In addition to the unmanned vehicle field, how can laser radar be used?
Let me talk about what is a laser ranging radar? The laser ranging radar uses a laser as a light source to measure the light by remotely detecting the laser and the detected non-interacting light wave signal. Lidar can also be widely used to combat electronic warfare, anti-radiation missiles, ultra-low-altitude penetration, missile and projectile guidance, and land-sweeping. In the consumer market, lidar technology is used in robots and unmanned vehicles.
So, in addition to these, what other areas can laser ranging radar be used in? In fact, the laser radar was born not only for robots, but recently we learned about it because of robots and unmanned vehicles. Traditionally, lidar can be used in the field of industrial safety detection, just like the laser wall in science fiction films. When someone enters, the system can respond quickly and issue an early warning. At the same time, lidar is also widely used in the field of space surveying and mapping. In simple terms, it works by emitting a laser to scan the object to obtain the three-dimensional coordinates of the surface of the object being measured.
3D laser scanning technology is also known as real-time copying technology. It is said that 3D laser scanning is another technological revolution in the field of surveying and mapping since GPS technology. Its great advantage lies in the ability to quickly scan the measured object, and directly obtain high-precision scanning point cloud data without the need of a reflective prism, which can efficiently perform three-dimensional modeling and virtual reproduction of the real world.
An office environment built with the SLAMTEC RPLIDAR A2 laser radar 
3D indoor scanning modeling by SLAMTEC RPLIDAR A2 laser radar
In the new media industry, multi-touch screens are no longer unusual, but the traditional multi-touch technology faces three major technical difficulties:
1. The traditional RC screen cannot achieve an oversized multi-touch screen;
2. The time the consumer wants to detect is shorter, and the touch screen touches more smoothly;
3. The impact of ambient light.
Among the multi-touch technologies, there is a technique called "LLP (laser light plane) technology, which uses an infrared laser device to project infrared rays onto a screen. When the screen is blocked, the infrared light will be reflected, and the camera under the screen will capture the reflection and then react to the system to react. The main technical advantages include:
1, oversized
The multi-touch screen can support the size of any display from 17 inches to 200 inches, enabling the large infrared multi-touch wall to meet the needs of large touch devices in different industries.
2, sensitive
The reaction speed has been further improved, enabling a response speed of up to 5ms. Clicking, dragging, double-clicking, zooming in and out of the image can be easily and accurately implemented on a multi-touch screen.
3, strong ability to resist ambient light
Effectively ensure that the touch screen can still perform normal work under any light, and achieve the best touch effect whether indoors or outdoors.
As the core technical parameters, the sampling frequency and sampling times are undoubtedly an important factor in determining the working effect of the laser radar. SLAMTEC's latest laser radar, the RPLIDAR A2, has a sampling frequency of up to 10 Hz and a sampling rate of 4,000 times per second, which is the highest speed in the current low-cost lidar range.
In practical applications, service robots can obtain more dense sampling points, achieve rapid response to obstacles, and carry out more rapid and timely autonomous obstacle avoidance; when using laser radar for environmental exploration and map construction, more precise can be obtained. Picture; in multimedia applications, multi-touch on large screens will be faster and more accurate.
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