As the millimeter-wave radar to the processor or DSP integrated single chip, to achieve high resolution and after concatenation, it will be possible to track and classify objects, thereby achieving an edge deep learning calculation. Intelligent edge of the door opened, the future will be how much market potential millimeter-wave radar to release it?
In the rivers and lakes of the sensor, as it staged shift infighting. Some technology will inevitably perish, others are down-hearted, but some rose up. With the millimeter-wave radar technology and innovation to solve the bottleneck size and cost, and its application scenarios more diversified, expanding from two major areas of automotive and industrial to security, medical and other applications, and integration into the wider by the image sensor, etc. Practical world, the millimeter-wave radar awaiting the opening of the play.
Towards integration
Conventional millimeter wave radar system program from the RF, baseband, ADC, DSP and so on. Texas Instruments (TI) and embedded system applications ROCKETS Director of China, due to the high RF frequencies, the main process using a special RF gallium arsenide, silicon germanium, and a baseband, digital signal processing using CMOS technology, different systems part of different technologies, is typically a discrete solution, not only to develop complex, while the high cost.
And nearly two years after the process to achieve a breakthrough, single-chip solution to become "mission will be reached." Today, the market mainstream manufacturers such as TI, NXP, Infineon, ADI and other mostly using RF-CMOS technology, CMOS technology to solve the problem of high-frequency circuits used in the RF, ADC, DSP integrated into one chip so as to attain a single-chip radar system size is smaller, simpler design, while lower power consumption and cost, and more flexible monitoring and transfer line set.
Jiate Lan is also the founder of the International Microelectronics field of millimeter wave CMOS pioneer Gordon Chan Shu also said that the process of millimeter-wave radar technology from GaAs technology from 1990 to 2007, 2017 to 2007 - SiGe technology again CMOS technology since 2017, outbreaks of highly integrated CMOS process already come.
Further, AoP antenna packaging technology have begun to emerge. Jiang Hong mentioned, which can save an external antenna design complexity, both size reduction, improved heat dissipation, while reducing the overall BOM cost. With suitable are on the market some of the major manufacturers of automotive radar program had been released combines processor, RF transceiver and antenna.
It can be said, a single chip while reducing the overall difficulty of radar research and development, dramatically reducing area, power consumption and cost; on the other hand, configurability and scalability stronger, so that the distance, angle, speed, etc. can be multi-signal integration judgment, significantly increasing the accuracy and resolution of commercial processes have been able to continue to speed.
Correspondingly came the more comprehensive test, increasing competition. International companies Infineon, TI, ST, NXP, etc. have their own strengths, Xiamen Italian domestic lines and Jiate Lan although other manufacturers are cutting-edge power, but the future of the competition is not only to radar program itself, the need to provide a variety of development tools, software, evaluation boards, reference designs, and third-party services, the need to build a complete eco-system development. May be expected that the final flame "fruit" is the final cost of the chip will fall to $ 10-20 range, greatly benefit the industry.
Broaden the boundaries
Since the millimeter-wave radar to achieve a "transformation", the application also will "broaden."
In automotive applications, the millimeter wave radar Common applications include adaptive cruise ACC, the AEB, automatic emergency braking, BSD blind spot detection, the tool is regarded as the L1-L3 level autopilot.
But note that these requirements apply to different chips. ROCKETS introduction, automotive applications include close the car door alarm, chassis detection, vehicle class member detection, driver monitoring and gesture recognition, this type of application requirements detect relatively close distance, but demand for high resolution and accuracy. The ultra-short-range and short-range radar vehicle application scenarios, such as blind spot detection, lane change assist, anti-collision and other requirements vary from ten meters to one hundred meters, need for speed is relatively high. And the long-distance vehicle radar such as emergency braking, adaptive cruise control and other requirements of the detection range is generally from 150 to 200 m, radar signal processing data amount is large, it is difficult due to the limitations of memory on a single chip embodiment the radar achieved.
The millimeter-wave applications in the industrial field also varied, including liquid level detection, vibration detection, traffic monitoring, gesture recognition, UAV obstacle avoidance, and many cases are landing. ROCKETS introduction, many industrial automation requires robots, robot arms aware of their surroundings, as well as AGV (storage robots) need to find a path to avoid a collision. In addition, the field of intelligent building intelligent building applications, including running the elevator car location, speed, etc., millimeter-wave radar can show its mettle.
In addition, around the smart home, medical and other applications also opened a new imagination. Jiang Hong mentioned, in medical applications, the arithmetic processing by the millimeter wave radar can accurately detect the respiratory rate and heart rate, thereby achieving a non-contact detection. Jiang Hong also cited an example of smart home application that comes as intelligent millimeter wave radar in air conditioning appliances in popular applications, location-aware distribution of the wind direction control personnel, compared to the infrared thermal imaging distance and accuracy are stronger. In the field of security, millimeter-wave radar technology will be an important supplement, have long detection range, all-weather, penetrating other unique advantages.
This does not mean that the millimeter-wave radar to "go it alone", through integration with other sensors can obviously their respective merits. Jiang Hong noted that, as in the security field, by combining millimeter wave and the like to the image sensor, the camera can locate the target, the radar information is given distance, velocity, etc., to achieve a more secure and more stable arrangement.
Especially the need to "convergence" in the field of autopilot. ON smart YI Ji Hui, vice president of worldwide marketing and applications engineering department perception that the future needs autopilot image sensor, with millimeter-wave radar, laser radar and ultrasonic "force", carry out their duties, in order to truly achieve all-weather, higher level autopilot and security level.
Intelligent Edge
Today edge of the smart intensified, a growing number of application scenarios require millimeter wave sensor not only have the ability to perceive the environment, but also to make real-time decisions and judgments on the local side, while avoiding interference.
The millimeter-wave radar by the processor or DSP integrated, so that the accurate perception of the environment on the basis of, the data can make real-time decisions with treatment, thereby matching intelligent "beat."
The millimeter-wave radar "achievement" more than that, it becomes a cascade imaging "new driving force." Jiang Hongqiang transfer, conventional millimeter wave radar signal is speed, the distance or location, but by a set associative, its "skill" rose, improved accuracy can be realized "imaging."
Conventional millimeter wave radar angular resolution with respect to the laser radar, although the presence of disadvantages, but may be configured by cascading a number of antennas more matrix, can not only provide a higher angular resolution, but also in the horizontal and vertical directions target detection, providing a more accurate position information. Jiang Hong AWR1243 four sets TI to connect, for example, transmitting antenna 12 may constitute the receiving antenna 16, is equivalent to the antenna array MIMO antenna 192, thereby to achieve an angular resolution of 0.6 degrees.
"Basic can also be generated by cascading a second 50 000 points, significantly increasing the resolution, but not easily influenced by the environment, and even determine the general contours of the human body. With the imaging performance is getting better, applications will continue to broaden . "Jiang Hong concluded.
Some experts, without laser radar sensor configuration while the image scene is a constraint, developers want to be able to provide a millimeter wave radar obstacle ahead of the size, the height is determined to identify, based on the depth learning can be identified even obstacle properties. With the millimeter wave radar will be integrated to a single processor or DSP chip, and high resolution achieved after concatenation, it will be possible to track and classify objects, thereby achieving an edge deep learning calculation. Intelligent edge of the door opened, the future will be how much market potential millimeter-wave radar to release it?
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