square shape; the screw hole is arranged at the four corners of the flange.

6. The apparatus of claim 5, wherein, The driving assembly comprises a rotating wheel, a transmission belt and a motor, the rotating wheel is connected with the bottom of the screw rod, the transmission belt is transversely arranged and sleeved on the rotating wheel, and the motor is connected with the shaft of any rotating wheel.

7. The apparatus of claim 1, wherein, The detachable fixing buckle comprises a fixed part and a movable part, the fixed part is connected with the panel, and the movable part is arranged above the fixed part.

8. The apparatus of claim 7, wherein, The top of the fixed part is provided with a first placing groove, the left and right sides of the first placing groove are respectively provided with vertical grooves, the left and right end faces of the fixed part are respectively provided with horizontal grooves, and the vertical grooves and the horizontal grooves are communicated.

9. The apparatus of claim 8, wherein, The bottom surface of the movable part is provided with a second placing groove, the left and right sides of the second placing groove are respectively provided with vertical rods, the bottom of the vertical rod is provided with a barb, the vertical rod is arranged in the vertical groove, and the barb is arranged in the horizontal groove.

10. The apparatus of claim 9, wherein, The top surface of the barb is in contact with the top surface of the inner wall of the vertical groove.

Images