Solar photometer measuring device

Abstract

The invention discloses a sun photometer measuring device which comprises an optical head shell and a light window base detachably installed at the end of the optical head shell, light window glass is embedded in the light window base, and a field diaphragm is embedded in the optical head shell. The surface of the field diaphragm is provided with a plurality of circumferentially distributed measurement channel diaphragm holes, the central position is provided with a four-quadrant diaphragm hole, and the surface of the field diaphragm is also provided with a plurality of position holes. According to the invention, the inclination angle of the optical channel of the four-quadrant diaphragm cylinder is determined by observing the position of a light spot penetrating through the reference hole on the indicator board, so that the relative parallel adjustment of the four-quadrant optical axis and the optical axis of the peripheral measurement channel is completed; as the four-quadrant cylinder support is a floating spring supporting device, relative inclination adjustment in any direction can be completed by adjusting the relative tightness of three springs, and the relative parallelism of a four-quadrant optical axis and a measurement channel optical axis can be accurately adjusted to achieve absolute accurate parallelism.

Description

Technical Field

[0001] The invention relates to the technical field of photometers, in particular to a sun photometer measuring device. Background Art

[0002] With the continuous development of space exploration equipment technology and the continuous improvement of system accuracy, the demand for satellite site calibration requires measuring instruments to be able to automatically detect site data information unattended for a long time, replacing manual acquisition of site data information and improving the efficiency and accuracy of data collection.

[0003] For a long time, in order to obtain the luminous characteristics of the sun, understand the propagation law of light in the atmosphere, and use special measurement technology to detect atmospheric components, people have conducted a lot of experiments and theoretical research on sunlight and sky light. Due to the limitations of traditional experimental methods, it is difficult to compare spectral data between different regions, and to compare data measured in different years in the same region. It is necessary to automatically collect outdoor atmospheric spectral data remotely and share it to establish a database, which is of great significance for environmental detection and climate change tracking research. Therefore, it is necessary to develop a fully automatic sun photometer for spectral measurement.

[0004] The optical head of the sun photometer is integrated with a four-phenomenon detector device, which cooperates with the turntable instrument to achieve accurate tracking of the sun. Due to the errors in the production and assembly process of the optical head of the sun photometer, the peripheral circular distribution of the light measurement channel is not parallel to the optical path channel used for the four quadrants, which leads to inaccurate measurement data; the traditional adjustment method adjusts the four-quadrant photocurrent coefficient obtained by the lower computer to correct the adjustment. Due to the randomness of the system error, this method is more troublesome, has low stability and poor reliability. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a sun photometer measuring device, which solves the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a sunlight meter measuring device, comprising an optical head housing, a light window base detachably mounted on the end of the optical head housing, a light window glass embedded in the light window base, a field of view aperture piece embedded in the optical head housing, a surface of the field of view aperture piece provided with a plurality of circumferentially distributed measurement channel aperture holes, and a four-quadrant aperture hole opened at the center, a surface of the field of view aperture piece also provided with a plurality of position holes, a four-quadrant aperture tube provided inside the optical head housing, a four-quadrant detector corresponding to the position of the four-quadrant aperture hole fixedly mounted inside the four-quadrant aperture tube, a light blocking wheel bracket fixedly connected to the optical head housing, a four-quadrant aperture bracket fixedly connected to the light blocking wheel bracket, and three groups of adjustment components provided between the end of the four-quadrant aperture bracket and the four-quadrant aperture tube.

[0009] Preferably, the adjustment assembly includes a screw and a spring sleeved on the outside of the screw, a first supporting hole is formed at the end of the four-quadrant aperture tube, a second supporting hole is formed at the end of the four-quadrant aperture bracket, the spring is arranged between the first supporting hole and the second supporting hole, a screw hole is formed at the bottom of the second supporting hole, and the end of the screw passes through the first supporting hole and the second supporting hole in sequence and is threadedly inserted into the screw hole.

[0010] Preferably, an aperture plug is provided inside the position hole.

[0011] Preferably, a reference hole is opened at one end of the optical head housing, and an indicator plate corresponding to the position of the reference hole is fixedly installed on the outer wall of the optical head housing. The indicator plate is fixed on an indicator fixing column, and the lower end of the indicator fixing column is inserted into the interior of the rear housing.

[0012] Preferably, a de-stirring aperture plate is embedded on the top of the four-quadrant aperture bracket, and a plurality of secondary aperture holes are opened on the de-stirring aperture plate, and the positions of the secondary aperture holes correspond to the aperture holes of the measuring channel.

[0013] Preferably, it also includes a rotating platform, and the optical head housing can be rotatably disposed on the rotating platform.

[0014] Preferably, the end of the optical head shell is fixedly connected to the rear shell, the optical main body unit and the control panel are fixedly installed inside the rear shell, the optical main body unit has a temperature sensor inside, a Peltier fixing plate is fixed on the optical main body unit, a Peltier is fixedly installed on the Peltier fixing plate, the Peltier is in contact with the optical main body unit and the rear shell, a protective shell is arranged outside the optical main body unit, and thermal insulation cotton 1 and thermal insulation cotton 2 are arranged between the rear shell and the optical main body unit.

[0015] Preferably, a shell back cover is fixedly mounted on the end of the rear shell, a sealing ring three and a sealing gasket three are arranged between the shell back cover and the rear shell, and an aviation sealing plug is fixedly mounted on the end of the shell back cover.

[0016] Preferably, a second sealing ring and a second sealing gasket are provided between the optical head housing and the rear housing.

[0017] A sealing gasket 1 and a sealing ring 1 are arranged between the light window base and the optical head housing.

[0018] (III) Beneficial effects

[0019] The present invention provides a sun photometer measuring device, which has the following beneficial effects:

[0020] 1. In the present invention, the position of the light spot passing through the reference hole on the indicator plate is observed to determine the inclination angle of the optical channel of the four-quadrant aperture tube, and then the relative parallel adjustment of the optical axis of the four-quadrant optical axis and the optical axis of the peripheral measurement channel is completed; because the four-quadrant tube bracket is a floating spring support device, the relative inclination in any direction can be adjusted by adjusting the relative tightness of the three springs, and then the relative parallelism of the four-quadrant optical axis and the optical axis of the measurement channel can be accurately adjusted to achieve absolute precise parallelism. The lower computer analyzes the angle of inclination with the sun through the current difference of the four quadrants of the four-quadrant detector, and then adjusts the relative movement of the horizontal rotation angle and the pitch angle of the two-position turntable of the sun photometer through the motor, so as to realize the precise alignment of the four-quadrant detector with the sun and complete the precise tracking of the sun photometer. By adjusting the relative parallelism of the four-quadrant optical axis and the optical axis of the measurement channel, after parallelism, the accuracy of the channel data measurement is improved. This mechanical floating and adjustable four-quadrant device is simple, reliable and easy to operate, greatly improves the assembly and debugging efficiency of the equipment, and also provides convenience for later maintenance.

[0021] 2. In the present invention, the temperature sensor inside the optical main unit obtains the internal temperature information in real time, feeds it back to the control board, compares it with the constant temperature set by the system, adjusts the refrigeration power, completes the closed-loop PID regulation control, and realizes the constant temperature. The constant temperature control of the internal environment of the optical main body is realized by Peltier, the accurate measurement of the detector is realized, and the influence of temperature difference drift on the spectrum acquisition value is reduced. The rear shell has a heat dissipation groove structure, which increases the area of ​​heat exchange with the air and improves the heat conduction efficiency. It prevents the temperature from being too high in summer, which affects the performance and service life of components, and also prevents the temperature from being too low, which may cause the instability of the performance of the component materials, thereby affecting the accuracy of the measured data.

[0022] 3. In the present invention, double sealing details of sealing ring and sealing pad are made at each joint surface, which improves the protection sealing level of the product and provides a sealed and dry measurement condition isolated from the outside world for the instrument. It eliminates condensation inside the equipment caused by excessive humidity, causing safety problems such as short circuit; static electricity caused by low humidity may cause potential damage to the product; excessive humidity will also affect the normal operation of the detector, and even cause damage to components, affecting its detection speed, accuracy and stability, and shortening its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an assembly structure diagram of a sun photometer measuring device proposed by the present invention;

[0024] Figure 2 A structural diagram of an optical head housing of a sun photometer measuring device proposed by the present invention;

[0025] Figure 3 for Figure 2 A-A cross-sectional structural diagram;

[0026] Figure 4 This is a partial structural diagram of a sun photometer measuring device proposed in the present invention.

[0027] In the figure: 1, optical head housing; 2, field aperture; 201, four-quadrant aperture hole; 202, measuring channel aperture hole; 203, position hole; 3, light window glass; 4, aperture plug; 5, four-quadrant aperture tube; 51, first support hole; 6, four-quadrant detector; 7, spring; 8, screw; 9, four-quadrant aperture bracket; 91, second support hole; 10, indicator plate; 11, light blocking wheel bracket; 12, dust-eliminating aperture; 13, reference hole; 14 , rotating platform; 15, light window base; 16, sealing gasket 1; 17, sealing ring 1; 18, indicating fixed column; 19, aviation sealing plug; 20, sealing gasket 2; 21, sealing ring 2; 22, rear shell; 23, Peltier fixing plate; 24, thermal insulation cotton 1; 25, thermal insulation cotton 2; 26, sealing ring 3; 27, sealing gasket 3; 28, shell back cover; 29, Peltier; 30, optical main unit; 31, protective shell; 32, control board. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] See also Figures 1 to 4The present invention provides a technical solution: a sunlight meter measuring device, comprising an optical head housing 1, a light window base 15 detachably mounted on the end of the optical head housing 1, a light window glass 3 embedded in the light window base 15, a field aperture piece 2 embedded in the optical head housing 1, a surface of the field aperture piece 2 is provided with a plurality of circumferentially distributed measuring channel aperture holes 202, and a four-quadrant aperture hole 201 is opened at the center, a surface of the field aperture piece 2 is also provided with a plurality of position holes 203, a four-quadrant aperture tube 5 is arranged inside the optical head housing 1, a four-quadrant detector 6 corresponding to the position of the four-quadrant aperture hole 201 is fixedly mounted inside the four-quadrant aperture tube 5, a light blocking wheel bracket 11 is fixedly connected inside the optical head housing 1, a four-quadrant aperture bracket 9 is fixedly connected to the light blocking wheel bracket 11, and three groups of adjustment components are arranged between the end of the four-quadrant aperture bracket 9 and the four-quadrant aperture tube 5.

[0030] The adjustment assembly includes a screw 8 and a spring 7 sleeved on the outside of the screw 8. A first supporting hole 51 is opened at the end of the four-quadrant aperture tube 5, and a second supporting hole 91 is opened at the end of the four-quadrant aperture bracket 9. The spring 7 is arranged between the first supporting hole 51 and the second supporting hole 91. A screw hole is opened at the bottom of the second supporting hole 91. The end of the screw 8 passes through the first supporting hole 51 and the second supporting hole 91 in turn and is threadedly inserted into the inside of the screw hole.

[0031] The inclination angle of the light channel of the four-quadrant aperture tube 5 is determined by observing the position of the light spot passing through the reference hole 13 and falling on the indicator plate 10. The angle of the incident light axis of the four-quadrant aperture tube 5 is adjusted by rotating the screw 8 and under the action of the spring 7 to complete the relative parallel adjustment of the four-quadrant optical axis and the optical axis of the peripheral measurement channel.

[0032] The lower computer analyzes the angle of inclination with the sun by the current difference of the four quadrants of the four-quadrant detector 6, and then adjusts the relative movement of the horizontal rotation angle and pitch angle of the two-position turntable of the sun photometer through the motor, so as to realize the precise alignment of the four-quadrant detector 6 with the sun and complete the precise tracking of the sun photometer. By adjusting the relative parallelism of the four-quadrant optical axis and the optical axis of the measurement channel, the accuracy of the channel data measurement is further improved after they are parallel. This mechanical floating adjustable four-quadrant device is simple, reliable and easy to operate, which greatly improves the assembly and debugging efficiency of the equipment and also provides convenience for later maintenance.

[0033] An aperture plug 4 is provided inside the position hole 203. For later adjustments, first remove the light window glass assembly, remove the aperture plug 4, and the hexagonal wrench can be used through the position hole 203 for adjustment. The design of the aperture plug 4 is convenient for adjustment before and after installation, as well as during later maintenance; it also serves as a sealing function to prevent stray light from entering the system and causing measurement interference.

[0034] A reference hole 13 is opened at one end of the optical head housing 1, and an indicator plate 10 corresponding to the position of the reference hole 13 is fixedly installed on the outer wall of the optical head housing 1. The indicator plate 10 is fixed on the indicator fixing column 18, and the lower end of the indicator fixing column 18 is inserted into the rear housing 22.

[0035] The reference hole 13 is observed, and the position of the light spot on the indicator plate 10 is used to determine the inclination angle of the light channel of the four-quadrant aperture tube 5 .

[0036] A de-stirring aperture plate 12 is embedded on the top of the four-quadrant aperture bracket 9 , and a plurality of secondary aperture holes are opened on the de-stirring aperture plate 12 , and the positions of the secondary aperture holes correspond to the aperture holes 202 of the measuring channel.

[0037] The 9 secondary aperture holes evenly distributed on the circumference of the stray aperture plate 12 are concentrically aligned with the aperture hole 202 of the measuring channel. The stray aperture plate 12 filters out the light entering the system again, and some stray light is prevented from interfering with the measuring signal. The upper part of the four-quadrant cylinder bracket 9 has three first support holes 51 and second support holes 91 evenly distributed on the circumference, which are used for positioning and installing the spring 7; the four-quadrant aperture bracket 9 is fixed on the light blocking wheel bracket 11, and the light blocking wheel bracket 11 is also a structure with 9 concentric aperture holes 202 of the measuring channel, allowing the light path to enter the 9-channel optical main unit 30 to complete the signal acquisition measurement.

[0038] The optical head housing 1 is also provided with a rotating platform 14 , and the optical head housing 1 can be rotatably disposed on the rotating platform 14 .

[0039] The end of the optical head housing 1 is fixedly connected to the rear housing 22, and an optical main unit 30 and a control panel 32 are fixedly installed inside the rear housing 22. The optical main unit 30 has a temperature sensor inside. A Peltier fixing plate 23 is fixed on the optical main unit 30, and a Peltier 29 is fixedly installed on the Peltier fixing plate 23. The Peltier 29 is in contact with the optical main unit 30 and the rear housing 22. A protective shell 31 is arranged outside the optical main unit 30, and thermal insulation cotton 1 24 and thermal insulation cotton 25 are arranged between the rear housing 22 and the optical main unit 30.

[0040] The spectral characteristic detectors of each channel are easily affected by changes in the environment of the optical main unit 30, which causes signal temperature drift errors. By controlling the temperature of the entire optical main unit 30, data measurement can be made more accurate and scientific.

[0041] The temperature sensor inside the optical main unit 30 obtains the internal temperature information in real time, feeds it back to the control board 32, compares it with the constant temperature set by the system, adjusts the cooling power, completes the closed-loop PID regulation control, and realizes the constant temperature. The constant temperature control of the internal environment of the optical main unit 30 is realized by Peltier 29, the accurate measurement of the detector is realized, and the influence of temperature difference drift on the spectrum acquisition value is reduced. The rear shell 22 has a heat dissipation groove structure, which increases the area of ​​heat exchange with the air and improves the heat conduction efficiency. It prevents the temperature from being too high in summer, which affects the performance and service life of components, and also prevents the temperature from being too low, which may cause the instability of the performance of the component materials, thereby affecting the accuracy of the measured data.

[0042] A shell rear cover 28 is fixedly mounted on the end of the rear shell 22 , a sealing ring 3 26 and a sealing gasket 3 27 are arranged between the shell rear cover 28 and the rear shell 22 , and an aviation sealing plug 19 is fixedly mounted on the end of the shell rear cover 28 .

[0043] A sealing ring 21 and a sealing gasket 20 are provided between the optical head housing 1 and the rear housing 22 .

[0044] A sealing gasket 16 and a sealing ring 17 are provided between the optical window base 15 and the optical head housing 1 .

[0045] Double sealing details of sealing ring and gasket are made at each joint surface, which improves the protection sealing level of the product and provides a sealed and dry measurement condition isolated from the outside world for the instrument. It eliminates condensation inside the equipment caused by excessive humidity, which causes safety problems such as short circuit; static electricity caused by low humidity may cause potential damage to the product; excessive humidity will also affect the normal operation of the detector, and even cause damage to components, affecting its detection speed, accuracy and stability, and shortening its service life.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sun photometer measuring device, characterized in that: The optical head housing (1) comprises an optical window base (15) which is detachably mounted on the end of the optical head housing (1); an optical window glass (3) is embedded in the optical window base (15); a field aperture plate (2) is embedded in the optical head housing (1); a surface of the field aperture plate (2) is provided with a plurality of circumferentially distributed measurement channel aperture holes (202), and a four-quadrant aperture hole (201) is opened at the center; a surface of the field aperture plate (2) is also provided with a plurality of position holes (20 3), a four-quadrant aperture tube (5) is arranged inside the optical head housing (1), a four-quadrant detector (6) corresponding to the position of the four-quadrant aperture hole (201) is fixedly installed inside the four-quadrant aperture tube (5), a light blocking wheel bracket (11) is fixedly connected inside the optical head housing (1), a four-quadrant aperture bracket (9) is fixedly connected to the light blocking wheel bracket (11), and three groups of adjustment components are arranged between the end of the four-quadrant aperture bracket (9) and the four-quadrant aperture tube (5).

2. A sun photometer measuring device according to claim 1, characterized in that: The adjustment component comprises a screw (8) and a spring (7) sleeved on the outside of the screw (8); a first supporting hole (51) is provided at the end of the four-quadrant aperture tube (5); a second supporting hole (91) is provided at the end of the four-quadrant aperture bracket (9); the spring (7) is arranged between the first supporting hole (51) and the second supporting hole (91); a screw hole is provided at the bottom of the second supporting hole (91); the end of the screw (8) passes through the first supporting hole (51) and the second supporting hole (91) in sequence and is threadedly inserted into the inside of the screw hole.

3. A sun photometer measuring device according to claim 1, characterized in that: An aperture plug (4) is arranged inside the position hole (203).

4. A sun photometer measuring device according to claim 1, characterized in that: A reference hole (13) is provided at one end of the optical head housing (1); an indicator plate (10) corresponding to the position of the reference hole (13) is fixedly mounted on the outer wall of the optical head housing (1); the indicator plate (10) is fixed on an indicator fixing column (18); and the lower end of the indicator fixing column (18) is inserted into the interior of the rear housing (22).

5. A sun photometer measuring device according to claim 1, characterized in that: A de-stirring aperture plate (12) is embedded on the top of the four-quadrant aperture bracket (9), and a plurality of secondary aperture holes are formed on the de-stirring aperture plate (12), and the positions of the secondary aperture holes correspond to the measurement channel aperture holes (202).

6. A sun photometer measuring device according to claim 1, characterized in that: It also comprises a rotating platform (14), on which the optical head housing (1) can be rotatably arranged.

7. A sun photometer measuring device according to claim 1, characterized in that: The end of the optical head housing (1) is fixedly connected to the rear housing (22), an optical main unit (30) and a control panel (32) are fixedly installed inside the rear housing (22), a temperature sensor is provided inside the optical main unit (30), a Peltier fixing plate (23) is fixed on the optical main unit (30), a Peltier (29) is fixedly installed on the Peltier fixing plate (23), the Peltier (29) is in contact with the optical main unit (30) and the rear housing (22), a protective shell (31) is arranged outside the optical main unit (30), and a first heat preservation cotton (24) and a second heat preservation cotton (25) are arranged between the rear housing (22) and the optical main unit (30).

8. A sun photometer measuring device according to claim 1, characterized in that: A shell rear cover (28) is fixedly mounted on the end of the rear shell (22), a sealing ring (26) and a sealing gasket (27) are arranged between the shell rear cover (28) and the rear shell (22), and an aviation sealing plug (19) is fixedly mounted on the end of the shell rear cover (28).

9. A sun photometer measuring device according to claim 1, characterized in that: A second sealing ring (21) and a second sealing gasket (20) are provided between the optical head housing (1) and the rear housing (22).

10. A sun photometer measuring device according to claim 1, characterized in that: A sealing gasket (16) and a sealing ring (17) are provided between the optical window base (15) and the optical head housing (1).

Images