Scientific & technological innovation
Engineering surveying and mapping equipment
1. Oblique photogrammetry system
The company has 10 mainstream tilt photogrammetry drones and imaging systems of Feima, Harwar, Keweitai and other brands, all equipped with precision RTK modules and high-quality tilt five-camera modules; with effective endurance time as 40~50 minutes, which means very good endurance in the rotorcraft model, which can greatly improve the efficiency of field data collection.
With the gradual maturity of tilt-photogrammetry-based data acquisition and processing methods, the Company has extensively applied the tilt-photogrammetry-based 3D modeling to engineering survey, planning and design, engineering digitalization and other fields, with an average annual working area of more than 500km², where most of the models have a resolution better than 3cm resolution, and a strong data acquisition and processing capability has been formed.
| Harwar UAV Tilt Photogrammetry System | Feima D2000 UAV Tilt Photogrammetry System |
| 3D model by Tilt Photogrammetry |
2. Airborne laser scanning system
Following the introduction of ground laser scanning equipment, the Company was equipped with hardware and software equipment for airborne laser scanning system in the first half of 2020, and the main components are Keweitai six-rotor UAV + RIEGL SZT-R250 laser + SONY A6000 camera. The system is widely used in hydropower station site selection and survey, electricity patrol, traffic works design and line selection, mine treatment and other projects. With the introduction of airborne laser scanning equipment, laser equipment in large-scale mapping projects have been more and more widely used, successively in Hunan Anhua pumped storage power station, Chongqing Liziwan pumped storage power station, Anhui Chaohu mine treatment and other projects, with the output value of tens of millions. Compared with the traditional manual survey method, it greatly improves the work efficiency; and compared with conventional aerial surveys, its accuracy is more guaranteed.
| Keweitai six-rotor drone | RIEGL SZT-R250 laser + SONY A6000 camera |
| Digital Surface Model (DSM) | Digital Elevation Model (DEM) |
| Digital Orthophoto (DOM) | Digital Line Drawing (DLG) |
3. Ground laser scanning system
The company took the lead in hunan province to introduce Riegl LMS Z-620 (long range, high accuracy), Faro S350 (fast scanning speed, portable) and other ground laser scanning systems. Through relevant technical research and application practice, good application has been achieved with success results in the fields of wind turbine tower deformation detection, high-precision topographic mapping, three-dimensional simulation, etc., and a number of processing systems with independent intellectual property rights has been developed, i.e. laser scanning topographic mapping system according to different application scenarios etc., forming certain technical advantages in the sector.
| 3D laser scanner FARO X350 | Scan result of underground channel |
| Laser Scanning Outcome 1 - 3D Fine Modeling (Statue) | Laser Scanning Outcome 2 - true 3D model |
4. Conventional aerial survey system
UAV data collection replaces the traditional manual mapping and is widely used in infrastructure, renewable energy, municipal utilities and hydropower station reservoir area works, shortening field work hours, changing the complex and inefficient production and management patterns in the past, and improving product quality and production efficiency. The Company has 3 fixed-wing drones such as Feima V100, Zhongyuntu F8, Topcon Sirius and other fixed-wing UAVs, 10 multi-rotors UAVs, and 8 UAV operators have obtained the unmanned-aerial-vehicle-system pilot certificate issued by AOPA (Aircraft Owners and Pilots Association of China). In recent years, about 20 experienced aerial survey data processing persons have been trained, and an aerial survey data processing group has been established, which has strong UAV image data processing capabilities.
| Feima V100 vertical take-off and landing UAV system | Zhongyuntu F8 UAV system |
| Sirius UAV system | |
5. Multi-beam bathymetry system
The Company has introduced the first multi-beam bathymetry system in Hunan province, which is characterized by fast speed, high accuracy and strong reliability and can meet the underwater terrain or cross-sectional survey in various scales for hydropower station reservoir areas, lakes, offshore areas, etc. And underwater three-dimensional models can be built with the high-density bathymetric data. The system can measure depths of up to 500 meters, and has been applied to underwater terrain surveying and three-dimensional modeling in the reservoir areas of Weifang and Dongying offshore wind farms in Shandong Province and Longtan, Sanbanxi and other hydropower stations, with a total operating scope of more than 1000km², and the accuracy and reliability have been verified.
| SONIC 2022 multi-beam sounder | Multi-beam equipment workstation |
| High-precision 3D seabed terrain model | Seabed shipwreck detection |
6. Unmanned vessel bathymetric equipment
In order to meet the needs for surveying and mapping for different waters, the Company has introduced iBoat BM1 intelligent unmanned survey vessel and Huawei No. 3 unmanned survey vessel. The iBoat BM1 has functions as active detection and avoidance of obstacles and real-time video transmission, which can realize bathymetry and status survey for river channels and lakes in complex situations. Huawei No. 3 unmanned survey vessel has a pioneering high-speed motor, the vessel speed can reach 8m/s, has carried out survey tasks in the Jinsha River, the Lancang River etc., which are featured by river channels with multiple shoals and water turbulence, showing excellent performance.
| Unmanned survey vessel | |
7. High-precision measurement robot
In order to meet the needs for construction control network of large-scale hydropower projects and other precision engineering survey, establishment of monitoring networks and observation works, the Company is equipped with dozens of high-precision measuring robots such as Leica TS30, TS60, TM30 and TCA2003, which have angular accuracy reaching 0.5" and ranging accuracy of 0.6mm+1ppm and can integrate automatic target recognition, automatic collimation, automatic goniometering and ranging, automatic target tracking and automatic recording in one and can meet the precision survey of various large projects. It has been widely used in the high-precision construction control networks of large water conservancy hubs such as Longtan and Xiangjiaba, and pumped storage power stations as Meizhou, Pingjiang and Tianchi, forming a strong brand effect.
