This article describes the characteristics of the lidar sensing technology.
According to the survey, most companies currently focus on the field of unmanned vehicles, robots and unmanned vehicle lidar as their main research direction. The traditional mechanical lidar has gradually changed to solid state lidar. In terms of price, lidar in the field of unmanned driving ranges from tens of thousands to hundreds of thousands, which is generally higher than the price of robots and AGVs. In the future, solid-state, small, low-cost lidar will be the focus of all enterprises.
With the in-depth study of lidar technology by the international community, the superiority of this emerging technology is becoming more and more obvious, and it has its unique advantages in various industries. The following will list leading technologies in several main application areas.
1. smart transportation
As the population of big cities continues to grow, urban traffic has become more crowded, which requires future traffic to be more "smart". The rapid development of the Internet of Things, sensors, and artificial intelligence has made these a reality. Information technology, sensor technology, communication technology and other technologies are widely used in the transportation field.
Lidar is useful in many places. For example, millimeter-wave radar can accurately detect lane-level and millisecond-level data. This detection is microscopic, but also real-time and accurate. It can be used for real-time induction control of signal light controllers. , Adaptive control and green-wave band control are also the basis for the future realization of vehicle-to-vehicle network collaboration.
2. Robotics field
With the use of robots in people's lives, such as factories, warehouses, hotels, shopping malls, restaurants and other environments, people pay more attention to the mobility of robots, and the market's demand for intelligent equipment is increasing. So that obstacle avoidance has become an extremely critical and necessary function.
Obstacle avoidance means that when the mobile robot detects static and dynamic objects that hinder its passage through the lidar sensor during walking, according to the collected obstacle status information, it effectively avoids the obstacle according to a certain method, and finally reaches the target point.
The necessary condition for obstacle avoidance and navigation is environmental perception. Obstacle avoidance in unknown or partially unknown environments requires the use of lidar sensors to obtain information about the surrounding environment, including the size, shape, and location of obstacles. Therefore, sensor technology is moving Robots play a very important role in obstacle avoidance.
3. VR/AR field
VR/AR has also become popular in recent years, and the market prospects are promising. Products such as VR all-in-ones and smart glasses are already on the market, and the applications of AR glasses and AR headsets are also very wide.
In games using AR headsets, the space-aware positioning technology used will use lidar and many supporting optical sensors. Through SLAM technology (real-time positioning and map construction), you can accurately locate your position in three-dimensional space , To enhance the sense of real experience in the game.
4. 3D printing field
In recent years, 3D printing has attracted much attention. It is a technology that uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer based on digital model files. 3D printing, as a cutting-edge and leading intelligent manufacturing technology, will lead the transformation of traditional production methods and production processes, and is expected to become the driving force for a new round of industrial revolution.
In 3D printing, laser radar is also useful. For example, the recently popular Printoptical 3D printing technology is essentially a one-stop technology from CAD design to optical components. The printed optical components do not require imaging. Post-processing such as polishing, grinding and coloring. This technology is mainly based on mature wide-format industrial inkjet printing equipment, which is ejected by UV-cured transparent polymer droplets, and then cured by a strong UV lamp integrated in the print head, which can finally form a variety of geometric shapes , Lidar plays the role of measurement, monitoring and so on.
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