Author: Liu rights, Shanghai Chen Han Electronic Technology Co., Ltd.
Since the birth of the car for more than 100 years, it has gradually evolved from people's mobility tools to the continuation of life and entertainment space. Many electronic devices are ready to come out. It is precisely in this market demand that infotainment systems and remote information control systems are increasingly used in automobiles.
In addition to the well-known GPS for positioning, wireless networks such as WIFI, Bluetooth and 3G are also widely built into the system, allowing cars and mobile phones and other terminal devices with networking functions to be connected at any time and connected to a dedicated customer service network. Even access to the Internet anytime, anywhere. Navigation is a basic function that customers can enjoy, assisting driving through GPS and intelligent network driving systems, relying on cellular networks to realize information retrieval, real-time road condition navigation and any other Internet interconnection applications; more and more new cars can already integrate global positioning System navigation technology, vehicle-to-vehicle communication technology, wireless communication and remote sensing technology realize the compatibility of manual driving and automatic driving. On the other hand, relying on advanced sensing technology, you can instantly determine the real-time situation of the road ahead of the vehicle. Combined with the latest network road data, it can not only help the owner choose the most suitable route, but also respond to emergency emergencies. The disadvantaged situation, which makes the vehicle drive safer and more punctual.
There have also been no small changes in in-car entertainment. From the initial only music and radio, to today's digital TV, digital broadcasting has become increasingly popular. Since you are online at any time, downloading songs or movies online, or listening or watching online is no different from the experience on a PC. Full-format, high-definition decoding capabilities also make the car a mobile cinema. From the perspective of user interaction interface, the application of touch screen and 3D graphics brings customers a strong animated 3D visual experience. The application of speech recognition and integrated speech technology allows the driver to control the system with ease while driving, to switch content, and to realize voice and short message communication. Due to the existence of networking, in addition to listening to Internet radio stations, watching real-time news on Internet TV, tracking real-time stock market prices has also become a basic function. Customers can also use voice commands to play media, find songs, answer phone calls, dial, return short messages, and more. Customers can also access customer call centers with one click, requesting to set navigation destinations, find service hotspots, remote applause diagnosis, emergency repair services, etc. Through the car dashboard touch screen, query and book the favorite restaurant, and lead the car to the restaurant, the more and more smart cars are giving car owners a unique driving experience.
More applications mean that the functional requirements of electronic products are more stringent. From the trend of functions and performance, it can be seen that the requirements of in-vehicle infotainment systems and portable computers and high-end handheld devices are similar. The frequency, the external bus and memory are fast enough, and the storage space is large enough. Even in portable and desktop applications, the complexity of such systems is already very high. What's more, in the automotive environment, due to the high quality requirements of customers and the stringent requirements of automotive products for electromagnetic compatibility, power consumption, real-time performance and power consumption, the design difficulty of in-vehicle infotainment systems has reached an unprecedented level.
On the other hand, the complexity of in-vehicle infotainment system design is largely due to the complexity of the software. Most of the new system functions rely on a lot of development work on embedded software. In other parts of the car (such as the engine controller), the difficulty lies in the algorithm, real-time performance, and high reliability. In addition to algorithms (speech recognition and synthesis, etc.), real-time performance (must be able to respond to customer input in real time), high reliability (no crashes, unreadable content, etc.), and high compatibility (various numbers) Music and movie formats, various web page formats, various e-book file formats, various communication protocols), high ease of operation (voice interaction, touch screen button settings, 3D graphics to be cool and simple), maintainability (online download and update Software is used to install new functions or patches).
Figure 1: Picture of driving recorder
The iMX536 is a processor that meets automotive-grade standards for the automotive industry and has many interfaces. The core processor used as an intelligent terminal for Internet of Vehicles meets the standards of the next-generation Internet of Vehicles industry. It can not only meet the requirements of the aftermarket entertainment market, such as 1080P decoding, multi-channel VGA, multi-screen vision, navigation, 3G, Bluetooth, WIFI, but also meet the real-time vehicle conditions of the front-load market, driving records, high-definition multi-camera vehicle Various indicators such as video surveillance, hard disk video recorder, Beidou GPS intelligent navigation, voice recognition, vehicle interface detection, CAN, RS485, RS232, RFID module, etc.
Figure 2: System block diagram of iMX536
Chenhan Electronics adopts iMX536 processor. After more than one year of development, it has completed the vehicle front-mounted GPS video terminal solution that meets the new national standard. At present, the product solution has entered the national standard certification system of the Ministry of Public Security. The introduction of this product has greatly enhanced the level of intelligence in the domestic smart vehicle terminal industry, creating a solid core for building a new generation of connected vehicle systems.
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