[ China Instrument Network Instrument Development ] Recently, the second generation mobile measurement system jointly developed by Chongqing Survey and Chongqing Digital City Technology Co., Ltd. was officially released. The device can be mounted on any vehicle and can be measured at ambient speed with a precision of up to centimeter.
Located in Jiangbei District, Chongqing Digital City Co., Ltd. is a state-owned and private capital mixed ownership enterprise specializing in the integration of geographic information system application development, geographic information services and digital exhibition halls. It has undertaken many national research projects and has won Chongqing Science and Technology. More than 70 provincial and ministerial awards such as the First Prize for Progress and the 19th China Patent Excellence Award.
The vehicle-mounted mobile measurement system refers to an integrated measurement system composed of an integrated positioning and positioning system, a control system, a measurement sensor (a laser radar, a panoramic camera, etc.) on a vehicle platform, and is a novel intelligent measurement equipment.
In 2014, the first generation of mobile measurement system products developed by Chongqing Digital City Company has been applied to urban surveying and mapping, urban infrastructure fine management, rail transit construction, river improvement, and mining in Guizhou, Shaanxi, Fujian, Sichuan, Chongqing and other places. Issues such as incident handling and public services.
Different from the first generation of mobile measurement system products, the second generation products have been fully upgraded and the technology content is also higher. A central control unit is used to store the collected data in the trunk of the car; a speed sensor is mounted on the tires of the vehicle; a lidar, an inertial navigation system, a panoramic camera and a global satellite navigation system are installed on the roof. After the vehicle is launched, the surveyor only needs to operate on a flat plate. These devices can automatically measure, quickly collect high-precision point clouds and panoramic image data, and obtain basic information of various cities, which can realize high-precision point cloud and real-time image data. Quick access, processing and publishing.
The most powerful thing is that the measurement accuracy of the system can reach centimeter level (our current mobile phone GPS navigation accuracy is about 10 meters), and almost every leaf of the sidewalk trees on the road can be seen. And its efficiency, according to the measurement environment, can reach 30-60 kilometers per hour, which is dozens or even hundreds of times of manual measurement. The collection speed is fast, the degree of automation is high, and the result data is generated quickly, which is unmatched by traditional collection methods.
With this high-speed, high-precision measurement "black technology", many time-consuming and laborious tasks become simple and easy. Vehicles pass by, various information such as roads, traffic signs, billboards, street trees, street lights, houses, etc. are all in the bag.
In the next step, researchers will be able to form all kinds of information needed for smart city construction through data processing, including generating street view data and three-dimensional three-dimensional spatial data, providing virtual and real-time dynamic simulation and geographic information of urban holographic spatial data for multiple industries. Integration provides support; the future can also be used to create high-precision navigation maps that combine augmented reality and driverless technology to improve people's travel experience.
(Source: Science and Technology Daily, Chongqing Daily, People's Daily)
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