Automatic calibration tripod

Abstract

The invention relates to the technical field of geological exploration, and discloses an automatic calibration tripod, which comprises a folding foot tube assembly, a carbon fiber foot tube of the folding foot tube assembly is embedded with a gravity sensor, and the gravity sensor comprises a gyroscope; the cradle head control module is arranged at the top of the folding type foot pipe assembly and is integrated with a three-axis micro servo motor; the multi-equipment linkage fixing frame comprises a rotatable aluminum alloy guide rail and a standardized clamping groove, and a magnetic adsorption buckle is arranged in the clamping groove; the Bluetooth networking module is electrically connected with the standardized card slot and is configured to automatically match the card equipment, and unified power supply is carried out through a Type-C interface; a portable anti-falling shell is composed of an outer layer glass fiber honeycomb structure, an inner layer EVA damping cabin and a side wall embedded telescopic assembly. The gravity sensor embedded in the folding foot pipe assembly monitors terrain inclination data in real time and transmits the data to the top cradle head control module, and the integrated three-axis micro servo motor adapts to dynamic terrains such as slopes and concave-convex grounds through a closed-loop control system.

Description

Technical Field

[0001] The present invention relates to the technical field of geological exploration, and specifically to an automatically calibrated tripod. Background Art

[0002] In the field of field operations such as geological exploration, building surveying and mapping, and field photography, the tripod, as a basic support device for carrying surveying instruments, photographic equipment, etc., its automatic leveling ability, equipment compatibility, and portability and protection performance directly affect the operation efficiency and data accuracy. With the popularization of intelligent devices in the field scenario, the industry's demand for tripods has developed from simple mechanical support to an intelligent direction of "rapid and accurate leveling, multi-device collaborative operation, and complex environment adaptability".

[0003] The core technical solutions of existing tripods for field operations mainly include that the mainstream solution is "folding tripod + bubble level". Its structure consists of aluminum alloy leg tubes, a top pan head, and a bubble level. During the leveling process, it is necessary to manually observe the position of the bubble in the level and adjust the height by rotating the telescopic joints of the leg tubes until the bubble is centered. This solution relies on the operator's experience, and the average time for single leveling is 1 - 3 minutes, and it is significantly affected by the terrain slope - when the ground inclination angle exceeds 5°, it is necessary to repeatedly adjust the leg tube length and the pan head angle, and the error is usually greater than 2°.

[0004] The inventors of the present application found in the research that the above technical solutions have at least the problems that the existing level requires continuous observation and manual adjustment, and it is necessary to frequently squat down to check the level state during single-person operation, and the more complex the terrain, the more cumbersome the leveling steps. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides an automatically calibrated tripod, which solves the problems that the existing level requires continuous observation and manual adjustment, and it is necessary to frequently squat down to check the level state during single-person operation, and the more complex the terrain, the more cumbersome the leveling steps.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: An automatically calibrated tripod, comprising:

[0007] A foldable leg tube assembly, the carbon fiber leg tubes of which are embedded with gravity sensors, and the gravity sensors include gyroscopes;

[0008] A pan head control module, which is arranged on the top of the foldable leg tube assembly and integrated with a three-axis micro servo motor, receives the inclination signal of the gravity sensor and generates a driving force;

[0009] A multi-device linkage fixing bracket, which includes a rotatable aluminum alloy guide rail and a standardized card slot, and a magnetic adsorption buckle is arranged in the card slot;

[0010] The Bluetooth networking module is electrically connected to the standardized card slot and configured to automatically pair with the card-mounted device, and is uniformly powered through the Type-C interface;

[0011] The portable anti-drop shell covers the folding leg tube assembly, the pan-tilt control module, the multi-device linkage fixing bracket and the Bluetooth networking module, and is composed of an outer layer of fiberglass honeycomb structure, an inner layer of EVA shock-absorbing compartment and a sidewall embedded telescopic assembly.

[0012] By adopting the above technical solutions, the gravity sensor (including gyroscope) embedded in the folding leg tube assembly monitors the terrain inclination data in real time at a high frequency of 200Hz and transmits it to the three-axis micro servo motor of the top pan-tilt control module. The two form a closed-loop control system, which can automatically complete the horizontal calibration within 3 seconds with an error less than 0.5°, completely replacing the traditional manual observation of the bubble and manually rotating the leg tube telescopic joint leveling mode. There is no need for a single person to frequently squat down to check the horizontal state, and there is no need to repeatedly adjust the leg tube length and the pan-tilt angle in complex terrain, solving the core problems of cumbersome leveling steps, long time consumption and dependence on the operator's experience in the prior art, and significantly improving the operation efficiency and horizontal calibration accuracy in complex terrain.

[0013] Preferably, the three-axis micro servo motor and the gravity sensor form a closed-loop control system, with a horizontal calibration error less than 0.5 degrees and a completion time less than 3 seconds.

[0014] Preferably, each leg tube of the folding leg tube assembly is provided with a stepped locking mechanism, and the outer wall of the carbon fiber leg tube is covered with an anti-scratch and wear-resistant coating.

[0015] Preferably, the magnetic adsorption buckle adopts a neodymium magnet array arrangement, and its adsorption force can fix a device with a mass greater than 2 kg.

[0016] Preferably, the Bluetooth networking module supports connecting at least 4 devices simultaneously, and the data synchronization delay is less than 200 ms.

[0017] Preferably, the honeycomb unit aperture of the outer honeycomb structure is 3-5 mm, the wall thickness is 0.8 mm, and the honeycomb depth is 8-10 mm.

[0018] Preferably, the inner layer of EVA shock-absorbing compartment includes independent compartments, and the inner wall of the compartments is attached with 5 mm thick high-density EVA foam.

[0019] Preferably, the telescopic assembly has two-stage telescopic aluminum rods and rollers, the roller diameter is 80 mm and the built-in shock-absorbing bearing, and the tilt angle of the shell is 45 degrees after the pull rod is fully extended.

[0020] Preferably, the Bluetooth networking module supports the data transparent transmission protocol and synchronizes the data collected by multiple devices to the mobile terminal in real time.

[0021] Preferably, the pan-tilt control module has an built-in tilt angle memory function, and automatically calls historical horizontal parameters for pre-calibration when the position of the carbon fiber leg tube changes.

[0022] Working principle: When the folding leg tube assembly is deployed on complex terrain, the gravity sensors (including gyroscopes) embedded in its carbon fiber leg tubes are immediately activated, and they monitor the three-dimensional tilt angle of the terrain in real time at a high frequency of 200 Hz, generating accurate attitude data streams and transmitting them to the top pan-tilt control module. The integrated three-axis micro servo motors in this module, based on a closed-loop control mechanism, perform micro-current drive adjustment every 50 milliseconds according to the tilt angle difference signals provided by the sensors, thus completing high-precision horizontal calibration within 3 seconds (error < 0.5°);

[0023] If the position of the leg tube changes, the system can also automatically call historical tilt angle parameters for intelligent pre-calibration, further shortening the response time to 1.5 seconds. At the same time, when the user brings a device (such as a laser rangefinder or an electronic compass) within about 5 mm of the standardized card slot of the multi-device linkage fixing bracket, the built-in neodymium magnet array magnetic adsorption buckle will instantaneously generate a strong adsorption force of ≥ 20 N within 50 milliseconds to firmly lock the device (supporting > 2 kg). This action simultaneously triggers the Hall induction switch, automatically activating the Bluetooth networking module to pair with the device. This module powers the mounted devices uniformly through a Type-C interface, and uses the low-power Bluetooth data transparent transmission protocol to achieve millisecond-level synchronization (delay < 200 ms) of the data of 4 devices to the mobile terminal for centralized processing.

[0024] To ensure the safety and portability of field operations, the entire tripod is covered by a portable anti-drop shell: its outer layer of fiberglass honeycomb structure (honeycomb aperture 3 - 5 mm) absorbs and disperses up to 80% of the external impact energy through micro-deformation; the inner layer of independent EVA shock-absorbing compartments (filled with 5 mm high-density foam) further significantly attenuates the impact acceleration to below 30 g, enabling the overall structure to withstand an accidental drop of 1.5 meters; after the sidewall embedded telescopic components are fully deployed, the user can tow it at an optimized tilt angle of 45° with the help of two-stage telescopic aluminum rods and 80 mm diameter rollers (equipped with shock-absorbing bearings), saving 70% of the physical effort for handling.

[0025] The present invention provides an automatically calibrated tripod. It has the following beneficial effects:

[0026] 1. By means of the gravity sensors embedded in the folding leg tube assembly, the present invention monitors the terrain tilt data in real time and transmits it to the top pan-tilt control module. The integrated three-axis micro servo motors in it, through a closed-loop control system, complete horizontal calibration within 3 seconds with an error less than 0.5°, adapting to dynamic terrains such as slopes and uneven ground, and greatly improving the operation efficiency in the field rapid deployment scenario.

[0027] 2. The standardized card slots of the aluminum alloy guide rail of the present invention are internally provided with a neodymium magnet array magnetic adsorption buckle, which can be automatically locked within 50 milliseconds when the device is within 5 mm. At the same time, it triggers the Bluetooth networking module, is powered uniformly through the Type-C interface, and transmits data to the mobile terminal, replacing the independent installation and cable connection mode of the traditional split bracket, saving 85% of the installation time and avoiding communication interruption caused by cable winding and wear, and constructing a seamless workflow of physical installation and digital collaboration.

[0028] 3. The outer layer of the portable anti-drop shell of the present invention adopts a honeycomb structure to disperse the impact energy through micro-deformation. The inner layer of 5 mm thick high-density EVA further attenuates the impact acceleration to below 30 g and can withstand a 1.5-meter drop impact; the hidden two-stage telescopic aluminum rod on the side wall and the 80 mm diameter roller with a shock-absorbing bearing form a towing mode. When the inclination angle of the shell is 45°, the center of gravity projection falls directly above the wheel axle, adapting to long-distance field transportation and avoiding equipment collision. Brief Description of the Drawings

[0029] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0030] Figure 2 is a schematic partial structure diagram of the gravity sensor of the present invention;

[0031] Figure 3 is a schematic partial structure diagram of the multi-device linkage fixing frame of the present invention;

[0032] Figure 4 is a schematic partial structure diagram of the portable anti-drop shell of the present invention;

[0033] Figure 5 is a schematic partial structure diagram of the telescopic component of the present invention;

[0034] Figure 6 is a schematic partial structure diagram of the outer layer of the present invention;

[0035] Figure 7 is a flow chart of the quick calibration of the tripod of the present invention;

[0036] Figure 8 is a data link diagram of the present invention.

[0037] Among them, 1. Folding leg tube assembly; 11. Carbon fiber leg tube; 12. Gravity sensor; 13. Gyroscope; 2. Pan-tilt control module; 21. Three-axis micro servo motor; 3. Multi-device linkage fixing frame; 31. Guide rail; 32. Card slot; 33. Magnetic adsorption buckle; 4. Bluetooth networking module; 5. Portable anti-drop shell; 51. Outer layer; 52. Inner layer; 53. Telescopic component; 531. Two-stage telescopic aluminum rod; 532. Roller; 6. Staged locking mechanism. Detailed Embodiments

[0038] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Please refer to the attached Figure 1 - attached Figure 8 , the embodiment of the present invention provides an automatic calibration tripod, including:

[0040] A collapsible leg tube assembly 1, in which a carbon fiber leg tube 11 is embedded with a gravity sensor 12, and the gravity sensor 12 includes a gyroscope 13;

[0041] A pan-tilt control module 2, which is arranged at the top of the collapsible leg tube assembly 1 and integrated with a three-axis micro servo motor 21, receives the tilt signal of the gravity sensor 12 and generates a driving force;

[0042] A multi-device linkage fixing bracket 3, which includes a rotatable aluminum alloy guide rail 31 and a standardized card slot 32, and a magnetic adsorption buckle 33 is arranged in the card slot 32;

[0043] A Bluetooth networking module 4, which is electrically connected to the standardized card slot 32 and configured to automatically pair with the card-mounted device, and is uniformly powered through a Type-C interface;

[0044] A portable anti-drop shell 5, which covers the collapsible leg tube assembly 1, the pan-tilt control module 2, the multi-device linkage fixing bracket 3 and the Bluetooth networking module 4, and is composed of an outer layer 51 fiberglass honeycomb structure, an inner layer 52 EVA shock-absorbing cabin and a side wall embedded telescopic assembly 53.

[0045] Specifically, when the collapsible leg tube assembly 1 is unfolded, the gravity sensor 12 including the gyroscope 13 embedded in the carbon fiber leg tube 11 continuously senses the terrain tilt data, and these data are transmitted to the pan-tilt control module 2 at a high frequency of 200 Hz, triggering the integrated three-axis micro servo motor 21 to generate a micro driving force within 3 seconds, and compressing the horizontal calibration error to within 0.5 degrees through a closed-loop control system. Compared with the traditional manual leveling operation that takes 1-3 minutes, this system completely solves the problem of rapid and accurate leveling on complex terrains. When the device is placed on the multi-device linkage fixing bracket 3, the neodymium magnet array magnetic adsorption buckle 33 in the standardized card slot 32 immediately generates an adsorption force of ≥8N to fix the device to support a mass of more than 2 kg, and at the same time triggers the Bluetooth networking module 4 to automatically pair the device. This module is uniformly powered through a Type-C interface and establishes a data channel to realize that the data synchronization delay of 4 devices is controlled within 200 ms, forming a plug-and-play device cooperation network and breaking through the problem of cable constraints in traditional split installations.

[0046] The portable anti-drop shell 5 adopts a composite protection strategy to cope with external impacts: the fiberglass honeycomb structure of the outer layer 51 disperses more than 80% of the impact energy through micro-deformation, the inner layer 52 attenuates the remaining impact acceleration to below 30g, and the side wall embedded telescopic component 53 unfolds the two-stage telescopic aluminum rod 531 and the 80mm diameter roller 532 during handling, and cooperates with the built-in shock-absorbing bearing to tow the shell at a 45-degree inclination angle, reducing the physical exertion by 70% compared with the traditional hand-held mode.

[0047] The tilt angle memory function of the pan-tilt control module 2 stores historical horizontal parameters, automatically calls the pre-calibration data when the position of the tripod legs changes, and reduces the energy consumption of repeated calibration. The data transparent transmission protocol of the Bluetooth networking module 4 supports real-time synchronization of multi-device collected data to the mobile terminal to form a centralized monitoring platform. The rotatable aluminum alloy guide rail 31 allows the device to adjust the azimuth angle by 360°, and cooperates with the independent compartment design of the EVA shock-absorbing cabin to ensure that the device is protected from collision during transportation.

[0048] Please refer to the appendix Figure 1 - Appendix Figure 3 , the three-axis micro servo motor 21 and the gravity sensor 12 form a closed-loop control system, the horizontal calibration error is less than 0.5 degrees and the completion time is less than 3 seconds; each tripod leg of the foldable tripod leg assembly 1 is provided with a stepped locking mechanism 6, and the outer wall of the carbon fiber tripod leg 11 is covered with an anti-scratch and wear-resistant coating.

[0049] Specifically, the three-axis micro servo motor 21 is a camera pan-tilt. When the gyroscope 13 of the gravity sensor 12 detects terrain inclination, 400 groups of attitude data streams are generated per second and transmitted to the three-axis micro servo motor 21. The three-axis micro servo motor 21 continuously outputs a micro current to drive the pan-tilt joint to fine-tune according to the data stream difference value, and completes an inclination error detection-compensation action cycle every 50 milliseconds. This closed-loop control compresses the entire horizontal calibration process within 3 seconds, eliminating the problem of shooting misalignment on the slope terrain. At the same time, the stepped locking mechanism 6 gradually meshes the telescopic joints of the carbon fiber tripod legs 11 when the tripod legs are unfolded, and locks the height through the stepped damping grooves. Cooperating with the micron-level anti-scratch and wear-resistant coating on the outer wall, it avoids the telescopic failure and surface scratches of the traditional tripod legs on the gravel ground.

[0050] Please refer to the appendix Figure 3 , the magnetic adsorption buckle 33 adopts an array arrangement of neodymium magnets, and its adsorption force can fix devices with a mass greater than 2 kg; the Bluetooth networking module 4 supports connecting at least 4 devices simultaneously, and the data synchronization delay is less than 200 ms.

[0051] Specifically, when the device is close to the standardized card slot 32, the magnetic adsorption buckle 33 arranged in the neodymium magnet array generates an adsorption force of more than 20N based on strong magnetism, and completes the physical locking of the device with a mass of ≤2kg within 50 milliseconds. This process simultaneously triggers the Hall sensor switch, sends a device presence signal to the Bluetooth networking module 4, and automatically opens the device pairing channel. The module establishes 4 independent communication links in the 2.4GHz frequency band through an adaptive frequency hopping algorithm. Each device is allocated a fixed time slot of 0.2 seconds to transmit data. With the voltage stabilization design of the unified power supply of the Type-C interface, the data synchronization delay of multiple devices is compressed to less than 200ms, realizing zero-wait coordination of physical fixation and data link.

[0052] When the device is working, the magnetic structure of the neodymium magnet array makes the adsorption force gradient uniformly distributed, and the edge magnetic force attenuation rate is less than 15%. Even if the device is vibrated by external forces, the contact resistance is still maintained at less than 10mΩ. The Bluetooth networking module 4 monitors the channel interference intensity in real time, and automatically switches to channel 37 for priority communication when there is Wi-Fi co-frequency interference in the environment. The low-power BLE5.2 protocol stack is developed simultaneously to control the power consumption of each device to 3mA@3.3V power supply state, ensuring that the working current does not exceed 500mA when the device is running at full load.

[0053] The gold-plated contact layer of the magnetic adsorption buckle 33 forms a bidirectional conductive path with the metal shell of the device, which serves as both a physical fixing interface and a signal conductor. The Bluetooth networking module 4 utilizes this electrical connection characteristic to package the device collected data into 128-byte frames through GFSK modulation and transmits it. Each frame takes 18ms to transmit. When multiple devices initiate requests at the same time, the module uses the TDMA time division multiplexing mechanism for polling processing, combines the data transmission protocol to generate a data stream with a unified timestamp, and automatically generates a three-dimensional space coordinate map after processing by the terminal AP. The entire process from device adsorption and fixation to cloud data display takes less than 220ms, which saves 85% of the operating steps of cable connection and manual pairing compared to traditional solutions, and builds a seamless workflow of physical installation and digital collaboration.

[0054] Please see attached Figure 4 -Attached Figure 6 The honeycomb unit pore size of the outer layer 51 honeycomb structure is 3-5mm, the wall thickness is 0.8mm, and the honeycomb depth is 8-10mm; the inner layer 52 EVA shock-absorbing cabin includes an independent compartment, and the inner wall of the compartment is bonded with 5mm thick high-density EVA foam; the telescopic component 53 has a two-stage telescopic aluminum rod 531 and a roller 532, the roller 532 has a diameter of 80mm and a built-in shock-absorbing bearing, and the inclination angle of the shell is 45 degrees when the pull rod is fully unfolded.

[0055] Specifically, when the box body is subjected to external impact, the honeycomb units with a gradient distribution of pore diameters in the outer layer 51 form a buffer zone through a three-dimensional pore cavity structure with a depth of 8-10 mm. The 5-mm-thick high-density EVA foam on the inner wall of the independent compartment of the inner layer 52 immediately deforms and compresses, and its 85% energy absorption efficiency couples with the honeycomb structure to attenuate the impact acceleration acting on the equipment inside the box. The two-stage telescopic aluminum rod 531 of the telescopic assembly 53 automatically enters the working state when being towed: the 80-mm diameter of the roller 532 cooperates with the shock-absorbing bearing to form a ground clearance of 28 mm, increasing the passability on gravel roads by 44% compared with traditional 60-mm rollers.

[0056] When the telescopic rod is fully extended, the 45-degree inclination angle design makes the center of gravity projection point accurately fall directly above the wheel axle, effectively avoiding the lateral oscillation torque during towing and solving the resonance problem of the box body during multi-terrain travel.

[0057] Please refer to the appendix Figure 8 , the Bluetooth networking module 4 supports the data transparent transmission protocol and synchronizes the data collected by multiple devices to the mobile terminal in real time; the pan-tilt control module 2 has an inclination angle memory function built in, and automatically calls the historical horizontal parameters for pre-calibration when the position of the carbon fiber leg tube 11 changes.

[0058] Specifically, when the Bluetooth networking module 4 receives the concurrent data streams of the multi-sensor nodes' laser rangefinder / electronic compass, the data transparent transmission protocol starts 128-byte framed packaging and allocates transmission time slots through the priority channel management algorithm. Each device sends spatial coordinate data at a rate of 2 Mbps within a fixed window period of 0.2 ms. The built-in STM32F4 main control of the module receives the signals through dynamic time division multiplexing and completes the data aggregation of up to 4 devices within 180 ms. The low-power BLE broadcast mode is synchronously started to enable the mobile terminal tablet to draw the thermal map of the three-dimensional space distribution of the devices in real time.

[0059] The nine-axis MEMS sensor of the pan-tilt control module 2 continuously collects attitude data, records the pitch / roll historical parameters with a resolution of ±0.05° at a period of 10 ms, and the storage depth is ≥200 groups. When the position change signal is triggered by the locking device of the telescopic section of the carbon fiber leg tube 11, the control unit immediately calls the 10 groups of historical horizontal parameters closest to the current position and generates a pre-calibration compensation matrix through Kalman filtering. Cooperating with the double-closed-loop stepper motor to drive the pitch axis to rotate for pre-calibration, the pan-tilt inclination angle error is converged within 0.3° within 1.5 seconds, solving the problem of inaccurate reconstruction data caused by the displacement of the tripod.

[0060] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic calibration tripod, characterized in that, include: A foldable leg tube assembly (1), wherein a carbon fiber leg tube (11) has a gravity sensor (12) embedded therein, wherein the gravity sensor (12) includes a gyroscope (13); A pan / tilt control module (2) is arranged on the top of the foldable leg tube assembly (1) and is integrated with a three-axis micro servo motor (21), receives a tilt signal from the gravity sensor (12) and generates a driving force; A multi-device linkage fixing frame (3) comprises a rotatable aluminum alloy guide rail (31) and a standardized card slot (32), wherein the card slot (32) is provided with a magnetic adsorption buckle (33); A Bluetooth networking module (4) is electrically connected to the standardized card slot (32) and is configured to automatically pair with a card-mounted device and is uniformly powered via a Type-C interface; A portable anti-fall housing (5) covers a foldable leg tube assembly (1), a pan / tilt control module (2), a multi-device linkage fixing frame (3) and a Bluetooth networking module (4), and is composed of an outer layer (51) of a glass fiber honeycomb structure, an inner layer (52) of an EVA shock-absorbing cabin and a side wall embedded telescopic assembly (53).

2. The automatic calibration tripod according to claim 1, characterized in that, The three-axis micro servo motor (21) and the gravity sensor (12) form a closed-loop control system, with a horizontal calibration error of less than 0.5 degrees and a completion time of less than 3 seconds.

3. The automatic calibration tripod according to claim 1, characterized in that, Each leg of the foldable leg assembly (1) is provided with a stepped locking mechanism (6), and the outer wall of the carbon fiber leg (11) is covered with a scratch-resistant and wear-resistant coating.

4. An automatic calibration tripod according to claim 1, characterized in that, The magnetic adsorption buckle (33) is arranged in an array of neodymium magnets, and its adsorption force is capable of fixing a device with a mass greater than 2 kg.

5. The automatic calibration tripod according to claim 1, wherein The Bluetooth networking module (4) supports simultaneous connection to at least 4 devices, and the data synchronization delay is less than 200ms.

6. An automatic calibration tripod according to claim 1, wherein, The honeycomb unit pore diameter of the outer layer (51) honeycomb structure is 3-5 mm, the wall thickness is 0.8 mm, and the honeycomb depth is 8-10 mm.

7. An automatic calibration tripod according to claim 1, characterized in that, The inner layer (52) EVA shock-absorbing cabin comprises an independent compartment, and the inner wall of the compartment is laminated with 5 mm thick high-density EVA foam.

8. An automatic calibration tripod according to claim 1, wherein, The telescopic assembly (53) comprises a two-stage telescopic aluminum rod (531) and a roller (532). The roller (532) has a diameter of 80 mm and a built-in shock-absorbing bearing. When the pull rod is fully extended, the outer shell has an inclination angle of 45 degrees.

9. The automatic calibration tripod according to claim 1, wherein, The Bluetooth networking module (4) supports a data transparent transmission protocol and synchronizes data collected by multiple devices to the mobile terminal in real time.

10. An automatic calibration tripod according to claim 1, characterized in that, The pan / tilt control module (2) has a built-in tilt angle memory function, and automatically calls historical horizontal parameters for pre-calibration when the position of the carbon fiber leg tube (11) changes.

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