Directing assembly for remote Raman spectrum detection of lunar and use method
By integrating a reflector, dust cover, and rotating spindle, the design solves the problems of detection pointing adjustment, on-orbit calibration, and lunar dust protection for the lunar remote Raman spectrometer. It achieves efficient multi-task integration and data accuracy, and is suitable for lunar exploration missions with high requirements for weight, space, and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XIAN INST OF OPTICS & PRECISION MECHANICS CHINESE ACAD OF SCI
- Filing Date
- 2026-03-13
- Publication Date
- 2026-05-19
AI Technical Summary
Existing technologies cannot achieve the detection pointing adjustment, on-orbit calibration, and lunar dust protection of a lunar remote Raman spectrometer without adding extra components.
The design integrates a reflector, dust cover, and rotating spindle. It achieves target pointing scanning, on-orbit spectral calibration, and lunar dust protection by driving synchronous rotation through a single motor. The rotating spindle is parallel to the output optical axis of the detection instrument. Combined with the precise control of the stepper motor driven by a high reduction ratio transmission component, and the adaptation design of the dust cover and the partial shell, the optical path closure and spectral calibration are achieved.
It achieves multi-task integration of the instrument, reduces the complexity of the mechanism and the number of failure points, improves the flexibility of exploration and the accuracy of data, and meets the requirements of lunar exploration missions for weight, space and reliability.
Smart Images
Figure CN122063045A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of aerospace equipment technology and relates to a pointing component and its usage method for remote Raman spectroscopy detection on the moon. Background Technology
[0002] Detecting the composition and volatiles of lunar materials helps humanity obtain clues and evidence regarding lunar impacts and thermal evolution, thereby inferring the origin and formation process of the Moon. Raman spectroscopy, as a technique that can effectively detect mineral composition and identify mineral types remotely, can accurately identify the composition, type, and structure of various minerals. During in-situ Raman detection on the Moon, the location of minerals of interest is unpredictable; therefore, it is desirable for instruments to have the ability to perform fine scanning at different locations, improving the flexibility and mobility of detection, and increasing the availability of lunar mineral Raman spectral data.
[0003] Due to the large amount of lunar dust accumulated on the lunar surface, dust may be generated during the exploration process. Lunar dust, being electrically charged, is easily attracted to the surface of equipment, affecting its performance and, in severe cases, causing safety hazards such as jamming of moving mechanisms and short circuits. Therefore, lunar dust protection is a crucial issue that lunar exploration equipment needs to address. Conventional sealing methods use elastic or flexible components such as gaskets and indium wires to seal tiny pores, for example, pressing a gasket tightly under the light window of the light outlet. However, Raman detection requires the use of powerful lasers, and using a flat light window may result in strong backlighting, affecting the internal system. Therefore, adding a sealing method to the light window is not suitable.
[0004] Before operating in orbit, the instrument will be affected by factors such as vibration and temperature changes, and the lunar surface is also a high-vacuum environment. These factors can cause changes in some of the instrument's performance and characteristics, thus affecting the spectral detection results. To ensure the accuracy of the detection, the instrument's spectral characteristics need to be calibrated in orbit. This is usually achieved using external calibration sources, such as standard light sources or diffuse reflection color charts. However, this requires adding extra components to the entire lunar probe, increasing design complexity and the difficulty of the mission process. Summary of the Invention
[0005] The purpose of this invention is to provide a pointing component and a method of use for remote Raman spectroscopy detection on the moon, so as to solve the technical problem in the prior art that it is impossible to simultaneously and effectively achieve detection pointing adjustment, on-orbit calibration and lunar dust protection without adding additional components.
[0006] To achieve the above objectives, the present invention employs the following technical solution: In a first aspect, this application discloses a pointing component for remote Raman spectroscopy detection on the moon, comprising: a support component, which is installed in the optical path of the detection instrument; a stepper motor is disposed below the support component; a rotating spindle is disposed on the support component; the stepper motor and the rotating spindle are connected through a transmission component; the rotating spindle is parallel to the output optical axis of the detection instrument; a reflector frame is fixedly connected to one end of the rotating spindle; a reflector is fixed on the reflector frame at a 45° angle to the axis of the rotating spindle; a dust cover is also disposed on the reflector frame above the reflector; a partial outer shell is disposed outside the dust cover; the arc surface on the inner side of the partial outer shell is adapted to the dust cover to form a closed state of the light outlet; mineral samples for on-orbit spectral calibration are arranged next to the installation position of the support component; the pointing component rotates to refract light onto the mineral samples.
[0007] Preferably, the support assembly includes a support frame and a bearing frame; the support frame includes a flat plate and a vertical plate, the vertical plate is on one side of the upper surface of the flat plate, the bearing frame is fixed on the other side of the upper surface of the flat plate, the rotating spindle is fixed on the vertical plate and the bearing frame, one end of the transmission assembly is disposed on the rotating spindle between the vertical plate and the bearing frame, a stepper motor is fixed below the flat plate, and the output end of the stepper motor passes through the flat plate and is connected to the other end of the transmission assembly; the reference position calibration assembly is fixed on the top of the bearing frame and the transmission assembly on the rotating spindle respectively.
[0008] Preferably, the rotating spindle and the vertical plate are connected by a first angular contact ball bearing, and a first bearing washer is provided between the first angular contact ball bearing and the vertical plate; the rotating spindle and the bearing frame are connected by a second angular contact ball bearing, and a second bearing washer is provided between the second angular contact ball bearing and the bearing frame; the second angular contact ball bearing and the first angular contact ball bearing are installed back-to-back.
[0009] Preferably, the transmission assembly includes a worm gear and a worm. The worm gear is mounted on a rotating main shaft and meshes with the worm. The worm is connected to the output end of a stepper motor. A reference position calibration component is mounted on the worm gear, and the reference position calibration component rotates with the worm gear.
[0010] Preferably, the reference position calibration component includes a Hall sensing circuit, a Hall device, and several magnets; the Hall sensing circuit is disposed on the support component, the Hall device is disposed within the Hall sensing circuit, and the several magnets are arranged on the transmission component and rotate with the transmission component; when the magnets rotate with the transmission component to be opposite to the Hall device, the Hall device is used to obtain a magnetic induction signal, which, in conjunction with the magnets, is used to calibrate the reference position.
[0011] Preferably, the reflector frame includes a rotating shaft and a 45° inclined plane fixing frame, which are integrated into one piece. The rotating shaft is sleeved with the rotating main shaft and fixed on the rotating main shaft by a first set screw. The reflector is installed in the 45° inclined plane fixing frame by integrated lugs on both sides.
[0012] Preferably, the dust cover includes a rotating bushing and an arc-shaped shielding surface, which are designed as an integrated unit. The rotating bushing is nested in the outer layer of the reflector frame and fixed to the rotating main shaft by a second set screw. The arc-shaped shielding surface is located on the back of the reflector.
[0013] Secondly, this application discloses a lunar remote Raman spectroscopy detection instrument, which is equipped with a pointing component for lunar remote Raman spectroscopy detection as described in any one of the above claims.
[0014] Thirdly, this application discloses a method for using the pointing component for remote Raman spectroscopy detection on the moon as described in any one of the above claims, comprising: The stepper motor drives the rotating spindle to rotate through the transmission assembly; the reference position calibration component on the transmission assembly rotates with the transmission assembly and cooperates with the reference position calibration component on the support assembly to achieve reference position calibration; The rotating spindle drives the coaxially mounted reflector frame to rotate, which in turn drives the reflector to rotate, causing the light to be vertically refracted to the inside or outside of the instrument for continuous scanning. The dust cover rotates synchronously, and when the light is vertically refracted to the inside of the instrument, the dust cover and the partial outer shell form a closed light outlet to block lunar dust and shield against background light interference.
[0015] Preferably, the transmission assembly includes a worm gear and a worm; the reference position calibration assembly includes a Hall effect sensing circuit, a Hall effect device, and several magnets; the Hall effect sensing circuit is disposed on the support assembly, the Hall effect device is welded inside the Hall effect sensing circuit, and several magnets are arranged on the worm gear, including: The stepper motor drives the worm gear through a worm, which in turn drives the rotating spindle to rotate. The magnet rotates with the worm gear and works with the Hall effect device on the support assembly to achieve reference position calibration. The rotating spindle drives the coaxially mounted reflector frame to rotate, which in turn drives the reflector to rotate, causing the light to be vertically refracted to the inside or outside of the instrument for continuous scanning. The dust cover rotates synchronously, and when the light is vertically refracted to the inside of the instrument, the dust cover and the partial outer shell form a closed light outlet to block lunar dust and shield against background light interference.
[0016] Compared with the prior art, the present invention has the following beneficial effects: This application integrates the reflector, dust cover, and rotating spindle into a single unit, driven synchronously by a single motor, achieving the organic integration of three core functions: target pointing and scanning, on-orbit spectral calibration, and lunar dust protection. This design significantly reduces the number and complexity of components, lowers the overall weight, size, and potential failure points of the mechanism, making it particularly suitable for lunar exploration missions with extremely high requirements for weight, space, and reliability. The parallel alignment of the rotating spindle with the instrument's output optical axis, combined with precision control driven by a stepper motor through a high-reduction-ratio transmission assembly, enables the reflector to rotate stably and accurately around the optical axis. The reflector is fixed at a 45° angle, allowing for vertical changes in the light path direction, thereby achieving accurate pointing and scanning of targets at different locations on the lunar surface, expanding the instrument's detection range and flexibility. The adaptable design of the dust cover and the partial outer shell allows the dust cover to completely close the light outlet at specific rotation angles, forming a physical barrier. This mechanism effectively isolates the highly corrosive and adhesive lunar dust from the lunar environment, preventing it from contaminating critical optical components such as the reflector and ensuring the long-term stability of the optical system's cleanliness and detection performance. Mineral standards for on-orbit spectral calibration are arranged next to the support components. When the rotating spindle drives the reflector to a specific angle, the emitted laser light is reflected onto the standard mineral standard, thereby exciting and acquiring its spectrum, thus calibrating the instrument's spectral characteristics. This enables convenient, regular, and externally independent on-orbit spectral calibration, allowing real-time correction of spectral drift caused by environmental changes and performance degradation, ensuring the accuracy and reliability of the acquired remote Raman spectral data. The design using a rotating mechanism and reflector simultaneously achieves three functions: target pointing, lunar dust protection, and on-orbit spectral self-calibration, without the need for complex mode switching or additional independent mechanisms. This integrated design simplifies the system operation process, improves the automation level and overall efficiency of the detection mission, and perfectly meets the key requirements of multi-task integration, high reliability, and autonomous operation in remote Raman spectral detection on the lunar surface.
[0017] Furthermore, since the transmission kinematic pair uses a worm gear and worm shaft, it has a self-locking capability and can adapt to the mechanical vibration environment that aerospace equipment needs to undergo, such as rocket launches. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the three-dimensional structure from the right side view of an embodiment of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure from the left side of an embodiment of the present invention; Figure 3 This is a two-dimensional sectional view of an embodiment of the present invention; Figure 4 This is a schematic diagram demonstrating the dustproof function of an embodiment of the present invention; Figure 5 This is a schematic diagram showing the location of the calibration component in an embodiment of the present invention; Figure 6 This is a schematic diagram of the dust cover structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the reflector frame structure according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the location of mineral standard samples in an embodiment of the present invention.
[0020] Wherein: 1-Support frame; 2-Bearing frame; 3-Rotating spindle; 4-First angular contact ball bearing; 5-Second angular contact ball bearing; 6-First bearing washer; 7-Second bearing washer; 8-Reflector frame; 9-Reflector; 10-Stepper motor; 11-Worm gear; 12-Worm; 13-Dust cover; 14-Magnet; 15-Pin; 16-First set screw; 17-Second set screw; 18-Conical pin; 19-Hall effect sensor circuit; 20-Hall effect device; 21-Partial housing; 22-Mineral standard sample. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.
[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0024] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0025] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0026] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.
[0027] The present invention will now be described in further detail with reference to the accompanying drawings: See Figures 1-4This application discloses a pointing component for remote Raman spectroscopy detection on the moon, comprising: a support component installed within the optical path of the detection instrument; a stepper motor 10 disposed below the support component; a rotating spindle 3 disposed on the support component; the stepper motor 10 and the rotating spindle 3 connected via a transmission component; the rotating spindle 3 being parallel to the output optical axis of the detection instrument; a reflector frame 8 fixedly connected to one end of the rotating spindle 3; a reflector 9 fixedly mounted on the reflector frame 8 at a 45° angle to the axis of the rotating spindle 3; a dust cover 13 disposed on the reflector frame 8 above the reflector 9; a partial outer shell 21 disposed outside the dust cover 13; the arc surface of the inner side of the partial outer shell 21 being adapted to the dust cover 13 to form a closed light outlet; and mineral samples 22 for on-orbit spectral calibration arranged next to the mounting position of the support component; the rotation of the pointing component being used to refract light onto the mineral samples 22. The pointing component disclosed in this application is an integrated mechanism design that simultaneously achieves three functions through the rotation of the main shaft (rotating main shaft 3): pointing scanning, on-orbit spectral calibration, and dust protection. These three functions are arranged along the rotation path of the pointing mechanism and are implemented separately at different rotation angles. It integrates the reflector 9 and the dust cover 13 into a single unit that rotates synchronously, meeting the needs of detection at different angles and also allowing the dust cover 13 to close for dust prevention at a specific rotation angle. Simultaneously, the mineral standard sample 22 placed inside the device can also be used to acquire on-orbit calibration spectra at specific rotation angles. This method, which simultaneously achieves detection pointing adjustment, on-orbit spectral calibration, and lunar dust protection, solves the key requirements of remote Raman spectroscopy detection on the lunar surface.
[0028] In some embodiments, see Figure 1 , Figure 2 The support assembly includes a support frame 1 and a bearing frame 2; the support frame 1 includes a flat plate and a vertical plate, the vertical plate is on one side of the upper surface of the flat plate, the bearing frame 2 is fixed on the other side of the upper surface of the flat plate, the rotating spindle 3 is fixed on the vertical plate and the bearing frame 2, one end of the transmission assembly is set on the rotating spindle 3 between the vertical plate and the bearing frame 2, the stepper motor 10 is fixed below the flat plate, and the output end of the stepper motor 10 passes through the flat plate and is connected to the other end of the transmission assembly; the reference position calibration assembly is fixed on the top of the bearing frame 2 and the transmission assembly on the rotating spindle 3 respectively.
[0029] In some embodiments, see Figure 3The rotating spindle 3 is connected to the vertical plate via a first angular contact ball bearing 4, with a first bearing washer 6 placed between the first angular contact ball bearing 4 and the vertical plate. The rotating spindle 3 and the bearing housing 2 are connected via a second angular contact ball bearing 5, with a second bearing washer 7 placed between the second angular contact ball bearing 5 and the bearing housing 2. The second angular contact ball bearing 5 and the first angular contact ball bearing 4 are installed back-to-back. After back-to-back installation and pre-tightening, the two bearings form a very stable support unit, greatly improving the system's resistance to bending and torsional deformation, i.e., radial and axial rigidity. This ensures that the spindle will hardly experience any slight deflection or axial movement when starting, stopping, or subjected to external forces, thereby guaranteeing extremely high repeatability and stability of the reflector mounted at the end of the spindle.
[0030] In some embodiments, the transmission assembly includes a worm gear 11 and a worm 12. The worm gear 11 is mounted on the rotating spindle 3 and meshes with the worm 12. The worm 12 is connected to the output end of the stepper motor 10. A reference position calibration component is mounted on the worm gear 11, and the calibration component rotates with the worm gear 11. The transmission kinematic pair using a worm gear and worm has self-locking capability and can adapt to the mechanical vibration environment such as rocket launch that aerospace equipment needs to undergo.
[0031] In some embodiments, the reference position calibration component includes a Hall effect sensing circuit 19, a Hall effect device 20, and several magnets 14. The Hall effect sensing circuit 19 is disposed on the support component, the Hall effect device 20 is disposed within the Hall effect sensing circuit 19, and the several magnets 14 are arranged on the transmission component and rotate with the transmission component. When the magnets 14 rotate with the transmission component to be opposite the Hall effect device 20, the Hall effect device 20 can obtain a magnetic induction signal, which, in conjunction with the magnets 14, is used to calibrate the reference position. By integrating the reference position calibration function into the existing rotating support structure, instead of adding an additional independent calibration mechanism, space and overall device weight are saved, and system complexity is reduced.
[0032] In some embodiments, see Figure 7 The reflector frame 8 includes a rotating shaft and a 45° inclined plane fixing frame, which are integrated into one unit. The rotating shaft is sleeved with the rotating main shaft 3 and fixed to the rotating main shaft 3 by a first set screw 16. The reflector 9 is mounted in the 45° inclined plane fixing frame by integrated lugs on both sides. By integrating the frame that carries the reflector with the shaft that transmits power, the cumulative error and loss of connection stiffness that may be caused by the assembly of multiple parts are fundamentally eliminated. Since the 45° mounting reference surface of the reflector frame is an integrated part of the frame, and the frame is rigidly connected to the main shaft by a set screw, the pointing reference of the entire optical path is very stable.
[0033] In some embodiments, see Figure 6The dust cover 13 includes a rotating bushing and an arc-shaped shielding surface. The rotating bushing and the arc-shaped shielding surface are designed as an integrated unit. The rotating bushing is nested in the outer layer of the reflector frame 8 and is fixed to the rotating main shaft 3 by the second set screw 17. The arc-shaped shielding surface is located on the back of the reflector 9.
[0034] This application also discloses a lunar remote Raman spectroscopy detection instrument, which is equipped with a pointing component for lunar remote Raman spectroscopy detection as described in any one of the above claims.
[0035] This application also discloses a method of using the pointing component for remote Raman spectroscopy detection on the moon as described in any one of the above claims, including: The stepper motor 10 drives the rotating spindle 3 to rotate through the transmission assembly; the reference position calibration component on the transmission assembly rotates with the transmission assembly and cooperates with the reference position calibration component on the support assembly to achieve reference position calibration. The rotating spindle 3 drives the coaxially mounted reflector frame 8 to rotate, which in turn drives the reflector 9 to rotate, so that the light is vertically refracted to the inside or outside of the instrument to achieve continuous scanning; the dust cover 13 rotates synchronously, and when the light is vertically refracted to the inside of the instrument, the dust cover 13 and the partial outer shell 21 form a closed state of the light outlet, which is used to block lunar dust and shield background light interference.
[0036] In some embodiments, the transmission assembly includes a worm gear 11 and a worm 12; see also Figure 5 The reference position calibration component includes a Hall effect sensing circuit 19, a Hall effect device 20, and several magnets 14. The Hall effect sensing circuit 19 is mounted on the support assembly, the Hall effect device 20 is welded inside the Hall effect sensing circuit 19, and the several magnets 14 are arranged on the worm gear 11, including: The stepper motor 10 drives the worm wheel 11 through the worm gear 12, and the worm wheel 11 drives the rotating spindle 3 to rotate; the magnet 14 rotates with the worm wheel 11 and cooperates with the Hall device 20 on the support assembly to achieve the reference position calibration. The rotating spindle 3 drives the coaxially mounted reflector frame 8 to rotate, which in turn drives the reflector 9 to rotate, so that the light is vertically refracted to the inside or outside of the instrument to achieve continuous scanning; the dust cover 13 rotates synchronously, and when the light is vertically refracted to the inside of the instrument, the dust cover 13 and the partial outer shell 21 form a closed state of the light outlet, which is used to block lunar dust and shield background light interference.
[0037] In some embodiments, see Figures 1-8This invention discloses a pointing assembly for remote Raman spectroscopy detection on the moon, comprising: a support frame 1, a bearing frame 2, a rotating spindle 3, a first angular contact ball bearing 4, a second angular contact ball bearing 5, a first bearing washer 6, a second bearing washer 7, a reflector frame 8, a reflector 9, a stepper motor 10, a worm gear 11, a worm 12, a dust cover 13, a magnet 14, a pin 15, a first set screw 16, a second set screw 17, a conical pin 18, a Hall effect sensing circuit 19, a Hall effect device 20, a partial outer shell 21, and a mineral standard sample 22. The main idea of this invention is to utilize the rotational motion of the pointing assembly to achieve optical path scanning, and simultaneously use this rotational motion to achieve on-orbit spectral calibration and dust prevention.
[0038] The present invention is a mechanism that rotates a main shaft 3 and drives a reflector 9 to move. It is installed in the optical path of the instrument, and the main shaft 3 is parallel to the optical axis. The support frame 1 is a flat plate plus a vertical plate structure, wherein a first angular contact ball bearing 4 is installed in the vertical plate, and the preload is adjusted by the first bearing washer 6. The bearing bracket 2 is installed on the base plate of the support frame 1, and the second angular contact ball bearing 5 is installed on it. It is paired with the first angular contact ball bearing 4 in the support frame 1 and installed back-to-back. The preload is adjusted by the second bearing washer 7. In order to ensure the installation accuracy of the bearing pair, the bearing bracket 2 needs to be installed on the support frame 1 for assembly and then removed. After the shaft system installation is completed, it is reset using the pin 15. The first angular contact ball bearing 4 and the second angular contact ball bearing 5 are respectively installed into the rotating main shaft 3 from both ends. The turbine 11 is installed in the middle of the rotating main shaft 3, and the reflector frame 8 is installed at one end of the main shaft. The reflector frame 8 is an integrated structure with a rotating shaft and a 45° bevel, used to install the reflector 9 and to provide protection. It is sleeved with the rotating main shaft 3 and fixed to the rotating main shaft 3 by the first set screw 16. The reflector 9 is mounted inside the reflector frame 8 via integrated lugs on both sides to reflect the light path; The dust cover 13 is a component that shields against lunar dust. It is an integrated structure with an arc surface on a rotating bushing. It is nested on the outer layer of the rotating shaft of the reflector frame 8 and fixed to the rotating main shaft 3 by the second set screw 17. After it is installed, the arc surface is exactly on the back of the reflector 9. Stepper motor 10 provides torque, and its output shaft is sleeved together with worm gear 12 and fixed by tapered pin 18; The worm gear 11 and the worm 12 form a kinematic pair; the worm gear 11 transmits power to the rotating spindle 3 through a flat key; there are three specific positions on the worm gear 11 where cubic magnets 14 can be installed, which are selected according to the actual phase of the worm gear 11 and the zeroing strategy; the magnets 14 rotate along the worm gear 11, and their travel trajectory just sweeps over the Hall device 20 installed above the bearing bracket 2, thus achieving the calibration of the reference position; The partial housing 21 is the outer enclosure structure of the pointing component. It is placed outside the pointing component and together with the rest of the instrument housing to form the outer enclosure (the rest of the housing has been hidden in the schematic diagram). The arc surface on the inner side of the partial housing matches the arc surface of the dust cover 13 to form a closed state of the light outlet. The working principle of this invention is as follows: a stepper motor drives a worm gear to rotate, the worm gear drives a worm wheel to rotate, and the worm wheel drives a rotating spindle to rotate via a key transmission; the reflector frame is fixed to the rotating spindle and also rotates accordingly. Since the reflector frame is at a 45° angle to the rotating spindle, the light is perpendicularly refracted by the reflector, and the light will produce a continuous scanning effect as the direction of rotation changes. The rotation center of the dust cover is coaxial with the main rotation axis. It is located on the back of the reflector frame and rotates together with it. At a certain angle, the arc surface of the dust cover just blocks the light outlet of the outer shell, forming an arc fit with the arc surface on the inner side of the outer shell to achieve a closed state to prevent lunar dust from entering. When the pointing component continues to rotate to a certain angle, it can just turn the light path to the mineral standard sample 22 placed inside the instrument, obtain the standard sample spectrum to realize the instrument's self-calibration. Since the standard sample is placed inside the instrument, the dust cover is also in a closed state at this time, which helps to shield the interference of background light and improve the accuracy of calibration.
[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A pointing component for remote Raman spectroscopy detection on the moon, characterized in that, include: The support assembly is installed in the optical path of the detector. A stepper motor (10) is set below the support assembly, and a rotating spindle (3) is set on the support assembly. The stepper motor (10) and the rotating spindle (3) are connected through a transmission assembly. The rotating spindle (3) is parallel to the output optical axis of the detector. A reflector frame (8) is fixed to one end of the rotating spindle (3). A reflector (9) is fixed on the reflector frame (8) at a 45° angle to the axis of the rotating spindle (3). A dust cover (13) is also set on the reflector frame (8) above the reflector (9). A partial shell (21) is provided outside the dust cover (13). The arc surface inside the partial shell (21) is adapted to the dust cover (13) to form a closed state of the light outlet. Mineral samples (22) for on-orbit spectral calibration are arranged next to the installation position of the support assembly. The rotation of the pointing assembly is used to refract the light onto the mineral sample (22).
2. A pointing component for remote Raman spectroscopy detection on the moon according to claim 1, characterized in that, The support assembly includes a support frame (1) and a bearing frame (2); the support frame (1) includes a flat plate and a vertical plate, the vertical plate is on one side of the upper surface of the flat plate, the bearing frame (2) is fixed on the other side of the upper surface of the flat plate, the rotating spindle (3) is fixed on the vertical plate and the bearing frame (2), one end of the transmission assembly is set on the rotating spindle (3) between the vertical plate and the bearing frame (2), the stepper motor (10) is fixed below the flat plate, and the output end of the stepper motor (10) passes through the flat plate and is connected to the other end of the transmission assembly; the reference position calibration assembly is fixed on the top of the bearing frame (2) and the transmission assembly on the rotating spindle (3).
3. A pointing component for remote Raman spectroscopy detection on the moon according to claim 2, characterized in that, The rotating spindle (3) is connected to the vertical plate by a first angular contact ball bearing (4), and a first bearing washer (6) is provided between the first angular contact ball bearing (4) and the vertical plate; the rotating spindle (3) and the bearing frame (2) are connected by a second angular contact ball bearing (5), and a second bearing washer (7) is provided between the second angular contact ball bearing (5) and the bearing frame (2); the second angular contact ball bearing (5) and the first angular contact ball bearing (4) are installed back-to-back.
4. A pointing component for remote Raman spectroscopy detection on the moon according to claim 1, characterized in that, The transmission assembly includes a worm wheel (11) and a worm (12). The worm wheel (11) is mounted on the rotating spindle (3) and meshes with the worm (12). The worm (12) is connected to the output end of the stepper motor (10). A reference position calibration component is mounted on the worm wheel (11), and the reference position calibration component rotates with the worm wheel (11).
5. A pointing component for remote Raman spectroscopy detection on the moon according to claim 1, characterized in that, The reference position calibration component includes a Hall sensing circuit (19), a Hall device (20), and several magnets (14); the Hall sensing circuit (19) is mounted on the support component, the Hall device (20) is mounted inside the Hall sensing circuit (19), and several magnets (14) are mounted on the transmission component and rotate with the transmission component; when the magnets (14) rotate with the transmission component to be opposite to the Hall device (20), the Hall device (20) and the magnets (14) cooperate to achieve the calibration of the reference position.
6. A pointing component for remote Raman spectroscopy detection on the moon according to claim 1, characterized in that, The reflector frame (8) includes a rotating shaft and a 45° inclined plane fixing frame. The rotating shaft and the 45° inclined plane fixing frame are designed as an integrated unit. The rotating shaft is sleeved with the rotating main shaft (3) and fixed on the rotating main shaft (3) by the first set screw (16). The reflector (9) is installed in the 45° inclined plane fixing frame by the integrated lugs on both sides.
7. A pointing component for remote Raman spectroscopy detection on the moon according to claim 1, characterized in that, The dust cover (13) includes a rotating bushing and an arc-shaped shielding surface. The rotating bushing and the arc-shaped shielding surface are designed as an integrated unit. The rotating bushing is nested in the outer layer of the reflector frame (8) and fixed to the rotating main shaft (3) by the second set screw (17). The arc-shaped shielding surface is located on the back of the reflector (9).
8. An instrument for remote Raman spectroscopy detection on the moon, characterized in that, The device is equipped with a pointing component for remote Raman spectroscopy detection on the moon as described in any one of claims 1 to 7.
9. A method of using the pointing component for remote Raman spectroscopy detection on the moon as described in any one of claims 1 to 7, characterized in that, include: The stepper motor (10) drives the rotating spindle (3) to rotate through the transmission assembly; the reference position calibration component on the transmission assembly rotates with the transmission assembly and cooperates with the reference position calibration component on the support assembly to achieve reference position calibration; The rotating spindle (3) drives the coaxially set reflector frame (8) to rotate, which in turn drives the reflector (9) to rotate, so that the light is vertically refracted to the inside or outside of the instrument to achieve continuous scanning; the dust cover (13) rotates synchronously, and when the light is vertically refracted to the inside of the instrument, the dust cover (13) and the partial outer shell (21) form a closed state of the light outlet, which is used to block lunar dust and shield the background light interference.
10. A method of using a pointing component for remote Raman spectroscopy detection on the moon according to claim 9, characterized in that, The transmission assembly includes a worm gear (11) and a worm (12); the reference position calibration assembly includes a Hall sensor circuit (19), a Hall device (20), and several magnets (14); the Hall sensor circuit (19) is mounted on the support assembly, the Hall device (20) is welded inside the Hall sensor circuit (19), and several magnets (14) are arranged on the worm gear (11), including: The stepper motor (10) drives the worm wheel (11) through the worm (12), and the worm wheel (11) drives the rotating spindle (3) to rotate; the magnet (14) rotates with the worm wheel (11) and cooperates with the Hall device (20) on the support assembly to achieve the reference position calibration; The rotating spindle (3) drives the coaxially set reflector frame (8) to rotate, which in turn drives the reflector (9) to rotate, so that the light is vertically refracted to the inside or outside of the instrument to achieve continuous scanning; the dust cover (13) rotates synchronously, and when the light is vertically refracted to the inside of the instrument, the dust cover (13) and the partial outer shell (21) form a closed state of the light outlet, which is used to block lunar dust and shield the background light interference.