The difference between lidar and laser pointer
During the application of lidar, the first thing encountered is the problem of light source interference. Light source interference is divided into natural light sources and artificial light sources (such as lights, laser signals, etc.) because of the different sources and properties. Lidar is an indispensable and important sensor for robots to walk intelligently. It allows the robot to perceive the surrounding environment in an unknown environment, construct high-precision contour information of the environment where it is located, and play an important role for the robot's subsequent positioning and navigation. However, Lidar is susceptible to various environmental lighting in actual work, which may interfere with the data generated by Lidar to some extent. Normally, the environmental lighting effects of lidar work generally include sunlight projected from floor-to-ceiling windows, various indoor artificial light sources, etc. These light interference problems are also an important quality control factor for lidar before leaving the factory.
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Daytime laser use: During the daytime, you need to use a high-power Green laser pointer. The green color is because at the same mW intensity, the green laser is 5-7 times brighter than any other color laser. When used in the daytime, at least 200mW is required under 532nm green light, the higher the power, the better.Night laser use: Here you can choose the beam color and output power more freely. Compared with the daytime, the laser will appear brighter at night, so you can be very flexible. The ideal range for night use is a green laser of 30mW or higher. But even with low power like 5mW, it can be seen at night. Long distance: The higher the mW power, the longer the distance the better, whether it is day or night. However, if you want to signal more than 1000 feet during the day, you need at least 500mW of green light, or if it is 100mW of green light at night.
2021-09-24 11:11:59
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