{"id":23373,"date":"2019-08-05T11:14:14","date_gmt":"2019-08-05T03:14:14","guid":{"rendered":"\/blog\/?p=23373"},"modified":"2020-04-29T16:21:35","modified_gmt":"2020-04-29T08:21:35","slug":"all-you-need-to-know-about-slamtec-rplidar-mapper-and-slamware","status":"publish","type":"post","link":"https:\/\/www.seeedstudio.com\/blog\/2019\/08\/05\/all-you-need-to-know-about-slamtec-rplidar-mapper-and-slamware\/","title":{"rendered":"All you need to know about Slamtec RPLIDAR, MAPPER and Slamware"},"content":{"rendered":"\n

In this article, we will take you to review the main products line developed by Slamtec: RPLIDAR, MAPPER and Slamware. The latest release SLAMTEC MAPPER M1M1 combines feature of RPLIDAR and Slamware(a modular robot localization and navigation. <\/p>\n\n\n\n

Slamtec RPLIDAR including A serial and S serial. <\/h2>\n\n\n\n

The main difference between the RPLIDAR A serial and the S serial is the measurement principle: the A serial uses the principle of triangulation, and the S serial uses the principle of TOF.<\/p>\n\n\n\n

Overview of Triangular Ranging Lidar and TOF Lidar Principles<\/h4>\n\n\n\n

The principle of the trigonometric method is as shown in the figure below. The laser emits laser light. After the object is irradiated, the reflected light is received by the linear CCD. Since the laser and the detector are separated by a certain distance, according to the optical path, objects of different distances will be imaged in the CCD. On a different location. Calculated according to the triangle formula, the distance of the measured object can be derived.<\/p>\n\n\n\n

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The principle of the trigonometric method<\/figcaption><\/figure><\/div>\n\n\n\n

However, the principle of TOF. As shown in Figure 2, the laser emits a laser pulse, and the timer counts the time of the exit, the return light is received by the receiver, and the time is returned by the timer. When the two times are subtracted, the “time of flight” of the light is obtained, and the speed of light is constant, so the distance can be easily calculated after the known speed and time.<\/p>\n\n\n\n

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The principle of TOF<\/figcaption><\/figure><\/div>\n\n\n\n

In principle, the TOF radar can measure farther distances. In fact, in some applications where distance measurement is required, such as driverless car applications, almost all are TOF radars. The triangular radar is not far off. <\/p>\n\n\n\n

RPLIDAR A1, A2, and A3: low-cost 360-degree laser scanner best for indoor robotic SLAM application<\/h3>\n\n\n\n

RPLIDAR<\/a> is a low-cost LIDAR sensor suitable for indoor robotic SLAM application. The produced 2D point cloud data can be used in mapping, localization and object\/environment modeling. RPLIDAR will be a great tool using in the research of SLAM (Simultaneous localization and mapping)<\/p>\n\n\n\n