In recent years, with the increasingly obvious trend of intelligence, #LIDAR，Laser scanner, as the "eye", has also made great progress. However, the use of laser radar is not limited to driverless vehicles, and there are more application scenarios to be explored. This paper will classify and summarize the specific applications of LIDAR sensor.

     1 Industrial manufacturing: The application of LIDAR in industry and manufacturing mainly focuses on mobile robots and industrial automation processes。

      In the field of industrial automation, to control human capital and improve efficiency, most enterprises have begun to introduce automated production lines to build intelligent production workshops. At the same time, this trend has also entered the follow-up warehousing and logistics field. Enterprises have introduced handling robots to manage warehouses, realizing the automatic operation and management of warehouses, which cannot be separated from laser radar.

     In the production process, the laser sensor can assist in monitoring the materials on the conveying equipment. The sensor is installed in the middle of the beam of the support frame. During the measurement, the laser sensor quickly scans the materials on the conveyor belt, and transmits the scanned data to the computer to realize detection object size measurement which can effectively ensure the smooth process flow on the conveyor belt.

        AGV/AMR is also an industry with many applications of LIDAR. The use of laser sensor aided navigation can enable the AGV car to travel along the specified path, while simultaneously providing safety protection and a variety of load transfer functions. At present, there are main two types of laser sensors used by mobile robots: one is navigation LIDAR, which is responsible for path planning and guidance of AGV;  The second is obstacle avoidance LIDAR, which is responsible for the safety protection in the AGV traveling area.

2  Smart Management: Lidar is widely used in the field of intelligent governance, with application scenarios covering traffic construction, security and other fields.

     In the field of traffic construction, the application of laser scanner is very common. At the entrance of the high-speed toll station, the laser sensor is used to replace the traditional infrared light curtain vehicle separator to realize vehicle inspection, vehicle counting and safety detection; The vehicle measurement system based on LIDAR can detect the contour of vehicles in real time, persuade vehicles with super elevation, super width and super length to return, and prevent them from entering highway road.

        In the security field, the laser sensor can cooperate with the monitoring system to achieve regional protection or border protection, prevent illegal intrusion, and prevent pedestrians or other objects from entering the dangerous area; At the same time, the laser radar can also be used for access control, such as on the top of the automatic retractable door, which can effectively prevent accidents such as pinching, and can also be used as an effective protective barrier.

3 Intelligent Logistics: Smart logistics is also one of the industries with the most applications of LIDAR, covering the whole process from handling to warehousing, and even covering port logistics and other fields.

       In terms of intelligent storage, the laser sensor can assist the stacker to realize the automatic warehousing of goods. The laser radar equipped with the stacker can ensure accurate obstacle avoidance when the stacker moves, and can also be used for auxiliary positioning. This kind of three-dimensional intelligent storage based on stacker has been widely used in various manufacturing scenarios, especially in the lithium battery industry.

       There are two major difficulties in port logistics. One is the deviation correction of large vehicles, and the other is the interactive operation of container grabbing, which can be effectively solved by carrying LIDAR.  Regarding the deviation correction，When the crane is running, the driver needs to manually correct and locate the deviation, which increases the operation difficulty of the crane and also increases the labor intensity of the driver. With the application of automation technology in the port, the installation of laser LIDAR and image recognition positioning technology on the crane can realize the high-precision deviation correction and positioning function of the crane, which can effectively improve the automatic operation efficiency of RTG crane.

4 Commerce Fields:With the development of LIDAR technology, safety has been fully recognized, and has now entered the business, mainly in service robots, intelligent parking, media interaction and other subdivisions.

      In the field of service robots, service robots are mainly used in food delivery, hospitals, cleaning, disinfection and other scenes. Carrying laser radars can effectively improve their work efficiency.

     In the field of intelligent parking, The LIDAR is a powerful aid to the automatic parking system. Based on the vehicle dispatching system and in combination with the laser radar sensor, it can detect the vehicle status in the moving process, and effectively ensure the safety of the system and surrounding operators and equipment in all cases.

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