Design of automotive digital instrument cluster and storage architecture challenges

   
Of digital instrument cluster design challenge

-Digital instrument cluster must support high-performance real-time processing requirements (as available consumer platform), and significantly improve the design of long-term reliability. OEM manufacturer of the automobile market (original equipment manufacturer) and level, suppliers and customers will never fault will be displayed as a consumer-level telephone or PC small problems that often occur. -A new digital instrument cluster information you need to build a simple to use, exclude interference environment, thus promoting safe driving, such products must ensure superior levels of performance and long-term reliable operation, also withstand tough and poor working environments (for example, extreme temperature range of -40~+105 ° c). Automotive environment, safe and these stringent quality requirements lead to extremely long development cycles, sometimes develop a vehicle display technology requires took 3 years even longer.

Car design for the planning, design and validation process is the system in order to identify and remove operation or reliability problems. In this procedure, car designers select electronics suppliers usually adopts the TS16949 quality for demanding design methods of development product and meets the automotive electronics Council (AEC) demanding AEC-Q100 standards.

Once the vendor launched volume production systems, spare parts supplier must constantly monitor the reliability of its internal and external, taking corrective measures when necessary to ensure that the defect component parts per million (dppm) drops to zero. OEM manufacturers and tier one suppliers also want their supply base to provide long-term product support and availability once deployment of automotive embedded systems, and wanted to stop would produce high costs and sometimes impossible to revalidate in order to support life cycle is short of spare parts of a design. In some cases, revalidation costs could reach hundreds of thousands of dollars.

-Digital instrument cluster with graphical content grows, leading to more precise and complex information display system, which not only need to increase their levels of performance, and must still be able to reliably complete the basic objectives, which inform drivers of vehicles and security information. For example digital instrument clusters must be vehicle after launch to near-immediate delivery of vehicle status information, typically less one second can display on TFT screen transmission gear information important (the p, r d; 1;, 2) time. This requires the instrument cluster to jump-start, and in order to accomplish this, designers need to carefully study the performance of critical systems and components. Even a low tire pressure warning in front of the vehicle to launch such a seemingly simple information, were able to advance initiative to reduce the potential for security problems.

Instrument cluster transition from analogue system to digital system more exciting, but as noted above, this transition will enhance complexity, designers had to find innovative solutions to meet demanding system requirements, such as real-time display performance, highly reliable and long-term to slash costs, and more.

We will explore the use of reliable and extremely cost-effective way to provide the basic information.

Figure 1 is a sketch of advanced digital instrument cluster. Center of the vehicle system on chip (SOC), through its communication networks as well as internal or external memory access to input data and output to TFT display. System architecture of a digital instrument cluster with many consumer-level high-performance display platform similar.ADD350 Automotive Noise Finder
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