Cameras & Radar are responsible for sensing advanced driver assistance systems that support driver safety driving. Japan Electronics is further advancing the high-performance of cameras and radars.
In recent years, cars have been equipped with a variety of advanced driver assistance systems (ADAS) to ensure safe driving for drivers. Sensing devices used in advanced driver assistance systems such as Lane Keep Assist, Adaptive Cruise Control, and Autonomous Emergency Brake include millimeter-wave radar, cameras, and lidars. Based on the information collected by cameras and radars, it is possible to detect white lines on the road, obstacles, and vehicles in front. If the distance between the vehicle in front of you is smaller, the accelerator will be relaxed, and if the vehicle is closer, the brakes will be braked. These operations can be performed by the system instead of the driver. In other words, advanced driver assistance systems play the role of replacing the human eye and the human brain, and in reality, there are various changes such as driving at night, driving in rain, and driving in fog, and it is necessary to accurately detect the target under such harsh conditions.
This is a system that uses millimeter-wave radar and cameras to detect vehicles in front, pedestrians, white lines, etc., and assists drivers in driving safely
There are many types of sensing devices, but Japan Denco Elecis chose to combine millimeter-wave radar and cameras. When detecting a vehicle in front, the camera captures the vehicle in front, the radar detects the distance, and then releases the accelerator or brakes. The radar uses FMCW (Frequency Modulation Continuous Wave) to change the frequency of millimeter waves in the 77 GHz frequency domain over time, and transmits and receives signals to measure the distance and speed with the vehicle in front. Unlike ordinary radars, millimeter-wave radars have strong resistance to rain, snow, and fog, but they are easily affected by substances that cover the openings of the radar, so horn antennas are used to improve the sensitivity of sending and receiving signals. Software for detection algorithms is also installed on the radar backend, which makes it possible to strictly distinguish between multiple targets.
The fusion of cameras and radar enables accurate detection of targets even in harsh weather conditions such as nighttime, rain, snow, and fog, and provides the information required for driver assistance systems
There are many other safety systems involved in driver assistance systems, but in order to make full use of these functions, it is necessary to further improve the sensing capabilities. At the same time, it is essential to reduce the cost of sensing devices for the spread of driver assistance systems. For example, the price of radar ICs has also decreased from the initial GaAs components to SiGe devices, and in general, the price of C-MOS devices made of silicone will also drop sharply if they are mass-produced. At the same time, the resolution of cameras is increasing and the price is decreasing. Japan Electronic Elecis foresaw the evolution of this technology, and by integrating the camera and radar, it achieved cost reduction. The company is planning to further popularize driver assistance systems.
By integrating the camera and radar, the cost is reduced. In order to make it easier to introduce driver assistance systems, we will work to create an environment that will be carried out
Instructions from R&D personnel
If millimeter-wave radar components are converted to C-MOS, it will be possible to achieve a significant reduction in costs. In addition, the development of camera lenses to resin will also contribute to cost reduction. As a result of the reduction in the cost of sensing devices, for example, it is possible to sense 360 degrees around the car, and by cooperating with various functions of existing ADAS, it is possible to realize high-level automation and realize autonomous driving on its extended line. The Japan Electronics Group is making full use of its technological resources in sensors, motors, and system control to improve ADAS technology and contribute to improving the safety and comfort of automobiles with the goal of realizing autonomous driving.
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