Pan-tilt surveying and mapping camera with laser range finder

Abstract

The invention discloses a tripod head surveying and mapping camera with a laser range finder, which comprises a three-axis tripod head stabilizing system, a high-resolution camera is fixedly mounted on one side of the three-axis tripod head stabilizing system, and a high-precision laser range finder is fixedly embedded in the high-resolution camera. A data processing device is fixedly embedded in the three-axis pan-tilt stabilizing system, and the three-axis pan-tilt stabilizing system supports motion control of three degrees of freedom of yawing, pitching and rolling and is used for keeping the high-resolution camera aligned with a ground target; according to the cradle head surveying and mapping camera with the laser range finder, the high-resolution camera, the high-precision laser range finder and the data processing device are arranged on the three-axis cradle head stabilizing system, so that the surveying and mapping precision and real-time performance are improved, the limitation of severe weather and complex environment is eliminated, the data processing flow is optimized, and the surveying and mapping efficiency is improved. And meanwhile, instant feedback and decision support can be realized, so that the surveying and mapping cost and the manpower demand are reduced, and the use scene of the surveying and mapping camera is wider.

Description

Technical Field

[0001] The present invention relates to the technical field of aerial surveying, and specifically to a pan-tilt mapping camera with a laser rangefinder. Background Technique

[0002] As is well known, in the field of traditional aerial surveying and mapping, the use of unmanned aerial vehicles (UAVs) has been rapidly developing due to their high efficiency, flexibility, and cost-effectiveness, especially in various application scenarios such as topographic mapping, agricultural surveillance, and urban planning. The pan-tilt mapping camera system carried by UAVs is a crucial part of this technology. Its main function is to keep the camera in a specific stable posture during UAV flight to obtain high-quality image data. This stability is particularly important for subsequent image analysis and data processing because it directly relates to the accuracy of the mapping results.

[0003] However, despite the fact that the pan-tilt can effectively reduce the vibration and offset during UAV flight, the traditional mapping camera system still faces some key challenges. First, it is difficult for existing systems to achieve precise positioning of ground target objects far from the UAV base station. Generally speaking, the positioning system of UAVs can only provide the position data of the UAV itself and cannot directly determine the precise geographical coordinates of the target under the camera lens. This limits the application scenarios of UAV mapping, especially in work that requires high-precision measurement. Second, to measure the exact size of ground objects from aerial photos, current methods require complex post-processing techniques for each photo, such as stereophotogrammetry and photogrammetric interpretation. This not only requires expensive software and specially trained operators, but also the processing process is cumbersome and time-consuming. In some actual situations, such as emergency response to natural disasters, quickly and effectively obtaining accurate information is the key to rescue work, and traditional methods are difficult to meet this immediate requirement. Third, traditional mapping technologies are often affected by the measurement accuracy and efficiency when facing complex terrains or variable weather conditions. For example, under cloudy or foggy weather conditions, the functions of optical cameras are limited, which will directly affect the progress of mapping work. Therefore, it has become crucial to develop a new type of mapping camera system that can operate stably under various environmental conditions and provide accurate position and size measurements of ground objects in a timely manner.

[0004] Based on the above background, the present invention provides a breakthrough solution, namely a pan-tilt mapping camera with a laser rangefinder. Summary of the Invention

[0005] The purpose of the present invention is to provide a pan-tilt mapping camera with a laser rangefinder to solve the problems raised in the above background technique.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a pan-tilt mapping camera with a laser rangefinder, comprising: a three-axis pan-tilt stabilization system, a high-resolution camera is fixedly installed on one side of the three-axis pan-tilt stabilization system, a high-precision laser rangefinder is fixedly embedded inside the high-resolution camera, and a data processing device is fixedly embedded inside the three-axis pan-tilt stabilization system.

[0007] By adopting the above technical solutions, the three-axis gimbal stabilization system can ensure the stability of the high-resolution camera during the movement of the drone, and can also enable the high-resolution camera to respond quickly to vibration and movement. The high-precision laser rangefinder can directly measure the distance from the lens of the high-resolution camera to the ground target, so that the sensor data on the drone can be used to calculate the precise latitude, longitude and altitude information of the ground target object, thereby improving the accuracy and efficiency of surveying and mapping.

[0008] Preferably, the three-axis gimbal stabilization system supports motion control of three degrees of freedom: yaw, pitch and roll, so as to keep the high-resolution camera pointed at a ground target.

[0009] By adopting the above technical solution, the stability of the high-resolution camera when used on a drone can be improved.

[0010] Preferably, the high-precision laser rangefinder is used to align with and measure the straight-line distance of the ground target object under the high-resolution camera lens.

[0011] By adopting the above technical solution, it is possible to reduce the ranging error.

[0012] Preferably, the high-resolution camera is a low-distortion optical camera.

[0013] By adopting the above technical solution, clear image data can be easily obtained.

[0014] Preferably, the resolution of the high-resolution camera is 8192*5460.

[0015] By adopting the above technical solution, it is possible to facilitate fine calibration in the subsequent calibration process.

[0016] Preferably, the data processing device is used to fuse and analyze the data of the high-precision laser rangefinder, the position of the three-axis gimbal stabilization system, the imaging parameters of the high-resolution camera, and the remote sensing data of the UAV itself, and generate a final measurement result.

[0017] By adopting the above technical solution, the device can be equipped with a decision-making center.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] The pan-tilt mapping camera with a laser rangefinder improves the mapping accuracy and real-time performance by setting a high-resolution camera, a high-precision laser rangefinder, and a data processing device on a three-axis pan-tilt stabilization system. It gets rid of the limitations of bad weather and complex environments, optimizes the data processing flow, and can also achieve instant feedback and decision support. Furthermore, it reduces the mapping cost and manpower requirements, making the usage scenarios of the mapping camera more extensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic structural diagram of the pan-tilt mapping camera with a laser rangefinder according to the present invention;

[0021] Figure 2 FIG. is a schematic structural diagram of the data processing device in the pan-tilt mapping camera with a laser rangefinder according to the present invention;

[0022] Figure 3 FIG. is a schematic structural diagram of the three-axis pan-tilt stabilization system in the pan-tilt mapping camera with a laser rangefinder according to the present invention.

[0023] In the figures: 1, three-axis pan-tilt stabilization system; 2, high-precision laser rangefinder; 3, high-resolution camera; 4, data processing device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1 - 3 , the present invention provides a technical solution: a pan-tilt mapping camera with a laser rangefinder, including: a three-axis pan-tilt stabilization system 1;

[0026] First, in order for the three-axis pan-tilt stabilization system 1 to ensure the attitude stability of the high-resolution camera 3 during the movement of the unmanned aerial vehicle, and also enable the high-resolution camera 3 to quickly respond to vibrations and movements, the high-precision laser rangefinder 2 can directly measure the distance from the lens of the high-resolution camera 3 to the ground target. Thus, it can use the sensor data on the unmanned aerial vehicle to calculate the accurate longitude, latitude, and altitude information of the ground target object, thereby improving the mapping accuracy and efficiency; a high-resolution camera 3 is fixedly installed on one side of the three-axis pan-tilt stabilization system 1, a high-precision laser rangefinder 2 is fixedly embedded inside the high-resolution camera 3, and a data processing device 4 is fixedly embedded inside the three-axis pan-tilt stabilization system 1;

[0027] Secondly, in order to improve the stability of the high-resolution camera 3 when used on the drone, the three-axis gimbal stabilization system 1 supports motion control in three degrees of freedom, namely yaw, pitch, and roll, to keep the high-resolution camera 3 pointed at the ground target; in order to facilitate reducing the ranging error, the high-precision laser rangefinder 2 is used to align and measure the straight-line distance of the ground target object under the lens of the high-resolution camera 3; in order to facilitate obtaining clear image data, the high-resolution camera 3 is a low-distortion optical camera; in order to facilitate fine calibration in the subsequent calibration process, the resolution of the high-resolution camera 3 is 8192*5460; in order to enable this device to have a decision-making center, the data processing device 4 is used to fuse and analyze the data of the high-precision laser rangefinder 2, the position of the three-axis gimbal stabilization system 1, the imaging parameters of the high-resolution camera 3, and the remote sensing data of the drone itself, and generate the final measurement result.

[0028] Summarize and sort out the working steps of this solution according to the above technical solution: When in use, the three-axis gimbal stabilization system 1 can ensure the attitude stability of the high-resolution camera 3 during the movement of the drone, and can also enable the high-resolution camera 3 to respond quickly to vibrations and movements. The high-precision laser rangefinder 2 can directly measure the distance from the lens of the high-resolution camera 3 to the ground target, so as to calculate the accurate longitude, latitude, and altitude information of the ground target object by using the sensor data on the drone, thereby improving the accuracy and efficiency of surveying and mapping.

[0029] It should be noted that the specific calculation steps when the present invention operates are as follows: First, collect information on the longitude, latitude, altitude, heading, ranging distance of the drone, and the pitch angle of the three-axis gimbal stabilization system 1; secondly, calculate the horizontal and vertical distances according to the pitch angle of the three-axis gimbal stabilization system 1; thirdly, calculate the distance in the northeast local coordinate system according to the current heading of the drone; finally, calculate the target longitude and latitude according to the current longitude and latitude of the drone.

[0030] In summary: This gimbal surveying and mapping camera with a laser rangefinder improves the accuracy and real-time performance of surveying and mapping by setting the high-resolution camera 3, the high-precision laser rangefinder 2, and the data processing device 4 on the three-axis gimbal stabilization system 1, and gets rid of the limitations of bad weather and complex environments, optimizes the data processing process, and can also achieve instant feedback and decision support, thereby reducing the surveying and mapping costs and manpower requirements, and making the application scenarios of the surveying and mapping camera more extensive.

[0031] Parts not involved in the present invention are the same as or can be implemented by using the prior art. Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pan-tilt mapping camera with a laser rangefinder, characterized in that, Including: A three-axis gimbal stabilization system (1), on one side of the three-axis gimbal stabilization system (1), a high-resolution camera (3) is fixedly installed. Inside the high-resolution camera (3), a high-precision laser rangefinder (2) is fixedly embedded. Inside the three-axis gimbal stabilization system (1), a data processing device (4) is fixedly embedded.

2. The pan-tilt mapping camera with a laser rangefinder according to claim 1, characterized in that: The three-axis gimbal stabilization system (1) supports motion control in three degrees of freedom: yaw, pitch, and roll, to keep the high-resolution camera (3) aimed at a ground target.

3. The pan-tilt mapping camera with a laser rangefinder according to claim 2, wherein: The high-precision laser rangefinder (2) is used to aim at and measure the straight-line distance of a ground target object under the lens of the high-resolution camera (3).

4. The pan-tilt mapping camera with a laser rangefinder according to claim 3, characterized in that: The high-resolution camera (3) is a low-distortion optical camera.

5. The pan-tilt mapping camera with a laser rangefinder according to claim 4, characterized in that: The resolution of the high-resolution camera (3) is 8192*5460.

6. The panoramic mapping camera with a laser rangefinder according to claim 1, characterized in that: The data processing device (4) is used to perform fusion analysis on the data of the high-precision laser rangefinder (2), the position of the three-axis gimbal stabilization system (1), the imaging parameters of the high-resolution camera (3), and the remote sensing data of the UAV itself, and generate a final measurement result.

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