Field BRDF spectral data rapid acquisition device

Abstract

The invention provides a field BRDF spectral data rapid acquisition device, which relates to the technical field of remote sensing devices, and comprises a ground measurement integrated device and a controller, the ground measurement integrated device comprises a fixing rod, a vertical driving motor, a vertical motor control line, an optical fiber arm assembly, a connecting rod, an optical fiber, a horizontal disc, an azimuth angle pointer, a horizontal disc horizontal driving motor, a horizontal disc motor control line and a control box. The controller is used for controlling the horizontal drive motor and the vertical drive motor of the horizontal disc to operate according to a first target step length and a second target step length respectively, and controlling the spectrometer to carry out spectrum acquisition; the rapid field BRDF spectral data acquisition device is light, easy to carry, easy to operate, short in measurement process time and wide in application range.

Description

Technical Field

[0001] The invention relates to the technical field of remote sensing devices, and in particular to a field BRDF spectrum data rapid acquisition device. Background Art

[0002] BRDF measurement is the process of experimentally measuring and analyzing the Bidirectional Reflectance Distribution Function (BRDF), which is an important physical quantity that describes the reflective characteristics of an object's surface.

[0003] The technology of BRDF measurement, outside the field of remote sensing technology, is basically concentrated in the laboratory and completed through turntables and robotic arms. These devices have high measurement accuracy but the cost is also relatively high. The biggest problem is that they cannot be applied to field BRDF measurements in remote sensing large hemispherical spaces.

[0004] It can be seen that the remote sensing data measurement method in the related art has the technical problem of being unsuitable for field BRDF measurement. Summary of the invention

[0005] The present invention provides a field BRDF spectrum data rapid acquisition device, which is used to solve the defect that the remote sensing data measurement method in the prior art is not suitable for field BRDF measurement, and realizes a field BRDF spectrum data rapid acquisition device which is light, easy to carry, easy to operate, has a short measurement process time and a wide range of applications.

[0006] The present invention provides a field BRDF spectrum data rapid acquisition device, comprising a ground measurement integrated device and a controller; The ground measurement integrated device comprises: The fixing rod comprises: a primary fixing rod and a secondary fixing rod; the primary fixing rod can be installed in the secondary fixing rod, and the primary fixing rod and the secondary fixing rod are fixed by a latch.

[0007] A vertical drive motor and a vertical motor control line, wherein the vertical drive motor is connected to the primary fixing rod and moves up and down along the primary fixing rod at a first target step length through a thread, and the vertical motor control line connects the vertical drive motor and the controller to provide power supply and signal control; An optical fiber arm assembly, the optical fiber arm assembly comprising: an optical fiber arm and an optical fiber fixed probe; the bottom end of the optical fiber arm is connected to the primary fixed rod through a sleeve, and the optical fiber fixed probe is sleeved on the top end of the optical fiber arm through a thread or a buckle; A connecting rod, both ends of which are connected to the vertical drive motor and the optical fiber arm through movable bolts; An optical fiber, wherein the optical fiber is installed in the fixing rod and the optical fiber arm assembly, a first end of the optical fiber is connected to the optical fiber fixing probe, and a second end of the optical fiber is connected to a spectrometer in the controller; A horizontal plate and an azimuth pointer, wherein the horizontal plate is vertically connected to the primary fixing rod through a damper, and the azimuth pointer is vertically and rigidly connected to the primary fixing rod and is placed close to the horizontal plate; A horizontal drive motor for a horizontal disk and a control line for the horizontal disk motor, wherein the horizontal drive motor for the horizontal disk is mounted on the first-level fixed rod through a damper and is vertically rigidly connected to the horizontal disk; the horizontal drive motor for the horizontal disk is used to drive the horizontal disk to rotate around the first-level fixed rod according to a second target step length; the control line for the horizontal disk motor connects the horizontal drive motor for the horizontal disk with the controller to provide power supply and signal control; A control box, the control box comprising: a mobile power supply compartment, a spectrometer compartment, a controller compartment and a cable compartment; the control box is connected to the secondary fixing rod; The controller is used to control the horizontal drive motor of the horizontal plate and the vertical drive motor to operate according to the first target step length and the second target step length respectively; and control the spectrometer to collect spectra.

[0008] According to a field BRDF spectrum data rapid acquisition device provided by the present invention, the optical fiber arm comprises: a first-stage rod and a second-stage rod, a stepping track is installed on the first-stage rod, and the first-stage rod can be retracted into the second-stage rod.

[0009] According to a field BRDF spectral data rapid acquisition device provided by the present invention, the optical fiber arm assembly also includes: an optical fiber fixed probe drive motor, and the optical fiber fixed probe drive motor is used to drive the optical fiber fixed probe to move on the first-level rod according to the third target step limit.

[0010] According to a field BRDF spectral data rapid acquisition device provided by the present invention, the ground measurement integrated device also includes: a fixed base, wherein the fixed base includes: a counterweight tray, a fixed disk group, a fixed bracket and a horizontal adjustment knob assembly; the control box is placed on the counterweight tray, and the counterweight tray is rigidly vertically connected to the fixed disk group; the fixed bracket is connected to the fixed disk group by a folding rod; the horizontal adjustment knob assembly is threadedly connected to the bottom of the fixed disk group, which is used to adjust the height of the fixed disk group at different positions.

[0011] According to a field BRDF spectral data rapid acquisition device provided by the present invention, the ground measurement integrated device also includes: a field of view image collector and a video acquisition control line, the field of view image collector is installed in the optical fiber fixed probe, the field of view image collector is used for image acquisition, and the video acquisition control line connects the field of view image collector and the controller to provide power supply and signal control.

[0012] According to a field BRDF spectral data rapid acquisition device provided by the present invention, the field image collector includes: a micro camera, wherein the micro camera is used to collect images and store them in a preset format when receiving a trigger signal.

[0013] According to a field BRDF spectral data rapid acquisition device provided by the present invention, the controller is connected to the horizontal disk motor control line, the vertical motor control line, the video acquisition control line and the spectrometer signal line.

[0014] According to a field BRDF spectral data rapid acquisition device provided by the present invention, the controller is also connected to a control signal line and a power line, the control signal line is used to transmit a control signal, and the power line is used to supply power to the controller.

[0015] According to a field BRDF spectrum data rapid acquisition device provided by the present invention, the level plate comprises: a 360-degree angle scale and a level bubble, and the level bubble is used to adjust the horizontal state of the level plate.

[0016] The field BRDF spectral data rapid acquisition device provided by the present invention can realize flexible adjustment of height to adapt to different field environments and measurement requirements through the pin fixing design of the primary fixing rod and the secondary fixing rod, and the function of the vertical drive motor driving the optical fiber arm assembly to move up and down along the primary fixing rod; the vertical drive motor and the horizontal drive motor of the horizontal plate are both precisely controlled by the controller, and can operate according to the preset first target step size and second target step size. This precise control capability ensures the accuracy and consistency of spectral data acquisition and improves the reliability of measurement results; the design of the fiber optic arm assembly enables the fiber optic fixed probe to stably and flexibly point to the target area, thereby effectively collecting spectral data, and the connection between the optical fiber and the spectrometer ensures real-time transmission and processing of data, improving the efficiency of data acquisition; the control box integrates the mobile power compartment, spectrometer compartment, controller compartment and cable compartment, making the entire device more compact and portable, which is convenient for users to quickly deploy and carry out mobile measurements in field environments. Therefore, the field BRDF spectral data rapid acquisition device provides technical support for the rapid and automatic acquisition of field spectral data with its high flexibility and adjustability, precise measurement and control, efficient data acquisition capability, portability and durability, and easy operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced one by one below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the field BRDF spectrum data rapid acquisition device provided by the present invention.

[0019] Figure 2 It is a schematic diagram of controller connection provided by the present invention.

[0020] Figure 3 It is a schematic diagram of the overall structure of the field BRDF spectrum data rapid acquisition device provided by the present invention.

[0021] Figure 4 It is a flow chart of a spectrum measurement control process provided by the present invention.

[0022] Figure 5 It is a schematic diagram of hemispherical space measurement projection provided by the present invention. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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.

[0024] The technology of BRDF measurement, outside the field of remote sensing technology, is basically concentrated in the laboratory and completed through turntables and robotic arms. These devices have high measurement accuracy but the cost is also relatively high. The biggest problem is that they cannot be applied to field BRDF measurements in remote sensing large hemispherical spaces.

[0025] The devices developed for remote sensing applications are mainly divided into three categories. One is based on ground circular rails and space slides to realize the positioning and measurement of detectors (such as spectrometer fiber probes) in hemispherical space. This method is a more traditional measurement method, mature and relatively reliable, but it also has obvious defects, namely, it is bulky and relatively cumbersome to operate and install. In addition, the size of the slide also limits the range of spatial measurements that can be completed, and the shadows created by the slide will also affect the measurement results.

[0026] The other type is to change the spatial slide rail into a lever-arm structure, which expands its measurement range and is relatively convenient. However, in order to improve convenience, it increases the burden of operation and has a low degree of automation. During the measurement process, all device components are manually adjusted, which increases the measurement process time and unreliability.

[0027] Another type is to combine a slide rail with a lever-arm structure, using tracks and track cars to move the detector to the designed position in the hemispherical space. This is an innovative solution, but the use of slide rails will sacrifice convenience and measurement space range to a certain extent, and the degree of automation needs to be improved.

[0028] In view of these problems, the (automatic) field BRDF spectral data rapid acquisition device provided by the present invention completely abandons the ground circular track and the space semicircular slide rail, adopts a two-stage lightweight column-pole structure, builds a field hemispherical space BRDF measurement device, relies on a retractable optical fiber arm to carry an angle-adjustable optical fiber and an optical fiber field of view image acquisition device, and edits the measurement control instructions through computer programming. The controller issues a control signal to drive the horizontal drive motor of the horizontal plate to quickly adjust the azimuth angle of the optical fiber arm, and uses the vertical drive motor to quickly adjust the zenith angle of the optical fiber arm. The signal triggers the spectrometer to collect the spectrum, and then further automatically adjusts the azimuth and zenith angle according to the control instruction to enter the next positioning point for measurement until all the measurement rounds (instruction blocks) are completed.

[0029] refer to Figure 1 , Figure 1 Schematic diagram of the structure of the field BRDF spectrum data rapid acquisition device provided by the present invention, such as Figure 1 As shown, the device includes the following ground measurement integrated device and controller: The ground measurement integrated device includes: The fixing rod 11 includes: a primary fixing rod 111 and a secondary fixing rod 112; the primary fixing rod 111 can be inserted into the secondary fixing rod 112, and the primary fixing rod 111 and the secondary fixing rod 112 are fixed by a latch.

[0030] A vertical drive motor 12 and a vertical motor control line 13, the vertical drive motor 12 is connected to the primary fixing rod 111, and moves up and down along the primary fixing rod 111 with a first target step length through a thread, and the vertical motor control line 13 connects the vertical drive motor 12 and a controller to provide power and signal control; The optical fiber arm assembly 14 includes: an optical fiber arm 141 and an optical fiber fixed probe 142; the bottom end of the optical fiber arm 141 is connected to the primary fixed rod 111 through a sleeve, and the optical fiber fixed probe 142 is sleeved on the top end of the optical fiber arm 141 through a thread or a buckle; A connecting rod 15, both ends of which are connected to the vertical drive motor 12 and the optical fiber arm 141 through movable bolts; Optical fiber 16, the optical fiber 16 is installed in the fixing rod 11 and the optical fiber arm assembly 14, the first end of the optical fiber 16 is connected to the optical fiber fixing probe 142, and the second end of the optical fiber 16 is connected to the spectrometer in the controller; The horizontal plate 17 and the azimuth pointer 18 are vertically connected to the first-level fixed rod 111 through a damper, and the azimuth pointer 18 is vertically rigidly connected to the first-level fixed rod 111 and is placed close to the horizontal plate; The horizontal disk horizontal drive motor 19 and the horizontal disk motor control line 20, the horizontal disk horizontal drive motor 19 and the first-level fixed rod 111 are mounted through a damper and are vertically rigidly connected to the horizontal disk 17; the horizontal disk horizontal drive motor 19 is used to drive the horizontal disk 17 to rotate around the first-level fixed rod 111 according to the second target step length; the horizontal disk motor control line 20 connects the horizontal disk horizontal drive motor 19 and the controller to provide power supply and signal control; Control box 21, the control box includes: a mobile power supply compartment, a spectrometer compartment, a controller compartment and a cable compartment; the control box is connected to the secondary fixing rod; The controller is used to control the horizontal drive motor 19 and the vertical drive motor 12 of the horizontal plate to operate according to the first target step length and the second target step length respectively; and control the spectrometer to collect spectra.

[0031] In the embodiment of the present invention, the ground measurement integrated device is responsible for equipment support, connection and measurement execution, and is divided into two detachable sections. The first-level fixed rod and its upper component are one section, and the second-level fixed rod, that is, its upper component, is another section. The two sections are stored separately after disassembly, and the upper component of the rod can be further disassembled, but except for repair and maintenance, it can be directly packed without disassembly.

[0032] The fixed rod includes a primary fixed rod (1.5m) and a secondary fixed rod (1.6m). The vertical drive motor, horizontal (scale) plate, fiber arm assembly and horizontal drive motor of the horizontal plate are installed on the primary fixed rod. There is also a second-level fixed rod under the primary fixed rod. The primary fixed rod can be installed in the secondary fixed rod. The two-level rods are fixed by a latch. The two-level rod design reduces the rod length and improves portability. The secondary fixed rod can support an observation height of up to 3.0m (or use a longer rod to increase the observation height). During operation, once the posture and position of the first-level fixed rod are adjusted, it will not move, rotate or extend.

[0033] The vertical drive motor is a lightweight micro motor connected to the primary fixed rod. It can move up and down along the primary fixed rod with a specific step length through the thread. There are upper and lower limiters at the installation position to control its up and down travel. The vertical movement angle of the fiber optic arm is calculated by the thread pitch and the length of the connecting rod, and then its zenith angle is obtained. The travel is related to the length of the connecting rod (line) of the fiber optic arm, which controls the zenith angle range of the fiber optic probe. Subject to the connection method with the connecting rod (line) and the movement range of the drive motor on the vertical rod, the vertical angle of the fiber optic arm can be adjusted from 15° to 90° (zenith angle).

[0034] The power supply and control line of the vertical drive motor share a line (i.e., the vertical motor control line), which is placed in the fixed rod. One end is connected to the vertical drive motor, and the other end enters the control box and connects to the controller. The controller is separately connected to the power supply to provide power and signal control.

[0035] The connecting rod (line) is connected to the optical fiber arm through a movable bolt, and the connecting rod (line) can rotate freely around the movable bolt. The connection method between the connecting rod and the vertical drive motor is the same as that of the optical fiber arm. When the vertical drive motor moves up and down along the primary fixed rod, it drives the connecting rod (line) to move, changes the angle between the optical fiber arm and the horizontal plate, and then adjusts the optical fiber fixed probe to the set observation angle (zenith angle).

[0036] In order to increase the angle adjustment range of the optical fiber arm, the connecting rod can be made of flexible material. In this case, the connecting rod becomes a connecting wire, which is connected to the optical fiber arm in a snap-fit ​​manner. When the connecting wire is used, the vertical drive motor does not need to move along the fixed rod, but is instead driven by the motor to the winder. By shortening the length of the connecting wire, the optical fiber arm is driven to rotate around the sleeve.

[0037] The fiber optic arm assembly consists of a fiber optic arm and a fiber optic fixed probe (including a drive motor). The fiber optic fixed probe is mounted on the top of the fiber optic arm through a thread or a buckle, and the spectrometer fiber is mounted on the side of the fiber optic arm through a fixed buckle. During observation, the optical fiber and the fiber optic fixed probe are fixedly installed, and the optical probe is perpendicular to the fixed probe surface.

[0038] The optical fiber is the optical fiber of the spectrometer, which is placed on the optical fiber arm assembly and the fixed rod. One end is connected to the optical fiber fixed probe, and the other end enters the control box and is connected to the spectrometer. Considering that the optical fiber is not easy to be disassembled and installed frequently, the connection between the optical fiber and the spectrometer is not disassembled unless it is maintained or replaced. After the work is completed, only one end of the optical fiber arm is disassembled, and the optical fiber is coiled and stored together with the spectrometer.

[0039] The optical fiber uses an angle adjustment device in the optical fiber fixed probe to adjust the observation angle of the optical fiber probe.

[0040] The horizontal disk is vertically connected to the first-level fixed rod through a damper, and can be rotated around the rod according to the designed step length (gear pitch) through the motor drive. The azimuth pointer is vertically and rigidly connected to the first-level fixed rod and placed close to the horizontal disk (but they do not affect each other). When working, after the device is leveled (when the level bubble is centered), set the 0° line of the horizontal disk to point to the true north direction.

[0041] The horizontal drive motor of the horizontal disk is connected to the primary fixed rod through a damper set (gear) and is rigidly connected to the horizontal disk vertically. The micro motor drives the horizontal disk to rotate around the primary fixed rod according to the designed step length. The rotation angle of the horizontal disk is calculated through the corresponding relationship of the gear pitch, thereby realizing the adjustment of the observation azimuth. The adjustable angle range of the horizontal disk is 0-360°, and it automatically resets after reaching 360 degrees.

[0042] The horizontal plate motor control line (including the horizontal plate horizontal drive motor power supply and control line) is placed on the fixed rod through a buckle, one end is connected to the motor, and the other end enters the control box and connects to the controller. The controller is separately connected to the power supply to provide power and signal control.

[0043] The control box consists of a mobile power supply (battery) compartment, a spectrometer compartment, a controller compartment, and a cable compartment. During assembly, it is placed on the counterweight tray at equal angles and fixed by a lock. The controller is connected to the power supply to provide power for various motors and micro cameras, connected to the spectrometer to provide trigger signals, and connected to the control computer to send and receive control signals. When the spectrometer has its own computer (such as RS8800), it is not necessary to connect the control computer separately, and the spectrometer computer directly controls the system operation.

[0044] The core component inside the controller is a programmable board, which receives computer control information, connects the horizontal drive motor of the horizontal disk, the vertical drive motor, the spectrometer and the power supply, and is used to control the fixed-step operation of the horizontal drive motor and the vertical drive motor of the horizontal disk and the spectrum acquisition of the spectrometer. The controller receives the control signal and sends a start signal to the horizontal drive motor and the vertical drive motor of the horizontal disk respectively.

[0045] Through the field BRDF spectral data rapid acquisition device provided by the present invention, through the pin fixing design of the primary fixing rod and the secondary fixing rod, and the function of the vertical drive motor driving the optical fiber arm assembly to move up and down along the primary fixing rod, it is possible to achieve flexible adjustment of the height to adapt to different field environments and measurement requirements; the vertical drive motor and the horizontal drive motor of the horizontal plate are both precisely controlled by the controller, and can operate according to the preset first target step size and the second target step size. This precise control capability ensures the accuracy and consistency of spectral data acquisition and improves the reliability of measurement results; the design of the fiber optic arm assembly enables the fiber optic fixed probe to stably and flexibly point to the target area, thereby effectively collecting spectral data, and the connection between the optical fiber and the spectrometer ensures real-time transmission and processing of data, improving the efficiency of data acquisition; the control box integrates the mobile power compartment, spectrometer compartment, controller compartment and cable compartment, making the entire device more compact and portable, which is convenient for users to quickly deploy and carry out mobile measurements in field environments. Therefore, the field BRDF spectral data rapid acquisition device provides technical support for the rapid and automatic acquisition of field spectral data with its high flexibility and adjustability, precise measurement and control, efficient data acquisition capability, portability and durability, and easy operation and maintenance.

[0046] According to the field BRDF spectrum data rapid acquisition device provided by the present invention, the optical fiber arm comprises: A first-stage rod and a second-stage rod, a stepping track is installed on the first-stage rod, and the first-stage rod can be retracted into the second-stage rod.

[0047] In the embodiment of the present invention, the lower end of the second-stage rod of the optical fiber arm is connected to the first-stage fixed rod through a sleeve without damping, so that the optical fiber arm can rotate around the first-stage fixed rod. The optical fiber arm is connected to the sleeve in the same way as the connecting rod. After the connection, the optical fiber arm can move in the vertical plane, and can only move with the sleeve in the horizontal plane. Combined with the device design, the optical fiber arm can only move in the vertical plane under the drive of the vertical motor and rotate around the first-stage fixed rod.

[0048] The fiber optic arm adopts a two-stage mode, and the fiber optic fixed probe is installed on the first-stage rod (the outermost rod).

[0049] According to the embodiment of the present invention, the lower end of the second-stage rod of the optical fiber arm is connected to the first-stage fixed rod through a sleeve without damping, so that the optical fiber arm can rotate around the first-stage fixed rod. This rotational freedom helps to fine-tune the direction of the optical fiber arm when collecting spectral data, ensuring that it can accurately align with the target area, thereby improving the accuracy and efficiency of data collection.

[0050] According to the field BRDF spectrum data rapid acquisition device provided by the present invention, the optical fiber arm assembly also includes: The optical fiber fixed probe driving motor is used to drive the optical fiber fixed probe to move on the first-stage rod according to the third target step limit.

[0051] In the embodiment of the present invention, the optical fiber fixed probe is also provided with a driving motor. A positioning slide rail is arranged on the first-stage rod of the optical fiber arm, and the optical fiber fixed probe can be moved on the first-stage rod with a specific step length under the drive of the driving motor to realize data measurement of different points in the radial (optical fiber arm) direction in the hemispherical space.

[0052] The fiber optic arm adopts a two-stage mode. The fiber optic fixed probe is installed on the first-stage rod (the outermost rod). The rod is equipped with a stepping track. The fiber optic fixed probe drive motor drives the fiber optic fixed probe to move along the rod arm through the track. The first-stage rod can be retracted into the second-stage rod for easy carrying. The first-stage rod is 1m, the second-stage rod is 1.1m, and the maximum length of the two stages is 2m (limited by the length of the optical fiber).

[0053] When installing the device, the projection of the fiber optic arm on the horizontal plane should be kept coincident with the 0° line of the horizontal dial; when the horizontal drive motor is reset, it should be checked that the projection of the fiber optic arm on the horizontal plane should coincide with the 0° line of the horizontal dial.

[0054] Through the embodiment of the present invention, the introduction of the fiber optic fixed probe drive motor enables the fiber optic fixed probe to move within a limited position on the positioning slide rail on the first-stage rod according to a preset third target step length, thereby ensuring that the fiber optic fixed probe can accurately reach different points in the radial direction (i.e., the extension direction of the fiber optic arm) in the hemispherical space, thereby realizing accurate collection of spectral data of these points.

[0055] Through the automatic control of the drive motor, the optical fiber fixed probe can quickly and continuously move and collect data between different points, greatly improving the efficiency of data collection. Compared with manually adjusting the position of the optical fiber fixed probe, this automatic method not only saves time, but also reduces the errors caused by human operation.

[0056] According to the field BRDF spectrum data rapid acquisition device provided by the present invention, the ground measurement integrated device also includes: A fixed base, wherein the fixed base comprises: a counterweight tray, a fixed plate assembly, a fixed bracket and a horizontal adjustment knob assembly; A control box is placed on the counterweight tray, and the counterweight tray is rigidly vertically connected to the fixed plate group; the fixed bracket and the fixed plate group are connected by a folding rod; the horizontal adjustment knob assembly is threadedly connected to the bottom of the fixed plate group to adjust the height of the fixed plate group at different positions.

[0057] Fixed base: It consists of a counterweight tray, a fixed plate group (rod, plate), a fixed bracket (3 pieces), and a horizontal adjustment knob assembly (3 pieces). The counterweight tray is rigidly connected vertically to the fixed plate group (rod); the fixed brackets are connected by a folding rod, which can be opened into a regular triangular cone when in use, and the fixed vertical rod is inserted and fixed therein, and can be folded and stored when not in use; the horizontal adjustment knob assembly is connected to the bottom of the fixed plate group (plate) by a thread, and the height of the fixed plate group at different positions can be adjusted by the knob thread, thereby adjusting the horizontal posture of the entire device so that the bubble of the level plate is centered.

[0058] Through the embodiment of the present invention, the rigid vertical connection design of the counterweight tray and the fixed disc group, as well as the control box placed on the counterweight tray, together provide a stable support for the entire device. The presence of the counterweight effectively prevents the device from shaking or tipping over due to factors such as wind and human touch in complex terrain in the wild, ensuring the stability and accuracy of data collection. The fixed bracket and the fixed disc group are connected by a folding rod, so that the device can be folded up when not in use, greatly reducing the volume and facilitating carrying and transportation.

[0059] According to the field BRDF spectrum data rapid acquisition device provided by the present invention, the ground measurement integrated device also includes: The field of view image collector and the video acquisition control line, the field of view image collector is installed in the optical fiber fixed probe, the field of view image collector is used for image acquisition, and the video acquisition control line connects the field of view image collector and the controller to provide power supply and signal control.

[0060] In the embodiment of the present invention, the field image collector is installed in the optical fiber fixed probe, and the image data of the target area can be collected synchronously while collecting the spectral data. This synchronous collection method facilitates the subsequent data analysis and comparison, because the spectral data and the image data can be directly associated, making the analysis more accurate and comprehensive.

[0061] The simultaneous acquisition of image and spectral data reduces the time and labor costs required to collect the two types of data separately. In addition, since the two types of data are collected at the same time and place, they are more closely related, avoiding data mismatch problems caused by time or space differences.

[0062] One end of the video capture control line is connected to the camera, and the other end is connected to the control box, which is then connected to the power supply and controller.

[0063] Through the embodiments of the present invention, the image data provides intuitive visual information of the target area, such as terrain, vegetation type, soil moisture, etc.; by combining image data and spectral data, users can have a deeper understanding of the characteristics and attributes of the target area and improve the accuracy and depth of data interpretation.

[0064] The field BRDF spectrum data rapid acquisition device provided by the present invention, the field image acquisition device, comprises: A miniature camera, wherein the miniature camera is used to capture images and store them in a preset format when a trigger signal is received.

[0065] The present invention adopts a signal-triggered camera to collect and store images when receiving a trigger signal, and uses the generation time as a keyword to correspond to the spectrum and log file. The body is installed at the optical fiber fixed probe by quick release or buckle, and the installation direction and method are the same as the optical fiber.

[0066] The lens angle of the image collector can adjust the observation angle synchronously with the optical fiber at the optical fiber fixed probe.

[0067] Through the embodiment of the present invention, the micro camera is designed to start collecting images immediately upon receiving a trigger signal. This instant response capability ensures that the image data and the spectral data are highly synchronized in time, avoiding data mismatch problems caused by delays.

[0068] According to the field BRDF spectral data rapid acquisition device provided by the present invention, the controller is connected to the horizontal disk motor control line, the vertical motor control line, the video acquisition control line and the spectrometer signal line.

[0069] refer to Figure 2 , Figure 2 It is a schematic diagram of controller connection provided by the present invention.

[0070] The core component inside the controller is a programmable board, which receives computer control information, connects the horizontal disk motor control line, vertical motor control line, video acquisition control line and spectrometer signal line, and is used to control the fixed-step operation of the horizontal disk drive motor and the vertical drive motor and the spectrometer spectrum acquisition. The controller receives the control signal and sends a start signal to the horizontal disk drive motor and the vertical drive motor respectively; after driving the horizontal disk and the fiber optic arm to the designed position according to the step distance (stroke), it sends a motor stop signal; and sends an acquisition signal to the spectrometer; the log file synchronously records the content of each step command, command time, execution feedback, data file type, file name, storage path and other information.

[0071] Through the embodiment of the present invention, the controller serves as the center of the entire acquisition device, and realizes centralized control of the horizontal disk motor, the vertical motor, the field image collector, and the spectrometer by connecting multiple control lines. This highly integrated design makes the acquisition process more automated and intelligent, and reduces the complexity and error of manual operation.

[0072] According to the field BRDF spectral data rapid acquisition device provided by the present invention, the controller is also connected to a control signal line and a power line, the control signal line is used to transmit the control signal, and the power line is used to supply power to the controller.

[0073] In the embodiment of the present invention, the introduction of the control signal line enables the controller to receive control signals from external or other internal components and issue corresponding instructions based on these signals; the power line provides a stable power supply for the controller, ensuring that the controller can work continuously and stably.

[0074] Through the embodiment of the present invention, the existence of the control signal line and the power line makes the maintenance and management of the acquisition device more convenient. When it is necessary to adjust the acquisition parameters, check the system status or perform troubleshooting, the technician can operate through the control signal line and ensure that the system is in normal working condition through the power line.

[0075] According to the field BRDF spectrum data rapid acquisition device provided by the present invention, the level plate includes: a 360-degree angle scale and a level bubble, and the level bubble is used to adjust the horizontal state of the level plate.

[0076] In the embodiment of the present invention, there is a 360-degree angle scale on the horizontal disk, and a level bubble is fixedly installed to adjust the horizontal state of the horizontal disk. The horizontal disk is vertically connected to the first-level fixed rod through a damper, and can be rotated around the rod according to the designed step length (gear pitch) through a motor drive. The azimuth pointer is vertically rigidly connected to the first-level fixed rod and is placed close to the horizontal disk (but does not affect each other). When working, after the device is leveled (when the level bubble is centered), set the 0° line of the horizontal disk to point to the due north direction.

[0077] According to the embodiment of the present invention, the level plate is provided with a 360-degree angle scale, and combined with the fixed level bubble, the user can intuitively adjust the level plate to a horizontal state. When the level bubble is centered, it means that the level plate has been leveled, ensuring the stability of the acquisition device on the horizontal plane.

[0078] The following describes an example of the field BRDF spectrum data rapid acquisition device provided by the present invention in actual application.

[0079] refer to Figure 3 , Figure 3 It is a schematic diagram of the overall structure of the field BRDF spectrum data rapid acquisition device provided by the present invention.

[0080] The field BRDF spectral data rapid acquisition device includes a ground measurement integrated device and a controller.

[0081] The ground measurement integrated device is one of the core components of the present invention, responsible for equipment support, connection and measurement execution. It is divided into two detachable sections. The first-level fixed rod and its upper part are one section, and the second-level fixed rod, i.e., its upper part, is the other section. The two sections are stored separately after being disassembled. The upper part of the rod can be further disassembled, but except for repair and maintenance, it can be directly packed without disassembly. The device (see attached figure) consists of the following components from top to bottom: Fixed rod: This component includes a first-level fixed vertical rod (1.5m), on which the vertical drive motor, horizontal (scale) plate, fiber optic arm and horizontal drive motor are installed. There is also a second-level fixed rod (1.6m) below it. The first-level fixed rod can be installed in the second-level fixed rod, and the two-level rods are fixed by a pin. The two-level rod design reduces the rod length and improves portability. The two-level rod can support an observation height of up to 3.0m (or use a longer rod to increase the observation height). During operation, after the first-level fixed rod adjusts its posture and position, it will not move, rotate, or extend.

[0082] Vertical drive motor and its power control line: A lightweight micro motor connected to a primary fixed rod. It can move up and down along the fixed rod with a specific step length through a thread. There are upper and lower limiters at the installation position to control its up and down travel. The vertical movement angle of the fiber optic arm is calculated through the thread pitch and the length of the connecting rod, and then its zenith angle is obtained. The travel is related to the length of the connecting rod (line) of the fiber optic arm, which controls the zenith angle range of the fiber optic probe. Subject to the connection method with the connecting rod (line) and the movement range of the drive motor on the vertical rod, the vertical angle of the fiber optic arm can be adjusted from 15° to 90° (zenith angle).

[0083] The vertical drive motor power supply and control line share a line, which is placed outside the fixed pole. One end is connected to the motor, and the other end enters the control box and connects to the controller. The controller is separately connected to the power supply to provide power and signal control.

[0084] Connecting rod (wire): connected to the fiber optic arm through a movable bolt, and the connecting rod (wire) can rotate freely around the movable bolt. The connection method between the connecting rod and the vertical motor is the same as that of the fiber optic arm. When the vertical drive motor moves up and down along the first-level fixed rod, it drives the connecting rod (wire) to move, changes the angle between the fiber optic arm and the horizontal disk, and then adjusts the fiber optic probe to the set observation angle (zenith angle). In order to increase the angle adjustment range of the fiber optic arm, the connecting rod can be made of flexible material. At this time, the connecting rod becomes a connecting wire and is connected to the fiber optic arm in a snap-fit ​​manner. When the connecting wire is used, the vertical motor does not need to move along the fixed rod, but is instead driven by the motor to the winder. By shortening the length of the connecting wire, the fiber optic arm is driven to rotate around the sleeve.

[0085] Fiber optic arm assembly: It consists of a fiber optic arm and a fiber optic fixed probe (including a drive motor). The fiber optic fixed probe is installed on the top of the fiber optic arm through a thread or a buckle, and the spectrometer fiber is installed on the side of the fiber optic arm through a fixed buckle. During observation, the optical fiber and the fiber optic fixed probe are fixedly installed, and the optical probe is perpendicular to the fixed probe surface. The lower end of the second-stage rod of the fiber optic arm is connected to the first-stage fixed rod through a sleeve without damping, which facilitates the fiber optic arm to rotate around the fixed rod. The connection method between the fiber optic arm and the sleeve is the same as that of the connecting rod. After connection, the fiber optic arm can move in the vertical plane, and can only move with the sleeve in the horizontal plane. Combined with the device design, the fiber optic arm can only be driven by the vertical motor, move within the vertical plane, and rotate around the first-stage fixed rod.

[0086] The optical fiber fixed probe also has a drive motor. A positioning slide rail is set on the optical fiber arm, and the optical fiber fixed probe can move on it with a specific step length limit under the drive motor to achieve data measurement at different points in the radial (optical fiber arm) direction in the hemispherical space.

[0087] The fiber optic arm adopts a two-stage mode. The optical fiber fixed probe is installed on the first-stage rod (the outermost rod). The first-stage rod is equipped with a stepping track. The driving motor drives the fixed probe to move along the rod arm through the track. The first-stage rod can be retracted into the second-stage rod for easy carrying. The first-stage rod is 1m, the second-stage rod is 1.1m, and the maximum length of the two stages is 2m (limited by the length of the optical fiber).

[0088] When installing the device, the projection of the fiber optic arm on the horizontal plane should be kept coincident with the 0° line of the horizontal dial; when the horizontal drive motor is reset, it should be checked that the projection of the fiber optic arm on the horizontal plane should coincide with the 0° line of the horizontal dial.

[0089] The optical fiber, i.e. the optical fiber of the spectrometer, is placed on the optical fiber arm assembly and the fixed rod. One end is connected to the optical fiber fixed probe, and the other end enters the control box and is connected to the spectrometer. Considering that the optical fiber is not easy to be disassembled and installed frequently, the connection between the optical fiber and the spectrometer is not disassembled unless it is for maintenance or replacement. After the work is completed, only one end of the optical fiber arm is disassembled, and the optical fiber is coiled and stored together with the spectrometer.

[0090] Field image collector and its power control line: The present invention adopts a signal-triggered camera to collect and store images when receiving a trigger signal, and uses the generation time as a keyword to correspond to the spectrum and log file. Its body is installed at the optical fiber fixed probe by quick release or buckle, and the installation direction and method are the same as the optical fiber. One end of the control line is connected to the camera, and the other end is connected to the control box, which is connected to the power supply and controller.

[0091] The lens angle of the image collector can adjust the observation angle synchronously with the optical fiber at the optical fiber fixed probe.

[0092] Horizontal (scale) plate: It consists of a horizontal plate (10cm, not larger than the maximum outer diameter of the first-stage rod after the vertical drive motor is installed), an azimuth pointer (not exceeding the limit of the horizontal plate) and a level bubble. There is a 360-degree angle scale on the horizontal plate, and a level bubble is fixed to adjust the horizontal state of the horizontal plate. The horizontal plate is vertically connected to the first-stage fixed rod through a damper, and can be rotated around the rod according to the designed step length (gear pitch) through the motor drive. The azimuth pointer is vertically rigidly connected to the first-stage fixed rod and is placed close to the horizontal plate (but does not affect each other). When working, after the device is leveled (when the level bubble is centered), set the 0° line of the horizontal plate to point to the due north.

[0093] Horizontal drive motor of the horizontal disk and its power control line: connected to the primary fixed rod through a damper set (gear), and vertically rigidly connected to the horizontal disk. The micro motor drives the horizontal disk to rotate around the primary fixed rod according to the designed step length. The rotation angle of the horizontal disk is calculated by the corresponding relationship of the gear pitch, and then the observation azimuth is adjusted. The adjustable angle of the horizontal disk is 0-360°, and it automatically resets after reaching 360 degrees.

[0094] The power supply and control line of the horizontal disk drive motor are placed on the fixed rod through a buckle. One end is connected to the motor, and the other end enters the control box and connects to the controller. The controller is separately connected to the power supply to provide power and signal control.

[0095] Control box: It is divided into three parts, which are composed of mobile power (battery) compartment, spectrometer compartment and controller and cable compartment. When assembled, it is placed on the counterweight tray at equal angles and fixed by locks. The controller is connected to the power supply to provide power for the motor and micro camera, connected to the spectrometer to provide trigger signals, and connected to the control computer to send and receive control signals. When the spectrometer has its own computer (such as RS8800), it is not necessary to connect the control computer separately, and the spectrometer computer directly controls the system operation.

[0096] Fixed base: It consists of a counterweight tray, a fixed plate group (rod, plate), a fixed bracket (3 pieces), and a horizontal adjustment knob assembly (3 pieces). The counterweight tray is rigidly connected vertically to the fixed plate group (rod); the fixed brackets are connected by a folding rod, which can be opened into a regular triangular cone when in use, and the fixed vertical rod is inserted and fixed therein, and can be folded and stored when not in use; the horizontal adjustment knob assembly is connected to the bottom of the fixed plate group (plate) by a thread, and the height of the fixed plate group at different positions can be adjusted by the knob thread, thereby adjusting the horizontal posture of the entire device so that the bubble of the level plate is centered.

[0097] Taking into account the impact on the measured spectrum, all devices are painted black to reduce the contamination of the collected spectrum by reflected light.

[0098] The core component inside the controller is a programmable board, which receives computer control information, connects various drive motors, spectrometers and power supplies, and is used to control the fixed-step operation of the horizontal disk drive motor and the vertical drive motor and the spectrometer spectrum acquisition. The controller receives the control signal and sends a start signal to the horizontal disk drive motor and the vertical drive motor respectively; after driving the horizontal disk and the fiber arm to the designed position according to the step distance (stroke), it sends a motor stop signal; and sends an acquisition signal to the spectrometer; the log file synchronously records the content of each step command, command time, execution feedback, data file type, file name, storage path and other information.

[0099] BRDF measurement is to measure the spectrum of objects at different azimuth angles at the same optical fiber zenith angle in the hemispherical space, and then adjust the zenith angle to measure the spectrum of objects at different azimuth angles in the next round. Or keep the azimuth angle unchanged and change the zenith angle for measurement.

[0100] The controller receives the control computer command and starts to check whether the horizontal and vertical motors are reset (preset angle starting position). After completion, the reference plate is measured. After the measurement, the horizontal and vertical motors are immediately commanded to drive the fiber optic arm to the specified position, and the spectrum measurement and fiber optic field of view collection are started. According to the control signal, the horizontal and vertical motors are commanded to drive the fiber optic arm to adjust the position and carry out data collection. After all the position measurements are completed by the control signal command, the horizontal and vertical motors drive the fiber optic arm to reset, and the reference plate is measured again. The measurement work of this round is completed.

[0101] refer to Figure 4 , Figure 4 It is a flow chart of a spectrum measurement control process provided by the present invention, which includes reference plate measurement, horizontal disk driving motor, judging whether the designed step amount is reached, outputting log file, vertical driving motor, judging whether the designed step amount is reached, outputting log file, spectrum measurement, outputting log file, field of view acquisition, outputting log file, reference plate measurement; and controller receiving feedback signal, horizontal disk, vertical driving motor, motor resetting, etc.

[0102] In some embodiments, a log file is a log file, which is usually a record of a certain process completed by the system or some software for future reference. It does not have a fixed format and is usually a text file that can be opened with Notepad to view the content. Of course, it may be in other formats and will be garbled when opened directly. Most logs can be identified from their file names, such as uninstall.log or error.log. Of course, the former is usually a record generated during the software installation process so that it can be provided to the uninstaller for use when uninstalling in the future, and the latter is usually used to record some error information during the operation of the software, etc.

[0103] During the operation of the device, a ground object spectrometer is also required. Considering the convenience of control and secondary development, the present invention adopts the RS8800 ground object spectrometer. The device has high maturity and good integration. It has a microcomputer integrated inside, and can be remotely controlled by mobile phones, tablets and computers with wifi and Bluetooth functions through communication methods such as wifi and Bluetooth. In addition, its spectrum acquisition provides signal-triggered control, which is convenient for secondary development control.

[0104] It should be noted that spectrometers of other brands with similar functions can also be used as substitutes for the RS8800 device. The spectrometer is only a necessary component for measurement and is not an inventive component of the present invention.

[0105] The following describes the process of installing the device for rapid field BRDF spectral data acquisition provided by the present invention during actual application.

[0106] The field BRDF spectral data rapid acquisition device is divided into two sections: the first section (upper section) is centered on the primary fixed rod, on which the vertical drive motor, optical fiber arm, connecting rod (wire), horizontal disk drive motor, horizontal disk (including the components above) are installed through quick release, buckle and other parts. The second section (lower section) is centered on the secondary fixed rod, on which the counterweight plate is fixed by buckles, control box, and fixed base. The fixed base is detachable, and the fixed bracket on it can be folded directly on the rod. After removing the power control line, the two sections can be separated and loaded into the transport box respectively.

[0107] When using, first refer to the tripod installation method, place the lower section, and after the fixed bracket is fixed, insert the first-level fixed rod into the second-level fixed rod and lock it with a latch. At the same time, adjust the installation direction so that the 0° line of the horizontal disk is aligned with the true north direction, and level it so that the level bubble is centered.

[0108] Place the spectrometer, power supply, controller, etc. on the counterweight plate. In case of instability, other counterweights can be placed on the counterweight plate or fixed with steel cables.

[0109] Connect the power control lines of computers (wireless connection is possible), motors, spectrometers, cameras and other devices.

[0110] Check whether there are any uninstalled parts, whether the fiber optic arm is extended and retracted in place, whether the motor position is reset, etc.

[0111] Check the leveling status of the device, use the level adjustment knob to make the bubble on the level plate centered and the 0° line oriented to the true north. The device is now installed.

[0112] Check the connection between the computer and the controller, and check the working status of the motor and spectrometer. Enter the measurement mode.

[0113] The following describes the BRDF measurement process of the field BRDF spectrum data rapid acquisition device provided by the present invention in actual application.

[0114] refer to Figure 5 , Figure 5 It is a schematic diagram of the hemispherical space measurement projection provided by the present invention, wherein the projection of the upper hemisphere of the space sphere on the horizontal plane, the middle circle is the zenith, the zenith angle there is 0 degrees (the pitch angle is 90 degrees), and different rings represent the zenith angles of the observer at different positions on the circumference.

[0115] To ensure the diversity of the sampled data, a round of BRDF measurement is performed every 10° at the solar zenith angle. For each round of the test, the observation azimuth angle ranges from 0-360°, with an interval of 30°, for a total of 6 azimuth planes. The observation zenith angle ranges from 0-70°, with a total of 11 measurement positions in each azimuth plane, of which 0-60° is at an interval of 15°, with 9 measurement positions, and the other 2 measurement positions are for an observation zenith angle of 70°. Therefore, in the entire hemispherical space, spectral sampling of the target surface is required at 66 measurement positions. Before and after each round of BRDF measurement test, the standard plate needs to be vertically sampled twice each.

[0116] Since the zenith angle measurement range of the device is 15-90°, the zenith angle of 0° can be quickly measured by manually adjusting the optical fiber probe to 0° (facing the ground).

[0117] Prepare control commands (programs): Write measurement control commands according to the above design and the process in the above controller.

[0118] The control command is uploaded to the controller to start the measurement process.

[0119] BRDF measurement results (including automatically recorded data) include: device location longitude and latitude, measurement start and end time; reference plate reflection value, measurement time, azimuth, zenith angle; ground object reflection value, measurement time, azimuth, zenith angle. Through the device location and measurement time, the zenith angle and azimuth of the sun at the measurement time of the day can be calculated or found. The measurement data is recorded in the log file, which does not contain spectral and image data, but contains information such as the file name corresponding to the data.

[0120] Through the embodiments of the present invention, it is only necessary to determine the 0-degree azimuth angle, and the adjustment of other angles is automatically calculated by the driving motor based on the gears and thread values. During the measurement process, after the computer edits the measurement instructions, no manual intervention is required throughout the process. The controller (programmable board) drives the motor, spectrometer, and camera in sequence according to the commands to complete all data collection and data regularization recording. The device can also measure the target spectrum in the radial (fiber optic arm) direction in the hemispherical space by moving the fiber optic probe. There are obvious differences from the invention in many aspects such as device composition, measurement method, and measurement content.

[0121] Program control uses a drive motor to quickly send the detector (spectrometer probe) to the designed position, which can greatly reduce the process time and thus reduce the measurement time. In one measurement, the changes in lighting and atmospheric conditions, the effects of small changes in the solar zenith angle and azimuth angle can simulate the results of BRDF in different orientations under the condition of unchanged sun position as much as possible.

[0122] The field BRDF spectral data rapid acquisition device provided by the present invention is light, easy to carry, easy to operate, has a short measurement process time, and has a wide range of applications: the main core rods of the device are made of carbon steel, which is high in strength, light and durable, and easy to carry and move; the rods are retractable and can be adjusted and retracted as needed to meet the needs of different measurement ranges; the equipment operation is driven by a motor, and the motor has a high operating accuracy, which can effectively meet the angle requirements during measurement; the device of the present invention has a fast measurement speed, and because the driven rods are light and the motor rotates quickly, the spatial position movement can be completed quickly, which can effectively and significantly reduce the process time of measurement preparation; it is simultaneously equipped with a measurement field image acquisition system to obtain the target object image data, which is convenient for test personnel to grasp the real components and spatial composition information of the measurement target. The device measurement can be programmed by computer, and the measurement instruction block can be designed. After editing once, no human intervention is required in the middle, and all measurements, data automatic recording and regular storage are automatically completed, with a high degree of automation and low difficulty in operation.

[0123] The field BRDF spectrum data rapid acquisition device provided by the present invention abandons the circular track measurement scheme, is convenient, and has small measurement restrictions. It has a high degree of automation, computer programming, automatic measurement, and less manual intervention. It is motor-driven, has rapid positioning, reduces the probe space movement process time, and avoids the influence of weather conditions caused by long measurement time.

[0124] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0125] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0126] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for rapidly collecting BRDF spectral data in the field, characterized in that: It includes a ground measurement integrated device and a controller; The ground measurement integrated device comprises: The fixing rod comprises: a primary fixing rod and a secondary fixing rod; the primary fixing rod can be inserted into the secondary fixing rod, and the primary fixing rod and the secondary fixing rod are fixed by a latch.

2. A vertical drive motor and a vertical motor control line, wherein the vertical drive motor is connected to the primary fixing rod and moves up and down along the primary fixing rod at a first target step length through a thread, and the vertical motor control line connects the vertical drive motor and the controller to provide power supply and signal control; An optical fiber arm assembly, the optical fiber arm assembly comprising: an optical fiber arm and an optical fiber fixed probe; the bottom end of the optical fiber arm is connected to the primary fixed rod through a sleeve, and the optical fiber fixed probe is sleeved on the top end of the optical fiber arm through a thread or a buckle; A connecting rod, both ends of which are connected to the vertical drive motor and the optical fiber arm through movable bolts; An optical fiber, wherein the optical fiber is installed in the fixing rod and the optical fiber arm assembly, a first end of the optical fiber is connected to the optical fiber fixing probe, and a second end of the optical fiber is connected to a spectrometer in the controller; A horizontal plate and an azimuth pointer, wherein the horizontal plate is vertically connected to the primary fixing rod through a damper, and the azimuth pointer is vertically and rigidly connected to the primary fixing rod and is placed close to the horizontal plate; A horizontal drive motor for a horizontal disk and a control line for the horizontal disk motor, wherein the horizontal drive motor for the horizontal disk is mounted on the first-level fixed rod through a damper and is vertically rigidly connected to the horizontal disk; the horizontal drive motor for the horizontal disk is used to drive the horizontal disk to rotate around the first-level fixed rod according to a second target step length; the control line for the horizontal disk motor connects the horizontal drive motor for the horizontal disk with the controller to provide power supply and signal control; A control box, the control box comprising: a mobile power supply compartment, a spectrometer compartment, a controller compartment and a cable compartment; the control box is connected to the secondary fixing rod; The controller is used to control the horizontal drive motor of the horizontal plate and the vertical drive motor to operate according to the first target step length and the second target step length respectively; and control the spectrometer to collect spectra.

3. The field BRDF spectrum data rapid acquisition device according to claim 1, characterized in that: The optical fiber arm comprises: A first-stage rod and a second-stage rod, a stepping track is installed on the first-stage rod, and the first-stage rod can be retracted into the second-stage rod.

4. The field BRDF spectrum data rapid acquisition device according to claim 2, characterized in that: The optical fiber arm assembly further comprises: The optical fiber fixed probe driving motor is used to drive the optical fiber fixed probe to move on the first-stage rod according to the third target step length limit.

5. The field BRDF spectrum data rapid acquisition device according to claim 1, characterized in that: The ground measurement integrated device also includes: A fixed base, wherein the fixed base comprises: a counterweight tray, a fixed plate assembly, a fixed bracket and a horizontal adjustment knob assembly; The control box is placed on the counterweight tray, and the counterweight tray is rigidly vertically connected to the fixed disk group; the fixed bracket is connected to the fixed disk group via a folding rod; the horizontal adjustment knob assembly is connected to the bottom of the fixed disk group via a threaded connection, so as to adjust the height of the fixed disk group at different positions.

6. The field BRDF spectrum data rapid acquisition device according to claim 1, characterized in that: The ground measurement integrated device also includes: A field of view image collector and a video acquisition control line, wherein the field of view image collector is installed in the optical fiber fixed probe, the field of view image collector is used for image acquisition, and the video acquisition control line connects the field of view image collector and the controller to provide power supply and signal control.

7. The field BRDF spectrum data rapid acquisition device according to claim 5, characterized in that: The field of view image collector comprises: A miniature camera, wherein the miniature camera is used to capture images and store them in a preset format when a trigger signal is received.

8. The field BRDF spectrum data rapid acquisition device according to claim 5, characterized in that: The controller is connected to the horizontal disk motor control line, the vertical motor control line, the video acquisition control line and the spectrometer signal line.

9. The field BRDF spectrum data rapid acquisition device according to claim 7, characterized in that: The controller is also connected to a control signal line and a power line, wherein the control signal line is used to transmit a control signal, and the power line is used to supply power to the controller.

10. The field BRDF spectrum data rapid acquisition device according to claim 1, characterized in that: The level plate includes: a 360-degree angle scale and a level bubble, and the level bubble is used to adjust the horizontal state of the level plate.

Images