The new LIDAR can shrink the light-reflecting device to a chip smaller than a grain of rice, which is smaller, lighter and cheaper than the LIDAR system on the market today. It will be the future eye of the robot.
For robots that want to "live" in the physical world, they need a pair of decent eyes. In general, this is achieved by means of LIDAR (laser detection and measurement). LIDAR is a technique in which light is reflected from the surface of nearby objects to form a 3D effect map around the robot. LIDAR is like a radio detector in basic mechanics, but because it uses light instead of radio waves, the resulting map is more accurate and accurate enough to recognize different leaves on the tree when it is applied to the plane. When it is mounted on a self-driving car, it tracks the movements of knights and pedestrians.
However, the LIDAR system is both expensive and cumbersome. High-end models cost tens of thousands of dollars, even the smallest new systems are as big as ice hockey. LIDAR sensors are usually installed on Google's self-driving car roof.
The reason why this sensor is cumbersome is that it is mechanical and has moving parts. A part of the gyroscope is constantly rotating, so the laser can be scanned 360 degrees, but this also limits the update of LIDAR images. Why do you say that? Because only when the light is reflected on the sensor, the sensor can detect where there is an object. Even if the sensor can infer the position of the object according to its previous position, direction of motion and speed, it still has various blind spots. .
Researchers from MIT and DARPA may have found a solution. They invented a new LIDAR that would shrink the light-reflecting device to a chip smaller than a grain of rice. Researchers have published an article that says they are designing sensors that are smaller, lighter, and cheaper than the LIDAR systems on the market today. It will be the future eye of the robot.
The key to this new technology is a discipline called 矽 photonics. In 矽光åå¦, engineers invented small circuits that can be observed and controlled by a microscope. Poulton and Watts compare this small circuit to a microchip that compresses an electronic system of copper wires and components and uses smaller transistors.
As a result, with a 6mm chip, the LIDAR sensor is only 0.5mm and can be manufactured on a large scale for as little as $10. These chips have some drawbacks: they can see narrower fields of view and shorter distances (currently, they can only "see" objects within two meters), but those involved in the study say these performances can be improved very quickly. Poulton and Watts wrote: "We expect to expand the field of view to 10 meters within a year. We believe that in a few years, 'LIDAR on the chip can be a business solution."
The end result may be that cheap sensors replace machine vision, while mobile processors replace machine computing. Even though the mechanized LIDAR system retains its effectiveness for long-range sensing, the transistor LIDAR chip can sense depth for a range of products. Poulton and Watts suggested that their chips be mounted on the robot's fingers so that the robot could perceive what it caught. This technology may also be used in the development of second-generation products for artificial intelligence toys, 3D smartphones and drones.
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