Lidar for Robot perception and SLAM teaching--D200

What is Lidar

Lidar is short for Light Detection And Ranging .A lidar system that uses lasers as a detection method, emitting a beam to detect various feature such as the position, angle of the target. Lidar is like the "eyes" of a robot, helping a robot perceive its surroundings, plan its driving route, and control the robot to reach its intended destination. It can be said that lidar  is one of the important hardware configurations that help robots achieve high-level navigation functions.

What is Triangulation method

A laser beam is projected onto the object at a certain angle of incidence and reflects from the surface of the object.On the other side,a lens is used to converged the light and imaged it on a CCD sensor.When the object moves along the direction of the laser beam, the spot of light on the CCD sensor will move, and the displacement of the spot corresponds to the distance the object has moved. The magnitude of the displacement satisfies a certain mathematical relationship with the distance the object has moved.

Therefore, through algorithm design, the distance between the object being measured and the baseline can be calculated based on the distance of the spot of light from the CCD sensor. As the incident light and the reflected light form a triangle, the calculation of the spot of light location uses the geometric principle of triangles. Hence, this measurement method is called triangulation method.

Packing List:

* 1x LD14P Lidar Sensor

* 1x USB Interface Adapter

* 1x Serial Cable

* 1x Support Card

* 1x Color Box

High-precision, high-performance, cost-effective Lidar - LD14P

Long-range measurement range, fast mapping capability

Equipped with the latest component，LD14P can perceive far-reaching environmental contours with a maximum range up to 8m, and it has high measurement frequency of 4000Hz, and an angle resolution of 0.54°. In addition, through 360° omnidirectional scanning of indoor layout, it can cover all aspects, enabling mobile robots to achieve more precise, faster, and more comprehensive mapping results. Moreover, measuring accuracy is one of the important indicators to measure the performance of lidar, and the high-precision measurement of LD14P can detect "road conditions" in real-time and achieve more detailed path planning. Therefore, even in the face of complex home environments, it can complete tasks according to local conditions and detect changes in the indoor environment in real-time.

Strong anti-sunlight ability, unafraid of window environment

Usually, lidar will be affected by environmental lighting such as sunlight and various artificial light sources in the indoor environment during operation, and these light interference problems will directly affect its performance. The anti-environmental light interference ability of LD14P can reach 80,000 lux, which can meet various indoor environment uses, breaking the limitations of dependence on light conditions and being unafraid of window environments.

Features：

In addition to the sensor unit, the D200 kit supports multi-platform secondary development, including Linux/ROS/ROS2, to help developers quickly use it and reduce development time.

Summary：

D200 provides a great platform for you to gain intuitive and in-depth understanding in the field of lidar, autonomous driving, robot navigation, and robot perception. It is very suitable for use in robot education, university research, enterprise development, makers, open source hardware, and other fields.