System for monitoring solar broadband spectrum

Abstract

The invention relates to a system for monitoring a solar broadband spectrum, belongs to the technical field of spectrum measurement, and solves the problems of low stability and low scanning precision of the existing solar spectrum monitoring system or instrument. The system comprises a space high-precision sun tracking rotary table, a space high-precision wide-spectrum spectrum system installed on the tracking rotary table, and an intelligent driving system used for uniformly driving the tracking rotary table and the spectrum system, and the tracking rotary table adopts a two-dimensional rotary table structure. Comprising an inner frame assembly, a U-shaped frame assembly, a pitch axis assembly, an azimuth axis assembly and a bottom plate assembly, and a wavelength scanning mechanism in the spectrum system adopts a lead screw swing rod mechanism and comprises a swing rod, a spring, a lead screw, a sliding block matched with the lead screw and a stepping motor for driving the lead screw to rotate. According to the invention, the spatial high-precision wide-band spectrum system, the spatial high-precision solar tracking turntable and the intelligent driving system cooperate with each other, so that long-term high-stability high-precision monitoring of the solar wide-band spectrum is realized.

Description

Technical Field

[0001] The invention relates to the technical field of spectrum measurement, and in particular to a system for monitoring a wide-band spectrum of the sun. Background Art

[0002] The sun is the energy source of the Earth system and its life system, and is the driving force behind the formation and evolution of the Earth's climate. The Sun causes a huge nuclear fusion reaction through complex physical processes, and transmits energy to the outside in the form of electromagnetic radiation, continuously providing light and heat to the Earth, while also affecting space weather, Earth weather, and climate. The energy provided by the Sun to the Earth accounts for more than 99.97% of the Earth's total energy, and is the Earth's main energy supplier. Therefore, monitoring changes in the solar spectrum is of great scientific significance.

[0003] Since the solar spectrum changes periodically with the movement of the sun, it is necessary to arrange the task of measuring solar irradiance regularly. However, the launch process of the measuring instrument needs to go through a harsh mechanical environment, and it also has to withstand the harsh space environment during its operation in orbit. It is very difficult to obtain accurate and stable measurement results. On the other hand, a solar activity cycle lasts for 11 years, which puts strict requirements on the working life of the measuring instrument. Therefore, it is necessary to continuously carry the solar irradiance spectrometer to ensure the stability and continuity of the solar observation monitoring mission.

[0004] Since the 1970s, remote sensing monitoring of solar spectrum radiation changes has been carried out both at home and abroad. Since the solar spectrum covers a wide range, the monitoring of the solar spectrum usually covers the ultraviolet, visible and infrared bands. The world's first relatively mature satellite-borne instrument for measuring solar ultraviolet spectrum irradiance, SBUV, developed by the National Oceanic and Atmospheric Administration of the United States, has been in orbit for 14 years. It adopts a double grating dispersion structure and uses a stepper motor to drive the scanning mechanism to control the double monochromator to scan the spectrum, and obtains rich ultraviolet spectrum irradiance data. In 1991, the Solar Ultraviolet Spectral Monitor (SUSIM) was launched into space. It is mainly used to measure the solar spectrum irradiance in the ultraviolet band of 115nm~410nm. It consists of two identical optical channels, which are used for solar spectrum irradiance measurement and self-calibration respectively, and real-time monitoring of the attenuation changes of the on-orbit optical system and subsequent detectors. The front end of the SUSIM instrument is equipped with a stray light diaphragm. The shutter is used to protect the subsequent optical components from long-term solar radiation when in standby mode. The standard lamp assembly consisting of four deuterium lamps is installed on the rotating wheel. Six filters control the entrance lighting through the rotating wheel. The 115nm~200nm band is measured using a MgF2 filter, and the 200nm~410nm band is measured using a quartz filter to weaken the strong light. In January 2003, the spectral irradiance detector SIM was successfully launched, using a Fery prism instead of a grating. Compared with traditional prisms, the Fery prism achieves full wavelength range detection with only one optical element through self-collimation and imaging. However, the influence of solar extreme ultraviolet radiation was not considered in the design of the instrument, and its core components were exposed to solar radiation for a long time, resulting in serious response degradation in the early stage of the experiment. Therefore, it is particularly important to establish a system for long-term, high-stability, and high-precision monitoring of the solar wide-band spectrum in space.

[0005] For spectral systems, some wavelength scanning mechanisms use cam drive devices. The cam rocker mechanism relies on the outer contour of the cam to control the grating angle value, and then outputs the spectrum of the corresponding wavelength. Therefore, the profile parameters of the cam are crucial. When the wavelength scanning accuracy is high, the processing accuracy of the cam becomes the main factor limiting its application, and the cam is too bulky to ensure the high stability of the system. For the drive device using a screw rocker, the traditional screw rocker mechanism usually designs a spring with one end fixed on the box wall and the other end fixed on the rocker. The preload of the spring ensures that the rocker and the slider are always in close contact when the mechanism is running. However, since the fixed end of the spring remains stationary during the movement of the rocker, as the slider travels, the length of the spring increases significantly, and the driving torque of the stepper motor also increases accordingly, and there is a large torque fluctuation in the entire scanning range.

[0006] At present, the instruments used for solar spectrum monitoring are too large and heavy, and cannot guarantee long-term stable operation in orbit. The payload of solar observation using two-dimensional structures is small and the accuracy is low.

[0007] For multi-channel related instruments, there is no intelligent system that uniformly drives multiple signal processing devices, and the control method for the wavelength scanning mechanism is relatively complicated. Summary of the invention

[0008] In response to the problems of low stability and scanning accuracy of spectral systems or instruments currently used for solar spectrum monitoring, the present invention proposes a system for long-term, high-stability and high-precision monitoring of the solar wide-band spectrum in space. The system achieves long-term, high-stability and high-precision monitoring of the solar wide-band spectrum by using a spatial high-precision wide-band spectral system, a spatial high-precision solar tracking turntable, and an intelligent driving system that uniformly drives the spatial high-precision wide-band spectral system and the spatial high-precision solar tracking turntable.

[0009] To solve the above problems, the present invention adopts the following technical solutions: A system for monitoring a solar wide-band spectrum, characterized in that it comprises a spatial high-precision solar tracking turntable, a spatial high-precision wide-band spectrum system installed on the spatial high-precision solar tracking turntable, and an intelligent driving system for uniformly driving the spatial high-precision solar tracking turntable and the spatial high-precision wide-band spectrum system; The space high-precision solar tracking turntable adopts a two-dimensional turntable structure, which includes an inner frame assembly, a U-shaped frame assembly, a pitch axis assembly, an azimuth axis assembly and a bottom plate assembly. The azimuth axis assembly is arranged on the lower surface of the bottom plate assembly, and the U-shaped frame assembly is arranged on the upper surface of the bottom plate assembly. The inner frame assembly is rotatably connected to both sides of the U-shaped frame assembly through the pitch axis assembly. The UV spectrometer and VIS / IR spectrometer in the space high-precision wide-band spectral system are symmetrically installed on the inner frame assembly, respectively, and the pitch axis assembly and the azimuth axis assembly are electrically connected to the intelligent drive system respectively. In the spatial high-precision wide-band spectroscopy system, multiple grating seats are fixed on the same grating axis, each grating seat is made of invar material with a similar expansion coefficient to the grating, the grating and the corresponding grating seat are fixed by a flexible pressing plate and glue combination, and after the grating and the grating seat are assembled, debugged, tightened, and stress released, the grating axis is installed in the spectrometer through a bearing; the wavelength scanning mechanism drives each grating to perform a linear scan of the wavelength, and the wavelength scanning mechanism adopts a screw rocker mechanism, which includes a rocker, a spring, a screw, a slider matched with the screw, and a stepping motor driving the screw to rotate, the head end of the rocker is fixed to the grating axis, and the end is provided with a roller, the spring is pre-tightened and The two ends are respectively fixed to the ends of the slider and the swing rod, so that the roller always keeps close contact with the slider. The wavelength scanning mechanism also includes a coarse Hall sensor for limiting and returning to zero for the slider, a coarse Hall sensor for returning to zero, and a fine Hall sensor for accurately positioning the slider. The coarse magnetic steel matched with the coarse Hall sensor for positioning and limiting and the coarse Hall sensor for returning to zero is fixed on the slider, and the fine magnetic steel matched with the fine Hall sensor for positioning is fixed on the shaft sleeve of the stepping motor. The stepping motor, the coarse Hall sensor for limiting, the coarse Hall sensor for returning to zero, and the fine Hall sensor for positioning are electrically connected to the intelligent drive system respectively. The intelligent drive system controls the movement of the pitch axis assembly and the azimuth axis assembly to achieve sun tracking, receives the Hall signals generated by each Hall sensor, generates a motor drive signal and sends it to the stepper motor, and before each spectral scan, the intelligent drive system performs a zero return operation on the wavelength scanning mechanism.

[0010] Beneficial effects of the present invention: (1) The spatial high-precision wide-band spectroscopy system of the present invention uses a wavelength scanning mechanism based on a screw rocker, innovatively designs and adopts a slider rocker direct pre-tightening process, and combines a coarse and fine magnetic steel-Hall phase complementary positioning scheme to ensure the smooth output of the motor driving torque during the entire scanning process, improve the positioning accuracy and zero return efficiency of the screw rocker mechanism, and at the same time increase the mechanism zero return accuracy, reduce the wavelength repeatability error, and achieve fine drive of the grating; (2) The spatial high-precision solar tracking turntable of the present invention adopts a two-dimensional turntable structure for solar observation. The intelligent driving system drives the two-dimensional turntable structure to rotate in azimuth and elevation to achieve solar tracking, so that the energy of sunlight entering the spectrometer is stronger and the system signal-to-noise ratio is higher, which is conducive to improving the accuracy of the spectral instrument and obtaining more accurate spectral data; (3) The intelligent driving system in the present invention can uniformly drive and control the multi-channel wavelength scanning mechanism and the two-dimensional turntable structure, and innovatively adopts a structure without feedback components such as encoders, which has higher control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic diagram of a two-dimensional turntable structure; Figure 2 is a schematic diagram of the structure of the grating and the grating axis; Figure 3 It is a structural schematic diagram of the wavelength scanning mechanism.

[0012] Explanation of the reference numerals in the accompanying drawings: 1. Inner frame assembly; 2. U-shaped frame assembly; 3. Pitch axis assembly; 4. Azimuth axis assembly; 5. Bottom plate assembly; 6. Grating seat; 7. Grating axis; 8. Grating; 9. Bearing; 10. Rocker; 11. Spring; 12. Lead screw; 13. Slider; 14. Stepper motor; 15. Roller; 16. Coarse Hall sensor for limiting position; 17. Coarse Hall sensor for returning to zero; 18. Fine Hall sensor for positioning; 19. Coarse magnet; 20. Fine magnet; 21. Bushing; 22. Auxiliary support assembly. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] The present invention proposes a system for long-term high-stability and high-precision monitoring of the solar wide-band spectrum in space, the system comprising a high-precision spatial solar tracking turntable, a high-precision spatial wide-band spectrum system and an intelligent driving system, wherein the high-precision spatial wide-band spectrum system is installed on the high-precision spatial solar tracking turntable, and the intelligent driving system is used to uniformly drive the high-precision spatial solar tracking turntable and the high-precision spatial wide-band spectrum system. The present invention realizes long-term high-stability and high-precision monitoring of the solar wide-band spectrum by using the high-precision spatial wide-band spectrum system, the high-precision spatial solar tracking turntable and the intelligent driving system to cooperate with each other.

[0015] Specifically, the space high-precision solar tracking turntable uses a two-dimensional turntable structure for solar observation. The intelligent drive system drives the two-dimensional turntable structure to rotate in azimuth and elevation to achieve solar tracking, making the energy of sunlight entering the spectrometer stronger, thereby improving the system signal-to-noise ratio and the accuracy of the spectral instrument, and obtaining more accurate spectral data. Figure 1As shown, the two-dimensional turntable structure is mainly composed of an inner frame component 1, a U-shaped frame component 2, a pitch axis component 3, an azimuth axis component 4 and a bottom plate component 5, wherein the azimuth axis component 4 is arranged on the lower surface of the bottom plate component 5, the U-shaped frame component 2 is arranged on the upper surface of the bottom plate component 5, the inner frame component 1 is rotatably connected to both sides of the U-shaped frame component 2 through the pitch axis component 3, and the spatial high-precision wide-band spectrum system includes a UV spectrometer and a VIS / IR spectrometer for measuring the solar wide-band spectrum, and the UV spectrometer and the VIS / IR spectrometer are symmetrically installed on the inner frame component 1, and the installation position is shown in FIG. Figure 1 In order to improve the mechanical properties of the system, the center of mass of the two-dimensional turntable and its load is minimized, and the spectrometer is installed in a symmetrical structure. The electric box and the guide mirror are installed on the inner frame assembly 1 between the two spectrometers. For specific installation positions, see Figure 1 , and reasonably arrange the installation positions of each load to minimize the rotational inertia of the turntable, ensuring the high stability and high precision of the system. The pitch axis assembly 3 and the azimuth axis assembly 4 are electrically connected to the intelligent drive system respectively, and the intelligent drive system drives the pitch axis assembly 3 and the azimuth axis assembly 4 to realize the two-dimensional turntable structure tracking the sun.

[0016] Considering the impact and vibration during launch, the two-dimensional turntable structure also includes an auxiliary support assembly 22 for locking the U-shaped frame assembly 2. The auxiliary support assembly 22 is arranged on the bottom plate assembly 5, and the auxiliary support assembly 22 is located on the outside of the U-shaped frame assembly 2. Figure 1 In the example, the auxiliary support components 22 are arranged at the four corners of the bottom plate component 5. The specific number and installation position of the auxiliary support components 22 can be selected according to actual needs. The auxiliary support components 22 in this embodiment can be implemented by an existing locking mechanism or a locking mechanism, which will not be described here.

[0017] The solar spectrometer adopts the form of double monochromator. The spatial high-precision wide-band spectrum system includes UV spectrometer and VIS / IR spectrometer. The spectrum is scanned by rotating the grating. Therefore, the design and adjustment of the motion mechanism directly determine the stability and accuracy of the spectrum system. Multiple grating seats 6 are fixed on the same grating axis 7. Each grating seat 6 adopts Invar material with a coefficient of expansion similar to that of the grating 8 to reduce the adverse effects caused by temperature changes. The overall rigidity is high and can effectively resist the harsh mechanical environment. At the same time, the grating 8 and the corresponding grating seat 6 are fixed by a flexible pressure plate and glue combination. After the grating 8 and the grating seat 6 are assembled, debugged, tightened, and stress released, the grating axis 7 is installed in the spectrometer through the bearing 9 to ensure the stability of the grating.

[0018] The wavelength scanning mechanism drives each grating 8 to perform linear scanning of the wavelength. The wavelength scanning mechanism adopts a screw rocker mechanism, which includes a rocker 10, a spring 11, a screw 12, a slider 13 matched with the screw 12, and a stepper motor 14 driving the screw 12 to rotate. The head end of the rocker 10 is fixed to the grating shaft 7, and a roller 15 is provided at the end. The spring 11 is pre-tightened, and the two ends of the spring 11 are respectively fixed to the slider 13 and the end of the rocker 10. The pre-tightening force of the spring 11 ensures that the roller 15 and the slider 13 always maintain close contact when the mechanism is running. The stepper motor 14 is electrically connected to the intelligent drive system. The stepper motor 14 drives the screw 12 to rotate under the control of the intelligent drive system. The slider 13 on the screw 12 drives the rocker 10, and the rocker 10 drives the grating 8 through the grating shaft 7 to perform linear scanning of the wavelength. During the operation of the wavelength scanning mechanism, the roller 15 at the end of the swing rod 10 always maintains close contact with the slider 13, so a layer of 40Cr material is plated between the slider 13 and the roller 15, and on the side where the slider 13 contacts the roller 15, to play a wear-resistant role. At the same time, in order to meet the flatness requirements of the contact surface, a MoS2 film is plated on the surface of the 40Cr material layer as a cold welding prevention treatment to increase the service life. In the lead screw rocker mechanism of the present invention, the spring 11 directly preloads the slider 13 and the rocker 10. Compared with the method in which the two ends of the spring are directly fixed to the fixed end and the rocker respectively, since the fixed end of the spring remains stationary during the movement of the rocker, the spring length increases significantly with the increase of the slider stroke, and the driving torque of the stepper motor also increases accordingly, resulting in a large torque fluctuation in the entire scanning range. In the lead screw rocker mechanism of the present invention, not only the size of the spring 11 is significantly shortened, but also according to the motion analysis, during the movement of the slider 13, the roller 15 at the end of the rocker 10 only moves slightly on the surface of the slider 13. Therefore, during the entire scanning process, the change in spring tension is very small, and the driving torque of the stepper motor 14 remains almost unchanged. Therefore, the torque fluctuation during wavelength scanning can be effectively reduced, and it also has significant advantages in reducing the spring amplitude, further ensuring the high stability and high precision of the spectral system.

[0019] High-precision control of the wavelength scanning mechanism and the two-dimensional turntable structure is also a necessary condition for achieving high stability and high precision of the solar spectrometer. Due to the limitations of volume, weight and power consumption, the present invention innovatively adopts a structure without feedback components such as encoders to achieve a high-precision control method for accurate positioning.

[0020] The spatial high-precision wide-band spectroscopy system uses a wavelength scanning mechanism based on a screw-rocker rod, innovatively designs and adopts a slider-rocker rod direct pre-tightening process, and combines a coarse and fine magnetic steel-Hall phase complementary positioning scheme to ensure the smooth output of the motor driving torque during the entire scanning process, improve the positioning accuracy and zero return efficiency of the screw-rocker rod mechanism, and at the same time increase the zero return accuracy of the screw-rocker rod mechanism, reduce the wavelength repeatability error, and achieve fine drive of the grating.

[0021] For the wavelength scanning mechanism, three Hall sensors are installed for positioning, namely, a limit coarse Hall sensor 16, a return coarse Hall sensor 17 and a positioning fine Hall sensor 18. The limit coarse Hall sensor 16 and the return coarse Hall sensor 17 are used to represent the two ends of the effective stroke of the lead screw 12 and the slider 13 respectively, and the coarse magnetic steel 19 matched with the limit coarse Hall sensor 16 and the return coarse Hall sensor 17 is fixed on the slider 13, and the limit and return to zero of the slider 13 are realized by the cooperation of the limit coarse Hall sensor 16, the return coarse Hall sensor 17 and the coarse magnetic steel 19; the positioning fine Hall sensor 18 is arranged opposite to the fine magnetic steel 20, and the positioning fine Hall sensor 18 is installed on a fixed position by bonding or the like, and the fine magnetic steel 20 is fixed on the shaft sleeve 21 of the stepping motor 14, wherein the shaft sleeve 21 is used to fix one end of the lead screw 12 and the output shaft of the stepping motor 14, and the precise positioning of the slider 13 is realized by the cooperation of the positioning fine Hall sensor 18 and the fine magnetic steel 20. The coarse limit Hall sensor 16, the coarse return to zero Hall sensor 17 and the fine positioning Hall sensor 18 are electrically connected to the intelligent drive system respectively, and the generated Hall signals are sent to the intelligent drive system for analysis and processing by the intelligent drive system.

[0022] The intelligent drive system controls the movement of the pitch axis assembly 3 and the azimuth axis assembly 4 to achieve solar tracking. It also receives the Hall signals generated by each Hall sensor, generates a motor drive signal and sends it to the stepper motor 14. The stepper motor 14 drives the lead screw 12 to rotate, and finally drives the grating 8 to rotate to scan the spectrum.

[0023] Before each spectrum scan, the intelligent drive system performs a zero return operation on the wavelength scanning mechanism. The specific process of the intelligent drive system performing the zero return operation on the wavelength scanning mechanism includes: during the zero return process, the intelligent drive system outputs a zero return motor drive signal to the stepper motor 14, controls the stepper motor 14 to perform zero return rotation, and when receiving the Hall signal generated by the coarse zero return Hall sensor 17, the stepper motor 14 will continue to perform zero return rotation until it receives the Hall signal generated by the positioning fine Hall sensor 18 and stops rotating, and then the stepper motor 14 reverses until the next time it receives the Hall signal generated by the positioning fine Hall sensor 18, the motor stops rotating, and the zero return is completed. Furthermore, when performing the zero return operation, the zero return motor drive signal is subdivided into 16 parts, and the rotation angle of each subdivision stepper motor is only 0.1125°, ensuring that the screw rocker mechanism has high precision.

[0024] The intelligent drive system drives a variety of signal processing devices in a unified manner, and can uniformly drive and control the multi-channel wavelength scanning mechanism and the two-dimensional turntable structure. It innovatively adopts a structure without feedback components such as encoders to achieve high-precision control.

[0025] After the on-orbit operation test, the system for monitoring the solar wide-band spectrum of the present invention has a long on-orbit operation time and good feedback data results, which proves that the system of the present invention is stable and reliable.

[0026] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0027] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A system for monitoring the solar broadband spectrum, characterized in that: It comprises a space high-precision solar tracking turntable, a space high-precision wide-band spectrum system installed on the space high-precision solar tracking turntable, and an intelligent driving system for uniformly driving the space high-precision solar tracking turntable and the space high-precision wide-band spectrum system; The spatial high-precision solar tracking turntable adopts a two-dimensional turntable structure, and the two-dimensional turntable structure comprises an inner frame assembly (1), a U-shaped frame assembly (2), a pitch axis assembly (3), an azimuth axis assembly (4) and a base plate assembly (5), wherein the azimuth axis assembly (4) is arranged on the lower surface of the base plate assembly (5), and the U-shaped frame assembly (2) is arranged on the upper surface of the base plate assembly (5); the inner frame assembly (1) is rotatably connected to both sides of the U-shaped frame assembly (2) via the pitch axis assembly (3); the UV spectrometer and the VIS / IR spectrometer in the spatial high-precision wide-band spectral system are symmetrically mounted on the inner frame assembly (1), and the pitch axis assembly (3) and the azimuth axis assembly (4) are electrically connected to the intelligent drive system respectively; In the spatial high-precision wide-band spectroscopy system, a plurality of grating seats (6) are fixed on the same grating axis (7), each grating seat (6) is made of invar material having a similar expansion coefficient to that of the grating (8), the grating (8) and the corresponding grating seat (6) are fixed by a flexible pressing plate and adhesive bonding, and after the grating (8) and the grating seat (6) are assembled, debugged, tightened, and stress released, the grating axis (7) is installed in the spectrometer through a bearing (9); a wavelength scanning mechanism drives each grating (8) to perform a linear scan of the wavelength, and the wavelength scanning mechanism adopts a screw rocker mechanism, and the screw rocker mechanism comprises a rocker (10), a spring (11), a screw (12), a slider (13) matched with the screw (12), and a stepping motor (14) driving the screw (12) to rotate, the head end of the rocker (10) is fixed to the grating axis (7), and the end is provided with a roller (15), the spring (11) is pre-tightened and the two ends are separated The roller (15) and the slider (13) are respectively fixed to the ends of the slider (13) and the swing rod (10), so that the roller (15) and the slider (13) always maintain close contact, the wavelength scanning mechanism also includes a limit coarse Hall sensor (16) and a return coarse Hall sensor (17) for limiting and returning the slider (13), and a positioning fine Hall sensor (18) for accurately positioning the slider (13), a coarse magnetic steel (19) matched with the limit coarse Hall sensor (16) and the return coarse Hall sensor (17) is fixed on the slider (13), and a fine magnetic steel (20) matched with the positioning fine Hall sensor (18) is fixed on the shaft sleeve (21) of the stepping motor (14), and the stepping motor (14), the limit coarse Hall sensor (16), the return coarse Hall sensor (17) and the positioning fine Hall sensor (18) are respectively electrically connected to the intelligent drive system; The intelligent drive system controls the movement of the pitch axis assembly (3) and the azimuth axis assembly (4) to achieve sun tracking, receives Hall signals generated by various Hall sensors, generates motor drive signals and sends them to the stepper motor (14), and before each spectrum scan, the intelligent drive system performs a zero return operation on the wavelength scanning mechanism.

2. A system for monitoring the solar broadband spectrum according to claim 1, characterized in that: The process of the intelligent driving system performing a zero return operation on the wavelength scanning mechanism includes: The intelligent drive system outputs a return-to-zero motor drive signal to the stepper motor (14), controls the stepper motor (14) to perform return-to-zero rotation, and when receiving the Hall signal generated by the coarse return-to-zero Hall sensor (17), the stepper motor (14) continues to perform return-to-zero rotation until it stops rotating when it receives the Hall signal generated by the fine positioning Hall sensor (18), and then the stepper motor (14) reverses until it receives the Hall signal generated by the fine positioning Hall sensor (18) next time, the stepper motor (14) stops rotating, and the return-to-zero operation ends.

3. A system for monitoring the solar broadband spectrum according to claim 2, characterized in that: When performing the zero return operation, the zero return motor drive signal is subdivided into 16 parts, and the stepper motor rotation angle is 0.1125° in each subdivision.

4. A system for monitoring the solar broadband spectrum according to any one of claims 1 to 3, characterized in that: The two-dimensional turntable structure further comprises an auxiliary support component (22), wherein the auxiliary support component (22) is arranged on the bottom plate component (5) and is located outside the U-shaped frame component (2).

5. A system for monitoring the solar broadband spectrum according to any one of claims 1 to 3, characterized in that: A 40Cr material layer is plated on the side of the slider (13) that contacts the roller (15).

6. A system for monitoring the solar broadband spectrum according to claim 5, characterized in that: A MoS2 film layer is plated on the surface of the 40Cr material layer.

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