On June 21-22, 2018, sponsored by Cuckoo Technology and Zozhi Automobile, and sponsored and supported by Alabi Smart, Analog Devices, and Socionext, the "2018 Second Smart Cockpit and Smart Driving Summit" was held in Futian, Shenzhen District Lvjing Jinjiang Hotel held. Cui Zhenghao, ADI's Greater China Automotive Electronics Market Manager, gave a keynote speech on "The Latest Developments in ADI's Smart Cockpit and Autopilot Products" at the conference.
Analog Devices Cui Zhenghao
Cui Zhenghao: Hello, everyone. I am Cui Zhenghao from the Automotive Electronics Marketing Department of ADI China. I am responsible for the automotive electronics business in Greater China, including Taiwan, Hong Kong, and the mainland. The topic of my speech today revolves around safer, smarter and more environmentally friendly cars. This is ADI's strategy in the direction of automotive electronics.
About ADI
Analog Devices, Inc. is the world's leading high-performance analog technology company dedicated to solving the most difficult engineering design challenges. With outstanding detection, measurement, power supply, connection and interpretation technologies, we build an intelligent bridge that connects the real world and the digital world, thereby helping customers re-understand the world around them.
In recent years, we have made some strategic adjustments and carried out a series of acquisitions, including system-level solutions company, chip security solutions company, and the acquisition of Linear Technology a year and a half ago. After the acquisition, ADI's analog business has been further enhanced, and the signal chain and power management have the most advanced technologies.
ADI has three important investment directions in the field of automotive electronics. Corresponding to the three important research directions in the field of automotive electronics: autonomous driving, new energy and intelligent networking, our three directions are to make cars safer, more environmentally friendly and smarter. In terms of automotive safety, we provide key sensors such as millimeter wave radar, lidar, high-performance inertial navigation, acceleration sensors, and gyroscopes. The technology of the smart cockpit will be introduced in detail later.
Audio and video codecs, algorithms, human-machine interfaces and smart sensors are our key investment directions. We mainly recommend the A2B technology bus, which has now been extended to 90% of the world's car manufacturers. It is an audio bus. The function that can be achieved is to connect all audio nodes through a bus, which is a digital bus. Traditional car audio equipment, such as car machines and many audio nodes, power amplifiers, etc. need analog lines to connect. The analog lines are heavy and the delay between them is uncontrollable. We use unshielded twisted pair cables to connect all audio equipment in series There are several great benefits to this, which will be described in detail later.
ADI's DSP in the audio processing field is currently the strongest, and mainstream audio manufacturers are using our DSP as their products. The combination of A2B and DSP provides customers with many extended functions, such as BeamformingAECNR, active echo cancellation plus noise reduction, ANC active noise reduction, RNC road noise cancellation, ICC in-vehicle communication functions, etc., which are currently in great demand. . In addition, it also provides external warnings on electric vehicles, simulating sound waves and other functions.
Smart cockpit product series
Today, I will focus on the A2B audio bus. The serial bus connected from the car and the machine is directly connected to the audio microphone array from the car and machine to realize voice recognition. It can also be used to achieve directivity, such as the independence of different sound areas in the main driving position and the co-pilot position. It can be realized by audio bus and DSP algorithm.
Audio nodes can do advanced audio algorithms through fixed delay. For example, to do echo cancellation to eliminate the music in the power amplifier, you can use the delay to take out the signal from the power amplifier and eliminate it on the car side. In the active noise reduction part, there is an active noise reduction microphone at the door position, which works with the power amplifier to do the ANC algorithm; there is also an acceleration sensor that senses road noise (supports A2B interface) to detect the vibration of the vehicle, which can be used with the audio bus to do RNC Road noise elimination. In addition to easy wiring, A2B's biggest advantages are reducing system weight and system cost and supporting advanced audio algorithms.
This is our newly launched C2B video bus. It uses unshielded twisted pair to transmit high-definition video. At present, high-definition video is transmitted through coaxial cable. Its defect is that the degree of bending is limited, and its weight is relatively high. High, the cost will be much higher, especially the cost of the connector is much higher. We made a C2B car video bus. The function is to use unshielded twisted pair to transmit high-definition video, which can reduce the cost of cable and the cost of connectors. It can also make the wiring of the whole car easy. It is very soft and can be used as a folding rearview mirror. Like, putting the camera on it is easy to achieve, and it is more helpful to reliability.
The technical characteristics of C2B, the analog bus has strong anti-interference ability, it simulates coding, not a digital bus, and the signal frequency bandwidth on the line is very low, with a frequency bandwidth of 75M. Nowadays, some digital high-definition signals have a signal bandwidth of hundreds of M or even G, so that there will be external radiation in the high frequency band, and it is more susceptible to external interference. Currently ADI ADV7xxx series have a high market share, and C2B is our recommended next-generation video bus.
ADI recommends other products in the smart cockpit field. The first is the steering wheel sensor, which can detect whether the hand is on the steering wheel, or even the left or right hand is on the steering wheel. This product can detect whether the driver really takes over the vehicle. On the other hand, the steering wheel will swing greatly when parking. If you reach into the gap of the steering wheel or put other things in the gap, there will be a safety hazard. The ADI steering wheel detection program can detect when your hand or other things are placed in the gap of the steering wheel, so as to notify the ECU to stop the steering wheel. After you take out your hand, the steering wheel will continue to work.
The driver's health detection is realized through the radar. Put the radar in the desk, chair or other position to detect the driver's heartbeat status. This technology is not particularly difficult to achieve basic functions, but it is very difficult to ensure reliability. The movement of the driver affects the speed and reliability of detection.
In terms of human-machine interface, ADI provides 2D and 3D gesture recognition. TOF has two technologies, one is infrared technology, which can realize simple recognition, that is, motion recognition; there is also a Time of flight technology, which is pure 3D technology, which can recognize more complex gestures. The latter is similar to the structured light technology in the iPhone X. It is a 3D technology that can recognize faces and recognize the status of the driver. The current popular technology is to use pure vision solutions, 2D vision solutions cooperate with infrared to detect under strong or weak light.
ToF technology has strong anti-glare ability and is a 3D technology. The recognition of face structure is better than 2D recognition. The advantage of our solution is the high-resolution VGA solution. The mainstream solution on the market now uses the QVGA solution.
Autonomous driving sensor products
The following introduces ADI's product status in the field of autonomous driving safety. ADI has set foot in this field 25 years ago, and in 1993 introduced a microchip system acceleration sensor that specifically detects car collisions. We provide a series of products that are safety-related, such as MEMS products such as airbag collision detection.
ADI has more than 15 years of history in the radar field. In the 24G radar era, nearly half of the vehicle radar modules have ADI chips. We are now making 77-79G radar products. In 2018, we acquired a German industrial radar solution company. Through this technology, we can provide you with a high-efficiency radar solution instead of a device-level solution.
Acquired Vescent Photonics in 2016, focusing on the development of flash radar and solid-state lidar solutions.
We know that there are many sensors in a car. How to make these sensors fusion achieve high efficiency is also a development trend. ADI hopes to provide high-quality sensor products and provide more accurate and effective data to the computing unit.
There are four important directions for sensors related to autonomous driving, vision, millimeter wave radar, lidar, and inertial navigation. They have their own application characteristics and weaknesses. The integration and cooperation between them is a very important point in the future. For example, vision is indispensable, relying on it to identify traffic signals, etc., and signs, which other sensors cannot do. Like the human eye, there are some aspects that it cannot do, such as strong light, low light, rain and snow.
Millimeter-wave radar has many application limitations. The current trend is to configure millimeter-wave radar, but there is still a lot of room for discussion on the actual application effect. In fact, many new cars have millimeter wave radars, but to what extent the actual application reaches and what challenges still need to be explored.
Lidar, in addition to restrictions on certain weather conditions, its current price does not reach mass production applications. And our investment in this area is to achieve real mass production applications. What we do is a pure solid-state lidar solution.
ADI's inertial navigation is currently the most powerful product in the world, because our inertial navigation is a tactical product, used in military, national defense, and security fields. Its performance is very high and far exceeds the requirements of automobiles. What we have to do is to renew Define this product and reduce its price to a car that can be used in mass production.
Does the sensor end need to be pre-processed? Put some DSP simple calculations to provide customers with more effective data. We hope to do pre-processing on the sensor side to deliver effective signals to customers, so that customers can really improve computing efficiency, especially when mass-produced models, enhance safety, improve efficiency, and reduce power consumption.
ADI's investment direction
ADI's main investment direction in the field of autonomous driving and safety is millimeter wave radar, lidar and inertial navigation products that require hardware innovation. Not only passenger cars, commercial vehicles, special vehicles, rail transit, etc. have a large number of ADI products, our goal is to provide high-performance low-cost system-level solutions.
Terminals can be divided into UK terminal, European terminal series, plug-in terminal series, transformer terminal, building wiring terminal, fence type terminal series, spring type terminal series, rail type terminal series, through the wall Type terminal series.It is able to achieve safe, reliable and effective connection, especially in the environment of high current and high voltage.
Barrier Terminal Blocks,Barrier Pcb Screw Terminal Block,Waterproof Barrier Terminal Blocks,Panel Mount Barrier Terminal Block
Sichuan Xinlian electronic science and technology Company , https://www.sztmlchs.com