Introduction

This 2D single-line pulsed time-of-flight (ToF) LiDAR scanner can realize the scanning measurement of the environmental profile within 270 degrees of the horizontal plane, with a precision of 2cm within a detection range of 0-25m. With compact and small size, the radar module features small size, light weight, high stability, adjustable angular resolution of 0.1°/0.25°, and near-zero blind zone. This single-line 2D laser radar is designed for medium-to-low speed and long-distance detection, and can be used in areas such as robot environmental perception, map surveying, industrial process monitoring, and security.

How does the Single-line 2D ToF LiDAR work?

Based on the pulsed Time-of-Flight (pToF) methodology, the LiDAR module consists of a laser diode, optical detector, optical system and Time-to-Digital converter. The laser diode emits a beam of by short laser pulses, meanwhile, the Time-to-Digital converter starts, the object’s surface produces a diffuse reflection after the beam hits the target object and the returning beam is detected by the optical detector, and then Time-to-Digital converter stops. Then we can calculate the distance from the device to the measurement target based on the time difference obtained. But this only achieves point-to-point ranging, in order to realize point-to-plane 2-dimensional Scanning, the product has a built-in rotating mirror to realize the ranging of different azimuth with rotating mirror by the motor driving. The ranging results obtained by rotation of the mirror are combined in sequence, which are the set of all the ranging results in a plane.

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