The RPLIDAR A2M7 is the next generation low cost 360 degree 2D laser scanner (LIDAR) solution developed by SLAMTEC. It can take up to 16000 samples of laser ranging per second with high rotation speed. And equipped with SLAMTEC patented OPTMAG technology, it breakouts the life limitation of traditional LIDAR system so as to work stably for a long time. The system can perform 2D 360-degree scan within a 16-meter range. The generated 2D point cloud data can be used in mapping, localization and object/environment modeling.
Compared with RPLIDARs in other series, RPLIDAR A2M7 has a more stable performance when detecting objects in long distance and objects in white or black alternatively, which is ideal for map building in the indoor environment within a 16-meter ranging radius. Therefore, it can be widely applied in many consumeroriented business scenarios. RPLIDRA A2M7 under enhanced mode works with the maximum ranging radius and sampling rate to realize an optimistic mapping performance in the indoor environments.
The typical scanning frequency of RPLIDAR A2M7 is 10Hz(600rpm), and the frequency can be freely adjusted within the 5-15Hz range according to the specific requirements. With the 10Hz scanning frequency, the sampling rate is 16kHz and the angular resolution is 0.225°
Due to the improvements in SLAMTEC hardware operating performance and related algorithm, RPLIDAR A2M7 works well in all kinds of indoor environment. Meanwhile, before leaving the factory, every RPLIDAR A2M7 has passed the strict testing to ensure the laser output power meet the eye-safety standard of IEC60825 Class 1.
The RPLIDAR A2M7 consists of a range scanner core and the mechanical powering part which makes the core rotate at a high speed. When it functions normally, the scanner will rotate and scan clockwise. And users can get the range scan data via the communication interface of the RPLIDAR and control the start, stop and rotating speed of the rotate motor via PWM.
The RPLIDAR A2M7 comes with a rotation speed detection and adaptive system. The system will adjust the angular resolution automatically according to the actual rotating speed. And there is no need to provide complicated power system for RPLIDAR. In this way, the simple power supply schema saves the BOM cost. If the actual speed of the RPLIDAR is required, the host system can get the related data via communication interface.
The detailed specification about power and communication interface can be found in the following sections.
The RPLIDAR A2M7 is based on laser triangulation ranging principle and adopts the high-speed vision acquisition and processing hardware developed by SLAMTEC. The system ranges more than 16000 times per second.
During every ranging process, the RPLIDAR emits modulated infrared laser signal and the laser signal is then reflected by the object to be detected. The returning signal is then sampled by vision acquisition system in RPLIDAR and the DSP embedded in RPLIDAR starts processing the sample data and outputs distance value and angle value between object and RPLIDAR via communication interface. When drove by the motor system, the range scanner core will rotate clockwise and perform the 360-degree scan for the current environment.